Abstract: The invention disclosed and claimed herein relates to a subterranean pipe tractor for moving and controlling a pipe scarifier. The subterranean pipe tractor comprises a scarifier connector that reversibly connects a scarifier to the pipe tractor; a drive mechanism for propelling the scarifier through the pipe when the scarifier is connected to the pipe tractor; and a power source that powers the drive mechanism. The power source of the pipe tractor may be an on-board power source or an external power source. The pipe tractor may include a hydraulic pump and an on-board electric generator powered by the power source. The subterranean pipe tractor may include local controls for controlling local functions and remote controls used to control remote components, such as a high-pressure fluid source. The subterranean pipe tractor may optionally include a scarifier lift mechanism for lifting one end of the scarifier.

Abstract: Methods, systems, drain vaults, and tools are employed to treat storm water runoff from a watershed. The methods and system may include multiple drain vaults that function to receive and allow quiescence of the water so that laminate flow may be achieved between adjacent vaults. The drain vaults may be made of stacked together vault sections held in compression, and screens and arrays of tube elements are with different drain vaults. There may be combined systems where in an upstream system flow is uncontrolled during a rainstorm and some of the rainfall water is diverted to a retention structure and then in a control flow rate is transferred to a downstream treatment system that may use tube elements. A tool is used to clean the tube elements.

Abstract: Apparatus to clean silicon electrode assembly surfaces which controls or eliminates possible chemical attack of electrode assembly bonding materials, and eliminates direct handling contact with the parts to be cleaned during acid treatment, spray rinse, blow dry, bake and bagging. Aspects of the apparatus include a kit including an electrode carrier to hold an electrode assembly, a treatment stand to allow access to the electrode assembly, a spider plate to clamp the electrode assembly in the electrode carrier, a nitrogen purge plate to supply nitrogen gas to the backside of the electrode assembly during acid cleaning of the electrode, a water rinse plate to supply water to the electrode face, a blow dry plate to supply nitrogen to dry the electrode assembly and a bake stand to support the electrode assembly during a bake before placing the clean electrode assembly in a bag.

Abstract: A method removes combustion residues from a wall of a chamber which carries combustion gases and/or from at least one component which is disposed in the chamber. The method includes making contact between the combustion residues and a first cleaning medium, and making contact between the pretreated combustion residues and a second cleaning medium. The first cleaning medium and the second cleaning medium differ at least with regard to a physical state. An apparatus for removing the combustion residues has different cleaning appliances and operating areas which at least partially overlap. The method and the apparatus allow, for example, heat exchanging surfaces in steam generators to be cleaned in a particular careful and thorough manner.

Abstract: An aqueous tube cleaning apparatus and method includes a cleaning receptacle and a vertical receptacle, which is taller than the cleaning receptacle. A tube, or bundle of tubes, is placed in the cleaning receptacle, extending through an inlet port from the vertical receptacle, and a gate is closed to clamp the tubes in place. The vertical receptacle is then filled with a fluid, and the pressure created by gravity forces the fluid through and around the tubes, cleansing the inner and outer surfaces of the tubes.

Abstract: A method of cleaning sediment from a liquid-transporting pipeline comprises injecting gas into the pipeline. The injected gas forms a bubble in the pipeline and the bubble travels in a direction towards a discharge of the pipeline. Resulting turbulence at a trailing surface of the bubble causes sediment in the pipeline to become entrained in a liquid phase trailing the bubble. The bubble and sediment entrained in a liquid phase trailing the bubble are conveyed to the discharge of the pipeline.

Abstract: A solid product removal method for removing a solid product adhering to a gas exhaust pipe member having a rinsing water inlet pipe member with a tip opening located inside the gas exhaust pipe member for feeding rinsing water into the inside of the gas exhaust pipe member from the tip opening thereof; hence a solid product formed newly upon reaction with the rinsing water and adhering thereto can be rinsed off with the rinsing water introduced from another tip opening located at a different position; and therefore, an adherence of the solid product can be prevented from heating the inner face of the gas exhaust pipe member. A scraping member for scraping the solid product stuck to the inner face of the gas exhaust pipe member may be used.

Abstract: According to one embodiment of the present invention, a method of cleaning one or more fluid plenums of an electrode assembly is provided. According to the method, a plurality of fluid ports in communication with the fluid plenum are isolated and differentiated into respective sets of plenum input ports and plenum output ports. The input and output ports are engaged with respective cleaning fluid couplings. A cleaning fluid is directed through the fluid plenum by creating a fluid pressure differential ?P=PIN?POUT across the plenum input and output ports. The pressure differential ?P is large enough to force cleaning fluid from the cleaning fluid supply duct to the cleaning fluid waste duct through the fluid plenum. Additional embodiments are disclosed and claimed.

Abstract: This invention relates to a declogging device (9) and declogging method used to declog and clean the precipitation of metal dusts, compressor oil and the foreign matters in the refrigeration cycle (1) in a refrigerator.

Abstract: Method and device for measuring and controlling the circulation of fluids in endoscope channels. Device includes hermetic chamber having a known volume and a low level and high level sensor to control filling and emptying. The chamber is connected to a filtered air compressor, an injection pump to inject a drying product and a circulation pump to circulate cleaning and disinfecting solutions contained in the tank. The tank can receive at least one endoscope and includes injectors connected by a solenoid valve to the hermetic chamber. The device is used to verify and record the flow of cleaning, disinfecting, rinsing and drying solutions passing through each of the endoscope channels during the cleaning and disinfecting operations.

Abstract: The present invention relates to a method for dispensing of a microbiologically sensitive fluid, in particular low acid food fluid, in a hygienic manner so as to avoid micro-organism growth in the line dispensing the fluid as well as in any mechanical components of a dispensing unit that may enter into contact with the fluid. The invention hygienically supplies microbiologically sensitive fluid from a removable container that has a terminal connecting portion to a dispensing unit. The unit includes a coupling mechanism adapted to connect the terminal connecting portion and a component for delivering a cleaning or rinsing fluid within the terminal connecting portion. Thus, during cleaning or rinsing, the cleaning or rinsing fluid can be discharged within the terminal connecting portion up to a closing point of the container assembly, thus demarcating a closing point, downstream of which is a part that is maintained clean, and upstream of which is a part of the container that is maintained sterile.

Abstract: A cleaning apparatus useful for cleaning the interior of a pipeline contains: (A) a platform of a dimension sufficient to be inserted through an opening in the pipeline, the platform containing one or more portions; (B) a fluid interrupter having one or more parts to provide a surface to contact fluid flow and thereby interrupt fluid flow, the fluid interrupter constructed and arranged to be attached to the platform; a downstream side of the fluid interrupter being supported by members connected to the platform to dispose the fluid interrupter against fluid flow; (C) runners attached to the underside of the platform to contact an inner diameter of the pipeline; whereby the supported fluid interrupter, platform and runners redirect fluid flow between an underside of the platform and an inner surface of the pipeline; and (D) a device located downstream of the fluid interrupter to constrict the volume of the redirected fluid and increase its flow rate; whereby fluid flow is increased to move solid waste in the p

Abstract: To improve cleansing quality of wall surfaces of micro-flow channels in a micro-flow channel cleansing method. During cleansing of wall surfaces of micro-flow channels having at least one branching channel, by causing cleansing fluid to flow therethrough, the cleansing fluid is caused to flow through the at least one branching channel such that there is no residual fluid on the wall surfaces thereof.

Abstract: The invention relates to a method of cleaning a pipe (12) by action of a fluid under very high pressure. It is characterised in that the fluid under very high pressure is caused to pass in a flexible tube (14); said tube is subjected to the action of motorisation means (5) for longitudinal advance, and means for driving the tube (14) in rotation around its longitudinal axis; these motorisation means (50) are regulated by management means (48) and rotation detection means (47) and/or pinpointing longitudinal advance, and these means of driving in rotation; the tube (14) is guided near the entrance of the pipe (12). The invention also relates to a device for implementing this method.

Abstract: A cleaning device (1) for hose filters comprising a cleaning head (5) having at least one nozzle (11) rotating about a longitudinal axis (L), is characterised in that the cleaning head (5) comprises a fixed jacket (15) having a smooth outer surface which surrounds the at least one rotating nozzle (11) at a distance and in which a series of through holes (17) are formed, said holes being distributed over the circumference of the jacket (15) and being arranged with respect to each nozzle (11) such that a jet emerging from each nozzle (11) during operation can pass through a through hole (17) at least intermittently.

Abstract: Apparatus and methods are disclosed for cleaning interiors of passageways in endoscopes or other luminal medical devices by flow of liquid and gas therethrough. The liquid flow may include rivulets, droplets or other liquid entities which move on the internal surfaces of the passageways, and may include a three-phase contact interface between liquid and dry solid and gas.

Abstract: A method, composition and apparatus for cleaning an internal surface of a narrow diameter channel.

Abstract: The invention concerns a method of washing pipework comprising a high point (118) and at least one low point (112a, 112b, 112c, 112d) and filled with a liquid product (104), the washing method comprising: a step of draining the pipework of the liquid product (104); a step of filling the pipework with a washing product up to a filling level (120) below the level of the high point (118); a step of introducing into the pipework a total volume of air through the or each low point (b 12a, 112b, 112c, 112d) the total volume of air introduced being substantially equal to the volume existing between the level of the high point (118) and the filling level (120); and a step of draining the pipework of the washing product; the method being characterised in that the introduction step comprises at least two cycles, each cycle comprising in series an introduction of a volume of air of a first type at a first rate and an introduction of a volume of air of a second type at a second rate lower than the first rate, and in

Abstract: A system and method whereby on-line cleaning of black oil heater tubes and delayed coker heater tubes may be effectuated by injecting a high pressure water charge through the tubes during normal process operations so as to prevent tube fouling and heater downtime. The high pressure water charge begins the on-line cleaning process once it enters the heater tube by undergoing intense boiling and evaporation. The cleaning occurs by two methods—a scrubbing action and a shocking action. The scrubbing action occurs because of the complete turbulence caused by the water charge's intense boiling within the heater tubes. The shocking action is caused by the expansion and contraction of the heater tubes resulting from the colder water charge flowing through the heater tubes which is then followed by the hotter process fluid flowing through the heater tubes.

Abstract: A gutter member includes an inlet operatively coupled to a gutter trough. The inlet is configured to receive matter such as water and non-water matter from the gutter trough. The gutter member further includes an outlet operatively coupled to a top of a downspout. The outlet is configured to pass water to the downspout. The gutter member further includes a reservoir configured to collect non-water matter. The reservoir is located between the inlet and the outlet and is lower than the gutter trough relative to the earth. The reservoir includes an exit port door configured to move between a first position in which a substantial amount of the non-water matter is retained in the reservoir and a second position in which the non-water matter is released from the reservoir.

Abstract: A device for collecting a sample and for depositing the sample in a sample-receiving port of a measuring apparatus comprises a first connection element (8) with three connections for fluid, and a second connection element (7), and a hollow needle (5) for collecting and depositing the sample. A first feed line (9) for a first washing liquid is connected via a first pump to a first connection for fluid of the first connection element (8). A second feed line (10) for a second washing liquid is connected via a second pump to a second connection for fluid of the first connection element (8). A connection for fluid of the second connection element (7) is connected to the third connection for fluid of the first connection element (8), and the second connection element (7) is connected to a dosing device (1) and to the hollow needle (5). A valve (2) is arranged between the third connection for fluid of the first connection element (8) and the second connection element (7).

Abstract: A method and apparatus for substantially cleaning fill from a borehole is described variously including running a coiled tubing assembly into the wellbore, creating a fluid vortex by circulating cleaning fluid through the coiled tubing, and pulling the coiled tubing and coiled tubing assembly out of the hole at a speed sufficient to substantially clean the particulate solids from the wellbore. An apparatus for substantially cleaning fill from a hole, including vertical, horizontal, or deviated wells also is provided.

Abstract: Method of removing the contents from a pipe (1)comprising forcing a gas flow through the pipe, the pipe having a pipe volume, an inlet end and an outlet end (9), characterized in that the gas flow is forced into the pipe (1) at the inlet end by applying a gas pressure decreasing from an initial pressure to a lower final pressure to remove at least parts of the contents from the pipe and maintaining that lower final pressure to remove the remaining contents from the pipe and apparatus for removing the contents from a pipe by forcing a gas flow through a pipe (1) having an inlet end and an outlet end (9), comprising gas flow generating means (5) and a container (3) having an inlet and having an outlet connectable to the inlet end of the pipe (1).

Abstract: One embodiment of the present invention relates to a trocar cleaning system including an elongated member and an irrigation device, a suction device, or a suction/irrigation device. The elongated member is designed to be inserted within a trocar. The elongated member includes a pliable wiper type member at the distal end to facilitate a radial plowing of debris within the trocar as the elongated member is inserted and removed. The elongated member also includes an internal channel coupled to a radial opening on the distal end and coupled to either an irrigation device or a suction device on the proximal end. The irrigation device may pressurize liquid through the internal channel and out a radial opening on the distal end of the elongated member so as wash the inside of the trocar. Likewise, the suction device may utilize the internal channel to create a suction force at the distal end of the elongated member.

Abstract: To optimize the results of rounding and therefore to optimize the high pressure resistance of the component, it is firstly proposed that prior to the machining step of hydro-erosive rounding, the edge (5) and the surfaces (4, 6) of the high pressure-resistant component (1) which adjoin the edge (5) are each placed under compressive stresses in the region of their surface by means of a grinding and/or honing process. Also with regard to the method, and with regard to an apparatus for the hydro-erosive rounding, it is proposed that a closure element (9) is inserted into the continuing first bore (2), downstream of the second bore (3), which branches off from the first bore, as seen in the main direction of flow (S) of the liquid (8) mixed with abrasives (7), in order to divert the liquid (8) mixed with abrasives (7) from the first bore (2) into the second bore (3).

Abstract: The invention provides probe washing cups and methods. A probe washing cup has a washing well and a waste cup. A drying section is disposed between an open end of the probe washing cup and an inlet plane of the washing well. The drying section has a channel that is aligned with the washing well. The channel has an opening for receiving the probe therethrough.

Abstract: One embodiment of a jetted fluid system cleaning device may comprise an inlet port, an outlet port, at least one tube, and a sanitation system. The inlet port is adapted to receive a fluid and may be adapted to couple to a jetted bathtub faucet. The at least one tube may be coupled to the inlet port and adapted to transport the fluid from the inlet port to the fluid outlet port whereupon the fluid outlet port may be adapted to release the mixture to a jetted system intake port. The sanitation system in one embodiment may be operatively coupled to the at least one tube and adapted to insert a cleaning solution to the fluid to create a solution-fluid mixture.

Abstract: A method for cleaning a work string which may have been used to inject drilling muds, cement slurries, cement displacement materials and the like into a well where the work strong may contain drilling mud residues, cement slurry residues, cement slurry displacement materials, pipe thread lubricants, pipe dope and the like, as well as corrosion on the inside of the work string by injecting a dispersion slug into and recovering the dispersion slug from the work string.

Abstract: The invention relates to methods and compositions for removing metal oxide soils from surfaces. The compositions include an anionic surfactant and a pH adjuster at an acidic pH. In one embodiment, the invention relates to a method of removing a metal oxide soil from a surface by (1) applying a use composition to the surface, the use composition having a pH adjuster in an amount sufficient to provide a use pH at or below 7, an anionic surfactant in an amount to remove a portion of the metal oxide soil, and a carrier, (2) removing the metal oxide soil from the surface with the use composition, and (3) rinsing the surface to remove the use composition and the metal oxide soil.

Abstract: Method for removal of fouling (14) and/or plugging (13) out of a bundle (11) of channels (12) by treatment with a liquid (2), in particular out of firmly interconnected channels (12), oriented in parallel to each other, as a catalyst module, which can be carried out very quickly and cost effectively, by filling the channels (12) repeatedly and alternately with the liquid (2) from their ends, and draining at least part of the filled in liquid off the same ends.

Abstract: An apparatus and method for cleaning passageways and the like with a two-phase mixture of gas under pressure and an aqueous cleaning solution. The two-phase cleaning mixture is generated in a module and is passed out of the module at a predetermined rate that determines droplet size, velocity and droplet density at the pipeline surface to be cleaned. The droplets impact the walls of the passageway to be cleaned, thereby fragmenting, eroding and removing contaminants in said passageway. These are then flushed out of the passageway by the two-phase flow. The flow of cleaning solution can be steady or pulsed. The apparatus and process include a clean-in-place system that is useful in food, beverage, pharmaceutical and similar process industries.

Abstract: The disclosed apparatus includes a supply line (22) between a source of liquid paint (64) and an applicator (62) having at least two pigs (20A and 20B) and a source of liquid solvent (60) which delivers solvent (60) between the two pigs (20A and 20B) and the pigs (20A and 20B) are driven by paint (80) from adjacent the paint source (64) to the applicator (62). The apparatus further includes a second source of liquid solvent (60) which delivers solvent (60) between the pigs (20A and 20B) adjacent the applicator (62) and the pigs (20A and 20B) are returned through the supply line (22), thereby flushing the supply line (22). In the disclosed embodiment, the source of liquid paint (64) is a piston dosing device (70) which receives paint (80) from a color changer or the like and delivers a predetermined volume of paint (80) to the applicator (62). The delivery line (22) preferably includes a friction resistant inner layer, an intermediate dielectric layer and a protective outer layer.

Abstract: The present invention concerns an improved apparatus for cleaning the interior of a liquid handling probe to reduce the amount time and the volume of wash fluid required to clean the probe and minimize carryover of material between different samples. In addition to the probe, the apparatus includes one or more wash fluid reservoirs, a compressed gas supply, one or more pumps, two or more valve-controlled probe lines and a controller for opening and closing the valves and actuating the pump(s) at desired time intervals. The invention further concerns a method of cleaning a liquid handling probe using the claimed apparatus and comprising sequential steps of pumping wash fluid and compressed gas through the probe.

Abstract: Paint-metering cylinder for supplying a paint discharge nozzle with a paint material for painting plants, painting plants, and method for rinsing paint-metering cylinder. The paint-metering cylinder includes at least one rinsing device having at least two rinsing agent outlet openings.

Abstract: A paint gun is washed by adjusting the spray pressure of washing solution, the pressure of atomizing air, and the pressure of the patterning air so that the washing solution sprayed from the paint nozzle is shaped so as to wash the front surface of the paint nozzle.

Abstract: A pipeline pig—that moves by pressurized gas flow and provides for distribution of treating liquid subsisting in a lower portion of a pipeline—having a longitudinally extending nozzle located at a forward end of the pig, an array of helical-shaped louvers located on the discharge side of the nozzle and arranged circumferentially, and two perforated sealing elements that create a cavity that serves as a low pressure plenum. The louvers create a vortex effect and the perforated sealing elements allow vapor and liquid in front of the pig to be drawn into the cavity and discharged through the ports and back into the discharge of the nozzle. In this manner, liquid subsisting at a bottom portion of the pipeline is dispersed to achieve a complete 360° coating application of the interior cylindrical wall of the pipeline.

Abstract: A safety cage is used in waterblasting with a lance comprising a hollow rod and a nozzle having a diameter larger than the diameter of the rod. The safety cage is an enclosure having an open bottom and a transparent top. The top has a slot and a means for allowing movement through the slot of the rod but not the nozzle of the lance.

Abstract: A cleaning module for machines for the production of liquid foods, particularly for coffee makers, including at least one reservoir for cleaning agents to accept cleaning agents, with at least one dosing device having a control connector and at least one discharge chamber, with the dosing device being connected to the cleaning reservoir and the discharge chamber such that cleaning agents can be fed by the dosing device from the reservoir for cleaning agents to the discharge chamber. The invention further relates to a device for the production of liquid foods and a method for its cleaning.

Abstract: A substrate processing apparatus cleaning method that includes: containing a cleaning gas in a reaction tube without generating a gas flow of the cleaning gas in the reaction tube by supplying the cleaning gas into the reaction tube and by completely stopping exhaustion of the cleaning gas from the reaction tube or by exhausting the cleaning gas at an exhausting rate which substantially does not affect uniform diffusion of the cleaning gas in the reaction tube from at a point of time of a period from a predetermined point of time before the cleaning gas is supplied into the reaction tube to a point of time when several seconds are elapsed after starting of supply of the cleaning gas into the reaction tube; and thereafter exhausting the cleaning gas from the reaction tube.

Abstract: The present invention relates to apparatus and methods of removing media. In particular, the present invention relates to apparatus and methods of removing media from a tooling for a fuselage. In one implementation, the media removal apparatus uses an auger to dislodge the media, and a vacuum to remove the media. In another implementation the media removal apparatus uses an air pressure line to dislodge the media and a vacuum to remove the media.

Abstract: An aqueous tube cleaning apparatus and method includes a cleaning receptacle and a vertical receptacle, which is taller than the cleaning receptacle. A tube, or bundle of tubes, is placed in the cleaning receptacle, extending through an inlet port from the vertical receptacle, and a gate is closed to clamp the tubes in place. The vertical receptacle is then filled with a fluid, and the pressure created by gravity forces the fluid through and around the tubes, cleansing the inner and outer surfaces of the tubes.

Abstract: In a first phase, after completion of a production process for plastic films, the blowing head is heated by the heater that is present to a temperature above the melting temperature of the plastic remaining in the blowing head to liquefy the same. In a second phase, at the latest after the liquefied plastic has run out, at least the region of the blowing head that is in contact with the plastic is sealed off from the ambient atmosphere and purged of its oxygen-containing atmosphere. The head is then heated far above the decomposition temperature of the plastic still remaining, and the gaseous products thereby occurring are discharged. At the end of the decomposition phase of the remaining plastic, the blowing head is flushed through with a gas which contains at least a proportion of oxygen, in order to carry out an incineration of residual particles.

Abstract: A plasma treatment apparatus has a reaction vessel (11) provided with a top electrode (13) and a bottom electrode (14), and the first electrode is supplied with a VHF band high frequency power from a VHF band high frequency power source (32), while the bottom electrode on which a substrate (12) is loaded and is moved by a vertical movement mechanism. The plasma treatment system has a controller (36) which, at the time of a cleaning process after forming a film on the substrate (12), controls a vertical movement mechanism to move the bottom electrode to narrow the gap between the top electrode and bottom electrode and form a narrow space and starts cleaning by a predetermined high density plasma in that narrow space. In the cleaning process, step cleaning is performed. Due to this, the efficiency of utilization of the cleaning gas is increased, the amount of exhaust gas is cut, and the cleaning speed is raised. Further, the amount of the process gas used is cut and the process cost is reduced.

Abstract: A cleaning method for a combustor comprises positioning a spray portion of a nozzle through an igniter plug boss and spraying an acid solution inside the combustion chamber. The acid solution impinges the inner liner and the outer liner, dissolving contaminant deposits inside the effusion holes. The nozzle can have a second spray portion outside the combustion chamber to provide acid solution to the radially outward surface of the outer liner. After cleaning, distilled water is sprayed through the nozzle to remove the acid solution residue from the combustor. The used acid solution and distilled water can be collected, filtered and pumped through the nozzle to provide a recirculating cleaning/rinsing system.

Abstract: The present invention is improved cleaning composition having at least one ketone, water, and a nonionic surfactant and a method of using the composition for cleaning organic residue.

Abstract: A method and system for passivating a processing chamber is provided, whereby the processing chamber is exposed to one or more cycles of citric acid, or nitric acid. The processing chamber is fabricated, for example, from stainless steel. Each cycle may be performed at a pressure greater than atmospheric pressure, or a temperature greater than 20 degrees centigrade, or both.

Abstract: A method for carrying out a cleaning process in coating systems. Such a coating system comprises a horizontally, rotationally mounted drum container for receiving the product which is to be coated and polygonal and perforated lateral areas which are sealingly covered, respectively, by an air duct. The invention also relates to a device for carrying out the method. The invention is characterised in that a cleaning lance, which can be displaced axially, automatically passes through the air duct arranged on the outer wall of the drum container for cleaning and/or drying, and it cleans and/or dries the inner wall of the air duct.

Abstract: According to one embodiment of the present invention, a method of cleaning one or more fluid plenums of an electrode assembly is provided. According to the method, a plurality of fluid ports in communication with the fluid plenum are isolated and differentiated into respective sets of plenum input ports and plenum output ports. The input and output ports are engaged with respective cleaning fluid couplings. A cleaning fluid is directed through the fluid plenum by creating a fluid pressure differential ?P=PIN?POUT across the plenum input and output ports. The pressure differential ?P is large enough to force cleaning fluid from the cleaning fluid supply duct to the cleaning fluid waste duct through the fluid plenum. Additional embodiments are disclosed and claimed.

Abstract: A coke removal system removes coke deposits from the walls of a high temperature passage in which hydrocarbon fuel is present. The system includes a carbon-steam gasification catalyst and a water source. The carbon-steam gasification catalyst is applied to the walls of the high temperature passage. The water reacts with the coke deposits on the walls of the high temperature passage to remove the coke deposits from the walls of the high temperature passage by carbon-steam gasification in the presence of the carbon-steam gasification catalyst.

Abstract: A method and a device for washing a drain pipe allowing a nozzle to be rotated along the inner peripheral surface of a pipe even in a lateral pipe, wherein the positions of a plurality of injection holes (10, 11, 12, and 13) formed in the nozzle (1) are formed and the amount of high pressure water jetted from each of the injection holes (10, 11, 12, and 13) are regulated so that the specific injection hole (10) only among the plurality of injection holes is set so as to be opposed always to the inner peripheral surface (5a) of the pipe.