Abstract: A pneumatic jigging screen device has an air chamber for generating pulsation which is connected to a compressed air source. An air outlet is provided. An air inlet valve in the form of a disk valve is connected between the compressed air source and the air chamber and includes a valve rod. An air outlet valve in the form of a disk valve is connected between the air chamber and the air outlet and includes a valve rod. A first pneumatic valve drive is coupled to the valve rod of the air inlet valve. A second pneumatic valve drive is coupled to the valve rod of the air outlet valve. A first electromagnetic control valve is connected between the first pneumatic valve drive and the compressed air source. A second electromagnetic control valve is connected between the second pneumatic valve drive and the compressed air source.

Abstract: A common automation system for various partially interacting plant parts of a commercial-size, automatic industrial plant, and in particular, of a primary industrial plant such as a coke oven. The common automation system includes automation devices which carry out individual functions and which are connected by means of data lines to a master control unit and via the latter to one another. The automation devices are connected to one another via local data transmission units to exchange data directly, thereby defining automation groups individually capable of operating autonomously, according to the technological structure of the plant. The automation devices independently process the values from the plant and adjust, control, and regulate the plant components assigned to an automation group, distributed according to their programming based on the plant data supplied to them.

Abstract: A telemetry system for obtaining loggings by an independently guiding logging probe provided with a sensor includes the logging probe ejected in a drill string, so that the sensor projecting through a drill bit of the drill string has an access to the bottom and walls of the drill bore, a pick-up probe injectable into the drill string to form a wireless connection with the logging probe and connected to a portable computer which initializes the logging probe, loggings stored in the logging probe are readable from the portable computer upon recovering the logging probe from the bore string.

Abstract: Coke feed device with housing (6) for a coke dry cooling installation which is allocated to a cooling shaft (41) and consists of a stationary hopper (1) with an extraction line (9), a movable hopper (2), a movable, liftable and lowerable cooling shaft closure (8) and the housing (6) containing the movable hopper (2) and the cooling shaft closure (8) which are arranged on a joint chassis (22) running on rails (49). The movable hopper (2, 200, 201) is fitted with a distribution bell (3, 4) and a liftable and lowerable sealing ring (11) and the movable cooling shaft closure (8) fitted with a sealing ring (55) is integrated into a lifting and lowering device (15) and the housing (6, 600, 601) takes the form of a hood clear of the floor or with apertures in the walls (45, 450, 451, 46, 460, 461) for a limited secondary air supply.

Abstract: A door is equipped on its side facing the area to be closed off, with a sealing element disposed around the peripheral edges of the door, a door locking device to retain the door in a closed position, and possibly a thermal layer for insulating the door from passage of heat therethrough.

Abstract: Provided in a portable lamp is a cathode-heatable fluorescent bulb which is supplied from a rechargeable battery. For the purpose of charging, the lamp is coupled with a charging device situated in a region which is not at risk. The charging device is provided with separate connections for the charging voltage and for the application of a heating and starting voltage. At the beginning of the recharging phase, the battery current supply circuit for the bulb is interrupted. When removing the lamp the battery current supply circuit is closed, a heating voltage made available from the charging device and applied to the cathode of the bulb. Thereafter, the starting voltage is developed in a starting device and applied to the bulb electrodes. Only after striking of the bulb is the lamp electrically decoupled from the charging device. Starting with preheating is thus effected by means of the charging device. The lamp includes an incandescent bulb with a separate reflector.

Abstract: The cutting horizon for mining machines, such as coal ploughs and roll loaders, in particular the position of the coal-rock interlayer, can be determined with the aid of light signals of selected wavelengths at reflection layers, at least one sensor head guiding iding dragging along the floor and having at least one optical waveguide bundle constructed as measured-value pickup and guided in a passage sealed with a crystal window being arranged on the mining machine and a transmitted and receving station being arranged on the machine body. For clear identification of the carbon-rock interlayer the passage (6) receiving the optical waveguide bundles (5,5') extends in the exit of the sensor head (3) at an angle of 30.degree. and the lower surface (13) of the crystal window (7) extends parallel to the floor (2).

Abstract: This invention is directed to an extremely lightweight construction for coke oven doors with simultaneous optimal sealing, by assuring that the oven door comprises of one sealing unit and the closing forces act simultaneously on the seal, thereby avoiding heat loss between the two units as much as possible.

Abstract: Procedure for hydrogenation of coal by means of liquid phase and fixed-bed catalyst hydrogenation whereby the head products of the high-temperature separator are led directly, and together with the entire high-pressure circuit gas, over a reactor with a rigidly installed catalyst; are separated from the exhaust products of this reactor by partial condensation of the cycle oil required for producing the coal paste and withdrawn from an intermediate separator; and are led again, together with the entire high-pressure circuit gas, over an additional reactor with a fixed-bed catalyst.

Abstract: This invention is directed to an extremely lightweight construction for coke oven doors with simultaneous optimal sealing, by assuring that the oven door comprises one sealing unit and the closing forces act simultaneously on the seal, thereby avoiding heat loss between the two units as much as possible.

Abstract: A practically isothermal temperature distribution of the reactor contents is obtained, especially for high temperature and pressurized hydrogenation reactors operating in the sump-phase by a hydrogenation gas passing over the outer region of the reaction chamber, so that the hydrogenation gas cools the reaction in the chamber. Additionally, the reaction heat which is extracted by the hydrogenation gas is used to heat the reaction components at a stage in the hydrogenation process. The major portion of the reaction heat is used to heat charges, preferably for the reactors, which charges contain no appreciable amounts of solid material. These charges, preferably comprising hydrogenation gas, preferably pass through a jacket space between the reaction chambers and the external portion of the reactors, which external portions preferably make contact with the atmosphere.

Abstract: This invention is directed to an extremely lightweight construction for coke oven doors made to provide optimal sealing; the oven door comprises one sealing unit having a seal, and closing forces are applied to act uniformally on the seal, thereby minimizing heat loss between the sealing unit and the coke oven as much as possible. The oven door, on its outside surface, is also provided with a boxed duct structure which in use is vertical and has an open top; the boxed structure facilitates heat dissipation by the door outside surface, by convection air flow in the boxed structure.

Abstract: A cyclone arrangement for cleaning gas from a gas generator for gasifying coal which is exhausted at high pressures. The invention proposes that the cyclone arrangement for the cleaning of crude gas includes at least two cyclones connected in parallel on their input sides, which cyclones can be turned on and off individually. Thereby a dry cleaning of the crude gas can be performed with only a slight temperature loss. The quantity of gas corresponding to the optimum cleaning efficiency can be adjusted to the quantity of gas either discharged from the gas generator or actually required for the pressurization of the steam generator by adjusting the number of cyclones put into operation, without the need for the inclusion of buffer capacities. The gas generator comprises a pressurized fixed bed reactor.

Abstract: The invention provides an improvement to a process for producing a diesel fuel from a medium heavy oil obtained from coal. The invention increases the amount of medium oil which can be used to produce diesel fuel while keeping the total yield of oil from the coal about the same. Thus, the fraction of the medium oil recovered is greater without altering the total yield of oil from the coal, and now amounts to about 80 to 85 percent of the total oil yield. Accordingly, the amount of light oil derived in this process becomes correspondingly smaller. Thus, the total oil yield is increased by about 4 to 6 percent compared with previously obtained results.

Abstract: A coal gasifier has a fluidized bed reactor. The gasifier has a series of cyclones connected to an outlet of the gasifier to clean the gas generated by the fluidized bed reactor to isolate particulate matter. The cyclones are turned on and off individually to compensate for the variations in the gas output of the fluidized bed reactor.

Abstract: Process for sump-phase hydrogenation with integrated gas-phase hydrogenation relevant parameters being adjusted so that an economical heat recovery for the entire system is achieved, despite increasing incrustation of the mash heat exchanger and the increasing deactivation of the gas-phase catalyst. The process-relevant temperatures of the intermediate precipitator and of the gas-phase reactor are precisely adjusted by the use of head coolers which follow the sump-phase hydrogenator, and by head coolers which precede the intermediate precipitator. The procedure is such that the waste heat from the sump-phase products is partially recovered by using it to heat the raw materials constituting the gas phase and by feeding it back again to the mash heater.

Abstract: In accordance with the invention, during hydrogenation by means of sump phase hydrogenation followed by gas-phase hydrogenation, the high boiling fractions are separated from the lower boiling vapor fractions, after leaving the hot precipitation head, by partial condensation in an intermediate precipitator with the result that the gas-phase reactor has a better service life and optimum reaction conditions can be provided. The improved process results in an improved quality of solvent for the sump phase hydrogenation.

Abstract: The invention provides a process for the utilization of waste water in a coal hydrogenation plant. The demand for processed water and the amount of water required in the hydrogenation of coal is reduced by the use of the resulting waste water from an atmospheric distiller and/or a vacuum distiller as quenching water in a cold precipitator stage of the coal hydrogenation process.

Abstract: With sampling valves for gas streams or liquids, especially in coal gasification plants and with the sampling valve located close to the reactor, the functional reliability of the valve and the identity of the samples with the crude gas stream are ensured by heating and/or flushing the sampling valve. The valve has several embodiments which include features which can be used in various combinations, for example, the valve stem can include a heater, a passage for the introduction of a flushing and/or heating medium into the valve chamber. The valve housing can include a second chamber therein through which a heating medium can be circulated or by which pressure differentials on the valve chamber can be minimized.

Abstract: In a coal-gasification reactor installation, carbon dioxide gas is added into a liquid coal suspension in the form of fine bubbles of gas to improve the flowability and dispersion of the liquid coal suspension. In a preferred embodiment, carbon dioxide is separated from the gaseous reactor products, dissolved in an ammonium solution, reacted to form solid ammonium carbonate salt; the solid chemical salt is added to the liquid coal suspension where it is made to decompose and generate carbon dioxide gas.