Abstract: A process is disclosed for regulating the gas pressure in the retort of a coke oven. Pivotable cup valves arranged in the elbows of the ascending pipe are actuated as throttling members according to the pressure curve resulting from gas formation from the coal to be cokefied. Throttling of each individual retort is effected by varying water supply, thus regulating the extent of submersion in water, and regulation follows actual pressure conditions in the retort of the coke oven.

Abstract: A method is described, using a polyurethane resin mixture, for sealing off points through which water enters geological rock formations. The method utilizes an isocyanate component (a) and a polyol component (b), to be intimately mixed in a static mixer. The mixture is introduced under pressure into the rock formation through boreholes or injection lances. Primary or secondary di or polyamines are substituted for a portion of the polyol component (b) in quantities such that the polyol remains in excess. These amines greatly accelerate the gelation time for the resin, resulting in an instantaneous increase in viscosity of the gel.

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: A survey process for cable core borings in which an inner core tube (3) with an autarcally operating measuring probe (24) releasably secured via a core retaining sleeve adapter (20) is fed into a core boring rod (6) and blocked in an outer core tube (4) with a boring ring (2) via a core tube coupling (10, 11, 12, 13), measurements are taken in the open borehole by the measuring probe (24), the sensors of which look forwards through the boring ring on the withdrawal of the core boring rods (6), and temporarily stored time-dependently in the measuring probe (24), the measured depth is found by means of a rod travel indicator (1) and stored in a manner correlatable in time and, after the withdrawal of the inner core tube (3) with its measuring probe (24) secured to it, the measurements are read out from the measuring probe via a portable PC.

Abstract: The invention concerns a device for the sequential firing of electrical detonators in several firing circuits, the device consisting of a detonating machine, electric leads and switches for activating the firing circuits. The detonating machine (1) is connected by a lead (2) to an electronic firing switch (3) to which are connected the firing circuits (13a . . . 13n) which consist of one or more series-connected electrical detonators (14a . . . 14n) and explosive charges (4a . . . 4n) designed to be detonated by the detonators, the electronic firing switch (3) consisting of a firing-current detection circuit (7), a logic circuit (8), switching relays (10a . . . 10n), a power supply (9) and protective resistors (11a . . . 11n).

Abstract: A process is disclosed for preparing a carbon molecular sieve used for the separation of oxygen from nitrogen, which comprises the steps of:(a) milling hard coal to a grain size of 95%<20.mu.m;(b) oxidizing the finely milled hard coal with air in a fluidized bed;(c) adding water and coal tar pitch as a binder and molding the finely milled hard coal into shape;(d) carbonizing the finely milled hard coal molded into shape in a rotary kiln at a temperature of 500 .degree.to 850.degree. C., with a dwelling time of 55 to 65 minutes, in order to obtain a carbonization product with a bulk density of 530 to 560 g/l;(e) activating the carbonization product with steam at to 900.degree. C. for 165 to 195 minutes to obtain a sintered carbonaceous product having a bulk density of 590 to 650 g/l; and(f) treating the sintered carbonaceous product at 750 to 850.degree. C. with carbon-splitting hydrocarbons to obtain said carbon molecular sieve.

Abstract: A method of geophysical analysis includes transmitting an electromagnetic signal into the earth and measuring the resulting transmission of that signal through the earth to a plurality of spaced recording units. The values of the transmitted signal are locally digitized and stored at each recording unit. The stored data from each recording unit is subsequently transmitted through a telemetric link to a central processing or analyzing unit, the stored data being transmitted from one recording unit at a time and in a preselected sequence. The data may be transmitted from each recording unit in a block and stored in the central processing unit. The digitizing and storing of the measured values at each unit is accomplished through a yield point amplifier. Automatic drift correction processing may also be applied to the measured values obtained from each recording unit.

Abstract: Apparatus is disclosed for the allothermic gasification of coal with steam. The gasifier is horizontally arranged with heat exchange tubes in separate gasification and pyrolysis zones so that a heat exchange medium is used in both zones.

Abstract: A large-scale coking reactor including a housing provided with a chamber and with outer and inner chamber frames, a displaceable outer door elastically compressed against the outer frame and formed with a respective elastic peripheral seal compressible against the frame and with an outer high temperature membrane interposed between the door and the seal and elastically pressed thereagainst to seal the door opening, a displaceable inner door spaced from the outer door and formed with an inner high temperature membrane interposed between the inner door and the inner frame to fit elastically the inner frame, the inner and outer doors being releasably interconnected upon displacing the outer door, so that the doors are mounted in the housing to be operatable either selectively or in combination with one another.

Abstract: Apparatus is disclosed for the allothermic gasification of coal with steam. The gasifier is vertically arranged with heat exchange tubes in separate gasification and pyrolysis zones so that a heat exchange medium is used in both zones.

Abstract: Process for obtaining nitrogen from air or nitrogen-containing gases by pressure exchange adsorption and desorption on two alternately operated adsorbers filled with carbon molecular sieves, whereby air is passed through the adsorber so that the oxygen is adsorbed and enriched nitrogen is obtained, while at the same time the other adsorber is regenerated by pressure relief, whereby in a first carbon molecular sieve layer (on the air intake side) of the two adsorbers, making up 1/20 to 1/2 of the entire carbon molecular sieve layer, a carbon molecular sieve A is introduced which serves simultaneously for the adsorption of the residual humidity and gas separation, and that in a second (on the air-outlet side) carbon molecular sieve layer a carbon molecular sieve B is introduced serving exclusively for gas separation, and that the carbon molecular sieve A has a relative volume of 3.0 to 3.4 and the carbon molecular sieve B has a relative volume of 2.3 to 2.95.

Abstract: A process for producing carbon molecular sieves for the separation of oxygen and nitrogen, whereby finely ground hard coal particles are oxidized with air in a fluidized bed, the coal is then formed after the addition of water and binders and carbonized at temperatures of 800.degree.-900.degree. C., subsequently activated with steam at temperatures of 800.degree.-900.degree. C. and the preliminary product of the low-level activation is treated with carbon splitting hydrocarbons. Starches obtained by reacting agglutinized starches with sulphamates are used as binders.

Abstract: A gradient indicator has a clinometer arranged on a motor-driven turntable allows reversible measurements to be taken and supports the gradient indicator in precisely reproducible positions on bearing faces of the base in the various measurement positions. In addition, the turntable can tilt by a precisely defined angle in the direction of two diametrically opposed calibration axes. Movement of the turntable and evaluation of the measurement results are ensured by a microprocessor. Successive reversible measurements in the measurement and calibration axes allow automatic sensing of measurement values to be obtained with high and constant measurement precision, large measurement range and automatic calibration of the zero-point, scaling factor and gravity g.

Abstract: A container for bulk material includes a hollow glide body provided with inner walls forming an orifice opening into a bottom of the container, outer walls formed shorter than inner walls and a distribution cone formed with respective walls.

Abstract: A process is disclosed for treating carbonaceous catalyst with a gaseous halogen or a gaseous halogen compound to increase the catalytic activity and prolong the useful life of the catalyst. The treatment of the catalyst is conducted at temperatures above about 150 degrees C., preferably with the use of an inert gas, which inert gas is flowed through the carbonaceous material, and which inert gas carries the gaseous halogen or the gaseous halogen compound to the carbonaceous material.

Abstract: A novel pitch material made from coal tar pitch has:a) mesophase content of .ltoreq.2%,b) content of toluene-insolubles (.beta.-resin) between 58 and 75%,c) content of quinoline-insolubles of <2%,d) softening point in the 200.degree. to 300.degree. C. range, according to the Kramer-Sarnow (KS) measurement,e) content of volatile matter .ltoreq.20% andf) ash content of .ltoreq.0.06%.The pitch material of high coke yield (80 to beyond 90%) is suitable for the manufacture of molded carbonaceous shapes of high quality and of pitch coke. A further application would be as impregnation agent or bind. The method of making new pitch uses hot filtration in the presence of a filtration and followed by thin-film evaporation.

Abstract: Process to obtain nitrogen from gas mixtures containing oxygen and nitrogen by using alternating pressure adsorption on carbon molecular sieves, which comprises an adsorption cycle and a desorption cycle, in which the desorption cycle--which may also include the pressure equalization step--includes an idle time, which amounts to between 20 and 80% of the total time of the desorption cycle, plus a correspondingly shortened desorption step, whereby the adsorber decompression line is completely opened at the beginning of the desorption step and is completely closed and kept tightly closed after the decompression to ambient pressure during the subsequent idle period.

Abstract: A method is provided for extracting helium from a relatively helium poor gas mixture through a pressure swing adsorption process which adhieves an enriched product gas containing over 50% helium. The gas mixture to be enriched is fed cyclically to four adsorber vessels ranged in parallel which successively pass through a pressure build-up, an adsorptive and a pressure relief phase, with pressure build-up and relief being in part brought about by pressure compensation with any one of the other adsorbers. The pressure-build up and relief phases include a series of three and four, respectively, steps involving alternating pressure levels. As a preliminary treatment, the process may include an initial step wherein the unenriched gas mixture is first fed through a series of pre-filters filled with activated carbon for removing higher hydrocarbons.

Abstract: A method is provided for the extraction of hellium of high purity, and high yield, with intermediate enrichment in refrigerating plants, from gases containing very low helium concentrations, by an alternating pressure adsorption process. the helium containing gas is fed cyclically in each of three adsorption stages into four adsorbers connected in parallel. First, higher hydrocarbons and other impurities are trapped in adsorbers (J, K, L, M) filled with activated charcoal in a preliminary filtering stage. Other gaseous components, for example nitrogen and/or methane are trapped in adsorbers (A, B, C, D and E, F, G, H) filled with carbon molecular sieves, in two subsequent adsorption stages. The helium is first enriched in stage (I) and then extracted in stage (II) as refined helium with a helium content of 99.9%. The gas used is preferably natural gas with a 2 to 10% helium content.

Abstract: A process for separating hydrocarbons from waste water, in particular aromatic hydrocarbons, by means of an absorbing filtering layer. The hydrocarbons dissolved and non-dissolved in the waste water are separated in a single stage. The waste water is supplied to a metallic slotted multiple tube filter, and a hydrocarbon-containing material, preferably coking duff, is used as an adsorbing filtering layer. Its grain size distribution in the particle size range between 0.05-0.2 mm has a mass proportion of at least 25% by weight, with a total surface area of at least 1500 cm.sup.2 /g. The filtering material can be made to float on the filtering elements or added to the waste water.