Abstract: Apparatus for measuring the temperature distribution along the inside walls of narrow, shaft-shaped spaces such as heating flues of coking and similar ovens using a radiation pyrometer with an evaluating arrangement, whereby a radiation optical system is disposed at one of the ends of the space and contains a mirror tiltable about an axis, for optical coverage of the entire length of the space and forwarding of the detected radiation into the path of rays to be evaluated, as well as a positioning arrangement for tilting the mirror over the area to be optically covered. Therewith a fixed mirror is arranged after the tilting mirror and the path of rays to be evaluated is focused to the end of a photoconductor, which, in a transportable and coolable measuring lance, is directed to an evaluating arrangement. The measuring lance can be coarsely and finely positioned by means of a carriage arrangement.

Abstract: An arrangement for floatation of solid particles from liquids such as from sewage, particularly for settling of coal from a conditioned pulp, has a conditioning device from which a pulp flows in a predetermined direction, gasifying device having a gasifying surface extending parallel to the pulp flow direction, and a separating device having a substantially upright conical container for foam formation, a level controlling element, and bubble generator composed of an elastic and porous synthetic plastic material.

Abstract: Small, pourable particles of comminuted coal for coking purposes are gravity-discharged into a stream of hot gas flowing upwardly in a flight stream tube, in a direction inclined and generally opposite to the gas flow direction. Just prior to entry into the gas stream the particles are fluidized so that, on being entrained by the gas stream, they will become uniformly distributed throughout the cross-section of the same. A method and an apparatus are disclosed.

Abstract: A method is disclosed for the adsorptive removal of H.sub.2 S from gas mixtures in C-containing adsorption agents with 1-80 bar pressures and regeneration, employing pressure lowering and/or temperature change and simultaneous rinsing with an at most negligibly absorbable component of the gas mixture. A carbon molecular sieve of fossil and/or bituminous fuel is used, with for pore diameter less than 10 nm a pore volume of 15-25 cm.sup.3 /100 g, and micropore volume in pore diameter range 0.35-10 nm less than 10 cm.sup.3 /100 g. The inner surface of the molecular screen can be freed of surface groups capable of reacting with the H.sub.2 S by aftertreatment with reducing gas.

Abstract: Process of preparing .beta.-isopropylnaphthalene substantially free of corresponding .alpha.-isomer, in yields amounting to 90% and more by a continuous two-stage process comprising (1) alkylating naphthalene with propylene at a temperature of about 150.degree.-280.degree. C. under a pressure of 5 to 30 atm in the presence of a phosphoric acid catalyst supported on a SiO.sub.2 carrier and using a mol ratio of 1/5 to 1/20 mol propylene to 1 mol naphthalene to isopropylate 45 to 65% of the naphthalene and form a mixture of .alpha.- and .beta.-isopropylnaphthalene and then without separating off the unreacted naphthalene, (2) heating the isomeric mixture from stage (1) in the presence of a phosphoric acid catalyst supported on SiO.sub.2, to a temperature of 180.degree.-280.degree. C. under an inert gas pressure of 5 to 30 atm until no further .beta.-isopropylnaphthalene is formed and recovering said .beta.-isopropylnaphthalene from the isomerization mixture.

Abstract: A method for thermal treatment, especially drying, of finely particulated bulk material comprises the steps of stirring the material in a reactor by means of a rotating stirrer while simultaneously discharging a heated gas under pressure through openings in a hollow arm of the stirrer so as to form in the reactor a whirling fluidized bed from the material, and introducing the necessary amount of heat for the thermal treatment of the material at least in part through a heat exchanger extending into the whirling fluidized bed.

Abstract: An arrangement for filling at least one coke oven chamber has a transport device arranged to transport coal, a chute member located under the transport device to guide coal to a filling opening of the coke oven chamber, at least one closing member arranged between the chute member and the filling opening of the coke oven chamber, and a sliding plate moveable in a housing above the chute member between open and closed positions, wherein the sliding plate and the housing in its region in which the sliding plate is in its open position are inclined toward a horizontal.

Abstract: Waste gases pass through a bed of grained adsorption medium moving in a substantially down-stream direction, in a direction which is transverse to the bed movement direction, and a heat exchanger is inserted in the bed of the grained adsorption medium.

Abstract: In combination with a mine roof support including a sole plate resting on the sole of a mine gallery, a roof shield engaging the roof of the mine gallery, and fluid-operated extensible and collapsible props extending between the sole plate and the roof shield for pressing the latter against the roof, a method for controlling the force at which the roof shield is pressed against the roof of the mine gallery comprising the steps of providing an overpressure valve communicating with the interior of each prop and adjusting the opening pressure of the valve in dependence on the inclination of the props with respect to the sole plate; and an arrangement for carrying out the method.

Abstract: The ammonia contained in ammonia- and hydrogen sulfide-containing gas mixtures is selectively removed through a gas washing with an aqueous ammonium sulfite-bisulfite solution, and recovered from the wash solution as a concentrated aqueous solution. For this purpose the coke oven crude gas is washed with an ammonium sulfite-bisulfite solution led in circulation, the surface tension of which amounts to below 80.times.10.sup.-5 N/cm, then the ammonia gas is driven away from the wash solution enriched with ammonia, e.g. by means of steam, and the released ammonia is recovered e.g. as aqueous ammonium solution through condensation of the vapor. The gas mixture is preferably purified or unpurified coke oven crude gas. In order to reduce the surface tension of the wash solution, alkyl sulfate, alkylamine, pyridine base, phenol or homologs thereof are added as surface active substance. The wash circulation is performed at between 15.degree. and 32.degree. C.

Abstract: An adsorption-desorption process for the recovery of hydrogen from a feed gas containing trace pollutants adapted to be strongly adsorbed, in concentrations generally below 1% by volume and containing components adapted for only light adsorption, in concentrations above 1% by volume is operated through a preliminary first adsorption stage for the strongly adsorbable trace pollutants and a second main adsorption stage for the light adsorbable components and for the discharge of hydrogen. Contrary to the prior art where the adsorption-desorption was effected by alternating high pressure and low pressure cycles in the main adsorption stage only, the pressure cycles in the present case are carried out both in the preliminary first adsorption stage and in the second main adsorption stage, preferably by arranging the two adsorption states in series. The process substantially extends the service time of the adsorber used in the first adsorption stage.

Abstract: With hydraulically setting shaped brick, particularly for construction, composed of(a) 4 to 30% by weight hydraulically or similarly acting binding agent, such as cement, high-hydraulic lime, lime or hydraulically reacting plastic or mixtures thereof;(b) about 60 to 95% by weight mineral aggregate material; and(c) 0 to 10% by weight other additions, the raw material basis is extended with regard to aggregate material, and deposited amounts of country rock from mining are reduced, since the aggregate material is composed of country rock (mining waste material) from mining, particularly hard coal mining, with a grain size up to 15 mm and a finest grain portion under 0.2 mm from 10 to 45% by weight. To produce the shaped brick, the mixture is shaped and then hardened. Through particular choice of granulation and density, the mining waste material can be adjusted to desired quality characteristics and the physical characteristics of the shaped brick varied, corresponding to utility.

Abstract: A method of treating a particulate material in a fluidized bed reactor includes supplying a particulate material into a working space above at least one zone which is characterized by reduced passage of a fluidizing gas. A fluidizing bed reactor is designed so that its means for supplying a particulate material is arranged above at least one zone of the reduced passage of the fluidizing gas. The passage of the fluidizing gas in this zone can be completely prevented. Jalousie-shaped inserts are arranged above edges of the zone and have inclined surfaces.

Abstract: A method of cyclic desorption of adsorption agents cyclically loaded with adsorbates is performed in two phases in which a mixture of a desorption vapor and an adsorption vapor is guided over an adsorption medium in a first adsorption phase, a pure desorption vapor is guided over an adsorption medium in a second adsorption phase, and a vapor mixture produced during the second adsorption phase is introduced into the first adsorption phase.

Abstract: Nitrogen is separated from oxygen in air by passing the air through a vessel containing carbonaceous molecular sieve until the sieve has adsorbed a predetermined proportion of oxygen. The vessel is then connected to and pressure-equalized with a similar but desorbed vessel and thereupon the connection is broken and the stream of air switched to the second similar vessel. During the first 1-10 seconds during which the product (N.sub.2) gas issues from the second vessel, this stream is diverted since it contains an unusually high oxygen ratio, and either discharged or recirculated to the incoming air. Thereafter the stream of product gas is collected for further use.

Abstract: Synthetic plastic materials for the manufacture of extrusion, injection and press forms are described, which are prepared from elastomers as well as mixed- and copolymers thereof with thermoplastic properties and liquification products from extractive coal hydrogenation which are residues with a softening point between 50.degree. and 150.degree. C. Polar, aromatic or cyclic groups in the elastomer component increase the compatibility of the coal liquification residue with the elastomer and improve the mechanical properties of the products.

Abstract: An arrangement for sealingly closing an opening of a reaction vessel includes a frame member which bounds the opening and a closing member which is movable between a closing position in juxtaposition with, and an opening position at a spacing from the frame member, as well as a sealing arrangement for sealing the gap between these members in the closing position of the closing member. The sealing arrangement includes an inner seal and an outer seal which define a sealing space filled with a preferably inert gaseous medium. The outer seal includes two sealing elements which extend across the gap in the closing position and define between themselves a confining space, and a liquid seal confined in this confining space. At the upper region, the liquid seal may be confined in an upwardly open horizontal channel and at the lower region it may be contained in a trough-shaped receptacle. The sealing liquid of the liquid seal is preferably circulated through the confining space to act as a cooling medium.

Abstract: A method and an apparatus is provided for charging particulate coal through ceiling holes into a coke oven. A conveyor above the coke oven ceiling is connected with each ceiling hole by a conduit. Mounted in the conduit is a first closure member which is movable to and from a position in which it permits gravity flow of coal from the conveyor to the ceiling hole. Also mounted in the conduit is a second closure member movable to and from a position in which it blocks the escape of gas from the ceiling hole. To charge, the second member is first moved to open position and thereupon the first member; when charging is completed the members are moved in reversed sequence to their closing positions.

Abstract: Synthetic form masses are described which are derived from thermoplastic polyolefins as well as mixed and copolymerisates thereof and a coal liquification product. The coat liquification product is a residue which precipitates out during extractive hydrogenation and has a softening point between 70.degree. and 200.degree. C. The thermoplastic polyolefin contains a component of polar, aromatic or cyclic monomers, which improve the compatibility of the components in the mixture. The form masses from this mixture, which may include filler material, have excellent tear resistance properties.

Abstract: In a method for decreasing the heat, impulse and material exchange in the direct vicinity of the walls of fluidized bed reactors, the flow resistance to the fluid (agitating medium) conducted through the fluidized bed will be increased in the vicinity of the walls to such an extent that the fluidized bed does not do much agitating in this region; moreover the components sticking out of the interior walls of the reactor serve to extend the rib-shapes from the wall projecting into the reaction space or parallel to the reactor wall while forming a slit with the latter. The components can be pre-fabricated segments and the distance of the annular components in the direction of flow of the fluid should at most be about half as great as the height of the ribs lateral thereto.