Bergwerksverband Gmbh

Klaus Giessler

Karl K Knoblauch

Ekkehard Richter

Werner Korbacher

Harald Juntgen

Dieter Zundorf

Josef Degel

Joseph S D'Amico

Erwin Pilarczyk

Hans Bukowski

Herbert Reinhold

Klaus-Burkhard Harder

Process for helium enrichment

Pressure swing adsorption with increased recovery of a highly adsorbable product gas component is carried out with a cycling in which, during the flushing phase, and at least over the latter portion thereof, the flushing gas has a concentration in the product gas component which is substantially equal to that of the product gas. To further increase the yield and the concentration of the product gas component in the product gas, the pressure in the absorber is reduced over a time period between the termination of the adsorption phase and the beginning of the desorption phase, with the effluent gas during this reduction in pressure being reused in the pressure swing adsorption cycle.

Method of separating highly adsorbable components in a gas stream in a

A pressure-swing adsorption system is used to enrich the methane content of mine gas obtained from bores around mine shafts or galleries from the customary 25 to 45% by volume to a product gas quality of 50% by volume. Using a carbon molecular sieve adsorbent, the adsorption is carried out at 5 to 8 bar and is followed by a uniflow expansion to an intermediate pressure and a counterflow expansion to a flushing pressure of 1.1 to 2 bar. Counterflow flushing is carried out with waste gas and the product gas is a mixture of the gases obtained by counterflow expansion and flushing.

Method of producing a methane-rich gas mixture from mine gas

Method for separating gas mixtures resulting from direct flow loading of adsorption reactors by means of a pressure change technique in a two stage adsorption reactor consisting of a prefilter and a separating filter, whereby strongly adsorbable impurities from the gas mixture are adsorbed in the prefilter and the remainder of the undesirable gas components are adsorbed in the separating reactor. Thereby, product gas flows off at the end of the separating reactor shortly before the passage therethrough of a non-desirable gas component. Thereafter, the prefilter and the separating reactor are disconnected and the prefilter is partially relieved by a gas counter flow and the separating reactor is partially relieved by direct gas flow. After reconnection of prefilter and separating reactor the unit is further released in the counter current, subsequently rinsed and is again brought to charge pressure in the direct or counter current. The prefilter can be prerinsed before the gas like reconnection with the separating reactor. During rinsing and pressure build up one can use relieve gas. Preferably, four coupled two stage adsorption reactors are used as well as an additional prefilter.

Method for separating gas mixtures by means of a pressure changing

A method using pressure adsorption techniques for separating individual gas components from gas mixtures on adsorption agents in which a gas mixture is fed under increased pressure onto and in contact with an adsorption agent layer maintained in a separation reactor wherein undesirable gas components are adsorbed and thereafter the product gas is discharged so that a subsequent build up of pressure to adsorption pressure takes place in the layer by gas flow in reverse direction with respect to the adsorption direction followed by a subsequent adsorption stage wherein in accordance with the invention the pressure relief and rinsing action are caused to occur in two stages using reverse direction of slow with respect to the direction of adsorption; the relief gas obtained from the first reverse flow pressure relief stage is used as a rinsing gas for the first rinsing stage; the relief gas obtained from the second reverse flow pressure relief stage is discharged as a remainder gas and the product gas is used as a rinsing gas for the second rinsing stage.

Method for separating gas mixtures by means of pressure changing

Bodies are press-molded from a mixture of particulate fuel and a binder. These bodies are heated to a temperature between about 600.degree.-900.degree. C. in a rotary furnace to degas them. The degassing is carried out without subjecting the bodies to mechanical stresses and without permitting combustion of the expelled volatile gases. The resulting shaped coke has a greatly improved abrasion resistance.

Growing community of inventors

Gelsenkirchen, Germany

Klaus Giessler