Krupp Koppers Gmbh

Karl Schmid

Friedrich Jokisch

Vladan Petrovic

Rolf Wetzel

Heinz Rotthaus

Georg Beckmann

Adolf Linke

Bernhard Firnhaber

Bruno Hillinger

Werner Pohl

Wilhelm Jakobi

Wolfgang Schulte

Henner Schmidt-Traub

Bernhard Heinrichs

Cort Starck

Hans-Werner Gosch

Norbert Heger

Richard Wenderoth

Dieter H Heese

In the process for gasification of municipal waste plastic waste material pieces of about a 20 mm piece size are compressed and heated at a pressure of from 40 to 80 bar until at a temperature of from 230.degree. to 300.degree. C. to produce an HCl-containing gas and a plastic waste material containing less than 3000 mg of HCl per kg and the HCl-containing gas produced is washed with water to produce a hydrochloric acid solution. The plastic waste material is then heated further until at a temperature of from 400.degree. to 500.degree. C. to form a plastic melt having a viscosity of less than 300 cSt, advantageously less than 50 cSt. This plastic melt is gasified at a pressure of 4 bar with oxygen in a flame reaction to form a crude gas containing a preponderant proportion of CO in relation to CO.sub.2 in a gasification chamber having a central temperature of about 1600.degree. C. The crude gas is withdrawn from the gasification reactor at a temperature of 1300.degree. to 1600.degree. C., quenched with a water spray to cool it until at a temperature of 700.degree. to 900.degree. C. and then further cooled by indirect heat transfer in a heat exchanger producing steam until at a temperature of from 220.degree. to 300.degree. C. The cooled crude gas is dedusted until a dust content of less than 20 mg/Nm.sup.3 of crude gas is reached and the dedusted gas is washed and desulfurized to form the product gas.

Process for working up municipal plastic waste materials by gasification

The process removes acid components including sulfur oxides and nitrogen oxides from the exhaust gases of industrial furnaces and includes oxidizing the nitrogen oxide contained in the exhaust gases with the oxygen contained in the exhaust gases at a exhaust gases temperature between 300.degree. and 900.degree. C. before entry of the gases into a first absorption stage, with an addition to the exhaust gases of an organic compound, preferably methanol, as a radical former. After oxidation of nitrogen oxides the exhaust gases undergo a two-stage absorption using aqueous ammonium salt solutions as absorption liquid, whose pH-value is continuously adjusted to less than 5 by addition of aqueous ammonia solution. The mol ratio of NO.sub.2 to SO.sub.2 in the exhaust gases introduced to the second absorption stage is maintained between 0.01 and 0.5 by diverting a portion of the exhaust gases prior to the first absorption stage to the second absorption stage. The salt solutions obtained thereby are neutralized together and evaporated, whereby the salts so produced, after pelletization or granulation represent a useful fertilizer.

Process for the removal of acid components and nitrogen oxides from the

A dry cooling installation for coke includes an upright cooling shaft having an upper inlet for coke to be cooled and a lower inlet for a recirculating counterstream of cooling gas. Two gas discharge ducts are connected at two opposite points to the cooling shaft and communicate respectively with dust separators. A waste gas heat boiler is arranged between the separator and communicates with the same so as to receive clean gas in a direction which is substantially perpendicular to the movement of separated dust particles.

Arrangement of a dry cooler for coke

In a coking process, coal to be coked is preheated in a cascaded whirling bed drier into which the coal is charged from above and exposed to an indirect heat transfer while whirling in a coal-stream mixture. Hot gas applied to the heating pipes in respective cascades of the drier is branched off from the total amount of hot gases discharged from a dry cooler in which hot coke from the coke oven is cooled by recirculating cooler gas constituted by a partial gas stream discharged from the cascades of the drier and reunited with the other partial stream subject to a heat exchange for generating steam. Steam from the whirling beds is discharged from the cascaded drier, separated from the entrained dust particles, and then the excessive steam is drained in a branch conduit and the remaining steam is compressed and reintroduced into the lowermost whirling bed in the drier.

Method for drying coal and cooling coke

A transport container for transporting hot particulate materials, particularly coke, has a wall bounding an inner chamber for accommodating a hot particulate material and having an inner side, a coating arranged at the inner side of the wall and composed of a plurality of coating members, and holding elements provided on the inner side of the wall and having a plurality of openings, so that each of the coating members releasably engages in a respective one of the openings and is thereby held by the holding elements, so as to coat the inner side of the wall.

Transport container for transporting hot particulate materials

A travelling bed drier is disclosed, for operation of a carbonization or coking plant in which pre-heating of coal is performed. Adapted so that a fluidized bed drier can be superposed thereon, the travelling. bed drier possesses a heat exchange tube within a frame, the tube displaying a surface increased through suitable design such as fins or ribs, a conical tapering in the direction of the coal feed, and discharge connections located at different levels on a side of the frame lying opposite vapor or hot gas entry, the connections being for the discharge of exhaust gas-containing vapors.

Travelling bed drier apparatus for the operation of a carbonization plant

In a coking process, coal to be coked is preheated in a cascaded whirling bed drier into which the coal is charged from above and exposed to an indirect heat transfer while whirling in a coal-steam mixture. Hot gas applied to the heating pipes in respective cascades of the drier is branched off from the total amount of hot gases discharged from a dry cooler in which hot coke from the coke oven is cooled by recirculating cooler gas constituted by a partial gas stream discharged from the cascades of the drier and reunited with the other partial stream subject to a heat exchange for generating steam. Steam from the whirling beds is discharged from the cascaded drier, separated from the entrained dust particles, and then the excessive steam is drained in a branch conduit and the remaining steam is compressed and reintroduced into the lowermost whirling bed in the drier.

Cascaded coal drier for a coking plant

A cooling device for dry cooling of coke by a counterflow of gaseous cooling medium has a prechamber, a housing including upper and lower parts, a conduit for discharging a gaseous cooling medium, wherein the prechamber form with the housing an annular space of an increased cross-section in the region of the discharge conduit, the prechamber is connected with the housing by a plurality of mounting members distributed over the periphery of the prechamber, and two sliding joints are provided of which one sliding joint slidingly connects the upper wall with the lower wall, and the other sliding joint slidingly connects the prechamber with the upper wall.

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Essen, Germany

Karl Schmid