Krupp Koppers Gmbh

Adolf Linke

Karl-Heinz Dutz

Hans Niermann

Friedrich Jokisch

Rolf Wetzel

Gerhard Wilmer

Hans-Christoph Pohl

Hans-Reiner Schweimanns

Klaus Kohnen

Eberhard Kuske

Manfred Forster

Karl Schmid

Bernhard Firnhaber

Werner Pohl

Hans-Richard Baumann

Ulrich Geidies

Hans R Baumann

Michael Kuehn

Karl-Hein Dutz

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 C. The crude gas is withdrawn from the gasification reactor at a temperature of 1300.degree.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 arrangement for cooling a hot product gas containing adhesive or fusible particles which lose their adhesiveness during cooling, has a reactor for producing the hot product gas, a cooling duct connected with the reactor for the hot product gas, a nozzle ring subdivided into a plurality of chambers mounted adjacent to and communicating with the cooling duct, each of the chambers being structured to introduce a different ring-shaped jet of cooling fluid into the hot product gas in the cooling duct. The different ring-shaped jets are producible with mass and penetration depths according to the mass of a product gas stream flowing in a cooling zone of the cooling duct with injection speeds selected to obtain a predetermined penetration depth. Using different penetration depths for the different ring-shaped jets allows avoidance of baked deposits on the walls of the reactor and cooling duct.

Arrangement for cooling hot product gas with adhesive or fusible

An arrangement for gasification of fuels within the range from fine grain fuel to dust shaped fuels, in a dust cloud with gas comprises a gasification reactor provided with at least two burners, a supply container for accommodating a fuel, a distributor connected to the supply container for receiving the fuel from the supply container, and a plurality of conduits connected with the distributor and supplying the fuel from the latter to the burners, the conduits having a different geometrical parameter including at least one of a length and a direction.

Arrangement for gasifying fuel

A method for cooling a hot product gas containing adhesive or fusible particles include injecting a ring-shaped jet of a cooling fluid into a gas to be cooled in a cooling zone in a flow direction of the gas, with separation of the jet into a plurality of individual cooling fluid jets with mass and penetration depths corresponding to the mass of product gas streams flowing through individual ring-shaped parts of the cooling zone. The injection speed of the cooling fluid jets are selected so as to obtain a desired penetration depth.

Method of cooling hot product gas with adhesive or fusible particles

The process for determining and controlling the fuel mass flow in partial oxidation and gasification of a fine-grained to powdery fuel includes particularly drawing the fuel from the supply vessel through a single outlet pipe and feeding the fuel to a distributor, in which a plurality of individual supply lines are connected to the individual burners, the fuel mass flow rate in the supply lines depending on the speed measured there and the radiometric density measurement being determined in the outlet pipe of the supply vessel. For control of the fuel mass flow a stepwise regulation depending on the crude gas flow produced in the gasification unit is thus provided.

Process for determination and control of fuel mass flow in partial

A waste heat boiler for cooling partial oxidation crude gas comprises a pressure container, a crude gas-clean gas heat exchanger in the container, a tubular body formed as a tubular basket and arranged in the pressure container, the crude gas-clean gas heat exchanger being arranged inside the tubular basket, and heating surfaces associated with the crude gas-clean gas heat exchanger.

Waste heat boiler for cooling of partial oxidation crude gas

In an electric energy generating plant including a coal gasification arrangement and a combined gas turbine and steam combine, hot raw gas generated in the gasification arrangement is fed via a heat-exchanging and dust separating unit into a desulfurization unit from which cool purified gas is discharged. The heat exchanging unit includes a tubular pressure resistant housing serving as a feeding passage for the hot raw gas and enclosing a coaxial arrangement of a tubular pipe-wall housing of a waste-heat recovery boiler, and pipe spirals of a raw gas/purified gas heat exchanger. The waste-heat recovery boiler delivers superheated steam to the steam turbine and the raw gas/purified gas heat exchanger delivers heated purified gas to the gas turbine.

Method of and device for recovering heat energy of hot raw gas gererated

A stuffing box sealing arrangement for sealing a rotary shaft which extends into a pressure space includes two separate consecutive pressure chambers arranged at axially spaced locations along the shaft and an intervening space sealed with respect to the exterior of the arrangement and the pressure space and arranged between the pressure chambers. A plurality of stuffing sealing rings is accommodated in each of the pressure chambers and two glands are provided each being arranged around the shaft at one of the locations in registry with the respective associated plurality of stuffing sealing rings. Each of the glands is independently pressed against the respective associated plurality of stuffing sealing rings, and lubrication water is supplied into the intervening space to continuously lubricate both pluralities of stuffing sealing rings.

Stuffing box sealing arrangement

In a method of treating waste water obtained in a direct washing with water of raw gas in a plant for a gasification of gas, the waste water is first settled in a settling tank and a resultant concentrated slime-containing water is subjected to a multi-stage oxidation with air or oxygen only at the temperatures of between 20.degree. C., and 80.degree. C., and the slime-containing water obtained after the oxidation is conveyed to a filtration system or a slime-depositing container.

Method of treatment of waste water obtained in a gasification plant

A pneumatic or electrical signal indicating the flow mass of a fine-grained fuel suspended in a carrier gas is produced by computer means. The input for the computer is constituted by the quantity determined for the volume of the carrier gas and the quantity determined for the density of the carrier gas together with the quantity determined as the specific weight of the fuel and the quantity determined by a radiometric measurement of the total density of the fuel and carrier gas flow. The computer is programmed to produce the above signal on the basis of a mathematical relationship defined in the above text. A valve controlling the feed of fuel into a gasifier is operated by the signal produced by the computer.

Process for monitoring the flow of fine grained solid fuel for use in

The arrangement includes a source of finely divided solid combustible material fluidized in an inert gas, and also a source of combustion-supporting gas, such as oxygen, air, or oxygen-enriched air. A gasifier is provided for gasifying finely divided solid combustible material by reacting the same with combustion-supporting gas, and the gasifier has one or more inlets. A first conduit connects the source of combustible material to an inlet of the gasifier. A second conduit connects the source of combustion-supporting gas to an inlet of the gasifier. A pressure-regulating unit is automatically operative for maintaining the pressure of fluidized combustible material entering the gasifier higher than the pressure of combustion-supporting gas entering the gasifier and higher than the pressure of gases in the gasifier, to prevent the combustion-supporting gas and also the gases in the gasifier from passing out of the gasifier into the first conduit and becoming mixed with fluidized combustible material before such combustible material can enter the gasifier.

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Essen, Germany

Adolf Linke