Bayer Aktiengesellschaft

Kleinewefers Industrie Companie Gmbh

Kleinewefers Energie-und Umwelttechnik Gmbh

Werner Huning

Rolf Germerdonk

Claus Gockel

Gotz-Gerald Borger

Adam Jonas

Otto Carlowitz

Gunter Brinkmann

Georg Richter

Karl Wrabetz

Kurt Noll

Heinrich Rathjen

Herbert Wiebe

Werner Biester

Hans J Himmen

Rudolf Cirkel

The mass-transfer apparatus is based on the principle of the gas washer in which a liquid is injected into the hot gas stream. The apparatus consists essentially of a gas feed pipe (1), which discharges vertically into an injection chamber (2) of greater diameter. Connected to the injection chamber (2) is a mass-transfer duct (12) with a diffuser (13). The injection chamber (2) is closed at its upper end against the gas feed pipe (1) with an annular roof (4). In the annular roof (4) are arranged liquid nozzles (5), directed at an angle downwards. The gas feed pipe (1) does not terminate flush with the annular roof (4) but is extended into the injection chamber (2) in the form of a gas skirt tube (8), so that the liquid nozzles (5) in the annular roof (4) are protected from the hot gas stream.

Apparatus for mass transfer between a hot gas stream and a liquid

The device for feeding waste air and/or combustion air to a burner has an upstream cyclindrical swirl inlet system (inlet header 1) with feeder nozzles (8,9) leading in tangentially. The main nozzle (8) is here provided at a radial distance R from the burner axis on the inlet header (1), which distance is greater than the radius r of the combustion chamber (4). By means of this increase in the swirl radius, a substantially higher swirl intensity can be generated at small throughputs. In order to avoid an undue rise in the swirl at higher throughputs, a secondary flow (7), which is fed in via a control element (11), is introduced into the inlet header (1) via a secondary nozzle (9) tangentially and opposite to the main swirling flow. Alternatively, the secondary flow (7) can also be fed to the inlet header (1) via inlet slots (14) substantially at right angles to the direction of the main flow. In both cases, the tangential flow component of the main flow (6) is slowed down. The control element (11) in the secondary flow (7) is advantageously designed in such a way that the secondary flow (7) sets in only when the main flow throughput rises to 50% to 60% of the nominal throughput.

Device for feeding waste air and/or combustion air to a burner or

An apparatus and method for the protection of a pipe containing an inflammable gas against back fire. The apparatus comprises a container partially filled with liquid extending along a given length of the container and at a give level, at least one gas feed pipe, and at least one horizontal inlet pipe, each immersed in the liquid and sealed at one end and receptive of gas at the other end from the feed pipe. Each inlet pipe has holes in its circumferential surface for the introduction of the gas into the liquid, with the number of holes and the dimensions thereof such that at the maximum gas volume flow rate, the outflow rate through the holes is at the most 40 m/sec and the rate in each gas feed pipe is at the most 20/sec. Additionally, each inlet pipe extends over only part of the length of the liquid in the container. A gas outlet nozzle is positioned above that part of the container where there is no pipe and a calming grid is disposed at the liquid level to subdue waves in the liquid.

Immersed safety device and method for protection against back-fire in

In the thermal purification of effluent gases charged with noxious substances by burning them with air at high temperatures, the improvement which comprises drawing the effluent gases charged with noxious substances through a zone established by a device which provides protection against back-firing and a combustion zone which is resistant to bursts of pressure of up to about 10 bars, and burning the effluent gases in the combustion zone at a temperature of about 800.degree. to 1000.degree. C. To carry out the process there is provided an apparatus comprising a back-firing safety device followed by a heat exchanger and then a combustion chamber. Components of the heat exchanger are made resistant to pressures of up to about 10 bars and the safety device prevents back-firing to the plant wherein the effluent gases are produced.

Process and apparatus for thermally purifying effluent gases

In the complete and safe purification of waste gases which contain organic or inorganic combustible substances by thermal decomposition at temperatures between about 800.degree. C. and 1000.degree. C., wherein the amount of waste gas supplied to an inlet varies in time within wide limits and also the concentration of oxygen and combustible substances varies in such a way that the lower explosion limit is at times exceeded in the waste gas and wherein supplementary fuel is optionally added for the maintenance of the decomposition temperature, the improvement which comprises

Method of purifying gases by combustion

A process for the thermal decomposition of polychorinated organic compounds such as polychlorinated phenyls and biphenyls comprising heat treating the polychlorinated organic compounds in a flame, in a high-turbulence combustion chamber in a pulsating spiral flow at a temperature of at least about 850.degree. C. with a residence time of at least about 0.1 second, an excess of at least about 5% by weight of oxygen, based on the organic carbon to be burnt, being present in the combustion chamber. Advantageously the polychlorinated organic compound is present in the fuel feed in about 0.1 to 30% by weight.

Thermal decomposition of polychlorinated organic compounds

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Odenthal, Germany

Werner Huning