Sam Robinson

US Patent:

42501580, Feb 10, 1981

Filed:

Feb 15, 1978

Appl. No.:

5/878088

Inventors:

Age Solbakken - Montgomery TX
Fred P. Apffel - Houston TX
Sam P. Robinson - Houston TX
Bobby L. Hayes - Houston TX

Assignee:

Intenco, Inc. - Houston TX

International Classification:

C01B 3102
C09C 148

US Classification:

423449

Abstract:

The invention is a process for economically recovering carbon black, tar, oil and fuel gas from used tires. Used tires are physically sliced and fragmented. The fragments are pyrolized in an oxygen-limited, hydrocarbon vapor at subatmospheric pressure while being refluxed with process tar condensate. Vapor phase products of the pyrolysis are fractionated into tar, oil and fuel gas. The fuel gas can be compressed and burnt to provide process heat. Solid phase pyrolysis products are stripped of trash and milled to carbon black in an air swept roller mill. Carbon black is mechanically separated from the effluent air stream of the roller mill and formed into pellets that are dried in a series multi-stage fluid bed dryer.

US Patent:

41983840, Apr 15, 1980

Filed:

Nov 11, 1977

Appl. No.:

5/850641

Inventors:

Sam P. Robinson - Houston TX

Assignee:

James G. Brown & Associates, Inc. - Houston TX

International Classification:

C01B 718
C01B 700
C01B 722

US Classification:

423488

Abstract:

A method and apparatus for disposing of waste material by means of a multi-stage reaction favoring desired reaction products. The rate at which different reactions reach equilibrium at different temperatures and the effects of reaction stoichiometry are controlled by the process to promote desired reactions and discriminate against undesired ones. In the preferred embodiment, the present invention is a method of incinerating chlorinated hydrocarbons comprising reacting the chlorinated hydrocarbon at high temperature with less than a stoichiometric amount of oxygen for a period of time minimizing generation of nitrogen oxides; quenching the reacting chlorinated hydrocarbon-air mixture with water, whereby phosgene generated in the first part of the reaction is hydrolized, free chlorine is minimized and the temperature of the reacting chlorinated hydrocarbon-air mixture is reduced to a lower temperature to minimize generation of nitrogen oxides; further reacting the chlorinated hydrocarbon-air-steam reaction mixture at said lower temperature for a period of time not long enough to allow the formation of a significant amount of nitrogen oxides; adding additional air to the reacting chlorinated hydrocarbon-air-steam mixture to further reduce the temperature of said reacting mixture and to provide a stoichiometric excess of oxygen and lower the reaction temperature; further reacting said chlorinated hydrocarbon-air-water mixture with said stoichiometric excess of oxygen at said still lower temperature for a period of time long enough to fully react said chlorinated hydrocarbon to HCl, CO. sub. 2 and H. sub. 2 O, but still sufficiently short to prevent formation of a significant amount of nitrogen oxides; heating water and generating steam from indirect heat exchange with the effluent gas stream; and scrubbing hydrogen chloride gas out of said effluent gas stream. Apparatus is provided to permit this stage-wise reaction and to control the addition of quench water and air, as well as the addition of any additional hydrocarbon fuel, as needed, to insure minimum generation of nascent oxygen and chlorine and nitrogen oxides while insuring substantially all the chlorine in the combustion gas stream is converted into hydrogen chloride.

US Patent:

42846161, Aug 18, 1981

Filed:

Jan 15, 1979

Appl. No.:

6/003655

Inventors:

Age Solbakken - Montgomery TX
Fred P. Apffel - Houston TX
Sam P. Robinson - Houston TX
Bobby L. Hayes - Houston TX

Assignee:

Intenco, Inc.

International Classification:

C01B 3102
C01B 3100
C09C 148

US Classification:

423461

Abstract:

The invention is a process for economically recovering carbon black, oil and fuel gas from used tires. Used tires are physically fragmented. The fragments are pyrolized at slightly subatmospheric pressure in a reactor while process char is being recycled to increase heat transfer and avoid coke on heat transfer surfaces. Entrained char is separated from the vapor phase products of the pyrolysis, and the vapor phase products of the pyrolysis are then fractionated into oil and fuel gas. A preferred embodiment condenses reactor vapors in two stages at two temperature levels to separate dust from an oil-dust mixture, without water in the first stage and light oil in the second stage. The fuel gas can be compressed and burnt to provide process heat. The entrained char dust and some heavy oil is returned to the reactor. Solid phase pyrolysis products are stripped of trash and milled to carbon black.