Patent GB-572141-A (GB)
Title: A process and apparatus for the manufacture of carburetted water gas and like gases
IPC: C10J1/213
Filed: 1943-04-29
Abstract: 572,141. Oil gas generation. STEINSCHLAEGER, M. April. 29, 1943, No. 6801. [Class 55 (ii)] Carburetted water gas or water gas is produced in a discontinuous process by introducing into a chamber containing checker bricks previously heated by means of a hot gas to a predetermined temperature tar or oil or hydrocarbon gas or mixtures thereof and steam or carbon dioxide (or a mixture thereof) to produce the water-gas, and by introducing oil or tar or hydrocarbon gases (or a mixture thereof) into the gases leaving the chamber, which gases are at a temperature and have a sensible heat at least sufficient to crack the oil or tar or hydrocarbon gases. The chamber may be heated by burning a liquid, solid, or gaseous fuel therein. The sensible heat, and if desired part of the potential heat of the gas produced may be used for steam generation or power generation in gas turbines. The cracking of the oil or tar may beeffected in more than one stage at different temperatures, and different grades of oil and/or tar may be used in the various stages. The gases leaving the chamber may be divided into different streams which may be differently treated and then re-united. Tar may be precipitated electrostatically from the gas produced. The tar obtained in the cracking may be partly or wholly recycled, and toluene, benzene, and other liquid or gaseous hydrocarbons may be extracted from the gas before it is used. The tar or oil for burning may be sprayed into the chamber using either part of the energy in the gases produced or steam, carbon dioxide, air, or other gas or vapour. The process may be operated under pressure and catalysts may be used in one or more stages. As shown, a pair of alternately used chambers 1 and 11 is provided. Chamber 1 is provided with a valvecontrolled burner 2, an oil and/or tar valvecontrolled conduit 3, a steam and/or carbon dioxide valve-controlled conduit 4, and a valvecontrolled outlet conduit 5 having an oil and/or tar admission valve-controlled spray nozzle 6. The chamber 1<1> has similar valve-controlled conduits. The manifold 12 has an additional oil and/or tar admission valve-controlled spray nozzle 13. The apparatus also comprises heat exchangers 14 and 15, valve-controtted conduits 16 and 17, a cooler and precipitator 18, valve-controlled conduits 19 and 20, a compressor 21, valve-controlled conduits 22, 23 and 24, turbines 25 and 26, and valve-controlled conduits 27 and 28. In operation, chamber 1 is heated by air and fuel admitted through burner 2, and chamber 1<1> previously similarly heated is used for gas making, oil and/or tar being admitted through conduit 8 and steam and /or carbon dioxide through conduit 9, the water gas formed leaving through conduit 10. Carburetting oil and/or tar is sprayed in through nozzles 11 and 13, and the gas passes through the heat exchanger 1, through conduit 16 and heat exchanger 15, through conduit 17 and cooler and precipitator 18 (whence tar is removed through conduit 20), through conduit 19 to compressor 21 (whence liquid hydrocarbons and liquefied hydrocarbons and other gases are removed through conduit 23), through conduit 24 and heat exchanger 15 to drive turbine 25, and through conduit 27 and heat exchanger 14 to drive turbine 26. The gas can then be sent to a consumer, used for heating a boiler and/or heat exchanger, or used in the plant. Part of the gas may be sent to the consumer after a single carburetting and part after two carburettings.