Abstract

Gas manufacture is generally carried out in either horizontal, continuous vertical, or intermittent vertical retorts supplemented by carburetted water-gas plant. At the present time a certain amount of gas from coke oven plants is purchased, but only one such installation is at present in use on a gas works primarily for the production of gas. All four types of carbonizing plant, together with the carburetted water-gas plant, are described briefly, and a table is put forward to show the results obtainable from them. Four thermal balance diagrams demonstrate the possibility of heat recovery from the waste flue gases, hot coke, and the hot coal gas by the generation of steam. A brief description of the various ancillary plant employed is given, whilst the production and use of steam is discussed more fully. The use of back-pressure steam is advocated and a table shows the variation of power requirements in six works, two each of the three main types of carbonizing plant. A brief description of the recently reconstructed Brentford works of the Gas Light and Coke Company shows the extent to which mechanical handling of material has been adopted.

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