WATER GAS
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secondary jet of steam is admitted to the secoacl generator, which, passing through the hot chequer brickwork, meets the rising stream of water gas and oxidizes a proportion of the CO into C02. By this means it is possible to reduce the CO con-tained to as low as 15 per cent.
The Rincker-Wolter Plant
The system known as the Rincker-Wolter has been working for some years. at the Utrecht gasworks, and the plant seems to have proved itself an effective and economical adjunct to the coal-gas apparatus. Its chief dissimilarity from other plants lies in the faet that waste oil, however inferior, may be employed for carburet-ting purposes. Both coal-gas and water-gas tar have been used.
As can be seen from the diagrammatic sketch (Fig. 456), the plant consists
Fig. 456.—The “ Rincker-Wolter ” Water-Gas Plant.
of two identical generators, and no other vessels are used for the production and enrichment of the gas. The generators are lined throughout witli firebricks, and the fuel sprays pass through the centre of the charging-door lids. In Order to follow out the principle of the system, it is essential tliat the functions of the various Connections ort the generators sliould be understood. Near the top of each generator is a tube connecting the two sliells, and by means of this the gas produced in one generator may pass to the other. In addition, both generators are fitted wit.li primary and secondary air supplies from a central blast pipe. Ilie primary air inlets are below the firebars, whereas the secondary air is admitted at a point on a level witli the top of the fuel-bed. There is a gas outlet to each generator. These are below the firebars, and they split up into a two-way pipe, one brancli of which leads to a stack-pipe, the other passing to a hydraulic main which connects the generator to the cooling and washing apparatus. Each generator is fitted with a steam supply, the steam being introduced beneath the fuel-bed in the usual way.
The apparatus is started in the same way as- the ordinary water-gas plant;