PULVERISED FUEL

Evening Post, Volume CVII, Issue 104, 3 May 1924, Page 16

PULVERISED FUEL

MODERN METHODS FOE POWER GENERATION.

The Union d'Electricite, which has power stations at, Gennevilliers and Vitry, near Paris, for the supply of elec-tric-power to the city and-its environs, has placed another large order for pulverised fuel plants with the company asscociated with Vickers and International Combustion Engineering, Ltd., of London. It is for the power station at Gennevilliers, which is now worked with It. and AY. and Stirling boilers having multiple-retort and chain-grate stokers" states the "Daily Telegraph." For the new extension the engineers of the Union d'Electricte have decided upon Ladd-Belleville boilers and Lopulco plant for pulverised fuel firing, and this decision. is significant in view of the fact that the mechanical stokers already working in fie station represent the very last word in modern practice. The following are some'leading particulars of the new contract: Four boilers of Ladd-Belleville type each of 19,500 square feet heating surface, to work at 4401b per square inch, and give 150,0001b of steam per hour at full load, also an overload of 240,0001b for two hours. This overload is only made possible by the boilers being fired with coal in powdered form. The fuels, on which the guarantees are given, show a wide variation, in one case of 11 per cent, of ash and 17 per cent, of volatiles, and in the other 20 per cent, of ash and 8 per cent, of volatiles.

_ The pulverised fuel plant will include eight Lopulco gravity coal driers, eight Raymond roller mills, each to grind six tons of coal per hour; forty-eight Lopulco variable speed-feeders,, and also burners of fish-tail patterns. The combustion chamber of each boiler will be of the Combustion Company's special design, Having air-cooled -walls and ports to admit the pre-heated air to various parts of the flame to ensure complete combustion of _ the fuel. The chamber is also fited with Lopulco water screen to prevent the ash from slagging and enable it to be easily handled. This new contract is in a sense a repeat order, because similar plant is already in hand for the power station at Vitry, owned by the same power company. . One of the companies associated with Vickers and International Combustion Engineering, Ltd., has received a contract to equip the new power plant of the Societe Metallurgique de Hoboken, near Antwerp, with boijers arranged to use pulverised coal and Lopulco equipment. This is the second large order recently placed in Belgium for such plant, the other being a power station at Charbonnages de Beeringen, in Limbourg, which has four Ladd boilers, each 7000 . square feet heating surface, and enough pulverising plant to supply also eight existing B. and W. boilers.