Method for purifying liquid fuel boiler smoke by cooling and was

Details Method for purifying liquid fuel boiler smoke by cooling and was Method for purifying liquid fuel boiler smoke by cooling and was

1993-08-12

1994-10-04

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210737, 95152, 95197, 95202, 95205, 95227, 95237, B01D 4706

Patent

active

053523660

ABSTRACT:
To purify smoke from a liquid fuel (in particular heavy fuel oil) boiler by eliminating unwanted components including acids, the smoke, before it is exhausted to the atmosphere, is caused to pass along a vertical path in a heat exchanger adapted to recover the latent heat of condensible components together with the substantive heat of the smoke. Water is sprayed at the top of the vertical path and collected at the bottom in the form of an effluent comprising the water, condensates and soot. A reserve water supply is provided. Water is fed from this reserve supply to the top of the heat exchanger where it is sprayed after adding to it an alkaline solution in sufficient quantity to neutralize acid components of the smoke. The effluent is recovered at the bottom of the heat exchanger. An effective dose of a floculating agent is added to it. The effluent is fed into a settling tank where is separates into a soot sludge and a clarified effluent which is fed to the reserve water supply.

REFERENCES:
patent: 4169053 (1979-09-01), Sakakibara et al.
patent: 4170458 (1979-10-01), Hartwick
patent: 4328011 (1982-05-01), Geidies et al.
patent: 4600561 (1986-07-01), Frei
patent: 4723468 (1988-02-01), Schippert et al.
patent: 4959084 (1990-09-01), Wolverton et al.
patent: 4964885 (1990-10-01), Wieser-Linhart

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