Method of treating coal to reduce sulphur and chlorine emissions

Details Method of treating coal to reduce sulphur and chlorine emissions Method of treating coal to reduce sulphur and chlorine emissions

1994-03-15

1996-04-09

Willis, Jr., Prince

Fuel and related compositions

Coal treating process or product thereof

Removal of undesirable

44622, C10L 900

Patent

active

055057462

ABSTRACT:
Methods and compositions are provided for treating coal to reduce the emissions of sulphur dioxide and hydrogen chloride gases upon combustion. In the subject method, coal is washed with a calcium anion wash solution, such as calcium hydroxide solution, and then separated from the wash solution. The treated coal exhibits reduced emissions of both sulphur dioxide and hydrogen chloride gas on combustion as compared with untreated coal.

REFERENCES:
patent: 4092125 (1978-05-01), Stambaugh et al.
patent: 4148613 (1979-04-01), Myers
patent: 4167397 (1979-09-01), Grant
patent: 4226601 (1980-10-01), Smith
patent: 4468231 (1984-08-01), Bartok et al.
patent: 4886519 (1989-12-01), Hayes et al.
Daybell & Pringle, "The Mode of Occurrence of Chlorine in Coal," Fuel (1958) 37: 238-247 (month unknown).

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