Title:
OPERATION OF COAL GASIFICATION PLANT
Document Type and Number:
Japanese Patent JPS5432508
Kind Code:
A
Abstract:
A method of operating an entrained flow coal gasifier which comprises the steps of firing coal at two levels in a combustion zone with near stoichiometric air, removing molten ash from the combustion zone, conveying combustion products upwardly from the combustion zone through a reduction zone, injecting additional coal into the combustion products in the reduction zone and gasifying at least a portion of the coal to form low BTU gas, conveying the gas to a point of use, including also reducing gasifier output by modifying the ratio of air to coal supplied to the upper level of the combustion zone so that the ratio becomes increasingly substoichiometric thereby extending the gasification of coal from the reduction zone into the upper level of the combustion zone, and maintaining the lower level of coal in the combustion zone at near stoichiometric conditions so as to provide sufficient heat to maintain effective slagging conditions.
Inventors:
HENRII JIYON BURASUKOFUSUKII
Application Number:
JP9875378A
Publication Date:
March 09, 1979
Filing Date:
August 15, 1978
Export Citation:
Assignee:
COMBUSTION ENG
International Classes:
C10J3/46; (IPC1-7): C10J3/46