Gasifier with economizer gas exit temperature control

Details Gasifier with economizer gas exit temperature control Gasifier with economizer gas exit temperature control

1984-12-26

1986-02-11

Kratz, Peter

Gas: heating and illuminating

Generators

Cupola

48 67, 122 5, 122 6A, 122 7R, C10J 348, C10J 386

Patent

active

045696802

ABSTRACT:
A gasifier (10) having an associated boiler (26, 32, 42, 48), for converting coal to combustible gas, and also having a desulfurizer (20) downstream of the gasifier. In order to maintain the gas leaving the gasifier and flowing to the desulfurizer above a predetermined temperature, even when operating the unit at reduced loads, a temperature sensing device (56) continuously monitors the gas temperature upstream of the desulfurizer. If the temperature drops below a predetermined value, high temperature boiler water (62) is introduced to the economizer (26) rather than feed water (24), so that less heat is absorbed by the economizer from the gases under these conditions.

REFERENCES:
patent: 4098324 (1978-07-01), Kummel et al.
patent: 4158552 (1979-06-01), Blaskowski et al.
patent: 4168956 (1979-09-01), Blaskowski
patent: 4248604 (1981-02-01), Woldy et al.
patent: 4343627 (1982-08-01), Tonca
patent: 4493291 (1985-01-01), Zabelka

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