Abstract There is provided a process for producing water gas containing a large quantity of hydrogen and involving the formation of a moving quiescent gas-permeable bed composed of both particles of coal and particles of spent coal or ash. The bed is passed through a series of zones in which, in a succession of cycles, the bed is permeated with an oxygen-containing gas preheated to a predetermined temperature and then a moisture-laden gas also preheated to a predetermined temperature. These gases are collected separately after they traverse the moving quiescent bed. The water gas may be used as an industrial gas, and the producr-flue gas resulting from the portions treated with oxygencontaining gas may be recycled through the bed at a point downstream. The process provides a continuous economic procedure for gasification of coal.
a moisture-laden gas at a temperature of from 800* to 1, 400* F. to yield high hydrogen water gas; c. separately collecting the producer flue gas, and d. separately collecting the high hydrogen water gas.
Claim 2
Dependent Claim
14 words
A process in accordance with claim 1 in which the oxygen-containing gas is air.
Claim 3
Dependent Claim
32 words
A process in accordance with claim 1 in which at least a portion of the producer flue gas is recycled through the burden in a separate zone following said series in zones.
Claim 4
Dependent Claim
24 words
A process in accordance with claim 3 in which the producer flue gas is mixed with fresh air prior to recycling through the bed.
Claim 5
Dependent Claim
29 words
A process in accordance with claim 1 in which the oxygen-containing gas is preheated by passage through the bed in a recuperating zone downstream of said series of zones.
Claim 6
Dependent Claim
15 words
A process in accordance with claim 5 in which the oxygen-containing gas is ambient air.
Claim 7
Dependent Claim
14 words
A process in accordance with claim 1 in which the moisture-laden gas is steam.
Claim 8
Dependent Claim
29 words
A process in accordance with claim 1 in which the moisture-laden gas is preheated by passage through the bed in a recuperating zone downstream of said series of zones.
Claim 9
Dependent Claim
39 words
A process in accordance with claim 1 in which the moisture-laden gas is produced in a bed quenching zone wherein water is directed onto the upper surface of said bed and the resulting gas drawn downwardly through said bed.
Claim 10
Dependent Claim
37 words
A process in accordance with claim 9 in which the moisture-laden gas is directed upwardly through the bed in a zone next preceding said quenching zone to elevate the temperature thereof to from 800* to 1,400* F.