Coal gasification processes and technologies
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Question: For lump coal, dry coal powder, and gas produced by ash pyrolysis – to achieve a high concentration of carbon monoxide, what method should be used? Who has the skills? This post was last edited by dreaming on 2009-4-8 12:36.]
It depends on which type of coal you plan to gasify – bituminous coal in lump form: for atmospheric pressure conditions, there is a fixed-bed system, but it seems that **its use is not allowed**； The pressurized Lurgi furnace can now be produced domestically, and the technology is also well-developed. Dry powder gasification – I haven’t heard of any technology that’s highly mature in this area; there are many problems with it ； Gray coalescing gasification – I have participated in pilot tests; bituminous coal can be gasified, but it is not possible to operate on a long-term basis, and the composition of the gases does not seem to be very ideal either.
I mainly want to increase the carbon monoxide content in the gas. Do you have any information on this that I can use as a reference? Thank you! This post was last edited by dreaming on 2009-4-8 at 12:40.]
1. Control the flow rate of gases such as oxygen. 2. Replace the catalyst with one that has high selectivity for carbon monoxide. 3. Control the gasification temperature. I remember having seen literature on this topic when we were doing experiments; you can look into that literature. 4. Another thing is to control the particle size of coal. Particle size has a significant impact on the gasification products.