Can COS be reacted or hydrolyzed in acid gas burners?
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I saw a material balance sheet for sulfur; the raw acidic gas contained about 1% COS, and this amount dropped to 0 after it left the furnace. Can COS be reacted or hydrolyzed in the acidic gas combustion furnace? It would be good if no COS is produced at all
COS should be generated in the reactor, and undergo hydrolysis reaction in the primary converter and the hydrogenation reactor. But I would appreciate some advice on whether it can be reacted in a reactor!
About 1% of COS present in the acidic gas of the raw materials can be completely reacted in the combustion furnace.
COS can usually be reacted away in the reactor, but hydrolysis must not occur; oxidation should take place instead.
COS+H2O=CO2+H2S 2COS+SO2=3/2S2+CO2 COS+CO+SO2=S2+2CO2 COS+3/2O2=CO2+SO2 2COS=2CO+S2. Which of these reactions occur under the conditions of a combustion furnace, and which is the reaction that primarily consumes COS?
The main forms of COS exist as CH4 and hydrocarbons that are produced as a result of reactions in the reactor; only a very small amount is present in acidic gases. It can be removed only through hydrolysis in a converter, unless the acidic gases contain no hydrocarbons or CH4:handshake
The presence of COS in the feed gas will not have a significant impact; equilibrium will be re-established throughout the sulfur production furnace, and it is not allowed for it to enter the reactor directly. In the regenerated sulfur combustion furnace, COS will react and redistribute again, but it will not disappear
Under normal conditions, the COS content should be relatively low; whether it is in acidic gas or process gas, it should be able to react completely within the furnace.
Being able to react completely in a reactor – is that the result of the reaction? Should I still react to it? If it reacts, then the hydrolysis reaction in the converter is not necessary. Don’t you think so?
In the combustion furnace, there are reactions that consume COS as well as reactions that produce COS； In a combustion furnace, COS cannot be completely consumed; an equilibrium may be reached (depending on the gas composition and operating conditions). After catalytic hydrolysis, COS may become trace amounts (complete 100% hydrolysis should be difficult), making it undetectable. This post was last edited by haichuaner on 2009-3-24 16:29]
COS is difficult to remove in the combustion furnace, as most COS is generated there; unless the acidic gases do not contain hydrocarbons
This post was last edited by haiyangqh on 2014-7-19 at 17:55. Part of it undergoes reaction in the combustion furnace, part in the reactor (with the majority undergoing hydrolysis); another part is burned in the incinerator and some is vented. As for the proportions, I can check if needed