Is combustion in the acidic gas burner during hot operation subchemical combustion or superchemical combustion?
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This post was last edited by adsl121 on 2010-6-26 01:40. Is combustion in an acidic gas combustion furnace a subchemical combustion or a superchemical combustion during its hot operation?
This post was last edited by adsl121 on 2010-6-26 01:40. The question posed by the original poster is too technical; I don’t understand what it means! ! I have a gentle question: what is subchemical combustion? ?
Subchemical combustion is combustion in which there is a lack of oxygen compared to the amount required by the combustible material. Hyperchemical combustion is combustion in which there is an excess of oxygen compared to the combustible material. We employ Maersk’s Super Claus process, which imposes strict requirements on the combustion process during the hot operation of the acid gas burners; therefore, we are discussing this matter with you here.
This post was last edited by adsl121 on 2010-6-26 01:41. Let’s have a chemical burn party! Isn’t the low-temperature catalytic conversion at the rear meant to ensure a 2:1 ratio of hydrogen sulfide to sulfur dioxide? This requires that a portion of the hydrogen sulfide in the furnace not be converted....
This post was last edited by adsl121 on 2010-6-26 01:41. Hehe, different names! The acid gas combustion furnaces in use today are basically all operated in subchemical combustion (what we call lean-burn combustion, or a residual oxygen coefficient of less than 1). The statement above is correct – to maintain the proper ratio between H2S and SO2, subchemical combustion is the only option! ~
This post was last edited by adsl121 on 2010-6-26 01:42. We call it the partial combustion method
This post was last edited by adsl121 on 2010-6-26 01:42. In combustion at a sub-stoichiometric ratio, an excess of oxygen leads to an increase in sulfur dioxide, thereby reducing the yield of sulfur; furthermore, oxygen reacts with iron sulfide, which can cause accidents.
This post was last edited by adsl121 on 2010-6-26 01:42. We call it oxygen-deficient combustion! You mean when the stove is heating up, right! If it is the first time starting up, peroxide is still required; whereas after maintenance, equivalent combustion can be used, as sulfur removal and hot soaking have already been carried out before shutting down!