ssion of sulfur into the atmosphere. The process can be especially important in the fication of coal, which contains significant amounts of sulfur that is converted to H2S fication. In the Claus process, the H2S-rich product gas recovered from an acid-gas re em following the gasifier is split, with one-third going to a furnace where the hydroge ide is burned at 1 atm with a stoichiometric amount of air to form SO2. 3 → H2S +02→ SO2 + H2O hot gases leave the furnace and are cooled prior to being mixed with the remainder of -rich gases. The mixed gas is then fed to a catalytic reactor where hydrogen sulfide an et to form elemental sulfur → 2H2S + SO2 → 2H2O+ 3S coal available to the gasification process is 0.6 wt% sulfur, and you may assume that sulfur is converted to H2S, which is then fed to the Claus plant. Estimate the feed rate ne Claus plant in kg/kg coal. (Hint: Assume that air is composed of 21% O2 and 79% )
ssion of sulfur into the atmosphere. The process can be especially important in the fication of coal, which contains significant amounts of sulfur that is converted to H2S fication. In the Claus process, the H2S-rich product gas recovered from an acid-gas re em following the gasifier is split, with one-third going to a furnace where the hydroge ide is burned at 1 atm with a stoichiometric amount of air to form SO2. 3 → H2S +02→ SO2 + H2O hot gases leave the furnace and are cooled prior to being mixed with the remainder of -rich gases. The mixed gas is then fed to a catalytic reactor where hydrogen sulfide an et to form elemental sulfur → 2H2S + SO2 → 2H2O+ 3S coal available to the gasification process is 0.6 wt% sulfur, and you may assume that sulfur is converted to H2S, which is then fed to the Claus plant. Estimate the feed rate ne Claus plant in kg/kg coal. (Hint: Assume that air is composed of 21% O2 and 79% )
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Transcribed Image Text:A Claus plant converts gaseous sulfur compounds to elemental sulfur, thereby eliminating
emission of sulfur into the atmosphere. The process can be especially important in the
gasification of coal, which contains significant amounts of sulfur that is converted to H2S during
gasification. In the Claus process, the H2S-rich product gas recovered from an acid-gas removal
system following the gasifier is split, with one-third going to a furnace where the hydrogen
sulfide is burned at 1 atm with a stoichiometric amount of air to form SO2.
3
- H2S +- 02 → SO2 + H2O
The hot gases leave the furnace and are cooled prior to being mixed with the remainder of the
H2S-rich gases. The mixed gas is then fed to a catalytic reactor where hydrogen sulfide and SO2
react to form elemental sulfur
> 2H,S + SO, → 2H2O + 3S
The coal available to the gasification process is 0.6 wt% sulfur, and you may assume that all of
the sulfur is converted to H2S, which is then fed to the Claus plant. Estimate the feed rate of air
to the Claus plant in kg/kg coal. (Hint: Assume that air is composed of 21% O2 and 79% N2 )
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