The major gaseous emissions in this industry are odorous, total reduced sulfur (TRS) compounds, characteristic of Kraft pulp mills. The principal components are hydrogen sulfide (H2S), methyl mercaptan (CH3SH), dimethyl sulfide ((CH3)2S), and dimethyl disulfide ((CH3)2S2). In addition, emissions of noncondensible gases such as acetone and methanol are common. Emissions from uncontrolled sources, such as digester and evaporator, relief, and blow
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