Chemical recovery unit

Chemical recovery unit means combustion units burning materials to recover chemical constituents or to produce chemical compounds where there is an existing commercial market for such recovered chemical constituents or compounds. A chemical recovery unit is not an incinerator, a waste-burning kiln, an energy recovery unit or a small, remote incinerator under this subpart. The following seven types of units are considered chemical recovery units:
(1) Units burning only pulping liquors (i.e., black liquor) that are reclaimed in a pulping liquor recovery process and reused in the pulping process;
(2) Units burning only spent sulfuric acid used to produce virgin sulfuric acid;
(3) Units burning only wood or coal feedstock for the production of charcoal;
(4) Units burning only manufacturing byproduct streams/residue containing catalyst metals that are reclaimed and reused as catalysts or used to produce commercial grade catalysts;
(5) Units burning only coke to produce purified carbon monoxide that is used as an intermediate in the production of other chemical compounds;
(6) Units burning only hydrocarbon liquids or solids to produce hydrogen, carbon monoxide, synthesis gas, or other gases for use in other manufacturing processes; and
(7) Units burning only photographic film to recover silver.

Source

40 CFR § 60.2875

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Scoping language

Terms used but not defined in this subpart are defined in the Clean Air Act and subparts A and B of this part.

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