Ohio Administrative Code › Title 3745 - Ohio Environmental Protection Agency › Chapter 3745-73 - Total Reduced Sulfur › Section 3745-73-01 - Definitions and reference to materials

Current through all regulations passed and filed through July 1, 2024
The definitions in this rule apply to this chapter.
(A) "Black liquor" means the spent cooking
			 liquor, composed of a mixture of dissolved lignins and inorganic compounds,
			 which remains after the digestion of wood chips in the Kraft pulping
			 process.
(B) "Black liquor solids"
			 means the dry solids which enter the recovery furnace in the black
			 liquor.
(C) "Condensate stripper
			 system" means a system in which total reduced sulfur gasses, partially
			 dissolved in the digester and multiple effect evaporator off-gas condensate,
			 are stripped by means of a countercurrent flow of air or steam in multi-stage
			 columns.
(D) "Digester system"
			 means any continuous or batch process in which white liquor is used to cook the
			 wood pulp, and includes any associated flash tanks, blow tanks, chip steamers
			 and condensors.
(E) "Kraft pulp
			 mill" means a wood pulping mill which uses an alkaline sulfide solution
			 containing sodium hydroxide and sodium sulfide (white liquor) in the wood
			 digesting process.
(F) "Lime kiln"
			 means a unit used to calcine calcium carbonate, commonly known as "lime mud,"
			 into calcium oxide, commonly known as "quicklime."
(G) "Multiple-effect evaporator system" means
			 the multiple-effect evaporator including any associated condensors and hotwells
			 used to concentrate the black liquor.
(H) "Recovery furnace" means a straight Kraft
			 recovery furnace including any direct contact evaporators, designed to recover
			 chemicals necessary for the pulp cooking process through the combustion of
			 black liquor containing less than seven per cent liquor such as neutral sulfite
			 semichemical from a soda-based semichemical pulping process on a quarterly
			 basis.
(I) "Smelt dissolving tank"
			 means a vessel used for dissolving smelt from a recovery furnace.
(J) "Soda-based semichemical pulping
			 operation" means any operation in which pulp is produced from wood by cooking
			 or digesting wood chips in a soda-based semichemical such as neutral sulfite
			 semichemical.
(K) "Total reduced
			 sulfur" means the sum of the sulfur compounds hydrogen sulfide, methyl
			 mercaptan, dimethyl sulfide and dimethyl disulfide, that are released during
			 the Kraft pulping operation and measured by methods specified in rule
			 3745-73-04
			 of the Administrative Code.
(L)
			 Reference to materials. This chapter includes references to certain matter or
			 materials. The text of the referenced material is not included in the rules
			 contained in this chapter. Information on the availability of the referenced
			 materials as well as the date of, or the particular edition or version of the
			 material is included in this rule. For materials subject to change, only the
			 specific versions specified in this rule are referenced. Material is referenced
			 as it exists on the effective date of this rule. Except for subsequent annual
			 publication of existing (unmodified) Code of Federal Regulation compilations,
			 any amendment or revision to a referenced document is not applicable unless and
			 until this rule has been amended to specify the new dates.
(1) Availability. The referenced materials
			 are available as follows:
Code of Federal Regulations (CFR). Information and copies may
				be obtained by writing to: "Superintendent of Documents, Attn: New Orders, P.
				O. Box 371954, Pittsburgh, PA 15250-7954." The full text of the CFR is also
				available in electronic format at
www.ecfr.gov
. The CFR compilations are also
				available for inspection and use at most public libraries and "The State
				Library of Ohio."
(2)
			 Referenced materials:
40 CFR Part 60, Appendix A consisting of appendicies A-1 to
				A-8; "Test Methods 1 through 30B;" as published in the July 1,
				
										2020
				Code of Federal Regulations.