T/CPCIF 0133-2021 Sulfur-containing waste treatment with gypsum-based sulfuric acid production facilities guidelines for synergistic treatment techniques

Scope

Scope: This document specifies the technical requirements for the collaborative treatment of sulfur-containing waste in gypsum-based sulfuric acid production facilities, including general requirements, characteristics of sulfur-containing waste, facility requirements, operational technology requirements, control requirements for pollutant emissions, monitoring requirements, and operational management requirements, etc. This document applies to the collaborative treatment of waste sulfuric acid, sulfur-containing distillation residues, acid tar, thiophene tar, sulfur-containing tar, desulfurization wastewater, sulfur foam, and sulfur paste in gypsum-based sulfuric acid production and cement co-production facilities. Main technical content: 5.1 Characteristics of sulfur-containing waste 5.1.1 Requirements for receiving sulfur-containing waste at the plant: - The sulfur content shall be ≥5% (calculated as S); - The sulfuric acid concentration shall be ≥50%. 5.2.1 Requirements for entering the kiln: - The composition of sulfur-containing waste shall be stable; - When in liquid form, it shall have good flowability and be easy to atomize. 5.2.2 Requirements for materials entering the kiln (including conventional raw materials, fuels, and solid waste): - The content of P2O5 shall be ≤1.5%; - The content of Cl shall be ≤5%; - The content of F shall be ≤5%; - The maximum allowable addition of heavy metals shall not exceed the limits listed in Table 1, where the maximum allowable addition of heavy metals in mg/kg-cem also includes heavy metals introduced by admixtures during cement grinding. Table 1: Limits for the maximum allowable addition of heavy metals Heavy metal Unit Maximum allowable addition Mercury (Hg) mg/kg-cli 0.23 Thallium + cadmium + lead + 15 × arsenic (Tl + Cd + Pb + 15 As) 230 Be + Cr + 10 Sn + 50 Sb + Cu + Mn + Ni + V 1 150 Total chromium (Cr) mg/kg-cem 320 a Hexavalent chromium (Cr+6) 10 a Zinc (Zn) 37,760 Manganese (Mn) 3

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