T/BYXT 136-2024 The adsorption inhibitor for harmful gas molecules in mines

Scope

Scope: This document specifies the terminology definitions, material requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage requirements for molecular sieve adsorption inhibitors for harmful gases in mines. This document applies to molecular sieve adsorption inhibitors for harmful gases in mines, which are prepared from natural clinoptilolite mineral raw materials. They are used in the enclosed environment of coal mines for adsorption and purification of harmful gases such as hydrogen sulfide (H2S), methane (CH4), and carbon monoxide (CO). Main technical contents: The physical and chemical requirements shall comply with the requirements of Table 2. Table 2 Item Indicators Superior Grade First Grade Ammonia Adsorption Value a / (mmol/100g) ≥95 ≥90 Specific Surface Area / (m2/g) 1000-900 899-700 Particle Size Passing 280-325 mesh sieve / (%) ≥98 Passing 200-260 mesh sieve / (%) ≥-98 Harmful Gas Purification Performance Methane (CH4) Adsorption Quantity / (cm3/g) ≥16.0 ≥10.0 Carbon Monoxide (CO) Adsorption Quantity / (cm3/g) ≥90.0 ≥80.0 Hydrogen Sulfide (H2S) Adsorption Quantity / (cm3/g) ≥40.0 ≥35.0 pH Value 5.5-7.0 a The content of zeolite is linearly related to the ammonia adsorption quantity. According to industry practice, the zeolite content in the product is determined by measuring the ammonia adsorption quantity.

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