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Integrated process for flue gas desulfurization and denitrification and cementing material preparation
The invention discloses an integrated process for flue gas desulfurization and denitrification and preparation of a cementing material. The process comprises the following steps: (1) reacting flue gas to be treated with hydrogen peroxide to form oxidized flue gas; (2) treating the oxidized flue gas through absorbent slurry to form clean flue gas and byproduct slurry; drying the by-product slurry to obtain a solid by-product; and (3) uniformly mixing raw materials containing the solid by-product, industrial solid waste and an alkali activator to obtain a cementing material; wherein the reaction temperature of the flue gas to be treated and the hydrogen peroxide is 100-150 DEG C; and the absorbent slurry is calcium-based absorbent slurry containing ammonium bisulfite. According to the process, high denitration efficiency can be achieved at low temperature, and the obtained by-product is suitable for preparing a cementing material.
本发明公开了一种烟气脱硫脱硝及胶凝材料制备的一体化工艺。该工艺包括如下步骤：(1)将待处理烟气与双氧水反应，形成氧化后的烟气；(2)将氧化后的烟气经过吸收剂浆液处理，形成清洁烟气和副产物浆液；将副产物浆液干燥，得到固体副产物；(3)将包含所述的固体副产物、工业固体废物和碱激发剂的原料混合混匀，得到胶凝材料；其中，待处理烟气与双氧水反应的温度为100～150℃；所述的吸收剂浆液为包含有亚硫酸氢铵的钙基吸收剂浆液。该工艺在较低的温度下能够达到较高的脱硝效率，且得到的副产物适用于制备胶凝材料。
Integrated process for flue gas desulfurization and denitrification and cementing material preparation
The invention discloses an integrated process for flue gas desulfurization and denitrification and preparation of a cementing material. The process comprises the following steps: (1) reacting flue gas to be treated with hydrogen peroxide to form oxidized flue gas; (2) treating the oxidized flue gas through absorbent slurry to form clean flue gas and byproduct slurry; drying the by-product slurry to obtain a solid by-product; and (3) uniformly mixing raw materials containing the solid by-product, industrial solid waste and an alkali activator to obtain a cementing material; wherein the reaction temperature of the flue gas to be treated and the hydrogen peroxide is 100-150 DEG C; and the absorbent slurry is calcium-based absorbent slurry containing ammonium bisulfite. According to the process, high denitration efficiency can be achieved at low temperature, and the obtained by-product is suitable for preparing a cementing material.
本发明公开了一种烟气脱硫脱硝及胶凝材料制备的一体化工艺。该工艺包括如下步骤：(1)将待处理烟气与双氧水反应，形成氧化后的烟气；(2)将氧化后的烟气经过吸收剂浆液处理，形成清洁烟气和副产物浆液；将副产物浆液干燥，得到固体副产物；(3)将包含所述的固体副产物、工业固体废物和碱激发剂的原料混合混匀，得到胶凝材料；其中，待处理烟气与双氧水反应的温度为100～150℃；所述的吸收剂浆液为包含有亚硫酸氢铵的钙基吸收剂浆液。该工艺在较低的温度下能够达到较高的脱硝效率，且得到的副产物适用于制备胶凝材料。
Integrated process for flue gas desulfurization and denitrification and cementing material preparation
烟气脱硫脱硝及胶凝材料制备的一体化工艺
TONG SHANGHUI (author)
2021-07-16
Patent
Electronic Resource
Chinese
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