Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Integrated process for synergistically preparing cementing material through flue gas desulfurization and denitrification
The invention discloses an integrated process for synergistically preparing a cementing material by flue gas desulfurization and denitrification, which comprises the following steps: (1) contacting flue gas to be treated with gas containing chlorine dioxide to oxidize nitric oxide in the flue gas to obtain oxidized flue gas, and contacting the oxidized flue gas with absorption slurry containing a calcium-based absorbent and sodium hydrogen sulfite, and obtaining desulfurization and denitrification slurry; wherein the calcium-based absorbent contains calcium oxide and/or calcium hydroxide; (2) dehydrating, drying and grinding the desulfurization and denitrification slurry to obtain a ground solid product; and (3) uniformly mixing the ground solid product, fly ash, mineral powder and an alkali activator to obtain the cementing material. The denitration efficiency is higher, and the obtained cementing material is excellent in performance.
本发明公开了一种烟气脱硫脱硝协同制备胶凝材料的一体化工艺，包括如下步骤：(1)将待处理烟气与含二氧化氯的气体接触以氧化烟气中的一氧化氮得到氧化烟气，再将氧化烟气与含有钙基吸收剂和亚硫酸氢钠的吸收浆液进行接触，获得脱硫脱硝浆液；其中，所述钙基吸收剂含有氧化钙和/或氢氧化钙；(2)将脱硫脱硝浆液经过脱水、干燥和研磨处理得到研磨后的固体产物；(3)将研磨后的固体产物、粉煤灰、矿粉和碱激发剂混合均匀，得到所述胶凝材料。本发明的脱硝效率更高，获得的胶凝材料性能优异。
Integrated process for synergistically preparing cementing material through flue gas desulfurization and denitrification
The invention discloses an integrated process for synergistically preparing a cementing material by flue gas desulfurization and denitrification, which comprises the following steps: (1) contacting flue gas to be treated with gas containing chlorine dioxide to oxidize nitric oxide in the flue gas to obtain oxidized flue gas, and contacting the oxidized flue gas with absorption slurry containing a calcium-based absorbent and sodium hydrogen sulfite, and obtaining desulfurization and denitrification slurry; wherein the calcium-based absorbent contains calcium oxide and/or calcium hydroxide; (2) dehydrating, drying and grinding the desulfurization and denitrification slurry to obtain a ground solid product; and (3) uniformly mixing the ground solid product, fly ash, mineral powder and an alkali activator to obtain the cementing material. The denitration efficiency is higher, and the obtained cementing material is excellent in performance.
本发明公开了一种烟气脱硫脱硝协同制备胶凝材料的一体化工艺，包括如下步骤：(1)将待处理烟气与含二氧化氯的气体接触以氧化烟气中的一氧化氮得到氧化烟气，再将氧化烟气与含有钙基吸收剂和亚硫酸氢钠的吸收浆液进行接触，获得脱硫脱硝浆液；其中，所述钙基吸收剂含有氧化钙和/或氢氧化钙；(2)将脱硫脱硝浆液经过脱水、干燥和研磨处理得到研磨后的固体产物；(3)将研磨后的固体产物、粉煤灰、矿粉和碱激发剂混合均匀，得到所述胶凝材料。本发明的脱硝效率更高，获得的胶凝材料性能优异。
Integrated process for synergistically preparing cementing material through flue gas desulfurization and denitrification
烟气脱硫脱硝协同制备胶凝材料的一体化工艺
TONG SHANGHUI (Autor:in)
16.07.2021
Patent
Elektronische Ressource
Chinesisch
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