A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cement kiln treatment process for municipal sludge
The invention relates to a cement kiln treatment process for municipal sludge. The cement kiln treatment process comprises the following steps that (1), the municipal sludge is stacked; (2), the municipal sludge is screened; (3), closed transmission, anti-adhesion and homogenization are carried out on the municipal sludge; (4), feeding and metering are carried out; (5), cement rotary kiln treatment is carried out, specifically, the temperature of a cement rotary kiln is controlled to be 900-1000 DEG C, the kiln speed of the cement rotary kiln is controlled to be 1.5-2.0 r/min, and it is ensured that the retention time of the sludge in the cement rotary kiln is greater than or equal to 30 minutes to form inorganic residues capable of comprehensively utilizing resources; and (6), tail gas is incinerated, specifically, the tail gas generated in the thermal desorption process in the rotary cement kiln enters a decomposing furnace to be subjected to high-temperature burning disposal, the temperature in the decomposing furnace is controlled to range from 1000 DEG C to 1200 DEG C, the temperature of an outlet of the decomposing furnace is controlled to range from 880 DEG C to 920 DEG C, and the burning retention time of the tail gas in the decomposing furnace is longer than 3 seconds. According to the cement kiln treatment process for the municipal sludge, reduction, stabilization, harmlessness and recycling treatment of the municipal sludge are realized, and meanwhile, harmful gas is prevented from escaping.
本发明涉及一种城市污泥的水泥窑处置工艺，包括如下步骤：1)城市污泥堆存；2)城市污泥筛分；3)城市污泥密闭传输、防粘黏与均化；4)进料计量；5)水泥回转窑处置：控制水泥回转窑温度在900‑1000℃，控制水泥回转窑窑速为1.5～2.0r/min，保证污泥在水泥回转窑中的停留时间≥30min形成可资源综合利用的无机残渣；6)尾气焚烧：水泥回转窑内热解析过程产生的尾气进入分解炉内进行高温焚毁处置，分解炉炉中温度控制在1000～1200℃，分解炉出口温度控制在880‑920℃之间，尾气在分解炉内的焚毁停留时间大于3秒。本发明实现了城市污泥的减量化、稳定化、无害化及资源化处置，同时防止有害气体逸散。
Cement kiln treatment process for municipal sludge
The invention relates to a cement kiln treatment process for municipal sludge. The cement kiln treatment process comprises the following steps that (1), the municipal sludge is stacked; (2), the municipal sludge is screened; (3), closed transmission, anti-adhesion and homogenization are carried out on the municipal sludge; (4), feeding and metering are carried out; (5), cement rotary kiln treatment is carried out, specifically, the temperature of a cement rotary kiln is controlled to be 900-1000 DEG C, the kiln speed of the cement rotary kiln is controlled to be 1.5-2.0 r/min, and it is ensured that the retention time of the sludge in the cement rotary kiln is greater than or equal to 30 minutes to form inorganic residues capable of comprehensively utilizing resources; and (6), tail gas is incinerated, specifically, the tail gas generated in the thermal desorption process in the rotary cement kiln enters a decomposing furnace to be subjected to high-temperature burning disposal, the temperature in the decomposing furnace is controlled to range from 1000 DEG C to 1200 DEG C, the temperature of an outlet of the decomposing furnace is controlled to range from 880 DEG C to 920 DEG C, and the burning retention time of the tail gas in the decomposing furnace is longer than 3 seconds. According to the cement kiln treatment process for the municipal sludge, reduction, stabilization, harmlessness and recycling treatment of the municipal sludge are realized, and meanwhile, harmful gas is prevented from escaping.
本发明涉及一种城市污泥的水泥窑处置工艺，包括如下步骤：1)城市污泥堆存；2)城市污泥筛分；3)城市污泥密闭传输、防粘黏与均化；4)进料计量；5)水泥回转窑处置：控制水泥回转窑温度在900‑1000℃，控制水泥回转窑窑速为1.5～2.0r/min，保证污泥在水泥回转窑中的停留时间≥30min形成可资源综合利用的无机残渣；6)尾气焚烧：水泥回转窑内热解析过程产生的尾气进入分解炉内进行高温焚毁处置，分解炉炉中温度控制在1000～1200℃，分解炉出口温度控制在880‑920℃之间，尾气在分解炉内的焚毁停留时间大于3秒。本发明实现了城市污泥的减量化、稳定化、无害化及资源化处置，同时防止有害气体逸散。
Cement kiln treatment process for municipal sludge
一种城市污泥的水泥窑处置工艺
HAN XIAOGUANG (author) / ZHAO HONGJIE (author) / GUO QINGFANG (author) / SUN CHUNFENG (author) / LIU ZHEN (author) / MENG LINGJU (author) / LI HONGSHENG (author) / LIU ZHIGANG (author) / ZHANG GUANGYI (author) / XIE YALAN (author)
2021-09-24
Patent
Electronic Resource
Chinese
Ventilation treatment system for municipal sludge workshop with cement kiln co-processing
| European Patent Office | 2020
Method for treating sludge by using cement kiln, and sludge gasifying cement kiln system
| European Patent Office | 2015
Method for treating sludge by using cement kiln, and cement kiln system for treating sludge
| European Patent Office | 2015
Method for treating sludge by cement kiln and cement kiln system for treating sludge by grate cooler
| European Patent Office | 2015