Cement kiln co-treatment process for urban dried sludge

A drying sludge and co-processing technology, applied in water/sludge/sewage treatment, sludge treatment, incinerator, etc., can solve the problem that sludge cannot be sprayed into the decomposition furnace, etc., to achieve sufficient combustion and particle uniformity Good results

Pending Publication Date: 2021-03-12
蓝天众成环保工程有限公司
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Problems solved by technology

However, sludge with this moisture cannot be sprayed into the decomposition furnace, and there are no reference cases at home and abroad, so it is necessary to design a more complete cement kiln co-processing process for sludge of this nature

Method used

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  • Cement kiln co-treatment process for urban dried sludge

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Embodiment Construction

[0015] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0016] refer to figure 1 , the specific implementation mode adopts the following technical scheme: a kind of urban dry sludge cement kiln co-processing process, comprising the following steps:

[0017] 1. The sludge is transported to the unloading platform of the sludge disposal workshop with a closed sludge tanker, and the sludge truck is reversed into place. When the kiln is in normal operation, the sludge is directly unloaded to the sludge discharge bin; when the kiln is shut down for maintenance , the sludge is unloaded to the sludge discharge pit, and transported to the sludge storage by the driving grab bucket. After the kiln resumes operation, it is transported to the sludge truck silo by the driving grab bucket for processing;

[0018] 2....

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Abstract

The invention discloses a cement kiln co-treatment process for urban dried sludge, and relates to the technical field of dried sludge treatment. Sludge passes through a sludge discharging bin and a sludge traveling stock bin, passes through a plate feeder, then is conveyed to a tubular rubber belt conveyor and then is conveyed to a transfer station; the transfer station is provided with a sludge temporary storage bin; then the sludge passes through the plate feeder, is conveyed to an elevator through the tubular rubber belt conveyor, is conveyed to the kiln tail through the elevator, is crushed and then is conveyed to a small sludge bin; and after being metered by a quantitative feeder, the sludge is fed into a decomposing furnace and a pre-combustion chamber through a flow chain conveyorto be incinerated, most of toxic organic matters are thoroughly decomposed, a small amount of large-particle sintering slag falls into a rotary kiln from a kiln tail ascending flue and then is calcined into cement clinker through a rotary kiln system, so that harmless treatment of the sludge is thoroughly achieved.

Description

technical field [0001] The invention relates to the technical field of dried sludge treatment, in particular to a process for co-processing urban dried sludge with a cement kiln. Background technique [0002] Now most of the urban sewage plant sludge leaves the factory with a water content of 80%. After entering the cement plant, after short-term storage, it is sprayed into the decomposition furnace for incineration. [0003] In order to realize the reduction, stabilization, harmlessness and resource utilization of sludge, ensure the stable operation of sewage and sludge treatment equipment and facilities, prevent secondary pollution in the process of sludge treatment and disposal, maintain a good ecological environment and promote social economy and development With the coordinated development of environmental protection, many cities require sewage treatment plants to dry the sludge to a moisture content of 30-40% before leaving the factory, which facilitates subsequent cem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00F23G5/033F23G5/027F23G5/20F23G7/06C02F11/00
CPCC02F11/00F23G5/027F23G5/033F23G5/20F23G7/001F23G7/06F23G2201/30F23G2201/80F23G2202/10F23G2209/12
Inventor 泥卫东张思思张春辉钟红春李瑞强马超伟吴万辉
Owner 蓝天众成环保工程有限公司
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