System and method for rotary pyrolysis treatment of domestic sludge

A domestic sludge and rotary technology, applied in pyrolysis treatment of sludge, chemical instruments and methods, special forms of dry distillation, etc., can solve problems such as pipeline blockage, reduce heat loss, reduce energy consumption, and ensure stability Effect

Inactive Publication Date: 2017-05-24
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a system and method for rotary pyrolysis treatment of domestic sludge, so as to solve the problem that the sludge pyrolysis system is prone to blockage of pipes, etc., and at the same time design a higher pyrolysis efficiency and direct recycling of sludge Utilization and low energy consumption sludge treatment system

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  • System and method for rotary pyrolysis treatment of domestic sludge
  • System and method for rotary pyrolysis treatment of domestic sludge
  • System and method for rotary pyrolysis treatment of domestic sludge

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Embodiment approach

[0048] In the second aspect of the present invention, the present invention proposes a method for preparing activated carbon from domestic sludge. According to an embodiment of the present invention, the method is carried out using a system for preparing activated carbon. According to an embodiment of the present invention, the method includes: (1) sending the domestic sludge to the pretreatment device for pretreatment to obtain pyrolysis raw materials; (2) sending the pretreated domestic sludge to the thermal The pyrolysis furnace is subjected to pyrolysis treatment to obtain pyrolysis charcoal and pyrolysis oil gas; (3) the pyrolysis oil gas is sent to the cooling and purification unit to obtain pyrolysis liquid and pyrolysis gas; (4) the pyrolysis gas is The decomposed gas is sent to the burner for combustion to provide heat for the pyrolysis furnace, and the combustion produces hot flue gas for the fluidized bed reaction; (5) send the pyrolyzed liquid to the oil-water sepa...

Embodiment

[0070] Using domestic sludge as raw material, the system of preparing activated carbon from domestic sludge is used to prepare activated carbon. The process of preparing activated carbon system from domestic sludge is as follows: figure 2 As shown, the method for preparing activated carbon from domestic sludge is as follows:

[0071] (1) Drying 20 tons of domestic sludge with a moisture content of about 86% to obtain materials with a moisture content lower than 40%;

[0072] (2) Send the dried domestic sludge into the pyrolysis furnace for pyrolysis, and the material is uniformly distributed on the distribution board, and the thickness of the material layer is 120mm. The pyrolysis furnace is equipped with heating radiant tubes, pyrolyzed to obtain pyrolytic charcoal (temperature is about 580°C) and pyrolytic oil gas (temperature is about 650°C), and the produced pyrolytic charcoal is sent to the fluidized bed;

[0073] (3) The oil-gas mixture produced by pyrolysis is sent to...

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Abstract

The invention relates to a system and method for rotary pyrolysis treatment of domestic sludge. The system comprises a sludge pyrolyzing furnace and a fluidized bed in sequential arrangement, wherein a reaction chamber, a tray and a burner are arranged in the sludge pyrolyzing furnace; the tray is rotatably arranged at the bottom of the reaction chamber; the burner is arranged above the tray in the reaction chamber; a pyrolysis raw material inlet and a pyrolysis oil gas outlet are formed in the top of the sludge pyrolyzing furnace; a pyrolysis carbon outlet is formed in the bottom of the sludge pyrolyzing furnace; and the fluidized bed is used for receiving and activating pyrolyzed carbon. The technical scheme of the invention avoids the problems of the original fluidized bed pyrolysis technology that lots of dust is generated by insufficient pyrolysis of pyrolysis raw materials, some solids being fluidized enter a pipeline and a dust removal system along with the pyrolysis gas and cause blocking and heavy dust and further lead to fault pause and maintenance; and in the invention, a relatively good pyrolysis effect and direct resource utilization can be realized while the cost is low.

Description

technical field [0001] The present invention generally relates to a sludge pyrolysis technology, in particular to a rotary pyrolysis system and method for treating domestic sludge. Background technique [0002] Thermochemical conversion (such as carbonization, pyrolysis, gasification) of domestic sludge and other viscous carbonaceous materials (such as oilfield oily sludge, mineral dust sludge, industrial sludge, hazardous waste liquid) can produce solid, liquid and gaseous states These products are made into recyclable, easy-to-use, easy-to-transport and easy-to-storage energy forms according to needs, which can be used for thermal power generation or as raw materials for chemical and other industries. Depending on the raw material and the purpose of heat treatment, carbonization, gasification, pyrolysis, liquefaction or other related thermochemical reactions and processes can be used. However, if domestic sludge is used as raw material, oil, gas and solid carbon can be pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C01B32/324C01B32/39C02F11/10C10G1/00C10B53/00
CPCY02W10/40C02F11/10C10B53/00C10G1/002
Inventor 吴小飞巴玉鑫肖磊王惠惠房凯牛明杰宋敏洁吴道洪
Owner SHENWU TECH GRP CO LTD
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