System and method for preparing high value-added products by catalytic pyrolysis of municipal sludge

A catalytic pyrolysis, high value-added technology, applied in the field of solid waste resource treatment, can solve the problems of poor product quality, limited application scope and fields, etc.

Inactive Publication Date: 2020-02-07
湖南科谷环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of sludge pyrolysis products is not very good, which limits the scope and field of its application. How to improve the quality of pyrolysis three-phase products has become the key to large-scale use of pyrolysis three-phase products and the widespread promotion of pyrolysis technology.

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  • System and method for preparing high value-added products by catalytic pyrolysis of municipal sludge
  • System and method for preparing high value-added products by catalytic pyrolysis of municipal sludge

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Embodiment 1

[0031] combine figure 2 , a system for producing high value-added products by catalytic pyrolysis of municipal sludge is described in detail. A system for producing high value-added products by catalytic pyrolysis of municipal sludge includes:

[0032] Pyrolysis furnace 3, a quartz tube 4 is provided in the pyrolysis furnace 3; a nitrogen inlet is provided at the first end of the quartz tube 4, and a pyrolysis product outlet is provided at the second end; a porcelain boat is placed in the quartz tube 4 5; There is a control panel 6 on the pyrolysis furnace.

[0033] A condensing device 14, the condensing device 14 has a pyrolysis product inlet, a pyrolysis gas outlet, and a pyrolysis oil outlet; the pyrolysis product inlet is connected to the second end of the quartz tube; the condensing device 14 is a partition water cooling device, The condensed water inlet pipe 7 is provided below the condensing device 14, and the condensed water outlet pipe 13 is provided above; the cond...

Embodiment 2

[0039] combine figure 1 with figure 2 , a method for producing high value-added products by catalytic pyrolysis of municipal sludge is described in detail, the method includes the following steps:

[0040] S1: Mix the sludge raw material with a water content of 50% and the catalyst evenly, place it in the quartz tube of the pyrolysis furnace, and carry out pyrolysis under the protection of nitrogen gas to obtain pyrolysis products; the pyrolysis products are gas and liquid Pyrolysis gas, pyrolysis oil, and pyrolysis carbon in a solid mixed state; the catalyst is one or more of calcium hydroxide, calcium carbonate, zinc chloride, calcium chloride, calcium oxide, zinc oxide, and superphosphate ; The mass ratio of the catalyst to the sludge raw material on a dry basis is 1:20-1:40.

[0041] S2: Pass the pyrolysis products including pyrolysis gas and pyrolysis oil into the pipeline to the condensing device, and separate the liquid product pyrolysis oil;

[0042] S3: The pyroly...

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Abstract

The invention discloses a system and method for preparing high value-added products by catalytic pyrolysis of municipal sludge. The efficient catalytic pyrolysis system of municipal sludge comprises apyrolysis furnace, a condensing apparatus, a pyrolysis oil collection tank, a tail gas purification apparatus, a pyrolysis gas collection tank, and the like. The method is as follows: uniformly mixing a sludge raw material with a moisture content of about 50% and a catalyst such as calcium hydroxide, calcium carbonate, zinc chloride, and calcium chloride, placing the mixture in the pyrolysis system to obtain the high value-added pyrolysis products. The requirements of different products can be met by using the method, the corresponding optimal process parameters are provided, a pyrolysis gascan be obtained to be used as high-quality gas for power generation and grid connection, and a pyrolysis oil can be obtained to be used as high-quality fuel oil or a high value-added chemical raw material. The method not only realizes waste reduction and harmlessness, but also realizes resource utilization and energy utilization, provides the optimal process parameters for different product requirements, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of solid waste resource treatment, and in particular relates to a system and a method for producing high value-added products by catalytic pyrolysis of municipal sludge. Background technique [0002] With the rapid advancement of urbanization in my country, people's living standards have been greatly improved, and the output of municipal sludge is increasing. According to statistics, the municipal sludge (80% moisture content) produced in my country in 2015 reached 35 million tons, and it has exceeded 40 million tons at present. Effective treatment and disposal of sludge is urgent. How to kill viruses and microorganisms in sludge, reduce the volume of sludge, and realize its "recycling and harmlessness" has become the key to solving the sludge problem. [0003] At present, the treatment and disposal of sludge in my country is mainly based on sanitary landfill, composting and incineration, and these technologies canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/10C10B53/00C10B57/00
CPCC02F11/10C10B53/00C10B57/00Y02W10/40
Inventor 周智吴贤波罗伟周强戴煜谷思敏张永丽钟圆
Owner 湖南科谷环保科技有限公司
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