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Two-stage drying and pyrolysis sludge disposal, heat energy utilization method and device system

A technology for sludge disposal and sludge, which is applied in pyrolysis sludge treatment, dehydration/drying/concentration sludge treatment, by-product vaporization, etc., can solve the problems of increasing sales costs and achieve increased calorific value and huge social benefits , The effect of solving the problem of sludge treatment

Active Publication Date: 2016-03-09
浙江瑞拓展泰再生能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The final product obtained by this invention is tar, and the purification and combustion of pyrolysis gas is not carried out, which increases the sales cost

Method used

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  • Two-stage drying and pyrolysis sludge disposal, heat energy utilization method and device system

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Effect test

Embodiment 1）

[0030] See figure 1

[0031] The two-stage drying and pyrolysis sludge disposal and heat energy utilization device system are arranged in sequence, including filter press 1, crusher 2, low-temperature and high-speed air-dried sludge drying room 3, and pyrolysis reactor 6, which is a vertical pyrolysis reactor , a combustion chamber 8, a steam generator 9, a waste heat utilization device 10, wherein the discharge port of the low-temperature high-speed air-dried sludge drying room 3 is connected with the feed port of the pyrolysis reactor 6, and the gas outlet on the upper part of the pyrolysis reactor 6 is connected to the The air inlets of the combustion chamber 8 are connected, and the front end of the combustion chamber 8 is provided with a burner 7 . The filter press 1 is a plate-and-frame diaphragm filter press, and a directional air circulation unit is installed on the top of the low-temperature and high-speed air-dried sludge drying room 3 to provide high-speed circulat...

Embodiment 2）

[0039] See figure 1

[0040] The two-stage drying and pyrolysis sludge disposal and heat energy utilization device system are arranged in sequence including filter press 1, crusher 2, low-temperature and high-speed air-dried sludge drying room 3, vertical pyrolysis reactor 6, combustion chamber 8, A steam generator 9 and a waste heat utilization device 10, wherein the outlet of the low-temperature high-speed air-dried sludge drying room 3 is connected to the inlet of the pyrolysis reactor 6, and the gas outlet on the upper part of the pyrolysis reactor 6 is connected to the inlet of the combustion chamber 8. The gas ports are connected, and the front end of the combustion chamber 8 is provided with a burner 7 . The filter press 1 is a plate-and-frame diaphragm filter press, and a directional air circulation unit is installed on the top of the low-temperature and high-speed air-dried sludge drying room 3 to provide high-speed circulating air. There are three layers of laminate...

Embodiment 3）

[0048] See figure 1

[0049] The two-stage drying and pyrolysis sludge disposal and heat energy utilization device system are arranged in sequence including filter press 1, crusher 2, low-temperature and high-speed air-dried sludge drying room 3, vertical pyrolysis reactor 6, combustion chamber 8, A steam generator 9 and a waste heat utilization device 10, wherein the outlet of the low-temperature high-speed air-dried sludge drying room 3 is connected to the inlet of the pyrolysis reactor 6, and the gas outlet on the upper part of the pyrolysis reactor 6 is connected to the inlet of the combustion chamber 8. The gas ports are connected, and the front end of the combustion chamber 8 is provided with a burner 7 . The filter press 1 is a plate-and-frame diaphragm filter press, and a directional air circulation unit is installed on the top of the low-temperature and high-speed air-dried sludge drying room 3 to provide high-speed circulating air. There are three layers of laminate...

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Abstract

The invention relates to a method and a device for overall harmless disposal of sludge, particularly to a two-stage drying and pyrolysis method for sludge disposal and heat energy utilization and a device system thereof. The method provided by the invention includes the steps of: mechanical filter pressing and pre-drying of sludge; low temperature and high speed air drying for secondary drying of the sludge; pyrolysis of the sludge; and heat energy utilization. According to the invention, a biomass material is also mixed into the sludge, the calorific value of the sludge and the solid content of organic matters are increased, and effective industrial pyrolysis is realized. The waste biomass material is mixed with the sludge, and energies of the two are effectively converted, the problem of overall harmless disposal of sewage plant sludge is solved, massive environmental pollution is avoided, and at the same time, huge social benefits are created.

Description

technical field [0001] The invention relates to a method and a device for overall harmless disposal of sludge, in particular to a method and a device system for two-stage drying and pyrolysis sludge disposal and heat energy utilization. Background technique [0002] Since entering the "Twelfth Five-Year Plan", my country's sewage treatment industry has developed rapidly, and the sewage treatment capacity and treatment rate have increased rapidly, which has brought about a rapid increase in sludge production. According to the data of the Ministry of Housing and Urban-Rural Development, by the end of 2011, the national urban sewage treatment volume reached 32 billion cubic meters, and the production of wet sludge (with a moisture content of 80%) exceeded 30 million tons. According to the survey results, 80% of the sludge produced by my country's sewage treatment plants has not been properly treated. The random accumulation of sludge and the pollution and re-pollution problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/10C02F11/12
CPCY02W10/40
Inventor 崔茂佩王兢刘凯
Owner 浙江瑞拓展泰再生能源有限公司
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