Sludge deep dehydration coupled biomass pyrolysis system and method thereof

A biomass pyrolysis and deep dehydration technology, applied in the field of environmental protection, can solve the problems of restricting promotion, high investment and operation costs, secondary pollution of flue gas, etc., to reduce investment and operation costs, improve energy utilization efficiency, and achieve stable operation. reliable results

Pending Publication Date: 2020-11-20
SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, although sludge incineration has a significant reduction effect, its investment and operation costs are high, and there are problems such as secondary pollution of flue gas, which restricts its promotion to a certain extent.

Method used

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  • Sludge deep dehydration coupled biomass pyrolysis system and method thereof

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Embodiment 1

[0065] This embodiment provides a method for deep sludge dehydration coupled with biomass pyrolysis.

[0066] A method for deep sludge dehydration coupled with biomass pyrolysis, comprising the following steps:

[0067] see figure 1 As shown, the sludge enters the conditioning device, and the cell wall in the sludge is broken and the suspended matter is flocculated through conditioning by adding medicine, so as to improve the sludge dehydration efficiency.

[0068] The conditioned sludge enters the filter press dewatering device 200 to realize press filter dehydration to form press filter sludge, the moisture content of the filter cake after the sludge press filter dewatering is reduced to 55%, and the filter press sludge enters the sludge drying and dewatering device 300 , the filtrate from the filter press dehydration device 200 enters the sewage treatment device 700 and is discharged after reaching the standard.

[0069] The sludge dehydration and drying device performs d...

Embodiment 2

[0074] This embodiment provides a method for deep sludge dehydration coupled with biomass pyrolysis.

[0075] A method for deep sludge dehydration coupled with biomass pyrolysis, comprising the following steps:

[0076] see figure 1 As shown, the sludge enters the conditioning device, and the cell wall in the sludge is broken and the suspended matter is flocculated through conditioning by adding medicine, so as to improve the sludge dehydration efficiency.

[0077] The conditioned sludge enters the filter press dewatering device 200 to realize press filter dehydration to form press filter sludge. Preferably, the moisture content of the filter cake after sludge press filter dewatering is reduced to 60%, and the filter press sludge enters the sludge drying The filtrate of the dehydration device 300 and the filter press dehydration device 200 enters the sewage treatment device 700 and is discharged after reaching the standard.

[0078] The sludge dehydration and drying device p...

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Abstract

The invention discloses a sludge deep dehydration coupled biomass pyrolysis system and a method thereof. The sludge deep dehydration coupled biomass pyrolysis system comprises a sludge conditioning device, a filter pressing dehydration device, a sludge drying dehydration device, a pyrolysis device, a pyrolysis gas combustion device and a flue gas purification device, wherein the sludge conditioning device, the filter pressing dehydration device, the sludge drying dehydration device, the pyrolysis device and the pyrolysis gas combustion device are sequentially communicated, and the flue gas purification device is connected with the sludge drying dehydration device. The sludge deep dehydration coupled biomass pyrolysis system has the advantages of sludge dehydration reduction, full utilization of a heat value, few technological processes and low operation cost, can realize recycling of pyrolysis productivity, meets the national requirements of sludge reduction and harmless treatment, andachieves the goal of resource utilization.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a sludge deep dehydration coupled biomass pyrolysis system and a method thereof. Background technique [0002] In recent years, with the continuous advancement of my country's ecological civilization construction, the sewage treatment of provinces, cities and counties at all levels has achieved remarkable results, and sewage treatment plants have continued to increase and expand. With the continuous increase of sewage treatment facilities, there has been a substantial increase in sludge production. At present, only the national sewage treatment plants produce 200 million tons of raw sludge (with a water content of about 95%) annually, and there are still more than 50 million tons of sludge after the initial concentration of sewage treatment plants to about 80% water content, which will exceed 60 million tons this year. How to effectively dispose of sludge in an economical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/10C02F11/122C02F11/13C02F11/14F23G7/06
CPCC02F11/10C02F11/122C02F11/14C02F11/13F23G7/06F23G2209/14Y02W10/40
Inventor 庄毅璇杨小毛王先成骆灵喜林巍李建
Owner SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD
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