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A method for preparing biomass fuel from forestry solid waste and municipal sludge

A biomass fuel, solid waste technology, applied in waste fuel, biofuel, solid fuel and other directions, can solve the problems of high cost, secondary pollution, high energy consumption, and achieve the effect of saving resources, protecting the environment and simplifying the preparation process

Active Publication Date: 2021-11-02
珠海霖泽环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing biomass fuel from forestry solid waste in conjunction with municipal sludge, and solve the existing technologies of high energy consumption, high cost, and serious secondary pollution in the process of preparing biomass fuel from municipal sludge problems, while realizing efficient resource utilization of forestry solid waste and municipal sludge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Raw materials

[0025] (1) The residual sludge of a sewage treatment plant in Zhuzhou City has a moisture content of 97%.

[0026] (2) Forestry solid waste - sawdust.

[0027] (3)H 2 o 2 , its concentration is 30%.

[0028] 2. Preparation method

[0029] First, sawdust is pyrolyzed at 400°C for 2.5 hours, and the solid product obtained is the sludge dehydration conditioner. Then, crush the above-mentioned sludge dehydration conditioner until the particle size is ≤0.1mm, and the average particle size is 0.047mm, respectively take 1.8 parts of sludge conditioner, 0.18 parts of H 2 o 2， Add to 100 parts of excess sludge and stir for 30 minutes to complete sludge conditioning. Finally, filter and dewater the conditioned sludge with a plate-and-frame filter press with a diaphragm, the maximum feed pressure is 1.2Mpa, and the filter pressure is 1.6Mpa to obtain biomass fuel.

[0030] 3. Technical performance indicators of biomass fuel

[0031] Moisture M of the pr...

Embodiment 2

[0033] 1. Raw materials

[0034] (1) The residual sludge of a sewage treatment plant in Zhuzhou City has a moisture content of 97%.

[0035] (2) Forestry solid waste - traditional Chinese medicine residue.

[0036] (3)H 2 o 2， Its concentration is 30%.

[0037] 2. Preparation method

[0038] First, pyrolyze the residue of traditional Chinese medicine at 450°C for 2 hours, and the solid product obtained is the sludge dehydration conditioner. Then, crush the above-mentioned sludge dehydration conditioner until the particle size is ≤0.1mm, and the average particle size is 0.056mm, respectively take 2.1 parts of sludge conditioner, 0.18 parts of H 2 o 2 , added to 100 parts of excess sludge and stirred for 40 minutes to complete sludge conditioning. Finally, filter and dehydrate the conditioned sludge with a plate-and-frame filter press with a diaphragm, the maximum feeding pressure is 1.2Mpa, and the filtration pressure is 1.7Mpa to obtain biomass fuel.

[0039] 3. Techni...

Embodiment 3

[0042] 1. Raw material

[0043] (1) The remaining sludge of a sewage treatment plant in Xiangtan City has a water content of 98%.

[0044] (2) Forestry solid waste - traditional Chinese medicine residue.

[0045] (3)H 2 o 2， Its concentration is 27%.

[0046] 2. Preparation method

[0047] First, pyrolyze the residue of traditional Chinese medicine at 450°C for 2.5 hours, and the solid product obtained is the sludge dehydration conditioner. Then, crush the above-mentioned sludge dehydration conditioner until the particle size is ≤0.1mm, and the average particle size is 0.052mm, respectively take 1.6 parts of sludge conditioner, 0.14 parts of H 2 o 2 , added to 100 parts of excess sludge and stirred for 50 minutes to complete sludge conditioning. Finally, filter and dehydrate the tempered sludge with a plate-and-frame filter press with a diaphragm, the maximum feed pressure is 1.2Mpa, and the filter pressure is 1.8Mpa to obtain biomass fuel.

[0048] 3. Technical perfor...

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PUM

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Abstract

The invention discloses a method for preparing biomass fuel from forestry solid waste and municipal sludge. The method includes the following process: first, the sludge dehydration conditioner is prepared with forestry solid waste as the main raw material; then, the sludge dehydration conditioner and H 2 o 2 Conditioning and tempering the remaining sludge from urban sewage treatment plants; finally, mechanically dehydrating the tempered sludge with a plate and frame filter press to obtain biomass fuel. The invention uses municipal sludge to prepare biomass fuel without pre-drying municipal sludge, which not only simplifies the preparation process of municipal sludge to prepare biomass fuel, significantly reduces the production cost of biomass fuel, but also realizes forestry solid waste The high-efficiency resource utilization of municipal sludge has important economic and environmental benefits for resource conservation and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of forestry solid waste and urban domestic sewage sludge, and relates to a method for preparing biomass fuel from forestry solid waste and urban sludge. Background technique [0002] Forestry solid waste refers to the solid waste generated in the process of forestry development, processing and utilization, and is one of the main sources of raw materials for the preparation of biomass fuels. Biomass fuel has the characteristics of low sulfur, low carbon and good combustion performance, and is an environmentally friendly renewable fuel resource. [0003] With the rapid development of the world economy and the improvement of the sewage treatment rate and the deepening of the treatment degree, the output of municipal sludge is increasing day by day. If municipal sludge is not properly treated, it will cause serious secondary pollution. Therefore, the rational treatment and resource util...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/44C10L5/46C02F11/122C02F11/148
CPCC02F11/122C02F11/14C10L5/442C10L5/46Y02E50/10Y02E50/30
Inventor 戴财胜
Owner 珠海霖泽环保科技有限公司