Method for preparing solid fuel by mixing sludge and biomass

A technology of solid fuel and biomass, which is applied in the field of mixing and molding solid fuel after sludge and biomass are dried first, can solve the problems of easy cracking of molded fuel, insufficient strength of solid fuel, and uneven fuel properties, etc., and achieve reduction Effects of secondary pollution, uniform properties, and reduced treatment costs

Inactive Publication Date: 2013-04-24
东莞市图美环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods have their own disadvantages: adding coal powder is not conducive to energy conservation and environmental protection; to produce solid fuel after molding at a relatively high moisture content, it is generally necessary to add a binder, which is costly, and the molding fuel is dried during the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of method that sludge of the present invention is mixed with palm shell to prepare solid fuel comprises the following steps:

[0025] (1) Pretreatment: Add quicklime accounting for 5% of the dry weight of the sludge to the sludge, dehydrate and dry the resulting mixture to a moisture content of 13%, and crush it through a 0.45mm standard sieve to obtain sludge drying raw materials; palm The shell is dehydrated and dried to a moisture content of 13%, and crushed through a 0.45mm standard sieve to form dried palm shell raw materials;

[0026] (2) Mixing and molding: Mix the above-mentioned sludge drying raw materials and palm shell drying raw materials according to the mass ratio of 2:1 and fully stir to obtain a raw material mixture; the raw material mixture is molded at a molding pressure of 63.2MPa and a molding temperature of 90 Extruded under the condition of ℃, the mixed solid fuel (1# mixed solid fuel) can be obtained.

[0027] The calorific value of the so...

Embodiment 2

[0029] A method for preparing solid fuel by mixing sludge and palm whisker of the present invention may further comprise the steps:

[0030](1) Pretreatment: Add quicklime accounting for 5% of the dry weight of the sludge to the sludge, dehydrate and dry the resulting mixture to a moisture content of 15%, and crush it through a 0.45mm standard sieve to obtain sludge drying raw materials; palm The whiskers are dehydrated and dried to a moisture content of 15%, crushed through a 0.45mm standard sieve to form dried palm whiskers raw materials;

[0031] (2) Mixing and molding: Mix the above-mentioned sludge drying raw materials and palm whisker drying raw materials according to the mass ratio of 1:1 and fully stir to obtain a raw material mixture; the raw material mixture is molded at a molding pressure of 63.2MPa and a molding temperature of 130 Extruded under the condition of ℃, the mixed solid fuel (2# mixed solid fuel) can be obtained. The calorific value and Meyer strength t...

Embodiment 3

[0033] A method for preparing solid fuel by mixing sludge and fungus residue of the present invention, comprising the following steps:

[0034] (1) Pretreatment: Add quicklime accounting for 5% of the dry weight of the sludge to the sludge, dehydrate and dry the resulting mixture to a moisture content of 15%, and crush it through a 0.45mm standard sieve to obtain sludge drying raw materials; The slag is dehydrated and dried to a moisture content of 15%, and crushed through a 0.45mm standard sieve to form a dried fungal slag raw material;

[0035] (2) Mixing and molding: Mix the above-mentioned sludge drying raw materials and fungus residue drying raw materials according to the mass ratio of 1:2 and fully stir to obtain a raw material mixture; the raw material mixture is molded at a molding pressure of 63.2MPa and a molding temperature of 110 Extruded under the condition of ℃, the mixed solid fuel (3# mixed solid fuel) can be obtained. The calorific value and Meyer strength te...

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PUM

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Abstract

The invention discloses a method for preparing a solid fuel by mixing sludge and biomass. The method comprises the following steps: (1) pretreating: adding additive accounting for 1-5% of the dry basis quantity of the sludge to the sludge; dewatering and drying the obtained mixture until the water content is 10-25%; crushing and sieving to form dried sludge raw material; dewatering and drying the biomass until the water content is 10-25%; crushing and sieving the biomass so as to obtain dried biomass raw material; (2) mixing and forming: mixing and stirring the dried sludge raw material and the dried biomass raw material to obtain a raw material mixture, wherein the mass fraction of the dried sludge raw material is 30-70%; the mass fraction of the dried biomass raw material is 70-30%; and extruding and forming the raw material mixture so as to obtain the solid fuel. The method disclosed by the invention is low in cost, energy-saving and environment-friendly, realizes the recycle of the solid waste and the biomass and effectively solves the treatment problem of the solid waste and the biomass.

Description

technical field [0001] The invention belongs to the field of solid waste reuse, and in particular relates to a method for preparing solid fuel by mixing and forming sludge and biomass after drying. Background technique [0002] Since the beginning of the 21st century, energy and environmental issues have always been the central issues that all countries in the world are facing and are related to the sustainable development of the national economy. In order to alleviate and gradually solve this problem, countries all over the world are actively developing renewable new energy. [0003] With the rapid development of the global economy and people's increasing concern for the environment, the amount of sewage treatment has increased rapidly, and the corresponding sludge production has also increased rapidly. Sludge refers to the solid, semi-solid and liquid waste produced by sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial ce...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10L5/46
CPCY02E50/10Y02E50/30
Inventor 袁兴中蒋龙波郭晶晶肖智华李辉梁婕柴琦黄华军
Owner 东莞市图美环保科技有限公司
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