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Technique for preparing derived fuel from municipal sludge and biomass

A technology of derived fuel and biomass raw material, which is applied in the field of municipal sludge and biomass treatment, can solve the problems of restricting industrialization development, long process flow, complicated equipment, etc., to prolong the service life, shorten the process flow, and reduce the difficulty Effect

Active Publication Date: 2013-12-11
桂林聚能环保科技有限责任公司
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  • Abstract
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Problems solved by technology

[0005] In addition, the existing technology has long process flow, complicated equipment, high energy consumption and low productivity, which restrict its industrialization development

Method used

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  • Technique for preparing derived fuel from municipal sludge and biomass

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Embodiment Construction

[0037] A process for preparing derived fuel from high-humidity municipal sludge and biomass, comprising the following steps:

[0038] (1) Biomass coarse crushing process: the biomass raw material is coarsely crushed with a crusher.

[0039] The biomass raw materials are mainly fast-growing bamboo, plant stalks, branches, roots and the like.

[0040] The coarse crusher is the SSI-M50E crusher from SSI Company of the United States. The rotating speed is 26r / min; the thickness of the crushing tool is 50mm. The crushing capacity is 15T / H.

[0041] (2) Biomass fine crushing process: use a crusher to send the biomass raw materials from the previous process for fine crushing.

[0042] After crushing in this process, 90% of the biomass raw materials are below 15mm×10mm in size.

[0043] The fine crusher is the SSI-M50E crusher from SSI Company of the United States. The rotating speed is 26r / min; the thickness of the crushing tool is 15mm. The crushing capacity is 10T / H.

[0044...

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Abstract

The invention discloses a technique for preparing derived fuel from municipal sludge and biomass, which is an energy-saving and efficient industrialized preparation technique. The technique comprises the following steps: previously baking or dehydrating the main component municipal sludge, proportionally adding biomass and additives, carrying out crushing, stirring and drying twice on the mixture by a fine crushing-stirring-molding integrated machine to sufficiently pulverize the biomass, and thoroughly mixing the sludge with the biomass and additives to perform modification treatment; and carrying out extrusion molding on the sludge by a molding machine by using the viscosity of the sludge, and finally delivering to a low-temperature drier to carry out baking. The invention achieves the goals of energy saving and zero discharge in the production process.

Description

technical field [0001] The invention relates to a treatment method for urban sludge and biomass, in particular to a process for preparing derived fuels using urban sludge and biomass as raw materials. Background technique [0002] There have been many studies at home and abroad on the process of preparing derived fuels from municipal sludge and biomass, but few have industrialized the treatment process. The reason is mainly that the following recognized technical problems cannot be overcome: [0003] Problem 1: Sludge dehydration is difficult. Nowadays, the filter press method or screw stacker are generally used for dehydration, and the moisture content of the sludge delivered from the factory is generally above 80%. There are two main ways to use mechanical equipment to reduce its water content: one is to increase the amount of flocculant input, resulting in an increase in processing costs; the other is to increase the working pressure of the filter press and prolong the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C10L5/46
CPCY02E50/10Y02E50/30
Inventor 吕勇黄长秀郭起桓吴桥生
Owner 桂林聚能环保科技有限责任公司
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