Method and device for preparing formed sludge fuel

A sludge and fuel technology, which is applied in the field of preparing sludge briquette fuel and devices, can solve the problems of not meeting the conditions for industrialization promotion, hindering the promotion and application of fuel technology, reducing the calorific value of sludge, etc., and achieving an increase in the addition ratio and an addition ratio Low, the effect of improving the dehydration performance

Inactive Publication Date: 2011-10-12
JIANGSU XINFA ENVIRONMENTAL PROTECTION TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All sludge fuelization technologies add stabilizers such as fly ash, which not only increases the volume of fuel, but also reduces the calorific value of sludge, which hinders the promotion and application of fuel technology, and does not meet the conditions for industrialization.

Method used

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  • Method and device for preparing formed sludge fuel
  • Method and device for preparing formed sludge fuel

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A method for preparing solid fuel derived from sludge, the steps are as follows:

[0030] Step 1 Add water to the dehydrated wet sludge with a moisture content of 70%~85% and stir evenly to prepare a slurry with a moisture content of about 90%. Add sludge to the tempering kettle with a mass ratio of 20:(1~8) the pre-crushed stalks, and stir the mixture evenly through a mixer;

[0031] Step 2: Add chemical conditioner to the conditioning tank according to 1-6% of the sludge mass, and continue to stir for 2-10 minutes to fully react the chemical conditioner and the mixture;

[0032] Step 3 Send the chemically conditioned mixture into the fuel dehydrator for dehydration;

[0033] Step 4: Granulate the dehydrated fuel mixture and dry it naturally for 24 hours to obtain a sludge-derived solid fuel with a water content of about 35%.

Embodiment 2

[0035] A device for implementing the above-mentioned method for preparing sludge-derived solid fuel, including a straw crusher 1 , a feeder 2 , a tempering kettle 3 , an agitator 4 , a fuel dehydrator 5 , and a fuel molding machine 6 . The agitator is located at the top of the conditioning kettle, the stirring shaft coincides with the axis of the conditioning kettle and goes deep into the conditioning kettle, the outlet of the straw crusher and the inlet of the feeder, the outlet of the feeder and the inlet of the conditioning kettle, the outlet of the conditioning kettle and the fuel The inlet of the dehydrator, the outlet of the fuel dehydrator are connected with the inlet of the fuel forming machine.

[0036] Below with reference to accompanying drawing, the present invention is described in more detail:

[0037] refer to figure 1 , a device for preparing synthetic fuel from sludge, comprising a straw crusher 1, a feeder 2, a tempering kettle 3, a stirrer 4, a fuel dehydra...

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Abstract

The invention discloses a process method for preparing a derived solid fuel by using sludge, and the method comprises the following steps: feeding dehydrated wet sludge with the moisture content of 70-85% and biomass at a weight ratio of 50:(1-10) into a tempering kettle, introducing less water, evenly stirring, adding a tempering agent the mass of which is 0-20% of that of dried solid sludge, stirring for 2-10 minutes continuously, removing most of water by a dehydrator, forming, and naturally drying for 24 hours, thus obtaining the derived sludge solid fuel. The invention also discloses a device for preparing a formed sludge fuel. The device comprises a straw crusher, a feeder, the tempering kettle, the stirrer, the fuel hydrator and a fuel forming machine, wherein the stirrer is positioned at the top of the tempering kettle, a stirring shaft is coincident with the axis of the tempering kettle and inserted into the tempering kettle, the outlet of the straw crusher is connected with the inlet of the feeder, the outlet of the feeder is connected with the inlet of the tempering kettle, the outlet of the tempering kettle is connected with the inlet of the fuel dehydrator, and the outlet of the fuel dehydrator is connected with the inlet of the fuel forming machine.

Description

technical field [0001] The invention belongs to the field of solid waste treatment and resource utilization, and relates to a process method for preparing derived solid fuel from sludge, in particular to a method that directly uses biomass and wet sludge with a water content of about 80% as raw materials, and utilizes chemical conditioning Quality technology and fiberization characteristics of straw, improving the dehydration performance of the mixture, and the method and device for making the dehydrated material into a solid derived fuel. Background technique [0002] 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 sludge production has also expanded rapidly. Sludge is an extremely complex heterogeneous body composed of organic debris, bacterial cells, colloids, various microorganisms, and organic and inorganic particles. The unstable organic matter in it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/46C02F11/00C02F11/14
CPCY02E50/10Y02E50/30
Inventor 葛仕福赵培涛
Owner JIANGSU XINFA ENVIRONMENTAL PROTECTION TECHCO
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