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Method for disposing urban sludge through combustion

A technology of municipal sludge and treatment method, applied in combustion method, combustion type, incinerator, etc., can solve the problems of long processing time, low combustion rate of municipal sludge, and inability to deal with municipal sludge energy consumption. , to increase the processing time without wasting energy

Inactive Publication Date: 2005-06-29
QINGDAO HAIZHONG ENVIRONMENTAL PROTECTION BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art incineration treatment of urban sludge by layer combustion method and fluidized combustion method, low burn-out rate, inability to treat urban sludge well, high energy consumption, and long processing time , to provide a new municipal sludge combustion treatment method

Method used

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  • Method for disposing urban sludge through combustion
  • Method for disposing urban sludge through combustion
  • Method for disposing urban sludge through combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: (see figure 1 , figure 2 ,image 3)

[0021] Use a pump to send the ignition fuel through the ignition channel 7.2 on the burner 4, and send it to the furnace 8 in an atomized state. Turn on the primary and secondary air switches 9 and 10 of the burner 4, so that the primary and secondary air pass through the air respectively. The wheels 2 and 3 are rotated and sent in, and the air enters the nozzle 7.1 of the burner 4 spray gun 7 through the primary and secondary air ducts 5 and 4.1, and then ignites the ignition fuel to raise the temperature of the furnace to 650°C. Ignition fuel can be easy to ignite and safe to use such as diesel or gas (the same below);

[0022] Then the municipal sludge with water content of 70-85% and the finished product coal-water slurry with water content of 30-40% are stirred and mixed into liquid fuel with a volume ratio of 2: 3.5, pressurized to 0.6Mpa with a slurry pump and sent into the burner 4 center The spray gun 7 sen...

Embodiment 2

[0027] Use a pump to send the ignition fuel through the ignition channel 7.2 on the burner 4, and send it to the furnace 8 in an atomized state. Turn on the primary and secondary air switches 9 and 10 of the burner 4, so that the primary and secondary air pass through the air respectively. The wheels 2 and 3 are rotated and sent in, and the air enters the nozzle 7.1 of the burner 4 spray gun 7 through the primary and secondary air ducts 5 and 4.1, and then ignites the ignition fuel to raise the temperature of the furnace to 700°C;

[0028] Then the municipal sludge with water content of 70-85% and the finished product coal water slurry with water content of 30-40% are stirred and mixed into liquid fuel with a volume ratio of 2:3, and then pressurized to 0.65Mpa with a slurry pump and sent to the center of the burner 4 The spray gun 7 sends the compressed air of 0.7Mpa to the spray gun 7 on the burner 4 at the same time, and injects it into the furnace 8 through the nozzle 7.1, ...

Embodiment 3

[0032] Use a pump to pump the ignition fuel through the ignition channel 7.2 on the burner 4, and send it to the furnace 8 in an atomized state. Turn on the primary and secondary air switches 9 and 10 of the burner 4 to make the primary and secondary air flow through the air respectively. The wheels 2 and 3 are rotated and sent in, and the air enters the nozzle 7.1 of the burner 4 spray gun 7 through the primary and secondary air ducts 5 and 4.1, and then ignites the ignition fuel to raise the temperature of the furnace to 700°C;

[0033] Then the city sludge with water content of 70-85% and the finished product coal water slurry with water content of 30-40% are stirred and mixed into liquid fuel with a volume ratio of 2: 3.5, pressurized to 0.6Mpa with a slurry pump and sent into the burner 4 center The spray gun 7 sends 0.6Mpa compressed air to the spray gun 7 on the burner 4 at the same time, and injects it into the furnace 8 through the nozzle 7.1, so that the liquid fuel i...

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Abstract

The invention discloses a combustion treatment method of urban sludge, which is provided for overcoming the disadvantages of the existing incineration treatment of urban sludge, such as low burn-out rate, poor treatment of urban sludge, high energy consumption, and long treatment time. The pump pressurizes the ignition fuel into the furnace and ignites it in an atomized state; stirs and mixes the municipal sludge and finished coal-water slurry in a certain proportion to form a liquid fuel, pressurizes it with a slurry pump and injects it into the furnace through the burner, and sends the compressed air to The nozzle makes the liquid fuel in an atomized suspension state and is ignited by the ignition fuel, and the urban sludge can be disposed of. Using the above-mentioned process to treat municipal sludge does not require dehydration and drying treatment, and does not waste energy; liquid fuel burns fully and quickly in the state of atomization and suspension, with less residue and can be used as building materials, so municipal sludge can be thoroughly processed Clean, recycle the heat, turn waste into treasure, and dispose of the largest amount of urban sludge with the least amount of finished coal-water slurry fuel.

Description

technical field [0001] The invention belongs to a treatment method of urban sludge, in particular to a method of sending urban sludge into a burner installed on a boiler for combustion. Background technique [0002] The rapid economic development has led to the acceleration of the urbanization process. At the same time, the amount of sewage treatment in cities is increasing year by year, and the amount of sludge produced after sewage treatment is also increasing. Taking a small and medium-sized city as an example, the amount of sludge produced by a sewage treatment plant Activated sludge reaches more than 100 tons per day, and this amount is still growing, which has brought serious pollution to the urban environment and has become a major obstacle to urban construction. Water treatment sludge has become one of the bottlenecks of urban development . According to measurements, the calorific value of sludge after urban sewage treatment is about 3550kj / kg, and it is completely ...

Claims

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Application Information

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IPC IPC(8): F23G5/08F23G7/00
Inventor 姜贵利
Owner QINGDAO HAIZHONG ENVIRONMENTAL PROTECTION BOILER
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