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Method for production of clean gas fuel from printing and dyeing sludge pyrolysis gas

A technology for printing and dyeing sludge and cleaning gas, which is applied in the production of hydrogen/syngas, removal of gas pollutants, sludge treatment, etc. The effect of the coefficient of friction

Inactive Publication Date: 2020-03-06
邵帅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since carbon, hydrogen, oxygen, and sulfur are the main constituent elements of printing and dyeing sludge, the pyrolysis gas generated during the processing of printing and dyeing sludge contains a large amount of carbon dioxide, carbon monoxide, sulfur dioxide, methane, and hydrogen, which are directly discharged Not only cause waste of resources, but also easily cause secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for producing clean gas fuel by using printing and dyeing sludge pyrolysis gas, the specific method is as follows:

[0028] 1) Press filter the printing and dyeing sludge to a moisture content of 20%, then add calcium oxide and iron powder, mix and dry at 40°C for 5 hours, then grind and pass through a 100-mesh sieve to obtain raw materials for use;

[0029] 2) Introduce nitrogen into the muffle furnace with rotating rod for 20 minutes to replace the air in the muffle furnace, then add the raw materials into the muffle furnace, heat to 150°C, keep it for 2h, then raise the temperature to 600°C, stabilize After 2 minutes, turn on the rotating rod, stir and calcinate for 3 hours according to the rotating speed of 10r / min;

[0030] 3) After the calcination is completed, the pyrolysis gas in the muffle furnace is introduced into the gas collection tank through the condensing system through the pipeline, and then the gas in the gas collection tank is passed into the...

Embodiment 2

[0044] A method for producing clean gas fuel by using printing and dyeing sludge pyrolysis gas, the specific method is as follows:

[0045] 1) Press filter the printing and dyeing sludge to a moisture content of 25%, then add calcium oxide and iron powder, mix and dry at 45°C for 4 hours, then grind and pass through a 100-150 mesh sieve to obtain raw materials for use;

[0046] 2) Introduce nitrogen gas into the muffle furnace with rotating rod for 25 minutes to replace the air in the muffle furnace, then add the raw materials into the muffle furnace, heat to 180°C, keep it for 1.5h, and then raise the temperature to 700°C, After stabilizing for 3 minutes, turn on the rotating rod, stir and calcinate for 2.5 hours at a speed of 15r / min;

[0047] 3) After the calcination is completed, the pyrolysis gas in the muffle furnace is introduced into the gas collection tank through the condensing system through the pipeline, and then the gas in the gas collection tank is passed into th...

Embodiment 3

[0061] A method for producing clean gas fuel by using printing and dyeing sludge pyrolysis gas, the specific method is as follows:

[0062] 1) Press filter the printing and dyeing sludge until the water content is 30%, then add calcium oxide and iron powder, mix and dry at 50°C for 3 hours, then grind and pass through a 150-mesh sieve to obtain raw materials for use;

[0063] 2) Introduce nitrogen into the muffle furnace with rotating rod for 30 minutes to replace the air in the muffle furnace, then add the raw materials into the muffle furnace, heat to 200°C, keep it for 1h, then raise the temperature to 750°C, stabilize After 5 minutes, turn on the rotating rod, stir and calcinate for 2 hours according to the rotating speed of 20r / min;

[0064] 3) After the calcination is completed, the pyrolysis gas in the muffle furnace is introduced into the gas collection tank through the condensation system through the pipeline, and then the gas in the gas collection tank is passed into...

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Abstract

The invention discloses a method for production of clean gas fuel from printing and dyeing sludge pyrolysis gas. The specific method includes: 1) carrying out filter pressing on printing and dyeing sludge, then mixing the obtained printing and dyeing sludge with calcium oxide and iron powder, performing drying, and then conducting grinding; 2) adding the raw materials into a muffle furnace, and conducting stirring and calcination; 3) introducing the pyrolysis gas generated by calcination into a gas collection tank through a condensation system, and then introducing the gas into a muffle furnace filled with nitrogen, and conducting high-temperature heating; and 4) introducing the cooled gas into a gas separator under the action of an asymmetric electrostatic field for gas separation, and then conducting low-temperature pressurization liquefaction on the separated gas to obtain the high-purity clean gas fuel. Through a multistage separation method, impurity gas is removed from the pyrolysis gas generated by high-temperature calcination of the printing and dyeing sludge, so that high-purity hydrogen fuel can be obtained, the method not only can turn waste into wealth, but also is conducive to improving environmental pollution, and has remarkable economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing sludge processing, and in particular relates to a method for producing clean gas fuel by using pyrolysis gas of printing and dyeing sludge. Background technique [0002] Printing and dyeing sludge is the industrial wastewater produced by textile printing and dyeing factories in the process of textile production and printing. , chromium, zinc, mercury and other heavy metals. At present, most of the sludge treatment in textile wastewater treatment plants is simple concentration and dehydration process, and then transported abroad for disposal. After conventional dehydration treatment, the sludge has a moisture content of about 80%, large capacity, softness, and poor geotechnical strength. It is easy to be corrupted and has a bad smell during transportation, so the pollution of printing and dyeing sludge has become an important industrial pollution problem. [0003] At present, the deep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B57/10C10K1/00C02F11/122C01B3/24C01B3/50C02F103/30
CPCC01B3/24C01B3/50C01B3/503C01B2203/046C01B2203/0465C01B2203/047C01B2203/0475C02F11/122C02F2103/30C10B53/00C10B57/10C10K1/003
Inventor 邵帅
Owner 邵帅