Garbage pyrolysis system and method

A technology of waste and pyrolysis, which is applied in the combination of gasification process, petroleum industry, fuel pre-dry distillation, etc., can solve problems such as blockage, and achieve the effect of reducing energy consumption, reducing energy consumption of waste gasification, and saving process costs.

Pending Publication Date: 2017-07-25
BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a system and method for pyrolysis of garbage, which uses red mud as a solid heat carrier to pyrolyze garbage. Red mud is beneficial to the thermal decomposition of organic matter, thermal cracking of tar, and avoids problems such as tar clogging.

Method used

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  • Garbage pyrolysis system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] 1. The garbage is sent to the trommel screen for screening, and the slag, sand and other inorganic substances in the garbage are screened out from the sieve holes to obtain the screened garbage.

[0083] 2. Send the screened garbage to the magnetic separator to obtain magnetically separated garbage after metal removal.

[0084] 3. Send the magnetically separated garbage into the crusher, and obtain broken garbage after crushing. The particle size of the broken garbage is 8mm.

[0085] 4. Mix the crushed garbage and additives in a kneader to obtain a mixture.

[0086] 5. Send the mixture into the granulator to obtain garbage granules, which are rod-shaped materials with a length of 30mm and a diameter of 10mm.

[0087] 6. Drying and crushing the red mud to obtain red mud particles, the particle size of the red mud particles is 50 mm.

[0088] 7. The furnace bottom speed of the pyrolysis furnace is 1h / r, and the furnace pressure is 200Pa (relative pressure); after the r...

Embodiment 2

[0097] 1. The garbage is sent to the trommel screen for screening, and the slag, sand and other inorganic substances in the garbage are screened out from the sieve holes to obtain the screened garbage.

[0098] 2. Send the screened garbage to the magnetic separator to obtain magnetically separated garbage after metal removal.

[0099] 3. Send the magnetically separated garbage into the crusher, and obtain broken garbage after crushing. The particle size of the broken garbage is 10mm.

[0100] 4. Mix the crushed garbage and additives in a kneader to obtain a mixture.

[0101] 5. Send the mixture into the granulator to obtain garbage granules, which are rod-shaped materials with a length of 30mm and a diameter of 10mm.

[0102] 6. Drying and crushing the red mud to obtain red mud particles, the particle size of the red mud particles is 40mm.

[0103] 7. The furnace bottom speed of the pyrolysis furnace is 1h / r, and the furnace pressure is 200Pa (relative pressure); after the r...

Embodiment 3

[0112] 1. The garbage is sent to the trommel screen for screening, and the slag, sand and other inorganic substances in the garbage are screened out from the sieve holes to obtain the screened garbage.

[0113] 2. Send the screened garbage to the magnetic separator to obtain magnetically separated garbage after metal removal.

[0114] 3. Send the magnetically separated garbage into the crusher, and obtain broken garbage after crushing. The particle size of the broken garbage is 9mm.

[0115] 4. Mix the crushed garbage and additives in a kneader to obtain a mixture.

[0116] 5. Send the mixture into the granulator to obtain garbage granules, which are rod-shaped materials with a length of 30mm and a diameter of 10mm.

[0117] 6. Drying and crushing the red mud to obtain red mud particles, the particle size of which is 60 mm.

[0118] 7. The furnace bottom speed of the pyrolysis furnace is 1h / r, and the furnace pressure is 200Pa (relative pressure); after the red mud enters th...

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Abstract

The invention discloses a garbage pyrolysis system and method. The system includes a garbage pretreatment unit, a pyrolysis furnace, a red mud pretreatment unit, and a carbon gasification unit; the red mud pretreatment unit includes a red mud dryer and a red mud crusher; the garbage particle outlet of the garbage pretreatment unit is connected to a thermal The feed port of the furnace, the dry red mud outlet of the red mud dryer is connected to the dry red mud inlet of the red mud crusher, the red mud particle outlet of the red mud crusher is connected to the feed port of the pyrolysis furnace, and the The discharge port is connected to the pyrolysis charcoal inlet of the charcoal gasification unit. The invention uses red mud as a heat carrier to pyrolyze garbage, reduces pyrolysis energy consumption, improves the pyrolysis gasification rate of garbage, and avoids the problem of tar blockage.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a system and method for pyrolyzing garbage by using red mud. Background technique [0002] At present, the growth rate of my country's municipal solid waste output is about 10% in recent years, and the national municipal solid waste harmless treatment rate is required to reach more than 80%. In recent years, the more popular waste disposal methods are waste pyrolysis and gasification. Pyrolysis is a decomposition reaction carried out in an oxygen-deficient or oxygen-free reducing atmosphere, which is completely harmless and is not conducive to the formation of dioxins. At the same time, artificial gas, fuel oil and solid charcoal with certain calorific value are produced. So, pyrolysis has huge potential advantages. However, simply treating domestic waste through pyrolysis not only requires higher temperatures and high energy consumption, but also the tar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/58
CPCC10J3/58C10J2300/0906C10J2300/0909C10J2300/0946C10J2300/0986
Inventor 蔡先明王福佳肖磊张安强贾懿曼吴道洪
Owner BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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