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System and method for preparing fertilizer from garbage

A technology for preparing fertilizers and garbage, which is applied in the field of solid waste resource treatment, can solve problems such as difficulties in industrialization promotion, low dioxin content, and huge sludge output, and achieve good economic benefits, simple processes, and increased economy. Effect

Inactive Publication Date: 2017-03-15
北京源农炭肥技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, in some waste incineration processes, a large amount of sludge obtained after sewage treatment in the factory area accumulates, causing great harm to the environment
Some individual garbage pyrolysis processes, although the dioxin content is very low, the sludge output is also huge, it is difficult to effectively use, and it is difficult to promote industrialization

Method used

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  • System and method for preparing fertilizer from garbage
  • System and method for preparing fertilizer from garbage
  • System and method for preparing fertilizer from garbage

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment adopts figure 1 The system shown and figure 2 The process route shown treats the waste. The moisture content of the waste used is 36%, and its specific composition is shown in Table 1. The specific treatment process is as follows:

[0058] The garbage with a moisture content of 36% is sent to the sorting device 1 to remove inorganic substances such as glass and metal, and then enters the crushing equipment 2 to select garbage raw materials with an average particle size of less than 100mm. The garbage raw materials are sent to the regenerative rotary bed 3, the temperature of the regenerative radiant tube in the drying zone is 600°C, and the temperature of the regenerative radiant tube in the pyrolysis zone is 720°C. Garbage in the rotary regenerative bed 3 successively undergoes drying, pyrolysis and gas production, etc., and finally the pyrolysis water flows from the side wall of the furnace at the end of the drying zone of the regenerative rotary be...

Embodiment 2

[0061] This embodiment adopts figure 1 The system shown and figure 2 The process route shown treats the waste. The moisture content of the garbage used is 35%, and its specific composition is shown in Table 1. The specific treatment process is as follows:

[0062] The garbage with a moisture content of 36% is sent to the sorting device 1 to remove inorganic substances such as glass and metal, and then enters the crushing equipment 2 to select garbage raw materials with an average particle size of less than 100mm. The garbage raw materials are sent to the regenerative rotary bed 3, the temperature of the regenerative radiant tube in the drying zone is 550°C, and the temperature of the regenerative radiant tube in the pyrolysis zone is 920°C. Garbage in the rotary regenerative bed 3 successively undergoes drying, pyrolysis and gas production, etc., and finally the pyrolysis water flows from the side wall of the furnace at the end of the drying zone of the regenerative rotary ...

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Abstract

The invention discloses a system and method for preparing fertilizer from garbage. The system comprises a heat storage type rotating bed, a sewage treatment station and an aerobic composting device. The heat storage type rotating bed is provided with a raw material inlet, a gas inlet, a smoke outlet, a pyrolysis water outlet, a pyrolysis oil-gas mixture outlet and a pyrolysis carbon outlet. The sewage treatment station is provided with a pyrolysis water inlet, a purified water outlet and a sludge outlet. The pyrolysis water inlet is connected with the pyrolysis water outlet of the heat storage type rotating bed. The aerobic composting device is provided with a sludge inlet, a fertilizer outlet, a heat source inlet and a cold gas outlet. The sludge inlet is connected with the sludge outlet of the sewage treatment station, and the heat source inlet is connected with the smoke outlet of the heat storage type rotating bed. The system and method are low in operating cost, simple in process, high in waste heat recovery utilization rate and good in product economic benefit, and industrialization and a large scale are easy to achieve.

Description

technical field [0001] The invention belongs to the field of solid waste resource treatment, and in particular relates to a system and method for preparing fertilizer from waste. Background technique [0002] Garbage disposal has become another severe environmental problem that our country faces after the energy crisis, water pollution control, and industrial waste disposal. At present, the annual output of municipal solid waste in my country is about 250 million tons, and the accumulated garbage around the city has reached 7 billion tons, covering an area of ​​more than 800,000 mu. About 2 / 3 of the 661 cities are surrounded by garbage. The loss was as high as 30 billion yuan. [0003] Sludge aerobic composting technology is a process in which organic matter is continuously degraded and stabilized through the action of microorganisms under certain conditions, and a product suitable for land use is produced. [0004] In the prior art, in some garbage incineration processes, ...

Claims

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Application Information

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IPC IPC(8): C05F17/02C05F17/00C10B53/00C02F3/12
CPCC10B53/00C02F3/12C05F17/00C05F17/90Y02P20/129Y02W30/40Y02W10/10
Inventor 刘璐张安强蔡先明任浩华周方远肖磊吴道洪
Owner 北京源农炭肥技术有限公司