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Three-waste processing method and system in coal-to-gas technology of fixed bed

A treatment method and technology of a treatment system, which are applied in the field of three-waste treatment in a fixed-bed coal-to-gas process, can solve the problems of poor production environment, unbearable, large water consumption, etc. The effect of construction costs

Inactive Publication Date: 2018-08-10
上海境业环保能源科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The composition of wastewater is complex, the concentration of pollutants is high, and the corresponding treatment load requirements are high
[0008] (2) Wastewater contains phenol, cyanide, and ammonia substances, which are highly toxic and will inhibit microbial activity
[0009] (3) The biodegradability of wastewater is poor, and the BOD / COD ratio is usually lower than 0.3, which is not easy to biodegrade
[0010] (4) The wastewater treatment site is large, the cost is high, and the investment is large
[0011] (5) The processing equipment and pipelines are severely corroded, resulting in poor production environment
[0012] (6) The water consumption required for the treatment of the three wastes is large
And frequent replacement of filter media will inevitably interrupt production. For enterprises, the cost of replacing filter media and economic losses caused by interrupted production are difficult to bear.

Method used

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Embodiment Construction

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings based on these drawings and obtain other implementations.

[0045] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product.

[0046] A method for treating the three wastes of a fixed-bed coal-to-gas process, comprising the following steps:

[0047] First, before enabling the gas-solid separator 8 to carry out the gas-solid separation operation, ash is charged in the crude gas pipeline 12 connected to the gas-so...

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Abstract

The invention discloses a three-waste processing method in a coal-to-gas technology of a fixed bed. A traditional gas-water separation device is replaced with a gas-solid separation device, and therefore a cooling tower and a waste water processing pool huge in occupied area in a traditional process are omitted, the construction cost of a system is reduced, the use cost of a large amount of waterresources and the purification processing cost of waste water are saved, and therefore the use and maintenance cost of the system is reduced; extremely high economy is realized compared with the traditional process, the production cost of a coal chemical industry enterprise is greatly reduced, people are more willing to use the system, and extremely good market prospects are realized.

Description

technical field [0001] The invention relates to a method and system for treating three wastes in a fixed-bed coal-to-gas process, belonging to the technical field of environmental protection. Background technique [0002] The current common fixed bed coal gasification production process is as follows: figure 1 As shown, the lump coal is incompletely combusted in the oxygen-poor environment of the gasifier, and the crude gas is formed under the comprehensive reaction of coal, oxygen and steam, and the accompanying substances generated by the low-temperature (900°C) reaction, including (ammonia nitrogen, phenol, Volatile phenol, petroleum, sulfide, cyanide, SS, etc.), crude gas is discharged from the top of the gasifier, recovered by waste heat boiler waste heat, and then washed by a water washing tower to form semi-finished water gas. [0003] The washing wastewater discharged after being cooled and washed by the water washing tower contains a large amount of particulate mat...

Claims

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Application Information

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IPC IPC(8): C10K1/02C10K1/04F23G7/04
CPCC10K1/024C10K1/02C10K1/04F23G7/04
Inventor 周列
Owner 上海境业环保能源科技股份有限公司
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