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System and method for comprehensively utilizing low-calorific-value raw coke oven gas

A technology of waste gas and low calorific value, applied in the field of coal chemical industry, can solve the problem of undisclosed waste gas with low calorific value, etc., and achieve the effect of simple system

Inactive Publication Date: 2020-01-10
新疆新伊碳能环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no complete method for dealing with low calorific value raw gas

Method used

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  • System and method for comprehensively utilizing low-calorific-value raw coke oven gas

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, this embodiment discloses a low-calorific-value raw gas comprehensive utilization system, including an electric coke capture unit, a PSA adsorption unit, a sulfur recovery unit, a combustion unit, and a power generation unit connected in sequence, and the electric coke capture unit and combustion The units are all connected with a waste water treatment unit, and the combustion unit is also connected with a flue gas treatment unit and a circulation cooling unit, and the circulation cooling unit is also connected with a power generation unit and a waste water treatment unit.

[0030] The electric coke-catching unit is also connected with a coal tar collection unit and a gas generator, and the gas generator is connected with the coal tar collection unit, and the coal tar collection unit is also connected with a coal tar hydrogenation unit .

[0031] The PSA adsorption unit is also connected with a hydrogen recovery unit, and the hydrogen recover...

Embodiment 2

[0039] This embodiment discloses a method for comprehensive utilization of raw coal gas with low calorific value. The method includes the following steps:

[0040] (1) The raw coal gas with low calorific value is sequentially processed by the electric coke capture unit, PSA adsorption unit and sulfur recovery unit to obtain high-quality raw material gas and coal tar, and the remaining analytical gas is used as fuel gas;

[0041] (2) The fuel gas is burned to generate electricity through the combustion unit, and the generated flue gas is discharged after being treated by the flue gas treatment unit, and the raw gas is used as the main processing raw material for subsequent products;

[0042] (3) The waste water obtained in each treatment process is treated by the waste water treatment unit, and used for the recycling of the coke quenching water of the gas generator and the spray water of the coal yard.

[0043] Among them, the soot content in the gas treated by the flue gas tre...

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Abstract

The invention relates to a system and a method for comprehensively utilizing low-calorific-value raw coke oven gas. The system comprises an electric coke capturing unit, a PSA adsorption unit, a sulfur recovery unit, a combustion unit and a power generation unit which are connected in sequence, the electric coke catching unit and the combustion unit are both connected with a wastewater treatment unit, the combustion unit is further connected with a flue gas treatment unit and a circulating cooling unit, and the circulating cooling unit is further connected with the power generation unit and the wastewater treatment unit. The method comprehensively utilizes the raw coke oven gas tail gas to generate power, H2 and CO in the raw coke oven gas are extracted as raw materials of chemical products in the next step, and are purified to serve as a boiler fuel gas, high-pressure steam generated by the boiler drives a steam turbine and a generator set to generate power, and the combusted flue gasis discharged after being treated. The method is an environmentally-friendly technology for comprehensively utilizing the raw coke oven gas generated in domestic low-calorific-value generation furnaces and changing wastes into valuables.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a system and method for comprehensive utilization of raw coal gas with low calorific value. Background technique [0002] China is a country with a lot of coal and little oil, especially the kind of coal with a relatively high oil content. Coal tar and raw coal gas are by-products of semi-coke production, and coal tar can be stored, and in recent years, domestic coal tar hydrogenation technology has become increasingly mature, and the demand for coal tar is increasing, while raw coal gas is not easy to store and not easy to transport , the only way to deal with it now is to burn it directly, which wastes resources and damages the environment. Raw coal gas contains a lot of H 2 , CO, CH 4 Wait, the H inside 2 And CO is the main raw material of chemical products, if it is flaring and burning, it is a waste of resources. There is no complete method fo...

Claims

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Application Information

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IPC IPC(8): C10K1/00C10K1/04C10L3/08F01D15/10F01K23/10F01K27/00C01B3/56C01B17/04
CPCC01B3/508C01B17/04C10K1/002C10K1/004C10K1/046C10L3/08F01D15/10F01K23/10F01K27/00
Inventor 从洪伦商德民
Owner 新疆新伊碳能环保科技股份有限公司