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Carbon replenishment method for producing synthetic oil and synthetic gas from dry distillation coal gas

A technology for dry distillation of coal gas and synthesis gas, applied in the petroleum industry, coke ovens and other directions, can solve the problems of difficult coal dry distillation enterprise promotion, complex process, large one-time investment, etc., to improve environmental quality, simple process, and low equipment investment. Effect

Active Publication Date: 2015-08-12
绿薪洁净能源科技(大连)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing technologies are complicated in process and large in one-time investment, so it is difficult to popularize them in coal dry distillation enterprises in my country

Method used

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  • Carbon replenishment method for producing synthetic oil and synthetic gas from dry distillation coal gas
  • Carbon replenishment method for producing synthetic oil and synthetic gas from dry distillation coal gas
  • Carbon replenishment method for producing synthetic oil and synthetic gas from dry distillation coal gas

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Carry out the carbon supplement method of a kind of dry distillation coal gas synthesis oil syngas provided by the present invention, the concrete steps of its described method are as follows:

[0089](1) Determining the raw material for carbon supplementation: Limestone ore is used in this example, and its composition (wt%) is: CaO 54.3%, burning loss rate 42.7%, and impurities 3.0%.

[0090] (2) Determining the furnace coal material: the furnace coal material composition (wt%) is: 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; Quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0091] (3) Carbon replenishment method: The coal in the furnace was tested by a 40kg small coke oven (the charge was isolated from the air and continuously heated for 24 hours, the temperature of the center of the charge reached 1100°C before being released from the furnace, and it was cooled to roo...

Embodiment 2

[0100] Dolomite ore composition (wt%): CaO 30.4%, MgO 21.7%, burning loss rate 47.4%, impurity 0.46%.

[0101] The furnace coal is composed of 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; its quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0102] The coal into the furnace was tested in a 40kg small coke oven (the charge was continuously heated for 20 hours in isolation from the air, and the center temperature of the charge reached 1050°C before it was released from the furnace, and it was cooled to room temperature after coke quenching): the gas production rate of the charge into the furnace was 353.4 Nm 3 / t; In dry distillation gas before adding carbonate carbon replenishing raw materials: H 2 57.5%, CH 4 24.5%, CO7.5%, CO 2 2.8%, the rest is N 2 、C m h n , O 2 Wait. CO 2 The conversion ratio is calculated as 0.55, and the hydrogen-to-carbon ratio R before alkane co...

Embodiment 3

[0111] Dolomite ore composition (wt%): CaO 30.4%, MgO 21.7%, burning loss rate 47.4%, impurity 0.46%.

[0112] The furnace coal is composed of 30% lean coal, 35% 1 / 3 coking coal, 20% fat coal and 15% main coking coal; its quality index (wt%): V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%, cohesion index G=74, fineness (≤3mm)=73.6%.

[0113] The coal into the furnace was tested in a 40kg small coke oven (the charge was continuously heated for 15 hours in isolation from the air, the center temperature of the charge reached 950°C before being released from the furnace, and it was cooled to normal temperature after coke quenching): the gas production rate of the charge into the furnace was 353.4 Nm 3 / t; In dry distillation gas before adding carbonate carbon replenishing raw materials: H 2 54.5%, CH 4 25.5%, CO10.7%, CO 2 3.7%, the rest is N 2 、C m h n , O 2 Wait. CO 2 The conversion ratio is calculated as 0.55, and the hydrogen-to-carbon ratio R before alkane conve...

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Abstract

The invention relates to a carbon supplementing method for the preparation of synthetic oil and synthetic gas from dry distillation gas. The method comprises the steps of adding a carbonate carbon supplementing raw material, of which the granularity is not greater than 80 meshes, into furnace charging coal proportionally, mixing, then, loading the mixture to a dry distillation furnace for heating, then, discharging a red hot furnace charge, then, quenching to cool to normal temperature, then, screening, so as to obtain solid clean fuel, and enabling produced CO2 and CO to directly enter the dry distillation gas, so as to be matched with superfluous H2, thereby realizing the aim of carbon supplementing. According to the method disclosed by the invention, a carbonate mineral is directly added into the dry-distillation furnace charging coal, and the CO2 and CO produced due to thermal decomposition are applied to the carbon supplementing of the dry distillation gas; the method has the characteristics of rich source of raw materials, simple process flow, small equipment investment, low carbon supplementing cost, good economical efficiency and the like, and can be widely applied to the project of comprehensive utilization of high and medium-temperature dry distillation gases.

Description

technical field [0001] The invention relates to a method for producing synthetic oil and synthetic gas by dry distillation of coal gas; in particular, a method for supplementing carbon when producing synthetic oil and synthetic gas by dry distillation of coal gas. Background technique [0002] Coal combustion is the main way for my country to obtain energy at present and for a long time in the future. The direct combustion of a large amount of coal has led to serious air pollution in my country, frequent haze weather, and ineffective use of chemicals in coal. The waste is serious, resulting in process economy Poor sex. Therefore, the implementation of dry distillation (topping) of coal to fully recover the chemicals contained in coal has formed a broad consensus in the industry on the efficient cascade utilization of coal. [0003] After coal dry distillation gas is recovered by chemical production, the main component is H 2 、CH 4 , CO, CO 2 , N 2 、C m h n After deep p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/06C10B57/18
Inventor 杜文广刘守军张智聪上官炬杨颂
Owner 绿薪洁净能源科技(大连)有限公司