Heavy tar and fine powder treatment method

A heavy tar and treatment method technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, cracking, etc., can solve the problems that restrict the clean and efficient utilization of coal, and the difficulty of effective utilization of fine powder and heavy tar, so as to improve the carbon conversion rate and the effect of utilization

Active Publication Date: 2016-06-08
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, it is difficult to effectively utilize a large amount of fine powder and heavy tar produced by coal cata

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Use 1# coal as the raw material for catalytic gasification, collect heavy tar and fine powder in the product, and detect the temperature and proportion of each fraction of heavy tar, as shown in Table 1:

[0086] Table 1

[0087] Distillation temperature / ℃

[0088] 1. Carry out pretreatment to described heavy tar and described fine powder respectively

[0089] The heavy tar and (toluene and methanol) mixed solution were mixed at a mass ratio of 4:1, ultrasonically oscillated for 1.5h, and the fine powder was activated with steam at 180°C for 1.2h, and the steam and the The mass ratio of the fine powder is 3.

[0090] 2. Mix the mixture of the heavy tar after the activation treatment with the mixed solution and the fine powder after the activation treatment, the mass ratio of the fine powder to the heavy tar is 2.5, and stir for 2.5 hours at a speed of 250 rpm .

[0091]3. React for 1.5 hours at a temperature of 380° C. and a pressure of 22 MPa in a supercri...

Embodiment 2

[0097] Use 2# coal as the raw material for catalytic gasification, collect heavy tar and fine powder in the product, and detect the temperature and proportion of each fraction of heavy tar, as shown in Table 3:

[0098] table 3

[0099] Distillation temperature / ℃

[0100] 1. Carry out pretreatment to described heavy tar and described fine powder respectively

[0101] The heavy tar and toluene were mixed at a mass ratio of 7:1, ultrasonically oscillated for 1 h, and the fine powder was activated with steam at 220° C. for 2 h, and the mass ratio of the steam to the fine powder was 2.2.

[0102] 2. Under the protection of nitrogen, mix the heavy tar after the activation treatment with the mixture of the mixed solution and the fine powder after the activation treatment, the mass ratio of the fine powder to the heavy tar is 4, at 350 rpm Stirring at high speed for 1.5h.

[0103] 3. React for 2 hours in a supercritical state with a temperature of 350°C and a pressure of ...

Embodiment 3

[0109] Use 3# coal as the raw material for catalytic gasification, collect heavy tar and fine powder in the product, and detect the temperature and proportion of each fraction of heavy tar, as shown in Table 5:

[0110] table 5

[0111] Distillation temperature / ℃

＜180

180-210

210-230

230-300

300-360

＞360

Mass percentage / %

0.9

1.13

5.67

4.55

24.3

63.45

[0112] 1. Carry out pretreatment to described heavy tar and described fine powder respectively

[0113] The heavy tar and (toluene, methanol and tetrahydrofuran) mixed solution were mixed at a mass ratio of 5.5:1, ultrasonically oscillated for 2 hours, and the fine powder was activated with steam at 250°C for 3 hours, and the steam and the The mass ratio of the fine powder is 3.5.

[0114] 2. Under the protection of nitrogen, mix the heavy tar after the activation treatment with the mixture of the mixed solution and the fine powder after the activation tre...

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Abstract

The invention relates to the technical field of coal catalytic gasification, in particular to a heavy tar and fine powder treatment method. Heavy tar and fine powder can be converted into a light-weight oil product, so that conditions are created for the clean and efficient utilization of coal. The embodiment of the invention provides the heavy tar and fine powder treatment method. The heavy tar and the fine powder respectively contain catalysts. The method comprises the following steps that activation treatment is performed on the heavy tar to obtain the heavy tar subjected to activation treatment; the activation treatment is performed on the fine powder to obtain the fine powder subjected to the activation treatment; wherein the heavy tar subjected to the activation treatment comprises a first active intermediate, and the fine powder subjected to the activation treatment comprises a second active intermediate; 2, the heavy tar subjected to the activation treatment and the fine powder subjected to the activation treatment are mixed; the mixture is introduced into a supercritical reactor; under the supercritical state of an organic solvent, the first active intermediate and the second active intermediate take a reaction to produce the light-weight oil product and ash slag.

Description

technical field [0001] The invention relates to the technical field of coal catalytic gasification, in particular to a method for processing heavy tar and fine powder. Background technique [0002] Coal catalytic gasification technology refers to the technology in which coal and gasification agent (steam, oxygen, etc.) undergo a gasification reaction under the catalytic action of a catalyst to generate high-concentration methane and by-product tar. Usually, before the coal catalytic gasification reaction, The catalyst is loaded in the coal powder to improve the catalytic gasification effect. During the coal catalytic gasification reaction process, specifically, the coal powder enters the gasifier from the feed port and undergoes a pyrolysis reaction under the fluidization of the gasification agent. Produce crude gas, light oil, and heavy tar, and collapse into a large amount of fine powder under the action of thermal shock. Among them, the residence time of fine powder in th...

Claims

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Application Information

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IPC IPC(8): C10G11/02
CPCC10G11/02C10G2300/701
Inventor 祖静茹李克忠刘雷
Owner ENN SCI & TECH DEV
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