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Method for measuring optimal reaction temperature of direct coal liquefaction

A technology for direct coal liquefaction and reaction temperature, applied in the field of coal liquefaction, can solve problems such as the inability to obtain optimal reaction temperature, and achieve the effects of improving liquefaction conversion rate and liquefied oil yield, reducing system errors, and ensuring true accuracy

Inactive Publication Date: 2020-07-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical scheme can measure the gas holdup, reaction time and reaction characteristics of the direct coal liquefaction reaction, but cannot obtain the optimal reaction temperature in the direct coal liquefaction process

Method used

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  • Method for measuring optimal reaction temperature of direct coal liquefaction
  • Method for measuring optimal reaction temperature of direct coal liquefaction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Hand-select coal samples with bright color and luster to obtain vitrinite-rich coal samples;

[0034] (2) Use a crusher to crush the coal sample to 0.5-3 mm, and sieve and collect the vitrinite particles with a smaller particle size;

[0035] (3) Grinding the vitrinite enrichment to make coal powder and carrying out chemical deashing treatment, and then pulverizing with a rod mill to obtain a coal powder sample;

[0036] (4) Weigh 28 g of vitrinite-enriched pulverized coal sample and put it into an autoclave for liquefaction experiment. The experimental conditions for liquefaction are: the initial pressure of hydrogen is 10.0MPa, the solvent for hydrogen is tetrahydronaphthalene, and the coal sample and solvent are added in a mass ratio of 1:1.5. The catalyst is ferric oxide, the mass of the catalyst is 3% of the coal sample, and sulfur is used as a co-catalyst. The reaction temperature is raised to 330°C and kept constant for 60 minutes. After the constant tempera...

Embodiment 2

[0039] (1) Select bright coal samples by hand to obtain vitrinite-rich coal samples.

[0040] (2) Use a crusher to crush the coal sample to 0.5-3mm, and sieve to collect the vitrinite particles with smaller particle size.

[0041] (3) Grinding the vitrinite enrichment to make coal powder and chemical deashing treatment, and then rod milling to obtain a coal powder sample.

[0042] (4) Weigh 28 g of vitrinite-enriched pulverized coal sample and put it into an autoclave for liquefaction experiment. The experimental conditions for liquefaction are: the initial pressure of hydrogen is 10.0MPa, the solvent for hydrogen is tetrahydronaphthalene, and the coal sample and solvent are added in a mass ratio of 1:1.5. The catalyst is ferric oxide, the mass of the catalyst is 3% of the coal sample, and sulfur is used as a co-catalyst. After the reaction temperature rises to 380°C, it is kept constant for 60 minutes. After the constant temperature is completed, the temperature must be cool...

Embodiment 3

[0045] (1) Select bright coal samples by hand to obtain vitrinite-rich coal samples.

[0046] (2) Use a crusher to crush the coal sample to 0.5-3mm, and sieve to collect the vitrinite particles with smaller particle size.

[0047] (3) Grinding the vitrinite enrichment to make coal powder and chemical deashing treatment, and then rod milling to obtain a coal powder sample.

[0048] (4) Weigh 28 g of vitrinite-enriched pulverized coal sample and put it into an autoclave for liquefaction experiment. The experimental conditions for liquefaction are: the initial pressure of hydrogen is 10.0MPa, the solvent for hydrogen is tetrahydronaphthalene, and the coal sample and solvent are added in a mass ratio of 1:1.5. The catalyst is ferric oxide, the mass of the catalyst is 3% of the coal sample, and sulfur is used as a co-catalyst. After the reaction temperature rises to 420°C, it is kept constant for 60 minutes. After the constant temperature is completed, the temperature must be cool...

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Abstract

The invention relates to a method for measuring the optimal reaction temperature of direct coal liquefaction. The method comprises the following steps: S1, selecting a coal sample with bright color toobtain a vitrinite-rich coal sample; S2, crushing, refining and screening the vitrinite-rich coal sample, and collecting to obtain vitrinite-rich particles; S3, grinding the vitrinite-rich particlesto prepare primary pulverized coal, and deashing to obtain a pulverized coal sample; S4, carrying out a liquefaction test on the pulverized coal sample; and S5, taking the reaction temperature corresponding to the maximum value of the coal conversion rate and the liquefied oil yield as the optimal reaction temperature for direct coal liquefaction based on the liquefaction data in the step S4. Compared with the prior art, the optimal temperature of the direct coal liquefaction reaction is obtained by adopting a simple determination method, the liquefaction conversion rate and the liquefied oilyield of the coal are effectively improved, the liquefaction performance of the coal can be better utilized, wide application prospects and market potentials are achieved from the aspects of resourceutilization and economy, actual industrial and application values are achieved, and the coal liquefaction technology is promoted to be developed forwards.

Description

technical field [0001] The invention relates to the technical field of coal liquefaction, in particular to a method for measuring the optimal reaction temperature of direct coal liquefaction. Background technique [0002] With the rapid development of the economy, China's demand for oil is increasing day by day. According to statistics, in 2012, China's dependence on overseas crude oil supply has reached 58%, which poses a huge challenge to my country's energy security. Coal direct liquefaction technology is a technology that converts coal hydrogenation into liquid fuel under the action of a catalyst in a high temperature and high pressure environment. Through coal liquefaction technology, coal can be turned into oil, which is very important for balancing my country's energy status, maintaining energy and society. The sustainable development of coal, the protection of the environment and the guarantee of national security are of great significance. reactivity, combustion reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22G01N31/10G01N1/28
CPCG01N1/286G01N31/10G01N33/222G01N2001/2866
Inventor 蔺华林王叶函严春阳叶伟林韩生
Owner SHANGHAI INST OF TECH