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Feeding method of oil-coal slurry with different concentrations in the direct liquefaction process of coal hydrogenation

A reaction process, coal hydrogenation technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve problems that have not been reported

Active Publication Date: 2022-05-10
洛阳瑞华新能源技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0031] Technical scheme similar to the present invention has no report

Method used

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  • Feeding method of oil-coal slurry with different concentrations in the direct liquefaction process of coal hydrogenation
  • Feeding method of oil-coal slurry with different concentrations in the direct liquefaction process of coal hydrogenation
  • Feeding method of oil-coal slurry with different concentrations in the direct liquefaction process of coal hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0400] Based on the control example, under the premise that the temperature of each operating point is constant, the coal slurry is divided into thin coal slurry and thick coal slurry. The coal concentration of the thin coal slurry is the same as that of the control example, which is 45.05%. That is, 50 tons / hour of coal powder is used to prepare the first thick coal slurry, and the coal:oil weight ratio of the first thick coal slurry is increased to 55:45, so that the amount of hydrogen-donating solvent of the first thick coal slurry is 81.8% of that of coal blending %, 50 tons / hour of solvent oil for coal blending is 40.9 tons / hour, compared with the comparative example, the amount of hydrogen-supplying solvent is reduced by 20.09 tons / hour, accounting for 8.23% of the amount of hydrogen-supplying solvent in the comparative example.

[0401] The specific operation steps are as follows:

[0402] (1) In the lean coal slurry pressurization process LCF-IP, the thin coal slurry L...

Embodiment 2

[0420] Based on embodiment one, only the coal: oil weight ratio of the thick coal slurry is increased to 65:35, so that the hydrogen-supplying solvent consumption of the first thick coal slurry is 53.8% of coal blending, and the coal blending solvent of 50 tons / hour Oil is 26.92 tons / hour, compared with the comparative example, the amount of hydrogen-donating solvent is reduced by 34.08 tons / hour, accounting for 14.0% of the amount of hydrogen-donating solvent in the comparative example.

Embodiment 3

[0422]Based on the comparative example, the coal slurry is divided into thin coal slurry and the first thick coal slurry, the concentration of the thin coal slurry is the same as that of the comparative example, which is 45.05%, and 35% coal powder, that is, 70 tons / hour of coal, is used to prepare The first thick coal slurry, the coal: oil weight ratio of the first thick coal slurry is increased to 55: 45, the amount of hydrogen-supplying solvent of the thick coal slurry is 81.8% of coal blending like this, 70 tons / hour solvent oil for coal blending 57.26 tons / hour, compared with the comparative example, the amount of hydrogen-donating solvent was reduced by 28.14 tons / hour, accounting for 11.53% of the amount of hydrogen-donating solvent in the comparative example.

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Abstract

The feeding method of different concentrations of oil-coal slurry in the direct liquefaction process of coal hydrogenation can reduce the solvent oil-coal ratio of coal blending slurry, and complete the swelling process of low-viscosity heated thin coal slurry LCF usually containing hydrogen-donating agent ‑LT1, in the first thick coal slurry mixing process M1, acts as a diluent and heat carrier, directly heats the first high pressure thick coal slurry HCF1‑PF to be the first mixed coal slurry M1P whose temperature is M1TK, preferably HCF1‑PF The temperature quickly crosses the viscous temperature peak area caused by the temperature rise; then in the first mixed coal slurry heating process M1P‑HX, M1P is heated to a temperature close to the reaction temperature of the AR reaction temperature, such as 330-450 °C, and then enters the coal hydrogenation direct liquefaction reaction The process AR carries out the direct liquefaction reaction of coal hydrogenation; the concept of the present invention is used repeatedly in series, and two or more thick coal slurries are added step by step to the hot thin coal slurry to form a combination of multiple high-coal concentration oil-coal slurries for temperature rise delivery process.

Description

technical field [0001] The invention relates to a method for feeding coal with different concentrations of oil-coal slurry in the direct liquefaction reaction process of coal hydrogenation, which can reduce the ratio of solvent oil to coal for coal blending slurry, and complete the swelling process of low-viscosity, usually containing hydrogen-donating agent. Coal slurry LCF-LT1, in the first thick coal slurry mixing process M1, acts as a diluent and heat carrier, and directly heats the high-pressure first thick coal slurry HCF1-PF to be the first mixed coal slurry M1P with a temperature of M1TK, preferably The temperature of HCF1-PF quickly crosses the viscous temperature peak area caused by the temperature rise; then in the first mixed coal slurry heating process M1P-HX, M1P is heated to a temperature close to the reaction temperature of the reaction process AR, such as 330-450 °C, and enters coal hydrogenation The direct liquefaction reaction process AR carries out the dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/06
CPCC10G1/06
Inventor 何巨堂
Owner 洛阳瑞华新能源技术发展有限公司
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