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Feeding method of coal-oil slurry with different concentration in direct liquefaction of coal hydrogenation

A technology of reaction process and feeding method, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, and can solve problems that have not been reported.

Active Publication Date: 2019-04-23
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 coal-oil slurry with different concentration in direct liquefaction of coal hydrogenation
  • Feeding method of coal-oil slurry with different concentration in direct liquefaction of coal hydrogenation
  • Feeding method of coal-oil slurry with different concentration in direct liquefaction 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 comparison example, the hydrogen supply solvent consumption is reduced by 20.09 tons / hour, accounting for 8.23% of the comparison example hydrogen supply solvent amount.

[0401] The specific operation steps are as follows:

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

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 It is 57.26 tons / hour, compared with the comparative example, the amount of hydrogen-donating solvent is 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 invention provides a feeding method of coal-oil slurry with different concentrations in direct liquefaction of coal hydrogenation. The feeding method of the coal-oil slurry with different concentrations in direct liquefaction of coal hydrogenation includes the steps of reducing the ratio of solvent oil to coal for coal blending slurry, completing the preparation of low-viscosity heated dilutecoal slurry LCF-LT1 that usually contains a hydrogen donor during swelling process, allowing the low-viscosity heated dilute coal slurry LCF-LT1 to act as a dilutant and a heat carrier in the first thick coal slurry mixing process M1, directly heating high pressure first thick coal slurry with HCF1-PF as the first mixing coal slurry M1P of a temperature M1TK, best making the temperature of HCF1-PFrapidly exceed a viscosity-temperature peak area caused by temperature rise, rising the temperature M1P to near AR reaction temperature of a reaction process, such as 330-450 DEG C in the first mixing coal slurry heating process M1P-HX, then entering the direct liquefaction process of coal hydrogenation AR to conduct the direct liquefaction process of coal hydrogenation, performing tandem repeatuse of the above-mention concepts, adding 2 or multi-channel thick coal slurry to hot dilute coal slurry step by step, and then forming a combined heating and conveying process of multi-channel high coal concentration oil coal slurry.

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 using 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 th...

Claims

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Application Information

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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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