Method for simultaneously producing liquid fuel and asphalt paving materials by coprocessing coal and heavy oil

A liquid fuel and co-processing technology, which is applied in the processing of gas fuel, tar pitch/petroleum pitch/natural pitch, and fuel, etc., can solve the problems of inability to increase oil yield, reduce oil yield, etc., so as to reduce one-time investment and The effect of long-term operation cost, reduction of hydrogenation depth, and reduction of reaction severity

Inactive Publication Date: 2010-02-17
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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Problems solved by technology

However, if the residual oil used does not have a good hydrogen supply capacity, it will not only fail to increase th...

Method used

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  • Method for simultaneously producing liquid fuel and asphalt paving materials by coprocessing coal and heavy oil

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Effect test

Embodiment 1

[0044] Coal / catalytic cracking oil slurry=2 / 3 (wt, dry coal basis), red mud is used as a catalyst, and the addition amount is 3% (wt, dry coal basis). The above mixture is preheated to 310°C by a preheater, and reacted for 1 hour in a forced circulation ebullated bed reactor at 380-400°C and 10MPa hydrogen pressure.

[0045] The reaction product is separated by a high-temperature separator at 350°C and 10MPa, and the top product of the high-temperature separator enters a low-temperature separator at 200°C and 3MPa to separate into gas-liquid two-phase. The gaseous substances are purified by the eight-tower pressure swing adsorption device at 2.12MPa and 35°C. The separated hydrogen is returned to the reactor for recycling, and the rest of the gas is desulfurized and purified by the alcohol amine absorption method and used as fuel. The liquid product at the bottom of the low-temperature separator is condensed and separated from oil and water to obtain light oil. The bottom pro...

Embodiment 2

[0049] Coal / catalytic cracking oil slurry=1 / 1 (wt, based on dry coal), and molybdenum sulfide is added as a catalyst in an amount of 0.05% (wt, based on dry coal). The above mixture was preheated to 300° C. by a preheater, and reacted in a tubular reactor at 390° C. and 11 MPa hydrogen pressure for 1 hour.

[0050] The reaction product is separated by a high-temperature separator at 330°C and 11MPa. The top product of the separator is purified by an eight-column pressure swing adsorption device at 3.85MPa and 40°C. The separated hydrogen is returned to the reactor for recycling, and the rest The gas is used as fuel after desulfurization and purification by liquid phase redox method. Liquid and solid substances enter the flash tower with a temperature of 320°C and a pressure of 0.016 MPa, and the top product is condensed and separated from oil and water to obtain light oil. The bottom product is passed through the atmospheric distillation tower at 350°C and 0.138MPa operating ...

Embodiment 3

[0054] Coal / atmospheric residual oil=3 / 5 (wt, dry coal base), the preparation method of ultra-fine and highly dispersed iron-based catalysts is: add 7 g of saturated solution of ferrous sulfate to 100 g of coal sample, stir evenly, and then add 3.5 g Saturated solution of sodium sulfide, stirred evenly, and then vacuum-dried at 80°C for 5 hours to prepare an ultrafine and highly dispersed iron-based catalyst loaded on a coal sample. The addition amount of the superfine highly dispersed iron-based catalyst is 20% (wt, based on dry coal). The above mixture is preheated to 330° C. by a preheater, and reacted for 1.5 hours in a forced circulation suspended bed reactor at 400° C. and 8-10 MPa hydrogen pressure.

[0055] The reaction product is separated by a high-temperature separator at 360°C and 8-10MPa, and the top product of the high-temperature separator enters a low-temperature separator at 210°C and 3-4MPa to separate into gas-liquid two-phase. Gaseous substances are purifi...

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Abstract

The invention relates to a method for simultaneously producing liquid fuel and asphalt paving materials by coprocessing coal and heavy oil. The method comprises the following steps: mixing coal dust, catalyst and heavy oil to prepare pulp; preheating and entering a reactor to carry out reaction; separating reaction products to separate gaseous substance, light oil, water and heavy mixture; extracting hydrogen from the separated gaseous substance through pressure swing adsorption; returning the purified hydrogen to the reactor to be used circularly, and using the remaining gas as fuel after purification; carrying out oil-water separation on the separated light oil and water to obtain the light oil and the water; leading the heavy mixture into a distilling tower to obtain coarse oil and tower bottom product through distillation separation; mixing the coarse oil and the light oil to obtain liquid fuels of gasoline, kerosene, diesel fuel, fuel oil, and the like through upgrading process; and processing the tower bottom product to get the asphalt paving materials. The invention has the advantage that under the moderate process condition, the liquid fuel and asphalt paving materials canbe produced simultaneously.

Description

technical field [0001] The invention belongs to a method for simultaneously producing liquid fuel and asphalt paving materials by co-processing coal and heavy oil. Background technique [0002] Liquid fuel is currently the most important energy material in the world, a necessity in today's society, and the guarantee of social civilization. Liquid fuels are mainly derived from petroleum extracted from the ground. Oil is not evenly distributed on the earth, and China is an oil-poor country. [0003] Asphalt is a common binder used in paving to bind stones together. Asphalt is mainly derived from petroleum. As a cementing material, asphalt must withstand high temperature, low temperature, atmospheric precipitation and other climatic factors and heavy loads. It is required to have sufficient cohesiveness, durability, and the characteristics of no flow at high temperature and no embrittlement at low temperature. High-performance modified asphalt is required for special road s...

Claims

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Application Information

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IPC IPC(8): C10G1/06C10G7/00C10C1/16C10C3/00C10C3/14C08L95/00C10L3/00
Inventor 刘振宇杨建丽陈垒
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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