Processing method of coal and oil co-refining

A treatment method and co-smelting technology, which is applied in the upgrading field of coal and low-quality heavy oil co-smelting, can solve the problems of low conversion rate and easy clogging of solid coal powder, and achieve improved reaction effect, improved fusion effect, and improved degassing The effect of the ability to remove impurities

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology allows for better separation between different types of material by creating an environment where both liquid phase (liquid) and gas phases are mixed together without losing their original properties during processing. By supplying this mixture with specific chemicals at certain conditions, it becomes possible to break down difficultly dissolved substance into smaller particles called “cokes” while still maintaining its main property like fuel quality. Additionally, there may be other ways to make these mixtures work effectively when combined with another type of acidic solution. Overall, this innovation makes efficient production processes from crude oils easier than before.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency of producing lighter fuel while reducing costs associated with conventional processes used for treatment purposes like catalysis cracks that use expensive fossil fuels.

Method used

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  • Processing method of coal and oil co-refining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment -1

[0021] The mixed raw material of Tahe residual oil and Ningxia lignite (the blending ratio of coal is 35% of the residual oil quality) and tetralin joins the static mixer, (keep excess tetralin, coal and oil co-refining raw material and The weight ratio of tetrahydronaphthalene is 1: 6), after the material is heated, enter CSTR (continuously stirred tank reactor), pressurize, heat up and start to stir, rotating speed 800 revs / min, pressurize to 20MPa, heat up to 400 ℃, The reaction time is 3h. The reacted product enters the separator after being filtered to separate the gas phase and the liquid phase, and the solid impurities separated by filtration can be burned or used as raw materials for the production of needle coke, and the liquid phase enters the fractionation tower. The fractionation column separates the various products as well as excess hydrogen-donating solvent. Excess hydrogen donating solvent can be recycled. The reaction effect is shown in Table 1.

Embodiment -2

[0023] Using the mixture of Tahe residual oil and Ningxia lignite as raw material (the blending ratio of coal is 5% of the residual oil quality), the steps are the same as in Example-1, the hydrogen-donating solvent is decahydronaphthalene, and the coal and oil co-refining raw material and The hydrogen-donating solvent weight ratio is 1: 2, the reaction pressure is 35MPa, the reaction temperature is 450°C, and the reaction time is 0.5h (CSTR is continuous feeding and discharging, and the reaction time is the average residence time of the material), after being processed by the method of the present invention After that, the reaction results are shown in Table 2.

Embodiment -3

[0025] By the same method as in Example 2, water was added simultaneously, and the weight ratio of water to coal and oil co-refining raw materials was 1: 1. The reaction results are shown in Table 2.

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Abstract

The invention discloses a processing method of coal and oil co-refining. The method comprises the following steps: mixing a coal and oil co-refining raw material and a hydrogen-donor solvent, wherein the hydrogen-donor solvent comprises tetrahydronaphthalene or decahydronaphthalene, and the weight ratio of the coal and oil co-refining raw material to the hydrogen-donor solvent is (1:0.5)-(1:10); processing the mixture of the coal and oil co-refining raw material and the hydrogen-donor solvent for 0.2-5 hours at the pressure of 15-40 MPa and the temperature of 300-500 DEG C; separating solid impurities from the processed product; and then, fractionating. Compared with the prior art, in the method provided by the invention, a synergic effect exists between coal and heavy oil, the coal and oil co-refining effect is promoted, and the coal and heavy oil conversion rate is higher.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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