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Reaction kettle for directly liquefying coal and application thereof

A technology of direct coal liquefaction and reactor, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, and can solve problems such as the unavoidable settling of solid particles and coking, the complexity of internal components and gas distributors, and the harm to the earth's ecological environment. Achieve good heat exchange, uniform solid holdup, and uniform gas holdup distribution

Inactive Publication Date: 2009-12-23
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But people have following shortcoming when burning with solid raw coal form: one, can produce a large amount of harmful gases such as SO 2 , nitrogen oxides and dust, pollute the environment, cause large areas of acid rain, and endanger the earth's ecological environment
But its disadvantage is that when the coal slurry enters the reactor many times, it is still unavoidable to use the circulation pump
[0009] Chinese patent CN1435275A discloses a multi-stage loop reactor, which is characterized in that a multi-stage loop reactor is proposed and developed on the basis of the traditional bubble reactor, which can solve the problem of gas content in the annulus of the traditional inner loop reactor. The defects of low efficiency and low reaction efficiency can improve the mass transfer effect
Its disadvantage may be that the internal components and gas distributors in the reactor are too complicated, and it is difficult to avoid the settlement and generation of solid particles in the reactor for a complex reaction system involving liquid solvents, solid raw materials and catalysts such as direct coal liquefaction. focus problem

Method used

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  • Reaction kettle for directly liquefying coal and application thereof
  • Reaction kettle for directly liquefying coal and application thereof
  • Reaction kettle for directly liquefying coal and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 150g particle size is less than the lignite powder that 160 order Inner Mongolia produces, 300g tetrahydronaphthalene are mixed homogeneously (the weight portion ratio of the two is 35: 70), obtain slurry mixture; The material inlet 2 of described slurry mixture from reactor Pump into the reactor provided by the present invention with an inner volume of 1000ml. After the reactor is replaced by nitrogen, hydrogen is pressed into the upper space of the reactor from the gas inlet 1 of the reactor. The initial pressure of the hydrogen is 5MPa. The stirrer of the reaction kettle was used to raise the reaction temperature to 400°C and react for 60 minutes. Wherein the stirring speed of the stirrer in the reaction kettle is 800rpm. After the reaction, the liquid-solid product is discharged from the material outlet 6 at the bottom of the reactor, and the gas is discharged from the gas outlet 3 at the upper part of the reactor.

[0045] Product separation: After the reaction, u...

Embodiment 2

[0053] Mix 150g of lignite powder and 350g of hydrogenated anthracene oil with a particle size less than 200 meshes evenly (the weight ratio of the two is 40:93.3) to obtain a slurry mixture; the slurry mixture is imported from the reactor 2 pumped into the reaction kettle provided by the present invention with an inner volume of 1000ml, after nitrogen replacement in the reaction kettle, press hydrogen into the upper space of the reaction kettle from the gas inlet 1 of the reaction kettle, the initial pressure of hydrogen is 2MPa, Turn on the stirrer of the reaction kettle, raise the reaction temperature to 420° C., and react for 80 minutes. Wherein the stirring speed of the stirrer in the reaction kettle is 800rpm. After the reaction, the liquid-solid product is discharged from the material outlet 6 at the bottom of the reactor, and the gas is discharged from the gas outlet 3 at the upper part of the reactor.

[0054] The separation method of the product, the calculation met...

Embodiment 3

[0057] Mix 150g of bituminous coal powder and 150g of catalytic cracking residual oil with particle size less than 160 orders in Shanxi (the weight ratio of the two is 50:50) to obtain a slurry mixture; Inlet 2 is pumped into the reactor provided by the present invention with an inner volume of 1000ml. After the reactor is replaced by nitrogen, hydrogen is pressed into the upper space of the reactor from the gas inlet 1 of the reactor. The initial pressure of hydrogen is 7MPa , turn on the stirrer of the reaction kettle, raise the reaction temperature to 450° C., and react for 70 minutes. Wherein the stirring speed of the stirrer in the reaction kettle is 800rpm. After the reaction, the liquid-solid product is discharged from the material outlet 6 at the bottom of the reactor, and the gas is discharged from the gas outlet 3 at the upper part of the reactor.

[0058] The separation method of the product, the calculation method of the coal conversion rate and the yield of n-hex...

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Abstract

The invention discloses a reaction kettle for directly liquefying coal and an application thereof. The reaction kettle comprises a reaction kettle body and a stirrer arranged on the reaction kettle body, wherein a stirring shaft and a stirring paddle of the stirrer are arranged in the reaction kettle body; an air inlet communicated with the reaction kettle is arranged at the upper part of the stirring shaft; and an air outlet communicated with the air inlet is arranged at the lower part of the stirring shaft. The invention also discloses a method for directly liquefying coal by using the reaction kettle. Compared with the process of directly liquefying coal by adopting a common reaction kettle, when the reaction kettle provided by the invention is used for directly liquefying coal, the conversion rate of the coal and the yield of the components capable of being dissolved in n-hexane can be improved by about 50 percent, thereby greatly improving the conversion rate of the coal.

Description

technical field [0001] The present invention relates to a reaction kettle for direct liquefaction of coal, and also relates to a method for direct coal liquefaction by using the reaction kettle, specifically, various coal types including low-quality lignite and high-quality bituminous coal can be directly The method of hydrogenation liquefaction. Background technique [0002] Coal is the most abundant solid fossil fuel in the world and is widely distributed around the world. Since coal was discovered and utilized, people generally burn solid raw coal to generate heat, which is then used for heating, power generation or as power, and only a small part is further processed and refined. But people have following shortcoming when burning with solid raw coal form: one, can produce a large amount of harmful gases such as SO 2 , nitrogen oxides and dust, pollute the environment, cause large areas of acid rain, and endanger the earth's ecological environment. Second, the ash cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/06
Inventor 肖钢侯晓峰闫涛
Owner HANERGY TECH
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