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High-temperature fluidized-bed reaction device and method for gasifying carbon-containing materials thereof

A high-temperature fluidized bed and high-temperature technology, which is applied in the gasification of granular/powdered fuels, the manufacture of combustible gases, and the petroleum industry. problems, to achieve the effects of high single furnace processing capacity, high carbon conversion rate, and fast gasification reaction rate

Active Publication Date: 2021-01-15
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the operating temperature of the whole bed is higher than the softening temperature of carbonaceous material ash, it will lead to agglomeration and slagging of carbonaceous material particles, which will cause the gasifier to lose its fluid state and be forced to stop
Due to the limitation of operating temperature, the gasification rate of carbonaceous material particles cannot be further increased, resulting in a low throughput of a single fluidized bed gasifier
With the increase of fine powder content in modern coal mining technology, the content of fine powder in coal fed into the fluidized bed gasifier will increase, and fine powder is easily carried out in the gasifier, that is, the residence time of fine powder is short , so that the fine powder cannot fully react
At the same time, a large amount of semi-coke fine powder brought out from the top of the fluidized bed gasifier, due to the limitation of the operating temperature of the fluidized bed, makes it difficult for the semi-coke fine powder to be further transformed in the gasifier, and the large amount of semi-coke fine powder brought out is harmful to the gasification process. The overall conversion rate of carbon in the carbonization system has a great impact and has become an urgent problem to be solved

Method used

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  • High-temperature fluidized-bed reaction device and method for gasifying carbon-containing materials thereof
  • High-temperature fluidized-bed reaction device and method for gasifying carbon-containing materials thereof

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Experimental program
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Effect test

Embodiment 1

[0044] The high-temperature fluidized-bed gasification furnace of the present invention includes three units: a high-temperature moving bed ash discharge unit, a high-temperature gasification reactor unit, and a semi-coke fine powder circulation conveying unit;

[0045] The high-temperature moving bed ash discharge unit consists of a moving bed ash discharge circular furnace body 1, a bottom support body 5, a middle rotating support body 6, a central pipe 7, a rotating ash discharge furnace pan 8, an ash discharge port 9, an upper row It consists of a slag hopper 10, a lower slag discharge hopper 11, and a gasification agent inlet pipe 12. The bottom support body 5 is located at the bottom of the moving bed ash discharge circular furnace body 1. The bottom support body 5 is fixed with a central pipe 7, which is located at the bottom support On the vertical center line of the body 5, the inlet of the central pipe 7 is connected to one end of the gasification agent inlet pipe 12 ...

Embodiment 2

[0068] The diameter of the circular furnace body of the high-temperature gasification reactor unit is D and the height is H; the diameter of the moving bed ash discharge circular furnace body 1 is D and the height is 0.05H.

[0069] The raw material for gasification is Wenshan lignite in Yunnan, the coal feed rate is 2600Kg / h, and the oxygen feed rate is 1600Nm 3 / h, the water vapor intake is 2500Kg / h, the sand intake is 24Kg / h, the pressure of the gasifier is controlled at 1.0MPa, the temperature of the lower part 2 of the circular furnace body is stable at 950°C, and the gasification agent inlet pipe in the middle of the circular furnace body 19 Introduce 155Nm3 / h of oxygen and 50Kg / h of steam to maintain the temperature of the middle part 3 of the circular furnace body at 980°C, and 77Nm of oxygen into the upper gasification agent inlet pipe 20 of the circular furnace body 3 / h and steam rate 41Kg / h, maintain the temperature of circular body of heater top (4) at 950 ℃, all ...

Embodiment 3

[0071] The diameter of the circular furnace body of the high-temperature gasification reactor unit is D and the height is H; the diameter of the moving bed ash discharge circular furnace body 1 is D and the height is 0.15H.

[0072] The gasification raw material is Jincheng anthracite, the coal input is 3000Kg / h, and the oxygen input is 2100Nm 3 / h, the water vapor intake is 3500Kg / h, the sand intake is 38Kg / h, the pressure of the gasifier is controlled at 1.5MPa, the temperature of the lower part 2 of the circular furnace body is stable at 1200 °C, and the gasification agent is fed into the middle of the circular furnace body The amount of oxygen fed into the trachea 19 is 190Nm 3 / h and steam volume 61Kg / h, maintain the temperature of the middle part 3 of the circular furnace body at 1125°C, and the gasification agent inlet pipe 20 in the upper part of the circular furnace body is fed with an oxygen volume of 95Nm 3 / h and steam rate 51Kg / h, maintain the temperature of circ...

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Abstract

The invention discloses a high-temperature fluidized bed reaction device and a method of gasifying a carbonic material by adopting the high-temperature fluidized bed reaction device. The device comprises a high-temperature movable bed ash discharging unit, a high-temperature gasification reactor unit and a circular fine semicoke powder conveying unit; the method of gasifying the carbonic materialcomprises the steps of preparation of the carbonic material and sand grains, gas supplying, high-temperature gasification, residue discharging and fine powder conveying. The device and the method havethe advantages that the gasification reaction rate is high, the carbon conversion rate is high, and the treatment capacity of a single furnace is high.

Description

technical field [0001] The invention belongs to a high-temperature fluidized bed gasification furnace and a method for gasifying carbon-containing materials. Background technique [0002] Fluidized bed gasification technology is an important gasification technology. The Winkler furnace that gasifies carbonaceous material particles in a fluidized state starts a series of subsequent similar processes, including dilute phase fluidization. For example, the TRIG fluidized bed gasification technology developed by Kellogg Brown & Root Company in the United States, the U-gas fluidized bed gasification technology developed by GTI, the HRL fluidized bed gasification technology developed in Australia, and the BHEL fluidized bed gasification technology developed by Bharat Heavy Electrical Limited in India. technology. The Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences has successfully developed the "Ash fusion fluidized bed gasification process and device" (application...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10J3/72C10J3/84
Inventor 李俊国房倚天程中虎聂伟王志青黄戒介
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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