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Separation device and separation system for pulverized coal gasification

A technology of separation device and pulverized coal, which is applied in the direction of swirl device and the device whose axial direction of swirl can be reversed, etc. It can solve the problems of unstable flow field inside the cyclone separator, escape of fine particles, and low separation efficiency. Achieve the effects of avoiding back-mixing and short-circuit flow, high carbon conversion rate, and high separation efficiency

Active Publication Date: 2021-01-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems mainly solved by the present invention is that in the prior art, the internal flow field of the cyclone separator is unstable, the pressure drop is high, the separation efficiency is low, and many fine particles escape from the gas riser. A separation device is provided

Method used

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  • Separation device and separation system for pulverized coal gasification
  • Separation device and separation system for pulverized coal gasification
  • Separation device and separation system for pulverized coal gasification

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The separation process is as follows: the fine ash and incompletely reacted carbon-containing particles reacted in the fluidized bed reactor enter the cyclone separator through the settling section together with the crude gas; the fine ash and incompletely reacted carbon-containing particles are separated in the cyclone In the pipeline in front of the inlet of the cyclone, after the sound waves in the sound field of the cyclone inlet speaker are reunited, larger particle clusters are formed and enter the cyclone separator for separation; The ring-shaped separation space, the tapered separation space and the ash hopper are gradually reunited and then separated in the process of sound wave radiation transmitted by the ring-shaped separation space speaker, the cone-shaped separation space speaker, and the speaker at the upper end of the ash hopper.

[0037] Inner Mongolia lignite was used in the experiment, and it was crushed to a size below 3mm to obtain pulverized coal. ...

Embodiment 2

[0039] The separation process is as follows: the fine ash and incompletely reacted carbon-containing particles reacted in the fluidized bed reactor enter the cyclone separator through the settling section together with the crude gas; the fine ash and incompletely reacted carbon-containing particles are separated in the cyclone In the pipeline in front of the inlet of the cyclone, after the sound waves in the sound field of the cyclone inlet speaker are reunited, larger particle clusters are formed and enter the cyclone separator for separation; The ring-shaped separation space, the tapered separation space and the ash hopper are gradually reunited and then separated in the process of sound wave radiation transmitted by the ring-shaped separation space speaker, the cone-shaped separation space speaker, and the speaker at the upper end of the ash hopper.

[0040] Inner Mongolia lignite was used in the experiment, and it was crushed to a size below 3mm to obtain pulverized coal. ...

Embodiment 3

[0042] The separation process is as follows: the fine ash and incompletely reacted carbon-containing particles reacted in the fluidized bed reactor enter the cyclone separator through the settling section together with the crude gas; the fine ash and incompletely reacted carbon-containing particles are separated in the cyclone In the pipeline in front of the inlet of the cyclone, after the sound waves in the sound field of the cyclone inlet speaker are reunited, larger particle clusters are formed and enter the cyclone separator for separation; The ring-shaped separation space, the tapered separation space and the ash hopper are gradually reunited and then separated in the process of sound wave radiation transmitted by the ring-shaped separation space speaker, the cone-shaped separation space speaker, and the speaker at the upper end of the ash hopper.

[0043] Inner Mongolia lignite was used in the experiment, and it was crushed to a size below 3mm to obtain pulverized coal. ...

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Abstract

The invention relates to a separation device and a separation method for pulverized coal gasification. The problems of unstable internal flow field, high pressure drop, low separation efficiency and escape of more fine particles from a riser of a cyclone separator in the prior art are mainly solved. According to the separation device and the separation method for pulverized coal gasification, a pressure stabilizing rod is arranged in the center of the interior of the separation device and used for reducing the separation space and bottom trailing vortex strength of the separator, meanwhile loudspeaker sound fields are arranged at different positions such as an inlet, an annular separation space, a conical separation space and an ash bucket of the separation device, sound wave radiation istransmitted through a sound field, fine powder particles in the cyclone separator are aggregated into large particle clusters, and then cyclone separation is conducted, so that the technical problem is well solved, and the device and the method can be applied to industrial production of pulverized coal gasification separation or other gas-solid separation.

Description

technical field [0001] The invention relates to a separation system for pulverized coal gasification. Background technique [0002] As a widely used gas-solid separation equipment, cyclone separator is especially suitable for high temperature and high pressure separation process. In the coal gasification (or other coal conversion) process, whether it is an entrained bed reactor or a fluidized bed reactor, the gas-solid separation equipment directly affects the carbon conversion rate, environmental protection and economy. Commonly used separation equipment cannot meet environmental protection requirements. , especially when the separation efficiency is low, the pressure of water washing is very high, which is very serious for water pollution; For large-scale industrial installations, the efficiency of the separation equipment determines the feasibility and economy of the entire system. The separation equipment in the prior art is mainly a conventional cyclone separator, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04C5/26B04C5/04B04C5/12B04C9/00
CPCB04C5/26B04C5/04B04C5/12B04C9/00
Inventor 徐俊钟思青金渭龙高攀
Owner CHINA PETROLEUM & CHEM CORP
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