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Pulverized coal pyrolysis dedusting system with granular bed and cyclone deduster inside

A technology of cyclone dust collector and particle bed, which is applied in the field of coal classification and cascade utilization, can solve the problems of complex powder coke and pyrolysis oil and gas components, difficulty in direct utilization and storage, high solid content of coal tar, and achieve high-efficiency dust removal problems , good heat preservation effect and short residence time

Active Publication Date: 2016-08-24
SHENWU TECH GRP CO LTD
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  • Claims
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Problems solved by technology

However, the pulverized coal pyrolysis powder coke and pyrolysis oil and gas components obtained through pyrolysis technology are extremely complex, the solid content in coal tar is relatively high, and the oil quality is poor, making it difficult to directly use and store, and difficult for industrial application

Method used

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  • Pulverized coal pyrolysis dedusting system with granular bed and cyclone deduster inside
  • Pulverized coal pyrolysis dedusting system with granular bed and cyclone deduster inside

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Effect test

Embodiment 1

[0050] The pyrolysis reaction system is used to process Australian lignite, and the comparison between adding granular bed dust removal and cyclone dust collector is shown in Table 1.

[0051] serial number Pyrolysis gas dust removal method Dust content after dust removal 1 Cyclone dust removal 125mg / Nm 3 2 Cyclone + granular bed dust removal 37mg / Nm 3

Embodiment 2

[0053] The pyrolysis reaction system is used to process Indonesian lignite, and the comparison between adding granular bed dust removal and cyclone dust collector is shown in Table 2.

[0054] serial number Pyrolysis gas dust removal method Dust content after dust removal 1 Cyclone dust removal 132mg / Nm 3 2 Cyclone + granular bed dust removal 34mg / Nm 3

[0055] The pulverized coal pyrolysis dust removal system with built-in particle bed provided by the present invention has the advantages of high temperature resistance, good heat preservation effect and corrosion resistance, can work normally at a high temperature of 500-600 °C, and can effectively prevent condensation in the pyrolysis gas The dust-containing tar generated by the gas due to temperature changes causes it to adhere to the dust removal equipment, thereby effectively avoiding accelerated aging of the equipment or even making it useless under high temperature conditions. Moreover...

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Abstract

The invention belongs to the field of quality-based gradient utilization of coal and mainly relates to a dedusting system used in pulverized coal pyrolysis. Aiming at the defects of the prior art, a pulverized coal pyrolysis dedusting system with a granular bed and a cyclone deduster inside is designed and developed. Characteristics of a reactor itself are combined, the cyclone deduster is adopted for primary dedusting, pyrolysis gas after being primarily dedusted by the cyclone deduster enters the granular bed for secondary dedusting, pyrolysis char is utilized as a filtering material, and the filtering material is easy to reproduce, so that the dedusting problem of pulverized coal pyrolysis gas can be solved with low cost and high efficiency.

Description

technical field [0001] The invention belongs to the field of cascade utilization of coal quality, and mainly relates to a dust removal system in the pyrolysis process of pulverized coal. Background technique [0002] The cascade utilization of low-rank coal is an important field of my country's 13th Five-Year Coal Chemical Industry, especially for the large amount of low-rank pulverized coal in my country, how to effectively utilize it has become the focus of research. Adopt pyrolysis technology to extract low-rank coal oil gas, and use the remaining semi-coke to generate electricity or use it as a raw material for gasification. Compared with coal gasification technology, the investment is small and the water consumption is low. It is a technical path for clean and efficient utilization of coal advocated by my country. . However, during the pyrolysis process of pulverized coal, the pyrolysis gas carries a large amount of dust particles. During the pyrolysis process of pulver...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/18
CPCC10B53/04C10B57/18
Inventor 陈水渺肖磊薛逊姜朝兴吴道洪
Owner SHENWU TECH GRP CO LTD
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