A swirl filter combined pyrolysis gas dedusting device and method with adjustable flow rate

A technology of cyclone filtration and dust removal device, which is applied in cyclone devices, devices whose axial directions of cyclone can be reversed, etc., can solve the problem of not taking into account the attenuation of centrifugal separation, unfavorable pyrolysis dust collection, increased pressure drop, etc. problem, to achieve the effect of promoting overall performance, short residence time and reducing load

Active Publication Date: 2021-11-09
INST FOR PROCESS MODELING & OPTIMIZATION JITRI
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  • Abstract
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  • Application Information

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Problems solved by technology

Invention patent CN102805986A discloses a combined dust collector with cyclone separation and particle bed cross-flow filtration. The device is designed with a swirl sheet structure in the outer swirl area to force the dust-laden airflow to rotate to improve the efficiency of centrifugal separation. Structure increases pressure drop while detrimental to pyrolysis dust collection
Invention patents CN106215590A, CN106621583A and utility model patent CN2076640U all adopt the combination of cyclone separation and granular bed cross-flow filtration. Although these methods can play the role of cyclone separation, the above devices do not take into account the increase in filtration pressure drop caused by The problem that the cyclone gas velocity is reduced and the centrifugal separation effect is attenuated

Method used

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  • A swirl filter combined pyrolysis gas dedusting device and method with adjustable flow rate
  • A swirl filter combined pyrolysis gas dedusting device and method with adjustable flow rate
  • A swirl filter combined pyrolysis gas dedusting device and method with adjustable flow rate

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Embodiment 1

[0033] This embodiment is a Φ200mm, 20mm×60mm direct-cut tangential air inlet tangential reverse cyclone separator, a Φ150mm particle bed filter and a vortex fan controlled by a frequency converter. Such as figure 1 , the inlet of the frequency conversion fan is connected with the tangential outlet of the circulating airflow of the bottom ash hopper to carry out the pumping cycle, and the outlet of the frequency conversion fan is connected with the inlet of the dust-laden airflow. The test was carried out at room temperature, and the test device was operated with suction-type negative pressure. The gas is sucked in directly from the atmosphere, passed through a cyclone separator and a particle bed filter, and then evacuated by a fan. The swirling air velocity and filtering air velocity are measured by the Pitot tube on the pipeline. The dust concentration was measured at the outlet of the dust collector and the outlet of the bottom circulating airflow to calculate the total ...

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Abstract

The invention discloses a cyclone filter combined pyrolysis gas dedusting device and method with adjustable flow velocity, belonging to the field of high temperature dedusting. It includes a cyclone separator, a granular bed filter and a frequency conversion fan. The cyclone separator adopts a tangential flow reversal type cylindrical cone structure. It is used on the outside of the cyclone separator for suction circulation and the circulating air volume is adjusted by the frequency converter to control the cyclone air velocity and filter air velocity. The invention keeps the gas velocity constant during the operation process, not only makes full use of the centrifugal separation effect of the downward external swirling flow, but also enables the incoming dust-laden gas to pass through the particle bed for fine filtration.

Description

technical field [0001] The invention belongs to the field of high-temperature dust removal, and in particular relates to a dust removal and purification device and method for biomass, coal or oil shale pyrolysis gas. Background technique [0002] The thermal conversion processing technology for the pyrolysis of biomass, coal or oil shale to produce gas and liquid fuels and chemicals is very important for the efficient and clean use of solid fossil fuels and organic resources, alleviating the shortage of oil and gas resources in my country, and developing my country's alternative oil and gas strategic emerging industries has an important supporting role. Among them, biomass, coal or oil shale undergoes pyrolysis reaction in the pyrolysis device, and the solid particles in the generated high-temperature pyrolysis gas have small particle size (particles below 10 μm), high content, high viscosity, easy coking, and strong corrosion And easy secondary reaction. For the dust remov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B04C9/00B04C5/04B04C11/00
CPCB04C5/04B04C9/00B04C11/00B04C2009/004
Inventor 詹敏述游明皓陈江李朝阳吴斌
Owner INST FOR PROCESS MODELING & OPTIMIZATION JITRI
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