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Gas-solid phase reaction separation system and separation method thereof

A separation system and separation method technology, applied in the gas-solid phase reaction separation system and its separation field, can solve the problems of water washing process wastewater polluting the environment, complex dust removal process, etc., and achieve high mechanical strength, achieve continuity, and prevent membrane pollution. Effect

Active Publication Date: 2010-06-30
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a gas-solid phase reaction separation system in the gas-solid phase reaction process with simple process, high dust removal efficiency and no environmental pollution. Another purpose of the present invention is to provide a gas-solid phase reaction separation method, which Methods The combination of new inorganic membrane cross-flow filter and traditional bag filter is used to realize gas-solid separation, simplify the existing process, and solve the disadvantages of complex wet dust removal process and wastewater pollution caused by water washing process.

Method used

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  • Gas-solid phase reaction separation system and separation method thereof
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  • Gas-solid phase reaction separation system and separation method thereof

Examples

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Embodiment 1

[0028] Example 1: Biomass Power Generation Dust Removal System

[0029] The present invention is described in detail below in conjunction with accompanying drawing:

[0030] A) The entire system consists of a gasifier, an inorganic membrane cross-flow filter, a bag filter, a fan and a compressor. The gasifier and the inorganic membrane cross-flow filter are all made of stainless steel. High-temperature flue gas inlet 1, clean gas outlet 8, dense dust gas outlet 9 and blowback gas inlet 11; gasifier outlet is equipped with a fan, and is connected to high-temperature flue gas inlet 1 through stainless steel pipelines; clean gas outlet 8 is through stainless steel The pipeline is connected to the post-processing section, and a port on the pipeline is connected to the blowback gas inlet 11 through the compressor through the stainless steel pipeline; the dusty gas outlet 9 is connected to the bag filter through the stainless steel pipeline; the outlet of the bag filter is connected...

Embodiment 2

[0036] Embodiment 2: organosilicon dust removal device

[0037] The present invention is described in detail below in conjunction with accompanying drawing:

[0038] A) The high-temperature flue gas (a) enters the inorganic membrane cross-flow filter (II) under the action of the centrifugal fan (IV) for separation, using a zirconia membrane with a pore size of 0.2 μm, 19 channels, and the inner diameter of the channel is 6mm. The cross-flow velocity is 30m / s, the transmembrane pressure difference is 0.1MPa, and the gas dust concentration at the feed side is 0.9308g / m 3 , at the beginning of filtration, the flux of the membrane tube is 51.5m 3 / m 2 h, the mixed gas containing dense dust passes through the bag filter (III) under the action of the fan, and the total content of the gas mixed through the inorganic membrane cross-flow filter (II) and the bag filter (III) Dust concentration is 1.1mg / m 3 .

[0039] Such as figure 2 As shown, the high-temperature flue gas (a) at...

Embodiment 3

[0043] Embodiment 3: coal gasification dust removal

[0044] Coal powder and air are gasified in the reactor to generate gas; during normal operation, the high-temperature flue gas is passed into the inorganic membrane cross-flow filter along the tangential direction under the action of the centrifugal fan, and the airflow rotates from top to bottom. In the process, the dust moves along the filter wall along the filter wall to the bottom of the filter for dust collection under the joint action of the downward airflow and gravity. The dust-laden gas flows upward from the bottom of the filter through the ceramic filter tube, and a part of the dust in the mixed gas It is captured and removed by the inorganic membrane, and the dense dust gas trapped by the inorganic membrane flow filter enters the bag filter for terminal dust removal; four porous FeAl alloy symmetrical membranes with a pore diameter of 10 μm are used, a single tube, an inner diameter of 50mm, and a cross-flow veloc...

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Abstract

The invention relates to a gas-solid phase reaction separation system and a separation method thereof. The separation method comprises the following steps that: high-temperature flue gas (a) enters an inorganic membrane cross flow filter (II), airflow makes the circular rotation movement from the upper part to the lower part along a rotation channel (5) in a filter (II), partial particles in the airflow are thrown to the filter wall by inertial centrifugal force and collected in a dust collecting chamber (7) at the bottom of the filter, and the gas enters a membrane component (3) from the bottom to the upper part along a central exhaust passage (6) and is subjected to gas-solid separation through the sieving action of an inorganic membrane; the purified clean gas (b) enters an after-treatment (A) section; concentrated dust gas (d) intercepted by the inorganic membrane filter enters a bag-type filter (III) for collecting solid dust; the gas permeating the cloth bag filter enters the after-treatment (A) section; and the dust (e) intercepted by the inorganic membrane filter (II) and the bag-type filter (III) returns to a reactor (I) to take part in reaction.

Description

technical field [0001] The invention relates to a gas-solid phase reaction separation system and its separation method, in particular to a gas-solid phase reaction product dust and gas separation system and separation process, used for gas-solid phase catalytic reaction process and gas-solid phase non-catalytic reaction process. Background technique [0002] Gas-solid separation is the separation of gaseous heterogeneous systems. It is a separation process used in chemical industry, metallurgy, coal combustion and gasification, cement, environmental protection and other industries, especially the removal and recovery of solid particles in high-temperature gases. It has always been a major issue in industrial waste gas treatment and environmental protection. The recovery of useful powder, especially the recovery of high value-added dust can create considerable economic benefits. For example, recovery of catalysts in fluidized bed equipment in petrochemical plants, collectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D46/02B01D46/24
Inventor 邢卫红仲兆祥张桂花徐南平
Owner NANJING UNIV OF TECH
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