Pulse charge intensification-filtration catalysis integrated flue gas purification device and method

A flue gas purification and catalytic filtration technology, applied in chemical instruments and methods, combined devices, separation methods, etc., can solve problems such as clogging and difficult removal of filter cakes outside the membrane layer, so as to improve removal efficiency and reduce one-time investment and operating costs, the effect of avoiding secondary pollution

Pending Publication Date: 2021-06-01
江苏省环境工程技术有限公司
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Problems solved by technology

Since membrane filtration relies on the "surface filtration" of the membrane layer to achieve high precision and high efficiency, an electric field is formed on the outer surface of the ceramic membrane, and the use of Coulomb force to strengthen the removal of d

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  • Pulse charge intensification-filtration catalysis integrated flue gas purification device and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041]Example 1

[0042]The amount of simulated smoke is 200m3 / h, flue gas temperature 350 ° C, filter rate 1.2m / min, flue gas particulate concentration 500mg / m3, VOCS concentration 200mg / m3Hg0Concentration 200μg / m3The catalytic active components of the catalytic filter tube 4 include manganese oxide and vanadium oxide, the mass content of the catalytic active component is 1%, when the pulse power is turned off, the concentration of the exhaust gas outlet is tested, and the particulate matter removal is calculated. Efficiency 93.1%, VOCS removal efficiency 60%, HG0Removal efficiency is 50%.

Example Embodiment

[0043]Example 2

[0044]The amount of simulated smoke is 200m3 / h, flue gas temperature 350 ° C, filter rate 1.2m / min, flue gas particulate concentration 500mg / m3, VOCS concentration 200mg / m3Hg0Concentration 200μg / m3The catalytic filter tube 4 catalyzed the active component including manganese oxide and vanadium oxide, the mass content of the catalytic active component is 1%, when the pulse power supply voltage is set to 20 kV, test the concentration of the exhaust gas outlet, calculated Particle removal efficiency of 99.5%, VOCS removal efficiency 65%, HG0Removal efficiency is 51.6%.

Example Embodiment

[0045]Example 3

[0046]The amount of simulated smoke is 200m3 / h, flue gas temperature 350 ° C, filter rate 1.2m / min, flue gas particulate concentration 500mg / m3, VOCS concentration 200mg / m3Hg0Concentration 200μg / m3The catalytic filter tube 4 catalytically active components comprise a manganese oxide and vanadium oxide, the mass content of the catalytic active component is 1%, when the pulse power supply voltage is set to 100 kV, test the concentration of the exhaust air outlet, calculate The particulate removal efficiency of 99.5%, VOCS removal efficiency 75%, Hg0Removal efficiency is 70.3%.

[0047]Table 1 Example 1-3 Process Control Parameters and Effects

[0048] index Example 1 Example 2 Example 3 Power supply voltage (kV) 020100 Filter rate (m / min) 1.21.21.2 Active component component of catalytic filter tube Manganese oxide and vanadium oxide Manganese oxide and vanadium oxide Manganese oxide and vanadium oxide Active component content (%) 111 Particulate removal effic...

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Abstract

The invention relates to a pulse charge intensification-filtration catalysis integrated flue gas purification device and a method.The device comprises a gas inlet flue, a flue pulse discharger, a catalysis and filtration integrated reactor and a gas outlet flue; the gas inlet flue is arranged on the lower middle portion of the catalysis and filtration integrated reactor, the flue pulse discharger is arranged in the gas inlet flue, and an ash hopper, a flue gas turbulence device, a catalytic filter pipe, a blowback air pipe and a top catalytic reaction layer are respectively arranged in the catalysis and filtration integrated reactor from bottom to top. The invention further provides a flue gas purification method using the device, and the flue gas purification method comprises the steps of (1) pulse charging, (2) coagulation, (3) filtration catalysis and (4) NH3 decomposition. The flue gas purification device has the advantages that PM2.5, NOx, VOCs, heavy metal mercury and other pollutants can be removed at the same time, filtration resistance is reduced, membrane holes are prevented from being blocked, NH3 escape is effectively controlled, and the ultra-low emission and environment-friendly emission requirements are met.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an integrated flue gas purification device and method of pulse charging enhancement-filtration and catalysis. [0002] technical background [0003] With the completion of the ultra-low emission transformation of the coal power industry, the non-power industry will become a key area of ​​air pollution control in the future. Major non-electric industries such as steel, glass, and coking will emit a large amount of dust and NO x , due to the complex working conditions and components of the flue gas, the traditional treatment process has problems such as poor adaptability, high energy consumption, long process, and high investment and operation costs when dealing with this type of flue gas. Therefore, the development of adaptable and economically feasible integrated technology for ultra-low emission of industrial flue gas has become the main development direction of...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/32B01D50/00B01D51/02B01D53/56B01D53/44B01D53/64
CPCB01D50/00B01D51/02B01D53/323B01D53/8625B01D53/8634B01D53/8665B01D53/8687B01D53/869B01D2259/818
Inventor 刘伟白永刚杨振亚涂勇
Owner 江苏省环境工程技术有限公司
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