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Dry desulfurization and denitrification system adopting hollow fiber membrane dust collector

A dry desulfurization and fiber membrane technology, applied in the field of dry desulfurization and denitrification systems

Inactive Publication Date: 2020-12-15
GUANGDONG FENGHE PURIFICATION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] According to the discovery and theoretical derivation of the above-mentioned experiments, the purpose of the present invention is to propose an improvement plan for various problems of the existing SDS dry desulfurization + SCR low-temperature denitrification system

Method used

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  • Dry desulfurization and denitrification system adopting hollow fiber membrane dust collector
  • Dry desulfurization and denitrification system adopting hollow fiber membrane dust collector

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Experimental program
Comparison scheme
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Embodiment Construction

[0018] specific implementation

[0019] On September 7, 2020, the first half of the SDS dry desulfurization + SCR low-temperature denitrification system involved in the present invention was implemented in a medical waste treatment center in Guangdong, that is, only the dedusting and desulfurization part. The specific method is: use a hollow fiber membrane dust collector to switch and replace an online bag filter with the same air volume and pressure. The operating air volume of the bag filter is 4500---5000m³ / h, and the average pressure is 480pa; the bag used is a high-precision dust bag with PDFE substrate + PDFE film, with a diameter of 160mm, a total of 98 pieces; the dust filtration effect is 3 ---6mg / m³, SO 2 The average peak emission value is 30---50mg / m³, and the peak value is 110mg / m³.

[0020] The switch was completed from 13:40 to 13:47. After 10 minutes, the stack sensor measured SO 2 The average emission value dropped to 3---5mg / m³; HCL dropped from 30mg / m³ to...

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Abstract

The invention discloses a dry desulfurization and denitrification system adopting a hollow fiber membrane dust collector. The invention particularly relates to an improved form of an SDS dry desulfurization and SCR low-temperature denitration system. Substantially, a bag-type dust collector commonly used in an existing SDS dry desulfurization and SCR low-temperature denitration system is replacedwith the hollow fiber membrane dust collector, and due to the fact that the filtering precision is improved by 2-3 orders of magnitudes, the dry desulfurization and denitration efficiency is greatly improved, and a large number of catalysts are saved.

Description

technical field [0001] A dry desulfurization and denitrification system using a hollow fiber membrane dust collector. Especially an improved form of SDS dry desulfurization + SCR low temperature denitrification system. Background technique [0002] SDS dry desulfurization + SCR low-temperature denitrification system is an emerging comprehensive system technology for removing sulfur oxides, nitrogen oxides, and dust in flue gas. The main components are desulfurization agent supply device, bag filter, and SCR low-temperature denitrification device. CN208066118 U is exactly a typical this kind of system. Its working principle is that sodium-based fine powder such as sodium bicarbonate or calcium-based fine powder such as calcium carbonate, or both, are sprayed into the flue gas duct or reactor to mix the desulfurizer with the flue gas. It reacts with sulfide, hydrogen chloride, etc. in the flue gas. After that, the flue gas enters a bag filter. Due to the blocking of the bag,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/50B01D53/86B01D53/56B01D46/54B01D53/02
CPCB01D53/508B01D53/8625B01D46/543B01D53/02B01D2251/304B01D2251/404B01D2253/102B01D2257/70B01D2258/0283
Inventor 郭绍华程旭滨吴绍海
Owner GUANGDONG FENGHE PURIFICATION ENG CO LTD