Activated-carbon regeneration-gas pretreatment system device and pretreatment process method

A technology for regenerating gas and system devices, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of difficulty in processing, difficulty in reusing SO2, and complex composition of activated carbon regeneration gas, and achieves simple process and compact structure. , easy-to-control effects

Pending Publication Date: 2018-07-17
JIANGSU DEYITONG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Activated carbon regeneration gas has complex components, except for high concentration of SO 2 In addition, usually contains NH 3 , HCl, HF, SO 3 , dust (mainly carbon powder), to SO 2 Reuse poses certain difficulties
[0005] The existing treatment process is: using water washing process to remove the NH in the flue gas 3 , HCl, HF, SO 3 , carbon powder is washed, and the wastewater is discharged regularly. Since the discharged wastewater is usually acidic, COD, and ammonia nitrogen content are extremely high, it causes great difficulties for subsequent treatment.

Method used

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  • Activated-carbon regeneration-gas pretreatment system device and pretreatment process method

Examples

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Embodiment 1

[0037] Embodiment 1: activated carbon regeneration gas pretreatment system device of the present invention, such as figure 1 As shown, the direction pointed by the arrow is the direction of the material; including the regenerative gas wet scrubbing system and the scrubbing liquid treatment system;

[0038] Wherein, the regenerated gas wet scrubbing system includes a wet scrubber 2, a scrubbing circulation pump 1, a scrubbing liquid discharge pump 3, a clear liquid pump 4, and a clear liquid tank 5; the scrubbing liquid treatment system includes a clarifier 6, a drain Mud pump 7, filter 8, ammonia stripper 9, brine discharge pump 10;

[0039] The wet scrubber 2 is respectively connected to the washing circulation pump 10, the washing liquid discharge pump 3, and the clear liquid tank 5, and the washing liquid discharge pump 3 is connected to the lower part of the wet scrubber 2, and the wet washing The upper part of the device 2 is connected with the clear liquid tank 5, the c...

Embodiment 2

[0059] The difference from Example 1 is that the outlet of the washing liquid discharge pump 3 is directly sent to the lower part of the ammonia stripper 7, and the bottom of the ammonia stripper 9 is connected with a brine discharge pump 10, and the brine is discharged through the brine discharge pump 10 for treatment.

[0060] The free ammonia separated by the ammonia stripper 9 is reused or sold as a by-product.

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Abstract

The invention provides an active carbon regeneration gas pretreatment system device and a pretreatment process method. The system device comprises a regeneration gas wet washing system and a washing solution treatment system, wherein the regeneration gas wet washing system comprises a wet washer, a washing circulation pump, a washing solution discharge pump, a clear liquid pump and a clear liquidtank, and the washing solution treatment system comprises a clarifier, a mud discharge pump, a filter, an ammonia stripper and a brine discharge pump; the wet washer is respectively connected with thewashing circulating pump, the washing liquid discharge pump and the clear liquid tank; the washing liquid discharge pump is connected with the lower part of the wet washer; the upper part of the wetwasher is connected with the clear liquid tank; the clear liquid tank is connected with the clear liquid pump; the washing liquid discharge pump is connected with the clarifier; the clarifier is connected with the filter through the mud discharge pump; and the clarifier is sequentially connected with the ammonia stripper and the brine discharge pump. According to the invention, the pretreatment ofactivated carbon regeneration gas is realized, clean high-concentration sulfur dioxide gas is obtained, and the effect of recovering ammonia is achieved at the same time.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an activated carbon regeneration gas pretreatment system device and a pretreatment process method. Background technique [0002] Activated carbon dry flue gas desulfurization and denitrification technology is an engineering treatment technology that uses activated carbon to simultaneously desulfurize and denitrify. Its treatment process is carried out in a reactor, which can achieve the treatment effect of desulfurization and denitrification in one step. This process can simultaneously remove SO in flue gas 2 , NOx, and can remove dioxins, heavy metals, dust and other pollutants, and the by-product SO 2 It can be processed into various sulfates, sulfites or sulfuric acid products, and has been successfully used in chemical industry, power plant, coking oven, non-ferrous smelting, steel sintering and pelletizing industries. [0003] Activated carbon dry flue gas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/18
CPCB01D53/1456B01D53/14B01D53/1418B01D53/1425B01D53/18
Inventor 陈任远徐延忠刘大华李明波李军民吴振山
Owner JIANGSU DEYITONG ENVIRONMENTAL PROTECTION TECH CO LTD
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