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Method for sectional treatment of ammonia-containing waste gas

A segmented, waste gas technology, applied in separation methods, gas treatment, combustion methods, etc., can solve the problems of incomplete waste gas treatment and inability to treat polluted gas, and achieve the goal of improving purification effect, prolonging residence time, and improving filtration effect. Effect

Pending Publication Date: 2022-03-01
LIUZHOU HAIDA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment device can only purify the waste gas in one stage, and cannot further process the polluted gas adsorbed on the zeolite runner, so the treatment of the waste gas is not thorough

Method used

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  • Method for sectional treatment of ammonia-containing waste gas
  • Method for sectional treatment of ammonia-containing waste gas
  • Method for sectional treatment of ammonia-containing waste gas

Examples

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Effect test

Embodiment 1

[0039] A method for segmented treatment of ammonia-containing waste gas, comprising the following steps:

[0040] A, pre-filter treatment: pass ammonia-containing waste gas into the pre-filter device 1 for pre-filter treatment; the pre-filter device 1 includes a box body 16, a support frame 17, a filter plate assembly, a tray 24, and a water gun 25; The box body 16 is set on the support frame 17, the left side of the box body 16 is provided with an air inlet I18, and the right side is provided with an air outlet I19; the filter plate assembly includes a card slot 20, a slot 21, a filter plate 22. Card 23, pull ring 26; the card slot 20 is located at the top of the box body 16; the slot 21 is located at the bottom of the box body 16 and corresponds to the card slot 20; the filter plate 22 Insert the box body 16 from the slot 21, insert its upper end into the card slot 20, and its lower end surface is flush with the bottom of the box body 16; , the card 23 can rotate based on t...

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Abstract

The invention discloses a method for sectional treatment of ammonia-containing waste gas. The method comprises the following steps: A, pre-filtering treatment: pre-filtering the ammonia-containing waste gas; b, adsorption and desorption treatment: dividing the pre-filtered ammonia gas into a large part and a small part, performing ammonia adsorption concentration on the large part, and discharging the large part into the atmosphere; heating the small stream of gas through clean gas after ammonia adsorption, and then desorbing the adsorbed ammonia; c, catalytic combustion: introducing the desorbed concentrated ammonia-containing waste gas into a catalytic combustion device for catalytic combustion, stopping heating after combustion is started, and maintaining combustion of ammonia gas under heat generated by combustion; and D, heat recovery, wherein heat generated by catalytic combustion is recovered through a heat recovery device, and tail gas obtained after heat recovery is discharged into the atmosphere through a chimney. The ammonia-containing waste gas is treated by adopting a sectional treatment method, and the purpose of thoroughly removing pollutants in the ammonia-containing waste gas can be achieved.

Description

technical field [0001] The invention relates to the technical field of ammonia-containing waste gas treatment, in particular to a segmented method for treating ammonia-containing waste gas. Background technique [0002] As my country's environmental supervision continues to increase, compound fertilizer manufacturers are facing greater pressure on environmental protection. Harmful substances produced in the high-tower granulation process mainly include multi-element mixture dust composed of various raw material powders and ammonia gas decomposed by urea at high temperature. There are five methods of physical absorption, chemical absorption, catalytic decomposition, catalytic aerobic decomposition and biological degradation. [0003] The chemical absorption of ammonia takes advantage of the alkalinity of ammonia to react ammonia with acidic substances to produce low-addition nitrogen fertilizers. Since the recovered solvents are usually highly volatile and highly corrosive, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/12B01D46/88B01D53/06F23G7/07
CPCB01D46/12B01D53/06F23G7/07B01D2257/406
Inventor 宾峰
Owner LIUZHOU HAIDA NEW MATERIAL TECH
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