Cleaning device for ammonia-containing waste gas

An exhaust gas purification device and exhaust gas technology are applied in the direction of gas treatment, air quality improvement, chemical instruments and methods, etc., which can solve the problems of secondary pollution, weak biological treatment capacity, and few manufacturers, and achieve high purification efficiency and good quality. The effect of economy and simple structure

Inactive Publication Date: 2016-04-06
华文蔚
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  • Application Information

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Problems solved by technology

The latter decomposition method mainly decomposes ammonia into nitrogen and hydrogen through the action of a catalyst. However, the processing cost of this method is relatively high, and there are not many manufacturers using it.
It is understood that some companies currently use the second-stage spray absorption method of clear water to absorb waste ammonia gas, and then use denitrification tec

Method used

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  • Cleaning device for ammonia-containing waste gas

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with the accompanying drawings. attached figure 1 middle:

[0008] 1 - heater;

[0009] 2 - cyclone separator;

[0010] 3 - condenser;

[0011] 4 - absorption tower;

[0012] 5-absorbing liquid tank;

[0013] 6- packing layer;

[0014] 7-spray layer;

[0015] 8-circulation pump.

[0016] see figure 1 , an ammonia-containing exhaust gas purification device, including a heater 1 connected in sequence, a cyclone separator 2, a condenser 3, and an absorption tower 4. The ammonia-containing exhaust gas first enters the heater 1, then enters the separator 2, and the condenser 3. The absorption tower 4 is removed from the top of the absorption tower. The height and diameter ratio of the absorption tower is 10:1. The absorption tower includes an absorption liquid tank 5 at the bottom, and a spray layer 7 at the top of the tower. The spray layer There are three layers in total, the lower part of the s...

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Abstract

The invention relates to a cleaning device for ammonia-containing waste gas. The cleaning device comprises a heater, a cyclone separator, a condenser and an absorption tower which are connected in order. The ammonia-containing waste gas is firstly fed into the heater, then is fed into the separator, the condenser and the absorption tower in order, and is discharged from the tower top of the absorption tower. The ratio of the height to the diameter of the absorption tower is 10:1. The adsorption tower comprises an adsorption liquid tank at the bottom, and three spraying layers at the upper part of the absorption tower. Filler layers are disposed below the spraying layers. The ratio of the total thickness of the spraying layers to the total thickness of the filer layers is 1:6.3. Raschig rings are adopted as a filler in the filler layers. A circulating pump is connected to the absorption liquid tank (5) and the spraying layers. A sulfur acid solution is adopted as an absorption liquid. The cleaning device is suitable for cleaning ammonia-containing waste gas produced in a fertilizer production workshop and is high in cleaning efficiency, simple in structure, easy to operate and good in economical efficiency.

Description

technical field [0001] The invention relates to the field of factory waste gas purification, in particular to a purification device for ammonia-containing waste gas in a fertilizer plant. Background technique [0002] Fertilizer production workshops produce a large amount of ammonia-containing waste gas, which causes stench near the factory and is one of the root causes of environmental degradation. Usually, the treatment methods of ammonia-containing waste gas are: absorption method and decomposition method. The former is mainly to absorb ammonia-containing waste gas with water or dilute acid solution (sulfuric acid or hydrochloric acid) to convert it into ammonia water, ammonium sulfate or ammonium chloride. Due to the restriction of the use of ammonia water, most enterprises adopt dilute sulfuric acid solution absorption method and concentrate by evaporation 1. Cooling and crystallization to separate ammonium sulfate crystals as raw materials for the production of compou...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/58B01D53/96B01D45/12B01D53/00
CPCB01D45/12B01D53/002B01D53/58B01D53/96B01D2251/506B01D2257/406Y02A50/20
Inventor 华文蔚
Owner 华文蔚
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