Method for processing malodorous gas and device thereof

A malodorous gas and treatment device technology, which is applied in the field of deodorizing devices for malodorous gas, can solve the problems of secondary pollution, large amount of absorbent, and high operating cost, and achieve the effects of convenient recycling, easy processing, and increased adsorption area

Active Publication Date: 2012-08-22
NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can remove odorous pollutants with relatively simple components. The waste adsorbent generated during the treatment process is hazardous waste, which will cause secondary pollution, and the amount of absorbent used is large, and the operating cost is high.
[0004] The Chinese patent with the publication number CN101804296A discloses a deodorizing device and method for malodorous gas, using potassium permanganate as an oxidant, and adopting a two-stage spray oxidation method to remove the malodorous gas from the stacking bin in the early stage of domestic waste incineration treatment. However, this method is suitable for the treatment of low-concentration malodorous gases, and the treatment efficiency of organic malodorous gases is extremely low, and it is easy to cause secondary pollution after treatment.

Method used

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  • Method for processing malodorous gas and device thereof
  • Method for processing malodorous gas and device thereof
  • Method for processing malodorous gas and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The device for dealing with malodorous gas has a structure such as figure 1 shown. Depend on figure 1 It can be seen that the treatment includes a gas collection device (1), a deodorization tower, an oxidant supply device (9) and an oxidant treatment device (10), wherein the deodorization tower includes a main body (5) and is located below the deodorization tower main body (5) The air inlet (4) and the oxidant inlet (8) above the deodorizing tower main body (5) and the gas outlet (7) arranged on the top of the deodorizing tower and the oxidizing agent outlet (3) at the bottom of the deodorizing tower; The collection device (1) communicates with the air inlet (4), the oxidant supply device (9) communicates with the oxidant inlet (8), and the oxidant treatment device (10) communicates with the oxidant outlet (3). In order to increase the adsorption area of ​​the main body (5) of the deodorization tower, two vertical packing layers (6) are arranged on the main body (5). ...

Embodiment 2

[0028] The method for dealing with malodorous gas, the specific steps are as follows:

[0029] Start the gas collection device (1) to collect the malodorous gas emitted during the synthesis of methionine. The gas contains hydrogen sulfide, carbon disulfide, methyl mercaptan, methyl sulfide, acrolein and ammonia; The air inlet (4) of the inlet feeds the collected malodorous gas, starts the oxidant supply device (9) simultaneously, feeds the oxidant from the oxidant inlet (8) at the top of the deodorizing tower to the deodorizing tower, so that the malodorous gas and oxidizing agent passed into The main part (5) of the deodorizing tower undergoes a chemical reaction, and the reacted gas is discharged from the gas outlet (7), and the reacted oxidant is collected at the bottom of the deodorizing tower and passed into the raffinate treatment device (10) through the oxidant outlet (3). .

[0030] The oxidizing agent used in this embodiment is Fenton's reagent, which is prepared by ...

Embodiment 3

[0052] The method for dealing with malodorous gas, the specific steps are as follows:

[0053] According to the same method as Example 2, the malodorous gas is deodorized, and the difference is that the oxidizing agent used is an acidic oxidant solution. In the deodorization tower with a packing layer of 3-5 different packing heights, the acidic oxidant solution The pH value of the solution adjusted to 4-6 with sulfuric acid from the acidic oxidant solution with a hydrogen peroxide mass fraction of 20 to 30%, as shown in Table 2:

[0054] The effect of table 2 acid oxidant treatment malodorous gas

[0055]

[0056] It can be seen from Table 2 that after the treated malodorous gas is oxidized and deodorized, the discharged gas can reach the second-level emission standard allowed by the state. The components are oxidized to non-polluting substances for the environment.

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Abstract

The invention discloses a method for processing malodorous gas and a device thereof. Malodorous gas is introduced from a gas inlet at the bottom of a deodorization tower through a gas collecting device, an oxidizing agent is introduced from an oxidizing agent inlet at the top of the deodorization tower through an oxidizing agent supplying device simultaneously, and the malodorous gas and the oxidizing agent are contacted and reacted at a main body portion of the deodorization tower. Gas after reaction is discharged through a gas outlet, and the oxidizing agent after reaction is collected at the bottom of the deodorization tower and is introduced into an exhaust liquid processing device through an oxidizing agent outlet. By means of the method, the deodorization efficiency is high, the processed gas can reach second-level emission standards allowed by the state, and the method can be used for processing waste gas in the chemical industries.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a deodorizing device and method for treating malodorous gas. Background technique [0002] In chemical synthesis, foul-smelling gases are unavoidably produced. If they are discharged directly without treatment, they will cause serious pollution to the environment. The discharge of malodorous gas stimulates the olfactory organs, causing people's unpleasantness and polluting the living environment. It enters the human body mainly through contact, breathing, water and food, and causes diseases of the respiratory system, circulatory system, digestive system, endocrine system, and nervous system. Long-term malodorous stimulation can cause people to feel tired. With the rapid development of modern social economy and modern industry, especially the chemical production industry, a variety of malodorous gases are produced in the production process, such as hydrogen sulfide, methyl merca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75
Inventor 罗玉成熊泽春杨平周明权甘永昌李宏斌王小勇杨勇刘邦林鞠远波黄宝玉
Owner NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
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