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A resource-based treatment method for plasma purification of air containing hydrogen sulfide and ammonia pollution

A plasma and air pollution technology, applied in separation methods, gas treatment, chemical instruments and methods, etc., can solve the problems of high operating costs, secondary pollution, and difficult purification, so as to reduce operating costs and eliminate secondary pollution. Effect

Active Publication Date: 2020-10-16
杭州兴洋环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the existing methods for treating polluted air containing hydrogen sulfide and ammonia have high operating costs, are difficult to completely purify, and are likely to cause secondary pollution, the present invention provides a method for plasma purification containing hydrogen sulfide and ammonia pollution. The air resource treatment method converts hydrogen sulfide and ammonia in the polluted air into ammonium sulfate aerosol, purifies the polluted air and does not produce secondary pollution, and the ammonium sulfate aerosol produced can be used as fertilizer to achieve resource utilization Purpose, reduce the operating cost of the equipment

Method used

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  • A resource-based treatment method for plasma purification of air containing hydrogen sulfide and ammonia pollution
  • A resource-based treatment method for plasma purification of air containing hydrogen sulfide and ammonia pollution
  • A resource-based treatment method for plasma purification of air containing hydrogen sulfide and ammonia pollution

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Embodiment 1

[0029] Such as figure 1 with figure 2 Shown is an example of the process of oxidizing hydrogen sulfide based on dielectric barrier discharge and reacting with ammonia to produce ammonium sulfate.

[0030] (1) The polluted air containing hydrogen sulfide and ammonia enters the membrane separator for separation.

[0031] (2) The polluted air containing hydrogen sulfide enters the corona discharge plasma device, the plasma energy density is 0.2J / L, the reaction time is 1s, and the reaction temperature is -10°C, so that the hydrogen sulfide in the range of 100ppm becomes sulfur-containing oxides .

[0032] (3) Introduce the produced sulfur-containing oxides and the ammonia in the ammonia-contaminated air and the moisture in the ammonia-contaminated air after the treatment in step 1) into the catalytic oxidation device. The reaction temperature is -20°C and the reaction time is 2s. , The pressure is 0.3bar, and the ammonia gas in the catalytic oxidation device reacts with sulfur-contain...

Embodiment 2

[0036] (1) Polluted air containing hydrogen sulfide, ammonia, and ozone enters the condenser separator for separation.

[0037] (2) The polluted air containing hydrogen sulfide and ozone enters the dielectric barrier discharge device, and 5g spherical titanium oxide is added. The plasma energy density is 5J / L, the reaction time is 5s, and the reaction temperature is 55°C, so that the hydrogen sulfide in the range of 200ppm becomes Sulfur oxides.

[0038] (3) Introduce the produced sulfur-containing oxides and the ammonia in the ammonia-contaminated air and the moisture in the ammonia-contaminated air after the treatment in step 1) into the thermodynamic combustion device. The reaction temperature is 30°C, and the reaction time is 10s. At a pressure of 1 bar, the ammonia gas in the thermodynamic combustion device reacts with sulfur-containing oxides to produce ammonium sulfate aerosol, and the polluted air is purified into purified air.

[0039] (4) The purified air and ammonium sulf...

Embodiment 3

[0041] (1) Polluted air containing hydrogen sulfide, hydrogen peroxide and ammonia enters the pressure swing separator for separation.

[0042] (2) The polluted air containing hydrogen sulfide and hydrogen peroxide enters the arc discharge device, and 8g spherical zinc oxide is added, the plasma energy density is 10J / L, the reaction time is 10s, and the reaction temperature is 100℃, so that the hydrogen sulfide in the range of 500ppm becomes Sulfur oxides.

[0043] (3) Introduce the generated sulfur-containing oxides and the ammonia in the ammonia-contaminated air and the moisture in the ammonia-contaminated air after the treatment in step 1) into the plasma oxidation device. The reaction temperature is 80°C and the reaction time is 20s. , The pressure is 2bar, the ammonia gas in the plasma oxidation device reacts with sulfur-containing oxides to produce ammonium sulfate aerosol, and the polluted air is purified into purified air.

[0044] (4) The purified air and ammonium sulfate a...

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Abstract

The invention relates to a resourceful treatment method for purifying contaminated air containing hydrogen sulfide and ammonia gas by plasma. The method is characterized by comprising steps as follows: 1), hydrogen sulfide and ammonia gas are separated in a separator; 2), air containing hydrogen sulfide, treated in the step 1), is introduced into a plasma device and subjected to an oxidizing reaction, sulfur oxide is obtained, the sulfur oxide and air containing ammonia gas obtained by treatment in the step 1) are introduced into a chemical synthesis chamber, ammonia gas and sulfur oxide in the chemical synthesis chamber are subjected to a reaction to produce ammonium sulfate aerosol, and the contaminated air is purified into purified air; 3), a mixture of the ammonium sulfate aerosol treated in the step 2) and the purified air is introduced into a separating chamber, and the ammonium sulfate aerosol and the purified air are separated. According to the method, hydrogen sulfide and ammonia gas in the contaminated air are converted into the ammonium sulfate aerosol, no secondary pollution is produced while the contaminated air is purified, the produced ammonium sulfate aerosol can beused as chemical fertilizer, so that the recycling purpose is achieved, and the operating cost of equipment is reduced.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection-exhaust gas purification, and specifically relates to a resource treatment method for plasma purification of air polluted by hydrogen sulfide and ammonia gas. Background technique [0002] The polluted air containing hydrogen sulfide and ammonia mainly comes from the fermentation process of animal and plant carcasses and the fermentation process of animal excrement. The polluted air containing hydrogen sulfide and ammonia discharged into the atmosphere not only harms human health and causes respiratory diseases, but also pollutes the atmospheric environment, triggering secondary aerosols and causing haze. At present, the main methods used to treat polluted air containing hydrogen sulfide and ammonia include chemical absorption, catalytic oxidation, adsorbent adsorption, and biodegradation. These methods are suitable for dealing with low-concentration and high-volume hydrogen sulfide an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/22B01D53/32B01D53/86B01D53/58B01D53/52B01D50/00C01C1/24
CPCB01D50/00B01D53/228B01D53/32B01D53/8612B01D53/8634B01D2258/06B01D2259/818C01C1/24Y02A50/20Y02A50/2351
Inventor 章旭明王百根高宏波
Owner 杭州兴洋环保科技有限公司