How can hydrogen sulfide be prevented? How hydrogen sulfide is removed

Jiangsu Zhongming Environmental Protection Technology Co., Ltd. is an environmental engineering company engaged in industrial waste gas on-site research, technology research and development, process customization, equipment manufacturing, project site construction and installation, operation and maintenance. At present, the company has 8 branches in the country, including four standard production plants, which are located in Suzhou, Langfang, Hebei and Shenyang, with a total production area of more than 42,000 square meters. The company has more than 10 years of experience in environmental protection equipment manufacturing, and now has a scientific quality management system and passed the ISO9001-2008-14001-18040 quality management system and the EU CE certification.

The core products are catalytic combustion equipment, photo-oxygen catalytic equipment, RTO, RCO, activated carbon adsorption equipment, condensation ** and low-temperature plasma equipment, etc., and the successful implementation of waste gas treatment projects of hundreds of factories has left a good mouth in the field of VOCs waste gas treatment

There are three most commonly used methods for the removal of hydrogen sulfide from <> gases:

1. Absorption method: if the main component of the gas is insoluble in water and not acidic gas, it is feasible to absorb it with water or lye;

2. Metal oxide method: If the air flow needs to maintain the temperature and cannot pass through the water, it must be removed by other methods. In general, in the temperature range of 200 to 600 degrees Celsius, many metal oxides can remove H2S, such as all alkali metal and alkaline earth metal oxides, very transition metal oxides, can remove H2S under reducing conditions.

and regenerated by sulfide decomposition in the temperature range of 600 to 700 degrees Celsius;

3. Adsorption method: near room temperature, activated carbon can be used for adsorption.

Taking the special antidote dithio-propanol, it can combine with poisons to form non-toxic after entering the human body.

Substance. To prevent and control hydrogen sulfide gas poisoning, it is necessary to prevent hydrogen sulfide gas from escaping and accidents in the production process. The hydrogen sulfide gas produced in the workshop should not be directly discharged into the surrounding atmosphere, and purification measures should be taken to avoid affecting the health of residents and the growth of crops.

In case of acute poisoning accident, the patient should be moved to a place with fresh air quickly, and attention should be paid to quiet and warmth. Artificial respiration is given to people with apnea. When rescuing poisoned patients in deep ditches, pools, troughs, etc., the rescuers must wear oxygen masks and waist seat belts (or ropes) and have special supervision, so as to avoid poisoning and delaying the treatment of patients.

Hydrogen sulfide treatment is the waiter: ** lack of noise, use of stagnation or harmless treatment of hydrogen sulfide.

Summary. Dear, I'm glad to answer for you, hydrogen sulfide can be absorbed with sodium carbonate, the gas containing hydrogen sulfide and the sodium carbonate solution are in countercurrent contact in the absorption tower, and the reaction produces sodium bicarbonate and sodium hydrosulfide: the absorption liquid is sent to the regeneration tower and heated with steam under reduced pressure.

The concentration of hydrogen sulfide in the gas released from the top of the tower can reach more than 80%, which is used to make sulfur or sulfuric acid. The sodium carbonate solution obtained at the bottom of the column is recycled.

Dear, I'm glad to answer for you, hydrogen sulfide can be absorbed with sodium carbonate, the gas containing hydrogen sulfide and the sodium carbonate solution are in countercurrent contact in the absorption tower, and the reaction generates sodium bicarbonate and sodium hydrosulfide: the absorption liquid is sent to the regeneration tower empty-handed, and heated with steam under decompression conditions. The concentration of hydrogen sulfide in the gas released from the top of the tower can reach more than 80%, which is used to make sulfur or sulfuric acid.

The sodium carbonate solution obtained at the bottom of the tower is recycled.

Hello! How to get rid of the liquid that smells of hydrogen sulfide.

Hydrogen sulfide is an inorganic compound with the chemical formula "Hs". Under normal circumstances, hydrogen sulfide is a colorless, flammable acid gas, and the smell is like rotten eggs at low concentrations, and there is no odor when it is high concentration. Hydrogen sulfide is also considered a toxic gas, and inhalation of small amounts of high concentrations of hydrogen sulfide can be fatal in a short or bright time.

If there is hydrogen sulfide in the solution, hydrogen sulfide can be oxidized into elemental sulfur and removed by oxidants such as hydrogen peroxide, ferric chloride solution, and potassium permanganate solution.

It doesn't taste like that.

Precautions to be taken in everyday work and life:

1.Crime safety and publicity work in ordinary times.

2.Respiratory protection: Wear a transitional gas mask when the concentration in the air exceeds the standard. In case of emergency rescue or evacuation, it is recommended to wear oxygen respirators or air respirators.

3.Eye protection: Wear chemical safety glasses.

4.Body protection: Wear anti-static overalls.

5.Hand protection: Wear chemical-resistant gloves.

6.Others: Smoking, eating, and drinking are strictly prohibited on the work site. After the work is done, the shower changes. Change your work clothes in a timely manner. Operators should learn to help themselves and each other. Persons must be supervised when entering tanks, confined spaces, or other high-concentration areas.

7.In the event of acute hydrogen sulfide poisoning, the patient should be quickly moved to a place with fresh air, the apnea should be given artificial respiration, and the patient should be taken to the hospital as soon as possible.

Content from the user: Wind Forest Network Database.

Hydrogen sulfide gas is usually removed by precipitation, and the method used to remove hydrogen sulfide gas in general laboratories is to pass hydrogen sulfide gas into copper sulfate solution to form copper sulfide that is insoluble in general strong acids (non-oxidizing acids). cuso4+h2s=cus↓+h2so4

1. Hydrogen sulfide ionizes H+ in solution, which is acidic and can be absorbed by reacting with alkaline substances, such as:

h2s+2naoh=na2s+2h2o

2. The S atom in hydrogen sulfide is -2 valence, which is the lowest valency of S, has reducibility, and can be removed by reaction with oxidizing substances, such as: 2H2S + SO2 = 3S + 2H2O

3. Many sulfides are insoluble solids in water, and S2- ions can be precipitated with salt solutions, such as:

CuSO4 + H2S = Cus (black precipitation) + H2SO4 specific method to choose depends on the actual situation.

Hydrogen sulfide pollutes the air and is an acidic gas, which can be absorbed with an aqueous solution of sodium hydroxide.

NaOH absorption, industrial production of Na2S

Na2S is a chemical raw material called odorous alkali.