Industrial grade sodium bisulfiteAfter high-efficiency clarification and filtration in the production process, the sulfur pump is added to the sulfur incinerator.

1. It is used for the microanalysis and determination of tellurium and niobium and the preparation of developer, and is also used as a reducing agent.

2. After the air is compressed, dried and purified, it is burned with sulfur in the sulfur incinerator to produce SO2 gas (furnace gas).

3. The boiler gas is recycled by the cooling system of the waste boiler, and then we enter the enterprise desulfurization technology reactor to remove the sublized sulfur from the gas, obtain pure gas with SO2 content of 20.5%(volume), and enter an absorption tower.

4. The soda ash is made into lye with a certain mass concentration, and reacts with sulfur dioxide pollution gas to obtain sodium bisulfite solution.

5. Neutralize the sodium sulfite solution with caustic soda to obtain the sodium sulfite solution.

6, sodium sulfite solution can enter the concentrator, the use of double-effect continuous concentration process. The water was evaporated to obtain a suspension containing sodium sulfite crystals.

7. Put the qualified materials of the concentrator into the centrifuge for solid-liquid separation, and the solid (wet product sodium sulfite) enters the air dryer and is dried by hot air to obtain the finished product.

8. The mother liquor is reused in the mixed alkali tank for recycling.

　　Industrial grade sodium bisulfitePrecautions for use

Hazard Overview

Health hazard: Irritation to eyes, skin and mucous membranes.

Environmental hazards: harmful to the environment, can cause pollution to water bodies.

Explosion hazard: This product is not flammable and irritating.

First Aid

Skin-to-skin contact: Take off contaminated clothing and rinse with your own large amount of money running water.

Eye contact: Lift the eyelids and flush with running water or saline. Seeking medical attention.

Inhalation: Move from site to fresh air. If breathing is difficult, give oxygen. Seeking medical attention.

Intake: Drink enough warm water to induce vomiting. Seeking medical attention.

Methods of fighting fires

Hazardous characteristics: no special flammable and explosive characteristics. Decomposition by high heat produces toxic sulfide fumes.

Industrial grade sodium bisulfite harmful combustion products: sulfide.

Fire extinguishing method: firefighters need to wear full-body fire protection clothing and put out the fire in the windward direction. When extinguishing fire, move the container from the fire to an open area as far as possible.

Industrial grade sodium bisulfite emergency release treatment

Emergency information processing: isolate the leakage pollution area and restrict students' access. It is recommended that emergency personnel wear dust cover (full cover) and protective clothing. Avoid some dust, sweep carefully, put in a bag and move to a safe place on the net. It can also be rinsed with a large amount of water and diluted with washing water into the waste water system. If there is a need for a large amount of information to leak, cover it with plastic sheeting or canvas. Collected, recycled or transported to a waste disposal site for disposal.

Industrial grade sodium bisulfite handling and storage

Operation need to pay attention to safety matters: closed operation, strengthen ventilation. Operators need to be specially trained and strictly follow the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, anti-virus penetration overalls, and rubber gloves. Avoid creating dust. Avoid contact with acid. Light loading and unloading during transportation to prevent packaging damage. Equipped with leakage emergency treatment equipment. Empty containers can be a hazardous residue.

Precautions for storage: Store in a cool and ventilated warehouse. Keep away from fire and heat sources. Should be stored separately with acids, etc., not mixed. Not suitable for long-term storage. Suitable materials shall be provided for storage areas to control spills.