I. Styrene
1, storage: sealed and cool. Long-term storage and mass storage are not recommended. Inventory temperature ≤30℃.
2. Precautions for operation: The closed operation is well ventilated, and the operator should protect the parts that are in direct and indirect contact with styrene: the operator should wear a filter gas mask (half mask), chemical safety glasses, gas-proof work clothes and rubber oil-resistant gloves. Stay away from kindling and heat sources, and smoking is strictly prohibited in the workplace. Pay attention to handling with care.
3. Fire extinguishing methods: fire extinguishing agent, foam, dry powder, carbon dioxide and sand. Fire extinguishing with water is ineffective.
Second, acetone.
1. storage: sealed and cool. Storage temperature ≤29℃.
2. Precautions for operation: The closed operation is well ventilated to reduce the contact and inhalation between skin and acetone. Operators wear filter gas masks (half masks), chemical safety glasses and butyl rubber gloves.
3. Fire extinguishing methods: fire extinguishing agent, soluble foam, dry powder, carbon dioxide and sand. Fire extinguishing with water is ineffective.
Third, industrial methyl ethyl ketone
1. storage: methyl ethyl ketone shall not be exposed to the sun, and shall be isolated from kindling, and flammable and toxic hazards shall be marked on the barrel.
2. Precautions for operation: Smoking is prohibited in a closed operation and well-ventilated workplace. Pay attention to personal hygiene. Avoid long-term repeated contact. Wear safety glasses, self-priming filter gas mask, anti-static work clothes and latex gloves when necessary.
3. Fire extinguishing methods: anti-soluble foam, dry powder, carbon dioxide and sand. Fire extinguishing with water is ineffective.
Four. diacetylmethane
1, storage: sealed storage at low temperature, away from open flames or oxidants.
2. Precautions for operation: The closed operation is well ventilated, and there can be no open fire at the work site. Wear safety glasses, self-priming filter gas mask, anti-static overalls and latex gloves when working.
3. Fire extinguishing methods: fire extinguishing agent, atomized water, foam, dry powder, carbon dioxide and sand. Firefighters must wear gas masks and full-body fire suits to put out the fire in the upwind direction.
Verb (abbreviation of verb) dimethylaniline
1. Storage: Store in a cool and ventilated place away from kindling and heat sources.
2. Precautions for operation: Close the operation and provide sufficient local exhaust. Operators must be specially trained and strictly abide by the operating procedures. Operators are advised to wear filter gas masks (half masks), chemical safety glasses, gas permeable work clothes and rubber oil-resistant gloves. Avoid contact with acids and halogens. When handling, handle with care to prevent the packaging and containers from being damaged.
3. Fire extinguishing method: use atomized water, foam, carbon dioxide, dry powder and sand to extinguish the fire.
How to recycle waste chemical raw materials
I. Physical therapy
Physical treatment is to change the structure of waste chemical raw materials through concentration or phase change, making them into a form convenient for transportation, storage, utilization and disposal. Physical treatment methods include compaction, crushing, sorting, concentration, adsorption and extraction. Physical treatment is often used as an important means to recover useful substances from waste chemical raw materials.
Second, chemical treatment.
Chemical treatment is to use chemical methods to destroy harmful components in waste chemical raw materials to achieve harmlessness, or to transform them into forms suitable for further treatment and disposal. Due to the complex chemical reaction conditions and many influencing factors, chemical treatment methods are usually only used for waste treatment with a single component or several similar chemical components. For mixed waste, chemical treatment may not achieve the expected purpose. Chemical treatment methods include oxidation, reduction, neutralization, chemical precipitation and chemical dissolution. Some hazardous waste chemical raw materials may produce residues rich in toxic components after chemical treatment, and these residues must be detoxified or safely disposed of.
Third, biological treatment.
Biological treatment is to use microorganisms to decompose degradable organic matter in waste chemical raw materials to achieve harmless and comprehensive utilization. After biological treatment, the volume, shape and composition of waste chemical raw materials have changed greatly, which is convenient for transportation, storage, utilization and disposal. Biological treatment methods include aerobic treatment, anaerobic treatment and facultative anaerobic treatment. Compared with chemical treatment methods, biological treatment is generally cheaper and more widely used, but the treatment process takes a long time and the treatment efficiency is sometimes unstable.
Fourthly, heat treatment.
Heat treatment is to destroy and change the composition and structure of waste chemical raw materials through high temperature, and at the same time achieve the purpose of reduction, harmlessness or comprehensive utilization. The method includes incineration, pyrolysis, wet oxidation, roasting and sintering. The waste chemical raw materials with high calorific value or high toxicity are treated harmlessly by incineration process, and the waste heat of incineration is recovered for comprehensive utilization, staff bathing and life, so as to reduce the treatment cost and energy waste.
Curing treatment of verbs (abbreviation of verb)
Solidification treatment is to fix or coat waste chemical raw materials with solidified base materials to reduce their harm to the environment. It is a relatively safe treatment process for transporting and disposing of wastes, mainly used for hazardous wastes and radioactive wastes. The volume of solidified body is much larger than that of original waste.