Specifications

Basic information

Methanol (Methanol) is an organic compound commonly used as a solvent, antifreeze, fuel, or neutralizer. Methanol is a saturated monohydric alcohol with simple methanol system structure. CAS numbers are 67-56-1 and 170082-17-4, with 32.04 molecular weight and boiling point of 64.7 ℃. Methanol high volatility, colorless, flammable, toxic, drink 5~10 ml can be blind, a large number of drinking will lead to death. Methanol is usually produced by reacting carbon monoxide with hydrogen.

Application areas

1, one of the basic organic raw materials, used in the manufacture of methyl chloride, methylamine and dimethyl sulfate and other organic products. It is also a raw material for pesticides (insecticides, acaricides), pharmaceuticals (sulfonamides, oxytetracycline, etc.), and one of the raw materials for the synthesis of dimethyl terephthalate, methyl methacrylate and methyl acrylate.
2. The main application field of methanol is the production of formaldehyde. Formaldehyde can be used to produce adhesives, mainly used in the wood processing industry, followed by treatment agents for molding compounds, coatings, textiles and paper.
Another major use of methanol is the production of acetic acid. Acetic acid consumption accounts for about 7% of global methanol demand, which can produce vinyl acetate, acetate fiber and acetate, and its demand is closely related to the demand for coatings, adhesives and textiles.
4. Methanol can be used to manufacture methyl formate, which can be used to produce formic acid, formamide and other fine chemical products, and can also be used as insecticides, fungicides, fumigants, tobacco treatment agents and gasoline additives.
5, methanol can also produce methylamine, methylamine is an important aliphatic amine, liquid nitrogen and methanol as raw materials, can be separated by processing for monomethylamine, dimethylamine, trimethylamine, is one of the basic chemical raw materials.
6, can be synthesized as dimethyl carbonate, is an environmentally friendly products, used in medicine, agriculture and special industries.
7. It can be synthesized into ethylene glycol, which is one of the intermediate raw materials for petrochemical industry and can be used to produce polyester and antifreeze.
8, can be used in the manufacture of growth promoters. It can increase the yield of crops, keep the branches and leaves fresh, vigorous and flourishing, and will not wither in summer, and can greatly reduce irrigation water, which is conducive to the growth of dryland crops.
9. Methanol protein can be synthesized. Methanol protein produced by microbial fermentation with methanol as raw material is called the second generation of single cell protein. Compared with natural protein, it has higher nutritional value, and the crude protein content is much higher than fish meal and soybean. And it is rich in amino acids, minerals and vitamins, which can replace fish meal, soybean, bone meal, meat and skim milk powder.
10. Methanol is used as a cleaning and degreasing agent, MOS grade is mainly used for discrete devices, medium and large-scale integrated circuits, and BV-III grade is mainly used for ultra-large-scale integrated circuit technology.
11, used as analytical reagents, such as solvents, methylation reagents, chromatography reagents. Also used in organic synthesis.
Generally, methanol is a better solvent than ethanol and can dissolve many inorganic salts. It can also be blended with gasoline as an alternative fuel. Since the 1980 s, methanol has been used to produce gasoline octane additives such as methyl tert-butyl ether, methanol gasoline, methanol fuel, and methanol protein, which has promoted the development of methanol production and market demand.
Methanol is not only an important chemical raw material, but also an excellent energy and vehicle fuel. Methanol reacts with isobutylene to give MTBE (methyl tert-butyl ether), which is a high octane unleaded gasoline additive and can also be used as a solvent. In addition, it can also produce olefins and propylene to solve the problem of resource shortage.
14, methanol can be used in the production of dimethyl ether, dimethyl ether in addition to the daily chemical, pharmaceutical, pesticide, dyes, coatings and other aspects of a wide range of uses, but also has a convenient cleaning, high cetane number, good power performance, less pollution. Easy to pressurize as liquid, easy to store and other fuel properties. Methanol and dimethyl ether according to a certain proportion of the preparation of a new type of liquid fuel called alcohol ether fuel. Its combustion efficiency and thermal efficiency are higher than that of liquefied gas.

Packaging, transportation and safety

Operation:

Closed operation, strengthen ventilation. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that the operator wear a filtering gas mask (half mask), chemical safety goggles, anti-static overalls and rubber gloves. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent vapor leakage into the workplace air. Avoid contact with oxidants, acids, alkali metals. When filling, the flow rate should be controlled, and there is a grounding device to prevent static accumulation. Equipped with corresponding types and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances.

Storage:

Store in a cool, ventilated warehouse. Keep away from fire and heat source. The temperature of the warehouse should not exceed 30 ℃. Keep container sealed. It should be stored separately from oxidants, acids, alkali metals, etc., and mixed storage should not be avoided. Explosion-proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable containment materials. Suitable storage containers for methanol are stainless steel containers and plastic storage tanks. The plastic storage tanks are made of pure polyethylene (linear low-density polyethylene LLDPE, high-density polyethylene HDPE) as raw materials. The methanol plastic storage tanks are integrally formed by a special rotational molding process. It has the advantages of no welding, no leakage, no toxicity, light weight, anti-aging, impact resistance, corrosion resistance, integrated molding integrity, and long life. It can store and react most inorganic acids, alkalis, salt solutions and most organic solvents, and can partially replace stainless steel, titanium, nickel, high-grade alloy steel and other materials. The product conforms to the regulations on storage and transportation of dangerous goods. It is an ideal storage container for storing methanol and reactive chemical corrosion solution and clean solution. This product conforms to the national health standard, can replace the stainless steel container shipment food grade solution.

Inlet and outlet of methanol storage tank:

The inlet and outlet of methanol storage tank must use PE flange made of the same material as plastic storage tank as the outlet, so that leakage will not be caused by the interface of other materials.

Emergency treatment for leakage:

Quickly evacuate the personnel from the leakage pollution area to the safety area, isolate them and strictly restrict the access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and anti-static overalls. Do not touch the leak directly. Cut off the leak source as much as possible. Prevent from flowing into restricted spaces such as sewers and flood drainage ditches. Small amount of leakage: adsorption or absorption with sand or other non-combustible materials. It can also be washed with a large amount of water and diluted with washing water into the waste water system. Large leakage: build embankments or dig pits to contain. Cover with foam to reduce steam disasters. Transfer to tanker or special collector with explosion-proof pump, recycle or transport to waste treatment site for disposal.