PPE

1ntroduction of basic knowledge of organic solvent and protective measures

Organic solvents are organic compounds that dissolve oils, waxes, resins, rubbers and dyes. The forms of organic solvents in the production process are mostly liquid or vapor formed by evaporation of liquid, such as gasoline and gasoline vapor; Benzene, benzene vapor; Carbon disulfide, carbon disulfide vapor, etc< (1) as fuel, such as gasoline, kerosene and diesel, they are distributed in refineries and users (2) as raw material, styrene is used to produce polystyrene, styrene butadiene rubber and ABS engineering plastics, which are distributed in plastic factories, rubber factories, etc; Ethylene chloride is produced by cracking dichloroethane; Acetone reacts with chlorohydric acid to produce acetone cyanohydrin, etc (3) as additive, aviation kerosene is added with carbon disulfide, gasoline is added with methyl tert butyl ether, etc., which are distributed in refineries (4) used as extractant such as dimethylformamide to extract or extract butadiene, distributed in rubber plants. (5) used as solvent such as benzene, toluene, xylene, ethanol, butanol, distributed in various plants harm low concentration inhalation or contact of organic solvents may cause slight irritation to eyes and respiratory tract mucosa; When inhaled with higher concentration, the patients may be excited first, such as headache, dizziness, drunkenness, uncontrollable laughter, etc., and then they are tired, silent and indifferent; High concentration inhalation, soon from excitement to inhibition, coma, anesthesia performance is outstanding the petrochemical industry is highly automated and airtight, and the material transportation and reaction are all in containers (towers, tanks, tankers) or pipelines. However, in the production process, various machines, pumps, valves and other equipment sometimes run, emit, drip and leak, which can make people absorb or contact with organic solvents in a short time with high concentration, resulting in acute poisoning. 1n addition, there are also some open places for direct manual operation, such as sewage pool evaporation, feeding, quality analysis, sampling, adding additives, brushing oil tanks and tankers, loading and poking, etc. acute poisoning accidents can also occur, especially when the operating environment is special and the protective measures are not effective preventive measures 1. Replace benzene with non-toxic or low toxic substances, such as gasoline, diethanol formaldehyde, cyclohexane, toluene, xylene, etc. as thinner or adhesive in the paint and shoe industry; Ethanol is used as organic solvent or extractant2. Production process reform and ventilation and detoxification: the production process is closed, automatic and programmed; Local ventilation and detoxification equipment with sufficient effect should be installed and maintained regularly to keep the concentration of benzene in the air below the national health standard< 3. Personal protective measures: conduct regular labor hygiene investigation on benzene operation site to monitor the concentration of benzene in the air. Workers should strengthen personal protection and wear appropriate personal protective equipment, such as benzene proof gas mask. Conduct thorough pre employment and regular physical examination. During pregnancy and lactation, female workers must be transferred from benzene to avoid adverse effects on the fetus and infants copyright notice: This article is reproduced by 1nternet media, only representing the author’s point of view, and has nothing to do with this website. 1f the information column articles and comments violate your legal rights, please call to let us know and we will deal with them in time

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