Health hazards in the polysilicon production process
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The main hazards come from the leaked silicon tetrachloride and silicon trichlorohydride. . And HCL. . HCL directly damages the lungs. . . Silicon tetrachloride, trichlorosilane; can cause skin damage. . Respiratory tract. . Hair loss. . . There’s also chlorine gas. There’s no need to say anything about this. . There’s also HF. . But only a few positions involve exposure to it. . . .
Injuries in chemical enterprises are inevitable.
The key lies in the designs and measures related to safety and environmental protection; proper implementation can minimize potential hazards.
Trichlorosilane is a flammable substance when exposed to moisture; it is highly volatile, reacts with oxidizing agents, burns violently when in contact with open flames, and releases toxic fumes containing chlorides upon heating. It decomposes in water to produce SiO2 and toxic and corrosive hydrogen chloride. The synthesis of SiHCl3 is carried out at temperatures of 280°C–300°C, which are above the auto-ignition temperature of 175°C; therefore, if air or other substances leak into the reactor or storage tanks, it can easily lead to fires, explosions, or poisoning incidents. It has a strong irritant effect on the eyes and respiratory mucosa; at high concentrations, it can cause corneal opacity, respiratory inflammation, and even emphysema, accompanied by symptoms such as headache, dizziness, nausea, vomiting, and palpitations. If it splashes on the skin, it can cause tissue necrosis and ulcers that fail to heal over time. Skin contact: Immediately remove contaminated clothing and rinse with plenty of flowing water for at least 15 minutes. Seek medical attention promptly if necessary. Eye contact: Immediately lift the eyelids and rinse thoroughly with flowing water or saline for at least 15 minutes. Seek medical attention promptly. Inhalation: Quickly move to an area with fresh air, keep the airways unobstructed, and provide oxygen promptly if breathing is difficult. When breathing stops, perform artificial respiration immediately. Seek medical attention.
Any industry can be harmful to the human body: agriculture has pesticides, fertilizers, sunlight, and so on； There’s no need to mention industry ； The service industry is mentally exhausting——as long as I choose to keep living as a human, I have to deal with this; there’s no way around it!
With proper safety measures and proper work procedures, it can still be avoided; one can’t just stop working because of this
Pay attention to safety measures, watch what you eat, and ensure you get enough nutrition.