【Daily Question】May 4, 2016
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To increase the popularity of the purified area, a \"One Question per Day\" campaign was launched to foster an active atmosphere for technical exchanges while offering members certain financial rewards. (Fellow sea friends, if you have any good questions, feel free to send them to me; let’s work together.) 【Daily Question】 (Fill-in-the-blank) The characteristics of safe production in chemical enterprises are ( )( )( ). Please reply with your answers in the comments; participating in this quiz earns you +2 wealth points. If you answer all questions correctly, you’ll receive an additional +3 to +8 wealth points. Those who provide thorough analyses and explanations for the questions—or detailed calculation processes—will receive extra wealth points as a reward. If your answers are correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. High temperature and pressure, toxic and harmful, flammable, explosive, and corrosive.
High temperature and pressure, toxic and harmful, flammable, explosive, and corrosive
Characteristics of safe production in chemical enterprises: (high temperature and pressure), (toxic and harmful substances), (flammable, explosive, and corrosive materials)
High temperature and pressure, toxic and harmful, flammable, explosive, and corrosive
High temperature and pressure, toxic and harmful, flammable, explosive, and corrosive
Flammable and explosive, toxic, prone to high temperature and pressure, susceptible to corrosion
(1) High hazard of materials: **In the chemical production process, raw materials, semi-finished products, by-products, finished products, and waste materials mostly possess hazardous properties such as flammability, explosiveness, toxicity, and harmfulness**; they are chemicals with such risks. **The hazardous properties of chemicals mean that if proper precautions are not taken during their production, explosions, fires, acute poisoning (asphyxiation), chronic poisoning (occupational diseases), chemical burns, as well as noise and dust-related issues (occupational diseases) can occur. (II) The chemical processes are complex: reactions such as oxidation, reduction, hydrogenation, nitration, hydrolysis, sulfonation, and amination. Complex process: It involves multiple chemical unit operations such as reaction, transfer, filtration, evaporation, condensation, distillation, purification, adsorption, drying, and crushing. Automation control is complex: DCS, ESD/FSC, SIS, PLC, etc. Maintenance tasks are complex: accidents such as electric shock, radiation exposure, falls from heights, and mechanical injuries can easily occur. (III) High temperature and high pressure (low temperature and vacuum) The pressure used in ammonia synthesis can reach 32 Mpa. The pressure in high-pressure polyethylene production is 300 Mpa. In the ethylene production process, the temperature in the cracking furnace can reach up to 1200 degrees Celsius. For the deep cryogenic separation of ethylene, the temperature must be reduced to minus 167 degrees Celsius. Dangers associated with high pressure. Dangers associated with high temperature. (IV) Concentrated sources of hazard: potential dangers, conditions for their occurrence, and triggering factors. (V) Continuous operation Operators are prone to drowsiness at night. The north is prone to freezing in winter ； Materials stored in summer are exposed to high temperatures. Long-term continuous production can easily lead to the accumulation of wear and corrosion in the equipment.
There are many flammable, explosive, toxic, and harmful substances
High temperature and high pressure, many hazardous sources, complex processing processes
The characteristics of safe production in chemical enterprises include high hazard levels of materials, complex process flows, concentrated sources of potential danger, existing conditions and triggering factors, as well as high temperatures and pressures (low temperatures and vacuum), along with continuous operation
The characteristics of safe production in chemical enterprises are (high temperature and pressure), (toxic and harmful substances), and (flammable, explosive, and corrosive materials).