【Test Your Knowledge】Basic Chemical Engineering Knowledge (35)
Thread Content
For the convenience of others, please write down the answers directly; do not paste the original questions, otherwise no marks will be given. Thank you for your cooperation! 1. Common fire extinguishers include ___________, ______________, _______, and _______________. 2、In an alkaline solution with a concentration of 42%, we call the alkali _______ and water _______. 3. _______________________________ is called the density of an object. Using the formula _________, the unit is _________. 4. Gas compression machinery is classified according to its compression ratio into four categories: ___________, ________, __________, and ______________. 5. The \"terpenes\"__________, __________, ______________ produced by ethylene plants, along with the \"triphenyls\"_______, _________, __________, are basic raw materials for other organic substances and the \"three major synthetic materials\"_________________, __________________, ___________________. Among them, ethylene is mainly used to produce ___________. 6. During the maintenance and cleaning of three-phase asynchronous motors, it is not allowed to use ________ for cleaning, in order to prevent damage to ________. 7. Liquefaction is the process of converting _________ into _________. 8. During the heat exchange process, the _______ with a lower _______ of heat is called _______. 9. Strong electrolytes ______ in aqueous solutions, while weak electrolytes _____ in aqueous solutions. 10. In a centrifugal pump, the packing is compressed by the gland between _________ and _______, thereby achieving the purpose of _________. Answer key: 1 Foam fire extinguisher, Carbon dioxide fire extinguisher, 1211 fire extinguisher, Dry powder fire extinguisher. 2 Solute, Solvent. 3 The mass per unit volume of a substance; Density = Mass/Volume, kg/m3. 4 Compressor, Blower, Ventilator, Vacuum pump. 5 Ethylene, Propylene, Butadiene, Benzene, Toluene, Xylene, Synthetic rubber, Synthetic resin, Synthetic fiber, Polyethylene. 6 Water, Insulation. 7 Gas, Liquid. 8 Temperature, Obtain, Heat carrier. 9 Complete ionization, Partial ionization. 10 Packing gland, Pump shaft, Seal. Last edited by zhangyong6404 on 2009-4-18 12:33.]
Foam, dry powder, water, sand – mass per unit volume. Density = m/v, in kilograms per cubic meter. Gases, liquids… It seems like not many people know this; really embarrassing.
1. Carbon dioxide fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, halogen fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume, ρ=m/v, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, coils 7. Gases or solids, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Sealing ring, water seal ring, seal
1. Foam fire extinguishers, CO2 fire extinguishers, dry powder fire extinguishers, halon fire extinguishers. 2. Solute, solvent. 3. The mass of a substance per unit volume; ρ = m/V (where ρ represents density, m represents mass, and V represents volume), in kilograms per cubic meter. 4. Compressors, blowers, ventilators, vacuum pumps. 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, synthetic resins, synthetic fibers, synthetic rubber, polyethylene. 6. Water, electric motors. 7. Solids, liquids. 8. Temperature, absorption, cold heat exchange medium. 9. Fully ionized into ions, partially ionized. 10. stuffing box casing, pump shaft, seal.
1. Dry powder fire extinguishers, carbon dioxide fire extinguishers, \"1211\" fire extinguishers, and light water foam fire extinguishers. 2. Solute, solvent. 3. The mass contained per unit volume. ρ=m/v, kg/m3. 4. Compressors, blowers, ventilators, vacuum pumps. 5. Ethylene, propylene, butadiene, and benzene, toluene, xylene; synthetic resins, synthetic fibers, synthetic rubber. Plastics, synthetic rubber 6, acids and bases, motors. 7. Gas phase or solid phase, liquid phase. 8. Temperature, absorption, heating. 9. Fully ionized into ions, partially ionized. 10. Packing rings and packing glands, for sealing.
1 Dry powder, CO2, halogenated hydrocarbons, foam 2 Solute, solvent 3 Weight per unit volume of a substance, ρ=m/v, kg/m3 4 Ventilators, blowers, compressors, vacuum pumps 5 Ethylene, propylene, butadiene； Benzene, toluene, xylene ； Synthetic resins, synthetic fibers, synthetic rubbers; 6 Acids and bases; Motors; 7 Gas phase, liquid phase; 8 Temperature, absorption, heating; 9 Completely ionized into ions, partially ionized into ions; 10 Packing boxes and packing rings, sealing
1. Foam, gas, water, dry powder fire extinguishers 2. Solute, solvent 3. Mass of an object per unit volume; density = mass/volume, kg/m3 4. Forced draft fan, blower, compressor, vacuum pump 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, fibers, rubber, plastics 6. ? 7. Gas, liquid 8. Temperature, absorption, ? 9. Complete ionization, partial ionization 10. Packing gland, stuffing box, seal
1. Foam, carbon dioxide, dry powder, and halogenated hydrocarbons. 2. Solute, solvent 3. Mass of a substance per unit volume, ρ = m/V, kg/m3 4. Compressor, blower, ventilator, vacuum pump 5. Ethylene, propylene, butadiene, benzene, toluene, ethylbenzene, synthetic resins, synthetic fibers, synthetic rubber, polyethylene 6. Water, coil 7. Gas, liquid 8. Temperature, absorption, cold fluid 9. Complete ionization, partial ionization 10. Packing ring and packing gland, seal
1. Carbon dioxide fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, halon fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume, ρ=m/v, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, coils 7. Gases or solids, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Packing rings and stuffing boxes, sealing
1. Carbon dioxide fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, halogen fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume, ρ=m/v, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, coils 7. Gases or solids, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Packing rings and stuffing boxes, sealing
1. Foam fire extinguishers, CO2 fire extinguishers, dry powder fire extinguishers, halon fire extinguishers. 2. Solute, solvent. 3. The mass of a substance per unit volume; ρ = m/V (where ρ represents density, m represents mass, and V represents volume), in kilograms per cubic meter. 4. Compressors, blowers, ventilators, vacuum pumps. 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, synthetic resins, synthetic fibers, synthetic rubber, polyethylene. 6. Acids, coils. 7. Gas or solid, liquid. 8. Temperature, absorption, cold heat exchange medium. 9. Fully ionized into ions, partially ionized. 10. Packing rings, packing glands, and seals.
1. Foam fire extinguishers, dry powder fire extinguishers, carbon dioxide fire extinguishers, halon fire extinguishers 2. Solute, solvent 3. The mass of a substance per unit volume, ρ=m/v, kg/m3 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene; benzene, toluene, xylene, synthetic resins, synthetic fibers, synthetic rubbers; polyethylene 6. ?? 7. Gases, liquids 8. Temperature, absorption, cooling medium 9. Complete ionization, partial ionization 10. Packing ring, stuffing box, seal
1. Dry powder fire extinguishers, CO2 fire extinguishers, foam fire extinguishers, 1211 fire extinguishers. 2. Solute, solvent. 3. The mass of a substance per unit volume at a certain temperature and pressure is called the density of the object. Formula: ρ=m/v, kg/m3 or kg/cm3. 4. Low-pressure compressors, medium-pressure compressors, high-pressure compressors, ultra-high-pressure compressors. 5. “Three olefins”: polyethylene, polypropylene, polybutylene ； ““Triphenyls”: benzene, toluene, xylene ； “The “three major synthetic materials”: plastics, synthetic rubber, and synthetic fibers ； Plastics, synthetic ethanol, acetaldehyde, synthetic fibers 6, water ； Coil 7, liquid, gas. 8. Specific heat, heat transfer, heat carriers 9. Conductivity, weak conductivity 10. Packing box and shaft ； Bearing effect
1. Foam fire extinguisher； Dry powder fire extinguisher ； Carbon dioxide fire extinguisher ； “1211” fire extinguisher 2. Solute ； Solvent 3: Mass of an object per unit volume ； ρ=m/V ； kg/m3 4. Compressor ； Ventilator ； blower ； Vacuum pump 5, Ethylene ； Propylene ； butadiene ； Benzene ； Toluene ； Xylene ； Synthetic plastics ； Synthetic rubber ； synthetic fiber ； Polyethylene 6, 7: The material is derived from the gas phase ； Liquid phase 8, Temperature ； Obtained ； Cold load heat body 9, fully ionized ； Partial ionization 10, stuffing box housing ； Pump shaft ； Sealed. Last edited by lxl328 on 2009-4-17 19:25]
1. Foam fire extinguishers, dry powder fire extinguishers, carbon dioxide fire extinguishers. 2. Solute, solvent. 3. The mass of a substance per unit volume. Density = mass/volume, in kilograms per cubic meter. 4. Four categories: compressors, blowers, ventilators, and vacuum pumps. 5. Ethylene, propylene, butylene, benzene, toluene, xylene, synthetic plastics ； Synthetic rubber ； synthetic fiber ； Polyethylene 6, 7, gas, liquid. 8, 9, 10: Packing rings, packing box, seal
1. Carbon dioxide fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, “1211” fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume, ρ=m/v, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, coils 7. Gases, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Sealing ring, water seal ring, seal
1. Dry powder, foam, carbon dioxide fire extinguishers, 1211 fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume; density = mass/volume, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, motors 7. Gases, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Sealing rings, water seal rings, seals
1. Foam, gas, water, dry powder fire extinguishers 2. Solute, solvent 3. Mass of an object per unit volume; density = mass/volume, kg/m3 4. Forced draft fan, blower, compressor, vacuum pump 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, fibers, rubber, plastics 6. ? 7. Gas, liquid 8. Temperature, absorption, ? 9. Complete ionization, partial ionization 10. Packing gland, stuffing box, seal
1. Foam fire extinguishers, CO2 fire extinguishers, dry powder fire extinguishers, halon fire extinguishers. 2. Solute, solvent. 3. The mass of a substance per unit volume; ρ = m/V (where ρ represents density, m represents mass, and V represents volume), in kilograms per cubic meter. 4. Compressors, blowers, ventilators, vacuum pumps. 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, synthetic resins, synthetic fibers, synthetic rubber, polyethylene. 6. Water, electric motors. 7. Solids, liquids. 8. Temperature, absorption, cold heat exchange medium. 9. Fully ionized into ions, partially ionized. 10. stuffing box casing, pump shaft, seal.
1. Carbon dioxide fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, halogen fire extinguishers 2. Solute, solvent 3. Mass of a substance per unit volume, ρ=m/v, kilograms per cubic meter 4. Ventilators, blowers, compressors, vacuum pumps 5. Ethylene, propylene, butadiene, benzene, toluene, xylene, plastics, rubber, chemical fibers, polyethylene 6. Acids, coils 7. Gases or solids, liquids 8. Temperature, absorption, heating 9. Complete ionization, partial ionization 10. Sealing ring, water seal ring, seal