Purification Daily Question 2018-10-15 (Multiple Choice)
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Disadvantages of low-temperature methanol washing: A. Methanol is highly toxic, flammable, explosive, and can cause poisoning. Ingesting methanol can, in mild cases, damage the visual system and nervous system ； In severe cases, it can be fatal. B Since methanol washing is carried out at low temperatures and high pressures, high requirements are placed on the material of the equipment. C Due to the properties of methanol washing and the characteristics of the process, high requirements are placed on the dynamic and static sealing points, with no leakage allowed. D The allowable concentration of methanol in air is 60 mg/m3. ABC
Methanol is highly toxic, flammable, explosive, and can cause poisoning. Ingesting methanol can, in mild cases, damage the visual system and nervous system ； In severe cases, it can be fatal. B Since methanol washing is carried out at low temperatures and high pressures, high requirements are placed on the material of the equipment. C Due to the properties of methanol washing and the characteristics of the process, high requirements are placed on the dynamic and static sealing points, with no leakage allowed.
Methanol is highly toxic, flammable, explosive, and can cause poisoning. Ingesting methanol can, in mild cases, damage the visual system and nervous system ； In severe cases, it can be fatal. C Due to the properties of methanol washing and the characteristics of the process, high requirements are placed on the dynamic and static sealing points, with no leakage allowed. D The allowable concentration of methanol in air is 60 mg/m3.