2017-6-15 Purification Technology Edition Daily Question
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1. The sources of cooling capacity for methanol washing are ( ) ( ) ( ) ( ). 2. After water interconnection, the methods for drying the system are ( ). ( ) 3. The conditions for hot-starting sulfur recovery are: the temperature of the furnace ( ) the temperature of the catalyst ( ) the internal temperature of each unit ( ). 1. Answer: Freezing station, CO2 separation, throttling, cooling water. 2. Answer: (1) Nitrogen drying method; (2) Methanol cycle to remove moisture. 3. Answer: (1) The temperature in the furnace should be above 1000°C. (2) The catalyst temperature should be above 200°C. (3) The internal temperature of each device should be above 120°C. Note: Answers to this question are valid within 3 days! ! !
1. (1) Hybrid refrigeration systems provide cooling capacity through liquid ammonia； (2) Refrigeration by flash desorption of high-pressure methanol solution rich in CO2 ； (3) The cooling capacity provided by the water cooler. 2. (1) Nitrogen drying method; (2) Methanol circulation to remove moisture. 3、 1) The temperature of the furnace chamber should be above 1000°C. 2) The catalyst temperature should be above 200°C. 3) The internal temperature of each device should be above 120°C.
The cooling source for methanol washing is: circulating cooling water, evaporation of low-pressure liquid nitrogen, low-temperature air, and refrigeration achieved through pressure-driven desorption of methanol enriched with impurity gases such as carbon dioxide；
1. Freezing station, CO2 separation, throttling, cooling water 2. Nitrogen drying method, methanol cycle for removing moisture 3. 1000°C, 200°C, 120℃
1: Freezing station, CO2 separation, throttling, cooling water. 2: (1) Nitrogen drying method; (2) Methanol cycle for removing moisture. 3: (1) The temperature in the furnace should be above 1000°C. (2) The catalyst temperature should be above 200°C. (3) The internal temperature of each device should be above 120°C.
①Circulating cooling water ② Low-pressure liquid ammonia evaporation ③ Low-temperature air ④ Low-temperature liquid nitrogen to remove excess cooling capacity
1. Answer: Freezing station, CO2 separation, throttling, cooling water. 2. Answer: (1) Nitrogen drying method; (2) Methanol cycle to remove moisture. 3. Answer: (1) The temperature in the furnace should be above 1000°C. (2) The catalyst temperature should be above 200°C. (3) The internal temperature of each device should be above 120°C.
1. The hybrid refrigeration system provides cooling capacity through liquid ammonia; high-pressure methanol solution rich in CO2 is used for refrigeration via flash evaporation, and the water cooler also contributes to the cooling effect. 2. Nitrogen drying is employed, with methanol circulation being used to remove moisture. 3. 1000 200 120
1. Freezing station, CO2 separation, throttling, cooling water
1. Freezing station, CO2 separation, throttling, cooling water. 2. Answer: (1) Nitrogen drying method; (2) Methanol cycle to remove moisture. 3. Answer: (1) The temperature in the furnace should be above 1000°C. (2) The catalyst temperature should be above 200°C. (3) The internal temperature of each device should be above 120°C.
1. Freezing station, CO2 separation, throttling, cooling water 2. Nitrogen drying method, methanol cycle for removing moisture 3. Should be above 1000°C, should be above 200°C, should be above 120℃