Method for removing moisture from chloroethylene or gas mixture with chloroethylene
A vinyl chloride and mixed gas technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of increasing energy consumption and high regeneration temperature, and achieve improved operation flexibility, low energy consumption, and simple process flow. Effect
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Embodiment 1
[0046] In this example, the flow rate of raw gas to be processed is 4000-7000Nm 3 / h, the pressure is 0.40-0.55MPa, and the temperature is 43°C. The main components and volume content of the mixed gas are shown in Table 3. The process requires the residual moisture index in the product gas to be less than 30×10 -6 , The recovery rate of vinyl chloride is greater than 99.9%.
[0047] Raw gas composition and content of table 3 embodiment 1
[0048] components
vinyl chloride
moisture
other impurities
Content (v%)
95~99.5
0.5~5
0.1~2
[0049] According to the above raw material mixed gas conditions, the drying system of this embodiment is composed of 4 dryers I, II, III and IV, and 1 heater, 1 cooler, 2 moisture separators, and 1 supercharger. Each dryer is connected with program-controlled valves for various corresponding process gases to enter or flow out. Corresponding program control valves are also designed between heaters an...
Embodiment 2
[0056] The feed gas flow rate processed in this example is 500-4000Nm 3 / h, the pressure is 0.3-0.4MPa, the temperature is 40°C, the content of the main components in the mixed gas is shown in Table 5, and the process requirement is that the residual water content in the product gas reaches ≤100×10 -6 , The recovery rate of vinyl chloride is greater than 99.9%.
[0057] Table 5 Example 2 raw material gas composition and content
[0058] components
vinyl chloride
h 2 o
Content (v%)
95~99.5
0.5~5
[0059] According to the above raw material mixed gas conditions, the drying system of this embodiment is composed of 3 dryers I, II and III, as well as 1 heater, 1 cooler and 2 moisture separators. Each dryer is connected with program-controlled valves for various corresponding process gases to enter or flow out. Corresponding program control valves are also designed between heaters and coolers. Switch between process steps such as drying,...
Embodiment 3
[0066] The flow rate of raw gas processed in this embodiment is 7000~10000Nm 3 / h, the pressure is 0.50-0.65MPa, the temperature is 47°C, the main components and contents in the mixed gas are shown in Table 7, and the process requirement is that the residual water content in the product gas reaches ≤50×10 -6 , The recovery rate of vinyl chloride is greater than 99.9%.
[0067] Table 7 Example 3 Raw Gas Components and Content
[0068] components
vinyl chloride
h 2 o
Content (v%)
98~99.5
0.5~2
[0069] According to the above raw material mixed gas conditions, the drying system of the present embodiment is composed of 4 dryers I, II, III and IV, and 1 heater, 1 cooler, 2 moisture separators, and 1 supercharger. Each dryer is connected with program-controlled valves for various corresponding process gases to enter or flow out. Corresponding program control valves are also designed between heaters and coolers. Switch between process ste...
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