Immersed vacuum membrane distillation concentration method of ethylene glycol solution
A vacuum membrane distillation and ethylene glycol technology, which is used in the immersion vacuum membrane distillation technology to concentrate and process ethylene glycol solution, and the use of membrane distillation technology to concentrate and process ethylene glycol solution. In the field of dissolved gas, it can solve problems such as membrane hydrophilicity , to achieve the effect of high treatment efficiency, reduced hydrophilization problems and low operating temperature
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0033] For a schematic diagram of the process, see figure 1 . The raw water in the figure refers to the ethylene glycol solution in the ethylene glycol hydration process of ethylene oxide. Its main water quality characteristics are: monoethylene glycol (MEG): 14% (wt), diethylene glycol (DEG): 0.5% (wt), triethylene glycol (TEG): 0.5% (wt), the rest is an aqueous ethylene glycol solution of water.
[0034] The membrane module used is a polytetrafluoroethylene (PTFE) hollow fiber hydrophobic membrane module with a membrane pore size of 0.2 μm. The process is as follows:
[0035] First, mix the ethylene glycol aqueous solution with a temperature of about 90°C with the air in a certain proportion through the air-dissolving pump; secondly, pump the mixed ethylene glycol and air gas-liquid mixture into the water tank; finally, the water submerged in the water tank The permeate side of the hollow fiber membrane module is vacuumed. Under the action of vacuum, the gas and water vap...
Embodiment 2
[0038] For a schematic diagram of the process, see figure 1. Raw water in the figure refers to the ethylene glycol solution in the ethylene glycol hydration process of ethylene oxide, and the main water quality characteristics are the same as in Example 1.
[0039] The membrane module used is a polytetrafluoroethylene (PTFE) hollow fiber hydrophobic membrane module with a membrane pore size of 0.2 μm. The process is as follows:
[0040] First, mix ethylene glycol aqueous solution at a temperature of about 85°C with nitrogen at a certain ratio through a dissolved air pump; secondly, pump the mixed gas-liquid mixture of ethylene glycol and nitrogen into the water tank; finally, the water submerged in the water tank The permeate side of the hollow fiber membrane module is vacuumed. Under the action of vacuum, the gas and water vapor in the ethylene glycol gas-water mixture pass through the membrane pores, and the condensable gas passes through the condenser on the permeate side...
Embodiment 3
[0043] For a schematic diagram of the process, see figure 1 . Raw water in the figure refers to the ethylene glycol solution in the ethylene glycol hydration process of ethylene oxide, and the main water quality characteristics are the same as in Example 1.
[0044] The membrane module used is a polytetrafluoroethylene (PTFE) hollow fiber hydrophobic membrane module with a membrane pore size of 0.15 μm. The process is as follows:
[0045] First, mix ethylene glycol aqueous solution with a temperature of about 95°C with nitrogen at a certain ratio through a dissolved air pump; secondly, pump the mixed gas-liquid mixture of ethylene glycol and nitrogen into the water tank; finally, the water submerged in the water tank The permeate side of the hollow fiber membrane module is vacuumed. Under the action of vacuum, the gas and water vapor in the ethylene glycol gas-water mixture pass through the membrane pores, and the condensable gas passes through the condenser on the permeate ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More