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Gas separation membrane
The principle of solution-diffusion separation is that the different components of organic gases and air have different dissolution and diffusion rates in the membrane, and the partial pressure difference of the components in the mixture serves as the driving force for separation.
Category:
Keyword:
Gas separation membrane
- Product Description
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- Commodity name: Gas separation membrane
The principle of solution-diffusion separation is that the different components of organic gases and air have different dissolution and diffusion rates in the membrane, and the partial pressure difference of the components in the mixture serves as the driving force for separation.
I. Organic Gas Permeation Membrane Structure Diagram
II. Membrane Separation Principle:
Solution-diffusion separation principle: The dissolution and diffusion rates of organic gases and air components in the membrane are different. The partial pressure difference of the components in the mixture is the driving force for separation. Under a certain pressure difference, the organic gas permeates the membrane surface and is enriched and recovered for reuse.
III. Oil and Gas Recovery Process Flow Diagram
IV. Product Advantages and Application Characteristics
1) Comparison of membrane quality at home and abroad
Manufacturer
Permeation rate
Separation factor (propane)
Luoyang Wohong Petrochemical Equipment Co., Ltd.
100-300
13-20
GKSS, Germany
400-800
4-8
MTR, USA
400-800
4-8
Other domestic companies
80-300
8-12
The permeation rate in the table above describes the amount of gas permeating the membrane, and the separation factor describes the amount of organic gas (VOCs) permeating the membrane. The larger the separation factor, the better the separation performance of the membrane. It can be seen that foreign membranes are mainly high-flux, low-separation factor membranes, while domestic membranes generally have better separation factors than foreign ones, especially the quality of our company's membranes, which has been greatly improved compared to domestic and foreign ones. Moreover, because the membrane separation efficiency of our company is higher than that of other domestic and foreign manufacturers, the pre-membrane compression process is eliminated in industrial applications, and micro-pressure gas is directly used for membrane separation, greatly improving the safety performance of the device.
2) Characteristics and advantages of membrane technology recovery
Characteristics of membrane technology recovery: Membrane separation is based on the principle of similar dissolution and diffusion. Only physical changes occur during the separation process, without any chemical changes. Therefore, the membrane separation process is clean and environmentally friendly, and does not produce secondary pollution. Advantages of membrane technology recovery: Simple technical process design, few auxiliary equipment, and operating energy consumption is only that of condensers and vacuum pumps; the required condenser temperature does not need deep cold, and circulating water or brine can be used according to the properties of the substance; the membrane separation system is an open system, and there is no safety hazard caused by the phase change heat of organic gases during operation, nor is there an explosion hazard due to sudden changes in system pressure.
3) Characteristics of membrane technology tail gas treatment
Combined characteristics of membrane technology, adsorption technology, absorption technology, and combustion technology: Membrane technology can be used as the main recovery technology, recovering most of the organic solvents and greatly reducing the tail gas concentration, thereby reducing the pressure of subsequent treatment; such as reducing the amount of adsorbent used (reducing costs) and reducing the adsorption-desorption switching frequency (reducing wastewater discharge and increasing the service life of the adsorbent), controlling the concentration entering the RTO, and reducing the risks caused by concentration.
V. Scope of application:
Alkanes: n-hexane, n-heptane, gasoline, diesel, etc.; Alcohols: methanol, ethanol, propanol, butanol, isopentanol, etc.; Ethers: diethyl ether, dibutyl ether, methyl isobutyl ether, petroleum ether, etc.; Ketones: acetone, butanone, cyclohexanone, etc.; Halogenated alkanes: dichloromethane, trichloromethane (chloroform), tetrachloromethane, chlorocyclopropane, etc.; Aromatic hydrocarbons: benzene, toluene, xylene, etc.; Esters: ethyl acetate, butyl acetate, etc.
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Shanghai Mingran Shengtuo Environmental Protection Technology Co., Ltd.
Phone: +86-15710121021 Guo Manager
Address: No. 1, Floor 1, Yewa Highway, Yexie Town, Songjiang District, Shanghai
Email:15065741650@163.com
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