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A device, system and method for testing membrane separation performance

A membrane separation and detection device technology, applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problem that the membrane and membrane shell to be tested cannot be reused, continuous sample injection and analysis cannot be performed, and the number of membranes to be measured at one time is limited. and other problems, to achieve the effect of simple casting and installation methods, improved test efficiency, and reduced test costs

Active Publication Date: 2016-04-06
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] In view of this, the main purpose of the present invention is to provide a device, system and method for testing the membrane separation performance, so as to solve the problem that in the existing membrane testing device, the membrane to be tested and the membrane casing cannot be reused, and the number of membranes to be tested at one time is limited. The test efficiency is low, the raw material gas is the pure gas of the component to be tested, which leads to a large error between the experimental results and the actual separation process results, and the continuous sample injection and analysis cannot be performed, the test results are inaccurate, and the test time is long.

Method used

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  • A device, system and method for testing membrane separation performance
  • A device, system and method for testing membrane separation performance
  • A device, system and method for testing membrane separation performance

Examples

Experimental program
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Embodiment 1

[0067] This embodiment is completed sequentially according to the following steps: Step 1: In this example, the membrane module to be tested is an internal pressure type, and the membrane area is 40cm 2 . according to Figure 4 Connect the raw material gas inlet and outlet of the membrane measuring device, the permeate gas outlet, and the sweeping gas outlet to the corresponding positions in the membrane measuring system; step 2: open the carrier gas cylinder (in this embodiment, H 2 , the purity reaches 99.999%), the filter pressure reducing valve on the steel cylinder reads 0.01MPa, turn on the gas chromatograph, and preheat for 1 hour; Step 3: After filling the humidification tank with water, turn on the heating button of the humidification tank, and adjust the temperature to 45°C. Until the value is stable; Step 4: Open the raw gas cylinder (use CO in this example 2 / N 2 Mixed gas, the ratio of the two is 20:80, the purity reaches 99.9%), adjust the feed gas flow regula...

Embodiment 2

[0069] This embodiment is completed successively according to the following steps: Step 1: In this example, the membrane module to be tested is an external pressure type, and the membrane area is 106 cm 2 . The feed gas inlet and outlet are two short pipes on the side wall of the membrane shell in the membrane measuring device, and the permeate gas outlet is Figure 4 There are 14 medium pressure gauges, and the purge gas inlet is Figure 4 Middle pressure gauge 12; Step 2: Open the carrier gas cylinder (in this example, use H 2 , the purity reaches 99.999%), the filter pressure reducing valve on the steel cylinder reads 0.01MPa, turn on the gas chromatograph, after preheating for 1 hour, the chromatograph reaches 150°C and the temperature is constant; Step 3: After filling the humidification tank with water, turn on the humidification Tank heating button, adjust the temperature to 45 ° C until the value is stable; step 4: open the raw gas cylinder (in this embodiment, CO 2...

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Abstract

The invention discloses a device, a system and a method for testing separation performance of a membrane. The device comprises a membrane component and a membrane shell sheathed at the outer side of the membrane component, wherein the membrane component is composed of a membrane to be tested and two hard tubes fixedly combined with the two ends of the membrane to be tested. The system comprises a gas source device, a membrane test device and a detection device. The gas source device is used for providing feed gas and sweep gas, which are needed in the testing of the separation performance of the membrane, for the membrane test device; according to the membrane test device, the feed gas is permeated by the membrane to be tested, the permeated gas permeating the membrane is collected and is taken away by the sweep gas so as to be provided for the detection device; and the detection device is used for testing and calculating the permeation rate of the permeated gas provided by the membrane test device and calculating separation factors of the membrane to various components of the feed gas. By using the device, the system and the method for testing the separation performance of the membrane, the problems that the membrane to be tested and the membrane shell cannot be used repeatedly, the test efficiency is low due to limited number of membranes tested at a time, larger error is produced in the experimental result and the result of the actual separation process, and the test result is inaccurate and the like are solved.

Description

technical field [0001] The invention relates to the technical field of gas membrane separation performance testing, in particular to a device, system and method for testing membrane separation performance. Background technique [0002] Gas membrane separation technology began in the second half of the 20th century and is a new type of gas separation technology. Compared with traditional separation techniques such as low-temperature distillation and cryogenic adsorption, it has the characteristics of high separation efficiency, compact equipment, low energy consumption, convenient operation, and low investment. one of the key points. In particular, the application of hollow fiber gas separation membranes (hollow fiber membranes for short) in the fields of petroleum, natural gas, and chemical industry has made it one of the important symbols of national science and technology and industrial development. The basic principle of gas membrane separation technology is to achieve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/10
Inventor 李红宾徐世义蔡彦张砚龙
Owner ENN SCI & TECH DEV
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