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25000NM ³ membrane separation hydrogen recovery unit (reference case)

We specialize in the promotion and application of new technologies, new techniques, new equipment and new materials for PSA nitrogen plant, PSA oxygen plant, natural gas reforming hydrogen plant, methane cracking hydrogen plant and other industrial gas separation, purification and energy gas recovery.

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  • Product Description
  • Principle of Gas Membrane Separation Technology


    The working principle of the membrane separation system is to use a high molecular polymer (usually polyimide or polysulfone) membrane to select "filter" the feed gas to achieve the purpose of separation. When a mixture of two or more gases passes through a polymer film, differences in the solubility diffusion coefficients of the individual gas components in the polymer result in different rates of permeation through the membrane wall. Thus, gases can be divided into "fast gases" (e. g., H₂, H₂, He, etc.) and "slow gases" (e. g., N₂, CH4and other hydrocarbons, etc.). When the gas mixture in the driving force-membrane on both sides of the corresponding component pressure difference, the permeation rate of relatively fast gas priority through the membrane wall and in the low pressure permeation side is enriched, and the permeation rate of relatively slow gas in the high pressure retention side is enriched.杭州普菲科空分设备有限公司

    Principle of Gas Membrane Separation Technology
    1. The hydrogen in the synthetic ammonia vent air and ammonia tank vent gas is recovered, and then returned to the production synthetic ammonia system or can be further purified into high purity hydrogen to achieve the purpose of increasing production and reducing consumption and as other hydrogenation products, the purity of hydrogen reaches 90% ~ 99.9.
    2. The methanol purge gas hydrogen recovery unit returns the recovered hydrogen to the methanol system to achieve the purpose of increasing production, reducing consumption and optimizing indicators, and the hydrogen recovery rate reaches 85-90%. The purity of hydrogen and carbon dioxide can reach 90% ~ 99.9.
    3. The membrane separation and purification of carbon monoxide device, the mixed gas rich in hydrogen/carbon monoxide is separated by membrane under a certain pressure, the purity of carbon monoxide in the gas can be increased to 95~99.0, the operating cost of the device is low (compared with the pressure swing adsorption purification CO), the operation is simple, the technology is mature and reliable.
    4. Membrane separation nitrogen making device, the use of compressed air (0.8~1.0MPa) into the membrane module, can get a purity of 93~99.0 nitrogen, especially suitable for mines, docks and other occasions, the device to achieve fully automatic, unmanned operation, mobile operation.
    5. Refinery gas hydrogen recovery unit (e. g. catalytic reforming gas, catalytic dry gas, hydrogenated dry gas, etc.)
    6. Membrane separation technology is applied to natural gas transportation and purification treatment, such as carbon dioxide removal, dehydration and hydrogen sulfide removal devices.

    Technical features
    1, the process technology has been used in a large number of similar scale industrial devices, and full load stable operation for more than 15 years, the technology is advanced and reliable;
    2. Stable operation and long continuous operation time;
    3, the maintenance workload is small, do not need special management;
    4. Safe and reliable production operation;
    Low consumption of raw materials and utilities;
    6, the device investment is low.

    Typical Flow Diagram

    杭州普菲科空分设备有限公司

     

    杭州普菲科空分设备有限公司

     

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Methanol cracking hydrogen production unit

Methanol cracking-pressure swing adsorption hydrogen production technology is a kind of methanol, water as raw materials, at a certain temperature and pressure by the catalyst into a mixed gas into a certain temperature and pressure by the catalyst cracking into a hydrogen-containing mixed gas, and then through the pressure swing adsorption purification of hydrogen technology.

Natural gas hydrogen production unit

The technology uses natural gas to undergo a chemical reaction with water vapor in a special reformer filled with a catalyst after pressurized desulfurization to generate a converted gas containing hydrogen, carbon dioxide and carbon monoxide. After part of the heat is recovered by the waste pot, CO in the converted gas is converted into H?, and the converted gas is purified by pressure swing adsorption (PSA) after cooling and condensing gas-liquid sharing.

Pressure swing adsorption hydrogen extraction device

After the mixed gas containing hydrogen (H₂) enters the adsorption tower of pressure swing adsorption (PSA) device, because the adsorption capacity of the adsorbent in the adsorption bed for each component in the gas mixture varies with the pressure change, the impurities in the feed gas are adsorbed during pressurization, and the components (hydrogen) that are not easily adsorbed are output as products from the outlet end of the adsorption bed. During decompression, the adsorbed impurities are desorbed and the adsorbent is regenerated at the same time, at least four adsorbent bed cycles are used to operate to achieve a continuous output of product hydrogen.

VPSA pressure swing adsorption oxygen plant

Multi-tower combined VPSA pressure swing adsorption oxygen production technology is a new process with low energy consumption, low noise and low maintenance cost. It has been accepted by the first set of devices in Zhejiang Province and is widely used in non-ferrous smelting, glass smelting, iron and steel smelting, chemical industry, paper making and other industries.

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