Online purifying system of waste helium generated in optical fiber manufacturing

A technology of helium and optical fibers, which is applied in the field of optical fiber manufacturing waste helium on-line purification system, can solve the problem of difficulty in online recovery and secondary supply of helium-rich tail gas, etc.

Active Publication Date: 2014-05-07
VACREE TECH +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide an online purification system for waste helium gas in optical fiber manufacturing to solve the difficult problem of online recovery, purification, and secondary supply of helium-rich tail gas generated during the processing of wire drawing cooling towers and preform rods in the optical fiber industry , realize the recycling of helium resources, and reduce the waste of helium resources

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  • Online purifying system of waste helium generated in optical fiber manufacturing

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Embodiment Construction

[0016] Such as figure 1 shown. Optical fiber manufacturing waste helium online purification system, including recovery unit 1, membrane separation unit 2, and gas supply unit 3. Wherein recovery unit 1 comprises gas collection tank 101, booster pump 102, flow meter 103; Membrane sub-unit 2 comprises adsorber 201, membrane separator 202, buffer tank 203, purity detector 204; Gas supply unit 3 comprises pressure regulating valve 301. A surge tank 302.

[0017] The recovery unit 1 includes a gas collection tank 101 , a booster pump 102 , and a flow meter 103 . The helium-rich tail gas in each optical fiber drawing cooling tower and preform manufacturing device is subjected to the negative pressure suction generated by the booster pump 102, flows into the gas collection tank 101 through the pipeline, and the helium-rich tail gas in the gas collection tank 101 is then compressed by the booster pump 102 After boosting, it enters the membrane division unit 2 through pipeline conne...

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Abstract

The invention discloses an online purifying system of waste helium generated in optical fiber manufacturing. The online purifying system comprises a recovering unit, a membrane separating unit, and a gas supplying unit, wherein the recovering unit comprises a gas collecting tank, and a booster pump; the membrane separating unit comprises an adsorber, a membrane separator, a buffer tank, and a purity analyzer; the gas supplying unit comprises a pressure stabilizing tank and a pressure adjusting valve. According to the online purifying system, by adopting a mode of combining a high-pressure adsorption technology and a membrane separation technology, purification of helium-rich tail gas is realized, and purified tail gas is supplied to an optical fiber wiredrawing cooling tower and a preformed rod manufacturing process for being used. According to the online purifying system, low-concentration waste helium with a purity of lower than 50 percent is recovered and purified, the purity of the waste helium after being purified is not less than 99 percent, and the recovering rate is not less than 70 percent. The online purifying system mainly consumes electricity; the electric power is 15-20 kW and is very small in consumption as compared with saved helium cost.

Description

technical field [0001] The invention relates to the field of helium gas recovery systems, in particular to an online purification system for waste helium gas from optical fiber manufacturing. Background technique [0002] Helium is a scarce strategic resource. As one of the helium-poor countries, China has long relied on imports, so the rational allocation and application of helium resources is particularly important. [0003] Helium has been widely used in aerospace, military, scientific research and other fields. With the development and growth of my country's industry, the consumption of helium in some industrial fields is also considerable, such as air conditioners, optical fiber cables, semiconductors and other industries. Industrial helium is generally directly consumed and discharged into the atmosphere, and the helium in the exhaust gas is not recovered, purified or post-treated. The reasons are generally that helium does not account for a high proportion of the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B23/00
Inventor 蒋伟周丽萍黄卫罗辉章学华张茜赵俊汪澎郭会军
Owner VACREE TECH
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