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Device and method for enriching oxygen from compressed air

A technology of compressing air and enriching oxygen, which is applied in separation methods, chemical instruments and methods, and dispersed particle filtration, etc., to achieve the effect of reducing the demand for separation area, reducing equipment cost, and reducing device cost

Pending Publication Date: 2019-01-11
上海穗杉实业股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the research and development of membrane separation materials and breakthroughs in process technology, the α value of oxygen and nitrogen separation of organic membrane separation materials used in air separation is mostly between 2 and 7, and can be directly separated from air under a certain pressure ratio. Oxygen with a purity of about 30-60% can be obtained in the environment, and the cost control methods such as increasing the separation coefficient of the membrane separation material, further reducing the separation pressure ratio, and increasing the permeation rate have basically reached the limit, and it is becoming more and more unsustainable

Method used

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  • Device and method for enriching oxygen from compressed air

Examples

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Effect test

Embodiment 1

[0054] This embodiment provides a device for enriching oxygen from compressed air, the structural connection diagram of the device is as follows figure 1 As shown, it includes a gas compression device AB01, a heat exchange device TC02 and a membrane separation device M01. The gas compression device AB01 is connected to the heat source inlet and outlet of the heat exchange device TC02 to form a cycle. The gas compression device AB01 is also connected to the heat exchange device TC02 The cold source inlet of the heat exchange device TC02 is connected to the cold source outlet of the heat exchange device TC02 and the membrane separation device M01 is connected, and the outlet of the membrane separation device M01 obtains retentate gas and permeate gas.

[0055] Wherein, the gas compression device AB01 is divided into two parts, one part includes a first inlet and a first outlet, and the other part includes a second inlet and a second outlet, the first outlet of the gas compression...

Embodiment 2

[0065] This embodiment provides a method for enriching oxygen from compressed air, said method is carried out using the device in Embodiment 1, and its specific application environment is:

[0066] A cement plant, the supporting flow is about 340m 3 / min, the compressed air system with an outlet pressure of 1.0MPa is mainly used to supply compressed air for the needs of dust removal and blockage removal, and the normal operating pressure of the gas point is about 0.6MPa. Make the site supply compressed air and oxygen-enriched at the same time, the compressed air can meet the above-mentioned pressure requirement of 0.6MPa, there is no requirement for the components, and the oxygen is used for oxygen-enriched combustion in the cement plant.

[0067] The membrane separation device used in this example is produced by Shanghai Suishan Industrial Co., Ltd. Membrane separator, the oxygen and nitrogen separation membrane material used in it has a separation coefficient of 6.35 at 50...

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Abstract

The invention provides a device and method for enriching oxygen from compressed air. The device comprises a gas compression device, a heat exchange device and a membrane separation device. The gas compression device is bidirectionally connected to a heat source inlet and outlet of the heat exchange device so that a cycle is formed. The gas compression device is connected to a cold source inlet ofthe heat exchange device. A cold source outlet of the heat exchange device is connected to the membrane separation device. Retentate gas and permeate gas are obtained from an outlet of the membrane separation device. The membrane separation device is coupled to the existing compressed air supplying device so that low cost oxygen enrichment is realized, oxygen and compressed air are simultaneouslyfed on situ without influencing the use of the existing compressed air, the heat energy of the compressed air is fully recovered and is used for preheating membrane separation gas, the separation arearequired by the membrane separation device is effectively reduced, the cost of the equipment is reduced and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of gas separation and enrichment, and relates to a device and method for enriching oxygen from compressed air. Background technique [0002] The air contains about 21% oxygen and 78% nitrogen. Oxygen enrichment refers to the application of physical or chemical methods to collect oxygen in the air so that the oxygen content in the collected gas is ≥ 21%. Oxygen enrichment has a wide range of uses, involving Petrochemical, chemical, pharmaceutical, light industry, electric power, building materials, metallurgy, coal, transportation, aquaculture and national defense and military fields, for example, used in various kilns, boilers, heating furnaces, incinerators, heat medium furnaces, hot air Furnaces, smelting furnaces, engines and other combustion-supporting energy-saving and environmental protection fields, catalytic cracking, desulfurization, wastewater treatment, engine efficiency enhancement, oxygen-enrich...

Claims

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Application Information

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IPC IPC(8): B01D53/22B01D53/00B01D46/00
CPCB01D46/00B01D53/002B01D53/229
Inventor 谢东红严富兵顾修筑贾吉来
Owner 上海穗杉实业股份有限公司
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