Method and device for separating combined oxygen and nitrogen absorbed together by temperature change

A technology of temperature swing adsorption and adsorption separation, which is applied in separation methods, nitrogen purification/separation, and dispersed particle separation, etc. It can solve problems such as maintainability, poor maintenance cost, consumption of system resources, and complex technology types.

Active Publication Date: 2011-06-15
上海穗杉实业股份有限公司
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Problems solved by technology

Apparently, the patent achieves a theoretically obtainable variety of product streams of different purity by employing three different types of gas separation technologies—high-purity oxygen (produced from solid electrolyte air separation units), medium-purity oxygen (produced from PSA air separation) device), low-purity nitrogen (produced from the air s

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  • Method and device for separating combined oxygen and nitrogen absorbed together by temperature change
  • Method and device for separating combined oxygen and nitrogen absorbed together by temperature change
  • Method and device for separating combined oxygen and nitrogen absorbed together by temperature change

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Embodiment Construction

[0070] The method of the present invention and the device formed therewith will be further described below in conjunction with the accompanying drawings

[0071] figure 1 Among them, 1 is the compressed air drawn from the aircraft engine compressor, environmental control system or other air inlet, that is, the raw air, which can be selectively passed through the pressure reducing valve or throttled to 3-5 bar, and an air pretreatment can be selected The device is to remove the particles, impurities, etc. from the raw material air to meet the needs of the subsequent separation unit. Generally, the removal device will retain most of the particulate impurities, even moisture, carbon dioxide, etc., 2-1 is a heater or heat exchanger, which can be installed before the feed gas enters the adsorption tower, preferably installed in the adsorption tower A01 / Inside A02, it is used to heat the adsorbent, so that the adsorbent can absorb oxygen at the predetermined adsorption operation t...

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Abstract

The invention relates to the technical field of mixed gas separation, in particular to a method and a device for separating combined oxygen and nitrogen absorbed together by temperature change. The device comprises at least two absorption towers filled with absorbent, a heating and heat exchange device which heats and cools the absorbent in the absorption towers, pipelines supplying raw material gas to each absorption tower, a pipeline taking out the product gas from each absorption tower, a pipeline for recycling and exchange of gas components and energy between the absorption towers so as to transfer the gas kinetic energy and heat of the absorption tower which absorbs saturatedly to the other absorption tower, an oxygen and nitrogen product gas cushion tank, washing pipelines introducing the oxygen product gas to the feeding end of each absorption tower, and washing pipelines for introducing the nitrogen gas product to the discharging end of each absorption tower. The separating method provided by the invention can obtain two kinds of high-purity products, namely oxygen and nitrogen, at the same time by adopting a single absorption and separating process, and therefore meets the requirement of astronauts on the aerospace oxygen. The device system can be integrated highly, and the size and weight of the device system meet the requirements of the future aerospace craft on oxygen and nitrogen extraction development and the requirements of the onboard equipment.

Description

technical field [0001] The invention belongs to the technical field of mixed gas separation, and specifically relates to a method and device for separating raw gas mixtures through a non-cryogenic process, in particular to a method and device for separating a mixture containing various gas components by using a temperature swing adsorption separation system. The method and device for recovering at least one product gas, more typically, relates to a separation method and device for simultaneously separating oxygen and nitrogen from air. Background technique [0002] Oxygen and nitrogen are used as basic industrial gases with more and more important applications. In the fields of aviation and aerospace, oxygen is mainly used for breathing and combustion, personnel breathing at high altitudes, personnel breathing under nuclear and biological conditions, and high-altitude emergency parachuting Oxygen for breathing, oxygen-enriched or pure oxygen for combustion of aircraft, oxyge...

Claims

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Application Information

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IPC IPC(8): B01D53/04C01B13/02C01B21/04B01J20/18
CPCY02P20/129
Inventor 丁艳宾赵宏炜胡传东肖华军张浩姚广驰崔亮
Owner 上海穗杉实业股份有限公司
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