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Energy-saving adsorption gas drying process and device

A gas drying and adsorption technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of low dew point, low drift, zero gas consumption, high energy consumption, high cost, etc., and achieve low dew point Drift, long life, high cleanliness effect

Active Publication Date: 2019-03-19
XIAN UNIONFILTER PURIFICATION EQUIP
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an energy-saving adsorption gas drying process and device, which mainly solves the problems that the existing process and device are difficult to achieve low dew point, low drift and zero gas consumption, resulting in high cost and high energy consumption

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  • Energy-saving adsorption gas drying process and device

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Embodiment Construction

[0022] The present invention is described in detail below in conjunction with specific examples.

[0023] Such as figure 1 As shown: the method provided by the present invention includes two major links: adsorption and regeneration, that is, one group of adsorbents is adsorbed and the other group of adsorbents is regenerated. Due to the characteristics of the adsorbent itself, the two are recycled, so the Gas processing can be performed without interruption.

[0024] This embodiment only takes the adsorption of drying tank A and the regeneration of drying tank B as an example. After the completion, it is enough to switch the use state of the attached agent in the two tanks, and the principle is the same.

[0025] The drying tank A absorbs and the drying tank B regenerates including 4 working stages:

[0026] 1] Full flow heating regeneration stage

[0027] 1.1] Filter the full-flow wet gas (raw material gas) discharged from the compressor. After the filtration is completed,...

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Abstract

The invention provides an energy-saving-type adsorption-type gas drying technology and device, in order to mainly solve the problems that the cost is high and the energy consumption is high caused by the factor that an existing technology and device have difficulty in achieving low dew point, low drifting and zero gas consumption,. The energy-saving-type adsorption-type gas drying device comprises heaters and a booster fan, which are connected in series, wherein a cooler is connected to the heaters in parallel, one primary-heating heater or two secondary-heating heaters are arranged, and a plate-fin heat exchanger, a finned tube heat exchanger or a shell-and-tube heat exchanger is used as each heater. According to the invention, compression heat (residual heat) of a compressor is utilized effectively; 90%-95% of regenerated energy is from compression heat (residual heat); emission gases are avoided and regenerated gases are recycled; and the system is efficient and is low in resistance, and has long service life.

Description

technical field [0001] The invention relates to a process and device for air regeneration adsorption by using compression heat, in particular to an energy-saving adsorption gas drying process and device. Background technique [0002] Centrifugal compressors are increasingly used in the field of compressed air. Adsorption compressed air drying devices based on compression heat regeneration are gradually replacing athermal (or slightly thermal) adsorption dryers due to their significant energy-saving effects. In the past ten years, the centrifugal compressor technology has made great progress; its exhaust temperature has dropped from the original 120 ℃ to 140 ℃ to 90 ℃ to 110 ℃, or even lower. [0003] The lowering of compressor discharge temperature will greatly reduce the calorific value of exhaust gas, resulting in insufficient heat regeneration of compression heat, incomplete regeneration of adsorbent, and rise of product gas dew point. Under the working condition of 7bar,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/26B01D53/02
Inventor 李大明张志全
Owner XIAN UNIONFILTER PURIFICATION EQUIP