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Gas adsorption equipment for supergravity movable adsorption bed

A technology for adsorbing gas and adsorption bed, which is applied in gas treatment, membrane technology, and separation of dispersed particles. It can solve the problems of low utilization rate of fixed bed adsorbent, long desorption time of fixed bed, unstable process operation, etc. Effect of desorption regeneration time, full utilization of industrial resources, and energy saving

Pending Publication Date: 2018-08-17
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve some problems existing in various types of traditional adsorption beds, such as low utilization rate of fixed bed adsorbent, poor adsorption effect, serious back-mixing in fluidized bed, easy wear of adsorbent, industrial adsorption bed belongs to intermittent operation, resulting in Unstable operation and other problems; on the other hand, for the desorption process of saturated adsorbent, the desorption time of fixed bed is long and the desorption effect is extremely poor

Method used

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  • Gas adsorption equipment for supergravity movable adsorption bed
  • Gas adsorption equipment for supergravity movable adsorption bed

Examples

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Effect test

Embodiment 1

[0034] Example 1: For the toluene gas generated by the gas generator, activated carbon was used as the adsorbent, and the supergravity moving adsorption bed was used as the adsorption device to carry out the adsorption test. The design capacity of the whole device is 0-15m 3 / h, the diameter of the adsorption column is 50mm, and the rotation speed of the adsorption column can be adjusted at 0-900r / min. The concentration of toluene gas produced by the gas generator is maintained at 2000-3000ppm, and the intake air volume is 5m 3 / h, during the experiment, the adsorption performance of the three adsorption beds was studied by adjusting the rotation speed. Moving and rotating beds.

[0035] During the experiment, the loading amount of activated carbon was 300 g, and the adsorption time was 10 h. The results showed that the adsorption capacity of the fixed bed was 350 mg / g, the adsorption capacity of the moving bed was 450 mg / g, and the adsorption capacity of the rotating bed w...

Embodiment 2

[0036] Example 2: For the activated carbon saturated with adsorption, the supergravity moving adsorption bed was used for desorption, the desorption medium was nitrogen at 80 ° C, and the outlet concentration was maintained at 100 ppm, the desorption time required for the fixed bed was 200 min, and the moving bed The desorption time was 140min, and the desorption time required for rotation was 50min; at the same time, it was determined that the desorption time was 30min, the desorption rate of the fixed bed was 23%, the desorption rate of the moving bed was 36%, and the desorption rate of the rotating bed was 36%. The adsorption rate was 76%, indicating that the rotating bed has superior performance in the desorption of saturated activated carbon.

Embodiment 3

[0037] Example 3: For toluene gas with a concentration of 1000 ppm, a supergravity moving adsorption bed was used to carry out adsorption and desorption experiments. Adjust the rotation speed to 0r / min, the entire adsorption bed is in fixed bed mode, and the gas inlet is passed for 10m 3 / h of toluene gas, the activated carbon loading in the adsorption column is 500g, after 10h of adsorption, stop feeding toluene gas, change to 80% nitrogen, adjust the speed to 500r / min, at this time the adsorption bed is in the rotating bed mode, and the desorption is carried out. In the adsorption experiment, after 50 min of desorption, repeat the previous adsorption test of toluene gas, the adsorption amount reached 470 mg / g for 8 h, and the activated carbon still maintained a better adsorption effect. , to maintain a good adsorption and desorption effect.

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Abstract

The invention belongs to the technical field of adsorption and desorption of solid adsorbent adsorption gas, aims to solve the problems of poor adsorption and desorption effects, low adsorbent utilization rate and the like in the traditional adsorption bed, and provides gas adsorption equipment for a supergravity movable adsorption bed. The adsorption gas equipment has three modes, including a fixed bed mode, a movable bed mode and a revolving bed mode. The equipment comprises an adsorption column, wherein an adsorbent is loaded in the adsorption column; the mode of the equipment is changed bychanging the flowing speed of the adsorbent in the adsorption column and the revolving speed of the adsorption column. Mode switching is performed in the same equipment, so that efficient and continuous operation is realized. By adopting the gas adsorption equipment, the utilization rate of the adsorbent can be increased greatly, the desorption regeneration time of a saturated adsorbent is shortened, a good treatment effect is achieved, the running cost is low, the service life of the adsorbent is prolonged, and the adsorption performance of the adsorption equipment is improved. The gas adsorption equipment has certain engineering practical application significance as well as energy saving and environmental protection significance.

Description

technical field [0001] The invention belongs to the technical field of adsorption and desorption of adsorbed gas by a solid adsorbent, and in particular relates to a supergravity moving adsorption bed adsorbing gas device. Background technique [0002] Adsorption is an important chemical unit operation process, which is widely used in petroleum, chemical industry, metallurgy, food, medicine, etc. In daily life and industrial production, adsorption is also used in household water purification, refrigerator deodorization, etc. Adsorption is the contact between the mobile phase and the porous solid particles, so that the solid particles selectively accumulate and condense certain components in the mobile phase on their inner and outer surfaces, so as to achieve the purpose of separation. Common adsorbents include silica gel, activated alumina, activated carbon and molecular sieves, etc., which can be reasonably selected according to the mobile phase to be processed. The main m...

Claims

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Application Information

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IPC IPC(8): B01D53/04B01D53/06B01D53/08B01D53/24
CPCB01D53/04B01D53/06B01D53/08B01D53/24B01D2253/102B01D2253/104B01D2253/106B01D2253/108B01D2253/116B01D2257/70B01D2257/304B01D2257/708B01D2259/4009
Inventor 刘有智郭强祁贵生
Owner ZHONGBEI UNIV
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