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Gas separation and purification system and method with stable flushing regeneration effect

A technology of gas separation and purification method, which is applied in the direction of separation method, gas treatment, and dispersed particle separation, etc. It can solve the problems of lower recovery rate, failure to reach the optimal value of yield, lower overall performance of the device, etc., and achieve consistent flushing effect, Guarantee the effect of the overall operation effect and product yield

Pending Publication Date: 2021-10-26
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when any of the flushing and regeneration processes deviates from the regeneration effect due to the performance difference of the regulating valve, the yield cannot reach the optimum value, and the overall performance of the device will be greatly reduced.
According to the analysis of the actual operation effect, when the performance of the four regulating valves is inconsistent and the difference is large, the overall recovery rate of the device is reduced by about 0.5% compared with the design in the actual operation state

Method used

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  • Gas separation and purification system and method with stable flushing regeneration effect
  • Gas separation and purification system and method with stable flushing regeneration effect
  • Gas separation and purification system and method with stable flushing regeneration effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: Separation and purification process of 3 parallel tanks and 10 adsorption towers

[0041] Table 2: 10-2-5 / P operation process table

[0042]

[0043] In this example, it can be seen from Table 2 of the operation process that each adsorption tower undergoes adsorption A, the first pressure drop E1D, the second pressure drop E2D, the third pressure drop E3D, and the fourth pressure drop E4D in a cycle. , the fifth pressure drop E5D, forward one PP1, forward two PP2, forward three PP3, reverse D, flushing three P3, flushing two P2, flushing one P1, fifth pressure rise E5R, fourth pressure E4R, the third pressure rise E3R, the second pressure rise E2R, the first pressure rise E1R and the final pressure rise FR, the rest of the adsorption towers also go through the same process, but the time is staggered by a sub-period.

[0044] Such as figure 1 As shown, the T101, T103, T105, T107 and T109 adsorption towers with odd numbers form a single series, and the...

Embodiment 2

[0055] Embodiment 2: Separation and purification process of 2 parallel tanks and 12 adsorption towers

[0056] Table 3: 12-2-6 / P operation process table

[0057]

[0058] In this example, it can be seen from Table 3 of the operation process that each adsorption tower undergoes adsorption A, the first pressure drop E1D, the second pressure drop E2D, the third pressure drop E3D, and the fourth pressure drop E4D in a cycle. , the fifth pressure drop E5D, the sixth pressure drop E6D, the first PP1 forward, the second PP2 forward, the reverse D, the second flushing P2, the first flushing P1, the sixth pressure rise E6R, the fifth pressure rise E5R , the fourth pressure rise E4R, the third pressure rise E3R, the second pressure rise E2R, the first pressure rise E1R and the final pressure rise FR. cycle.

[0059] Such as figure 2 As shown, the numbered T101, T103, T105, T107, T109 and T1011 adsorption towers form a single series, and the even numbered T102, T104, T106, T108, T...

Embodiment 3

[0070] Embodiment 3: Separation and purification process of 2 parallel tanks and 14 adsorption towers

[0071] Table 4: 14-2-8 / P operation process table

[0072]

[0073]

[0074] In this example, it can be seen from Table 4 of the operating process that each adsorption tower undergoes adsorption A, the first pressure drop E1D, the second pressure drop E2D, the third pressure drop E3D, and the fourth pressure drop E4D in a cycle. , the fifth pressure drop E5D, the sixth pressure drop E6D, the seventh pressure drop E7D, the eighth pressure drop E8D, forward one PP1, forward two PP2, reverse D, flushing two P2, flushing one P1 , The eighth pressure rise E8R, the seventh pressure rise E7R, the sixth pressure rise E6R, the fifth pressure rise E5R, the fourth pressure rise E4R, the third pressure rise E3R, the second pressure rise E2R, First pressure boost E1R and final boost FR. The rest of the adsorption towers also go through the same process, but the time is staggered f...

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Abstract

The invention belongs to the technical field of industrial gas separation and purification, and particularly relates to a gas separation and purification system and method with a stable flushing regeneration effect. The gas separation and purification system comprises a raw material gas pipeline and a product gas pipeline, a plurality of adsorption pipelines are connected between the raw material gas pipeline and the product gas pipeline, adsorption towers are arranged on the adsorption pipelines, sequential release pipelines are connected among the adsorption pipelines, and a plurality of flushing regeneration adjusting systems are connected to the sequential release pipelines in parallel. A flushing regeneration adjusting pipeline is sequentially provided with a sequential release tank and a flushing adjusting valve, odd-number flushing pipelines are connected among the odd-number adsorption pipelines, even-number flushing pipelines are connected among the even-number adsorption pipelines, and the other end of the flushing regeneration adjusting pipeline is connected with the odd-number flushing pipelines and the even-number flushing pipelines respectively. According to the gas separation and purification system and method, the effect of repeated staggered flushing regeneration is integrally consistent, so that the overall operation effect of the device and the product yield are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of industrial gas separation and purification, and in particular relates to a gas separation and purification system and method with stable flushing and regeneration effects. Background technique [0002] Pressure Swing Adsorption (PSA) gas separation and purification technology utilizes the difference in adsorption characteristics such as the equilibrium adsorption capacity and adsorption rate of gas components on the adsorbent and the characteristics of adsorption capacity changing with pressure, through periodic pressure changes. The alternating process of adsorption and desorption to realize the separation or purification of gas is a physical process and can be realized at room temperature. Since the PSA system is composed of multiple adsorption towers with identical configurations and program-controlled valves connected in parallel, its overall performance also follows the theory of barrel short boards,...

Claims

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Application Information

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IPC IPC(8): B01D53/053
CPCB01D53/053B01D2259/40043B01D2259/40003B01D2259/40007
Inventor 殷文华陈健李克兵党凯吴巍王键张宏宇张杰张崇海卜令兵李凤娇高永康陶北平张海亮管宁
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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