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A high-efficiency continuous molecular sieve adsorbent post-treatment device and its use method

A post-processing device and molecular sieve technology, applied in chemical instruments and methods, and other chemical processes, can solve the problems of many production process parameters, unfavorable promotion and application, and low degree of automation, so as to achieve strong operability and avoid feeding Complex, highly automated effects

Active Publication Date: 2022-04-26
CHINA CATALYST HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This post-processing method needs to be fed in batches in a certain order in a stirred reactor and carried out in stages. Its automation is low, the work intensity is high, and the continuity is poor. In addition, manual monitoring of production conditions is required from time to time, and the operation is complicated.
[0003] The patent application numbers are CN200910047060.8 and CN200610011875.7 respectively propose a belt filter multi-stage countercurrent, multi-stage serial fluidized bed alternate switching and other ways to carry out molecular sieve ion exchange, which can realize a certain degree of automation, but due to the design The reason is that compared with the kettle exchange method, the operation is complicated, the production process parameters are more, and the relative cost increases a lot. Therefore, its equipment and methods are not conducive to its promotion and application in industrial scale-up production, and the molecular sieve described in the patent The ion exchange equipment failed to clearly specify the molecular sieve feeding method and how to unload the material after the exchange, because the molecular sieve generally used for the adsorbent generally has a certain mesh of granular materials, the fluidity is poor, and a large amount of cleaning is required. Washing with hot water not only causes unnecessary waste of resources, but also causes environmental protection and cost problems.
[0004] As the market demand for molecular sieve adsorbents with new functions continues to grow, their synthesis methods and modification methods are not only new, but the corresponding industrial production scale is also expanding. Quantity, operation complexity of instruments and equipment, and environmental impact will all affect its cost. Existing equipment methods generally have complex operations, low automation, long time, poor continuity, and efficiency in the post-treatment process of molecular sieve adsorbents. Low-level real-world technical issues

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  • A high-efficiency continuous molecular sieve adsorbent post-treatment device and its use method
  • A high-efficiency continuous molecular sieve adsorbent post-treatment device and its use method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] Such as figure 1 and 2 As shown, this embodiment discloses a high-efficiency continuous molecular sieve adsorbent post-treatment device. This device integrates automatic feeding, exchange, rinsing, and solid-liquid separation. It mainly includes an automatic feeding system and a cloth separation system. , Exchange rinse system.

[0039] The automatic feeding system comprises a collecting tank 12, a vacuum pump 15, a feeding tank 3 and a multidirectional dispersing mixer 2; the collecting tank 12 and the vacuum pump 15 communicate with the feeding tank 3 through a feeding pipeline 24 and a negative pressure pipeline 25 respectively, A filtering device 14 is provided at the connection between the negative pressure pipeline 25 and the feeding tank 3 , and the filtering device 14 filters the molecular sieve adsorbent to prevent the molecular sieve adsorbent in the feeding tank 3 from entering the vacuum pump 15 . The feed end of the feed pipeline 24 is provided with a con...

Embodiment 2

[0061] In this example, specifically NaX type molecular sieve adsorbent, SiO 2 / Al 2 o 3 Be 4.07, feed speed is 45g / min, adjust the frequency of the first driving device 1, control the rotating speed of multi-directional dispersing mixer 2 to be 12r / min, adjust the frequency of the second driving device 10, control the rotating speed of inner net cylinder 19 5r / min, the exchange liquid contains BaCl 2 A solution mixed with KCl, where BaCl 2 The mass concentration ratio to KCl is 10-15:1; the total mass concentration is 11.2%. The temperature of the first preheater 20 is set to 112°C, the outlet temperature of the exchange liquid is 75°C, the spraying flow rate of the exchange liquid spraying pipe 6 is 11.2ml / min, the washing area is sprayed with demineralized water, and the eluent spraying pipe 7 is sprayed The flow rate is 22ml / min, the temperature of the second preheater 21 is set to 75°C, the outlet temperature of the eluent is 43°C, the conductivity of the conductivity...

Embodiment 3

[0063] In this example, specifically NaY type molecular sieve adsorbent, SiO 2 / Al 2 o 3 Be 4.45, feed speed is 35g / min, regulate the frequency of the first driving device 1, control the rotating speed of multidirectional dispersing agitator 2 to be 13r / min, regulate the frequency of the second driving device 10, control inner turning net tube 19 The rotation speed is 5r / min, and the exchange liquid contains Mg(NO 3 ) 2 The mass concentration is 10.5%, the temperature of the first preheater 20 is set to 115°C, the outlet temperature of the exchange liquid is 80°C, the spray flow rate of the exchange liquid spraying pipeline 6 is 9.2ml / min, and the water washing area is sprayed with demineralized water. The spray flow rate of the washing liquid spraying pipeline 7 is 15.3ml / min, the temperature of the second preheater 21 is set to 62°C, the outlet temperature of the eluent is 42°C, the conductivity of the conductivity sensor 17 is 181 μs / cm, and the Na exchange Degree of Mg...

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Abstract

The invention discloses a high-efficiency continuous molecular sieve adsorbent post-processing device and its use method. The device mainly includes an automatic feeding system, a material distribution separation system, and an exchange and washing system. The device has high automation, strong continuity, simple operation, and easy exchange. Stable, low consumption of exchange fluid, high utilization rate, low energy consumption, environmental friendliness, low cost, etc., can effectively avoid practical technical problems such as complex loading and difficult discharge of existing equipment, and is easy to apply to automation and on-site , In the high-efficiency industrial scale-up production, it can be used as the main equipment in the preparation fields of catalysts, molecular sieves, and adsorbents in the future; the method is simple in process, strong in operability, and has high practicability.

Description

technical field [0001] The invention relates to the field of molecular sieve adsorbent preparation, in particular to a high-efficiency continuous molecular sieve adsorbent post-treatment device and a use method. Background technique [0002] In the existing post-treatment methods of molecular sieve adsorbents, batch-type kettle exchange is the main method, that is, metal cation nitrate or chloride with a certain concentration of ions to be exchanged is used as the exchange liquid, and the molecular sieve to be exchanged with a certain particle size Adsorbent, immersion exchange method, at a certain temperature, in a reaction kettle, driven by a motor to stir for a corresponding time, to achieve exchange balance, that is, to obtain a modified molecular sieve adsorbent with a certain degree of exchange. This post-processing method needs to be fed in batches in a certain order in a stirred reactor and carried out in stages. Its automation is low, the work intensity is high, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18B01J20/30
CPCB01J20/186
Inventor 李延鑫王志光李小龙王贤彬李进王炳春
Owner CHINA CATALYST HLDG CO LTD