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Application of Material Tut-O2 as Adsorbent in Separation of Low Concentration Ethane from Ethylene

A technology of TUT-O2 and adsorbent, which is applied in the field of separation method and the preparation of the material, can solve the problems such as difficult separation of ethane and ethylene mixed gas, and achieve the effects of being easy to master, improving adsorption strength, and extremely easy to implement

Inactive Publication Date: 2019-02-05
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the mixed gas of ethane and ethylene is difficult to separate, the present invention provides the application of a material TUT-O2 as an adsorbent in the separation of low-concentration ethane in ethylene

Method used

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  • Application of Material Tut-O2 as Adsorbent in Separation of Low Concentration Ethane from Ethylene
  • Application of Material Tut-O2 as Adsorbent in Separation of Low Concentration Ethane from Ethylene
  • Application of Material Tut-O2 as Adsorbent in Separation of Low Concentration Ethane from Ethylene

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Experimental program
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Effect test

Embodiment 1

[0031] A preparation method of adsorbent material TUT-O2 is realized through the following steps:

[0032] 0.33g (0.0026mol) of anhydrous ferrous chloride was dissolved in 50ml of dimethylformamide solution, and stirred for 2 hours. Another 0.213 g (0.001 mol) of 2,5-dihydroxyterephthalic acid was added and stirring was continued for 1 hour. Then the solution was transferred to a three-necked flask, heated at 120° C. and stirred for 18 hours under a nitrogen atmosphere to obtain a dark green powder precipitate.

[0033] Wash with methanol solution, dry naturally after washing, then place in a vacuum oven, and evacuate to a vacuum degree of 10 -5 Pa and heated to 150° C. for 6 hours until the weight of the sample remained constant to obtain a yellow-green powder.

[0034] Heat the yellow-green powder at 50°C under pure oxygen and keep it warm for 2 hours to obtain TUT-O2.

Embodiment 2

[0036] In order to better illustrate the adsorbent material TUT-O of the present invention to the separation effect of ethane-ethylene mixed gas, adopt Figure 8 The separation device shown separates the mixed gas of ethane (5%)-ethylene (95%), wherein the process parameters of the separation device are:

[0037] ⑴The inner diameter of the adsorption bed is 1cm, the length is 15cm, and all the pipelines of the device are connected by stainless steel gas lines with an outer diameter of 3mm;

[0038] (2) Porous polyethylene fiber 7 is added to the inlet and outlet of the adsorption bed as an elastic buffer layer;

[0039] (3) The mass flow meter 6 adopts the D08 type flow indicator (Beijing Qixing Huachuang Electronics Co., Ltd.) to control the gas flow;

[0040] (4) The adsorption bed is filled with granular adsorbent materials TUT-O2, 5A-molecular sieve, 4A-molecular sieve, 13X-molecular sieve and activated carbon as adsorbents.

[0041] The process flow of adsorbent materia...

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Abstract

The invention relates to gas separation technologies, in particular to application of a material TUT-O2 serving as an adsorbent to separating low-concentration ethane in ethylene, a separating method for ethane and ethylene and preparation of the material. It is designed that oxygen molecules are adsorbed on an unsaturated metal vacancy of MOFs in advance, and the material TUT-O2 is prepared. Through occupying of the oxygen molecules on the unsaturated metal vacancy, the phi bond interaction between the metal vacancy and ethylene molecules is blocked. Meanwhile, the oxygen molecules and hydrogen atoms in ethane generate a hydrogen bond function, and the adsorption strength of the material on ethane is improved; it is achieved that the TUT-O2 material can selectively adsorb ethane higher than ethylene, and finally low-concentration ethane in ethylene is effectively separated.

Description

technical field [0001] The invention relates to gas separation technology, in particular to the application of a material TUT-O2 as an adsorbent in the separation of low-concentration ethane from ethylene, the separation method of ethane and ethylene and the preparation of the material. Background technique [0002] Ethylene is the most important petrochemical basic raw material and plays a very important role in the petrochemical industry. In 2013, my country's ethylene equivalent consumption was about 35.106 million tons, and the ethylene equivalent consumption self-sufficiency rate was about 46.2%. There is a large supply gap, and the ethylene industry has great development potential. At present, China has become the second largest producer of ethylene in the world after the United States. In recent years, the competitiveness of ethylene production units using naphtha as raw material has dropped significantly, and the ethylene cracking process has shown greater cost adva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/12C07C9/06C07C11/04B01J20/22B01J20/30
CPCB01J20/226C07C7/12C07C9/06C07C11/04
Inventor 李立博李晋平李顺
Owner TAIYUAN UNIV OF TECH