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Adsorption and separation agent for separation of ethylene and ethane as well as preparation method and application thereof

A technology of adsorption separation and ethylene ethane, which is applied in the direction of adsorption purification/separation, chemical instruments and methods, and other chemical processes, can solve the problems of weak adsorption capacity and the need to increase the adsorption capacity, and achieve high ethylene ethane separation capacity Effect

Inactive Publication Date: 2018-06-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many researches on resin materials, carbon materials, silica gel materials, etc., but they often cannot take into account the ethylene adsorption capacity and ethylene selectivity, and have certain limitations in practical applications, such as the separation effect of resin materials on ethylene and ethane. Better, but its adsorption capacity needs to be improved; carbon materials have a better separation effect, but their adsorption capacity is slightly weaker

Method used

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  • Adsorption and separation agent for separation of ethylene and ethane as well as preparation method and application thereof
  • Adsorption and separation agent for separation of ethylene and ethane as well as preparation method and application thereof

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preparation example Construction

[0022] In the present invention, the particle size of the titanium-silicon molecular sieve carrier is preferably less than 100 mesh. In the present invention, there is no special limitation on the source of the titanium-silicon molecular sieve as the carrier, and it can be prepared by methods well known to those skilled in the art. In the present invention, the preparation method of described titanium silicon molecular sieve preferably comprises the following steps:

[0023] Mix C-type silica gel, NaOH and water, then add tetrabutyl titanate and hydrogen peroxide in sequence, and conduct a hydrothermal reaction on the obtained mixed material to obtain a hydrothermal reaction material;

[0024] The hydrothermal reaction material is sequentially filtered, washed and dried to obtain a titanium silicon molecular sieve.

[0025] In the present invention, it is preferred to mix C-type silica gel, NaOH and water, then sequentially add tetrabutyl titanate and hydrogen peroxide, and c...

Embodiment 1

[0045] Add 6.8g NaOH and 8.4g C-type silica gel in 140mL distilled water, add 5.6g tetrabutyl titanate dropwise, then add 9mL H 2 o 2 Stir for 2 hours, put the obtained mixed material into a high-pressure reactor with a polytetrafluoroethylene liner, and conduct a hydrothermal reaction at 180°C for 72 hours; filter the obtained hydrothermal reaction material, and wash the filtered solid with water at 60°C to neutrality, and then dried at 105°C to constant weight to obtain a titanium-silicon molecular sieve; crush the titanium-silicon molecular sieve, and take a titanium-silicon molecular sieve less than 100 meshes as a carrier for later use; the bulk density of the titanium-silicon molecular sieve is 2.27g / cm 3 , with an average particle size of 246μm and a specific surface area of ​​443m 2 / g, the pore volume is 0.369m 3 / g.

[0046] Prepare 55 mL of 0.5 mol / L cupric chloride solution, add 30 g of titanium-silicon molecular sieves, let stand at room temperature for 24 hour...

Embodiment 2

[0049] Prepare 55 mL of 0.3 mol / L silver nitrate solution, add 30 g of the titanium-silicon molecular sieve prepared in Example 1, let stand at room temperature for 24 hours, then dry at 90°C to constant weight to obtain an adsorption separation agent, wherein, in terms of silver, the amount of silver nitrate The loading is 5.94%.

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Abstract

The invention provides an adsorption and separation agent for separation of ethylene and ethane. The adsorption and separation agent is prepared from a titanium silicalite molecular sieve carrier anda metal salt active component, wherein the metered by metal element, the loading capacity of the metal salt active component is 3-10wt%. The adsorption and separation agent provided by the invention adopts the titanium silicalite molecular sieve as the carrier, gives consideration to ethylene adsorption capacity and ethylene selectively, and has higher ethylene and ethane separation capability. Under experimental conditions of embodiments, the separation factor of the adsorption and separation agent provided by the invention to ethylene and ethane can reach 6.57, at the moment, the adsorptioncapacity of the adsorption and separation agent to ethylene is 2.602mmol / g, and the adsorption capacity of the adsorption and separation agent to ethane is 0.396mmol / g.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to an adsorption separation agent for separation of ethylene and ethane, a preparation method and application thereof. Background technique [0002] At present, the technology used in industry for the separation of ethylene and ethane is mainly low-temperature rectification, which has high energy density, high energy consumption, and large investment in equipment. Therefore, it is necessary to develop energy-saving and efficient separation technologies. Pressure swing adsorption separation is a technology that utilizes the difference in the adsorption capacity of the components in the mixed gas on the adsorbent under different pressures to achieve separation. It has low energy consumption, good separation effect, simple equipment and high degree of automation, and is widely used in the separation and purification of gases. [0003] The core of pressure swing adsorption ...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/32C07C7/13C07C11/04C07C9/06
CPCB01J20/10B01J20/3204B01J20/3236C07C7/13C07C11/04C07C9/06
Inventor 刘新亮张贵才尹海亮孙洪涛郭子棋刘臻
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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