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Olefin-alkane separating adsorbent and preparation method and application thereof

A technology for olefin alkane and adsorbent, which is applied in the field of adsorbent for olefin alkane separation and its preparation, and achieves the effects of simple method, improved adsorption and separation selectivity, and large adsorption capacity

Active Publication Date: 2013-04-03
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no research on using porous carbon as a carrier to prepare an adsorbent by loading cuprous chloride and applying it to the adsorption and separation of alkenes and alkanes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of porous carbon: Dissolve 1.0g of asphaltene in 20mL of benzene, take 1g of triblock copolymer F108 (EO 132 PO 50 EO 132 ) was dissolved in 20mL of benzene, benzene was removed in one step in an oven at 100°C and thermal polymerization was carried out, and finally under the protection of inert gas, the temperature was raised to 700°C to obtain porous carbon (specific surface area of ​​2500m 2 / g).

[0017] Preparation of adsorbent: Weigh 1 g of porous carbon and 1.188 g of CuCl prepared above, grind them at a grinding speed of 300 r / min, and grinding time of 15 min, heat-treat for 2 h at 380 °C in a nitrogen atmosphere, and immediately after cooling Obtain an adsorbent sample. The adsorption performance of the adsorbent was measured by gravimetric method (this method was used in the following examples), and the loading capacity of copper element in the adsorbent was 12 mmol / g carrier.

[0018] Adsorption experiment: Take 30mg of the above-mentioned adso...

Embodiment 2

[0020] Preparation of porous carbon: Dissolve 1.0g sucrose in 20mL isopropanol, take 2g triblock copolymer F108 (EO 132 PO 50 EO 132 ) and 1 g of triblock copolymer F127 (EO 106 PO 70 EO 106 ) was dissolved in 20mL of isopropanol, benzene was removed in one step in an oven at 130°C and thermal polymerization was carried out, and finally under the protection of inert gas, the temperature was raised to 1000°C for carbonization to obtain porous carbon (with a specific surface area of ​​3000m 2 / g).

[0021] Preparation of adsorbent: Weigh 1g of porous carbon and 0.792g of CuCl prepared, grind them at a grinding speed of 350r / min, and grinding time of 10min, heat-treat in a nitrogen atmosphere at 350°C for 2h, and obtain Sorbent samples. The loading amount of copper element in the adsorbent is 6mmol / g carrier.

[0022] Adsorption experiment: Take 30 mg of the above-mentioned adsorbent and place it in a high-precision gravimetric adsorption instrument Hiden IGA-100, fill it ...

Embodiment 3

[0024] Preparation of porous carbon: Dissolve 1.0g furfuryl alcohol in 20mL isopropanol, take 1g triblock copolymer F108 (EO 132 PO 50 EO 132 ) was dissolved in 20mL of isopropanol, and the isopropanol was removed in one step in an oven at 150°C and thermally polymerized. Finally, under the protection of inert gas, the temperature was raised to 900°C for carbonization to obtain porous carbon (with a specific surface area of ​​1000m 2 / g).

[0025] Preparation of adsorbent: Weigh 1g of porous carbon and 0.792g of CuCl, grind them, the grinding speed is 350r / min, the grinding time is 20min, heat treatment in nitrogen atmosphere, 350°C for 4h, and get the adsorbent sample after cooling . The loading amount of copper element in the adsorbent is 8mmol / g carrier.

[0026] Adsorption experiment: Take 30 mg of the above-mentioned adsorbent and place it in a high-precision gravimetric adsorption instrument Hiden IGA-100, fill it with propylene and propane at a rate of 10 mbar / min, ...

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Abstract

The invention belongs to the field of chemical separation and discloses an olefin-alkane separating adsorbent, a preparation method thereof and an application of the olefin-alkane separating adsorbent in olefin-alkane separation. The olefin-alkane separating adsorbent takes porous carbon with a high specific surface area and ordered pore passages as an adsorbent carrier, and cuprous chloride as an active component, wherein the loading amount of univalent copper is 2-12 mmol in per gram of the carrier; the cuprous chloride and the porous carbon are fully ground and thermally treated in an inert atmosphere to prepare the olefin-alkane separating adsorbent. The olefin-alkane separating adsorbent contacts olefin and alkane so as to separate the olefin from the alkane by an adsorption method. The olefin-alkane separating adsorbent is easy to prepare and good in adsorption effect and can still maintain a relatively good adsorption effect after adsorption regeneration.

Description

technical field [0001] The invention belongs to the field of chemical separation, and relates to an adsorbent used for the separation of olefins and alkanes, a preparation method and application thereof, and a regeneration method of the adsorbent. Background technique [0002] The separation of alkenes and alkanes has very important application value in the field of chemical production. At present, low-temperature rectification with high energy density is often used. However, due to the relative volatility of alkenes and alkanes, this method requires high energy consumption and large investment in equipment. Due to its advantages of high efficiency, energy saving and low cost, the adsorption separation method is considered to be a more suitable method among many separation methods at present. [0003] The core of the separation of alkenes and alkanes by adsorption is to develop adsorbents with large adsorption capacity and high adsorption selectivity. Literature (Chem.Eng.S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/34C07C7/12C07C11/04C07C9/06C07C11/06C07C9/08C07C11/08C07C9/10
Inventor 刘晓勤孙林兵蒋文娟刘定华
Owner NANJING UNIV OF TECH
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