Molecular sieve adsorbent containing copper and halogen and preparation method thereof

A molecular sieve and adsorbent technology, which is applied in the field of copper-containing and halogen molecular sieve adsorbents and their preparation, can solve the problems of low adsorption capacity, poor regeneration stability, and low purification precision of adsorbents, and achieve good regeneration and good technical effects. Effect

Active Publication Date: 2017-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One of the technical problems to be solved by the present invention is that there are problems such as low purification precision, low adsorption capacity and poor regeneration stability of the adsorbent in the prior art.

Method used

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  • Molecular sieve adsorbent containing copper and halogen and preparation method thereof
  • Molecular sieve adsorbent containing copper and halogen and preparation method thereof
  • Molecular sieve adsorbent containing copper and halogen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation process of the NaY molecular sieve adsorbent modified with copper and fluorine elements is as follows. First, accurately weigh 10 g of NaY molecular sieve raw powder with a silicon-aluminum ratio of 5. Subsequently, 100 ml of dilute nitric acid solution with a mass percent concentration of 15% was prepared for subsequent use. Accurately weigh 2.5g Al 2 o 3 , will weigh Al 2 o 3 Mix well with the above-mentioned NaY molecular sieve raw powder. Take 7ml of dilute nitric acid solution with a mass percent concentration of 15%, slowly and evenly add it dropwise to the above mixture, and then extrude it with an extruder. The molded samples are dried or oven-dried for later use.

[0031] Accurately weigh 0.74g NH 4 F, dissolved in deionized water to prepare NH with a molar concentration of 0.2mol / L 4 F solution 100ml. Simultaneously weigh copper nitrate trihydrate Cu(NO 3 ) 2 ·3H 2 O4.83g, added to the above NH 4 In the F solution, make the molar c...

Embodiment 2

[0035] The preparation process of the NaY molecular sieve adsorbent modified with copper and chlorine elements is as follows. First, accurately weigh 10 g of NaY molecular sieve raw powder with a silicon-aluminum ratio of 5. Subsequently, 100 ml of dilute nitric acid solution with a mass percent concentration of 15% was prepared for subsequent use. Accurately weigh 2.5g Al 2 o 3 , will weigh Al 2 o 3 Mix well with the above-mentioned NaY molecular sieve raw powder. Take 7ml of dilute nitric acid solution with a mass percent concentration of 15%, slowly and evenly add it dropwise to the above mixture, and then extrude it with an extruder. The molded samples are dried or oven-dried for later use.

[0036] Accurately weigh 1.07g NH 4 Cl, dissolved in deionized water to prepare NH with a molar concentration of 0.2mol / L 4 Cl solution 100ml. Simultaneously weigh copper nitrate trihydrate Cu(NO 3 ) 2 ·3H 2 O4.83g, added to the above NH 4 In the Cl solution, make the mola...

Embodiment 3

[0040] The preparation process of the NaY molecular sieve adsorbent modified with copper and bromine elements is as follows. First, accurately weigh 10 g of NaY molecular sieve raw powder with a silicon-aluminum ratio of 5. Subsequently, 100 ml of dilute nitric acid solution with a mass percent concentration of 15% was prepared for subsequent use. Accurately weigh 2.5g Al 2 o 3 , will weigh Al 2 o 3 Mix well with the above-mentioned NaY molecular sieve raw powder. Take 7ml of dilute nitric acid solution with a mass percent concentration of 15%, slowly and evenly add it dropwise to the above mixture, and then extrude it with an extruder. The molded samples are dried or oven-dried for later use.

[0041] Accurately weigh 1.96g NH 4 Br, dissolved in deionized water to prepare NH with a molar concentration of 0.2mol / L 4 Br solution 100ml. Simultaneously weigh copper nitrate trihydrate Cu(NO 3 ) 2 ·3H 2 O4.83g, added to the above NH 4 In the Br solution, the molar conc...

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Abstract

The invention relates to a molecular sieve adsorbent containing copper and halogen and a preparation method thereof, which mainly solves the problems of low purification precision, low adsorption capacity and poor regeneration stability of the adsorbent in the existing olefin adsorption purification technology. The present invention is formed by ball rolling, beating or extruding, and then adopts the impregnation method to introduce transition metal element copper and Group VII A elements to modify and modify the molecular sieve to make a solid adsorbent and a technical solution for its preparation method, preferably This problem has been completely solved, and it can be used in the industrial production of adsorption and purification of various olefinic raw materials to remove sulfur-containing compounds.

Description

technical field [0001] The invention relates to a molecular sieve adsorbent containing copper and halogen and a preparation method thereof. Background technique [0002] As an important basic organic chemical raw material, propylene is widely used and its demand is expanding day by day. Olefin disproportionation technology is one of the effective methods to increase propylene production. C 4 As one of the raw materials for olefin disproportionation, olefins have complex compositions, different sources, and different components. C 4 It often contains oxygen-containing compounds such as water, alcohol, ether and other non-hydrocarbon compounds containing sulfur and nitrogen in varying amounts. Among the many impurities, sulfur-containing compounds are highly toxic to the catalyst, and a small amount of sulfur-containing impurities will poison and deactivate the catalyst in downstream processing and production. Moreover, the existence of sulfide not only affects the qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18B01J20/30C07C7/13C07C11/08
Inventor 肖永厚王仰东洪涛刘苏
Owner CHINA PETROLEUM & CHEM CORP
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