Adsorbent prepared by utilizing molecular sieve contained waste catalyst, and removal method for methanol by using adsorbent

A waste catalyst, waste catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult disposal of waste catalysts, solid waste discharge polluting the environment, etc.

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is that in the prior art, there are problems such as difficult treatment of spent catalysts containing molecular sieves and environmental pollution caused by solid waste discharge.

Method used

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  • Adsorbent prepared by utilizing molecular sieve contained waste catalyst, and removal method for methanol by using adsorbent
  • Adsorbent prepared by utilizing molecular sieve contained waste catalyst, and removal method for methanol by using adsorbent
  • Adsorbent prepared by utilizing molecular sieve contained waste catalyst, and removal method for methanol by using adsorbent

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] The preparation process of the adsorbent containing the spent catalyst containing NaX molecular sieve whose framework structure is FAU is as follows. First, 30ml of dilute nitric acid solution with a mass concentration of 3% was prepared for use in the process of forming the adsorbent. Weigh 30 g of spent catalyst whose main component is NaX molecular sieve. The specific surface area of ​​the waste catalyst containing NaX molecular sieve is 336.4m 2 / g, the pore volume is 0.27cm 3 / g, the surface acid density of the spent catalyst is 163.0 μmol / g; based on the total weight of the spent catalyst containing molecular sieves, in parts by weight, Al 2 o 3 The content is 30 parts, SiO 2 The content is 48 parts, P 2 o 5 The content is 0 parts, Na 2 O, K 2 The total content of O, MgO and CaO is 8 parts, and the amount of carbon deposition is 5 parts. Then, weigh 20gAl 2 o 3 , and the above-mentioned waste catalyst containing molecular sieve and binder Al 2 o 3 Mix...

Embodiment 2

[0025] The preparation process of the adsorbent containing the spent NaY molecular sieve catalyst with the framework structure of FAU is as follows. First, 30ml of dilute nitric acid solution with a mass concentration of 3% was prepared for use in the process of forming the adsorbent. The specific surface area of ​​the waste catalyst containing NaY molecular sieve is 356.2m 2 / g, the pore volume is 0.29cm 3 / g, the surface acid density of the spent catalyst is 173.0μmol / g; based on the total weight of the spent catalyst containing molecular sieves, in parts by weight, Al 2 o 3 The content is 20 parts, SiO 2 The content is 48 parts, P 2 o 5 The content is 0 parts, Na 2 O, K 2 The total content of O, MgO and CaO is 9 parts, and the amount of carbon deposition is 4 parts. Take by weighing 30g the waste catalyst that main component is NaY molecular sieve, then weigh 20gAl 2 o 3 , and the above-mentioned waste catalyst containing molecular sieve and binder Al 2 o 3 Mixe...

Embodiment 3

[0028] The preparation process of the adsorbent containing the spent catalyst containing ZSM-5 molecular sieve whose skeleton structure is MFI is as follows. First, 30ml of dilute nitric acid solution with a mass concentration of 3% was prepared for use in the process of forming the adsorbent. The specific surface area of ​​the spent catalyst containing ZSM-5 molecular sieve is 214.7m 2 / g, the pore volume is 0.25cm 3 / g, the surface acid density of the spent catalyst is 158.0 μmol / g; based on the total weight of the spent catalyst containing molecular sieves, in parts by weight, Al 2 o 3 The content is 10 parts, SiO 2 The content is 48 parts, P 2 o 5 The content is 0 parts, Na 2 O, K 2 The total content of O, MgO and CaO is 9 parts, and the amount of carbon deposition is 12 parts. Take by weighing 30g main component to be the spent catalyst of ZSM-5 molecular sieve, then weigh 20gAl 2 o 3 , and the above-mentioned waste catalyst containing molecular sieve and binder...

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Abstract

The invention relates to an adsorbent prepared by utilizing a molecular sieve contained waste catalyst, and application method of the adsorbent in removal of methanol from olefin, and is mainly to solve the problems of difficult treatment of a conventional molecular sieve contained waste catalyst, environmental pollution due to discharging of solid wastes, etc. According to a technical scheme of the invention, a solid adsorbent prepared by ball rolling, sheet beating or extruded molding, and a preparation method thereof are adopted; the solid adsorbent is applied in removal of oxygen contained compounds like methanol from olefin raw materials; thus, good technical effects are obtained; wastes are reutilized, and the problem of wastes is well solved; and the solid adsorbent can be applied in adsorption and purification industrial production of removal of the oxygen contained compounds from various olefin raw materials.

Description

technical field [0001] The invention relates to a solid adsorbent made of waste catalyst containing molecular sieves and a method for removing oxygen-containing compounds such as methanol in olefins. Background technique [0002] As an important basic organic chemical raw material, low-carbon olefins are widely used and the demand is increasing. Ethylene, propylene, C 4 The composition of low-carbon olefins such as olefins is relatively complex, and the sources and components are different. Due to different production processes and raw material transportation processes, light olefins often contain varying amounts of oxygen-containing compounds such as water, alcohols, and ethers, and non-hydrocarbon compounds such as sulfur-containing and nitrogen-containing compounds. Among the many impurities, oxygen-containing compounds are highly toxic to the catalyst, and a small amount of oxygen-containing compound impurities will poison and deactivate the catalyst in downstream proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30B01J29/08B01J29/40B01J29/85C07C11/08C07C7/12
Inventor 肖永厚滕加伟洪涛王仰东刘苏
Owner CHINA PETROLEUM & CHEM CORP
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