Solid adsorbent and preparation method thereof

A solid adsorbent and precursor technology, applied in the field of solid adsorbent and its preparation, can solve the problems of high regeneration temperature and low adsorption capacity of adsorbent, and achieve the effects of low regeneration temperature, improved adsorption capacity, and high adsorption capacity

Active Publication Date: 2010-11-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that one of the problems in the prior art is that the adsorption capacity of the adsorbent is low and the regeneration temperature is high

Method used

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  • Solid adsorbent and preparation method thereof
  • Solid adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Contains NaY molecular sieves and CaCl 2 The preparation process of the solid adsorbent is as follows. Using alumina as binder, according to the mass ratio of NaY molecular sieve to alumina 1:4, add a small amount of turnip powder and mix well, then add a certain concentration of dilute nitric acid, and extrude into strips. Dry it naturally, and bake it for 2 hours at 500°C in the air. Grind to 10-20 meshes, dry at 400°C until the mass is no longer reduced, and obtain the shaped solid adsorbent precursor I, which is transferred to a desiccator for later use. The preparation mass concentration is 10% CaCl 2 Solution I. The solid adsorbent precursor I was immersed in the above solution I. After full impregnation, filter off the CaCl 2 solution, washed with deionized water to remove residual CaCl on the surface 2 , to obtain solid adsorbent II. Dry in the air, and then dry the solid adsorbent II prepared above in a muffle furnace at 400° C. in the air until the mass...

Embodiment 2～17

[0019] The solid adsorbent was prepared and evaluated according to the steps and conditions of Example 1. Only the composition or preparation conditions are changed, the changed conditions are listed in Table 1, and the evaluation results are listed in Table 2.

[0020] Table 1 Composition and preparation conditions of various adsorbents

[0021]

[0022] Table 2 Evaluation results of various adsorbents

[0023]

[0024] *The breakthrough adsorption capacity of an adsorbent is expressed by the weight of adsorbed water per gram of adsorbent.

Embodiment 18

[0026] Prepare NaY-containing molecular sieve, MgSO by the method and steps of Example 1 4 and CaCl 2 The solid adsorbent, but the prepared solution I contains 10% CaCl 2 Also contains 10% MgSO 4 . The solid adsorbent obtained is CaCl in weight fraction 2 7 parts, MgSO 4 It accounts for 13.2 parts, and the rest is NaY molecular sieve. According to the same evaluation conditions as in Example 1, the breakthrough adsorption capacity of water is 4.01 g / g adsorbent, and the regeneration temperature of the adsorbent is 230° C.

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Abstract

The invention relates to a solid adsorbent and a preparation method thereof, mainly solving the problems of low adsorption capacity and higher regeneration temperature of the adsorbent in the prior art. By adopting the technical scheme that a compound solid adsorbent is prepared by combining at least one kind of halide of alkali metal, halide of alkaline earth metal or metal sulfates with a molecular sieve, the invention better solves the problems and can be used for industrial production of adsorption and purification of various hydrocarbon raw materials.

Description

technical field [0001] The invention relates to a solid adsorbent and a preparation method thereof. Background technique [0002] In order to meet the needs of olefin polymerization, olefin disproportionation and other production processes, the purity requirements of industrial gases and liquid raw materials such as ethylene, propylene and butene have been continuously improved, of which H 2 The removal of impurities such as O, methanol, dimethyl ether and other oxygen-containing compounds is an extremely important process. Porous substances such as silica gel, alumina, and molecular sieves are commonly used as adsorbents. US Patent US 6111162 reports the use of silica gel as an adsorbent to adsorb and remove oxygen-containing compounds from hydrocarbon feedstocks. US Patent No. 4,371,718 reports that alumina is used as an adsorbent to remove methanol from butene feedstock. European patent EP 0229994 discloses from liquid C 3 ~C 5 A method for removing dimethyl ether fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30
Inventor 肖永厚谢在库王仰东陶伟川刘苏
Owner CHINA PETROLEUM & CHEM CORP
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