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Adsorbent for removing organic chlorides in hydrocarbon-containing substance flow and preparation method thereof

A technology for organic chloride and hydrocarbon streams, which is applied in chemical instruments and methods, refined hydrocarbon oil, and other chemical processes, and can solve the problems of low dynamic adsorption rate, short service life, and limited adsorption capacity.

Active Publication Date: 2014-03-05
SHANGHAI LVQIANG NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although 13X molecular sieve has a certain removal effect on organic chlorine, its total adsorption capacity is limited, its dynamic adsorption rate is low, and its service life is short.

Method used

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  • Adsorbent for removing organic chlorides in hydrocarbon-containing substance flow and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take the ratio of silicon to aluminum (SiO 2 / Al 2 o 3 ) is 2.2 NaKLSX former powder 100g and 1500ml concentration is the ZnCl of 0.8mol / l 2 The solution was mixed evenly, then placed in a small exchange tank at 50°C, exchanged under stirring for 1 hour, filtered and washed with suction. The resulting sample was redissolved in 1500 ml of the above ZnCl 2 The solution was exchanged for the second time, suction filtered and washed again, and the obtained sample was dried in an oven at 90° C. for 3 hours to obtain a modified zeolite molecular sieve with a zinc ion exchange degree of 78%. Weigh 70g of the above-mentioned modified zeolite molecular sieve, 15g of diatomaceous earth, and 15g of attapulgite, mix them evenly, and put them into a small rotating disk. During the rotation, stir the mixed powder with a spatula, and slowly add water to form particles. , a total of 18.5 g of moisture was added before the microparticles began to stick together to form the specified...

Embodiment 2

[0026] Use the method that embodiment 1 proposes to prepare adsorbent, but change NaKLSX former powder into silicon-aluminum ratio (SiO 2 / Al 2 o 3 ) is the 13X original powder of 3.0, and the rest of the steps are the same, and the sample AD-2 is prepared, and the performance results of the sample are listed in Table 1.

Embodiment 3

[0028] Take the ratio of silicon to aluminum (SiO 2 / Al 2 o 3 ) is 2.2 NaKLSX former powder 100g and 1500ml concentration is the ZnCl of 1.0mol / l 2 The solution was mixed evenly, then placed in a small exchange tank at 60°C, exchanged under stirring for 1 hour, filtered and washed with suction. The resulting sample was redissolved in 1500 ml of the above ZnCl 2 The solution was exchanged for the second time, suction filtered and washed again, and the obtained sample was dried in an oven at 90° C. for 3 hours to obtain a modified zeolite molecular sieve with a zinc ion exchange degree of 86%. The rest of the molding steps were the same as in Example 1, and the sample AD-3 was prepared, and the performance results of the sample are listed in Table 1.

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Abstract

The invention relates to an adsorbent for removing organic chlorides in a hydrocarbon-containing substance flow and a preparation method thereof. The adsorbent comprises a modified zeolite molecular sieve, an inorganic macroporous material and a clay component. The zinc ion-modified zeolite molecular sieve contained in the adsorbent shows remarkably high reaction activity on organic chlorides; compared with the prior art, the adsorbent has relatively high selective adsorption capacity on organic chlorides; moreover, with wide temperature range and low reaction activity, the adsorbent is suitable for removing at least one organic chloride from a hydrocarbon-containing substance flow containing hydrogen, hydrocarbons and chlorides, and particularly suitable for deeply removing organic chlorides in the oil generated by a catalytic reforming reaction as well as the byproduct hydrogen.

Description

technical field [0001] The invention belongs to the field of refining hydrocarbon streams, and in particular relates to an adsorbent for removing organic chlorides in hydrocarbon streams and a preparation method thereof. Specifically, a modified molecular sieve adsorbent is used to remove organic chlorides in hydrocarbon streams. chloride. Background technique [0002] Catalytic reforming is a key process in oil refining, and its main reaction is the process of converting light petroleum fractions or naphtha range substances into aromatics under the dual-function catalyst. At present, catalytic reforming units use catalysts containing halogen and chlorine as the acidic component. In actual production operations, due to the water in the reforming raw material or the constant adjustment of water and chlorine balance in order to adapt to raw materials or adjust product indicators, the chlorine on the reforming catalyst will keep losing. In order to ensure the catalyst activit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30C10G25/00
Inventor 王鹏飞何秋平张佳周永贤朱琳
Owner SHANGHAI LVQIANG NEW MATERIALS CO LTD
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