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Preparation method of catalyst for removing trace amounts of alkenes in reformate

A technology for reforming to generate oil and olefin catalysts, which is applied in the direction of reforming naphtha, molecular sieve catalysts, chemical instruments and methods, etc., to achieve the effects of low operating costs, uniform dispersion, and labor cost savings

Active Publication Date: 2011-04-27
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalysts described in the above patents can effectively remove trace amounts of olefins in aromatics but are not loaded with metals or other modified substances

Method used

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  • Preparation method of catalyst for removing trace amounts of alkenes in reformate
  • Preparation method of catalyst for removing trace amounts of alkenes in reformate
  • Preparation method of catalyst for removing trace amounts of alkenes in reformate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Dissolve 75 grams of USY molecular sieves in 750ml of deionized water, heat up to 80°C under stirring, and add 3.01 grams of LaCl in turn 3 , 3.01 g CeCl 3 , 3.72 g (NH 4 ) 2 HPO 4 , continue to stir for 2 hours, filter and dry, and 18gAl 2 o 3 Mix evenly, add dilute nitric acid solution with a mass concentration of 3%, extrude the product into the form of a φ1.6 extrudate, dry at 110°C for 6 hours, and roast at 500°C for 4 hours in an air atmosphere to obtain La, Ce, and P-loaded Molecular sieve.

[0036] (2) 2.38 grams of MgCl 2 Dissolve in 150ml of deionized water, add 8ml of a solution containing cetyldimethylammonium chloride 30g / L to the above solution, and stir for 1 hour to obtain a highly dispersed solution of Mg.

[0037] (3) The molecular sieve obtained in step (1) was immersed in the solution obtained in step (2) for 12 hours, the product was dried at 110°C for 6 hours, and calcined at 500°C for 4 hours in an air atmosphere to obtain the finished ...

Embodiment 2

[0039](1) Dissolve 75 grams of USY molecular sieves in 750ml of deionized water, raise the temperature to 80°C under stirring, and add 4.51 grams of LaCl in turn 3 , 4.51 g CeCl 3 , 3.72 g (NH 4 ) 2 HPO 4 , continue to stir for 2 hours, filter and dry, and 16gAl 2 o 3 Mix evenly, add dilute nitric acid solution with a mass concentration of 3%, extrude the product into the form of a φ1.6 extrudate, dry at 110°C for 6 hours, and roast at 500°C for 4 hours in an air atmosphere to obtain La, Ce, and P-loaded Molecular sieve.

[0040] (2) 2.38 grams of MgCl 2 Dissolve in 150ml of deionized water, add 8ml of a solution containing cetyldimethylammonium chloride 30g / L to the above solution, and stir for 1 hour to obtain a highly dispersed solution of Mg.

[0041] (3) Immerse the molecular sieve obtained in step (1) in the solution obtained in step (2) for 12 hours, dry the product at 110°C for 6 hours, and roast at 500°C for 4 hours in an air atmosphere to obtain the finished c...

Embodiment 3

[0043] (1) Dissolve 75 grams of USY molecular sieves in 750ml of deionized water, raise the temperature to 80°C under stirring, and add 5.27 grams of LaCl in turn 3 , 5.27 g CeCl 3 , 3.72 g (NH 4 ) 2 HPO 4 , continue to stir for 2 hours, and filter and dry with 15gAl 2 o 3 Mix evenly, add dilute nitric acid solution with a mass concentration of 3%, extrude the product into the form of a φ1.6 extrudate, dry at 110°C for 6 hours, and roast at 500°C for 4 hours in an air atmosphere to obtain La, Ce, and P-loaded Molecular sieve.

[0044] (2) 2.38 grams of MgCl 2 Dissolve in 150ml of deionized water, add 8ml of a solution containing cetyldimethylammonium chloride 30g / L to the above solution, and stir for 1 hour to obtain a highly dispersed solution of Mg.

[0045] (3) The molecular sieve obtained in step (1) was immersed in the solution obtained in step (2) for 12 hours, the product was dried at 110°C for 6 hours, and calcined at 500°C for 4 hours in an air atmosphere to ob...

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Abstract

The invention relates to a preparation method of a catalyst for removing trace amounts of alkenes in reformate. The invention is characterized in that the catalyst comprises the following components in mass percent: (1) 60-90% of molecular sieve, (2) 2.0-10.0% of rare earth oxide, (3) 0.5-4.0% of alkaline earth oxide, (4) 1.0-6.0% of phosphoric anhydride and (5) balance of aluminum oxide. The preparation method comprises the following steps: (1) mixing the molecular sieve and deionized water, pulping, sequentially adding rare earth salts and phosphates, filtering, drying, evenly mixing with aluminum oxide, adding a dilute nitric acid solution for strip extrusion or ball molding, drying, and roasting in the air atmosphere to obtain a molecular sieve loaded with rare earth and phosphorus; (2) while stirring the salt solution of Mg or Ca at high speed, adding a surfactant to obtain a highly dispersed Mg or Ca solution; and (3) immersing the molecular sieve with the same volume obtained in the step (1) into the solution obtained in the step (2), drying the product, and roasting in the air atmosphere to obtain a finished catalyst product.

Description

Technical field: [0001] The invention relates to the field of petrochemical industry, in particular to a method for preparing a catalyst for removing trace olefins in reformed oil. technical background: [0002] Catalytic reforming / aromatics extraction is one of the main processing methods for producing chemical raw materials such as benzene, toluene and xylene (BTX). Catalytic reforming of naphtha fractions produces oils rich in aromatics and solvent oil fractions, while also containing small amounts of olefins. These olefins are active and easy to form colloids; the presence of olefins will also affect some subsequent processing processes. To produce qualified aromatics and solvent oil products, olefins must be removed. In the aromatics complex, all downstream units are equipped with a de-olefins process. [0003] At present, there are mainly two schemes for reformate deolefinization. One is the method of hydrofining, which needs to be operated under the condition of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80C10G35/095
Inventor 吴青于海斌侯章贵刘冠锋贺胜如臧甲忠赵虹邢淑建
Owner CHINA NAT OFFSHORE OIL CORP
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