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Catalyst for removing olefin in reformed oil and preparation method of catalyst

A technology for reforming to generate oil and catalyst, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of significant loss of aromatics, high equipment requirements, and difficulty in taking full account of the depth of hydrogenation reaction, etc. To achieve the effect of good response performance and long service life

Active Publication Date: 2013-04-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst contains noble metal components, which is better for removing olefins in benzene, but for C 6 ~C 8 Aromatics products, the depth of hydrogenation reaction is difficult to fully consider, and the loss of aromatics is more significant
In addition, due to the relatively high reaction pressure and temperature, hydrogen is also required, so the requirements for equipment are relatively high
The catalyst needs to be vulcanized when starting up, and the operation process is cumbersome

Method used

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  • Catalyst for removing olefin in reformed oil and preparation method of catalyst
  • Catalyst for removing olefin in reformed oil and preparation method of catalyst

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Experimental program
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Effect test

preparation example Construction

[0018] The preparation method of a catalyst provided by the present invention comprises the steps of thoroughly mixing MCM series molecular sieves or Y molecular sieves with modified sepiolite, extrusion molding, drying and roasting.

[0019] The preparation method of another catalyst containing modified components provided by the present invention includes fully mixing MCM series molecular sieves or Y molecular sieves with modified sepiolite and the precursors of the modified components, extrusion molding, drying, and roasting; Or fully mix MCM series molecular sieves or Y molecular sieves with modified sepiolite, extrude into strips, impregnate with a solution made of compounds containing modified components, dry and roast the impregnated solids.

[0020] In the above method, the preparation method of the modified sepiolite is to immerse the sepiolite with an acid solution, then filter, wash with water, dry, and roast. The temperature of the treatment is 30-90°C, preferably 6...

example 1

[0029] Preparation of the deolefinization catalyst of the present invention.

[0030] (1) Preparation of modified sepiolite

[0031] Get 100 grams of sepiolite (produced by Hunan Xiangtan Hongyan Sepiolite Co., Ltd., containing Al 2 o 3 8.1% by mass, SiO 2 67.4 mass%, MgO 18.3 mass%, F 1.1 mass%, K 2 O 0.85, Fe 2 o 3 2.2% by mass), adding 1000 milliliters of hydrochloric acid with a concentration of 15% by mass, performing ion exchange at 80°C for 48 hours, filtering and washing the filter cake at 120°C for 12 hours, and roasting at 550°C for 4 hours, the obtained modified sepiolite contains Al 2 o 3 6.3% by mass, SiO 2 79 mass%, MgO 10.9 mass%, F 0.6 mass%, K 2 O 0.7, Fe 2 o 3 1.6% by mass.

[0032] (2) Preparation of catalyst

[0033] Get 50 grams of DOSY molecular sieves (produced by Changling Catalyst Branch Company, containing Al 2 o 3 20.5% by mass, SiO 2 66.2% by mass, 3.8% by mass of lanthanum oxide, 7.7% by mass of cerium oxide, P 2 o 5 0.94% by mass...

example 2

[0035] Prepare catalyst by the method for example 1, difference is (2) step 70 gram DOSY molecular sieves are mixed with 30 gram modified sepiolite, the catalyst A that is obtained after extrusion, drying, roasting 2 The composition is shown in Table 1.

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Abstract

The invention discloses a catalyst for removing olefin in reformed oil, which consists of 40-90wt% of MCM-series molecular sieve or Y-series molecular sieve, and 10-60wt% of modified sepiolite, wherein the modified sepiolite is sepiolite which is processed by an acid treatment, and contains 8-16wt% of magnesium oxide. The catalyst disclosed by the invention is used for reducing the olefin in the reformed oil, and is excellent in reaction performance, regenerative for many times, and comparatively long in service life.

Description

technical field [0001] The invention relates to a catalyst for removing olefins in reformed oil and a preparation method thereof, in particular to a catalyst for reducing olefins containing molecular sieves and a preparation method thereof. Background technique [0002] The oil produced by catalytic reforming is rich in aromatics and solvent oil, and also contains a small amount of olefins. To produce qualified aromatics and solvent oils, the olefins must be removed, otherwise the bromine value, corrosion and pickling color of aromatics products are unqualified. A small amount of olefins in the reformed oil will polymerize in the extraction solvent to contaminate the extraction solvent and cause corrosion of the extraction system equipment. At the same time, it will also affect the performance of downstream equipment, adsorbents and catalysts to varying degrees. influences. In addition, olefins, especially diolefins, are relatively active, and are easy to form colloids and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70B01J29/08C10G29/00C10G45/12
Inventor 臧高山马爱增张大庆任坚强张玉红王嘉欣
Owner CHINA PETROLEUM & CHEM CORP