Catalyst for Reducing Olefins from Reformate Aromatics with Long-period Operation

A technology for olefin catalysts and reformed oils, which is applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, and hydrocarbon oil treatment. It can solve the problems of low service life of reformed oil de-olefin catalysts, and achieve short service life and reduce side reactions. , the effect of prolonging life

Active Publication Date: 2019-11-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The invention relates to a reformed oil aromatic hydrocarbon deolefin catalyst, which mainly solves the problem that the service life of the reformed oil deolefin catalyst is relatively low in the past

Method used

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  • Catalyst for Reducing Olefins from Reformate Aromatics with Long-period Operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Contains 3.0wt% LaO, 1.0wt% Na 2 USY of O (SiO 2 / Al 2 o 3 than 7.0), and 25.0wt% alumina catalyst 60.0g, using SnSO 4 Solution (containing Sn3.0wt%) 38g is impregnated with equal volume, after drying at 550°C and roasting for 3 hours, use Mg(NO 3 ) 2 35 g of the solution (containing Mg 1.0 wt %) was impregnated with equal volume, dried at 520° C. and calcined for 3.0 hours to obtain catalyst A.

[0031] Get 3.0g catalyst and carried out reformed oil non-hydrogenation deolefin test in fixed-bed reactor, raw material is reformed oil, bromine index is 1200 mg Br / 100 gram oil (this reaction raw material evaluation that all following embodiments adopt) . The activity calculation formula is as follows:

[0032]

[0033] Reaction pressure: 2.0MPa, temperature: 160°C, space velocity: 10.0 hours -1 , the activity result was 95% in 2 hours, 90.5% in 100 hours, and 82.0% in 200 hours.

Embodiment 2

[0035] Contains 2.0wt% LaO and 2.0wt% CeO 2 , 0.5wt%Na 2 USY of O (SiO 2 / Al 2 o 3 than 12.0), and 25.0wt% alumina catalyst 60.0g, using Ga(NO 3 ) 3Solution (containing Ga 1.5wt%) 40g is impregnated with equal volume, dried at 500°C and calcined for 4 hours, using Ca(NO 3 ) 2 36 g of the solution (containing 0.5 wt % of Ca) was impregnated with an equal volume, dried at 550° C. and calcined for 2.5 hours to obtain catalyst B.

[0036] Take 3.0g of catalyst and carry out reformate non-hydrogenation deolefin test in fixed bed reactor, reaction pressure: 5.0MPa, temperature: 180℃, space velocity: 8.0 hours -1 , the activity results were 95.0% in 2 hours, 88.0% in 100 hours, and 80.1% in 200 hours.

Embodiment 3

[0038] Contains 2.0wt% LaO and 2.0wt% CeO 2 , 0.5wt%Na 2 USY of O (SiO 2 / Al 2 o 3 ratio 12.0), and 60.0g of catalyst 10.0wt% of alumina, using Ga(NO 3 ) 3 Solution (containing Ga 1.5wt%) 40g is impregnated with equal volume, dried at 500°C and calcined for 4 hours, using Ca(NO 3 ) 2 36 g of the solution (containing 0.5 wt % of Ca) was impregnated with an equal volume, dried at 600° C. and calcined for 2.0 hours to obtain catalyst C.

[0039] 3.0g of catalyst was taken in a fixed bed reactor to carry out reformate non-hydrogenation deolefin test, reaction pressure: 3.0MPa, temperature: 170°C, space velocity: 5.0 hours -1 , the activity results were 96.0% in 2 hours, 92.0.0% in 100 hours, and 89.0% in 200 hours.

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Abstract

The invention relates to a reformate aromatic hydrocarbon olefin reduction catalyst capable of operating in a long-period manner. In the prior art, the activity center is not well matched with the reaction diffusion so as to cause the rapid deactivation and the short operation life of the catalyst. A purpose of the present invention is mainly to solve the problems in the prior art. The reforming oil aromatic hydrocarbon olefin reduction catalyst comprises, by weight, 0.01-15% of a lanthanum-based element or a mixture thereof, 0.01-8% of the oxide of one or a plurality of elements selected fromNa, K, Mg, Ca, Sr and Ba, 0.01-10% of one or a plurality of elements selected from Ga, Sn, In, Ge and Bi, and 40-90% of a Y type molecular sieve. With the technical scheme, the problems in the priorart are well solved. The reformate aromatic hydrocarbon olefin reduction catalyst has advantages of good activity and long service life, and can be used in the industrial production of aromatic hydrocarbon olefin reduction.

Description

technical field [0001] The invention belongs to a catalyst for reducing olefins in reformed oil aromatics. [0002] Background of the invention [0003] The invention relates to a catalyst for reducing olefins in reformed oil aromatics, which specifically improves the operating life of the catalyst. [0004] Aromatics are the basic raw materials of the petrochemical industry, which mainly come from aromatics complexes. The reformed oil aromatic products after catalytic reforming reaction all contain a certain amount of olefin impurities. The chemical properties of olefins are active, not only easy to polymerize to form colloids, but also easy to react with other components to form non-ideal components, which will have a great impact on the quality of aromatic products and the operation of the device. [0005] Subsequent production processes of aromatics from reformate or other pyrolysis gasoline, such as xylene adsorption separation process, are particularly sensitive to ol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J29/16C10G29/16
CPCB01J29/088B01J29/166C10G29/16C10G2300/1037
Inventor 王月梅孔德金李为王雨勃龚燕芳
Owner CHINA PETROLEUM & CHEM CORP
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