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C9 aromatic hydrocarbon lightening catalyst and lightening method thereof

A catalyst and aromatic technology, which is applied in the field of C9+ aromatics lightening catalyst and lightening, can solve the problems of low space velocity, high reaction temperature and pressure, industrial application limitations, etc., and achieves reduction of colloidal content and small loss of aromatic rings. , The effect of less side reactions of hydrogenation ring opening

Active Publication Date: 2009-06-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main methods for lightening heavy aromatics are pyrolysis and catalytic dealkylation. The speed is low, so that the industrial application of the technology is limited

Method used

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  • C9 aromatic hydrocarbon lightening catalyst and lightening method thereof
  • C9 aromatic hydrocarbon lightening catalyst and lightening method thereof
  • C9 aromatic hydrocarbon lightening catalyst and lightening method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0046] The Ir-Sn bimetallic catalyst described in the present invention is prepared.

[0047] (1) Preparation of γ-alumina carrier.

[0048] Take 135 grams of aluminum hydroxide powder (manufactured by Condea Company, brand SB) and add 200 grams of deionized water, and stir to make it slurry. According to the amount of 7.5 milliliters per 100 grams of SB powder, add nitric acid with a volume ratio of 1:1, add 30 grams of urea and 10.0 grams of hydrochloric acid solution with a concentration of 36.5% by mass, stir for 1 hour, then add 30 grams of kerosene and stir for 1 hour, The drop ball is formed in the oil ammonia column. The wet bulb was solidified in ammonia water with a concentration of 6.0% by mass for 1 hour, then filtered, washed 2 to 3 times with deionized water, dried at 60°C for 6 hours, and at 120°C for 10 hours, and then dried in dry air at 700 / 1 The gas / solid volume ratio was calcined at 600° C. for 4 hours to obtain the gamma-alumina carrier.

[0049] (2) Pr...

example 2

[0053] The catalyst was prepared according to the method of Example 1, except that the impregnating liquid used for impregnating the gamma-alumina carrier contained 0.1 mass % of Sn. The content of the active components of the prepared catalyst B was shown in Table 1.

example 3

[0055] The catalyst was prepared according to the method of Example 1, except that the impregnating solution used for impregnating Sn-containing alumina contained 1.8% by mass of Ir. The active component content of the prepared catalyst C was shown in Table 1.

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Abstract

The invention relates to a C9<+> aromatic hydrocarbon lightening catalyst, comprising a high-temperature-resistant inorganic oxide carrier and the following components accounted by taking the dry basis carrier as benchmark: 0.01-10.0 weight percent of hydrogenation metal, 0.01-1.0 weight percent of IVA-group metal and 0.1-5.0 weight percent of halogen; wherein, the hydrogenation metal is selected from iron, cobalt, nickel and iridium. The catalyst is used for lightening C9<+> heavy aromatic hydrocarbon. The catalyst has high lightening transformation ratio, high aromatic hydrocarbon yield and less carbon deposition; and the catalyst can effectively lower final boiling point and gum level of the heavy aromatic hydrocarbon.

Description

technical field [0001] The present invention is a C 9 + Aromatics lightening catalyst, its preparation method and lightening method, specifically, a double metal-containing heavy aromatics lightening catalyst, its preparation method and a method for using the catalyst to lighten heavy aromatics . Background technique [0002] Heavy aromatics generally refer to the C contained in oil produced by catalytic reforming, disproportionation and isomerization reactions and ethylene cracking hydrogenated gasoline. 9 ~C 16 mono- or bicycloalkylaromatics. For a long time, heavy aromatic resources have not been rationally and fully utilized, except for a small amount used as solvent and extraction of C 9 、C 10 Except for monomeric aromatics, they are generally directly blended into gasoline pools as fuel. However, it is not advisable to directly use heavy aromatics as fuels from both economic and environmental point of view. On the one hand, heavy aromatics can be converted into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62C07C4/18C07C15/02
Inventor 蔡迎春马爱增潘锦程
Owner CHINA PETROLEUM & CHEM CORP
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