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Hydrogenation method for cracking hydrocarbon having nine carbon atoms or more

A technology for cracking carbon and hydrogen, which is used in hydrocarbon cracking to produce hydrocarbons, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. problems such as low hydrogenation activity, to achieve the effect of improving stability, increasing reducibility, and reducing generation

Active Publication Date: 2009-01-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the technical problem of low catalyst hydrogenation activity, low olefin conversion rate and low diene hydrogenation rate existing in the prior art. hydrogen method

Method used

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  • Hydrogenation method for cracking hydrocarbon having nine carbon atoms or more
  • Hydrogenation method for cracking hydrocarbon having nine carbon atoms or more
  • Hydrogenation method for cracking hydrocarbon having nine carbon atoms or more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] With nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, the pseudo-boehmite powder was peptized for 24 hours to obtain an alumina sol with a solid content of 5% alumina, and the temperature of the sol was kept at 60°C. Nickel chloride was dissolved in an appropriate amount of water to obtain a nickel salt solution of 0.10 g nickel / ml. Add an appropriate amount of nickel salt solution into the alumina sol, age at 60° C. for 24 hours, and then dry to obtain the corresponding catalyst precursor. The catalyst precursor was calcined at 400°C for 4 hours to obtain oxidized NiO / Al 2 o 3 The catalyst, with a nickel content of 50.0%, is designated as Catalyst 1.

Embodiment 2

[0015] The preparation and operating conditions of the catalyst are the same as in Example 1, except that the precursor of the nickel salt solution is changed to be nickel acetate, the concentration of the nickel salt solution is 0.04 g nickel / ml, and the nickel content is 50.0%, which is referred to as catalyst 2.

Embodiment 3

[0017] With nitric acid in [H + ] / [AlOOH] molar ratio of 0.25, the pseudo-boehmite powder was peptized for 24 hours to obtain an alumina sol with a solid content of 5% alumina, and the temperature of the sol was kept at 60°C. In terms of molar ratio, basic nickel carbonate:ammonia water:ammonium carbonate=1:6.0:1.5, add an appropriate amount of water to obtain a nickel-ammonia complex solution of 0.10 g nickel / ml. Add the nickel ammonia complex solution to the alumina sol, heat and decompose the complexed nickel ions at 95° C. for 8 hours, and then dry or filter to obtain the corresponding catalyst precursor. The catalyst precursor was calcined at 400°C for 4 hours to obtain oxidized NiO / Al 2 o 3 The catalyst, with a nickel content of 50.0%, is designated as Catalyst 3.

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Abstract

The invention relates to a method for hydrogenation used during cracking C9 and more than C9 hydrocarbons, mainly solving the technical problems in the prior art of low hydrogenation activity, low conversion rate of alkene and low hydrogenation rate of diene. Through adopting the method for hydrogenation used during cracking C9 and more than C9 hydrocarbons and taking C9 and more than C9 hydrocarbon raw oil and hydrogen as raw materials, contact reaction between the raw materials and a catalyst is carried out at a temperature of between 30 and 100 DEG C, under the conditions that the pressure is between 2.0 and 3.5MPa, the air speed of the raw oil is between 1.0 and 2.5 hour<-1> and the hydrogen / oil volume ratio is between 100 to 1 and 400 to 1; therefore, unsaturated compositions in the raw oil such as diene, alkenyl arene, indene and dicyclopentadiene are converted into saturated hydrocarbon or alkyl arene; moreover, the catalyst comprises the compositions in percentage by weight that (a) 5 to 75 percent of nickel or nickel oxide and (b) the balance being carrier alumina; the precursor of the carrier alumina is aluminum sol, and the precursor of nickel is at least one of nickel acetate, nickel chlorite or nickel ammine; and the technical proposal solves the problems better, and can be used in the industrial production for hydrogenation during cracking C9 and more than C9 hydrocarbons.

Description

technical field [0001] The invention relates to a method for cracking and hydrogenating hydrocarbons with carbon nine and above. Background technique [0002] Cracked carbon nine and above hydrocarbon fractions have unstable composition, high colloid content and many impurities. The cracking of carbon nine and above hydrocarbons contains a large number of polymerizable active components, mainly including styrene and its derivatives, dicyclopentadiene and its derivatives, indene and its derivatives, etc. The catalyst system for cracking carbon nine and above hydrocarbons to increase the production of BTX aromatics by hydrodealkylation requires a working temperature of 350-500°C. Such a high reaction temperature will inevitably lead to the rapid polymerization of the active components in the cracked carbon nine and above hydrocarbons and coke formation, which will seriously affect the activity and life of the hydrodealkylation catalyst. Therefore, the cracking of C9 and abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C4/06B01J23/755
Inventor 刘仲能王建强侯闽渤王德举赵多吴征
Owner CHINA PETROLEUM & CHEM CORP
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