Heavy aromatics lightened monolithic catalyst and preparation method thereof

A monolithic catalyst, a technology for lightening heavy aromatics, applied in physical/chemical process catalysts, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc. Complex, serious environmental pollution and other problems, to achieve the effect of ensuring hydrothermal stability, conducive to adsorption and diffusion, and less environmental pollution

Inactive Publication Date: 2014-11-19
CNOOC TIANJIN CHEM RES & DESIGN INST +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 to overcome the problems existing in the prior art such as complex preparation steps, low yield, serious environmental pollution, and decreased utilization rate of molecular sieves, and to provide an integral high-silicon-aluminum-ratio NaY molecular sieve carrier synthesized by dry rubber conversion and load active components as C 10 + Heavy aromatics hydrogenation transalkylation catalyst, and also provides the preparation method of the catalyst

Method used

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  • Heavy aromatics lightened monolithic catalyst and preparation method thereof
  • Heavy aromatics lightened monolithic catalyst and preparation method thereof
  • Heavy aromatics lightened monolithic catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Put kaolin into a muffle furnace, raise the temperature to 650°C at a rate of 2°C / min, and calcinate at 650°C for 5 hours to obtain metakaolin.

[0044] Weigh 4.4 grams of white carbon black (SiO 2 Content 89.6wt%), 4 grams of metakaolin, 2.27 grams of sodium hydroxide, 0.66 grams of water glass, 0.85 grams of directing agent, 4.5 grams of deionized water and 0.5 grams of scallop powder are put into the sesame seed cake and stirred and kneaded until uniform wetting state, the kneaded material is extruded into a strip-shaped reaction substrate, and the mixture ratio is 1.8Na 2 O: Al 2 o 3 :6SiO2 2 :17.5H 2 O. Put 9 grams of the formed reaction substrate into a polytetrafluoroethylene reactor with a water jacket interlayer, add 3.6 grams of deionized water to the outer jacket, and the reaction kettle will be statically crystallized at 150 ° C, and the crystallization time is 12 hours . After the reaction is finished, NaY molecular sieves are obtained by washing, fi...

Embodiment 2

[0049] Put kaolin into a muffle furnace, raise the temperature to 650°C at a rate of 2°C / min, and calcinate at 650°C for 5 hours to obtain metakaolin.

[0050] Weigh 5.6 grams of white carbon black, 4 grams of metakaolin, 3.17 grams of sodium hydroxide, 0.66 grams of water glass, 1 gram of directing agent, 6.8 grams of deionized water and 0.5 grams of scallop powder, put them into the sesame cake, stir and knead until uniform Wet state, the kneaded material is extruded into a strip-shaped reaction substrate, and the mixture ratio is 2.4Na 2 O: Al 2 o 3 :7SiO 2 :25.2H 2 O. Put 9 grams of the formed reaction substrate into a polytetrafluoroethylene reactor with a water jacket, add 3.6 grams of deionized water to the jacket, and statically crystallize the reactor at 140°C for 18 hours . After the reaction is finished, NaY molecular sieves are obtained by washing, filtering and drying.

[0051] The monolithic NaY molecular sieve is subjected to ammonium exchange according t...

Embodiment 3

[0055] Put kaolin into a muffle furnace, raise the temperature to 550°C at a rate of 2°C / min, and calcinate at 550°C for 6 hours to obtain metakaolin.

[0056] Weigh 6.65 grams of white carbon black, 4 grams of metakaolin, 5 grams of sodium hydroxide, 0.66 grams of water glass, 1.2 grams of directing agent, 11.6 grams of deionized water and 0.5 grams of scallop powder, put them into the sesame seed cake, stir and knead until uniform Wet state, the kneaded material is extruded into a strip-shaped reaction substrate, and the mixture ratio is 3.7Na 2 O: Al 2 o 3 :8SiO2 2 :40.7H 2 O. Put 9 grams of the formed reaction substrate into a polytetrafluoroethylene reactor with a water jacket interlayer, add 3 grams of deionized water to the outer jacket, and the reactor will be statically crystallized at 120 ° C, and the crystallization time is 24 hours . After the reaction is finished, NaY molecular sieves are obtained by washing, filtering and drying.

[0057] The monolithic Na...

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Abstract

The invention discloses a heavy aromatics lightened monolithic catalyst. The catalyst is prepared from 70-100 wt% of a monolithic NaY molecular sieve and 30-0 wt% of an active modified component, and is prepared by the method comprising the following steps: uniformly mixing and kneading a silicon source, metakaolin, a guiding agent, an alkali source and water, performing oligomer preforming, filling the preformed oligomer in a reaction still with a water jacket interlayer to be crystallized, wherein the formed oligomer and the water are filled at the mass ratio of 2-3 to 1, washing and drying the crystallized product to obtain the monolithic NaY molecular sieve, washing, exchanging, drying and dipping the active modified component to prepare the monolithic catalyst, in which the active modified component is one or more selected from salts of rare earth metals and transition metals. The invention further discloses a preparation method of the catalyst. The monolithic catalyst disclosed by the invention can achieve the purpose of increasing production of BTX (Benzene, Toluene and Xylene) arene and the high-quality disproportioned raw material. The preparation method disclosed by the invention has the advantages of simple steps, low preparation cost, and low environmental pollution.

Description

technical field [0001] The present invention relates to a C 10 + The invention relates to a heavy aromatic hydrocarbon hydrogenation transalkylation catalyst and a preparation method thereof, which belong to the field of inorganic catalytic carrier materials, and specifically provide a C 10 + A catalyst for increasing the production of BTX aromatics and high-quality disproportionation through hydroalkylation of heavy aromatics and light aromatics (benzene and / or toluene) and a preparation method. Background technique [0002] With the continuous improvement of my country's refining capacity and the successive commissioning of continuous reforming units in large petrochemical enterprises, the output of heavy aromatics has increased significantly, and the severity of reforming has increased, and the cut point has increased. C 10 + The content of heavy aromatics is getting higher and higher, among which the content of naphthalene series components is high and widely distrib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J31/26C07C15/04C07C15/06C07C15/08C07C4/18
CPCY02P20/52
Inventor 裴仁彦张耀日霍志萍范景新刘冠锋臧甲忠于海斌
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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