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Catalyst, reaction device and reaction method for mild hydrocracking of f-t synthetic wax oil

A hydrocracking and catalyst technology, applied in hydrocarbon oil cracking, molecular sieve catalysts, chemical instruments and methods, etc., to achieve high activity and selectivity, unique three-dimensional structure, and high heat transfer efficiency

Active Publication Date: 2016-08-17
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of problems such as mass transfer and heat transfer brought by the internal diffusion resistance of large particle catalysts existing in the prior art, the object of the invention is to provide a catalyst, reaction device and Response method

Method used

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  • Catalyst, reaction device and reaction method for mild hydrocracking of f-t synthetic wax oil
  • Catalyst, reaction device and reaction method for mild hydrocracking of f-t synthetic wax oil
  • Catalyst, reaction device and reaction method for mild hydrocracking of f-t synthetic wax oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Mix 4.2g Ni fiber (diameter 8μm, length 2-3mm), 7.5g 80-100 mesh SAB carrier particles, 1.4g cellulose, appropriate amount of industrial ethanol, mix them into 1L water for beating, and make a thin layer with a diameter of 160mm on a paper forming machine Filter cake, put the obtained thin-layer filter cake in the air to dry at 110°C, oxidize in the air at 500°C for 1 hour, and bake in the hydrogen atmosphere at 950°C for 1 hour, so that the contact points of Ni microfibers are sintered and fused to form SAB Pt / SAB catalyst precursor with support particles firmly bound in a three-dimensional network of Ni microfibrils. Then measure an appropriate amount of chloroplatinic acid solution, impregnate the catalyst using an equal volume impregnation method, dry at 110°C for 12h, and roast at 550°C for 5h to obtain a Ni fiber structured Pt / SAB catalyst (the mass content of the impregnated active component Pt is 0.8%), and its optical microscope appearance is as follows figur...

Embodiment 2

[0044] Mix 4.2g Cu fiber (diameter 8μm, length 2-3mm), 4.0g 80-100 mesh SAB carrier particles, 1.4g cellulose, appropriate amount of industrial ethanol, mix them into 1L water for beating, and make a thin layer with a diameter of 160mm on a paper forming machine For filter cake, dry the obtained thin layer filter cake in air at 110°C, oxidize in air at 500°C for 1 hour, and bake in hydrogen atmosphere at 850°C for 1 hour, so that the contact points of Cu microfibers are sintered and fused to form SAB Pt / SAB catalyst precursor with support particles firmly bound in a three-dimensional network of Cu microfibrils. Then measure an appropriate amount of chloroplatinic acid solution, impregnate the catalyst with an equal volume impregnation method, dry at 110 °C for 12 h, and roast at 550 °C for 6 h in a nitrogen atmosphere to obtain a Cu fiber-structured Pt / SAB catalyst (the impregnated active component Pt The mass content is 0.8%).

Embodiment 3

[0046] Immerse 4.2g Al fiber (diameter 50μm, length 2~3mm) in 1% silica sol 1%ZMS-5 seed crystal suspension for 10s, take it out and dry it in the shade, roast it, then add 34.8% orthosilicate ethyl ester and 35.6% Tetra Propyl ammonium hydroxide was crystallized in the crystallization solution of 0.3% sodium metaaluminate for 48 hours, and then washed and dried at 110°C to obtain a fiber growth molecular sieve carrier. Weigh 6.7g of the prepared fiber-growth molecular sieve and impregnate it with an equal volume of chloroplatinic acid solution, dry at 110°C for 12h, and calcinate at 550°C for 6h to prepare an Al fiber-structured Pt / Al catalyst (the impregnated active component Pt The mass content is 0.8%), and its scanning electron microscope is as follows image 3 shown.

[0047] The catalysts of Comparative Examples 1-2 and Examples 1-3 were used for the mild hydrocracking reaction of F-T synthetic wax oil. The reactions in which the catalysts of Examples 1-3 participate ...

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Abstract

The invention discloses a catalyst for mild hydrocracking of F-T (Fischer-Tropsch) synthetic wax oil. The catalyst is basically prepared from the following components by mass percent: 0.1%-1% of catalytic active components, 30%-65% of carrier and the balance being metal fiber structured materials. The invention further provides a rectifying reaction device for the mild hydrocracking of F-T synthetic wax oil, wherein the catalyst disclosed by the invention is placed in a reaction section of the device. The invention also provides a method for the mild hydrocracking of F-T synthetic wax oil, which adopts the catalyst disclosed by the invention. The catalyst prepared by the invention has the advantages of being unique in three-dimensional structure, high in mass transfer efficiency, high in heat transfer efficiency and random in shape design. The method for the mild hydrocracking of F-T synthetic wax oil has high activity and selectivity, and the gasoline and diesel oil product selectivity can reach up to 92.2% when the conversion rate is 98.3%.

Description

technical field [0001] The invention relates to a catalyst, a reaction device and a reaction method for mild hydrocracking of F-T synthetic wax oil. Background technique [0002] Fossil fuels such as coal, oil, and natural gas are the main energy sources currently used by humans. With the rapid consumption of oil resources in the world, the problem of oil shortage has become increasingly prominent. my country's energy structure is characterized by rich coal, little gas, and poor oil. Converting coal and natural gas into clean liquid fuels has become the focus of global attention. [0003] F-T synthesis is a process in which coal and natural gas are used as raw materials to prepare synthesis gas, and then various hydrocarbons and organic compounds are generated from the synthesis gas. The F-T synthesis products are mainly C4-C70 hydrocarbons and a very small amount of oxygen-containing compounds. More than 40% of wax oil is produced in the low temperature F-T synthesis (LT...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/072B01J29/44B01D3/32B01J8/02C10G47/20
Inventor 曹发海黄瑜杨超蒋坚丁嘉王翔宇路勇
Owner EAST CHINA UNIV OF SCI & TECH
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