Hydroconversion composition and process for hydroconversion of Fischer-Tropsch synthetic wax

A Fischer-Tropsch synthetic wax and hydroconversion technology, which is applied in chemical instruments and methods, lubricating compositions, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems affecting process economy, light base oil group Solve problems such as large loss of viscosity index, low yield of light and heavy base oils, etc., to achieve the effect of improving product yield and performance

Active Publication Date: 2020-12-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above process, in the hydrodewaxing operation unit, the disadvantages of using the traditional hydroisomerization dewaxing catalyst are that it is difficult to make light and Heavy base components meet both pour point and viscosity index requirements
Generally, when the pour point of the heavy base oil component is qualified, the viscosity index loss of the light base oil component is relatively large, and it is difficult to produce API III light lubricating base oil products with a viscosity index > 120; When the viscosity index of the heavy base oil component is qualified, the heavy component cannot be used as a qualified lubricating oil base oil product
When traditional hydrocracking catalysts are used, whether whole fraction or broad fraction waxy oil is used as feed, most light and heavy base oil products can meet the requirements of pour point and viscosity index at the same time, but the process produces a large amount of cracked products , the yield of light and heavy base oil is too low, seriously affecting the process economy

Method used

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  • Hydroconversion composition and process for hydroconversion of Fischer-Tropsch synthetic wax
  • Hydroconversion composition and process for hydroconversion of Fischer-Tropsch synthetic wax
  • Hydroconversion composition and process for hydroconversion of Fischer-Tropsch synthetic wax

Examples

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Embodiment 1

[0030] Example 1: The hydroconversion composition includes a hydrogenation pretreatment catalyst, a combined catalyst and a hydrofining catalyst; the combined catalyst is composed of catalyst A and catalyst B in a volume ratio of 1:10 to 10:1, and the catalyst A is composed of aluminum phosphate molecular sieves with AEL structure as a carrier, loaded with active metal platinum and / or palladium and / or iridium, and catalyst B is made of aluminum phosphate molecular sieves with ATO structure as a carrier, loaded with active metal platinum and / or Composed of palladium and / or iridium; the hydrogenation pretreatment catalyst is supported by heat-resistant inorganic oxides, one or more active metals of cobalt, nickel, molybdenum and tungsten loaded on the carrier, and selected from nitrogen, phosphorus , sulfur or boron in one or more additives; the hydrofinishing catalyst is supported by a heat-resistant inorganic oxide, and one or more active metals in platinum, palladium and iridi...

Embodiment 2

[0031] Embodiment 2: The hydroconversion composition includes a hydrogenation pretreatment catalyst, a combined catalyst and a hydrofinishing catalyst; the combined catalyst is composed of catalyst A and catalyst B in a volume ratio of 1:10 or 10:1, and the catalyst A is composed of aluminum phosphate molecular sieves with AEL structure as a carrier, loaded with active metal platinum and / or palladium and / or iridium, and catalyst B is made of aluminum phosphate molecular sieves with ATO structure as a carrier, loaded with active metal platinum and / or Composed of palladium and / or iridium; the hydrogenation pretreatment catalyst is supported by heat-resistant inorganic oxides, one or more active metals of cobalt, nickel, molybdenum and tungsten loaded on the carrier, and selected from nitrogen, phosphorus , sulfur or boron in one or more additives; the hydrofinishing catalyst is supported by a heat-resistant inorganic oxide, and one or more active metals in platinum, palladium and...

Embodiment 3

[0034] Embodiment 3: As the optimization of the above-mentioned embodiment, the aluminum phosphate molecular sieve with AEL structure is one or both of molecular sieve SAPO-11 and molecular sieve MeAPO-11 with AEL structure, and Me in molecular sieve MeAPO-11 is One or more of Zn, Mg, Mn, Co, Cr, Cu, Cd and Ni. The molecular sieve with ATO structure is one or two kinds of molecular sieve SAPO-31 and molecular sieve MeAPO-31, and Me in molecular sieve MeAPO-31 is one of Zn, Mg, Mn, Co, Cr, Cu, Cd and Ni or two or more. The acid amount of catalyst A is 2.1mmol(NH3) / g to 2.5mmol(NH3) / g, the acid amount of catalyst B is 1.9mmol(NH3) / g to 2.8mmol(NH3) / g, the active metal in catalyst A The mass loading of the active metal in catalyst B is 0.1wt% to 0.5wt%, and the mass loading of the active metal in catalyst B is 0.3wt% to 0.8wt%. In the hydrogenation pretreatment catalyst, the mass loading amount of the active metal is 20wt% to 55wt%, and the mass loading amount of the auxiliary ...

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Abstract

The invention relates to the technical field of Fischer-Tropsch synthesis product hydro-conversion, and relates to a hydroconversion composition and a Fischer-Tropsch synthesis wax hydroconversion method, and the hydroconversion composition comprises a hydrogenation pretreatment catalyst, a combined catalyst and a hydrofining catalyst. According to the invention, the Fischer-Tropsch synthetic waxfraction of a temperature of 280-660 DEG C is subjected to simple hydrogenation pretreatment, fractionation, hydroisomerization, hydrofining and fractionation processes, such that lubricating oil baseoil with a low pour point and a high viscosity index can be prepared with a high yield. The technical core of the method is a hydroisomerization process based on a combined AEL and ATO structure aluminophosphate molecular sieve catalyst, so that each component in a wide-distillation-range raw material can be highly selectively converted into an isomerization product, and the yield and the performance of the product are improved at the same time.

Description

technical field [0001] The invention relates to the technical field of hydroconversion of Fischer-Tropsch synthesis products, and relates to a hydroconversion composition and its application in improving the yield of base oils produced from Fischer-Tropsch synthesis waxes with low pour point and high viscosity index, and also includes a Method for hydroconversion of Fischer-Tropsch waxes. Background technique [0002] With the increasingly heavy and inferior trend of crude oil and the increasing market demand for high-quality oil products and chemical raw materials, the preparation of liquid fuels and chemicals from coal through synthesis gas has become a hot spot of concern. Fischer-Tropsch synthesis (Fischer-Tropsch synthesis), referred to as FT reaction, is based on synthesis gas (CO and H 2 ) is a technological process for synthesizing liquid fuels and chemicals mainly composed of long-chain alkanes under catalysts (such as iron-based, cobalt-based, etc.) and appropriat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02C10M177/00B01J29/83B01J23/89
CPCC10G67/02C10M177/00B01J29/83B01J23/8993
Inventor 王从新田志坚郭世清李鹏郭棣潘振栋徐刚曲炜张亚胜潘多峰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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