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Oil solubility compound-type suspended bed hydrocracking catalyst as well as preparation method thereof

A hydrocracking and catalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, hydrocarbon oil cracking, etc., can solve the problems of low effective metal content, large impact on the environment and people, and high catalyst preparation costs, reaching Avoid agglomeration and particle size, low toxicity and corrosion, and maintain the effect of long-term operation

Active Publication Date: 2014-08-13
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this patent are: (1) The catalyst (calculated as metal) is added in a large amount, exceeding 500 μg / g; (2) The catalyst needs to be vulcanized to be active
The shortcoming of this patent is: (1) N-benzoyl or N-aniline price is more expensive, causes the preparation cost height of catalyst, (2) the molecular weight of N-benzoyl or N-aniline is bigger, makes synthesis catalyst The mass content of available metals is relatively small, and the utilization rate of available metals is low. (3) Chloroform is used in the synthesis process, which is highly toxic and has a great impact on the environment and people.
The disadvantage of this patent is that the preparation process is relatively complicated, the whole process of inert gas protection is required, the reagents required for synthesis are also relatively expensive, and the catalyst is a single metal oil-soluble catalyst

Method used

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  • Oil solubility compound-type suspended bed hydrocracking catalyst as well as preparation method thereof
  • Oil solubility compound-type suspended bed hydrocracking catalyst as well as preparation method thereof
  • Oil solubility compound-type suspended bed hydrocracking catalyst as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In a 250ml reaction bottle, add 0.05mol of molybdenum trioxide to an aqueous solution containing 0.23mol of sodium sulfide, stir at room temperature until completely dissolved, add 20ml of petroleum ether and dropwise add 10g of 30% sulfuric acid, and then add 0.03mol of dinormal Butylamine and 0.03mol carbon disulfide were heated to 74°C, reacted for 4 hours, filtered and washed with denatured alcohol to obtain a yellow solid catalyst product (CAT1), with a yield of 80% and a molybdenum content of about 27%. figure 1 is the TG-DTG curve of CAT1, by figure 1 It can be seen that the catalyst of the present invention remains stable and does not decompose when the temperature is lower than 200°C, and decomposes when the temperature rises to around 340°C after entering the hydrogenation reactor.

Embodiment 2

[0042] In a 500ml reaction flask, add 0.25mol of tellurium dioxide to 250ml of 1mol / L Na2S solution, heat to 45°C until the tellurium dioxide is completely dissolved, then add 0.03mol of di-n-butylamine and 0.03mol of carbon disulfide to control the reaction temperature At 60°C, add 15% hydrochloric acid dropwise under stirring to adjust the pH value between 3 and 5, react for 4 hours, filter and wash with industrial alcohol to obtain a yellow solid catalyst product (CAT2), with a yield of 80% and a tellurium content of 19%.

Embodiment 3

[0044] In a 250ml reaction bottle, add 0.05mol sodium tungstate dihydrate, 0.23mol sodium sulfide, 100ml deionized water, and add 30% sulfuric acid to adjust the pH value to 2-4. After completion, add 0.05mol of di-n-butylamine, 25ml of petroleum ether, slowly add 0.05ml of carbon disulfide at room temperature, stir for 30 minutes, heat up to 80°C, react for 6h, filter and wash with denatured alcohol, and obtain a beige solid catalyst product (coded as CAT3 ), the yield is 85%, and the tungsten content is 15%.

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Abstract

The invention discloses an oil solubility compound-type suspended bed hydrocracking catalyst, wherein the catalyst is prepared by the following steps: 1) enabling compounds of metal elements in the VIB family, the VIIB family or the VIII family in a periodic table of elements as metal sources with alkali metal sulfide or alkali metal hydrosulfide according to the mole ratio of (0.5 to 1)-(2 to 1), thereby obtaining a metal element compound at a reduction state; 2) adding the metal element compound at the reduction state and amine substances into a reaction medium according to the mole ratio of (1:0.6)-(1 to 2), and meanwhile dropwise adding carbon disulfide with the corresponding quantity into the reaction medium according to the mole ratio of (1 to 1)-(2 to1) with the metal element compound at the reduction state, warming to react at the reaction temperature of 30-110 DEG C for 2-10 hours; 3) filtering and washing the product obtained by the step 2) so as to obtain the oil solubility compound-type suspended bed hydrocracking catalyst. The catalyst prepared by the invention can inhibit the coke yield, and improve the light oil yield.

Description

technical field [0001] The invention belongs to the technical field of direct coal hydroliquefaction / coal tar hydrocracking / inferior heavy oil hydrocracking. Specifically, the invention relates to an oil-soluble composite suspension bed hydrocracking catalyst and a preparation method thereof. Background technique [0002] Oil-soluble catalysts are organometallic compounds that can be dissolved in heavy oil as catalysts. When the oil-soluble catalyst is added to the raw material, it first dissolves in the raw material, and then decomposes into molecular-scale catalyst particles at a suitable temperature. Because organometallic compounds can be uniformly dispersed in heavy oil and fully contact with heavy oil and hydrogen, the purpose of effectively inhibiting coke formation can be achieved. The oil-soluble catalyst containing the same metal element has higher hydrogenation coke suppression activity than the water-soluble catalyst, and the catalyst addition amount (calculated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J27/047B01J27/057C10G47/10
Inventor 黄澎张晓静毛学锋王勇李培霖颜丙峰赵渊杜淑凤钟金龙胡发亭赵鹏常秋莲王光耀张帆
Owner CCTEG CHINA COAL RES INST
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