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Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the field of medium and low temperature coal tar full-fraction hydrocracking, can solve the problems of uneven heating of the catalyst, poor adaptability of raw materials, low liquid yield, etc., to achieve long cycle and short service life , the effect of high reactivity

Active Publication Date: 2021-02-09
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Coal tar hydrogenation technology can be divided into fixed bed technology, ebullating bed technology and moving bed technology. Among them, fixed bed technology is a relatively mature processing technology, but it has poor adaptability to raw materials, short operation cycle, uneven heating of the catalyst, and easy overheating. (Flying temperature refers to the phenomenon that the temperature in some parts of the reactor or in the entire reactor will rise significantly when the reactor is in an unstable operating state. When there is a small disturbance in the operating parameters
Disadvantages such as low liquid yield

Method used

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  • Hydrocracking catalyst and preparation method thereof
  • Hydrocracking catalyst and preparation method thereof
  • Hydrocracking catalyst and preparation method thereof

Examples

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Effect test

example 1

[0043]Weigh 39g of aluminum isopropoxide and add it to 90ml of isopropanol solution under vigorous stirring. When the water bath is heated to 82.5°C, reflux and stir the reaction for 4 hours, then store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml to the same amount of isopropanol solution and stir evenly to form a mixed solution, and then slowly drop the mixed solution into the alcoholysis solution; after the addition is complete, heat up and condense to reflux, and adjust the temperature of the water bath to 85 ℃, when the temperature rises to 70℃, use a peristaltic pump to add 250ml of distilled water and count for 1 hour; at a water bath temperature of 85℃, add phosphoric acid, Ni(NO3)2·6H2O isopropanol solution, (NH4)10W12O41·XH2O aqueous solution without adding NH4F aqueous solution (the feeding time interval is 1h, the content of phosphoric acid (calculated by P) is 1wt% in weight percentage, the content of NiO is 6.9wt...

example 2

[0045]Weigh 39g of aluminum isopropoxide and add it to 90ml of isopropanol solution under vigorous stirring. When the water bath is heated to 82.5°C, reflux and stir the reaction for 4 hours, then store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml to the same amount of isopropanol solution and stir evenly, then slowly drip the mixture into the alcoholysis solution; after the addition is complete, heat up and condense to reflux, adjust the temperature of the water bath to 85℃, and wait until the temperature rises to 70 When the temperature is ℃, use the peristaltic pump to add 250ml of distilled water and count for 1h; at the temperature of the water bath at 85℃, add phosphoric acid, Ni(NO3)2·6H2O isopropanol solution, (NH4)10W12O41·XH2O aqueous solution, NH4The aqueous solution of F (in which the feeding time interval is 1h, the content of phosphoric acid (calculated as P) in weight percentage is 1wt%, the content of NiO is 6....

example 3

[0047]Weigh 39g of aluminum isopropoxide and add it to 90ml of isopropanol solution under vigorous stirring. When the water bath is heated to 82.5°C, reflux and stir the reaction for 4 hours, then store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml to the same amount of isopropanol solution and stir evenly, then slowly drop the mixture into the alcoholysis solution; after the addition is complete, heat up and condense to reflux, then adjust the temperature of the water bath to 85℃, and wait until the temperature rises. At 70℃, use a peristaltic pump to add 250ml of distilled water and count for 1h; at 85℃ water bath temperature, add phosphoric acid, Ni(NO3)2·6H2O isopropanol solution, (NH4)10W12O41·XH2O aqueous solution, add NH4The aqueous solution of F (in which the feeding time interval is 1h, the content of phosphoric acid (calculated as P) in weight percentage is 1wt%, the content of NiO is 6.9wt%, WO3The content is 24wt%, ...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst includes an active component and a carrier, and the active component is NiO and WO 3 , the support is AlOOH and TiO 2 The composite carrier, the auxiliary agent contains P, and is prepared by a complete liquid phase method. When the hydrocracking catalyst provided by the present invention and the catalyst in the preparation method thereof are used for hydrocracking of medium-low temperature coal tar, it can greatly promote its lightening under the premise of ensuring a relatively high liquid yield, and can The molar H / C of coal tar has been increased from 1.153 to above 1.556 for fuel oil, even after the catalyst is optimized, it can reach 1.603, thus solving the problem of coking and deactivation on the surface of the catalyst caused by the uneven heat distribution of the traditional fixed bed catalyst It is difficult for industrialization, and has the advantages of relatively simple technological process and convenient operation.

Description

Technical field[0001]The invention relates to the technical field of medium and low temperature coal tar full fraction hydrocracking technology, in particular to a hydrocracking catalyst and a preparation method thereof.Background technique[0002]my country's energy structure is rich in coal, short in oil, and low in gas. Although international crude oil prices have fallen sharply in recent years, the price of crude oil has also fallen from US$100 per barrel to US$45 per barrel. However, as far as my country is concerned, the contradiction between oil supply and demand is still one of the key factors restricting my country's economic development, and it is urgent to seek new oil substitutes.[0003]As a by-product of coal dry distillation and gasification, coal tar currently has a production capacity of 40 million tons / year in my country. Most of the coal tar is not used rationally, but is directly burned as a fuel. Therefore, the hydrogenation of coal tar to prepare fuel oil is of gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/188C10G47/12B01J37/03B01J37/08
CPCB01J23/002B01J27/188B01J37/033B01J37/036B01J37/088B01J2523/00C10G47/12B01J2523/47B01J2523/69B01J2523/847
Inventor 黄伟闫飞飞张乾涂春滟魏珺谊卢文新刘庆亮陈风敬王志刚
Owner TAIYUAN UNIV OF TECH