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 catalysts, poor adaptability of raw materials, and short operation cycle, so as to achieve long cycle, short service life, and good stability effect

Active Publication Date: 2018-09-28
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

Examples

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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 for 4 hours, store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml into an equal amount of isopropanol solution and stir evenly to form a mixed solution, then slowly drop the mixed solution into the alcoholysis solution; °C, when the temperature rises to 70 °C, use a peristaltic pump to add 250 ml of distilled water dropwise, and then count for 1 hour; at a water bath temperature of 85 °C, add phosphoric acid, Ni(NO 3 ) 2 ·6H 2 O in isopropanol, (NH 4 ) 10 W 12 o 41 ·xH 2 Aqueous solution of O, without addition of NH 4 F aqueous solution (wherein the feeding time interval is 1h, the phosphoric acid (calculated by P) content in weight percentage is 1wt%, the NiO content is 6.9wt%, WO 3 content is 24wt%), after the feeding is completed, the water bath is...

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 for 4 hours, store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml into an equal amount of isopropanol solution and stir evenly, then slowly drop the mixed solution into the alcoholysis solution; ℃, after adding 250ml of distilled water dropwise with a peristaltic pump, time it for 1h; 3 ) 2 ·6H 2 O in isopropanol, (NH 4 ) 10 W 12 o 41 ·xH 2 Aqueous solution of O, NH 4 The aqueous solution of F (wherein the feeding time interval is 1h, the phosphoric acid (calculated with P) content in weight percent is 1wt%, NiO content is 6.9wt%, WO 3 Content is 24wt%, NH 4 F (calculated as F) content is 1wt%); after the feeding is completed, the water bath is heated to 95 ° C for 6 hours, poured out and aged for 10 days to form the precursor of the hydrocracking ca...

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 for 4 hours, store at room temperature for 12 hours to form an alcoholysis solution; take titanium isopropoxide Add 15ml into an equal amount of isopropanol solution and stir evenly, then slowly drop the mixed solution into the alcoholysis solution; At 70°C, use a peristaltic pump to add 250ml of distilled water dropwise, and time it for 1h; at a water bath temperature of 85°C, add phosphoric acid, Ni(NO 3 ) 2 ·6H 2 O in isopropanol, (NH 4 ) 10 W 12 o 41 ·xH 2 Aqueous solution of O, add NH 4 The aqueous solution of F (wherein the feeding time interval is 1h, the phosphoric acid (calculated with P) content in weight percent is 1wt%, NiO content is 6.9wt%, WO 3 Content is 24wt%, NH 4 F (calculated as F) content is 2wt%). After the feeding is completed, the water bath is heated to 95°C for 6 hours, poured ...

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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, wherein the active component is NiO and WO3 and the carrier is a composite carrier of AlOOH and TiO2; an additive contains phosphorus; the catalyst is prepared through a complete liquid-phase process. In the invention, when the hydrocracking catalyst is used for hydrocracking of medium / low-temperature coal tar, conversion to light fraction is greatly improved on the basis of guaranteeing high liquid yield, wherein H / C molar ratio of the coaltar is increased from 1.153 to more than 1.556 (fuel oil), even to 1.603 when the catalyst is optimized. The hydrocracking catalyst solves difficult problems that a fixed bed catalyst in the prior artis difficult to industrialize due to surface coking and inactivation caused by non-uniform heat distribution in a bed layer; the preparation method has simple process and simple operations.

Description

technical field [0001] The invention relates to the technical field of hydrocracking of full fractions of medium-low temperature coal tar, in particular to a hydrocracking catalyst and a preparation method thereof. Background technique [0002] my country's energy structure is rich in coal, short of oil, and low in gas. Although international crude oil prices have fallen sharply in recent years, the price of crude oil has also dropped from US$100 per barrel to US$45 per barrel. However, for our country, the contradiction between oil supply and demand is still one of the key factors restricting my country's economic development, and it is imminent 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 per year in my country. Most of the coal tar has not been rationally utilized, but is directly burned extensively as a fuel. Therefore, the hydrogenation of coal tar to pr...

Claims

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Application Information

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Patent Type & Authority Applications(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
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