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Quasi-thin empholite composition containing organic reaming agent

A pseudo-boehmite and organic pore-enlarging agent technology, applied in chemical/physical process, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of poor pore-enlarging effect and large content of organic pore-enlarging agent , to achieve the effect of low crystallinity

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new method for the disadvantages that the content of organic pore-enlarging agent is large in the existing pseudo-boehmite composition containing organic pore-enlarging agent, and the pore-enlarging effect is poor when the content of organic pore-enlarging agent is low. Pseudo-boehmite composition with low content of organic pore-enlarging agent and good pore-enlarging effect and preparation method thereof

Method used

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  • Quasi-thin empholite composition containing organic reaming agent

Examples

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Comparison scheme
Effect test

example 1

[0036] Adopt aluminum hydroxide (Shandong aluminum plant product) and sodium hydroxide (Beijing chemical plant product) reaction preparation concentration to be the NaAlO of 200 grams alumina / liter 2 solution, this solution was mixed with a concentration of 90 grams of alumina / liter of Al2 (SO 4 ) 3 Solution (Changling Oil Refinery Catalyst Factory product) joins in the gel forming tank of a 2 liters simultaneously with the mode of concurrent flow, puts 1.5 liters of water in advance in the tank, NaAlO 2 The flow rate of the solution is 1.1 liters / hour, adjust the Al 2 (SO 4 ) 3 The flow rate of the solution is such that the gelling pH value is 8, and the temperature of the gelling process is 50°C. The slurry generated by the gelling is collected in an aging tank. After collecting for 20 minutes, the slurry is switched to another aging tank for collection. Add sodium carbonate to the collected aging tank to adjust the pH to 10, then age for 50 minutes, filter, and wash 4 t...

example 2

[0038] NaAlO with a concentration of 240 g alumina / L 2 Solution (preparation method is the same as example 1) and concentration is the Al(NO of 50 grams of alumina / liters) 3 ) 3 (product of Beijing Chemical Factory) the solution is added into a 2-liter gel-forming tank simultaneously in a co-current manner, and 1.5 liters of water, NaAlO 2 The flow rate of the solution is 1.1 liters / hour, adjust the Al(NO 3 ) 3 The flow rate of the solution is such that the gelling pH value is 7.5, and the temperature of the gelling process is 35°C. The slurry generated by the gelling process is collected in an aging tank. After collecting for 20 minutes, the slurry is switched to another aging tank for collection. The slurry in the aging tank that has been collected is aged for 150 minutes, filtered, and washed twice with 30 times 55°C deionized water to prepare 8 kg of pseudo-boehmite wet filter cake, and take 50 grams of the wet filter cake at 110°C After drying for 8 hours, the relativ...

example 3

[0040] Get 20 liters of concentration and be the sodium metaaluminate solution (preparation method is the same as example 1) of 20 grams of aluminum oxide / liter, be placed in a 25 liters of gelling tank, initial temperature 15 ℃, pass into carbon dioxide from the bottom of gelling tank The mixed gas of carbon dioxide and air with a content of 30% by volume, the flow rate of the mixed gas is 35 m3 / hour, and the reaction takes 5 minutes, and the pH value drops to 6.8 (end point pH value). At this time, the reaction temperature is 28 ° C, and the gelation reaction ends , filtered, beating and washing with 20 times of 45°C deionized water for 5 times, and finally obtained pseudo-boehmite wet filter cake by filtering, gelling and washing twice in the same way, and a total of about 8 kg of pseudo-boehmite wet filter cake was obtained. Filter cake, get this wet filter cake 50 grams and dry at 130 ℃ for 3 hours, its relative crystallinity measured by X-ray diffraction is 58%.

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Abstract

The present invention relates to a pseudothin diaspore composition containing organic pore-expanding agent. Said composition contains 92-99.5 wt% of pseudothin diaspore and 0.5-8 wt% of organic pore-expanding agent, in which the crystallinity of pseudothin diaspore is 10-70%. In the pseudothin diaspore composition provided by said invention the organic pore-expanding agent content is low, after high-temperature calcination the alumina with large pore capacity and large pore diameter can be obtained. Said alumina can be used as carrier material for preparing hydrodemetalization catalyst for heavy oil, residual oil and short residuum specially.

Description

technical field [0001] The invention relates to a pseudo-boehmite composition containing an organic pore-enlarging agent and a preparation method thereof. Background technique [0002] Hydrodemetallization catalysts used for heavy oil, especially vacuum residue with high metal content, are prone to rapid decline and deactivation of catalyst activity due to the deposition of metal impurities such as nickel and vanadium. Using a catalyst with a larger pore volume and a larger pore diameter can slow down the deactivation rate of the catalyst and prolong the operation period of the catalyst. The pore structure of the catalyst is determined by the carrier that constitutes the catalyst. Therefore, in a certain sense, the preparation of a carrier with a larger pore volume and a larger pore diameter is an important step in the preparation of residual oil, especially for the preparation of vacuum slag with high metal content. Key to oil hydrodemetallizatio...

Claims

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Application Information

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IPC IPC(8): B01J37/04C10G45/04
Inventor 杨清河曾双亲刘滨胡大为朱立聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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