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Deacidifying catalyst and preparation method and application thereof

A catalyst and deacidification technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, catalyst regeneration/reactivation, etc., can solve problems that have not been raised, and achieve low acid value, cheap and easy-to-obtain raw materials, and high catalytic performance Effect

Active Publication Date: 2011-01-12
SINOPEC LUOYANG PETROCHEM ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent USP4752381 introduces a method for neutralizing and reducing the acid value of distillate oil with ethanolamine, but the method does not propose the catalyst used. In the absence of catalyst, acylation deacidification requires higher temperature and excess organic amine, and After deacidification, the acid value of distillate oil is still high, so it is difficult to bear economically; Chinese patent 200410048349 introduces the method of reducing the acid value of distillate oil by using tin oxide and heteropolyacid catalyst. The acid reduction catalyst used in this method is SnO or heteropolyacid catalyst. Polyacid HPO 4 WO 3 XH 2 O, the method is to use C in the presence of a catalyst 1 ~C 6 Deacidification of Alcohol and Naphthenate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Dissolve 15 grams of phosphoric acid, 10 grams of boric acid, and 15 grams of tungstophosphoric acid into 100 grams of water, stir and dissolve evenly, add 50 grams of alumina carrier, impregnate at 40°C for 3 hours, filter with suction, and then dry at 110°C for 6 hours, and finally high-temperature roasting at 300° C. under nitrogen protection for 4 hours, and after cooling, the deacidification catalyst A was obtained, and the active component content was determined to be 9.6% by weight.

Embodiment 2

[0019] Dissolve 20 grams of ammonium sulfate, 20 grams of boric acid, and 25 grams of tungstosilicic acid into 100 grams of water, stir and dissolve evenly, add 50 grams of diatomite carrier, the preparation method is the same as in Example 1, and obtain the deacidification catalyst B after cooling. The active ingredient content was determined to be 19.5% by weight.

Embodiment 3

[0021] Dissolve 10 grams of phosphoric acid, 5 grams of boric acid, and 10 grams of tungstosilicic acid into 100 grams of water, stir and dissolve evenly, and then add 50 grams of diatomite carrier. The preparation method is the same as that of Example 1, and the deacidification catalyst C is obtained, and the activity group is determined. The component content was 5.2% by weight.

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PUM

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Abstract

The invention discloses a deacidifying catalyst and a preparation method and application thereof. The deacidifying catalyst converts and removes petroleum acid in crude oil and distillate oil thereof at relatively moderate temperature. The deacidifying catalyst consists of 80-95% of a carrier, 1-20% of an active component A and 1-20% of an active component B to total weight of the deacidifying catalyst, wherein, the carrier is one of aluminum oxide, a molecular sieve, diatomite and silicagel, the active component A is more than one of sulfate ions, phosphate ions and boron oxides, and the active component B is more than one of tungstophosphoric acid, tungstosilicic acid, molybdophosphate, and tungstomolybdic acid. The deacidifying catalyst can help obtain deacidification rate of the crudeoil or the distillate oil above 90%, and acid value of the crude oil or the distillate oil below 0.50mg KOH / g.

Description

technical field [0001] The invention belongs to a method for reducing acidity of acid-containing crude oil, in particular to a deacidification catalyst and its preparation method and application. Background technique [0002] In recent years, with the continuous and deep exploitation of crude oil, the proportion of high acid value crude oil in the total crude oil production is increasing. Petroleum acid in high acid value crude oil includes naphthenic acid, fatty acid and phenolic substances, among which the content of naphthenic acid accounts for more than 95%. Naphthenic acid will cause serious corrosion to refining equipment during crude oil processing and affect the long-term safety of refining units operation and affect the performance of petroleum products. In order to reduce the corrosion of acid-containing crude oil and meet the processing requirements of refineries, various anti-corrosion measures have been adopted at home and abroad, mainly including: (1) mixing o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/188B01J27/053B01J27/19B01J37/02C10G29/20B01J27/28B01J38/02
Inventor 段永锋申明周彭松梓李春贤李朝法张宏飞徐静
Owner SINOPEC LUOYANG PETROCHEM ENG CORP