Dispersion method of suspension bed hydrogenation water-soluble catalyst

A catalyst, water-soluble technology, applied in the petroleum industry, treatment with moving solid particles, control/regulation of hydrocarbon oil treatment, etc., can solve the problems of high water content of catalyst raw materials and difficult dispersion, and achieve lower water content and better dispersion effect. , the effect of simple foaming process

Inactive Publication Date: 2017-11-14
SINOPEC YANGZI PETROCHEM +1
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Problems solved by technology

[0004] In order to solve the defects of difficult dispersion of water-soluble dispersants and high water content of catalyst raw materials in the suspension bed hydrogenation process in the prior art, the present invention provides a dispersion method of water-soluble catalysts for suspension bed hydrogenation

Method used

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  • Dispersion method of suspension bed hydrogenation water-soluble catalyst
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  • Dispersion method of suspension bed hydrogenation water-soluble catalyst

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Embodiment 1

[0030] At 16250μg / g FeSO 4 and 6250 μg / g NiSO 4 Add sodium dodecylbenzenesulfonate / Tween 80 addition amount to the foaming agent combination of 5g / L in the prepared composite catalyst aqueous solution, under the condition that the rotating speed is 5000r / min and the stirring temperature is 25°C, After stirring for 60 seconds, it is divided into upper and lower layers. The upper layer is a catalyst dispersion system in a stable foam state, and the lower layer is a clear liquid; the metal ion concentration of the foam layer (upper layer) and the clear liquid layer (lower layer) is carried out by atomic absorption spectroscopy during the half-life of the microfoam. Analysis, the results are shown in Table 1, and Table 2 is the main product yield of the suspended bed hydrogenation reaction after the catalyst is dispersed in Liaohe normal slag and Venezuelan normal slag in different ways.

[0031] Table 1 Concentration of metal ions in different systems measured by atomic absorpti...

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Abstract

The invention discloses a dispersion method of a suspension bed hydrogenation water-soluble catalyst. The method comprises the following steps: adding foaming agents into a water-soluble catalyst solution; stirring for 1 second to 6000 seconds under conditions that the rotation speed is 500r/min to 15000r/min and the stirring temperature is 5 DEG C to 50 DEG C until the water-soluble catalyst solution is divided into two layers, wherein an upper layer is a stable-foam-state catalyst dispersion system while a lower layer is a clear solution or suspension liquid; taking the stable-foam-state catalyst dispersion system out and adding the stable-foam-state catalyst dispersion system into a heavy oil raw material for being stirred to obtain a mixture; carrying out steam stripping on the obtained mixture and then enabling the mixture to enter into a reaction system. The dispersion method of the suspension bed hydrogenation water-soluble catalyst disclosed by the invention is simple in foaming process, and only a proper amount of foaming agents are added into an aqueous solution or the suspension liquid of the catalyst and then stirring is carried out so as to obtain a finished product. Through enrichment of the catalytic active components by foam, the moisture content of the dispersion system is reduced, so that the load in subsequent steam stripping and dehydration processes is reduced; catalyst particles can be more uniformly and finely dispersed in crude oil.

Description

technical field [0001] The invention relates to a method for dispersing a suspension-bed hydrogenation water-soluble catalyst, which belongs to the field of chemical industry. Background technique [0002] The suspension bed hydrogenation process is relatively simple. Most of them use empty barrel reactors or simple internal components, and the finely dispersed additives (including catalysts or additives, etc.) are converted through the reactor together with raw material oil and hydrogen. Suspension-bed hydrogenation catalysts currently used are divided into two categories: oil-soluble catalysts and water-soluble catalysts. Oil-soluble catalysts are easy to disperse and have high hydrogenation activity, but are expensive and have poor coke loading performance. Water-soluble catalysts are cheap and have better coke loading performance than oil-soluble catalysts, but they are difficult to disperse because they are not easily miscible with residual oil. The dispersion of cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G49/12C10G49/26
CPCC10G49/12C10G49/26C10G2300/70
Inventor 廉勇沐宝泉
Owner SINOPEC YANGZI PETROCHEM
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