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A kind of hydrogenation catalyst impregnation solution and preparation method thereof

A technology of hydrogenation catalyst and impregnating solution, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc. Concentrated metal solution, high concentration solution, etc. are not stable enough to achieve the effects of excellent strength, reduced viscosity and high acidity

Active Publication Date: 2020-08-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to dissolve the two metals separately and then mix the aqueous solutions, so it is impossible to prepare a high-concentration metal solution. At the same time, due to the addition of ammonia water, the stability of the high-concentration solution is not good, and it is impossible to prepare a high-concentration impregnation solution.

Method used

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  • A kind of hydrogenation catalyst impregnation solution and preparation method thereof
  • A kind of hydrogenation catalyst impregnation solution and preparation method thereof
  • A kind of hydrogenation catalyst impregnation solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Get 40g of basic cobalt carbonate and put it into a multi-necked flask, add 7.8g of citric acid and 80g of deionized water, and stir. After stirring evenly, heat slowly, keep the solution temperature at 95°C for 0.5-2 hours, and the solution becomes clear. Naturally cool down to 45°C, add 20.1g of cyclopropylamine and keep stirring, add 74g of ammonium molybdate after complete dissolution, continue to stir, after complete dissolution, filter the solution to remove insoluble impurities and dilute to 100ml for later use, named solution L- 1.

Embodiment 2

[0034] Get 35g of basic cobalt carbonate and put it into a multi-necked flask, add 11.2g of tartaric acid and 80g of deionized water, and stir. After stirring evenly, heat slowly, keep the solution temperature at 90°C for 0.5-2 hours, and the solution becomes clear. Naturally cool down to 60°C, add 30g of ethylenediamine and keep stirring. After completely dissolving, add 60g of ammonium tetramolybdate and continue stirring. After completely dissolving, filter the solution to remove insoluble impurities and dilute to 100ml for later use, named solution L -2.

Embodiment 3

[0036] Get 40g of cobalt nitrate and put it into a multi-necked flask, add 8g of malic acid and 80g of deionized water, and stir. After stirring evenly, heat slowly, keep the solution temperature at 95°C for 0.5-2 hours, and the solution becomes clear. Naturally cool down to 65°C, add 35g of diethanolamine and keep stirring, add 67g of ammonium heptamolybdate after complete dissolution, continue to stir, after complete dissolution, filter the solution to remove insoluble impurities and dilute to 100ml for later use, named solution L- 3.

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Abstract

The invention discloses hydrogenation catalyst impregnating liquid and a preparation method thereof. The composition of the impregnating liquid is shown as follows: the active metal content is measured by oxides: a group-VIB metal oxide is 5-70 g / 100 ml, a group-VIII metal oxide is 1-30 g / 100 ml, the molar ratio of organic acids to group-VIII metal atoms is 0.1-1, and the molar ratio of organic amines to group-VIB metal atoms is 0.1-2. The preparation method comprises the following steps: simultaneously adding cobalt / nickel salt and the organic acids in water, slowly increasing to a certain temperature till complete dissolution, keeping a constant temperature, adding the organic amines, continuously stirring, keeping the temperate, adding molybdenum / tungsten salt, continuously stirring andobtaining the hydrogenation catalyst impregnating liquid after complete dissolution for preservation and later use. In the method disclosed by the invention, group-VIB metal salt and group-VIII metalsalt are dissolved according to a certain procedure, so that the metal concentration and the stability of the impregnating liquid are improved; in the whole preparation process, ammonia water is notused, so that the environmental pollution is reduced.

Description

technical field [0001] The invention belongs to catalyst preparation technology, in particular to a hydrogenation catalyst impregnation solution and a preparation method thereof. [0002] technical background [0003] As the world's crude oil production is becoming more and more heavy, and the demand for clean oil products is increasing today, in the process of producing clean oil products, the hydrodesulfurization process technology of petroleum fractions plays an increasingly important role. The high activity requirements of hydrogen catalysts are also increasing. [0004] For ultra-deep hydrodesulfurization catalysts, the type II active center theory of Co-Mo-S and Ni-Mo-S has been widely accepted by major research and development institutions, and new high-activity hydrotreating catalysts have been developed based on this. The main improvement schemes include the choice of carrier, the application of additives, the complexation of impregnation solution, the vulcanization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/85B01J23/88B01J37/02C10G45/08
CPCB01J23/85B01J23/882B01J37/0213C10G45/08C10G2300/202C10G2300/70
Inventor 孙进郭蓉周勇杨成敏段为宇姚运海丁莉刘丽
Owner CHINA PETROLEUM & CHEM CORP
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