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Hydrotreating catalyst impregnating solution and preparation method thereof

A technology of impregnation solution and hydrotreating, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high initial active metal content and difficult to achieve, and achieve moderate force , The effect of stable properties and high metal content

Active Publication Date: 2017-06-09
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using this method to prepare impregnation solution and prepare high-load hydrogenation catalyst, the initial active metal content of impregnation solution is too high, which is difficult to achieve.

Method used

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  • Hydrotreating catalyst impregnating solution and preparation method thereof
  • Hydrotreating catalyst impregnating solution and preparation method thereof
  • Hydrotreating catalyst impregnating solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 4 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 3.0g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 1 . The pH of the solution was measured to be 4.07.

Embodiment 2

[0027] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 5 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 5.1g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 2 . The pH of the solution was measured to be 5.10.

Embodiment 3

[0029] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 6 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 8.0g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 3 . The pH of the solution was measured to be 6.02.

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Abstract

The invention discloses a hydrotreating catalyst impregnating solution and a preparation method thereof. The impregnating solution is mainly prepared into an aqueous solution by a molybdenum-containing compound, a nickel-containing compound, a phosphorus-containing compound and carbonate. The preparation method comprises the following steps: 1) adding the molybdenum-containing compound, the nickel-containing compound and the phosphorus-containing compound into water and uniformly mixing; 2) heating to raise the temperature by adopting two steps, wherein in the first step, the temperature is raised to 35-60 DEG C, so that a solute added in the step 1) is fully dissolved to obtain a dark green clear and transparent solution; the carbonate is added in the step 2), and the pH of the impregnating solution is adjusted to 2-6. The Mo-Ni-P impregnating solution disclosed by the invention is higher in metal content, stable in performance, and higher and adjustable in pH value, and can be stored for a long term; a catalyst is higher in activity.

Description

technical field [0001] The invention relates to an impregnating solution, in particular to an impregnating solution for a hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] At present, the hydrotreating catalysts used in industry are usually based on inorganic oxides (such as alumina, silica, alumina-silica, etc.) as carriers, and some hydrogenation active metal components (generally For VIB metals and VIII metals, such as Mo, W and Ni, Co, etc.). The common methods of loading active metal components include impregnation method, kneading method and so on. Considering the high hydrogenation activity and the full utilization of active metals, the impregnation method is widely used to prepare hydrogenation catalysts. [0003] When preparing hydrogenation catalysts by impregnation, the nature of the impregnation solution is critical. In particular, the pH value of the impregnating solution has a great influence on the structure an...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J37/02C10G45/08
CPCB01J27/19B01J37/0213C10G45/08C10G2300/202C10G2300/70
Inventor 王杰华石友良冯春峰张然许莉
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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