Silicon-zinc-modified catalyst carrier and preparation method and application thereof

A technology of catalyst carrier and alumina carrier, which is applied in the direction of catalyst carrier, catalyst activation/preparation, chemical instruments and methods, etc., can solve problems such as limiting industrial application, polluting gas, equipment corrosion, etc., and achieve improved operation stability performance, simple operation, and improved hydrogenolysis performance

Active Publication Date: 2018-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dry rubber powder prepared by this method is used to prepare the catalyst. Although its activity is improved, the fluorine generated during the operation will be lost, and the hydrogen fluoride produced will corrode the device to a great extent, which is not conducive to production.
[0007] CN99113284.X discloses a method for preparing titanium-containing aluminum hydroxide by precipitating titanium salt in aluminum hydroxide slurry. Because the titanium salt solution contains chloride ions and sulfate ions, it is easy to cause corrosion to equipment, and during the roasting process Will produce gas that pollutes the environment, limiting industrial applications

Method used

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  • Silicon-zinc-modified catalyst carrier and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment

[0043] The present invention will be described in detail below by way of examples.

[0044] In the following examples, the specific surface area, pore volume and pore diameter of the sample were measured by the ASAP2405 physical adsorption instrument of American Mike Instrument Company, and the liquid N 2 As an adsorbate, the adsorption temperature was -196°C, and the specific surface area of ​​the sample was calculated using the BET method.

[0045] NH 3 - The TPD measurement was carried out on the automatic catalyst characterization system AutoChem2920 of American Micro Instrument Company. The catalyst was purged with helium gas at 400 ° C for 1 hour, and then the helium atmosphere was cooled to room temperature, and ammonia gas was adsorbed to saturation. After purging until the baseline was stable, the temperature was raised to 140°C for temperature-programmed desorption, the heating rate is 10°C·min -1 , 150-250°C acidity, 250-400°C acidity, 400-500°C acidity through NH...

preparation example 1

[0049] This preparation example is used to illustrate the preparation method of alumina carrier.

[0050] Take 150g of large-pore aluminum hydroxide dry rubber powder, 50g of small-pore aluminum hydroxide dry rubber powder, add 6g of squash powder, mix well, pour into a roller compactor, and dry mix for 5 minutes. Then, 170 g of an aqueous solution of citric acid and nitric acid (containing 6 g of citric acid and 9.23 g of nitric acid at a concentration of 3.2% by weight) were uniformly added thereto. The material was rolled for 20 minutes and extruded with a clover orifice plate with a diameter of 1.7 mm. Dry at 120°C for 4 hours and then bake at 550°C for 5 hours. The calcined alumina support is denoted as Z0. The physical and chemical properties of the alumina carrier Z0 are shown in Table 1.

Embodiment 1

[0052] Weigh 2.0g of zinc nitrate and dissolve it in deionized water with a volume of 30mL to obtain solution A; weigh 4.0g of amino-modified silicone oil and add an appropriate amount of deionized water to dissolve it with a volume of 30mL to obtain solution B; Under the condition of constant stirring, slowly pour solution B into solution A, add appropriate amount of deionized water, the final volume is 85mL, and prepare solution C.

[0053] Weigh 100g of alumina carrier Z0, uniformly immerse the alumina carrier in solution C for 8 hours, dry at 120°C for 3 hours, and calcinate at 450°C for 3 hours to obtain silicon-zinc modified catalyst carrier Z1. The physical and chemical properties of carrier Z1 are shown in Table 1.

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Abstract

The invention relates to the field of catalysts and discloses a silicon-zinc-modified catalyst carrier and a preparation method and application thereof. The method comprises contacting modified silicone oil and a water-soluble zinc compound with an alumina carrier, wherein the modified silicone oil comprises one or more of alkyl-modified silicone oil, polyether-modified silicone oil, epoxy-modified silicone oil, amino-modified silicone oil, polymer-modified silicone oil and hydroxyl-modified silicone oil. The preparation method improves the surface acid amount and the acid strength of the carrier so that the carrier can be used for preparation of a highly active hydrotreatment catalyst.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a silicon-zinc modified catalyst carrier and its preparation method and application. Background technique [0002] The content of impurities such as nitrogen, sulfur, oxygen and metals in crude oil is constantly increasing, and the degree of crude oil is becoming heavier. It has become a fact before people. The existence of these impurities not only poisons the catalyst in the subsequent treatment process, but also emits A large amount of harmful gases such as sulfur oxides and nitrogen oxides are released, endangering human health and environmental protection. The use of catalysts with high activity and good stability can not only ease the process conditions, but also reduce hydrogen consumption and achieve energy saving and consumption reduction. [0003] The purpose of hydrotreating is to remove nitrogen, sulfur, oxygen and other impurities in raw oil, and the quality and quantity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J32/00B01J35/10B01J37/08C10G45/04
CPCB01J23/06B01J35/1019B01J35/1061B01J37/0236B01J37/08C10G45/04C10G2300/202
Inventor 姜艳宋春利张勇姚伟
Owner CHINA PETROLEUM & CHEM CORP
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