Preparation method of load-type desulfurizer

A desulfurizer and supported technology, which is used in the preparation of supported desulfurizers, can solve the problems of low dispersion of active components, small loading, etc., and achieves reduction of polarity and viscosity, energy saving, and improvement of dispersion. The effect of load

Active Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low dispersion of active components and small loading capacity in desulfurizers in the prior art, and provide a loaded desulfurization agent with high dispersion of active components and large loading capacity. The preparation method of the agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] Firstly, the preparation method of the supported desulfurizing agent in the present invention will be further described. The preparation method of the invention can be divided into: carrier activation, preparation of impregnating solution, preparation of carrier loaded with active metal compound, and alkali solution treatment.

[0017] carrier activation

[0018] Carriers such as various types of molecular sieves, aluminum oxide, activated carbon, carbon fiber, mordenite, and high alumina silicate are heated at 120-350°C for 8-36 hours to complete the activation process. This step is not the focus of the present invention and is well known to those skilled in the art, so it will not be described in detail.

[0019] Preparation of dipping solution

[0020] The active metal compound is dissolved in a solvent to prepare a solution, that is, an impregnating solution for impregnating the carrier. The solvent for preparing the immersion liquid in the present invention i...

Embodiment 1

[0029] Example 1 Preparation of desulfurizer C1

[0030] ①Heat the aluminum oxide carrier at 350°C for 30 hours.

[0031] ② The mixture of zinc chloride and zinc nitrate is dissolved in water and N,N-dimethylformamide with a volume ratio of 8:1 to prepare an impregnating solution.

[0032] ③Immerse the activated carrier in the prepared impregnating solution for 48 hours, filter the carrier out of the impregnating solution, and dry at 180°C for 5 hours to obtain a carrier loaded with zinc chloride and zinc nitrate, in which The content of zinc and zinc nitrate is 2 wt%.

[0033] ④ Immerse the carrier loaded with zinc chloride and zinc nitrate in 30wt% potassium hydroxide solution for 6 hours, filter the impregnated carrier from the alkali solution, dry it at 180°C for 5 hours, and then dry it at 480 °C for 5 hours to obtain desulfurizer C1. The desulfurization performance of C1 is shown in Table 1.

Embodiment 2

[0034] Example 2 Preparation of desulfurizer C2

[0035] ①Heat the mixed carrier of high alumina silicate and activated carbon at 120°C for 36 hours.

[0036] ② The mixture of ferric chloride and copper nitrate is dissolved in a solvent with a volume ratio of 3wt% ammonia water and ethylene glycol of 10:1 to prepare an impregnating solution.

[0037] ③Immerse the activated carrier in the prepared impregnating solution for 24 hours, filter the carrier out of the impregnating solution, and dry at 80°C for 10 hours to obtain a carrier loaded with ferric chloride and copper nitrate, in which The content of iron and copper nitrate is 10 wt%.

[0038] ④ Immerse the carrier loaded with ferric chloride and copper nitrate in 5wt% sodium hydroxide solution for 24 hours, filter the impregnated carrier from the alkali solution, dry it at 80°C for 10 hours, and then dry it at 180 °C for 10 hours to obtain desulfurizer C2. The desulfurization performance of C2 is shown in Table 1.

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Abstract

The invention relates to a preparation method of load-type desulfurizer, comprising the following steps: 1,activating a carrier; 2, dissolving an active metal compound in the solvent to prepare impregnation liquid; 3, impregnating the activated carrier in step 1 into the impregnation liquid obtained from step 2, and filtering and dring to obtain a carrier carried with active metal compound; and 4. impregnating the carrier carried with active metal compound, which is obtained from step 3, into inorganic alkaline solution, and filtering, drying and baking to obtain desulfurizer finished product. The desulfurizer obtained with the preparation method of the invention has high dispersion degree of active components, big capacity and high desulfurization degree.

Description

technical field [0001] The invention belongs to the field of desulfurizers, in particular to a preparation method of a load-type desulfurizer used for removing sulfides in various oil products. Background technique [0002] In recent years, with the continuous exploitation of crude oil, the sulfur content in oil products has been increasing year by year. People must continuously improve the desulfurization capacity of desulfurizers to meet the needs of further production or processing. The current methods of preparing desulfurizers mainly include kneading and impregnation. Compared with the kneading method of preparing desulfurizers by purely mechanical kneading, the active components in the desulfurizer prepared by the impregnation method have a higher degree of dispersion. [0003] Chinese patent CN1609171 discloses a method for preparing a desulfurizing agent. The desulfurizing agent uses alumina mixtures with different pore structures as a carrier, first impregnates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30C10G31/00
Inventor 夏道宏张杰项玉芝徐斌蒲延芳闻学兵
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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