Method for preparing catalyst for converting mercaptan in gasoline

A catalyst and gasoline technology, which is applied in the field of catalyst preparation, can solve the problems of no disclosed catalyst preparation method, easy loss of catalyst active components, affecting the start-up progress of the device, etc., and achieves the effects of saving start-up time, low cost and long service life.

Active Publication Date: 2009-02-18
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

This on-site catalyst preparation method requires at least 2-4 days, which sometimes affects the start-up schedule of the device and increases the labor intensity on site. At the same time, the excess liquid that is withdrawn also requires post-treatment or backup equipment.
The biggest disadvantage of the catalyst bed prepared by this method is that the active components of the catalyst are easy to lose, and it generally takes 3 to 6 months to regenerate the catalyst bed.
[0004] Chinese patent CN1632072A discloses a fixed-bed catalyst with high activity, which has a certain desulfurization effect, but the patent does not disclose the preparation method of the catalyst, and does not disclose the solvent used in the preparation

Method used

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  • Method for preparing catalyst for converting mercaptan in gasoline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The method of the present embodiment has the following steps:

[0014] ①Activation of the carrier: The activated carbon was placed at 200°C for 18 hours to obtain an activated carrier;

[0015] 2. dissolving the active component in a solvent: dissolving the active component of 0.5 gram of quaternary ammonium alkalized cobalt phthalocyanine catalyst in a mixed solvent composed of 15 wt% ammonia and fatty alcohol in a ratio of 1:1;

[0016] ③ Impregnation of the carrier: Take 100 grams of activated carbon activated in step ①, add it to 150 ml of the solution obtained in step ② and immerse for 36 hours to obtain a mixed material;

[0017] ④ Filtration and drying: filter out the carrier from the mixture obtained in step ③, dry the carrier at 90° C. for 6 hours, and reuse the solvent.

[0018] ⑤ secondary impregnation of the carrier: continue to immerse the dried carrier in step ④ in a 10wt% NaOH solution for 24 hours to obtain a mixed material;

[0019] ⑥ Filtration and d...

Embodiment 2

[0021] The method of the present embodiment has the following steps:

[0022] ①Activation of the carrier: the activated carbon was placed at 180°C for 8 hours to obtain an activated carrier;

[0023] ② Dissolving the active component in a solvent: 1.0 g of quaternary ammonium alkalized cobalt phthalocyanine catalyst active component was dissolved in N,N-dimethylformamide;

[0024] ③ Impregnation of the carrier: Take 100 grams of activated carbon activated in step ①, add it to 100 ml of the solution obtained in step ② and immerse for 48 hours to obtain a mixed material;

[0025] ④ Filtration and drying: Filter out the carrier from the mixture obtained in step ③, dry the carrier at 160° C. for 5 hours, and reuse the solvent.

[0026] ⑤ secondary impregnation of the carrier: continue to immerse the dried carrier in step ④ in a 5wt% NaOH solution for 18 hours to obtain a mixed material;

[0027] ⑥ Filtration and drying: filter out the carrier from the mixed material obtained in ...

Embodiment 3

[0029] The method of the present embodiment has the following steps:

[0030] ①Activation of the carrier: the α-Al 2 o 3 Placed at 220°C for 10 hours to obtain an activated carrier;

[0031] ② dissolving the active component in the solvent: dissolving 0.15 g of the active component of the polyphthalocyanine cobalt catalyst in a mixed solvent compounded by aliphatic amine and N,N-dimethylformamide at a ratio of 1:6;

[0032] ③ Impregnation of the carrier: take the activated a-Al in step ① 2 o 3 50 grams, added to 150 milliliters of the solution obtained in step ② and soaked for 6 hours to obtain a mixed material;

[0033] ④ Filtration and drying: filter out the carrier from the mixture obtained in step ③, dry the carrier at 140° C. for 7 hours, and reuse the solvent.

[0034] ⑤ secondary impregnation of the carrier: continue to immerse the dried carrier in step ④ in 15wt% ammonia solution for 16 hours to obtain a mixed material;

[0035] ⑥ Filtration and drying: filter ou...

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Abstract

The present invention discloses a method for preparing catalyst capable of converting mercaptan contained in the gasoline. Said method includes the following steps: (1), activation of carrier; (2), dissolving the active component in the solvent, the described active component is phthalocyanine cobalt compound, and the described solvent is a simple organic solvent or organic mixed solvent or organic-inorganic mixed solvent; (3), soaking the carrier activated in step 1 in the solution obtained in the step 2 so as to obtain mixed material; (4), making the carrier be filtered out from mixed material obtained in step 3 and drying said carrier; (5), soaking the dried carrier in the inorganic alkaline solution to obtain a mixture material; and (6), filtering out said carrier from the mixture material obtained in the step 5 and drying said carrier so as to obtain the invented catalyst.

Description

technical field [0001] The invention belongs to the field of petroleum processing, and in particular relates to a preparation method of a catalyst for converting mercaptans contained in gasoline. Background technique [0002] Gasoline in the process of oil processing and refining contains a certain amount of sulfur compounds, including inorganic sulfides such as hydrogen sulfide and elemental sulfur, and organic sulfur compounds such as mercaptans, among which hydrogen sulfide, mercaptans, and nascent elemental sulfur have strong Corrosiveness, odor and toxicity, and during the use of gasoline, these sulfur compounds will be converted into highly corrosive toxic and harmful substances, such as sulfur dioxide and sulfur trioxide, which seriously pollute the environment and damage human health. Even if this gasoline is used as an intermediate product, trace amounts of sulfur compounds contained in it can cause catalyst poisoning and equipment corrosion. The existence of these...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/16B01J31/28B01J32/00
Inventor 夏道宏张杰项玉芝管志军杜伟
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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