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Desulphurization catalyst and preparation method thereof as well as hydrocarbon oil desulfurizing method

A technology for desulfurization catalysts and oxides, applied in the direction of refined hydrocarbon oil, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor wear resistance, unstable structure, low desulfurization activity, etc., and achieve good desulfurization activity and activity The effect of stability

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the defects of low desulfurization activity, unstable structure and poor wear resistance of the adsorbent in the prior art, and provide a desulfurization catalyst and its preparation method and a method for desulfurization of hydrocarbon oil

Method used

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Examples

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preparation example Construction

[0034] The present invention also provides a method for preparing the desulfurization catalyst of the present invention, the method comprising: (1) mixing the rare earth metal compound, the first metal oxide, the precursor of the second metal oxide and water to obtain a slurry; (2) mixing heat-resistant inorganic oxide binder, silicon oxide source, water and acidic liquid are mixed, and contacted with the slurry and aluminum phosphorus molecular sieve to form a carrier slurry, and then the carrier slurry is formed, first dried and first calcined, Obtain a carrier; (3) introduce the precursor of the metal promoter on the carrier, and carry out the second drying and the second roasting to obtain the catalyst precursor; (4) reduce the catalyst precursor under a hydrogen-containing atmosphere, A desulfurization catalyst is obtained.

[0035] In the present invention, preferably, the heat-resistant inorganic oxide binder may be a heat-resistant inorganic oxide or a substance that c...

Embodiment 1

[0070] This example is used to illustrate the method for preparing a desulfurization catalyst of the present invention.

[0071] (1) Prepare the carrier. With 3.14kg of zinc oxide (Sinopharm Chemical Reagent Company, analytically pure), 1.45kg of lead oxide (Sinopharm Chemical Reagent Company, analytically pure) and lanthanum carbonate of 430g (Sinopharm Chemical Reagent Company, lanthanum oxide content 45% by weight) at 8.5 kg of water was mixed and stirred uniformly to obtain a slurry containing zinc oxide, lead oxide and lanthanum oxide;

[0072] Mix 2.16kg of kaolin (catalyst Qilu branch, containing 1.8kg on a dry basis), 1.33kg of pseudoboehmite (catalyst Nanjing branch, containing 1.00kg on a dry basis) and 7.0kg of deionized water under stirring , add 200g of concentrated nitric acid (Beijing Chemical Plant, chemically pure) and stir to make the pH = 1.8, and raise the temperature to above 60°C for acidification for 1h. When the temperature drops below 40°C, add the a...

Embodiment 2

[0078] This example is used to illustrate the method for preparing a desulfurization catalyst of the present invention.

[0079] With 4.05kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 4.0kg on a dry basis), 0.90kg of bismuth oxide powder (Sinopharm Chemical Reagent Company, analytically pure) and 0.794kg of cerium nitrate hexahydrate (Sinopharm Chemical Reagent Company, purity Greater than 99.0% by weight) was mixed in 7.1 kg of deionized water, and after stirring for 30 minutes, a slurry containing zinc oxide, bismuth oxide and cerium nitrate was obtained;

[0080]3.23kg of zirconium tetrachloride (Beijing Chemical Plant, analytically pure) is slowly added to 4.4kg of 5% by weight nitric acid solution to make pH = 2.0, and slowly stirred to avoid the precipitation of zirconia crystals to obtain colorless and transparent zirconium Sol;

[0081] Take 1.62kg of retort earth (Qilu Petrochemical Catalyst Factory, containing 1.30kg on dry basis), add 1.4k...

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Abstract

The invention discloses a desulphurization catalyst and a preparation method thereof as well as a hydrocarbon oil desulfurizing method. The desulfurization catalyst comprises the following components, on the basis of the total weight of the desulfurization catalyst, by weight: 1) 5-35% of a heatproof inorganic oxide; 2) 5-35% of a silicon oxide source; 3) 10-70% of a first metal oxide; 4) 2-20% of a second metal oxide; 5) 3-30% of a metal promoter; 6) 0.5-10 % of a rare-earth metal oxide based on rare earth oxide; and 7) 1-20% of a phosphorous and aluminum molecular sieve. The desulphurization catalyst has better desulphurization activity and activity stability.

Description

technical field [0001] The present invention relates to a desulfurization catalyst and a preparation method thereof and a method for desulfurizing hydrocarbon oil, in particular to a desulfurization catalyst, a method for preparing a desulfurization catalyst and a desulfurization catalyst obtained by the method, and using the desulfurization catalyst for desulfurization of hydrocarbon oil Methods. Background technique [0002] The sulfur oxides produced by the combustion of sulfur in vehicle fuels will inhibit the activity of noble metal catalysts in vehicle exhaust converters and cause irreversible poisoning. As a result, the vehicle exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, and these exhaust gases are easily catalyzed by sunlight to form photochemical smog and cause acid rain. At the same time, sulfur oxides in the atmosphere are also the main cause of acid rain. one. As people pay more and more attention to environmental pr...

Claims

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Application Information

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IPC IPC(8): B01J29/85C10G45/12
Inventor 林伟王鹏田辉平孙言王磊徐志成
Owner CHINA PETROLEUM & CHEM CORP
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