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Sulfur-hydrocarbon-containing desulfurization catalyst system and sulfur-hydrocarbon-containing desulfurization method

A technology for catalysts and sulfur-containing hydrocarbons, applied in chemical instruments and methods, catalyst protection, molecular sieve catalysts, etc., can solve the problems of desulfurization activity and desulfurization stability, affect the effect of desulfurization of sulfur-containing hydrocarbons, and incomplete reduction of active metals, etc. problem, achieve the effect of improving activity and stability, reducing heap ratio, promoting isomerization and cracking

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the frequent oxidation regeneration-reduction process, metals as active components will aggregate, and the reduction temperature is limited by the sublimation temperature of zinc oxide, which will also lead to incomplete reduction of active metals, making the adsorption capacity of the adsorbent during recycling The desulfurization activity decreases, and the deactivation rate of the adsorbent is high, which affects the implementation effect of desulfurization of sulfur-containing hydrocarbons
[0006] It can be seen that although adsorption desulfurization can achieve good deep desulfurization, there are still problems in the desulfurization activity and desulfurization stability in practical applications.

Method used

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  • Sulfur-hydrocarbon-containing desulfurization catalyst system and sulfur-hydrocarbon-containing desulfurization method

Examples

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Embodiment approach

[0065] According to a preferred embodiment of the present invention, preferably, as figure 1 As shown, the method of the present invention is carried out in a device for sulfur-containing hydrocarbon desulfurization, which device includes a sulfur-containing hydrocarbon desulfurization reactor 1, an atmosphere replacement and pressure conversion unit, and a regenerator 25; the bottom of the sulfur-containing hydrocarbon desulfurization reactor 1 Sulfur-containing hydrocarbons and hydrogen donor feed pipes 5 and desulfurization aid feed pipes 6 are provided, and the top of the sulfur-containing hydrocarbon desulfurization reactor 1 is provided with an exhaust pipe 12 and a discharge pipe 14; the atmosphere replacement and change The pressure unit is provided with a reactor receiver 15, a reactor feed tank 31, a regenerator receiver 28, a regenerator feed tank 22, a replacement gas inlet pipe (not marked in the figure) and a replacement gas discharge pipe 19, wherein, The atmosp...

Embodiment 1

[0081] This example is used to illustrate the catalyst system and the method for desulfurizing sulfur-containing hydrocarbons of the present invention.

[0082] (1) Catalyst system (the weight ratio of the desulfurization aid to the active component coating of the structured catalyst is 1:1).

[0083] Preparation of structured catalyst: 1.01 kg of SAPO-11 powder (produced by Beijing Chemical Plant, containing 1.0 kg on a dry basis) and 1 kg of deionized water were evenly mixed, wet ball milled into a slurry, and the particle diameter of the mixture was d90=8 microns;

[0084] Add 210 grams of water glass (containing 15% by weight of silicon oxide to the molecular sieve slurry, produced by Sinopec Catalyst Qilu Branch, with a modulus of 3.2, a particle diameter of 1 to 5nm, and an average particle diameter of 3nm), calculated as silicon oxide. Add-on is 25% by weight of SAPO-11 weight, stirred for 10 minutes, added polyethylene glycol solution 3.24 grams (the weight percent of ...

Embodiment 2

[0096] This example is used to illustrate the catalyst system and the method for desulfurizing sulfur-containing hydrocarbons of the present invention.

[0097] According to the method of Example 1, the difference is that the reduction in (2): use "400°C" and "containing 70% hydrogen by volume" instead of "450°C" and "containing 96% hydrogen by volume"; desulfurization: use " The temperature is 430℃, the pressure is 3.0MPa, and the gasoline weight hourly space velocity is 7h -1 , the volume ratio of hydrogen to gasoline is 100", replacing "the temperature is 400°C, the pressure is 1.4MPa, and the space velocity of gasoline is 5h -1 , the volume ratio of hydrogen to gasoline is 45". The reaction conditions and reaction results are shown in Table 2.

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Abstract

The invention relates to the field of desulfurization and particularly discloses a sulfur-hydrocarbon-containing desulfurization catalyst system. The catalyst system is used for a sulfur-hydrocarbon-containing desulfurization method. The catalyst system includes a desulfurization additive and a monolithic catalyst. The active component coating of the monolithic catalyst contains, by weight, a transition metal promoter 30-90% and a substrate 10-70%. The transition metal promoter is group VIIB and / or VIII metals. The substrate contains, by weight, a phosphorus aluminum molecular sieve 70-90% and a silica binder 10-30%. The desulfurization additive contains, by weight, aluminum oxide 5-40%, a silicon oxide source 5-40% and oxide of at least one of metals of groups IIB, VB and VIB 30-90%, and the desulphurization additive is microspheres with the average particle size of 20-200 microns. The weight ratio of the desulfurization additive to the active component coating of the monolithic catalyst is 1-9 to 1. The catalyst system can have good desulfurization activity and desulfurization stability.

Description

technical field [0001] The invention relates to a catalyst system for desulfurization of sulfur-containing hydrocarbons and a method for desulfurization of sulfur-containing hydrocarbons, in particular to a catalyst system for desulfurization of sulfur-containing hydrocarbons, which is used in the method for desulfurization of sulfur-containing hydrocarbons. Background technique [0002] Sulfur in vehicle fuel produces sulfur oxides after combustion. This substance will inhibit the activity of the precious metal catalyst in the automobile exhaust converter and cause it to be irreversibly poisoned, and cannot realize the catalytic conversion of toxic gases in the automobile exhaust, resulting in the unburned non-methane hydrocarbons and nitrogen in the automobile exhaust. oxides and carbon monoxide. These toxic gases are easily catalyzed by sunlight to form photochemical smog and cause acid rain. And sulfur oxide itself is also one of the main causes of acid rain. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85B01J33/00C10G45/12
Inventor 龙军田辉平王鹏林伟孙言王磊许明德
Owner CHINA PETROLEUM & CHEM CORP
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