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Catalyst system for desulfurization of sulfur-containing hydrocarbons and method for desulfurization of sulfur-containing hydrocarbons

A technology for catalysts and sulfur-containing hydrocarbons, applied in refining to remove heteroatoms, etc., can solve problems such as decreased desulfurization activity, incomplete reduction of active metals, problems with desulfurization activity and desulfurization stability, and achieve the effect of improving air quality

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Catalyst system for desulfurization of sulfur-containing hydrocarbons and method for desulfurization of sulfur-containing hydrocarbons
  • Catalyst system for desulfurization of sulfur-containing hydrocarbons and method for desulfurization of sulfur-containing hydrocarbons
  • Catalyst system for desulfurization of sulfur-containing hydrocarbons and method for desulfurization of sulfur-containing hydrocarbons

Examples

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Embodiment approach

[0063] 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 the sulfur-containing hydrocarbon desulfurization reactor 1, atmosphere replacement and pressure transformation unit and regenerator 25; the sulfur-containing hydrocarbon desulfurization reactor 1 The bottom of the sulfur-containing hydrocarbon desulfurization reactor 1 is provided with an exhaust pipe 12 and a discharge pipe 14; the atmosphere replacement And the pressure transformation unit is provided with reactor receiver 15, reactor feed tank 31, regenerator receiver 28, regenerator feed tank 22, replacement gas inlet pipe (not marked in the figure) and replacement gas discharge pipe 19, Wherein, the atmosphere replacement and pressure transformation unit also includes a lock hopper 18; the reactor receiver 15, the reactor feed tank 31, ...

Embodiment 1

[0079] This example is used to illustrate the catalyst system and the method for desulfurizing sulfur-containing hydrocarbons of the present invention.

[0080](1) Catalyst system (the weight ratio of the desulfurization aid to the active component coating of the structured catalyst is 1:1).

[0081] Preparation of Regular Structure Catalysts: Ni / Al 2 o 3 For the active component coating, it is coated on a cordierite honeycomb carrier (the carrier pore density is 400 holes / square inch, and the porosity is 70%) to obtain a regular structure catalyst, and the nickel content on the active component coating is 80% by weight , Al 2 o 3 The content is 20% by weight. The active component coating content of the catalyst was 25% by weight.

[0082] The desulfurization aid is prepared by the following method:

[0083] Mix 6.07 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 6.0 kg on a dry basis), 0.32 kg of lanthanum oxide (produced by Sinopharm Group, con...

Embodiment 2

[0090] This example is used to illustrate the catalyst system and the method for desulfurizing sulfur-containing hydrocarbons of the present invention.

[0091] 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 specifically discloses a catalyst system for desulfurization of sulfur-containing hydrocarbons, which is used in a method for desulfurization of sulfur-containing hydrocarbons. The catalyst system includes a desulfurization aid and a regular structure catalyst; the regular structure catalyst includes a regular structure carrier and an active component coating distributed on the inner surface and / or outer surface of the carrier, with the total weight of the active component coating As a benchmark, the active component coating contains 30-90% by weight of active metal and 10-70% by weight of the matrix, the active metal is the metal of VIIB group and / or VIII group; Based on the total weight, the desulfurization aid contains 5-35% by weight of alumina, 0.5-10% by weight of rare earth oxides, 5-35% by weight of silicon oxide source and 30-89.5% by weight of IIB, VB and VIB The oxide of at least one metal in the group, and the desulfurization aid is a microsphere with an average particle diameter of 20-200 microns. The catalyst system provided by the invention can have better 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 Patents(China)
IPC IPC(8): C10G45/06C10G45/30
Inventor 孙言林伟王鹏田辉平徐志成王磊李峥
Owner CHINA PETROLEUM & CHEM CORP
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