Desulphurization adsorbent regeneration method, and sulfur containing hydrocarbon adsorption desulphurization method and device

A technology of adsorbent regeneration and adsorbent, which is applied in the field of sulfur-containing hydrocarbon desulfurization, can solve the problems of desulfurization efficiency decrease, agent consumption increase, and activity reduction, etc., and achieve the effect of increasing regeneration rate, increasing temperature, and reducing adsorbent consumption

Active Publication Date: 2018-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with the continuous cycle regeneration of S-Zorb adsorbent, this kind of S-Zorb adsorbent tends to suffer from the problems of fragmentation (decreased strength) and decreased activity, which in turn leads to a decrease in desulfurization efficiency and an increase in agent consumption.

Method used

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  • Desulphurization adsorbent regeneration method, and sulfur containing hydrocarbon adsorption desulphurization method and device
  • Desulphurization adsorbent regeneration method, and sulfur containing hydrocarbon adsorption desulphurization method and device
  • Desulphurization adsorbent regeneration method, and sulfur containing hydrocarbon adsorption desulphurization method and device

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Embodiment 1

[0066] It is used to illustrate the beneficial effects of the sulfur-containing hydrocarbon adsorption desulfurization method of the present invention.

[0067] Sulfur-containing hydrocarbon adsorption desulfurization method: adopt image 3 The shown sulfur-containing hydrocarbon adsorption desulfurization device (wherein the delivery vertical pipe in the spent agent delivery pipeline 9 may have a structure with a wide bottom and a narrow top). And the gasoline of the composition shown in Table 1 is used as sulfur-containing hydrocarbon, and the adsorbent shown in Table 2 is passed into the aforementioned sulfur-containing hydrocarbon adsorption desulfurization device for adsorption desulfurization treatment, wherein:

[0068] (1) Desulfurization process (processing in reactor 1): using hydrogen as the hydrogen supply medium at a temperature of 410°C, a pressure of 2.8MPa, and a gasoline weight hourly space velocity of 4h -1 1. The molar ratio of hydrogen to gasoline is to ca...

Embodiment 2

[0075] It is used to illustrate the beneficial effects of the sulfur-containing hydrocarbon adsorption desulfurization method of the present invention.

[0076] Sulfur-containing hydrocarbon adsorption desulfurization method: with reference to Example 1, the differences are as follows:

[0077] (2) Regeneration treatment:

[0078] Coke condensation treatment (carried out in the regenerator feed tank 6): use nitrogen as the stripping gas, mix the sulfur-laden standby agent and the refluxed regenerating agent, at a temperature of 400°C and a pressure of 0.2MPa, strip the gas The superficial gas velocity is 0.05m / s and the decoking standby agent is obtained by staying for 60 minutes.

[0079] Primary regeneration treatment (carried out in the spent agent delivery pipeline 9): with the mixed gas of air and nitrogen (the oxygen content is 15% by volume, and the preheating temperature is 200° C.) as the first regeneration gas, the decoked spent agent is heated at a temperature of ...

Embodiment 3

[0083] It is used to illustrate the beneficial effects of the sulfur-containing hydrocarbon adsorption desulfurization method of the present invention.

[0084] Sulfur-containing hydrocarbon adsorption desulfurization method: with reference to Example 1, the differences are as follows:

[0085] (2) Regeneration treatment:

[0086] Coke condensation treatment (carried out in the regenerator feed tank 6): use nitrogen as the stripping gas, mix the sulfur-laden standby agent and the refluxed regenerating agent, at a temperature of 600°C, a pressure of 0.1MPa, stripping the gas Stay for 10 minutes under the condition of superficial gas velocity of 0.3m / s to obtain decoking standby agent.

[0087] Primary regeneration treatment (carried out in the spent agent delivery pipeline 9): with the mixed gas of air and nitrogen (the oxygen content is 15 volume %, the preheating temperature is 150 ℃) as the first regeneration gas, decoking the spent agent at a temperature of 320° C., press...

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Abstract

The invention discloses a desulphurization adsorbent regeneration method, and a sulfur containing hydrocarbon adsorption desulphurization method and a device. The desulphurization adsorbent regeneration method comprises following steps: S1, under coke condensation conditions, in the presence of gas stripping gas, coke on the surface of a reagent to be treated is subjected to condensation reactionso as to obtain a decoked reagent; S2, under regeneration conditions, the decoked reagent is contacted with a regeneration gas so as to obtain a regenerated reagent. According to the desulphurizationadsorbent regeneration method, regeneration pre-treatment of the reagent to be treated is adopted, the reagent is subjected to pre-treatment under coke condensation conditions, so that compounds suchas hydrogen gas and methane are generated via condensation reaction of coke on the surface of the reagent, hydrogen gas and methane are removed using gas stripping gas, the hydrogen content of the reagent is reduced, the amount of water generated in regeneration process is reduced, generation of zinc metasilicate in subsequent regeneration process is reduced effectively, the regenerated reagent activity and strength are improved at a certain degree, and adsorbent consumption is reduced.

Description

technical field [0001] The invention relates to the field of sulfur-containing hydrocarbon desulfurization, in particular to a desulfurization adsorbent regeneration method, a sulfur-containing hydrocarbon adsorption desulfurization method and a device. Background technique [0002] In order to protect the environment, countries around the world have set stricter and stricter standards for the sulfur content of gasoline. Since 2017, my country will fully implement the gasoline specifications of the National V emission standard (that is, the mass fraction of sulfur content is less than 10 μg / g), which puts higher requirements on the gasoline desulfurization process. Adsorption desulfurization (S-Zorb) technology is a new technology developed by ConocoPhillips Petroleum Company of the United States for the production of ultra-low sulfur clean gasoline, which can economically reduce the sulfur content in gasoline to 10 μg / g or lower, minimizing Under the premise of octane numb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34C10G45/02
CPCB01J20/3433B01J20/3458C10G45/02C10G2300/1037C10G2300/202C10G2400/02
Inventor 朱丙田武雪峰龙军侯栓弟张久顺徐广通张哲民毛安国张同旺韩颖刘凌涛
Owner CHINA PETROLEUM & CHEM CORP
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