Method for removing sulfide in liquefied gas

A technology for liquefied gas and sulfide, which is applied in chemical instruments and methods, separation methods, gas fuels, etc., and can solve problems such as the reduction of olefin yield.

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this disclosure is to solve the problem of olefin yield reduction in existing methods

Method used

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  • Method for removing sulfide in liquefied gas
  • Method for removing sulfide in liquefied gas
  • Method for removing sulfide in liquefied gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] This embodiment is used to illustrate the method for removing sulfide in liquefied gas disclosed in the present disclosure, including the following operations.

[0075] (1) In the fast bed desulfurization reactor, under the action of the lifting medium (water vapor), the regenerated desulfurization adsorbent that is completely burnt and regenerated is mixed with gasoline (catalytic gasoline with a sulfur content of 569 μg / g and a weight hourly space velocity of 1.3h -1 ) is contacted below the height of a given position in the extension, and passivated to obtain a passivated regenerated desulfurization adsorbent, wherein the weight ratio of the completely charred regenerated desulfurization adsorbent to catalytic gasoline is 8:1;

[0076] (2) Liquefied gas (catalytically cracked liquefied gas) and refinery gas containing hydrogen are introduced at a given height in the extension of the fast bed desulfurization reactor, and liquefied gas (catalytically cracked liquefied ...

Embodiment 2

[0082] The method for removing sulfides in liquefied gas according to the method of Example 1, the difference is: during passivation, the gasoline space velocity is 0.7h -1 ; The temperature of adsorption desulfurization reaction is 430℃, the pressure is 2.0MPa, and the weight hourly space velocity of liquefied gas is 1.4h -1 .

[0083] Physical and chemical analysis was carried out on the desulfurized oil and gas materials obtained in this example, and the sulfur content, olefin content and octane number were measured. The measurement results are shown in Table 4.

Embodiment 3

[0085] This embodiment is used to illustrate the method for removing sulfide in liquefied gas disclosed in the present disclosure, including the following operations.

[0086] (1) Use the semi-regenerated desulfurization adsorbent regenerated by incomplete charring as the passivated regenerated desulfurization adsorbent, and in the fast bed desulfurization reactor, under the action of the lifting medium (water vapor), the passivated regenerated desulfurization adsorption The agent is contacted with liquefied gas (catalytically cracked liquefied gas) and refinery gas containing hydrogen to carry out the adsorption desulfurization reaction to obtain the reacted material, wherein the weight ratio of the semi-regenerated desulfurization adsorbent that is not completely burnt and regenerated to the liquefied gas is 16:1, the conditions of adsorption desulfurization reaction include: temperature is 400°C, pressure is 1.0MPa, liquefied gas weight hourly space velocity is 2.6h -1 , th...

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Abstract

The invention relates to a method for removing sulfides in liquefied gas, according to the method, a passivated regenerated desulfurization adsorbent is used for carrying out adsorption desulfurization treatment on the liquefied gas, and due to the fact that the activity of the passivated regenerated desulfurization adsorbent is low, the method can effectively prevent unsaturated olefins in the liquefied gas from being converted into saturated alkanes in the desulfurization treatment process; this can at least partially increase the yield of unsaturated olefins in the liquefied gas.

Description

technical field [0001] The present disclosure relates to the field of petrochemical technology, in particular, to a method for removing sulfide in liquefied gas. Background technique [0002] Liquefied petroleum gas contains a large amount of sulfide, which mainly exists in the form of hydrogen sulfide, mercaptan and sulfide. With the development of petrochemical technology and the improvement of relevant environmental protection regulations, the removal of sulfide in petroleum liquefied gas has become an important content in the field of petrochemical technology. [0003] In related technologies, a desulfurization adsorbent is used to adsorb and remove sulfide in liquefied gas in the presence of hydrogen. [0004] However, in the above method, some olefins in the liquefied gas will react with hydrogen to form saturated alkanes, which will reduce the yield of olefins in the liquefied gas. Contents of the invention [0005] The purpose of the present disclosure is to solv...

Claims

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Application Information

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IPC IPC(8): C10L3/12B01D53/02
CPCC10L3/12B01D53/02B01D2257/30
Inventor 毛安国白风宇张执刚王文寿崔琰
Owner CHINA PETROLEUM & CHEM CORP
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