Adsorptive desulfurization technology for liquefied petroleum gas

A liquefied petroleum gas and adsorption desulfurization technology, which is applied in the petroleum industry, gas fuel, gas treatment, etc., can solve the problems of low sulfur in adsorption desulfurizers, large differences in process conditions, unfavorable popularization and application, etc., and achieve the improvement of adsorption sulfur capacity, adsorption Sulfur capacity improvement and enhanced chemical adsorption effect

Active Publication Date: 2018-05-25
FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the field of existing liquefied petroleum gas desulfurization technology, the sulfur capacity of the adsorption desulfurizer is low, which makes the switching between the adsorption and rege

Method used

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  • Adsorptive desulfurization technology for liquefied petroleum gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of adsorbent

[0030] Adsorbent A

[0031] Take Al 2 O 3 50g, add 60g of distilled water, 8g of concentrated nitric acid and mix well, take 100g of 13X molecular sieve and 3g of sesbania powder into the above mixture, extrude it, dry at 110℃ for 4 hours, calcined at 550℃ for 5 hours, make Into the catalyst carrier. Take 15g of ammonium metatungstate and 3g of nickel nitrate to dissolve in distilled water to make 200g of solution. The carrier was immersed in the solution and shaken. After about 6 hours, the carrier was filtered out, dried at 110°C for 6 hours, and then calcined at 550°C for 5 hours. The adsorbent A loaded with tungsten and nickel was prepared.

[0032] Adsorbent B

[0033] Take Al 2 O 3 20g, add 30g of distilled water, 8g of concentrated nitric acid and mix well, take 100g of Y-type molecular sieve, add 3g of sesame powder to the above mixture, extrude it, dry at 110℃ for 4 hours, calcined at 550℃ for 5 hours, make Into the catalyst carrier. Tak...

Embodiment 2

[0037] Preparation of adsorbent

[0038] Adsorbent A

[0039] Take Al 2 O 3 20g, add 50g of distilled water, 8g of concentrated nitric acid and mix evenly, take 100g of 13X molecular sieve, add 3g of sesame powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours to make Catalyst carrier. Take 15g of ammonium metatungstate, 5g of nickel nitrate and 1g of cerium nitrate to dissolve with distilled water to make 200g of solution. The carrier was immersed in the solution and shaken. After about 6 hours, the carrier was filtered out, dried at 110°C for 6 hours, and then calcined at 550°C for 5 hours. The adsorbent A loaded with tungsten, nickel and cerium was prepared.

[0040] Adsorbent B

[0041] Take Al 2 O 3 60g, add 60g of distilled water, 8g of concentrated nitric acid and mix well, take 100g of Y-type molecular sieve, add 3g of sesame powder to the above mixture, extrude it, dry at 110°C for 4 hours, and calcinate at 550°C for 5 hours. In...

Embodiment 3

[0045] Preparation of adsorbent

[0046] Adsorbent A

[0047] Take Al 2 O 3 30g, add 50g of distilled water, 8g of concentrated nitric acid and mix well, take 100g of type A molecular sieve, add 3g of sesame powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcinate at 550°C for 5 hours. Into the catalyst carrier. Dissolve 20 g of ammonium metatungstate, 6 g of nickel nitrate and 5 g of cerium nitrate in distilled water to prepare a 200 g solution. The carrier was immersed in the solution and shaken. After about 6 hours, the carrier was filtered out, dried at 110°C for 6 hours, and then calcined at 550°C for 5 hours. The adsorbent A loaded with tungsten, nickel and cerium was prepared.

[0048] Adsorbent B

[0049] Take Al 2 O 3 60g, add 60g distilled water, 8g concentrated nitric acid and mix well, take 100g β-molecular sieve and 3g sesbania powder into the above mixture, extrude it, dry at 110℃ for 4 hours, and calcined at 550℃ for 5 hours. Into the catalyst c...

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Abstract

The invention discloses an adsorptive desulfurization technology for liquefied petroleum gas. At least two fixed bed reactors are adopted. The method comprises the steps as follows: the liquefied petroleum gas is firstly sent into the fixed bed reactors filled with adsorbents for adsorptive desulfurization reaction; when the adsorbent reaches an adsorption saturation state, the liquefied petroleumgas is transferred to another fixed bed reactor filled with the adsorbent for adsorptive desulfurization reaction continuously, and hydrogen is introduced into the fixed bed reactor filled with the adsorbent reaching adsorption saturation for regeneration. The adsorptive desulfurization technology has the advantages that no alkali residues are discharged, desulfurization precision is high and thelike, and organic sulfide can be removed from the liquefied petroleum gas.

Description

Technical field [0001] The invention relates to a liquefied petroleum gas desulfurization process, in particular to a process for removing sulfur in the liquefied petroleum gas by an adsorption method. Background technique [0002] With the continuous increase in the processing volume of high-sulfur crude oil in my country, the gas components produced in the refining process, especially the various sulfur compounds in the liquefied petroleum gas, are also increasing. In addition to hydrogen sulfide, there are organic sulfur such as mercaptans, sulfides, carbonyl sulfides, and disulfides. The presence of these sulfur compounds will cause the LPG to corrode the equipment during the subsequent processing and poison the catalyst. When the LPG is used as a fuel, it will produce sulfur oxides, form acid rain, and pollute the environment. Therefore, desulfurization of liquefied petroleum gas has both economic benefits and environmental protection significance. [0003] According to the ...

Claims

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Application Information

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IPC IPC(8): C10L3/12B01D53/04
CPCB01D53/04B01D2253/104B01D2253/108B01D2253/112B01D2257/30B01D2257/304B01D2257/306B01D2259/40083C10L3/12C10L2290/542
Inventor 刘新宇崔凯燕王海波乔凯王领民
Owner FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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