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A Liquefied Petroleum Gas Adsorption Desulfurization Process

A technology for liquefied petroleum gas and adsorption desulfurization, applied in the petroleum industry, gas fuel, gas treatment and other directions, can solve the problems of low sulfur adsorption desulfurization agent, large difference in process conditions, unfavorable promotion and application, etc. Increased sulfur capacity and enhanced chemisorption

Active Publication Date: 2020-08-11
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 regeneration process very frequent. As well as the large industrial cost, which is not conducive to popularization and application, the present invention provides a novel adsorption desulfurization method

Method used

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  • A Liquefied Petroleum Gas Adsorption Desulfurization Process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Sorbent preparation

[0030] Adsorbent A

[0031] Take Al 2 o 3 50g, add 60g of distilled water, 8g of concentrated nitric acid and mix evenly, take 100g of 13X molecular sieve, add 3g of scallop powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours to prepare carrier for the catalyst. Dissolve 15g of ammonium metatungstate and 3g of nickel nitrate in distilled water to prepare a 200g solution. The carrier is immersed in the solution and shaken. After about 6 hours, the carrier is filtered out, dried at 110° C. for 6 hours, and then calcined at 550° C. for 5 hours. 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 evenly, take 100g of Y-type molecular sieve, add 3g of scallop powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours to prepare carrier for t...

Embodiment 2

[0037] Sorbent preparation

[0038] Adsorbent A

[0039] Take Al 2 o 3 20g, add 50g of distilled water, 8g of concentrated nitric acid and mix well, take 100g of 13X molecular sieve, add 3g of scallop powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours to obtain Catalyst carrier. Dissolve 15g of ammonium metatungstate, 5g of nickel nitrate and 1g of cerium nitrate in distilled water to prepare a 200g solution. The carrier is immersed in the solution and shaken. After about 6 hours, the carrier is filtered out, dried at 110° C. for 6 hours, and then calcined at 550° C. for 5 hours. Adsorbent A loaded with tungsten-nickel-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 evenly, take 100g of Y-type molecular sieve, add 3g of scallop powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours to prepare ...

Embodiment 3

[0045] Sorbent preparation

[0046] Adsorbent A

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

[0048] Adsorbent B

[0049] Take Al 2 o 3 60g, add 60g of distilled water, 8g of concentrated nitric acid and mix evenly, take 100g of β-type molecular sieve, add 3g of scallop powder to the above mixture, extrude, dry at 110°C for 4 hours, and calcined at 550°C for 5 hours...

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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 process for desulfurizing liquefied petroleum gas, in particular to a process for removing sulfur in liquefied petroleum gas by an adsorption method. Background technique [0002] As my country's processing of high-sulfur crude oil continues to increase, the gas components produced in the refining process, especially the various sulfur-containing compounds in liquefied petroleum gas, are also increasing. In addition to hydrogen sulfide, there are organic sulfur such as mercaptans, thioethers, carbonyl sulfide, and disulfides. The existence of these sulfur-containing compounds will corrode the equipment and poison the catalyst in the subsequent processing of liquefied petroleum gas; and when liquefied petroleum gas is used as 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 significanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/04B01D53/48C10L3/12
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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