A method for adsorption and desulfurization of liquefied petroleum gas

A technology for liquefied petroleum gas and adsorption desulfurization, which is applied in chemical instruments and methods, separation methods, and the petroleum industry. It can solve the problems of low sulfur in adsorption desulfurizers, large differences in process conditions, and unfavorable popularization and application, and achieve an increase in adsorption sulfur capacity. , to achieve long-term operation, enhanced chemical adsorption effect

Active Publication Date: 2021-08-06
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 method for adsorption and desulfurization of liquefied petroleum gas

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 a method for adsorption and desulfurization of liquefied petroleum gas. A fixed-bed reactor is adopted. The fixed-bed reactor is a sleeve-shaped reactor, which includes an inner cylinder and an outer cylinder. The adsorption desulfurization reaction is carried out in the inner cylinder. When the adsorbent in the inner cylinder reaches the adsorption saturation state, the liquefied petroleum gas is switched to the outer cylinder filled with the adsorbent to continue the adsorption desulfurization reaction, and hydrogen is introduced into the inner cylinder that has reached the adsorption saturation. to regenerate. The adsorption desulfurization method of the invention can remove the organic sulfide in the liquefied petroleum gas, has the advantages of no alkali slag discharge, high desulfurization precision and the like.

Description

technical field [0001] The invention relates to a method for adsorption and desulfurization of liquefied petroleum gas, in particular to a method for removing mercaptans in liquefied petroleum gas by adsorption. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/04C10L3/12
CPCB01D53/04B01D2253/104B01D2253/108B01D2253/112B01D2257/30B01D2257/306B01D2259/40083C10L3/12C10L2290/542
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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