Process of Alkylation Spent Acid Treatment Using Sulfur Plant

A technology of alkylation waste acid and sulfur plant, which is applied in the direction of sulfur preparation/purification, etc., which can solve the problems of prolonging the operation period of the catalyst and the difficulty in the treatment of waste acid in the alkylation plant, so as to eliminate the influence of carbon deposits on the catalyst, Effect of high Claus catalytic activity and improvement of Claus conversion rate

Active Publication Date: 2018-07-03
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a process for treating alkylation waste acid with sulfur plant, eliminate the impact of alkylation waste acid on catalyst of sulfur recovery unit, sulfur product quality and plant equipment, and keep the catalyst of sulfur recovery unit at a high level. Claus activity, prolonging the catalyst operation period, ensuring the normal operation of the sulfur recovery unit, and solving the difficult problem of waste acid treatment in the existing and new alkylation units

Method used

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  • Process of Alkylation Spent Acid Treatment Using Sulfur Plant
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  • Process of Alkylation Spent Acid Treatment Using Sulfur Plant

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Embodiment 1

[0056] The present invention utilizes sulfur device to process the technology of alkylation waste acid specifically as follows:

[0057] The upper part of the primary converter is filled with 15% catalytic protector, the middle part is filled with 60% large pore volume and large pore diameter alumina-based sulfur recovery catalyst, and the bottom is filled with 25% multifunctional sulfur recovery catalyst. For details, see figure 1 ; The secondary converters are all filled with large pore volume and large pore diameter alumina-based sulfur recovery catalysts, see figure 2 . The catalytic protector adopts the LH-04 catalytic protector developed by the Research Institute of Sinopec Qilu Branch, the large pore volume and large pore size alumina-based sulfur recovery catalyst adopts the LS-02 catalyst developed by the Research Institute of Sinopec Qilu Branch, and the multifunctional sulfur recovery catalyst adopts The LS-981 catalyst developed by the Research Institute of Sinop...

Embodiment 2

[0059] The present invention utilizes sulfur device to process the technology of alkylation waste acid specifically as follows:

[0060] The upper part of the primary converter is filled with 10% catalytic protector, the middle part is filled with 50% large pore volume and large pore diameter alumina-based sulfur recovery catalyst, and the bottom is filled with 40% multifunctional sulfur recovery catalyst. For details, see figure 1 ; The secondary converters are all filled with large pore volume and large pore diameter alumina-based sulfur recovery catalysts, see figure 2 . The catalytic protector adopts the LH-04 catalytic protector developed by the Research Institute of Sinopec Qilu Branch, the large pore volume and large pore size alumina-based sulfur recovery catalyst adopts the LS-02 catalyst developed by the Research Institute of Sinopec Qilu Branch, and the multifunctional sulfur recovery catalyst adopts The LS-981 catalyst developed by the Research Institute of Sinop...

Embodiment 3

[0062] The present invention utilizes sulfur device to process the technology of alkylation waste acid specifically as follows:

[0063] The upper part of the primary converter is filled with 5% catalytic protector, the middle part is filled with 90% large pore volume and large pore diameter alumina-based sulfur recovery catalyst, and the bottom is filled with 5% multifunctional sulfur recovery catalyst. For details, see figure 1 ; The secondary converter is filled with a large pore volume and large pore size alumina-based sulfur recovery catalyst, see figure 2 . The catalytic protector adopts the LH-04 catalytic protector developed by the Research Institute of Sinopec Qilu Branch, the large pore volume and large pore size alumina-based sulfur recovery catalyst adopts the LS-02 catalyst developed by the Research Institute of Sinopec Qilu Branch, and the multifunctional sulfur recovery catalyst adopts The LS-981 catalyst developed by the Research Institute of Sinopec Qilu Bra...

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Abstract

The invention belongs to the technical field of petroleum processing, and in particular relates to a process for treating alkylation waste acid by using a sulfur device. In the process, the upper part of the primary converter is filled with a catalyst protector, and the lower part is filled with a multi-functional sulfur recovery catalyst; all the secondary converters are filled with an alumina-based sulfur recovery catalyst. The invention realizes low-investment and high-efficiency treatment of alkylation waste acid; reasonably handles SO3 in high-temperature process gas, avoids the problem of device corrosion caused by it, and the conversion rate of SO3 reaches more than 97%; eliminates residual iron in waste acid The iron mass content in the sulfur product is less than 0.005%; eliminate the influence of carbon deposits on the catalyst, and effectively protect the Claus catalyst. The catalyst of the invention can maintain high Claus catalytic activity and organic sulfur hydrolysis activity, and the total sulfur conversion rate of the device can reach more than 96.5%. The invention prolongs the service life of the catalyst and can realize the long-period operation of the sulfur recovery device.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing, and in particular relates to a process for treating alkylation waste acid by using a sulfur device. Background technique [0002] Alkylation is the reaction of isobutane and olefins under the action of a strong acid catalyst to produce alkylate oil. Alkylated oil has high octane number, low sensitivity (the difference between research octane number and motor octane number), does not contain sulfur, aromatics, and olefins, and has ideal volatility and clean combustion. It is an excellent choice for aviation gasoline It is an ideal blending component of motor gasoline. With the urgent need to upgrade the quality of gasoline and the increasingly high environmental protection requirements, the importance of alkylation has become increasingly prominent. [0003] Most of my country's refineries use sulfuric acid alkylation process with concentrated sulfuric acid as a catalyst, and 80-100...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/04
Inventor 刘爱华徐翠翠刘剑利陶卫东刘增让张玉红张艳松
Owner CHINA PETROLEUM & CHEM CORP
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