Technology for processing alkylated waste acid by using sulphur apparatus

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, High Claus catalytic activity and excellent anti-coking performance

Active Publication Date: 2016-12-28
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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  • Technology for processing alkylated waste acid by using sulphur apparatus
  • Technology for processing alkylated waste acid by using sulphur apparatus
  • Technology for processing alkylated waste acid by using sulphur apparatus

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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 concretely relate to a technology for processing alkylated waste acid by using a sulphur apparatus. In the technology, the upper part of a primary converter is filed with a catalysis protective agent, the lower part is filled with a multifunctional sulfur recovery catalyst; and the whole part of a secondary converter is filled with an alumina-based sulfur recovery catalyst. The technology realizes the low investment and high efficiency processing of the alkylated waste acid; SO3 in the high-temperature process gas can be processed in a reasonable mode, the apparatus corrosion problem is avoided, the SO3 conversion rate can reach 97% or more; influence of remainder iron in the waste acid is eliminated, the iron mass content in the sulphur product is less than 0.005%; the influence of carbon deposit on the catalyst is eliminated, and a claus catalyst is effectively protected. The catalyst can keep high claus catalytic activity and organic sulfur hydrolysis activity, the total sulfur conversion rate of the apparatus can reach 96.5% or more. The catalyst service life is prolonged, and the long-period operation of the sulphur recovery device is achieved.

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 plant. 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 80-100k...

Claims

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Application Information

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Patent Type & Authority Applications(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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