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Epoxypropane co-oxidation method co-production process waste liquidtreatment method

A technology of co-oxidation and propylene oxide is applied in the treatment field of co-oxidation co-production process waste liquid, which can solve the problems of uneconomical benefit of resource recycling, high cost, long separation and subsequent product refining process, etc. Improve economic and social benefits, increase productivity, and achieve the effect of resource recycling

Active Publication Date: 2021-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above method of treating high-concentration waste liquid in the production of propylene oxide can realize the recovery and utilization of valuable components in the waste liquid, but it is also limited to certain components. The process of separation and subsequent product refining is long, and new equipment and investment are required. Cost High, it is not economical to improve the efficiency of resource recycling

Method used

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  • Epoxypropane co-oxidation method co-production process waste liquidtreatment method
  • Epoxypropane co-oxidation method co-production process waste liquidtreatment method

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Experimental program
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Effect test

Embodiment 1

[0064] according to figure 1 process to test. Raw materials include: PO / MTBE waste liquid and heavy feedstock oil. The catalytic cracking reaction is carried out on a medium-sized device of an equal diameter riser reactor. The preheated PO / MTBE waste liquid (preheated to 390°C) enters the lower part of the riser reactor, and the preheated heavy feed oil (preheated to 230°C) enters the feed port above the PO / MTBE waste liquid feed port Enter the lower part of the riser reactor for catalytic cracking reaction. The pre-lift medium enters from the bottom of the riser reactor through the pre-lift medium pipeline, and the regenerated catalyst from the fourth regenerated catalyst inclined pipe line enters the bottom of the riser reactor after being adjusted by the second regeneration slide valve. The lower riser reactor moves upwards at an accelerated speed, and first reacts with the PO / MTBE waste liquid from the waste liquid feed line of the co-oxidation process of propylene oxid...

Embodiment 2

[0067] According to the method of embodiment 1, PO / MTBE waste liquid and heavy stock oil are sent into the riser reactor successively with catalytic cracking catalyst contact reaction, difference is, according to the flow direction of reaction material in the riser reactor, PO / MTBE The distance between the feed port of the waste liquid and the feed port of the heavy crude oil accounts for 10% of the height of the riser reactor. The operating conditions and product distribution are listed in Table 3.

Embodiment 3

[0069] According to the method of embodiment 1, PO / MTBE waste liquid and heavy feedstock oil are sent into the riser reactor successively with catalytic cracking catalyst contact reaction, difference is, the unit time of PO / MTBE waste liquid and heavy feedstock oil is carried out The material weight ratio is 0.3:1. The operating conditions and product distribution are listed in Table 3.

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Abstract

The invention relates to the field of catalytic cracking, and discloses an epoxypropane co-oxidation method co-production process waste liquid treatment method, which comprises: sequentially contacting epoxypropane co-production process waste liquid and heavy raw material oil with a catalytic cracking catalyst to carry out a catalytic cracking reaction so as to obtain a reaction product and a spent catalyst; separating the reaction product from the spent catalyst, regenerating the obtained spent catalyst, and using the regenerated catalyst as the catalytic cracking catalyst. When the treatmentmethod is used for treating the epoxypropane co-oxidation method co-production process waste liquid, the epoxypropane co-oxidation method co-production process waste liquid which is basically free ofvalue can be converted into a high-value product through a mature process, and resource recycling is achieved; by adopting the catalytic cracking treatment method, the treatment difficulty of the epoxypropane co-oxidation method co-production process waste liquid is not increased, and meanwhile, the yields of propylene and butene are increased.

Description

technical field [0001] The invention relates to a treatment method for co-production process waste liquid of propylene oxide co-oxidation method. Background technique [0002] Propylene oxide (PO for short), also known as methyl oxirane and propylene oxide, is the third largest propylene derivative after polypropylene and acrylonitrile, and is an important basic organic chemical synthesis. raw material. The current industrialized propylene oxide production processes include chlorohydrin method, co-oxidation method, cumene oxidation method, and hydrogen peroxide direct oxidation method. Among them, the chlorohydrin method is the most widely used. It requires low purity of raw material propylene, good product selectivity, large operating load flexibility, and short production process, which greatly reduces infrastructure costs. However, the product quality of the chlorohydrin method is not high. The process consumes a lot of water resources and produces a lot of waste water ...

Claims

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Application Information

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IPC IPC(8): C10G55/06C10G11/05C07C1/24C07C11/06C07C11/08
CPCC10G55/06C10G11/05C07C1/24C10G2300/1022C10G2300/1037C10G2300/107C10G2300/1077C10G2300/10C10G2300/70C10G2400/02C10G2400/20C07C11/06C07C11/08Y02P20/52Y02P20/584
Inventor 陈学峰魏晓丽龚剑洪张久顺
Owner CHINA PETROLEUM & CHEM CORP
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