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Rectification system for separating mixture rich in aromatic hydrocarbon

A rectification system and mixture technology, applied in hydrocarbon distillation, petroleum industry, etc., can solve the problems of large number of equipment, high operating cost, large investment, etc., and achieve the effect of less equipment, low operating cost and low energy consumption

Active Publication Date: 2013-02-13
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0004] The object of the present invention is to provide a rectification system for separating the mixture rich in aromatics, in order to overcome the existing separation methods mentioned in the background technology, such as extraction, extraction and adsorption, the number of equipment brought Many, large area, large investment; high operating costs; high energy consumption and other defects

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  • Rectification system for separating mixture rich in aromatic hydrocarbon
  • Rectification system for separating mixture rich in aromatic hydrocarbon
  • Rectification system for separating mixture rich in aromatic hydrocarbon

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Embodiment Construction

[0049] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0050] see figure 1 As shown, it is a functional block diagram of the rectification system for separating rich aromatics mixtures of the present invention; the described rectification system for separating rich aromatics mixtures includes: a preheating unit 1, in order to realize the preheating of hydrocracked gasoline hot;

[0051] A detoluene unit 2, which obtains the hydrocracked gasoline preheated by the preheating unit 1, and obtains light component hydrocarbon products, toluene products and C8~C9 heavy component hydrocarbon products through split flow, wherein the toluene The split flow of the product still needs to be heat-treated by the preheating unit 1, and can be separated after condensation treatment;

[0052] A heavy aromatics removal unit 3, which obtains the C8-C9 heavy component hydrocarb...

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Abstract

The invention relates to a rectification system for separating mixture rich in aromatic hydrocarbon. The system comprises a pre-heating unit, a methylbenzene removing unit, a heavy aromatic hydrocarbon removing unit and a separation controlling unit, wherein the pre-heating unit is used for realizing pre-heating on hydrocracking gasoline, the methylbenzene removing unit obtains the hydrocracking gasoline pre-heated by the pre-heating unit and splits the flow to obtain light-composition hydrocarbon products, methylbenzene products and C8-C9 heavy-composition hydrocarbon products, the heavy aromatic hydrocarbon removing unit obtains the C8-C9 heavy-composition hydrocarbon products from the methylbenzene removing unit and separates out heavy aromatic hydrocarbon products and C8 aromatic hydrocarbon, and the separation controlling unit is used for realizing control on the whole separation process.

Description

technical field [0001] The invention relates to a physical separation technology of petroleum substances, in particular to a system for separating a mixture rich in aromatics by rectification. Background technique [0002] Pyrolysis gasoline rich in aromatic hydrocarbon mixture is a large by-product inevitably associated with the production of ethylene in low-olefin units, and is an important raw material for the production of gasoline, petroleum resin, solvent oil and other chemical products. The pyrolysis gasoline by-product of the ethylene cracking unit is hydrogenated to remove C 5 and C 10 Distillate, and then after benzene extraction, the rest with C 7 ~C 9 The hydrocracked gasoline with the main components can be further separated to obtain products such as toluene and xylene. At present, the separation methods of aromatics that have been industrialized are mainly extraction, extraction and adsorption, etc., and aromatics extraction is widely used. Although the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G7/00
Inventor 黄文孙培华刘亚宏汪永宗王世侃季蒙
Owner BC P INC CHINA NAT PETROLEUM CORP
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