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Method and equipment for building gas phase circulation driven by inert gas in hydrocarbon class of liquid phase in narrow distillation

A technology of gas phase circulation and inert gas, applied in the direction of chemical instruments and methods, chemical/physical processes, etc., can solve the problems of reduced normal operation efficiency, large pressure fluctuations, unstable flow, etc., and achieve the effect of overcoming the design load method

Active Publication Date: 2006-12-06
PETROCHINA CO LTD
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Problems solved by technology

It is suitable for the process of using heaters (heat exchange equipment, heating furnace) to convert the liquid-phase cycle of mixed hydrocarbons with a narrow boiling range into gas-phase cycle; High, low efficiency in normal operation, and overcome the above-mentioned equipment is easy to form gas-liquid mixed-phase flow phenomenon, large pressure fluctuations, unstable flow, unsafe production

Method used

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  • Method and equipment for building gas phase circulation driven by inert gas in hydrocarbon class of liquid phase in narrow distillation

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Embodiment Construction

[0018] As shown in the drawings of the description, the device for promoting the establishment of gas-phase circulation by narrow-fraction liquid-phase hydrocarbon inert gas is based on the original equipment, and an inert gas inlet (3) is connected to the outlet pipeline of the circulation pump (1). A one-way valve is installed on the inert gas inlet (3) pipeline to prevent hydrocarbon materials from flowing backward; there is also a flow control valve to adjust the amount of inert gas entering the cycle. The specification of the inert gas inlet (3) can be determined by the designer according to the capability of the equipment. The original equipment includes circulating pump (1), raw material inlet (2), feed heat exchanger (4), raw material heating furnace (5), reactor (6), cooler (7) and circulating buffer tank (9) . The liquid outlet of the circulation buffer tank (9) is connected to the inlet of the circulation pump (1). The gas outlet (8) of the circulating buffer tank...

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Abstract

An inertial gas driving method for creating the gas-phase circulation by liquid-phase circulation in the gas0phase reaction procedure of narrow-fraction liquid-phase hydrocarbon includes such steps as creating the liquid-phase circulation of narrow-fraction hydrocarbon, introducing inertial gas to it, gradual heating for stably evaporating the hydrocarbon, heating the liquid-phase material by overheat vapor circulation, heat exchange of inertial gas, exhausting the inertial gas, and gradually cutting off the inertial gas to create gas-phase circulation.

Description

Technical field [0001] The invention relates to a method for establishing a gas-phase cycle in a gas-phase reaction device for a narrow-fraction liquid-phase hydrocarbon material, in particular to a new method for promoting the establishment of a gas-phase cycle by adopting an inert gas at the initial stage, and belongs to the technical field of oil refining and chemical production Background technique [0002] In oil refining and chemical production, in order to increase the amount of raw materials of C4, C5, and C6 isomeric olefins, the process of skeletal isomerization of olefins is often adopted to convert normal olefins into tertiary carbon position isomeric olefins, and further react the product with methanol to produce formazan Methyl tert-butyl ether (MTBE), methyl tert-amyl ether (TAME) or methyl tert-hexyl ether (HxME). A gas phase cycle needs to be established prior to the reaction. [0003] In the gasoline etherification unit introduced by Nanchong Refinery and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02
Inventor 段启彬华洪基兰洪平程正勇
Owner PETROCHINA CO LTD
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