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N-butane isomerization system

A technology of isomerization and n-butane, which is used in the fields of isomerization to produce hydrocarbons, organic chemistry, hydrocarbons, etc., can solve the problem of isobutane waste, and achieve the effect of reducing waste and accelerating volatilization.

Pending Publication Date: 2020-12-01
NINGXIA JINYUHAI CHEM
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Problems solved by technology

[0005] In view of this, the present invention provides a n-butane isomerization system to solve the technical problem that a large amount of isobutane is wasted due to the direct incineration of isobutane in the gas phase in a flat column in the prior art

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  • N-butane isomerization system

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Embodiment Construction

[0020] The technical solutions and technical effects of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings of the present invention.

[0021] Please see figure 1 , in a specific embodiment, a n-butane isomerization system 10 includes a raw material buffer tank 100 connected by pipelines, a light hydrocarbon removal tower 200, a hydrogenation reactor 300, an isomerization reactor 400, an isobutane Stabilize the tower 500 and the isobutane separation tower 600 .

[0022] The raw material buffer tank 100 is used to initially remove light components in the raw material n-butane, the raw material buffer tank 100 is connected with a normal butane feed pipe 110, and the gas phase of the raw material buffer tank 100 is connected with a dry Gas collection tube 700. The raw material n-butane first enters the raw material buffer tank 100, under the slight negative pressure, light components of C3 and below ar...

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Abstract

The invention provides an n-butane isomerization system, and belongs to the technical field of deep processing of oil and gas. The system comprises a raw material buffer tank, a light hydrocarbon removal tower, a hydrogenation reactor, an isomerization reactor, an isobutane stabilization tower and an isobutane separation tower which are connected through pipelines, and the tower top gas phase of the isobutane stabilization tower is connected with the raw material buffer tank. The method comprises the following steps: removing light components from n-butane serving as a raw material through a light hydrocarbon removal tower, performing hydrogenation reaction to produce saturated olefin substances, feeding the saturated olefin substances into the isomerization reactor, and performing an isomerization reaction under the action of a catalyst; discharging an isomerization reaction product into the isobutane stabilization tower, discharging C4 or above components into the isobutane separation tower from the tower kettle of the isobutane stabilization tower, and separating isobutane components; and introducing the tower top light component gas phase of the isobutane stabilization tower into the raw material buffer tank, and recovering isobutane. Through detection, isobutane accounting for about 75% of the total amount of iso-butane in the tower top gas phase of the isobutane stabilization tower can be recovered, and waste of the isobutane components is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of deep processing of oil and gas, and in particular relates to an n-butane isomerization system. Background technique [0002] Isomerization of n-butane to produce isobutane is an important oil and gas deep processing process. The isobutane product is one of the raw materials for the production of high-octane gasoline. At the same time, isobutane is also used to prepare gasoline additive methyl One of the important raw materials of tert-butyl ether and ethyl tert-butyl ether. [0003] The process of isomerization of n-butane to produce isobutane mainly includes light component removal from raw materials, hydrogenation of unsaturated olefins in saturated raw materials, isomerization in the presence of catalysts, and separation of isomerized products. For example, the Chinese invention patent No. 201610256689.3 discloses a device and method for preparing isobutane. The device includes a pre-light removal tow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/163C07C5/27C07C7/11C07C7/04C07C9/12
CPCC07C5/277C07C7/04C07C7/11C07C7/163C07C9/12
Inventor 杨永凯魏建文王杰李占武高松林单杰杨彦明赵明
Owner NINGXIA JINYUHAI CHEM
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