A heat exchange system and process for an atmospheric and vacuum device

A technology of atmospheric and vacuum devices and heat exchange systems, which is applied in the direction of indirect heat exchangers, heat exchanger types, and the petroleum industry, and can solve problems such as inability to recover heat to the maximum extent, heat loss, and large investment in equipment
CN104479735BActive Publication Date: 2016-03-30ZHENHAI PETROCHEM JIANAN ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENHAI PETROCHEM JIANAN ENG
Publication Date
2016-03-30

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Abstract

The invention relates to a heat exchange system and process of an atmospheric and vacuum distillation unit. Heat exchangers having special structures are adopted, multiple streams of material flow are simultaneously or sequentially subjected to heat exchange with material flow in shell pass, the resistance is reduced, the heat exchange efficiency is high, the temperature difference at a hot end is small, the operation is stable, the fouling resistance is good, the occupation area and investment of equipment are reduced, a heat exchange network is optimized, the temperature of a crude oil heat exchange terminal is increased, the crude oil heat exchange temperature can be increased by 4-5 DEG C under the condition that a heat exchange source is unchanged, and the energy saving and consumption reducing effects are very remarkable.
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Description

technical field

[0001] The invention relates to a chemical device and a process, in particular to a heat exchange system and a process for an atmospheric and vacuum device. Background technique

[0002] Heat exchange is a very important means of energy exchange and recycling in chemical plants. Atmospheric and vacuum equipment is a device that cuts crude oil into naphtha, aviation kerosene, diesel oil, wax oil and vacuum residue fractions by means of distillation according to the difference in boiling point of each component in crude oil. The level of distillation technology is directly related to It affects the quality, income and economic benefits of subsequent devices. As the first process of crude oil processing, the energy consumption of atmospheric and vacuum devices accounts for about 14% to 15% of the total energy consumption of the refinery. Through the heat exchange system, the crude oil exchanges heat with each distillate oil, recovers the waste heat of each dis...

Claims

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