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Multi-shell-pass tube type heat exchanger

A tube-and-tube heat exchanger and multi-shell technology, which is applied in the direction of heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of uncompact equipment and pipelines, large system resistance, and high power consumption , to achieve the effect of eliminating the need for pipelines between equipment, reducing fluid resistance, and reducing equipment manufacturing costs

Active Publication Date: 2014-05-28
SINOPEC SHANGHAI ENG +1
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, when one fluid exchanges heat successively with multiple other fluids, the equipment and pipelines with multiple heat exchangers are not compact, the investment is large, the system resistance is large, and the power consumption is high. problem, providing a new multi-shell shell-and-tube heat exchanger

Method used

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  • Multi-shell-pass tube type heat exchanger

Examples

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Effect test

Embodiment 1

[0021] use figure 1 In the tube-and-tube heat exchanger shown, the heat exchange tubes are 12 meters long (according to the standard series of heat exchanger tube lengths), and the shell side is divided into 5.5 meters and 6.5 meters at a distance of 5.5 meters from one end of the tube plate with an internal sealing partition. There are two mutually isolated heat exchange sections, and there are four baffle plates in each heat exchange section. The reaction outlet gas goes through the tube side, and the two streams before and after the acetic acid evaporator exchange heat with the tube side fluid in two isolated heat exchange sections of 5.5 meters and 6.5 meters respectively.

[0022] Compared with two separate tube-and-tube heat exchangers, the combined heat exchanger equipment can save more than ten tons of high-grade acid-resistant alloy steel and more than 30 meters of high-grade acid-resistant alloy steel pipes with a diameter of 800mm, reducing the system resistance by ...

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Abstract

The invention relates to a multi-shell-pass tube type heat exchanger, which mainly solves the problems that in the prior art multiple heat exchangers are adopted when a fluid is in heat exchange with various other fluids sequentially, the equipment and pipelines are not compact, the investment is large, the system resistance is large and the power consumption is large. The multi-shell-pass tube type heat exchanger comprises a tube pass fluid inlet, a tube box, a heat exchange area and a tube pass fluid outlet; the heat exchange area comprises a heat exchange tube nest for allowing tube pass fluid to pass through, baffle plates, shell pass fluid inlets and shell pass fluid outlets; a sealing clapboard is utilized for dividing the shell pass of the heat exchange area into at least two mutually independent shell pass heat exchange sub-areas, the independent shell pass heat exchange sub-areas are provided with independent shell pass fluid inlets and shell pass fluid outlets. By adopting the technical scheme, the problems are well solved, and the multi-shell-pass tube type heat exchanger can be applied to tube type heat exchanger combination in the petrochemical industry, the chemical engineering industry and the like.

Description

technical field [0001] The invention relates to a multi-shell-side shell-and-tube heat exchanger. Background technique [0002] Tube and tube heat exchange equipment is commonly used chemical equipment in petrochemical, chemical, pharmaceutical and other industries. For example, the document CN202229632U ​​discloses a tube-and-tube heat exchanger. This tube-and-tube heat exchanger is composed of a head installed at both ends of the heat exchange cylinder, and a central tube, tubes, and spiral plates are installed in the heat exchange cylinder. , a spiral plate is installed in the annular space between the central tube and the heat exchange cylinder, and the central tube, the spiral plate, and the heat exchange cylinder together form a spiral channel along the axial direction of the heat exchanger; the spiral plate is provided with an ellipse The tubes pass through the elliptical holes on the spiral plate and are installed in the spiral channel, and the tubes are arranged in...

Claims

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Application Information

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IPC IPC(8): F28D7/16F28F9/02
Inventor 陈为群李艳明王江义李勇董万霞
Owner SINOPEC SHANGHAI ENG
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