A multi-shell-side shell-and-tube heat exchanger

Abstract

The invention relates to a multi-shell-side shell-and-tube heat exchanger. The multi-shell-side shell-and-tube heat exchanger comprises a shell side. A containing cavity is formed in the shell side, a heat transfer tube bank is contained in the containing cavity, a dividing plate is further arranged in the containing cavity of the shell side and divides the containing cavity into a first cavity body and a second cavity body, and the first cavity body and the second cavity body are not communicated. The heat transfer tube bank comprises a first-stage tube bank body located in the first cavity body and a second-stage tube bank body located in the second cavity body, and the first-stage tube bank body and the second-stage tube bank body are connected front and back. After being subjected to first-stage heat exchange in the first cavity body with a coolant, a medium in the first-stage tube bank body enters the second-stage tube bank body and is subjected to second-stage heat exchange in the second cavity body. According to the multi-shell-side shell-and-tube heat exchanger, the shell side is evenly divided into the non-communicated cavity bodies through the dividing plate, multi-stage cooling of the heat transfer tube tank is achieved through the cavity bodies in sequence, the temperature of the medium can be suddenly decreased, and the temperature difference between a coolant inlet and a coolant outlet can be small; due to the slope design of the heat transfer tube bank, liquid is prevented from remaining in the tube bank, and the cleanliness of the heat transfer tube bank reaches the hygiene grade.

Description

technical field [0001] The invention belongs to the field of fluid temperature control, in particular to a multi-shell-side shell-and-tube heat exchanger. Background technique [0002] A heat exchanger, also known as a heat exchanger, is a device that transfers part of the heat of a hot fluid to a cold fluid. Heat exchangers are common equipment in chemical industry, petroleum, power, food and many other industrial sectors. They play an important role in production and can be used for heating medium and cooling medium. [0003] In the current biopharmaceutical field, each process basically has certain process requirements, especially for the temperature of the water used. The following takes the water cooling process as an example. For example, when cleaning equipment, it is required to reduce the injection water from 80°C to about 20°C instantaneously; when preparing biological products, it is required to reduce the water from 80°C to 2-8 ℃. Therefore, it is usually nece...

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Problems solved by technology

[0005] One solution is to allow water to pass through multiple heat exchangers continuously to achieve multi-stage cooling, but this method results in increased cost and occupied space

[0006] Another solution is to increase the heat exchange area of ​​a single heat exchanger. However, this method leads to an increase in the volume of the heat exchanger, and the refrigerant stays in a shell for too long, which may easily cause a large temperature difference between the inlet and outlet of the refrigerant. It increases the use space of the equipment and increases the workload of the refrigerant supply chain

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