Horizontal Shell and Tube Heat Exchanger

Wuxi Hongdinghua Chemical Equipment Co., Ltd., as a professional manufacturer of Horizontal Shell and Tube Heat Exchanger, has many years of cooperation with customers from the petroleum, chemical, pharmaceutical, environmental protection, and metallurgical industries. The heat exchanger is the most widely used equipment among the equipmenst supplied by Wuxi Hongdinghua Chemical Equipment Co., Ltd. Especially for shell and tube heat exchangers.

Shell and tube heat exchangers can be classified into many different names according to their internal structure, or according to the medium flow mode within the shell and tube heat exchanger, or their applications, such as condenser, cooler, heater, preheater, reboiler, cold trap, multi tube pass condenser, U-tube heat exchanger, floating head heat exchanger, packing box heat exchanger, etc., with numerous names.

Wuxi Hongdinghua Chemical Equipment Co., Ltd. categorizes so many shell and tube heat exchangers according to their installation positions using more intuitive and understandable terms:

Vertical shell and tube heat exchanger

Horizontal shell and tube heat exchanger

The basic structure of all these heat exchangers with different names is almost with the same or similar structure;

The structure of a shell and tube heat exchanger includes the following:

Shell and tube heat exchangers are mainly composed of bonnet(integral cover), tube sheet, tubes, shells, and baffle plates. Usually, the shell is cylindrical; The pipes are straight or U-shaped. To improve the heat transfer efficiency of heat exchangers, threaded tubes, finned tubes, etc. can also be used. The pattern of tubes layout includes equilateral triangles, squares, corner squares, and corner triangle.

Characteristics and applications of Horizontal Shell-Tube Heat Exchanger:

A horizontal shell and tube heat exchanger consists of a shell and a tube bundle containing many tubes, and the heat exchange between cold and hot fluids is carried out through the tube walls. As a traditional standard heat exchange equipment, horizontal shell and tube heat exchangers are widely used in chemical industry, oil refining, petrochemical industry, power, nuclear energy and other industrial devices, especially in high-temperature and high-pressure and large-scale heat exchangers, which occupy absolute advantage.

Details of Horizontal Shell-Tube Heat Exchanger:

Usually, the working pressure of horizontal shell and tube heat exchangers can reach 4 MPa, and the working temperature is below 200 ℃. In some cases, higher pressure and temperature can also be achieved. Generally, the diameter of the shell is below 1800 millimeters, and the length of the tube is below 9 meters. In some cases, there are also larger or longer tubes.

The wall surface of the tube bundle enclosed in the shell serves as the heat transfer surface of the inter wall heat exchanger.Horizontal shell and tube heat exchanger has a simple structure, low cost, wide flow cross-section, and is easy to clean scale; However, the heat transfer coefficient is low and the floor area is less than that of horizontal type shell and tube heat exchanger . It can be manufactured from various structural materials (mainly metal materials) and can be used at high temperatures and pressures, making it most widely used .Horizontal Shell and tube heat exchangers include horizontal fixed tube sheet steam water heat exchangers, horizontal shell and tube steam water heat exchangers with expansion joint, horizontal floating head steam water heat exchangers, horizontal U-shaped shell and tube steam water heat exchangers, horizontal corrugated shell and tube steam water heat exchangers,horizontal segmented water water heat exchangers and other types. The main control parameters of shell and tube heat exchangers are heating area, hot water flow rate, heat exchange capacity, and heat medium parameters.

The fixed tube sheet structure is relatively simple, compact, and inexpensive, but the outer part of the tube cannot be mechanically cleaned. This type of heat exchanger tube bundle is connected to a tube plate, which is welded to both ends of the shell and connected to a top cover. The top cover and the shell are equipped with fluid inlet and outlet nozzles. Usually, a series of baffles perpendicular to the tube bundle are installed outside the tube. At the same time, the connection between the tube and the tube plate and the shell is rigid, while the inside and outside of the tube are two fluids of different temperatures.

One tube plate of a floating head heat exchanger is connected to the shell with a flange, while the other tube plate is not connected to the shell, so that the tube can freely expand and contract when heated or cooled. However, a top cover is connected to this tube plate, which is called a "floating head". Therefore, this type of heat exchanger is called a floating head heat exchanger.

Its advantage is that the tube bundle can be pulled out for easy cleaning; The expansion of the tube bundle does not change the constraint of the shell, so when the temperature difference between the two heat exchanger media is large, there will be no thermal stress generated due to the difference in thermal expansion between the tube bundle and the shell.

U-shaped tube heat exchanger, each tube is bent into a U-shaped shape, and both ends are fixed on the same tube plate. Each tube can be freely retracted to solve the problem of thermal compensation. The tube pass shall be at least two passes, the tube bundle can be drawn out for cleaning, and the tube can be Free expansion. The advantages are simple structure, light weight, and suitable for high temperature and high pressure conditions.

One end of the packed box heat exchanger tube bundle can expand Free expansion, the structure is simpler than the floating head type, and the cost is lower than the floating head type.

1. Heat exchanger type: A: tubular type B: U- tube type C: floating head type

2. Heat exchange area: ______square meters (㎡)

3. Working pressure: Tube side ______MPa Shell side ______MPa

4. Working temperature: tube side ______℃ shell side ______℃

5. Material: 

tube side A: 20#£ B: S30408£  C: S32168£ D: S31603£ E: Other

Shell side A: Q235B £ B: S30408£ C: S32168£ D: S31603£ F: Other 

6. Heat exchange tube specifications(diameter and wall thickness): 

7. Type: A: Vertical B: Horizontal

8. Tube side: A: Single tube pass £ B: Double tube passes£ C: Four tube passes£ D: Six tube passes£

Horizontal Shell-Tube Heat Exchanger