Heat-exchange equipment

Shell-and-tube heat exchanger
Shell-and-tube heat exchanger
Floating-head heat exchanger
Floating-head heat exchanger
Shell-and-tube evaporator
Shell-and-tube evaporator
Flow-type heater
Flow-type heater

Heat exchange equipment is widely used in the oil and gas and chemical industries for technological operations in which it is required to maintain a predetermined operating temperature.

TH SARRZ supplies heat exchangers of various types directly from manufacturers that allows us to complete Your facility with the most suitable equipment.

The need for the use of industrial heat exchange equipment is on the the requirements of operating procedure at the facility. Many process parameter, for example, process reaction rate, chemical reaction intensification, etc., depend on the operating temperature requirements (hot and cooling processes). If the processes result in heat release, it should be recovered with technological  and economic benefits.

Classification of heat exchangers

Heat exchangers can be of different designs depending on their application, operating procedure specifics, the properties of the working medium, its speed and time spent in the apparatus, the operating pressure, as well as the requirements for the operating temperature and the possibility of its regulation.

Classification of heat exchange equipment is based on various characteristics:

  • structural design — apparatus made of pipes; apparatus with a heat exchange surface of sheet material; apparatus with a surface of non-metallic materials
  • principle of action - recuperative (working fluid and heat-transfer medium contact through the shell) and regenerative (separating wall is also a source of heat)
  • its application - heat exchangers, heaters, evaporators, condensers, deaerators, economizers, etc.
  • heat-transfer medium flow direction - flow-type, counterflow, cross-flow, etc.
  • heat transfer methods - surface (through the working surface), mixing (by mixing the working product and the heat-transfer medium)
  • orientation - vertical, horizontal
  • types of processing medium - liquid/liquid (water-to-water), vapor-liquid and gas-liquid

The heat exchange equipment design

The principle of action of the heat exchange equipment is the heat exchange between the heat-transfer medium and the processing medium. The heat-transfer medium can be water, saturated steam, oil, warmed gas or air. When choosing a heat-transfer medium, the temperature limits and the maximum possible pressure in the system are taken into account. Heat-transfer fluid and steam have a maximum heating temperature of +150-160°C and a pressure of up to 0.7 MPa. When using oil temperature can reach 200°C. The maximum heating (300-1000°C) is achieved with warmed gases or air.

Depending on the type of heat-transfer medium and structural design of the heat exchange tank, the former may circulate through the pipes and shell side, plates, between the shells of the inner vessel and outer casing, through the grids, etc.

For the optimal choice of the heat exchanger in compliance with the requirements to its pressure resistance, as well as its material and design, heat exchanger thermal design is carried out to obtain the maximum efficiency at minimum heat energy costs and heat-transfer efficiency increase.

Types of heat-exchange equipment to be supplied

  • shell-and-tube heat exchanger
  • shell-and-multitube cooler
  • shell tube type condenser
  • shell-and-tube evaporator
  • floating-head heat exchanger
  • U-tube tubesheet heat exchanger
  • tube-in-tube heat exchanger
  • aftercooler
  • boiler
  • steam-water heater
  • water-to-water heater
  • fuel-oil heater
  • flash steam cooler
  • flow-type heater

Heat exchange equipment specifications

Criteria Value
1 Operating pressure, MPa 0.6-8.0
2 Diameter, mm 150-1400
3 Heat exchange surface area, m2 up to 1000
4 Apparatus length, mm 11500
5 Heat-transfer medium temperature, °С up to +450
6 Seismic activity in the area of construction, points up to 7
7 Climatic category N, NF, Т
8 Property class 1, 2, 3

 


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