Chemistry and Technology of Fuels and Oils, Vol. 38, No. 3, 2002
HIGH-EFFICIENCY BEARING-BUSHING HEAT EXCHANGER
N. V. Voloshin, V. L. Dolmatov, M. M. Kazakov, UDC [621.565.93/94:658.512.011.56] (035)
A. K. Shestopalov, Yu. A. Yakubenko,
and Yu. L. Ovchinnikov
INTEKO Testing Center Ltd. Promikhimapparat Industrial Association Closed Joint-Stock Company.
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 21 23, May June, 2002.
0009-3092/02/38030162$27.00Ó2002Plenum Publishing Corporation
Increasing the rated capacity of process plants by modernizing tower equipment usually makes it
necessary to increase heat-exchange surface areas. This problem is frequently solved by installing
additional heat-exchange equipment in available space or enhancing heat exchange on existing
equipment when there is no free space. A similar problem also arises when it is necessary to
economize on heat carriers in operation of heat-exchange systems.
In studying the experience in updating heat-exchange equipment, we isolated the following basic trends
in enhancing heat exchange:
replacing the tube bank by a plate bank (the most efficient, but also the most expensive method with
important restrictions on use in oil refining) ;
changing the bank tube configuration to undulating, spiral, etc. (complicates the technology for
manufacturing and servicing the equipment) ;
incorporating additional elements in the design of the heat exchanger .
Of these trends, we prefer the last one, since the production unit does not become much more expensive
when additional elements are introduced in standard shell and tube heat exchangers and the indexes of the
increased heat-transfer efficiency remain relatively good. According to the data in , the efficiency of heat
exchange in a shell and tube rod heat exchanger with a horizontal insulating wall is on average 20% higher and
Fig. 1. Diagram of the bearing-bushing heat exchanger: 1-4) connection; 5) body of
heat exchanger; 6) heat-exchange tubes; 7) bearing bushings; 8) plates with turbo
elements; 9) horizontal wall.