SU1242700A1 - Shell-and-tube heat exchanger - Google Patents

Description

The invention relates to heat exchangers and can be used in chemical and petrochemical engineering to create apparatus for condensing vapor-gas mixtures and heating liquids.

The purpose of the invention is the intensification of heat transfer in the process of condensation of two steam streams.

FIG. 1 shows a heat exchanger in longitudinal section in FIG. 2 shows section A-A in FIG. one.

The shell-and-tube heat exchanger contains a bundle of tubes 2 enclosed in a hexagon shell 1, included in the cooling circuit and fixed in tube plates 3, and a longitudinal partition 4 in the annular space connected to the shell 5. The partition 4 within shell 1 is made in the form of a tubular membrane connected to shell 1 and included in the cooling circuit. The casing 5 is equipped with nozzles 6 and 7 for the supply of the vapor-gas mixture, nozzles 8 and 9 for supplying steam and for withdrawing non-condensed gases, nozzles 10 and 11 for the inlet and outlet of the tubular space, as well as

five

0

five

nozzles 12 and 13 for condensate drainage.

Between the casing 5 and the shell 1 are installed solid vertical partitions 14, which are laterally attached to the shell 1, to the outer pipes 2 and to the casing 5, and their ends to the tube boards 3.

The heat exchanger operates as follows.

The vapor – gas mixture is fed into the shell space through pipe 6, and secondary steam through pipe 8, which condenses upward on the surfaces of pipes 2, transfers heat to the coolant flowing through pipes 2. Noncondensed gases are discharged through pipes 7 and 9, and condensate — through pipes 12 and 13. Through pipe 10 into the tubes 2 of the beam and into the tubular membrane, coolant is supplied, which is drained by the film inside the tubes 2 and heated. The fluid moving along the tubes of the membrane 2 is heated on one side steam, and on the other hand, a steam – gas mixture, and there is no heat exchange between the two heat carriers.

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Editor G. Volkova

Compiled by V. Baranets Tehred M. Morgental

Order 3686/35 Circulation 589

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Design, 4.

Proofreader S. Cherni

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Claims (1)

CASED TUBE HEAT EXCHANGER containing a bundle of pipes enclosed in a multifaceted shell, included in a cooling circuit and fixed in pipe boards, and a longitudinal partition in the annulus connected to the casing, characterized in that, in order to intensify heat transfer in the process of condensation of two steam flows, the longitudinal partition within the shell is made in the form of a tubular membrane attached to the shell and included in the cooling circuit.