Vertical multitubular heat exchanger and distillation column...

Details Vertical multitubular heat exchanger and distillation column... Vertical multitubular heat exchanger and distillation column...

2004-08-17

2008-12-09

Manoharan, Virginia (Department: 1797)

Distillation: apparatus

Apparatus

Types

C159S027100, C165S147000, C165S158000, C165S160000, C165S170000, C165S183000, C202S262000

Reexamination Certificate

active

07462262

ABSTRACT:
A vertical multitubular heat exchanger that can prevent clogging of a polymerized material and is continuously operable for an extended period of time is provided. The vertical multitubular heat exchanger (1) of the present invention introduces a process fluid containing an easily-polymerizable substance into heat exchanger tubes (28) to perform heat exchange. The vertical multitubular heat exchanger (1) includes a shell (2) extending in a vertical direction, an upper tube sheet (8) and a lower tube sheet (10) respectively disposed at the upper portion (4) and the lower portion (6) of the shell (2), and a plurality of heat exchanger tubes (28) whose outer circumferences (26) of both ends are respectively fixed to the upper tube sheet (8) and the lower tube sheet (10). An upper surface (34) of the upper tube sheet (8) is formed to be sloped and at least one of the heat exchanger tubes (28) is disposed in the vicinity of the lowest position of the upper surface (34) of the upper tube sheet (8).

REFERENCES:
patent: 946238 (1910-01-01), Loomis
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patent: 6620969 (2003-09-01), Nishimura et al.
patent: 1273356 (2000-11-01), None
patent: 1 034 824 (2000-09-01), None
patent: 56-141827 (1981-11-01), None
patent: 59-183297 (1984-10-01), None
patent: 63-32297 (1988-02-01), None

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