Atmospheric distillation apparatus overhead oil gas heat exchanger and heat exchange method

摘要

Disclosed is an overhead oil gas heat exchanger and a heat exchanging method of an atmospheric distillation apparatus. The heat exchanging apparatus includes a heat exchanger housing (11), an upper tube plate (16), a lower tube plate (17), and a heat transfer tube (5), and at the bottom of the housing (11) The pipe passage outlet (18) is provided at the top of the housing (11). A casing passage inlet (12) connected to an atmospheric distillation apparatus overhead oil gas pipe (2) is provided at the top of the casing (11), and at the bottom of the casing (11), a casing passage outlet Wherein the annular water filling pipe has a plurality of water holes communicating with the interior of the housing, and a plurality of water holes communicating with the inside of the housing, (61) is provided. The overhead oil gas pipe (2) of the atmospheric distillation apparatus is connected to the external water injection pipe (3) via the first water injection pipe (31) and the third water injection pipe (33). The first solenoid valve (34) and the second solenoid valve (35) are provided in the first water injection pipe (31) and the third water injection pipe (33), respectively, and the annular water injection pipe (6) is connected to the second water injection pipe ) To the external water injection pipe (3). In the heat exchanging device of the present invention, the first and second water injection are continuously injected into the housing passage at a constant rate, the third water injection intermittently injects a large quantity into the housing passage, and the housing passage Rinse the deposits inside, to prevent clogging and corrosion of the heat exchanger.