Falling film head improved structure of falling film reboiler

Abstract

The invention relates to a falling film head improved structure of a falling film reboiler. The falling film head improved structure of the falling film reboiler comprises a cylinder body, a tube plate and a sealing head; a first tube nest is fixed on the upper part of the tube plate through a screw fixing structure; a second tube nest is fixed above the first tube sheet through a connecting plate; the first tube nest, the second tube nest and the tube plate are parallel; small holes of the first tube nest are opposite to the hole bridges of the tube plate; small holes of the second tube nestare opposite to holes of the tube plate; the top end of the sealing head is provided with a feeding flange; the end part, extending inside the sealing head, of the feeding flange is provided with a feeding baffle; and small holes are uniformly distributed in the feeding baffle. According to the falling film head improved structure of the falling film reboiler, an original falling film head is improved to have distribution of two-stage screen plates, and is arranged to have an arc material stopping mechanism, so that the feeding distribution is more uniform; and with the distribution of two-stage screen plates, impulsive force to the tube plate is reduced, the feeding distribution is further uniform, and the phenomena of inner-wall material accumulation and pipe blocking of heat exchange pipes are reduced.

Description

technical field [0001] The invention relates to the field of falling film reboilers, in particular to an improved falling film head structure of the falling film reboiler. Background technique [0002] Such as figure 2 In the falling film reboiler shown, the feed inlet on the falling film head extends into the cylinder, and a flower plate is used. In actual use, the inner wall of the heat exchange tube in the tube side is prone to material accumulation, resulting in tube blockage Phenomenon, seriously affect the use. Contents of the invention [0003] The invention provides an improved structure of the falling film head of the falling film reboiler. The original falling film head is improved, and the distribution of the secondary sieve plates is changed. The distribution is more uniform, and the distribution of the secondary sieve plate reduces the impact on the tube sheet, further makes the distribution of the feed evenly, and reduces the accumulation of material on the...

AI Technical Summary

Problems solved by technology

[0002] like figure 2 In the falling film reboiler shown, the feed inlet on the falling film head extends into the barrel, and a flower plate is used. In actual use, the inner wall of the heat exchange tube in the tube side is prone to material accumulation, resulting in tube blockage Phenomenon that seriously affects the use of

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