Multifunctional spiral plate dephlegmator and working method thereof

Abstract

The invention relates to a multifunctional spiral plate dephlegmator and a working method thereof. The multifunctional spiral plate dephlegmator comprises a dephlegmator barrel body and a fluid baffle, a cone spiral separating unit, a spiral plate heat exchange device and a fluid collection device which are successively arranged from top to bottom inside the dephlegmator barrel body. The spiral plate heat exchange device is composed of a coil plate 1, a coil plate 2, a connection reinforcing plate, a side blocking plate, an end blocking plate, a circulating water feeding port and a circulatingwater outlet, which together form a spiral circulating water channel and a mixed steam channel communicated with the inner space of the dephlegmator barrel body. Octagonal cloud-shaped bulges are arranged in the circulating water channel, and spiral bulges and octagonal cloud-shaped bulges are disposed in the mixed steam channel. These bulges have functions of self-supporting, turbulence, condensation, fluid collection, etc., thus increasing heat exchange area and improving heat transfer efficiency. Through multiple times of gas-liquid separation, a condensate is captured to a greater extentto prevent the water vapor from being taken away and avoid from affecting the subsequent process.

Description

technical field [0001] The invention relates to a splitter at the top of an ammonia distillation tower, in particular to a multifunctional spiral plate splitter and its working method. Background technique [0002] At present, the ammonia distillation process in the coking industry generally uses a vertical shrinker to condense and cool the mixed steam from the top of the ammonia distillation tower. During this process, the high boiling point components in the mixed steam are condensed into liquid phase, and the low boiling point components are ammonia gas. The ammonia gas is sent to the follow-up unit after being condensed by the ammonia condensing cooler. The heat exchange device in the vertical splitter usually adopts a tube-and-tube heat exchanger. The mixed steam from the top of the ammonia distillation tower goes through the tube side, and the circulating water goes through the shell side. The heat transfer efficiency of the tube-and-tube heat exchanger is relatively ...

AI Technical Summary

Problems solved by technology

The heat transfer efficiency of the tube-and-tube heat exchanger is relatively low, and the mixed steam flows quickly, so it is easy to generate mist entrainment, that is, the condensed water is trapped in the ammonia gas and taken away, and liquid flooding may occur in severe cases

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