Single-effect evaporator

Abstract

The invention relates to a single-effect evaporator. The technical proposal is that the single-effect evaporator comprises a tube pass and a shell pass. A cylinder body of the tube pass, a sealing end of the tube pass and an upper cover of the tube pass constitute the tube pass, an alkaline liquid outlet, an anti-swirl baffle, a meter inserting tube, a liquid level meter inserting tube, a steam outlet and a liquid level meter alarm port are arranged on the tube pass, a wire mesh demister and a baffle are arranged in the tube pass; an expansion joint which is sleeved with a protective cover of the expansion joint and a protective support connects the upper and the lower cylinder bodies of the shell pass, and the two ends of a short joint of the shell pass are connected with the upper cylinder body of the shell pass and the sealing end of the shell pass; the sealing end of the shell pass is provided with an alkaline liquid inlet; the short joint of the shell pass is provided with a distributing cover, a receiving plate, a distributing plate and a downcomer; the steam inlet is connected with the lower cylinder body of the shell pass through a shell body and the annular plate; the lower cylinder body of the shell pass is provided with a condensate outlet; a tube supporting frame is arranged in the lower cylinder body of the shell pass; the short joint of the tube pass is connected with the lower cylinder body of the shell pass; a tube plate is provided with a heat exchange tube hole, a heat exchange tube penetrates the two ends of the tube supporting frame to be connected with the tube plate, and one end thereof is connected with a distributing tube. The single-effect evaporator improves the stability and the pull-out force of the heat exchange tube and reduces the energy consumption and the production cost.

Description

Technical field: [0001] The invention relates to a one-effect evaporator device used for circulation heating of lye, especially a one-effect evaporator device for realizing transformation of low-temperature and low-concentration lye into high-temperature and high-concentration lye. Background technique: [0002] Prior to this, the first-effect evaporator was mainly imported from abroad, with high cost and short equipment life; the heat exchange tube was fixed inside the shell only by the tube-side tube plate and the shell-side tube plate, and there was no fixing bracket for the heat exchange tube, so the fixation was not firm The connection between the heat exchange tube and the tube sheet is strength welding, and the pull-off force is low; the material flow distribution in the tube side of the equipment is uneven, resulting in insufficient heating of the material, large energy consumption, low actual productivity, and high production cost. Invention content: [0003] In o...

AI Technical Summary

Problems solved by technology

[0002] Prior to this, the first-effect evaporator was mainly imported from abroad, with high cost and short equipment life; the heat exchange tube was fixed inside the shell only by the tube-side tube plate and the shell-side tube plate, and there was no fixing bracket for the heat exchange tube, so the fixation was not firm ;The connection between the heat exchange tube and the tube sheet is strength welding, and the pull-off force is low; the material flow distribution in the tube side of the equipment is uneven, resulting in insufficient heating of the material, large energy consumption, low actual productivity, and high production cost

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