Finished product separator of molten alkali

Abstract

The invention discloses a finished product separator of molten alkali, relating to the industrial technical field of caustic soda or sodium hydroxide. A structural design that a guide component is arranged below a falling film tube interface is adopted, the guide component can directly guide the molten alkali, which flows out of the falling film tube interface, into an alkali discharge hole, and then the molten alkali can stably flows to the alkali discharge hole; meanwhile, a base plate is arranged below the guide component, then alkali steam, which is ejected from the falling film tube interface, is prevented from directly scouring downwards, so that erosion corrosion to a first barrel is effectively reduced through the combination of the guide component and the base plate, the service life cycle of the first barrel is prolonged, and production and maintenance costs are lowered. Meanwhile, a second barrel and the falling film tube interface are respectively distributed towards two ends of the axial direction of the first barrel, so that the retention time of alkali steam in the internal cavities of the first barrel and the second barrel is effectively increased, the discharge velocity of the alkali steam is reduced, and the finished product separator of the of molten alkali has the characteristics of simple structure, reasonable layout, safety, reliability and sufficient separation.

Description

technical field [0001] The invention relates to the technical field of caustic soda or solid soda industry, in particular to a separator for molten soda finished products. Background technique [0002] In the lye evaporation process of the solid alkali industry, 32% of the raw material alkali is transported to the second-effect falling film evaporator through the raw material alkali pump, and the concentration is raised to 47%, and then preheated by the 47% alkali pump and the first-effect condensate water The concentration is raised to 61% from the first-effect falling film evaporator, and then transported to the final concentrator by the concentrated alkali pump, and evenly enters each falling film tube, and the alkali solution is pulled into a uniform liquid film by the high-speed steam during the descending process And heat exchange with high-temperature molten salt, dehydration into molten alkali, the molten alkali then enters the finished product separator, and the sep...

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Problems solved by technology

[0003] Among them, the finished product separator plays a role in separating molten alkali and superheated steam. However, the finished product separator in the prior art has: 1) The filtration of superheated steam is not thorough, and the discharge or passing flow rate of superheated steam is too fast, which is easy to mix or carry A small amount of lye is discharged, thereby causing waste of lye, and at the same time, the discharged lye will also pollute the environment; 2) The high-temperature molten alkali flowing in from the falling film tube easily scours the inner wall of the finished product separator, thereby making the finished product The separator is easy to cause rapid corrosion, and its equipment life cycle is short, which leads to high production and maintenance costs

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