Enamel flat-bottom concentration reaction vessel

Abstract

The invention relates to a concentration reaction vessel used for producing arylamine and edible potassium iodide by reagent concentration and an iron powder reduction method, and particularly relates to an enamel flat-bottom concentration reaction vessel. The enamel flat-bottom concentration reaction vessel is characterized in that: a reaction vessel cover is a basin-head cover; a stirring shaft is disposed at the center of the reaction vessel; a rake-type main paddle is disposed at the bottom of the stirring shaft; the rake-type main paddle is higher near the stirring shaft and lower at the end; an auxiliary stirring paddle is disposed above the rake-type main paddle; the auxiliary stirring paddle is coaxial with the rake-type main paddle; a discharge hole is located at a side of the vessel; the inner surface of a bottom cover of the reaction vessel is flat and made of enamel; the inner wall of the reaction vessel cover is made of enamel; the stirring shaft and the paddles are made of enamel; the reaction vessel bottom is flat; the bottom surface of the rake-type main paddle is parallel to the reaction vessel bottom. The invention can improve the dispersion and reaction speeds of iron powder, and can solve the problem of difficult material discharging.

Description

[0001] technical field [0002] The invention relates to a concentration reaction kettle used for producing aromatic amine and edible potassium iodide by reagent concentration and iron powder reduction method, in particular to an enamel flat-bottom concentration reaction kettle. . Background technique [0003] Concentration of Chemical Reagents [0004] In the production of metal salts of chemical reagents and non-oxidizing acids, because the concentrated solution will cause severe corrosion to carbon steel or stainless steel, it is usually concentrated with a basin head bottom enamel reaction kettle, such as a sodium chloride concentration kettle. Because sodium chloride has the characteristics that the solubility of sodium chloride changes less with temperature, the acidic sodium chloride solution after removing impurities in actual production, in order to ensure a higher yield in the concentration process, it is often necessary to concentrate the sodium chloride solution...

AI Technical Summary

Problems solved by technology

[0012] Iron powder reduction (or synthesis) reaction kettles for the above two types of products, because the reaction liquid will cause serious corrosion to carbon steel or stainless steel, so the pot head bottom enamel reaction kettle is usually used. During the reduction (or synthesis) process, the iron powder sinks to the bottom of the kettle. , the traditional enamel stirring can not make it well dispersed, resulting in the disadvantages of high consumption of iron powder, slow reaction speed, etc., and there is a hidden danger of overflowing the pot

[0013] In the traditional enamel reaction kettle, the outlet is in the center of the bottom of the kettle, and the bottom is in the shape of a basin head to facilitate the discharge. This structure has the problems of stirring and insufficient reaction for the above reactions.

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