Automatic concentrated sulfuric acid dehydrating tower

Abstract

The invention discloses an automatic concentrated sulfuric acid dehydrating tower. The automatic concentrated sulfuric acid dehydrating tower comprises a cylindrical tower body; a top cover is fixed at the top of the tower body; an air inlet is formed in the top cover; the air inlet is connected with outside air through an elbow; one end of the elbow is fixed at the top of the tower body; the elbow is used for inputting the air into the tower body; an acid inlet is formed in the tower body; the acid inlet is connected with an acid inlet pipe; one end of the acid inlet pipe is fixed at the bottom of the tower body; the other end of the acid inlet pipe is connected to a concentrated sulfuric acid storage tank body; an acid outlet is formed in the side wall of the tower body; the acid outletis connected with an acid outlet pipe; one end of the acid outlet pipe is fixed to the acid outlet, the other end of the acid outlet pipe is connected to the concentrated sulfuric acid storage tank body, a baffle is fixed to the middle of the top in the tower body and extends downwards in the height direction of the tower body, a filter plate is fixed in the tower body, the filter plate is horizontally arranged and located under a dehydration pipe, and a plurality of protruding plates are evenly distributed on the inner wall of the tower body. The concentrated sulfuric acid dehydration efficiency is improved, full-automatic acid adding is achieved, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a concentrated sulfuric acid automatic dehydration tower. Background technique [0002] Concentrated sulfuric acid refers to an aqueous solution of pure H2SO4 with a mass fraction greater than or equal to 70%. It is a conventional chemical raw material. Since concentrated sulfuric acid contains a large number of unionized sulfuric acid molecules (acid molecules in a strong acid solution may not all be ionized into ions, and the strength of the acid is relative), the concentrated sulfuric acid has water absorption and dehydration properties. , especially strong water absorption, can be mixed with water in any proportion, and emit a large amount of dilution heat. In chemical production, in order to balance the air pressure in the tank with the outside air pressure in the tank for storing concentrated sulfuric acid, the tank is usually connected to the outside air, and th...

AI Technical Summary

Problems solved by technology

In chemical production, in order to keep the air pressure in the tank in balance with the outside air pressure in the tank for storing concentrated sulfuric acid, the tank is usually connected to the outside air, and this operation will cause water vapor in the air to enter the tank. Concentrated sulfuric acid has strong water absorption, which leads to the dilution of concentrated sulfuric acid. In order to prevent the concentrated sulfuric acid from being diluted, a dehydration device is usually connected to the concentrated sulfuric acid tank, and the water vapor in the air is dehydrated through the dehydration device. The principle is in A certain amount of concentrated sulfuric acid is added to the dehydration device, and the water vapor in the air is absorbed and diluted by the concentrated sulfuric acid, and the diluted concentrated sulfuric acid is directly circulated and transported to the tank for storing concentrated sulfuric acid, because this part of the diluted concentrated sulfuric acid is important for As far as the concentrated sulfuric acid in the overall tank is concerned, it is negligible, but this dehydration device also has problems. For example, the manual acid addition process not only increases the risk of the operator, but also causes a sudden increase in air volume in the dehydration device, thereby forming acid mist, eventually Cause sulfuric acid to deteriorate or corrode the dehydration device

Images