A concentrated sulfuric acid dilution automatic control production line

Abstract

The invention discloses an automatic control production line for concentrated sulfuric acid dilution, which includes a concentrated sulfuric acid storage tank 20, a DI water storage tank 27, an acid mixer 13, and a dilute sulfuric acid storage tank 45 controlled by a PLC control system device 1 and connected through pipelines The concentrated sulfuric acid dilution automatic control production line also includes an exhaust system 18 and protective equipment; the upper and lower ends of the acid mixer 13 are connected to the acid mist condenser 30, and the concentrated sulfuric acid batching nozzle 14 and concentrated sulfuric acid are passed between the acid mixer 13 and the concentrated sulfuric acid storage tank 20. Batching manual valve 15, concentrated sulfuric acid flowmeter 16, concentrated sulfuric acid batching electric control valve 19 to carry out communication control; between the acid mixer 13 and DI water storage tank 27 through DI water batching nozzle 33, concentrated sulfuric acid batching manual valve 15, DI water Flow meter 16, DI water batching electric control valve 23 for communication control; acid mixer 13 and dilute sulfuric acid storage tank 45 are connected and controlled through high temperature cooling pipe 36, medium temperature cooler 8, and intelligent temperature acidity measuring instrument 38.

Description

technical field [0001] The invention relates to the technical field of chemical automatic control production lines, in particular to an automatic control production line for concentrated sulfuric acid dilution. Background technique [0002] In the chemical industry, sulfuric acid is one of the important products in the basic chemical industry. Its application scope is expanding day by day, and its demand is increasing. It is an important industrial raw material, and it is also widely used in industry, agriculture, national defense, medicine and other areas of the national economy such as daily life. Sulfuric acid is the most active binary inorganic strong acid, which is highly corrosive and oxidizing. High-concentration sulfuric acid has strong water absorption. When mixed with water, it will release a lot of heat energy. Serious safety accidents will occur. In addition, 98% concentrated sulfuric acid is usually sold on the market, but low-concentration sulfuric acid is ge...

AI Technical Summary

Problems solved by technology

Traditional manual dilution generally has disadvantages such as low efficiency, high risk, low preparation precision, and high labor intensity. Therefore, in the chemical industry, it is imminent to implement automation for high-risk operations such as sulfuric acid dilution.

With the rapid development of modern science and technology, and the wide application of computer network technology and PLC control technology, automatic control of sulfuric acid dilution can be realized, but the design of the existing concentrated sulfuric acid dilution production line is traditionally old, the degree of automation is low, and the dilution concentration Difficult to carry out, low precision, slow cooling speed, average anti-corrosion performance of the production line, low safety protection performance, high cost, difficult to work continuously, cumbersome and complicated operation, unsafe and reliable work, and low dilution efficiency

Moreover, most of the concentrated sulfuric acid dilution production lines on the market now use graphite materials to make condensers, which is expensive and expensive, and graphite will oxidize, which will affect the service life of equipment and the quality of sulfuric acid products

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