Concentrated sulfuric acid dilution automatic control production line

Abstract

The invention discloses a concentrated sulfuric acid dilution automatic control production line. The production line comprises a concentrated sulfuric acid storage tank 20, a DI water storage pot 27, an acid mixer 13 and a dilute sulfuric acid storage tank 45 and the above parts are controlled by a PLC control system device 1 and are connected by pipes. The concentrated sulfuric acid dilution automatic control production line also comprises an exhausting system 18 and a protection device. Upper and lower ends of the acid mixer 13 are connected to an acid mist condenser 30. A concentrated sulfuric acid blending nozzle 14, a concentrated sulfuric acid blending hand-operated valve 15, a concentrated sulfuric acid flowmeter 16 and a concentrated sulfuric acid blending electric regulating valve 19 are used for communication and control of the acid mixer 13 and the concentrated sulfuric acid storage tank 20 and are located between the acid mixer 13 and the concentrated sulfuric acid storage tank 20. A DI water blending nozzle 33, a concentrated sulfuric acid blending hand-operated valve 15, a DI water flowmeter 16 and a DI water blending electric regulating valve 23 are used for communication and control of the acid mixer 13 and the DI water storage pot 27 and are located between the acid mixer 13 and the DI water storage pot 27. A high temperature cooling pipe 36, a middle temperature cooler 8 and an intelligent temperature-acidity measuring instrument 38 are used for communication and control of the acid mixer 13 and the dilute sulfuric acid storage tank 45 and are located between the acid mixer 13 and the dilute sulfuric acid storage tank 45.

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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