The Electric Control System Of Dinitrochlorobenzene Production Line Based On PLC

Dinitrochlorobenzene (DNCB) is the important medium body of medicine, agrochemical and dyestuff and the saccharin. With the fast development of medicine, agrochemical and dyestuff industry in our country, the use of these kinds of products continuously expands, and the demand for DNCB continuously rises, so currently the products supply falls short of demand. Because the production of DNCB needs a nitration whose safety is the keystone of the whole production, so the main goal of this article is to introduce how to realize the safe production through electronic control. This article illustrates how to exactly monitor the nitration in the aspects of the volume of materials, the temperature in the reaction and the flow of materials, so as to realize automatic production as well as the safety and stability of nitration.This article introduces the basic principle, danger and safety measures of nitration , as well as the production line of DNCB in industry. In order to realize automatic production and save labor cost, this article suggests to use the hysteresis stretch and shrink liquid sensor to set exactly quantity of materials; exactly control the temperature of the nitric machine through averaging the measurement of temperature sensors; use opening degree valve to control the flow; use the rotate speed monitoring sensor to exactly monitor the rotate speed of electronic machine; use electronic machine and valve catenation to guarantee the safety of charge.This article makes use of kingview software to monitor the production on spot, which fully reveals the advantage of advanced automatic technique. The communication between the main controller S7-300 and kingview software realizes the rapid data exchange between management and the site. Connecting workshop office and main controller office through LDN realize the fast reaction of information.The innovation of this article is adopting a safe and advanced control system to realize the automatic control of nitration, so as to save cost, improve the quality and lower the labor intensity.