On-line monitoring device for circulating mother liquor in the production of potassium nitrate by double decomposition cycle method

Abstract

The invention discloses an on-line monitoring device for circulating mother liquor produced by a metathesis cycle method. The inner cavity of the floating chamber is provided with a buffer liquid storage chamber and a detection chamber connected through a filter. The buffer liquid storage chamber sucks the mother liquor through a micropump to detect After the completion, the detection chamber discharges the mother liquor through the liquid outlet; the detection chamber is equipped with a detection sensing element group for the circulating mother liquor; the detection sensing element communicates with the PLC control system to transmit the detection data, and the PLC control system communicates with the display to display the detection results. It is convenient for the staff to obtain various data of the solution in an instant, objective and intuitive way, so as to adjust the type and quantity of the material input, and provide a data basis for the smooth progress of the next process; the detection data is true and reliable; the data deviation is small, and the data measurement speed is fast; multiple The tests are performed simultaneously.

Description

technical field [0001] The invention relates to a potassium nitrate production equipment adopting double decomposition circulation method, in particular to equipment for online monitoring of circulating mother liquor. Background technique [0002] Due to the low price of raw materials and the high potassium content of the finished product potassium nitrate, the double decomposition cycle process has been widely adopted by domestic potassium nitrate production enterprises. The process characteristics of the double decomposition cycle method determine that it does not discharge production water, but the circulating mother liquor that exists in large quantities is still a vital part of the process production. According to the type and content level of the ingredients in the mother liquor, the technicians put in different materials in a targeted manner to produce different types of products. When determining the content of each component in the circulating mother liquor and the...

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Problems solved by technology

When determining the content of each component in the circulating mother liquor and the characteristics of the solution in the traditional process, thermometers, concentration meters and various testing instruments are often used. Operators frequently go to the reactor site to measure solution parameters such as the concentration, density, and temperature of the material liquid, which is inevitable. It leads to some problems: First, the reading of manual inspection data varies from person to person. Due to the time difference and the difference in the personal technical quality of the operator, the production parameters are unstable, and deviations are easy to occur, resulting in unstable product quality, which directly affects product quality. ;Secondly, when manually extracting the solution for detection, it is easy to be splashed or even burned by high-temperature liquid, and there is a certain operational risk; finally, manual detection needs to detect a variety of items, and the detection cycle is long, which is not conducive to smooth production

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