Online concentration analyzer, potassium hydroxide device, KOH concentration analyzer

NegotiableUpdate on 12/18

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

MPR E-Scan online concentration analyzer potassium hydroxide device KOH concentration analyzer is an online saltwater concentration analyzer driven by a microcomputer processor. Due to its split design, the instrument CPU and main circuit board are separated from the optical part, making the system more resistant to high temperature and vibration, better stability, more accurate testing, and longer effective service life. It can display the concentration value of the product in real time and transmit it to the system for easy system integration and control.

Product Details

The MPR E-Scan online potassium hydroxide analyzer can be applied to monitor and control the concentration of brine in potassium hydroxide plants. The following is its related introduction:

在线浓度仪氢氧化钾装置KOH浓度分析仪

The 30% potassium hydroxide alkaline solution produced by KOH evaporation electrolysis is partially used for evaporation to produce 48% KOH, and a portion of 48% KOH is used to produce electronic grade 48% KOH. The preparation of 48% KOH solution adopts the three effect falling film evaporation process, which uses negative pressure operation and evaporation temperature of 100 ℃~150 ℃. The 30% KOH solution from the electrolytic cell is mixed with the circulating KOH solution through automatic flow regulation and enters from the top of the three effect evaporator. The KOH solution undergoes falling film evaporation in the evaporator because the feeding temperature is higher than the boiling temperature, and a part of the liquid evaporates, producing water vapor. Water vapor flows downwards along the heat exchange tubes of the evaporator, while liquid flows downwards in a film like manner along the inner walls of the tubes. At the same time, water continuously evaporates from the film, and the liquid KOH gradually becomes concentrated, reaching a concentration of 35%. The concentrated KOH solution enters the three effect circulation pump, with a portion of the KOH solution circulating into the top inlet of the evaporator and another portion entering the second effect evaporator through a liquid level control regulating valve (dual parameter adjustment) from the top for concentration, reaching a concentration of 42%. Then, the 42% liquid KOH from the outlet of the second effect evaporator is transported to the top of the first effect evaporator through the second effect pump and enters the effect body. The KOH solution in the first effect evaporator is concentrated to 48%, and the KOH solution enters the first effect circulation pump. Part of the 48% KOH solution is circulated in the first effect body, while the other 48% KOH solution enters the electronic grade potassium hydroxide production device to produce electronic grade 48% KOH. The remaining 48% KOH solution is cooled by two series connected coolers and heated into the KOH solution at the top of the second and first effect evaporators. The 48% KOH solution discharged from the cooler is sent to the product storage tank in the tank area.

After the electronic grade 48% potassium hydroxide is evaporated from the KOH evaporation process, a portion of the 48% alkaline solution is concentrated to 55% through triple effect falling film evaporation. 55% KOH enters the crystallizer, which is cooled with chilled water. The outlet solution of the crystallizer is kept at around 20 ℃ and discharged to the centrifuge to separate the crystallized crystals from the solution. The crystals enter the low sodium tank, and the solution enters the mother liquor tank. Add a certain amount of product steam condensate or 30% KOH into the low sodium tank, and mix the crystal to dissolve into 48% KOH solution after stirring, which will be sold as electronic grade potassium hydroxide. Add a certain amount of pure water to the mother liquor tank, mix the alkaline solution to 48%, and transport it to the tank area for sale as general industrial grade potassium hydroxide.

working principleBased on critical angle total reflection measurement technology. The light from the LED passes through the prism and undergoes reflection and refraction at the interface between the prism and the saline solution. When the incident angle of the light is greater than the critical angle, the light refracts into the solution, while the light below the critical angle is reflected back to the prism and received by the CCD sensor above the prism. Due to the different refractive indices of saline solutions of different concentrations, the critical angle also changes accordingly. The CCD sensor calculates the concentration value of the saline solution through a microprocessor based on the changes in the brightness and darkness of the received light.
Technical SpecificationsThe measurement range is generally 0.0-350.0g/L, with a resolution of ± 1g/L, a temperature resolution of 0.1 ℃, a working temperature range of -20-150 ℃, a pressure bearing capacity of 2MPa, a protection level of NEMA 4X (IP65), an output signal of 4-20mA, and a concentration measurement accuracy of ± 0.1%.
Instrument FeaturesAdopting a split design, the instrument CPU and main circuit board are separated from the optical part, making the system more resistant to high temperatures and vibrations, improving stability, testing accuracy, and effective service life. At the same time, the analyzer has factory calibration and automatic temperature compensation functions, which can be directly put into use without on-site calibration, improving the convenience of installation and use.
Installation methodThreaded or flange connections can be selected based on the actual pipeline situation, and the sensor can be installed in a suitable position on the saltwater pipeline to ensure that saltwater can flow fully and stably through the sensor measurement area, in order to obtain accurate concentration data. At the same time, an online mechanical brush automatic cleaning device can be equipped to prevent impurities from coating the window inside the pipeline, ensuring measurement accuracy.
Application in Potassium Hydroxide PlantIn the production process of potassium hydroxide, saltwater is an important raw material, and its stable concentration is crucial for subsequent production processes. The MPR E-Scan online saltwater analyzer can be installed at the overflow of the desalination tank or on the saltwater transport pipeline to monitor the saltwater concentration in real time. When the concentration is abnormal, the data can be transmitted to the control system in a timely manner, so that operators can take corresponding measures to ensure that the saltwater concentration is stable within the process requirements, providing a guarantee for the stable production of potassium hydroxide.