A large chemical plant chooses multiple domestically produced Jingchuan micro flow mass flow meters

The global market sales of industrial quality flow meters reached billions of dollars in 2021, and are expected to reach billions of dollars by 2028, with a compound annual growth rate (CAGR) of% (2022-2028). The Chinese market has undergone rapid changes in the past few years, with a market size of one million US dollars in 2021, accounting for approximately% of the global market. It is expected to reach one million US dollars by 2028, and the global market share will reach%. In terms of consumption, the current region is the global consumer market, followed by and, which respectively account for% and%. It is expected that the region will experience the fastest growth in the coming years, with a CAGR of approximately% from 2022 to 2028.

The application of Coriolis mass flowmeter in fine chemical production is becoming increasingly widespread. As one of the three types of high-precision flowmeters, its advantages are gradually emerging. The author briefly introduces the technical principles and characteristics of the Coriolis force mass flowmeter, and discusses its application in fine chemical production through practical examples.

1. Basic principles and main characteristics
The basic principle of a Coriolis force mass flowmeter is: a thin-walled measuring tube with fixed ends is excited at the resonance or near resonance frequency (or its higher harmonic frequency) of the measuring tube at the midpoint. At this time, the fluid flowing inside the tube generates Coriolis force, causing opposite deflection in the direction of the midpoint of the measuring tube. The magnitude of deflection is proportional to the mass flow rate of the fluid. Therefore, by using optical or electromagnetic methods to detect the deflection of the measuring tube, the mass flow rate of the fluid inside the tube can be obtained.
　　Coriolis mass flowmeterThe main characteristics are: ① Directly measuring mass flow rate with high measurement accuracy; ② The measured value is not affected by fluid characteristics such as density and viscosity; ③ Can measure various non Newtonian fluids and slurries containing particles; ④ Can be used for multi parameter measurement, such as temperature, density, etc.

Discussion on the Application of 2 in Fine Chemical Production
The main product of a certain chemical company is carbamate pesticides. In the production of such pesticides, phosgene production is an extremely important link, and the concentration and stability of phosgene play a crucial role in the synthesis of carbamate. The production process of phosgene is as follows: liquid chlorine is converted into gaseous chlorine through a vaporizer, and chlorine gas and carbon monoxide gas enter the mixer in proportion. The mixed gas passes through the first and second reactors under the action of a catalyst to generate phosgene. During this process, it is crucial to control the ratio of chlorine gas to carbon monoxide gas entering the mixer in order to improve the quality of phosgene production. To solve this problem, a pesticide company under a certain chemical company adopted ratio control in the DCS renovation of this section in May 2007.
Here, the flow rate of chlorine gas is used to control the flow rate of carbon monoxide. First, use the pressure sensor on the mixerControl the regulating valve PV-201 on the chlorine gas pipeline to regulate the flow of chlorine gas to ensure the normal pressure of the mixer; Then input the appropriate ratio into the comparator, which will be based on the chlorine gas flow meterAnd carbon monoxide flowmeterAutomatically adjust the opening of control valve FV-202 to regulate the flow rate of chlorine gas and carbon monoxide into the mixer according to the set ratioThe above adjustment plan is theoretically correct, but based on the author's observation and feedback from on-site process personnel after the device is started, the actual situation is not ideal. Before the ratio control, the phosgene content was around 62% (relying on on-site workers to manually adjust the glass rotor flowmeter valve). After using ratio control, the content fluctuated between 60% and 75%, and the phosgene concentration was very unstable, causing significant difficulties for the subsequent acyl chloride synthesis process. Therefore, after more than three months of use, this ratio control system was abandoned and the operators reverted back to manual operation as before.

A large chemical plant chooses multiple domestically produced Jingchuan micro flow mass flow meters. Business introduction:The customer is a chemical enterprise in Beijing. They have video cases online about the application of Jingchuan JCMF micro mass flow meters with diameters of DN1-DN8 in various industries. They would like to have a deeper understanding of the accuracy and operating requirements of micro mass flow meters. The customer's site mainly measures the small flow rates of gases and liquids. After communicating with our technical team, we recommend using micro mass flow meters with diameters of DN1 and DN3, with an accuracy of 0.5 and a pressure resistance of 4.0MPA on site. The connection method can be customized according to customer requirements. After a period of on-site feedback from the customer, the effect has been good and meets the customer's design requirements. Let's go to the site together to take a look!

DN50 mass flowmeter is mainly used for measuring solvent flow rate in chemical plants

Installation site of DN1MM gas mass flowmeter

Miniature mass flowmeter with a starting weight of 0.5KG for measuring high temperature and high pressure resistance

The data of DN3MM Coriolis mass flowmeter is stable