Solutions for the Petrochemical Industry

The demand for refined production in the petrochemical industry is constantly increasing, and process control is becoming increasingly important. As the main instrument for process control, the stability, accuracy, and reliability of flow meters have become the main factors considered by petrochemical enterprises in the face of complex and ever-changing production processes.

In process control, flow meters are mainly used to measure the flow of process media, output (4-20) mA standard current signals, and upload them to DCS or PLC control systems.

There are various types of tested media, including steam, water, various acids, alkalis, salt solutions, organic solvents, etc; The physical and chemical properties of the medium also vary; The on-site working environment can vary from high temperature, high pressure, flammability, to explosiveness. The correct measurement of flow rate is an important means of production process control, playing an important role in ensuring quality, improving production efficiency, and ensuring production safety. This determines that the selection of on-site flow instruments is crucial.

    【Solution】

In the process of selecting flow instruments, based on production requirements and actual situations, the safety, accuracy, and economy of measurement are comprehensively considered, and the type and specifications of flow instruments are determined based on the properties and flow conditions of the measured medium.

Grasp two basic principles:

1. Ensure stable instrument performance, smooth process, and ensure production safety;

2. Ensure that the instrument accuracy meets the usage requirements;

Determine necessary selection parameters:

1. Determine the name of the medium, its acidity, alkalinity, and corrosiveness;

2. The upper and lower limits of flow during the production process;

3. Determine the upper and lower pressure values, temperature upper and lower limits in the measured medium pipeline;

4. Determine the size and material of the pipeline diameter;

5. Determine the on-site installation environment, power supply and other parameters.

The measurement of steam adopts AOBO-LUGB vortex flowmeter;

AOBO-LD electromagnetic flowmeter is selected for the measurement of conductive liquids;

For the measurement of non-conductive liquids, AOBO-LCT dual channel ultrasonic flowmeter is selected for large caliber; Small diameter rotor flowmeter is selected.

The assessment instruments of each branch or factory, including domestic water, production water, electricity, steam, sewage, and other instruments, are uploaded to the remote meter reading platform of the headquarters through communication for real-time monitoring and management. The GPRS remote meter reading system independently developed and produced by our company is selected.