Chemical Industry Solutions
The application of frequency converters in the chemical industry
The chemical and pharmaceutical industries are currently the largest consumers of electricity within enterprises. China is currently the world's largest developing country, with a dependence on natural resources accounting for over 60%. Energy issues are a serious challenge, and there are two ways to fundamentally solve energy problems: open source and energy conservation. Variable frequency energy-saving technology is an efficient and energy-saving new technology that has a wide range of applications, fast results, and short investment payback period. Currently, it has been widely applied in various industries such as metallurgy, mining, petroleum, chemical, pharmaceutical, textile, machinery, power, building materials, papermaking, printing, water supply, air conditioning, etc.
In the chemical industry, frequency converters are mainly used in fans, pumps, and mechanical speed control equipment. The chemical industry has multiple branches and significant differences in production processes. The power range of frequency converters used is very wide, ranging from less than 1KW to several thousand kilowatts. The following mainly analyzes the advantages and disadvantages of commonly used mixers and centrifuges in chemical production.
1. Mixer (fermentation tank, mixing tank) type load
The agitator type load is also the most common and common load in chemical workshops, with a variety of power specifications. From the selection of frequency converters, choose a constant torque frequency converter with the same power.
2. Centrifuge type load
Centrifugal machinery belongs to high inertia loads with significant speed changes, and generally requires braking units and resistors to achieve rapid parking. The work cycle is a repetitive short-term system, even a control of forward and reverse.
Odeli frequency converters have been applied in numerous chemical plants. Not only does it meet the energy-saving requirements of chemical plants, but it also promotes the optimization of chemical production processes and ensures the safe and stable operation of the production process.
Existing system defects:
The high current during startup has a significant impact on the power grid.
When starting, the mechanical impact is large and the service life is low.
The noise is loud, and corrosive gases corrode electronic components severely.
Poor adjustment accuracy.
High failure rate, long maintenance time, and high cost
Odeli vector frequency converters have industry advantages:
⑴ By adopting frequency conversion control, the maximum energy saving is achieved while meeting the process requirements;
⑵ Implement soft start for the motor, ensuring no impact on the power grid and extending the service life of the machinery;
⑶ The entire series of independent air duct designs, with optional installation inside and outside the radiator cabinet, reduces the accumulation of dust on core components during the fan cooling process. Provided reliability for long-term operation;
The thickening treatment of the three proof paint (dust-proof, moisture-proof, and corrosion-resistant) effectively avoids the corrosion control accuracy, high stability accuracy, and fast dynamic response of gas on the internal components of the frequency converter. Can quickly respond to load changes and external control commands.
Application of Soft Starters in Chemical Engineering
In the chemical industry, there are multiple large capacity molten salt pumps, compressors, as well as large capacity air compressors, such as utility engineering, circulation, desalination water pumps, and refrigerators. In addition, the characteristics of the chemical industry are wide production areas and concentrated production processes, while the transportation and storage areas of electrical equipment, especially various liquid tanks, have very dispersed cost allocation. In addition, according to process requirements, substations are often not close enough to charging centers, resulting in longer distribution distances. Starting the engine directly with a large capacity pump will have an impact on the installed power distribution system. The soft starter can effectively solve the problem of excessive current during full voltage and low voltage startup. It not only ensures the safe and stable start of the motor, but also reduces the impact of the distribution system, protects the motor, and improves the automation of the production process and the stability of the distribution system. Improve the energy quality and mechanical lifespan of electric motors.
