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Safety Operating Procedures for Chemical Centrifugal Pumps

Time：2026-01-07 15:45:01 Edit：HuaQuan Traffic Index：70

Chemical centrifugal pumps are commonly used fluid conveying equipment in the chemical process industry. They are not just 'a pump,' but a precision system specially designed for demanding operating conditions.

I. Features of Chemical Centrifugal Pumps
Chemical centrifugal pumps are specifically designed to transport hazardous and corrosive media. Their core features are safety, high resistance to corrosion and wear, and high reliability. They can adapt to complex and harsh conditions such as high temperature, high pressure, and particle-laden fluids, ensuring long-term stable operation of chemical processes.

II. Huaquan Power is a professional chemical centrifugal pump manufacturer in China
Huaquan Power Company was established in 2010, and its business spans multiple fields including power generation equipment, new energy storage equipment, high and low voltage complete sets of equipment, and power engineering. The company has established three major brands: "HQ-POWER," "HUAQUAN," and "Huaquan." Currently, the company has developed into a strong brand in the global power industry, with cumulative global sales exceeding 1 million units.
Huaquan Power, a professional chemical centrifugal pump manufacturer in China, owns modern large-scale production bases and mass production capabilities, ensuring timely product delivery and consistent quality. While ensuring quality, the company also maintains competitive cost control, meeting the bulk supply needs of large projects.
Huaquan Power has established a widely covering rapid response service network, providing full lifecycle services from professional selection support and installation guidance to fast spare parts supply, on-site repairs, and preventive maintenance, ensuring long-term stable operation of customer equipment.

III. Advantages of Chemical Centrifugal Pumps
1. Core Performance Advantages of Chemical Centrifugal Pumps
- Uniform flow and smooth operation: Chemical centrifugal pumps provide continuous, pulsation-free output, causing minimal impact on pipelines and instrumentation systems, which helps maintain process stability.
- High speed and large flow: Can be directly connected to motors, offering high rotational speeds and a wide flow range for a single unit.
- Simple structure and easy operation and maintenance: Compared with reciprocating pumps and rotary pumps, the structure is relatively simple and compact, making startup and shutdown operations easy and subsequent maintenance convenient.
2. Safety and Reliability Advantages
- Excellent sealing safety: Chemical centrifugal pumps use high-performance mechanical seals or completely leak-free magnetic drive, safely transporting toxic, hazardous, flammable, explosive, and highly corrosive media, meeting strict environmental and safety standards.
3. Adaptability and Economic Advantages
- Strong adaptability to working conditions: Chemical centrifugal pumps, through special designs, can transport high-temperature, low-temperature, highly cavitating media, and media containing moderate solid particles. They can be fitted with heating/cooling jackets, inducer wheels, open impellers, etc., to adapt to complex conditions.
- Excellent overall economic performance:
- Initial investment: Typically more cost-effective than volumetric pumps at medium flow and head.
- Operating costs: Chemical centrifugal pumps offer high efficiency, relatively low maintenance costs, and high standardization of spare parts.
- Footprint: Compact structure with a small footprint.

IV. Safety Operating Procedures for Chemical Centrifugal Pumps
1. Precautions Before Starting the Chemical Centrifugal Pump
Confirm the process: Fully open the inlet valve, close or slightly open the outlet valve; ensure the flow path is unobstructed, the pump casing is filled with liquid, and air is vented.
Confirm the equipment: Manually rotate the pump 2-3 turns to ensure smooth rotation without obstruction; check that the centrifugal pump’s anchor bolts and protective cover are secured; verify the bearing oil level is normal.
Confirm safety: Ensure the seal flush/cooling system is functioning properly; wear personal protective equipment.
2. Precautions During Start-up and Operation of the Chemical Centrifugal Pump
Start-up: Jog the motor to confirm the correct rotation direction before fully starting the motor.
Pressurization: After the pump reaches full speed, slowly open the outlet valve to achieve the required pressure and flow.
Monitoring:
- Visual: Check if pressure and current are normal; check if seal leakage exceeds limits.
- Auditory: Listen for abnormal vibration or cavitation noise.
- Tactile: Check if the bearing temperature ≤70℃ and if the motor is overheating.
Prohibitions: Strictly prohibit running the pump dry, adjusting flow with the inlet valve, or performing maintenance while running.
3. Precautions for Stopping the Chemical Centrifugal Pump
Normal shutdown: Slowly close the outlet valve → stop the motor → close the inlet valve.
Emergency shutdown: In case of severe leakage, intense vibration, abnormal noise, motor smoke, or severe overcurrent, immediately press the emergency stop, close the pump outlet valve, and report for handling.
Core principles: Vent the pump before starting, close valves on start-up, strictly prevent dry running and cavitation, and monitor the operation frequently.

V. Q&A on Knowledge Related to Chemical Centrifugal Pumps
1. What are the important parameters when selecting a chemical centrifugal pump?
Flow rate, head, and medium characteristics (corrosiveness, viscosity, solids content, etc.).
2. Why should a chemical centrifugal pump be rotated manually before starting?
To check if the pump shaft is bent, if the impeller is stuck, and if the bearings are functioning properly, preventing faulty startup.
3. How should a chemical centrifugal pump that has been out of service for a long time be maintained?
Drain the medium, clean it thoroughly, rotate it manually periodically, inject anti-rust liquid if necessary, and close all valves.
4. What are common causes of insufficient flow in chemical centrifugal pumps?
Clogged inlet, impeller wear, cavitation, insufficient speed, or air ingress.

VI. Application Areas of Chemical Centrifugal Pumps
1. Petrochemical Industry: Used to transport crude oil, refined oil, solvents, and highly corrosive acids and alkalis; it is the lifeline of refineries and chemical plants.
2. Basic Chemicals: Chemical centrifugal pumps transport various inorganic acids, alkalis, salt solutions, and organic solvents used as basic chemical raw materials.
3. Pharmaceutical and Food Industry: Used to transport medicinal solutions, purified water, culture media, and food ingredients, requiring sterilization, hygiene, and easy cleaning.
4. Environmental Water Treatment: Chemical centrifugal pumps transport wastewater, sludge, flocculants, and desulfurization and denitrification slurries, requiring wear and corrosion resistance.
5. Metallurgy and Power Generation: Used to transport electrolytes, mineral slurries, boiler feed water, and flue gas scrubbing liquids.
6. New Energy and New Materials: Chemical centrifugal pumps transport lithium battery electrolytes, chemicals used in photovoltaic silicon material production, and other related substances.

Chemical centrifugal pumps are crucial equipment in chemical production. Users should select the appropriate chemical centrifugal pump based on specific operational requirements.
More information about Chemical centrifugal pump: http://www.soufadianji.com/