In fine chemical production, the safe and efficient transfer of acids, alkalis, and process media defines the reliability of the manufacturing line. When a fine chemical plant in Belgium needed pumping equipment for 31% hydrochloric acid, 32% sodium hydroxide, corn oil, and large-volume process water, no single pump type could cover every medium. ChangYu Pump supplied a combined configuration of IH stainless steel centrifugal pumps and IHF fluoroplastic-lined centrifugal pumps, selected to match the chemical properties, viscosity, and operating conditions of each duty.
Esto chemical resistant centrifugal pump project demonstrates why selection goes beyond matching flow rate and head. Material compatibility, seal design, and medium-specific hydraulic evaluation all affect suitability. The equipment completed production and delivery arrangements for the Belgian project.
Project Background: Multi-Medium Transfer in a Belgian Fine Chemical Plant
The facility integrates acid-base adjustment, raw material preparation, and process medium circulation. Its transfer requirements included:
- Hydrochloric acid: 31% concentrated, 5% diluted, and recovered acid streams.
- Sodium hydroxide: 32%, 4%, and 2% caustic solutions.
- Corn oil: viscosity of 50–60 cP at operating temperature, requiring hydraulic and motor-power evaluation.
- Process water and pure water: design flow rates of 80–150 m³/h for circulation and supply.
These duties require different wetted materials and sealing arrangements. Recovered acid may also contain impurities or changes in composition, so compatibility must be assessed against the actual liquid and temperature rather than the chemical name alone. Our guía de selección de materiales para bombas químicas explains the main factors.
How We Matched IH and IHF Pumps to Each Medium
For this Belgium project, we combined IH stainless steel pumps with IHF fluoroplastic-lined pumps. The objective was to match each liquid to an appropriate material, seal, and hydraulic configuration, rather than use one material throughout the plant.
IHF Fluoroplastic-Lined Pump for Hydrochloric Acid Transfer
For 31% HCl, diluted acid, and recovered acid streams, the selected IHF configuration uses a steel casing with F46 fluoroplastic lining. The lining separates the acid from the structural metal casing. An external bellows mechanical seal with SiC/SiC faces was specified for the acid duties.
Suitability still depends on temperature, concentration, recovered-acid composition, and the compatibility of all wetted and secondary sealing materials. The lining and seal arrangement must be checked as a complete assembly for the actual service conditions.
IH Stainless Steel Pump for Sodium Hydroxide and Corn Oil
For NaOH solutions and corn oil transfer, the project uses IH series 304 stainless steel centrifugal pumps with the specified mechanical seals and AFLS seal rings. Sodium hydroxide concentration and temperature both influence material suitability; the final configuration must match the approved operating conditions.
For corn oil, the 50–60 cP viscosity requires evaluation of flow, head, efficiency, and shaft power against the water-based pump curve. Viscosity correction and motor sizing help establish whether the selected pump can meet the duty throughout the expected operating range.
Large-Flow IH Pumps for Process Water Circulation
The process water and pure water circuits required design flow rates of 80–150 m³/h. IH100 and IH125 pumps with variable-frequency motor configurations were selected so output can be adjusted to process demand. The actual operating point depends on both the pump curve and the system resistance.
Why Chemical Resistant Centrifugal Pump Selection Requires More Than Flow Rate
Our engineering team evaluates four factors before recommending a configuration:
- Compatibilidad química: resistance of the wetted materials to the actual liquid at its concentration and temperature.
- Seal configuration: seal faces, secondary seals, pressure limits, and any required support arrangement.
- Viscosity impact: changes in flow, head, efficiency, and motor power when pumping liquids such as corn oil.
- Condiciones de funcionamiento: suction conditions, NPSH, temperature changes, and start-stop frequency.
A combined IH/IHF approach allows material selection to follow each duty. Stainless steel used for suitable alkali and water services should not be assumed suitable for hydrochloric acid. The acid circuits instead use the specified fluoroplastic-lined configuration.
Project Pump Models and Configuration
The project equipment includes the following models. The table groups them by series; individual duty points and model-to-medium assignments should follow the project selection documents.
| Serie de bombas | Project Models | Configuración |
|---|---|---|
| IHF fluoroplastic-lined | IHF80-65-125; IHF40-25-160; IHF65-40-200A | Steel casing with F46 lining; specified acid-service mechanical seals |
| IH stainless steel | IH65-50-160; IH100-80-160; IH125-80-160; IH80-65-125; IH40-25-160; IH50-32-200 | 304 stainless steel; seals and motor configurations matched to the relevant duty |
The pumps completed production and delivery arrangements for this fine chemical project. The configuration covers separate acid, alkali, corn oil, and process water duties. Selection is based on the medium and approved operating conditions for each circuit.
About ChangYu Pump
Anhui Changyu Pump and Valve Manufacturing Co., Ltd. manufactures chemical transfer equipment, including fluoroplastic centrifugal pumps, stainless steel chemical pumps, magnetic drive pumps, and semi-submersible pumps. We support material selection, seal configuration, hydraulic evaluation, factory testing, and project supply for chemical processing and related industries.
Recommended Products for Corrosive Chemical Transfer
For related applications, the following ChangYu product lines offer different material and installation options. These are product references; the supplied project models are listed above.
Bomba centrífuga de fluoroplástico serie CYF
Fluoroplastic-lined centrifugal pumps for chemically compatible acid and alkali transfer duties. Confirm lining material, temperature limits, and seal compatibility for the specific liquid.
Bomba centrífuga de fluoroplástico serie CYF
Bomba química centrífuga de acero inoxidable serie CYH
Stainless steel centrifugal pumps for suitable alkali, process water, and other chemical services. Select the stainless steel grade and seal configuration against the actual operating conditions.
Bomba química centrífuga de acero inoxidable serie CYH
Bomba resistente a la corrosión de polietileno de peso molecular ultra alto (UHMWPE) serie UHB
Steel-lined ultra-high molecular weight polyethylene construction for applications requiring both chemical compatibility and wear resistance.
Bomba resistente a la corrosión de polietileno de peso molecular ultra alto (UHMWPE) serie UHB
Bomba vertical para tuberías de plástico fluorado de la serie CYL
A vertical configuration for suitable acid and alkali pipeline transfer, pressurization, and circulation where installation space is limited.
Bomba vertical: Bomba química de fluoroplástico de la serie CYL, resistente a ácidos y álcalis
CYC Series Heavy Duty Magnetic Pump
A magnetic-drive option for suitable hazardous or volatile chemical transfer duties, with containment and operating limits assessed for the actual process.
Bomba magnética de acero inoxidable para trabajo pesado serie CYC
Discuss Your Fine Chemical Pump Requirements
For a chemical resistant centrifugal pump selection, send our engineering team the medium, concentration, temperature, required flow, head, viscosity, and suction conditions. These details help us assess the wetted material, seal configuration, hydraulic performance, and motor sizing for each duty.
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