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Petrochemical SS304 Rotary Lobe Pump Emulsified Asphalt Transfer Pump

Bonve Rotary lobe pump is designed for high viscosity emulsified bitumen and uses dual CAM synchronous drive technology to ensure a stable flow rate of 0.1-400m³/h. Equipped with wear-resistant alloy steel rotor and elastic sealing system, reliable operation in the environment of -20 ° C to 180 ° C, while minimizing shear damage to the emulsion structure. Its modular design enables fast maintenance and a fully sealed construction that meets environmental standards.

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Petrochemical SS304 Rotary Lobe Pump Emulsified Asphalt Transfer Pump

Application Scenarios

In emulsion asphalt production, road construction, and waterproof coating processes requiring high-viscosity fluid handling, temperature resistance, hermetic sealing, and shear stability are critical operational priorities. Bonve’s Reinforced Duplex Stainless Steel 304 Rotary Lobe Pump is engineered to address the rigorous challenges of emulsion asphalt transportation with unmatched reliability.

Unique Structural Advantages

Corrosion-Resistant, High-Temperature Rotor Design
The stainless steel (UNS SS304) rotor provide exceptional structural integrity, withstanding emulsion asphalt’s operational temperatures (50–280°C) and resisting chemical degradation from emulsifiers and stabilizers.

Problem-Solving Capabilities

Challenges of Emulsion Asphalt Handling:

1. Shear Sensitivity: Traditional pumps damage colloidal structures, causing premature demulsification.

2. Thermal Stability: Risk of asphalt solidification due to temperature fluctuations during transfer.

3. Seal Failure: Residue buildup leading to leaks and downtime.

Bonve’s Engineered Solutions:

Low-Shear Transfer Technology
Large-displacement, low-speed cam rotors (≤300 RPM) minimize mechanical shear, preserving emulsion stability.
High-Temperature Sealing System
Dual Mechanical Seals: Primary seal with silicon carbide (SIC/TC) and fluororubber (FFKM) for 280°C resistance;
Dynamic Cooling Jacket: Integrated water-circulating jacket maintains consistent seal temperature, preventing asphalt divulge

Industry-Specific Performance Enhancements

Temperature Control Optimization
Jacket heating/cooling systems adapt to emulsion asphalt’s full temperature range (50–160°C) across production and application.
High-Viscosity Handling
Viscosity Range: 100–2,000,000 mPa·s
Volumetric Efficiency ≥92% at high viscosities.
CIP/SIP Compatibility
Supports rapid Clean-in-Place (CIP) and Steam-in-Place (SIP), with optional food-grade coatings for sanitary requirements.

Mechanical Seal Innovation

Triple-Protection Sealing System:

Primary Seal: SIC faces directly contacting emulsion asphalt, resisting wear and heat.
Secondary Seal: FFKM lip-type barrier preventing external contamination.
Pressure Balancing: Dynamic pressure regulation via built-in sensors extends seal life to 8,000+ hours.

Cross-Industry Adaptability

Road Construction: Efficiently transfers SBS-modified emulsion asphalt, reducing segregation for uniform paving.
Waterproof Coatings: Maintains stability of water-based asphalt coatings during transfer.
Renewable Energy: Handles bio-asphalt slurries with 30% less energy consumption than centrifugal pumps.

Performance Metrics

Uptime: ≥95% operational efficiency at 150°C.
Maintenance Cost: Modular seal design enables 30-minute replacement, cutting downtime by 70%.
Lifecycle Cost: 40% lower than traditional screw pumps, saving ~$22,000 annually (based on 500 MT/day throughput).

Bonve Pumps – Redefining Emulsion Asphalt Transfer with Material Science and Fluid Dynamics Excellence!

Engineered for reliability, precision, and sustainability.

About Bonve Stainless Steel Lobe Pump

Bonve Lobe Pump is a specialized positive - displacement pump with its non-contact pump element design has the ability to cover a wide range of applications in industry. The hygienic design, anti-corrosive stainless steel construction and smooth pumping action have long established these pumps in the food, beverage, dairy and pharmaceutical industries.
Features include:
• Gentle transfer of delicate suspended solids.
• Bi-directional operation.
• Compact size with high performance and low energy input.
• Ability to pump shear sensitive media.
• Easy maintenance.

Bonve lobe pumps basically consist of two lobe rotors, which rotate synchronously driven by a pair of synchronous gears in the gearbox. The rotors are driven by the main shaft and sub-shaft to rotate in a synchronous reverse direction, which changes the pump capacity, builds up high vacuum and discharge pressure, thus an efficient pumping is formed. Gap is kept between the rotors and between the pump casing, no friction, long life, no damage, no physical and chemical reaction to the pumped products.

· Bi-wing rotor diagram

· Tri-lobe rotors diagram

Main Parts of the Complete Pump

Bonve complete pumps are usually composed of bare shaft pump, coupling and its guard, geared motor and base plate. With your order, bare shaft pump or complete pump is supplied.

Bare Shaft Pump Structure

Structure Details

Bonve has an advantage over lobe pump that no other company can match.
1.Rotor:The error of the rotors processed by CNC is extremely small. The unique rotor perfectly seals the inlet and outlet of the pump. The vacuum degree of the pump is up to -0.095MPA. The rotor material and type can be selected according to the characteristics of the pumped product.
2.Shaft: The transmission shaft is processed by CNC machining center, which has characteristics of high precision, high bending strength and strong wear resistance.
3.Pump cavity: The pump cavity is sealed by a pump cover that can be opened quickly, enabling quick maintenance of the pump. The pump body is processed by CNC machining.
4.Gears:High-precision, High-Standard synchronous gears have good meshing, smooth transmission, low noise, and excellent bearing capacity.
5.Mechanical seal: The seal material and type are selected according to the characteristic of the pumped product, to ensure zero leakage, no pollution, and more environmental production.
6.Bearings: Six bearings arranged in a separate arrangement increase the concentricity of the pump operation, enhance the bearing capacity of the shaft and make the pump running more stable, thereby increasing the service life of the shaft and the mechanical seal.
7.Gear box: The gear box is processed by CNC, with high precision, high concentricity and strong versatility.
8.Spindle:We use splines the bearings and spindle, makes the pump less likely to slip. The high-precision spline makes the pump run more smoothly, and the service life is much higher than that of its peers.

Complete Pump Types

Technical Parameters

Model	Displace -ment	RPM	Flow	Dis. Pre.	Power	Vacuum	Port size	Max viscosity
	(L/r)	(r/min)	(m³/h)	(Mpa)	(kW)	(Mpa)	(mm)	(cp)
25BV12-05	0.06	10-1000	0-0.5	0-1.2	0.37-1.1	-0.080	25	1,500,000
40BV12-2	0.15	10-1000	0-2	0-1.2	0.75-2.2	-0.080	40	1,500,000
50BV12-5	0.32	10-800	0-5	0-1.2	1.5-4	-0.085	50	1,500,000
65BV12-10	0.65	10-600	0-10	0-1.2	2.2-7.5	-0.085	65	1,500,000
80BV12-20	1.74	10-500	0-20	0-1.2	4-15	-0.095	80	1,500,000
90BV12-30	2.60	10-500	0-30	0-1.2	5.5-22	-0.095	100	1,500,000
100BV12-40	3.65	10-500	0-40	0-1.2	7.5-30	-0.095	100	1,500,000
125BV12-50	4.60	10-500	0-50	0-1.2	7.5-37	-0.095	125	1,500,000
140BV12-70	6.10	10-500	0-70	0-1.2	11-45	-0.095	150	1,500,000
150BV12-80	7.63	10-500	0-80	0-1.2	11-55	-0.095	150	1,500,000
200BV12-120	11.56	10-400	0-120	0-1.2	15-75	-0.095	200	1,500,000
250BV12-150	14.22	10-400	0-150	0-1.2	18.5-90	-0.095	250	1,500,000
300BV12-200	20.80	10-300	0-200	0-1.2	22-110	-0.095	300	1,500,000
350BV12-300	32.60	10-250	0-300	0-1.2	45-160	-0.095	350	1,500,000
400BV12-400	50.40	10-250	0-400	0-1.2	55-200	-0.095	400	1,500,000

Note:
1. Tested medium: water. Your liquid's density, viscosity and temperature are necessary to supply when choose the pump.
2. Speed, flow rate, electrical power and pressure will be varified according to different liquid properties.
3. Port size can be changed as needed.

Selection Guidelines

Your Industry
About pump medium	Name:
	Density (g/m³):
	Viscosity (mPa.s):
	Temperature (℃):
	PH value:
	Solid content (%):
	Solid size (mm):
Suction side	Pressure: Positive ( ) bar; Negtive ( ) bar		How high (m):
	Suction pipe length (m):		Diameter (mm):
	Bends (Pcs):	T-piece (Pcs):	Valves (Pcs):
Discharge side	Pressure (Mpa):
	Vertical delivery pipe length (m): Total delivery pipe length (m):		Diameter (mm):
	Bends (Pcs):	T-piece (Pcs):	Valves (Pcs):
Required flow rate (L/H)	Operating flow:		Max. flow:
Pump material required	SS304 ( ) SS316 ( ) SS316L ( ) Duplex stainless steel ( )
Motor required	Phase: Single ( ) Three ( )	Voltage (V):	Frequency (Hz):
	IP grade:	Energy efficiency:	Anti-explosive:
Installation type	Fixed ( )	Movable ( )	%

Contact Us

Don't miss out on the opportunity to upgrade your calcium carbonate transfer process—contact us today to learn more or request a quote!

Contact person: Luke Pan

Tel: +86-574-87769810 Fax: +86-574-62962898

Mobile/Whatsapp/Wechat: +86 13586591843

Email: bvsales3@bonvepumps.com

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