Products

Vacuum Pump,Ceramic Water Ejector

CERAMIC VACUUM PUMP UNIT

The system uses a liquid ring vacuum pump, gas ejector, and mechanical booster pump as its main components. All gas-contacting parts are made from highly corrosion-resistant materials such as ceramics, glass lining, fluoropolymer, and carbon. It is suitable for use with most fluids, excluding hydrofluoric acid and strong alkalis, and effectively resolves or reduces many of the issues traditionally encountered with conventional type of vacuum pumps handling corrosive fluids.

Features

Highly Corrosion-Resistant Vacuum Generation Unit

This vacuum unit uses a liquid ring vacuum pump, gas ejector, and mechanical booster pump as its main components. All gas-contacting parts are made primarily of ceramics and other highly corrosion-resistant materials. It offers a pumping speed of up to 300 m³/h and can achieve a vacuum level of up to 0.04 kPa. Capable of handling a wide range of acidic gases, excluding hydrofluoric acid and alkaline gases. From bench-scale test plants to full-scale production facilities, it is suitable for use as a core vacuum generation unit.

Problems with Conventional Pumps

Oil-Sealed Rotary Vacuum Pumps

- Maintenance costs due to oil solidification, frequent disassembly cleaning
- Increased costs for regular oil replacement
- Higher costs for regular pump replacement
- Additional costs for detoxifying treatment systems upstream of the pump
If the liquid-adjacent part is glass lining, PTFE, or Kalrez O-rings

- Increased oil consumption
Corrosion-resistant metal liquid ring vacuum pumps

- High cost of regularly replacing components such as impellers
- Increased costs for installing detoxifying treatment systems and wastewater processing
Steam ejectors

- Increased costs for installing treatment systems for condensed water and managing wastewater

Advantages of the Highy Corrosion-Resistant Vacuum Generation Unit

Excellent Exhaust Performance

By combining a liquid ring vacuum pump with 65A in/outlet port nozzle and a mechanical booster pump with 80A port nozzle, the system achieves a pumping speed of up to 300 m³/hr and a final vacuum of up to 0.04 kPa.
It can be used as a core vacuum generation unit from bench-scale test plants to full-scale production facilities.
Energy-Saving, Space-Saving Vacuum Generation Unit

By adopting partially stabilized zirconia (PSZ), which has excellent strength and toughness, in the rotating parts, the unit achieves wall thickness reduction and high-speed rotation comparable to metal vacuum pumps, resulting in high exhaust efficiency and a small, compact design.
Compared to steam ejectors, it can operate with approximately 50% less kinetic energy and in about 30% less space.
Fully Instrumented Automation

We design and manufacture fully automated units that control all operations, including pump operation, temperature and pressure detection, and valve actuation.

Main Applications

Vacuum distillation, gas exhaust / gas transfer, liquid transfer, gas absorption

Selection Table

Ceramic vacuum pumps should be used at or below the following temperatures

Liquid ring vacuum pump: 80℃ (gas inlet temperature)
Gas ejector: 80℃ (gas inlet temperature)
Mechanical booster pump: 80℃ (gas inlet temperature)

BL: Liquid ring vacuum pump (compressor)
JL: Gas ejector
BM: Mechanical booster pump
( ) indicates motor power

Configuration and Features of Standard Units

Comparison of units without and with seal liquid circulation: For vacuum levels between 8 and 10101.3 kPa, the unit without circulation uses single-point injection as standard. The unit with circulation utilizes the pump’s generated differential pressure for self-circulation of the seal liquid, allowing for external seal liquid replenishment and minimizing waste liquid. For compression specifications, neither type includes a check valve. For vacuum levels between 1.33 and 13.3 kPa, both types can use exhaust gas as the driving gas for the gas ejector. For vacuum levels between 0.04 and 1.33 kPa, both types have gas ejector valves that can be operated manually or automatically, and exhaust gas can be used as the gas ejector’s driving gas.

[Main Materials of Auxiliary Equipment]

Separator Tank: Fluororesin (ETFE) lining, Glass lining
Check Valve: PTFE, PFA + FCD-S
Heat Exchanger: Carbon
Bellows: PTFE
Piping: PTFE lining, Glass lining
Valve: Alumina ceramics + FCD-S
Demister: Glass lining + FEP mesh (optional)

Dimensions and Weight of Standard Unit

Vacuum 8 to 10101.3 kPa: Size BL-13, Weight 1300 kg. Vacuum 1.33 to 13.3 kPa: Size JL-1010 + BL-13, Weight 1400 kg. Vacuum 0.04 to 1.33 kPa: Size BM-16 + JL-1010 + BL-13, Weight 1900 kg.

[Components]

- BL-type liquid ring vacuum pump
- BM-type mechanical booster pump
- JL-type gas ejector
- Ball check valve
- Conversion flange
- Adapter

CERAMIC WATER EJECTOR

The NGK ceramic water ejector is a device that uses high-pressure water or other liquids as the driving fluid, which is sprayed from a nozzle to suction corrosive gases or liquids. It is widely used for priming corrosion-resistant pumps, transporting acidic exhaust gases, and mixing gases with liquids or liquids with liquids.

Features

Excellent Corrosion Resistance

Parts in contact with the driving fluid and absorbed fluid are made of chemically resistant industrial ceramics with superior corrosion resistance and strength. The ejector can be used with most gases and liquids except alkaline solutions and hydrofluoric acid.
Excellent Wear Resistance

Ceramics are highly resistant to wear, allowing for stable operation over long periods.
High Performance

The nozzle and diffuser are manufactured with high precision, ensuring high efficiency and stable performance.
Compared to other vacuum generation devices, it offers a larger suction capacity and can maintain a high vacuum level.
Cost-Effective

With a simple structure and the use of relatively inexpensive ceramic materials, it is more affordable than other corrosion-resistant metal water ejectors or mechanical vacuum pumps of similar capacity.
Easy Installation

Since there are no moving parts, a robust foundation is unnecessary, and it can be easily installed on steel frames or similar supports.
It can also be installed outdoors without any issues.
Easy Operation

Operation is simple, requiring only opening and closing of the driving fluid supply valve, with no complex procedures needed.

Applications

The ceramic water ejector is used as a vacuum device for handling corrosive gases, with applications including:

Distillation equipment
Evaporation and concentration equipment
Cooling and crystallization equipment
Dehydration and drying equipment
Deodorization equipment
Degassing equipment

Main Dimensions

Model	Nominal Diameter	d1	d2	d3	PCD	n	m1	m1	h	A	B	C	D	E	F	G	Weight (kg)
JW-05	25A	25	50	50	90	4	M12	Φ15	Φ15	115	185	300	93	100	160	90	17
JW-05	50A	50	80	85	120	4	M12	M12	Φ19	140	360	500	124	135	245	130	41
JW-05	80A	80	115	115	150	8	M12	M12	Φ19	190	600	790	150	160	280	150	70
JW-05	100A	100	135	140	175	8	M12	M12	Φ19	230	710	940	168	220	340	200	110

Performance

Maximum Operating Pressure: 0.8 MPaG, Driving Differential Pressure Limit: 0.4 MPa, Maximum Operating Temperature: 150℃, Allowable Thermal Shock Temperature Difference: In case of rapid cooling: 60℃, In case of rapid heating: 80℃

The above graph shows expected performance. Please note that this does not guarantee actual performance. For special applications or large-capacity requirements, please contact us.