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Skid-Mounted High-Efficiency Oil-Free LPG Piston Compressor

Gas composition (mol%): liquefied gas
Flow rate : 1.5m ³/min
Inlet pressure: 0.1-1.42MPa (G);
Inlet temperature: ≤ 40 ℃
Exhaust pressure: 0.4-1.72 MPa (G);
Main motor power: 22kW
Overall dimensions of the machine: ~2500 × 1600 × 1700mm
Whole machine weight: ~2.5T
Availability:
Quantity:
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Overview


The ZW-1.46 / (1-14.2) - (4-17.2) Liquefied Gas Compressor is a high-performance industrial equipment manufactured by Bengbu United Compressor, a leading China-based manufacturer specializing in gas compression solutions. Designed for handling low-boiling, volatile substances, this compressor is engineered to deliver reliability and efficiency across diverse applications.

 

Ideal for sectors including urban construction, petroleum, defense, coal mining, geology, chemical engineering, metallurgy, machinery manufacturing, pharmaceuticals, and liquefied gas stations, this compressor excels in liquid transportation and residual gas recovery of substances like propane, butane, and butene. Its variant models can also be tailored for propylene and liquid ammonia handling, making it a versatile choice for multiple industrial needs.

 

Key technical specifications set this compressor apart: it boasts a processing capacity of 1.5m³/min, with an inlet pressure range of 0.1-1.42MPa (G) and an inlet temperature limit of ≤40℃. The exhaust pressure reaches 0.4-1.72MPa (G), powered by a 22kW main motor for consistent performance. With overall dimensions of ~2500 × 1600 × 1700mm and a weight of ~2.5T, it balances power with manageable size for flexible installation.

 

Built with a modular design, the ZW-1.46 / (1-14.2) - (4-17.2) Liquefied Gas Compressor supports customization to meet specific customer requirements, from flow rate and pressure to environmental adaptability, ensuring it integrates seamlessly into unique operational setups.


Features


High Efficiency & Reliability


This compressor is engineered for high efficiency and strong reliability, with a high degree of automation that minimizes manual intervention. Its design reduces the number of vulnerable parts, lowering maintenance needs and extending service life. The integration of precision components—backed by multiple patents including a piston rod thread protective sleeve (ZL 2017 2 1907021.7) and a piston ring support device (ZL 2018 2 0294776.2)—ensures stable operation even in demanding conditions.


Low Vibration & Noise, Easy Maintenance


Operating with low vibration and low noise, the compressor creates a more comfortable working environment compared to conventional models. Its user-friendly design simplifies operation and maintenance, with accessible components and clear interfaces for routine checks. This ease of upkeep translates to reduced downtime, keeping industrial processes running smoothly.


Integrated Skid-Mounted Design


The main and auxiliary equipment of the compressor are all installed on a skid, ensuring stable and reliable operation. This skid-mounted design simplifies transportation and on-site installation, saving time and labor costs. Whether for fixed facilities or temporary setups, the compact integration enhances flexibility in deployment.


Customizable Configurations


Recognizing diverse industrial needs, the ZW-1.46 / (1-14.2) - (4-17.2) Liquefied Gas Compressor offers extensive customization. Options include:



· Structural forms: D-type, M-type, S-type, W-type, V-type, Z-type

· Cooling methods: water-cooled, air-cooled, mixed cooling

· Installation forms: fixed, mobile, skid-mounted, cabin-type

· Drive modes: motor-driven, diesel engine-driven

· Packaging & transportation: sea, air, or land transport with packaging options like metal cabins, wooden boxes, or soundproof cabins


Application Area


The product is widely used in urban construction, petroleum, national defense, coal, geology, chemical industry, metallurgy, machinery manufacturing, medicine, liquefied gas stations and other departments. In addition, it is suitable for liquid transportation and residual gas recovery of low boiling and volatile substances such as propane, butane, and butene. Its variant products can be used for liquid transportation and gas recovery of propylene, liquid ammonia, etc.


Highlight Advantages



high efficiency operating Installation honor
Has high efficiency, strong reliability, and high degree of automation; Less vulnerable parts, low vibration, low noise, and easy operation and maintenance The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor The entire machine components are carefully designed


Patent Certificates



certificates

A piston rod thread protective sleeve ZL 2017 2 1907021.7


certificates

A piston ring support device ZL 2018 2 0294776.2

certificates

A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors


certificates

Integrated long short double compartment ZL 2018 2 0294762.0


Whole Machine Description


The compressor adopts D-type (symmetrical balance type), water-cooled, oil-free lubrication, reciprocating piston type, 2-row 3-stage compression, and the entire unit is supplied in a modular manner.

The compressor crankcase is made of gray cast iron and has four holes of different diameters for installing crosshead slides, bearings, and bearing seats. The lower part of the crankcase can store lubricating oil for the compressor to lubricate; The upper surface of the crankcase has an interface for installing a fuel inlet (breathing port) cover plate; In addition, the crankcase also has spare interfaces such as oil drain port, oil gauge observation port, bearing seat oil injection port, and installation oil temperature measurement port. The oil drain port of the crankcase has been connected to the outside of the compartment and is equipped with a manual ball valve for oil discharge from the crankcase.

The middle body of the compressor is a double middle body structure, ensuring that the middle body space is greater than one stroke, preventing compressor oil from entering the cylinder from the crankcase, thus ensuring that compressor oil does not contaminate the medium. The material of the compressor cylinder is gray cast iron/forged steel, and it adopts an oil-free lubrication design, which does not require oil lubrication. The cylinder head material is gray cast iron/forged steel, and the air valves are arranged axially on the cylinder head.


DW 6.74 (3.3) / 0.7 (5-12) -12 Hydrogen Compressor DW 6.74 (3.3) / 0.7 (5-12) -12 Hydrogen Compressor


The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.


  • Structural form: D-type/M-type/S-type/W-type/V-type/Z-type

  • Cooling method: water cooling/air cooling/mixed cooling

  • Installation form: fixed/mobile/pry mounted/cabin type

  • Drive mode: motor drive/diesel engine start

  • Transportation: sea/air/land

  • Packaging:

    Metal cabin
    Wooden box
    Soundproof cabin
    Metal cabin Wooden box
    Soundproof cabin


Technical Parameter



No. Model Medium Flow rate
(Nm3/h)
Exhaust pressure
MPa(G)
Motor power
(kW)
oling meth Overall dimensions
(mm)
Weights
(kg)
1 ZW-0.8/(4.5~15)-(12.5~23) Industrial ammonia 0.8 1.25~2.3 15 Air-cooled 1650×650×1050 550
2 ZW-0.8/10-16 Isobutane 0.8 1.6 11 Air-cooled 1650×650×1150 450
3 ZW-0.8/10-16 Liquefied gas 0.8 1.6 11 Air-cooled 1750×900×1250 1200
4 ZW-0.8/16-24 Ammonia gas 0.8 2.4 15 Air-cooled 1800×950×1250 1300
5 ZW-1.0/(1~10)-(5~14) Methylene chloride 1.0 0.5~1.4 15 Air-cooled 1700×850×1050 600
6 ZW-1.0/(1~6)-(4~9) Dimethylamine 1.0 0.4~0.9 15 Air-cooled 1700×850×1050 600
7 ZW-1. 1/10-15 Ammonia gas 1.1 1.5 15 Air-cooled 1700×850×1100 700
8 ZW-1. 1/10-16 Liquefied gas 1.1 1.6 15 Air-cooled 1800×950×1250 1300
9 ZW-1. 1/16-24 Ammonia gas 1.1 2.4 22 Air-cooled 1650×850×1050 750
10 ZW-1. 1/16-24 Ammonia gas 1.1 2.4 22 Air-cooled 1850×950×1300 1400
11 ZW-1.5/10-16 Liquefied gas 1.5 1.6 22 Air-cooled 1850×950×1300 1400
12 ZW-1.5/16-24 Ammonia gas 1.5 2.4 30 Air-cooled 1900×980×1300 1500
13 ZW-2.0/10-16 Isobutylene 2.0 1.6 36 Air-cooled 1900×900×1200 900
14 ZW-3.0/10-16 Liquefied gas 3.0 1.6 45 Air-cooled 2200×1400×1750 2000
15 DW-3.0/10-15 Ammonia gas 3.0 1~1.5 45 Water-coole d3200×2200×1700 3500
16 PW-2.2/(3.98~14.6)-(7.5~18. 1) Ammonia gas 2.2 0.75~1.8 30 Water-cooled 2300×1500×1800 2500
17 VW-6.0/10-16 Liquefied gas 6.0 1.6 75 Water-coole d  2800×1700×1700 3000
18 VW-8.0/10-16 Liquefied gas 8.0 1.6 110 Water-coole d  2800×1800×1800 4500
19 ZW-0.5/(3.5~5.8)-(7.2~9.5) Methylamine 0.5 0.72~0.95 7.5 Water-cooled 1650×700×1100 700
20 ZW-0.8/(0~3.5)-(3~6.5) Vinyl chloride 0.8 0.3~0.65 11 Water-cooled 1650×650×1150 650
21 ZW-0.8/(2~15)-20 Propane 0.8 2.0 22 Water-coole d  3000×1800×2400 3500
22 ZW-0.8/3-8 n-Butane 0.8 0.3~0.8 11 Water-cooled 1650×850×1050 600
23 ZW-1.0/3-6 Pentane 1.0 0.3~0.6 11 Water-cooled 1700×850×1050 650
24 ZW-1. 1/10-16 Propane 1.1 1.6 18.5 Water-cooled 1700×650×1100 600
25 ZW-1. 1/7-14 Propane 1.1 0.7~1.4 15 Water-cooled 1700×650×1100 600
26 ZW-1.5/10-16 Propylene 1.5 11.6 22 Water-coole d  2200×1600×1600 1500
27 ZW-1.5/16-24 Propylene 1.5 2.4 30 Water-coole d  2300×1600×1650 1500
28 ZW-2.0/10-16 Liquefied gas 2.0 1.6 30 Water-cooled 1900×980×1300 1500
29 ZW-2.0/16-24 Liquefied gas 2.0 2.4 37 Water-cooled 1900×100×1350 1600
30 ZW-3.0/7-12 Liquefied gas 3.0 1.2 45 Water-coole d  2200×1000×1200 1600


Project Case


Ukraine Project Alibek oilfield in Southern Kazakhstan Ningxia Zhongneng new materials engineering
Alibek oilfield in Southern Kazakhstan Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. Ningxia Zhongneng new materials engineering


FAQ


What media can the ZW-1.46 / (1-14.2) - (4-17.2) Liquefied Gas Compressor handle?


This compressor is primarily designed for liquefied gas (mol%). It efficiently handles low-boiling, volatile substances such as propane, butane, and butene. Variant models can also be customized for propylene, liquid ammonia, and other similar media, making it suitable for a wide range of industrial gas handling tasks.


What are the key technical parameters of this compressor?


Core parameters include a processing capacity of 1.5m³/min, inlet pressure of 0.1-1.42MPa (G), inlet temperature ≤40℃, and exhaust pressure of 0.4-1.72MPa (G). It is powered by a 22kW main motor, with overall dimensions of ~2500 × 1600 × 1700mm and a weight of ~2.5T.


Is the compressor suitable for outdoor or harsh environments?


Yes. The compressor’s robust design, including optional mobile or skid-mounted installations and durable materials (gray cast iron/forged steel for cylinders and cylinder heads), ensures it performs reliably in outdoor, industrial, or harsh environments. Customizable cooling and protection features further enhance its adaptability.


How does the compressor ensure oil-free media handling?


The compressor uses a double middle body structure that ensures the middle body space exceeds one stroke, preventing compressor oil from entering the cylinder. Combined with an oil-free lubrication design for the cylinder, this guarantees that the media remains uncontaminated by oil, critical for applications requiring high purity.


Are there successful project cases for this compressor?


Yes. The compressor has been deployed in projects worldwide, including the Alibek oilfield in Southern Kazakhstan, the Zaozhuang CNG compressor project by Chengdu Shenliang Technology Co., Ltd., and the Ningxia Zhongneng new materials engineering project. These cases demonstrate its reliability in diverse industrial settings.


How can I get a customized solution for my specific needs?


Bengbu United Compressor provides tailored solutions based on your specific requirements, including flow rate, purity, pressure, operating environment, main purpose, and other unique needs. Our team works from design to production to deliver a compressor that aligns perfectly with your operational demands. Contact us via WhatsApp, phone, or email for personalized support.


Telephone

+86 13955206799

Landline

+86-552-4190082

Address

No. 66 Jinhe Road, Huaiyuan Economic Development Zone, Bengbu City

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