HX and HN Series Reciprocating Gas Compressors

HX and HN Series Reciprocating Gas Compressors
The HX and HN series oil-free piston gas compressors offer reliable solutions across a wide range of applications, suitable for handling gases such as air, nitrogen, carbon dioxide, methane, hydrogen, and argon. In addition to standard units, custom designs are available to meet your specific process requirements. Our HX/HN series gas compressors help you control costs thanks to their low maintenance needs.
The HX and HN series high-pressure gas compressors can supply clean energy to natural gas pipeline filling stations and CNG applications, thereby fulfilling Atlas Copco’s commitment to becoming one of the world’s most sustainable companies.

Technical Description of HX and HN Series Reciprocating Gas Compressors
Industrial Air and Gas Applications
The HX and HN series high-pressure reciprocating gas compressors can readily meet the compression challenges encountered in power plants, oil and gas facilities, chemical plants, and industrial processing operations around the world. Our versatile HX/HN series gas compressors feature an energy‑efficient, laterally balanced opposed‑piston design, offering exceptional flexibility and adaptability. They are capable of handling a wide range of gases, including air, nitrogen, carbon dioxide, methane, hydrogen, and argon, and are employed in the following systems and equipment:
･ Gas booster compressor
• High-pressure air/nitrogen supply system for air/nitrogen separation units
･ Nitrogen boosters for a variety of industries, including metals, food, and beverage
Our flexible HX/HN designs can be used in a wide range of applications and industries.

Oil-free quality can be achieved under any conditions.
These oil-free compressors employ PTFE piston rings and long baffles to ensure gas quality. This advantage is critical, as even trace amounts of oil contamination are unacceptable in many applications and can pose significant risks. The HX/HN series high-pressure gas compressors are designed to operate under a wide range of harsh conditions, including outdoor and indoor environments, refineries, deserts (with high-temperature settings), and sandy, dusty settings.

Adjustable flow rate
To ensure exceptional flexibility during operation, these compressors feature a variety of control systems, including an optional variable-speed drive that enables wide-ranging flow adjustments from 40% to 100%, as well as valve‑based loading/unloading mechanisms. This allows flow rates to be precisely tailored to the actual utilization of the compressor and its bypass system (pressure‑control valve). Moreover, our experts are always on hand to assist you in selecting the optimal compressor options to meet your specific requirements.

Technological Advantages
• Outstanding oil-free quality
Our oil-free technology meets the stringent ISO Class 0 oil‑free standard, ensuring the highest possible quality of air and gases for your applications. Oil‑free delivery is not only critical in applications where gases come into contact with end products but also helps prevent potential adverse effects of oil on your processes and equipment.
• Meet your application needs
We can meet your requirements for gas‑component compatibility and inlet pressure by leveraging custom‑designed components and materials. Depending on the type of gas to be processed and its moisture content, we select appropriate components—such as valves, piston rod seals, and cylinders—or opt directly for a standardized configuration.
• Capable of handling a variety of gases and applications.
Choose one of the industry‑standard reciprocating compressors: the HX/HN series can handle a wide range of gases, including air, nitrogen, hydrogen, argon, carbon dioxide, biomethane, natural gas, and pipeline‑filled compressed natural gas.
• The compressor can operate around the clock.
The HX/HN series piston-type gas compressors deliver efficient, cost-effective performance under a wide range of demanding field conditions, while offering low maintenance requirements and extended overhaul intervals, thereby enhancing your uninterrupted production output.
• Can operate for up to 8,000 hours per year without maintenance.
Choose a machine that can reliably perform its tasks. The HX/HN series gas compressors feature a horizontally balanced opposed‑piston design that ensures safety and minimizes vibration, enabling thousands of operating hours per year without the need for maintenance. Furthermore, in compliance with API 618 standards, they incorporate low piston speeds and low interstage temperatures, helping to protect the machine’s internal components.

Technical Specifications

･ Technology
Complies with API 618 standard.
･ Ability
The flow rate ranges from 130 to 14,000 Nm³/h (76.5 to 3,240 scfm).
･ Intake pressure
0.035 to 50 bar(g)/0.0508 to 725 psig.
･ Discharge pressure
It depends on the type of compressed gas:
• Air and nitrogen: up to 150 bar(g)/2175 psig.
• Argon, methane, biomethane: up to 100 bar(g)/1450 psig.
• Hydrogen: up to 100 bar(g)/1450 psig.
• Carbon dioxide: up to 100 bar(g)/1450 psig.
• Gas mixtures: depend on the gas composition
(Hydrogen sulfide content is within acceptable limits)
･ Ability
The flow rate ranges from 130 to 14,000 Nm³/h (76.5 to 3,240 scfm).
･ Intake pressure
0.035 to 50 bar(g)/0.0508 to 725 psig.
･ Discharge pressure
It depends on the type of compressed gas:
• Air and nitrogen: up to 150 bar(g)/2175 psig.
• Argon, methane, biomethane: up to 100 bar(g)/1450 psig.
• Hydrogen: up to 100 bar(g)/1450 psig.
• Carbon dioxide: up to 100 bar(g)/1450 psig.
• Gas mixtures: depend on the gas composition
･(Hydrogen sulfide content is within acceptable limits)
･ Pressure ratio
Minimum 1.2 / Maximum 5 (depending on the gas).
･ Series
Levels 1 to 4.
･ Dew point
We employ a flexible solution to compress both wet and dry gases.
･ Powder
30 to 560 kW / 40 to 750 hp
･ Rotational speed
360 to 1000 rpm.

Meets international standards
The HX and HN series reciprocating gas compressors have been certified to multiple major international standards, including:
･ CE/PED
･ ASME
･ SQRL
･ GOST
• API
･ IEC/CE
• UL/CSA
･ ATEX Zone
･ PED
• Additional certifications for other codes or standards may also be obtained as needed.