LDH Small Liquid Nitrogen Generator 0.5L/h 8-12L/Day Suitable for Bovine Sperm Freezing

• Customization: Available
• Application Fields: Chemical
• Certification: CE, ISO, RoHS
• Model NO.: LPLN-10
• Condition: New
• Noise Level: Low
• Parts: Gas Tank
• Purpose: Gas Storage
• Types: Adsorption Nitrogen Generator
• Usage: Nitrogen
• Volum: Small
• Liquid Nitrogen Production Rate: Quick
• Temperature: -196
• Theory: Low Temperature Liquefied
• Function: Liquid Machine
• Name: Liquid Nitrogen Equipment
• Name1: Liquid Nitrogen Plant
• Purity: 95-99.999%
• Machine Size: Medium
• Transport Package: Wooden Case
• Specification: as required
• Trademark: LDH
• Origin: China
• HS Code: 8414804090
• Production Capacity: 1000 Units/Year
• Package Size: 250.00cm * 150.00cm * 220.00cm
• Package Gross Weight: 600.000kg

Product Description

LDH GAS Systems Company manufacture Liquid Nitrogen Generator 0.5L/hr 
 

 

Company introduction

LDH GAS is a high-tech gas company with over a decade of expertise in the development and production of gas and liquid nitrogen products. Our core technical team, comprising professionals from Peking University and the Chinese Academy of Sciences, ensures we maintain absolute technological advantages in the industry.

 

Our main products include:

 

• High-purity nitrogen generators (99%-99.9995% purity)
• High-purity oxygen generators (90%-99.5% purity)
• Liquid nitrogen generators (95%-99.9995% purity)

 

These products are widely applied across industries such as manufacturing, healthcare, laboratory research, cell biology, and life sciences. Our liquid nitrogen solutions have been successfully deployed in the United States, Peru, Southeast Asian countries, Germany, and Lhasa (China), demonstrating stable performance at altitudes as high as 4,500 meters.

 

Liquid Nitrogen Generator

1. Capacity from 0.5L/h to 50L/h. Meet all your requirements.
2. Low power consumption.
3. Automatic operate. One key start.
4. Small floor space.
5. Durable. Can work 24 hours per day.
6. One station of liquid nitrogen generator manufacture. ( we supply liquid nitrogen generator, vacuum tube and liquid nitrogen dewar.)

 

Manufacturer Parameters for LPLN Liquid Nitrogen Generators
Model	Capacity	Processing Capacity	Form	Purity	Voltage & Power	Dimensions (mm)	Weight (KG)	Ambient Temperature	Configuration
LPLN-10	8-10L/day	>5	All-in-one	≥99	220V/2.5KW	700*900*1850	270	0-30ºC(25ºC optimal)	30L liquid nitrogen cylinder
LPLN-20	20-24L/day	>6	All-in-one	≥99	220V/4.5KW	1250*860*1800	490	0-30ºC(25ºC optimal)	50L liquid nitrogen cylinder
LPLN-40	40-50L/day	>10	All-in-one	≥99	380V/8.2KW	1580*1230*1950	824	0-30ºC(25ºC optimal)	100L liquid nitrogen cylinder
LPLN-80	72-80L/day	>15	All-in-one	≥99	380V/10.5KW	1600*1250*2040	924	0-30ºC(25ºC optimal)	150L liquid nitrogen cylinder
LPLN-120	120L/day	>15	Module	≥99	380V/13KW	Cryogenic main unit: 2500×1200×1855  Liquefier: 1450×1060×2020  Liquid storage: 400×1200×600	1350	0-30ºC(25ºC optimal)	300L liquid nitrogen cylinder
LPLN-240	240L/day	>30	Split cabinet type	≥99	380V/30.8KW	Cryogenic main unit: 1410×1400×2030  Liquefier: 1820×1080×1090  Chiller: 1300×750×1450 Liquid storage: Φ900×1410	2311	0-30ºC(25ºC optimal)	300L liquid nitrogen cylinder
LPLN-300	280-320L/day	>40	Split cabinet type	≥99	380V/34KW	Air compressor: 1900×1200×2095 Cryogenic main unit: 2500×1200×1855 Liquefier: 2060×1300×2130 Chiller: 1900×720×1350 Liquid storage: Φ938×1500	3800	0-30ºC(25ºC optimal)	500L liquid nitrogen cylinder
LPLN-480	480L/day	>50	Medium modular	≥99	380V/48.3KW	Air compressor: 2000×1300×1205 Cryogenic main unit: 2600×1300×2285 Liquefier: 2060×1300×2130 Chiller: 1900×950×1780 Liquid storage: 1965×1260×1480	5745	0-30ºC(25ºC optimal)	1000L liquid nitrogen cylinder
LPLN-720	720L/day	>50	Medium modular	≥99	380V/64.1KW	Air compressor: 2070×1555×2195 Cryogenic main unit: 2600×1355×2285 Liquefier: 2060×1300×2130 Chiller: 1800×950×1780 Liquid storage: 1965×1260×1480	5909	0-30ºC(25ºC optimal)	1000L liquid nitrogen cylinder
LPLN-960	960L/day	>80	Medium modular	≥99	380V/81.3KW	Air compressor: 2300×1950×2150 Cryogenic main unit: 2700×1800×2150 Liquefier: 3000×840×1930 Chiller: 1900×950×1780 Liquid storage: 1965×1260×1480	6030	0-30ºC(25ºC optimal)	1000L liquid nitrogen cylinder
LPLN-1200	1200L/day	>80	Modular	≥99	380V/81.3KW	Air compressor: 2300×1950×2150 Cryogenic main unit: 2700×1800×2150 Liquefier: 3000×840×1930 Chiller: 1900×950×1780 Liquid storage: 1965×1260×1480	6030	0-30ºC(25ºC optimal)	1000L liquid nitrogen cylinder
LPLN-1200	1200L/day	>80	Container type	≥99	380V/95.6KW	12192*2438*2896	10500	0-30ºC(25ºC optimal)	1000L liquid nitrogen cylinder

  LDH Liquid nitrogen generator models and technical sheet (part):
 
LDH is one of the professional liquid nirogen generator manufacturer ,we can offer all modes of liquid nitrogen generators.
From 0.5L/hr to 50L/hr , purity 95% to 99.999% 
We can provide a complete system or individual equipment parts based on your requirements. For more information, please feel free to contact us. 



LDH Liquid nitrogen generator drawing 

working principle

 

Mixed-Refrigerant Joule-Thomson (MRJT) Refrigerator for Nitrogen Liquefaction
A single-compressor-driven mixed-refrigerant Joule-Thomson (MRJT) refrigerator with precooling, developed by the Technical Institute of Physics and Chemistry (TIPC), Chinese Academy of Sciences (CAS), is designed for liquefying nitrogen at -180°C in nitrogen liquefiers. The MRJT cycle employs recondensation and multicomponent mixed refrigerants, optimizing a blend of refrigerants with distinct boiling points to match their efficient refrigeration temperature ranges. This technology enables high-efficiency cooling across a wide temperature spectrum from -40°C to -196°C.

 

Key Features:

 

• Utilizes commercially proven compressors and heat exchangers
• Achieves high liquefaction efficiency and reliability
• Requires no maintenance and offers extended operational life

 

LDH Liquid Nitrogen Generator Applications
Primarily used in universities and research laboratories, the LDH LN2 generator enables independent liquid nitrogen production, eliminating the need for off-site procurement of liquid nitrogen dewars and enhancing operational convenience.

 

Technical Specifications:

 

• Customizable output: 0.5-50 liters per hour (tailored to user requirements)
• Compact and portable design with low energy consumption
• Fully automated one-button startup/shutdown functionality, requiring minimal operator training (no specialized technical expertise needed)

 

 

Product Applications

Liquid Nitrogen: Properties, Grades, and Applications

 

Liquid nitrogen (LN2) is a cryogenic liquid with a boiling point of -196 ºC, derived from nitrogen-an element comprising over 70% of Earth's atmosphere. As an inert, colorless, non-toxic, and volatile substance, LN2 exhibits unique physical properties that enable its diverse applications. Due to its high volatility at ambient temperatures, LN2 is stored in specialized insulated containers known as liquid nitrogen tanks.

Grades and Purity

Liquid nitrogen is categorized by purity into two primary grades:

 

• Food Grade: Designed for direct contact with consumables, this grade meets stringent safety standards with a purity level of 99.999% (5N), ensuring compliance with food safety regulations.
• Industrial Grade: Primarily used for non-consumable applications, its purity is lower than food grade but still suitable for most industrial processes.

Safety Considerations

Despite misconceptions about safety risks, LN2 is inherently safe when handled properly. Upon exposure to air, it rapidly vaporizes into nitrogen gas, which is non-reactive and non-toxic. However, standard safety protocols must be observed, including proper personal protective equipment (PPE) and ventilation, as with any industrial fluid.

Technical Specifications

Production & Storage:

 

• Production Capacity: 1-50 L/h
• Storage Volume: 120 L
• Operational Temperature: 10 ºC-38 ºC

 

Control & Power:

 

• Control System: PLC touch screen interface
• Power Supply: 200-400V, 3-phase, 50/60Hz

Applications

In industrial settings, LN2 is produced via fractional distillation of compressed liquid air. Its chemical inertness and ultra-low temperature make it ideal for:

 

1. Food Industry:
   • Rapid freezing and cold-chain transportation of perishable goods
   • Production of artisanal ice creams and frozen desserts
2. Biomedical Sciences:
   • Cryopreservation of biological samples (sperm, eggs, stem cells) at ultra-low temperatures to maintain viability
   • Cryosurgery for tissue ablation
3. Scientific Research:
   • Low-temperature physics experiments
   • Demonstrations in educational settings (e.g., brittle fracture of materials at cryogenic temperatures)
4. Industrial & Technical Applications:
   • Cooling in high-temperature superconductor research
   • Freezing of tunnels and pipelines for maintenance
   • Nitrogen supply in fertilizer production and chemical analysis
   • Cryogenic grinding in pharmaceuticals and materials science
   • Annealing and hardening processes in glass and metal industries
5. Beverage & Seafood Industries:
   • Carbonation and rapid chilling in craft beverages
   • Flash freezing of seafood to preserve texture and freshness

 





 

Liquid Nitrogen Liquefaction

 

A Liquid Nitrogen Plant (LNP) extracts nitrogen gas from atmospheric air and converts it into liquid nitrogen using cryogenic cooling technology. This process involves two primary methods for nitrogen liquefaction:

 

1. Pressure Swing Adsorption (PSA) with Cryogenic Generator:
   Utilizes molecular sieves to separate nitrogen from air prior to cryogenic cooling.
2. Liquid Air Distillation:
   Involves fractional distillation of liquefied air to isolate nitrogen based on its boiling point.

Working Principle of Liquid Nitrogen Plant

1. Air Compression:
   Atmospheric air is compressed to 7 bar in a multi-stage compressor, generating high-temperature compressed air.
2. Heat Exchange & Moisture Removal:
   The heated compressed air is cooled via an external refrigeration system, then passed through a moisture separator to eliminate water vapor, ensuring dry air feedstock.
3. Gas Separation:
   The dried air is directed through a bed of carbon molecular sieves (CMS), which selectively adsorb oxygen and other trace gases, allowing purified nitrogen gas (≥99% purity) to pass through.
4. Cryogenic Liquefaction:
   The separated nitrogen gas is cooled in a cryogenic cooler to its boiling point (77.2 K), causing it to liquefy. This phase change is achieved through continuous heat removal in a closed-loop cooling system.
5. Storage:
   Liquid nitrogen is collected and stored in vacuum-insulated Dewar vessels, designed to maintain cryogenic temperatures for extended periods, facilitating its use in various industrial applications.

 

Key Improvements:

 

• Structured Hierarchy: Separated into method categories and step-by-step workflow with numbered sequences.
• Technical Precision: Replaced ambiguous terms (e.g., "Cryo cooler" → "cryogenic cooler") and specified purity levels.
• Process Clarity: Eliminated redundant descriptions (e.g., "trapping moisture" → "eliminating water vapor") and emphasized thermodynamic principles (boiling point, heat removal).
• Industry Standards: Used PSA as the standard abbreviation for pressure swing adsorption and clarified CMS functionality.

 

After Sales Service

Warranty and Quality Assurance

1. Warranty & After-Sales Support
   All products come with a 1-year comprehensive warranty, including:
   • Online guidance for installation and debugging
   • Access to detailed installation/debugging video tutorials
   • Dedicated product files maintained for long-term traceability
   • Continuous convenient after-sales support for extended service needs

 

Factory Testing Standards

Every product undergoes rigorous in-process machine testing before shipment. Units are only cleared for delivery after achieving 100% compliance with specified performance standards.