In the food packaging industry, nitrogen gas serves as an ideal protective gas for food preservation, directly influencing the shelf life, taste, and quality of the food. The Lida Heng Nitrogen Generator, with its outstanding performance, precise nitrogen purity control, and professional design suitable for the food industry, has become the preferred equipment for many food enterprises, providing stable, efficient, and safe nitrogen supply for the food packaging process.
1. Core features and advantages of LDH GAS Nitrogen Generator:
Stable, efficient, energy-saving
The Lida Heng Nitrogen Generator is developed based on the production needs of enterprises, integrating performance, energy consumption, and operation in multiple dimensions to enhance core competitiveness and help enterprises reduce costs and increase efficiency:
High-purity nitrogen, precise control: Utilizing advanced PSA (Pressure Swing Adsorption) nitrogen generation technology, the nitrogen purity can be flexibly adjusted within the range of 95% - 99.999%, meeting the requirements of different food packaging scenarios - whether it is the anti-oxidation packaging for baked foods or the gas-chilled preservation for meat and seafood, it can precisely match and avoid food spoilage caused by insufficient nitrogen purity.
Efficient gas production, low energy consumption: The equipment is equipped with high-performance adsorbents and an optimized air flow control system, producing nitrogen gas quickly. It can produce qualified nitrogen gas within 3-5 minutes after startup, without the need for long waiting times; compared to the traditional bottle nitrogen procurement model, the Lida Heng Nitrogen Generator can save 30%-50% of gas costs and avoid the safety risks and cumbersome procedures of gas cylinder transportation and storage.
Stable operation, low failure rate: Core components are all from industry-quality brands, such as high-precision valves, corrosion-resistant pipelines, and intelligent control systems. The equipment has a long continuous operation lifespan, with an average downtime-free time (MTBF) exceeding 8,000 hours; and it has functions such as automatic pressure compensation and adsorbent regeneration protection, ensuring stable gas production even under voltage fluctuations and environmental temperature changes.
Compact and flexible, easy installation and maintenance: The equipment has a compact structure, with a small area (only 1-2 square meters for the small model), which can be flexibly placed according to the workshop layout without the need for a dedicated machine room; daily maintenance only requires regular filter replacement and pressure checks, with simple operation and no need for professional technicians, reducing the enterprise's operation and maintenance costs.
2. Adaptation to the food packaging industry:
Safety, preservation, and compliance
Food packaging has extremely high requirements for the "safety", "preservation effect", and "production compliance" of nitrogen gas. The Lida Heng Nitrogen Generator is designed specifically to meet industry needs:
Food-grade safety standards, no pollution: The pipelines and containers in contact with nitrogen gas are made of 304 stainless steel, with smooth inner walls without dead corners, avoiding bacterial growth and residue; at the same time, it is equipped with multiple filtration systems (pre-dust removal, mid-stage oil removal, and post-sterilization), and the produced nitrogen gas has a cleanliness level up to food grade (dust particles ≤ 100 per liter, oil content ≤ 0.001 mg/m³), ensuring no safety hazards when in direct contact with food.
Precise gas-chilled preservation, extending food shelf life: For different preservation needs of food, the Lida Heng Nitrogen Generator can cooperate with packaging machines to achieve "nitrogen + carbon dioxide" or "pure nitrogen" gas-chilled schemes - for example, in the packaging of baked foods, high-purity nitrogen can isolate oxygen to prevent biscuits and bread from oxidizing and softening; in meat packaging, nitrogen and carbon dioxide mixed can inhibit bacterial reproduction, extending the shelf life of fresh meat by 2-3 times while maintaining the tenderness of the meat.
| Capacity |
Purity
(%) |
Model |
length(mm) |
Width(mm) |
Height
(mm) |
Weight(kg) |
Inlet size
(DN) |
Outlet size(DN) |
Buffer tank
volume(m³) |
| 5 |
99 |
LPN-5 |
1000 |
1000 |
1640 |
380 |
DN15 |
DN15 |
|
| 99.9 |
LPN-5 |
1000 |
1000 |
1640 |
380 |
DN15 |
DN15 |
|
| 99.99 |
LPN-5 |
1300 |
1100 |
1400 |
560 |
DN15 |
DN15 |
0.3 |
| 99.999 |
LPN-5 |
1300 |
1100 |
1400 |
560 |
DN15 |
DN15 |
0.3 |
| 20 |
99 |
LPN-20 |
1450 |
1300 |
1450 |
700 |
DN20 |
DN15 |
0.3 |
| 99.9 |
LPN-20 |
1500 |
1400 |
2030 |
900 |
DN25 |
DN20 |
0.5 |
| 99.99 |
LPN-20 |
1500 |
1500 |
1700 |
1000 |
DN25 |
DN15 |
0.5 |
| 99.999 |
LPN-20 |
1600 |
1450 |
1950 |
1400 |
DN25 |
DN15 |
0.5 |
| 50 |
99 |
LPN-50 |
1600 |
1400 |
2100 |
1100 |
DN25 |
DN20 |
0.5 |
| 99.9 |
LPN-50 |
1700 |
1500 |
2100 |
1300 |
DN25 |
DN15 |
0.5 |
| 99.99 |
LPN-50 |
1700 |
1550 |
2160 |
1500 |
DN40 |
DN25 |
0.5 |
| 99.999 |
LPN-50 |
2000 |
1800 |
2500 |
2300 |
DN40 |
DN40 |
0.5 |
| 100 |
99 |
LPN-100 |
1600 |
900 |
2230 |
1050 |
DN40 |
DN50 |
1.5 |
| 99.9 |
LPN-100 |
1800 |
1750 |
2250 |
1400 |
DN40 |
DN25 |
1.5 |
| 99.99 |
LPN-100 |
2100 |
1950 |
2250 |
2700 |
DN40 |
DN40 |
1 |
| 99.999 |
LPN-100 |
2200 |
1300 |
2900 |
3300 |
DN65 |
DN40 |
2 |
| 150 |
99 |
LPN-150 |
1800 |
1150 |
2200 |
1400 |
DN40 |
DN25 |
1.5 |
| 99.9 |
LPN-150 |
2100 |
1200 |
2250 |
2200 |
DN40 |
DN40 |
1.5 |
| 99.99 |
LPN-150 |
2200 |
1300 |
2700 |
3200 |
DN50 |
DN40 |
2 |
| 99.999 |
LPN-150 |
2200 |
1500 |
3100 |
4400 |
DN80 |
DN50 |
4 |
| 200 |
99 |
LPN-200 |
2000 |
1150 |
2300 |
1700 |
DN40 |
DN25 |
2 |
| 99.9 |
LPN-200 |
2100 |
1200 |
2500 |
2200 |
DN40 |
DN50 |
2 |
| 99.99 |
LPN-200 |
2200 |
1400 |
2850 |
4100 |
DN65 |
DN50 |
2.5 |
| 99.999 |
LPN-200 |
2200 |
1500 |
3000 |
4100 |
DN65 |
DN50 |
4 |
Compliance with industry requirements, facilitating production certification: The Lida Heng Nitrogen Generator has passed ISO9001 quality system certification and food contact material safety certification. During operation, there is no emission of waste gas or wastewater, meeting the environmental requirements of the food industry; at the same time, the equipment has a complete data recording function (such as nitrogen purity, pressure, and operation time), which can export data at any time, helping enterprises obtain HACCP, QS, etc. production qualification certifications. III. Function Upgrade: Intelligent, Convenient, and Humanized
Compared to traditional nitrogen generators, LDH GAS 's nitrogen generator has undergone multiple functional upgrades, better meeting the intelligent production needs of modern food enterprises:
Intelligent touch screen, visual operation: Equipped with a 7-inch color touch screen, it displays key parameters such as nitrogen purity, pressure, flow rate, and adsorbent lifespan in real time, making the data clear at a glance; it supports one-click parameter setting, such as setting the target purity, and the equipment automatically adjusts the adsorption cycle without manual intervention, reducing the error rate of operation.
Remote monitoring and fault warning: Some models support IoT functions. Through mobile phone APP or computer, the operation status of the equipment can be viewed remotely, and real-time fault warning information (such as text messages, APP push notifications) can be received for pressure abnormalities, non-compliance with purity standards, etc., facilitating enterprises to handle problems promptly and avoiding production line interruptions due to equipment downtime.
Energy-saving mode, demand-based gas production: Equipped with intelligent energy-saving algorithms, the equipment can automatically adjust the gas production load according to the nitrogen consumption of the packaging machine - when the packaging machine is in intermittent operation, the equipment automatically reduces the adsorption frequency to reduce energy consumption; when the consumption suddenly increases, it quickly increases the gas production efficiency to ensure uninterrupted nitrogen supply and avoid energy waste.
Emergency backup system, ensuring production continuity: Considering the production characteristics of food enterprises that "cannot stop", some models can be equipped with dual adsorption tower redundancy design. When one adsorption tower is undergoing regeneration, the other adsorption tower continues to produce gas to ensure uninterrupted nitrogen supply; at the same time, an emergency gas storage tank is provided, even if the equipment is briefly maintained, the storage tank can meet the short-term nitrogen demand, ensuring the normal operation of the production line.
LDHGAS psa nitrogen making machine process and equipment introduction
1. The technological process of nitrogen generator is briefly introduced
Air through the air filter to remove dust and mechanical impurities into the air compressor, compressed to the required pressure, after strict oil removal, water removal, dust removal and purification treatment, output clean compressed air, the purpose is to ensure the service life of the molecular sieve. At work, one pot adsorption, the other pot desorption, two sub work alternately. Clean air into the working adsorption tower, through molecular sieve oxygen, carbon dioxide and water absorption, flow to the outlet end of the gas is nitrogen and trace argon and oxygen. In this way, the two towers take turns to separate nitrogen and oxygen and continuously output nitrogen. The purity of nitrogen produced by psa is 95% to 99.999%.
The most reliable equipment
* Molecular sieve filling compaction, using a professional way to complete under a professional background, higher density, higher gas production efficiency.
* Optimized design, process and structure optimization to maximize its potential for higher reliability.
*LDH GAS's dedicated valve ensures 1,000,000 times of use, fail-safe switching and stable operation of the safety system.
* Can automatically record working time, working state, accumulated flow,
* More reasonable system design, smaller footprint, lower energy consumption
* Automatic operation, system, whole process can achieve unattended.
Which nitrogen generator should I choose?
Different parameters are essential for your choice of nitrogen generator
- How big is your consumption?
- Is your consumption variable?
- Which pressure is required?
- What purity/capacity is required?
- Do you already have a compressed air system?
Why choose LDH GAS?
- Be your own supplier, customized.
- Mobile and flexible sloutions
- Produce gas when and where you want
- Save your installation cost
- minimum maintence .fully automatic operation
- Only quality compenents are used.
IV. Working Principle and Operation Flow: Simple and Understandable, Clear at a Glance
LDH GAS 's nitrogen generator is based on PSA (Pressure Swing Adsorption) technology, achieving the separation of nitrogen from air through the "adsorption - regeneration" cycle. The specific process is as follows:
Air pre-treatment stage: Compressed air (provided by an air compressor) first enters the pre-filter to remove dust, moisture, and oil from the air, ensuring the air entering the adsorption tower is clean and avoiding contamination of the adsorbent;
Pressure swing adsorption nitrogen production stage: Clean air enters the dual adsorption tower (filled with high-quality carbon molecular sieves), under a certain pressure, the carbon molecular sieves preferentially adsorb oxygen, carbon dioxide, moisture, etc., while nitrogen passes through the adsorption tower and becomes qualified product nitrogen;
Nitrogen purification and storage stage: The produced nitrogen passes through the post-purification filter for further filtration to remove trace impurities, then enters the storage tank to ensure stable nitrogen pressure; at the same time, a purity detector monitors the nitrogen purity in real time. If the purity does not meet the standard, the equipment automatically discharges the gas and restarts nitrogen production;
Adsorbent regeneration stage: When one adsorption tower is saturated, the equipment automatically switches to another adsorption tower to continue producing nitrogen, while reducing the pressure of the saturated adsorption tower to release the adsorbed impurities and restore the adsorption capacity for the next round of nitrogen production;
Nitrogen supply stage: Nitrogen from the storage tank is regulated by a pressure stabilizing valve to the required pressure of the packaging machine, and continuously delivered to the packaging machine to meet the nitrogen demand for food packaging.
V. After-sales Guarantee: Professional, Timely, and Peace of Mind
LDH GAS always takes "customer production without worries" as its service philosophy, providing full-cycle after-sales guarantee to solve enterprises' concerns:
Free on-site installation and commissioning: After the equipment arrives, professional engineers conduct free site inspections, formulate installation plans based on the workshop layout, ensuring seamless connection of the equipment with air compressors, packaging machines, etc.; after installation, on-site commissioning is carried out until the nitrogen purity and pressure reach the standard, and one-on-one training is provided to the operators to ensure they master the operation and daily maintenance skills. National 24-hour response service: Establish a nationwide after-sales service network with over 20 service outlets. We promise to respond to after-sales requests within 24 hours - routine faults can be resolved through phone calls or video guidance; for on-site repairs, engineers in the surrounding areas will arrive within 4 hours, and in remote areas, within 48 hours. This minimizes equipment downtime to the greatest extent.
Long-term spare parts supply and maintenance plan: Provide long-term supply services for original factory spare parts. Common spare parts (such as filters, valves, and adsorbents) are well stocked. Orders will be shipped within 1-3 days. At the same time, we customize "annual maintenance plans" for customers, conducting regular on-site inspections of equipment operation status and replacing easily damaged parts in advance to prevent sudden failures.
Warranty period and lifetime technical support: Lida Heng's air nitrogen generators have a whole machine warranty of 1 year (core components such as adsorption towers and control systems have a warranty of 2 years). Faults not caused by human error during the warranty period will be repaired or replaced free of charge; even beyond the warranty period, we still provide lifetime technical consultation and maintenance services to ensure the long-term stable operation of the equipment.
Technical features:
1. Adopt diversified environmental protection refrigerating medium with independent intellectual property rights2. The cold box adopts special secondary foaming technology to achieve good thermal insulation effect3. The refrigeration system adopts internationally famous compressor, which is safe and durable, and the spare parts are conventional4. Compared with the traditional Stirling liquid nitrogen unit, it has the following advantages: low cost, no regular maintenance, high reliability and long service cycle.
LDH liquid nitrogen machine technical characteristics
1. Adopt diversified environmental protection refrigerating medium with independent intellectual property rights
2. The cold box adopts special secondary foaming technology to achieve good thermal insulation effect
3. The refrigeration system adopts internationally famous compressor, which is safe and durable, and the spare parts are conventional
4. Compared with the traditional Stirling liquid nitrogen unit, it has the following advantages: low cost, no regular maintenance, high reliability and long service cycle
The liquefaction efficiency is high
Invest in commercial compressors, heat exchangers and other equipment that are mature on the market
Lends itself to easy installation, high reliability, no maintenance, and long operating cycl.
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