Air Separation Unit Nitrogen Generator China for Food Packaging

• Customization: Available
• Application Fields: Food
• Certification: CCC, CE, ISO, RoHS, UR
• Model NO.: LPN-50I
• Condition: New
• Noise Level: Low
• Parts: Gas Tank
• Purpose: Gas Manufacturing
• Usage: Nitrogen
• Voltage: 380V
• Warranty: 1year
• Type: Psa
• Purity: 99-99.999%
• Machine Size: Small
• Transport Package: Wooden Case/Pallet at Export Standard
• Specification: 1000*1200*1500
• Trademark: LDH
• Origin: Beijing China
• HS Code: 841960
• Production Capacity: 500
• Package Size: 580.00cm * 340.00cm * 250.00cm
• Package Gross Weight: 3590.000kg

Product Description

High purity 99.99% food packaging petrochemical nitrogen generator

PSA Nitrogen Generator  full name: Pressure Swing Adsorption (PSA).

PSA is a new gas separation technology, which has been developed rapidly in foreign countries since the late 1960s and early 1970s. Its principle is to separate the gas mixture by the difference of the "adsorption" performance of different gas molecules by molecular sieve. It takes air as raw material.The nitrogen and oxygen in the air are separated by the selective adsorption of nitrogen and oxygen with a high efficiency and high selection of solid adsorbent.
High purity 99.99% food packaging petrochemical nitrogen generator

 

Currently, carbon molecular sieves (CMS) and zeolite molecular sieves (ZMS) are widely used in nitrogen and oxygen generation. Molecular sieves separate oxygen and nitrogen primarily based on the differing diffusion rates of these two gases on the sieve surface.

 

CMS is a carbon-based adsorbent that exhibits characteristics of both activated carbon and molecular sieves. It consists of tiny micropores with sizes ranging from 0.3 nm to 1 nm. Gases with smaller molecular diameters (e.g., oxygen) diffuse faster and more extensively into the CMS solid phase, leaving nitrogen enriched in the gas phase. After a certain period, the CMS reaches adsorption equilibrium for oxygen. Leveraging CMS's characteristic of adsorbing different gases differently under varying pressures, the system reduces pressure to desorb the adsorbed oxygen from the CMS-a process called regeneration. Pressure swing adsorption (PSA) systems typically use two parallel towers, which alternate between pressurized adsorption and depressurized regeneration to produce a continuous nitrogen flow.

 

The method that uses air as feedstock, CMS as the adsorbent, and applies the PSA principle to separate oxygen and nitrogen (via CMS's selective adsorption of the two gases) is commonly referred to as PSA nitrogen generation. This nitrogen generation technology developed rapidly in the 1970s.

 

Compared with traditional nitrogen generation methods, it offers distinct advantages: simple process, high automation, rapid gas production (15-30 minutes), low energy consumption, wide adjustability of product purity to meet user requirements, easy operation and maintenance, low operating costs, and good equipment adaptability. It is highly competitive in nitrogen generation equipment with a capacity of 1,000 Nm³/h or less. As a result, PSA has gained increasing popularity among small and medium-sized nitrogen users and has become their preferred choice.

 

Product Parameters

 

Capacity	Purity	Model	length (mm)	Width (mm)	Height	Weight(kg)	Inlet size(DN)	Outlet size(DN)	Buffer tank volume(m³)
5	99	LPN-5H	1000	1000	1640	380	DN15	DN15
	99.9	LPN-5I	1000	1000	1640	380	DN15	DN15
	99.99	LPN-5J	1300	1100	1400	560	DN15	DN15	0.3
	99.999	LPN-5K	1300	1100	1400	560	DN15	DN15	0.3
20	99	LPN-20H	1450	1300	1450	700	DN20	DN15	0.3
	99.9	LPN-20I	1500	1400	2030	900	DN25	DN20	0.5
	99.99	LPN-20J	1500	1500	1700	1000	DN25	DN15	0.5
	99.999	LPN-20K	1600	1450	1950	1400	DN25	DN15	0.5
50	99	LPN-50H	1600	1400	2100	1100	DN25	DN20	0.5
	99.9	LPN-50I	1700	1500	2100	1300	DN25	DN15	0.5
	99.99	LPN-50J	1700	1550	2160	1500	DN40	DN25	0.5
	99.999	LPN-50K	2000	1800	2500	2300	DN40	DN40	0.5
100	99	LPN-100H	1600	900	2230	1050	DN40	DN50	1.5
	99.9	LPN-1001	1800	1750	2250	1400	DN40	DN25	1.5
	99.99	LPN-100J	2100	1950	2250	2700	DN40	DN40	1
	99.999	LPN-100K	2200	1300	2900	3300	DN65	DN40	2
150	99	LPN-150H	1800	1150	2200	1400	DN40	DN25	1.5
	99.9	LPN-1501	2100	1200	2250	2200	DN40	DN40	1.5
	99.99	LPN-150J	2200	1300	2700	3200	DN50	DN40	2
	99.999	LPN-150K	2200	1500	3100	4400	DN80	DN50	4
200	99	LPN-200H	2000	1150	2300	1700	DN40	DN25	2
	99.9	LPN-200I	2100	1200	2500	2200	DN40	DN50	2
	99.99	LPN-200J	2200	1400	2850	4100	DN65	DN50	2.5
	99.999	LPN-200K	2200	1500	3000	4100	DN65	DN50	4
300	99	LPN-300H	2200	1250	2620	2500	50	40	3
	99.9	LPN-300I	2100	1200	2500	2240	50	40	2.5
	99.99	LPN-300J	2200	1500	3400	4200	80	50	3
	99.999	LPN-300K	2200	1500	3400	4260	80	80	5
400	99	LPN-400H	2200	1300	2900	3350	65	40	4
	99.9	LPN-400I	2200	1500	3050	4200	65	50	5
	99.99	LPN-400J	2200	1500	3400	4300	80	80	6
500	99	LPN-500H	2200	1400	2850	4100	65	50	5
	99.9	LPN-500I	2200	1500	3400	4200	80	50	6
	99.99	LPN-500J	2200	1500	3400	4200	80	80	8
800	99	LPN-800H	2200	1500	3400	4300	80	80	10
	99.9	LPN-800I	2200	1500	3400	4200	80	80	10
1200	99	LPN-1200H	2200	1500	3400	4300	80	80	12

Why choose PSA nitrogen generator ?

High nitrogen purity: PSA nitrogen generators produce ultra-high purity nitrogen, up to 99.9995%, using carbon molecular sieve technology, a level unattainable by membrane systems. They are available with or without internal compressors.

Low operating costs: Replacing outdated air separation plants with PSA nitrogen generators can reduce production costs by more than 50%. The cost of nitrogen generated is significantly lower than that of bottled or liquefied nitrogen.

Environmental benefits: Generating nitrogen gas is a sustainable, environmentally friendly, and energy-efficient method. Compared to cryogenic air separation and the transportation of liquid nitrogen, PSA generators consume less energy and produce fewer greenhouse gases.

Process flow and equipment introduction of PSA nitrogen making machine

PSA Nitrogen Generator: Technological Process Brief

Air first passes through an air filter to remove dust and mechanical impurities, then enters an air compressor. After being compressed to the required pressure, it undergoes rigorous oil, water, and dust removal for purification-producing clean compressed air to ensure the service life of molecular sieve adsorption towers.

There are two adsorption towers filled with CMS: one operates in adsorption mode, while the other undergoes depressurization and desorption. Clean air enters the operating tower; oxygen, carbon dioxide, and water are adsorbed by the CMS, leaving nitrogen (with trace argon and oxygen) at the outlet. The desorbing tower releases adsorbed oxygen, carbon dioxide, and water from CMS pores to the atmosphere. The two towers alternate to complete oxygen-nitrogen separation and output nitrogen continuously (see Fig. 2).

PSA-generated nitrogen has a purity of 95%-99.9%. For higher purity, additional nitrogen purification equipment is required: 95%-99.9% nitrogen from the PSA unit is fed into the purification system, with a precise amount of hydrogen added via a flowmeter. Hydrogen reacts catalytically with trace oxygen in the system's deoxidation tower; the product is then cooled by a condenser to remove water (via a water separator), followed by deep drying using two alternating adsorption drying towers (one for moisture adsorption, the other for heated desorption and drainage). This yields high-purity nitrogen (up to 99.9995%).

Currently, the maximum capacity of domestic PSA nitrogen generation equipment in China is 3,000 Nm³/h.

 

 

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

 

After Sales Service

 

LDH GAS provides services to maximize your benefits. For convenience, we offer a fixed-price service agreement based on operating or calendar time. All customers can contact us anytime, and we are ready to assist.

 

1. Consultancy
   Self-help guidance, experience sharing and personalized support. For plant operation questions or troubleshooting needs, we provide advice via phone or in writing. Direct communication with you is key to long-term win-win cooperation.
    
2. Commissioning
   Systematic process from final acceptance of installation to approval of normal operation and guaranteed functions. Items include extensive operational tests, professional filling of adsorbents and catalysts, proper start-up, optimal setting of operating parameters and inspection of all safety functions. We also provide online remote training for your operators on plant functions and operation.
    
3. Spare Parts Service
   Global, fast and cost-effective spare parts supply throughout your plant's lifecycle. Distinct labels on our supplied plant components allow clear identification of your required spare parts. We provide long-lasting, cost-efficient products. For plant modifications or expansions, we offer optimal, cost-effective solutions tailored to your needs.
    
4. Maintenance/Inspections
   Regular inspection and maintenance ensures continuous operation, reduces damage and prevents unexpected breakdowns. During maintenance/inspection, we check the function and condition of all relevant components, replace defective, aged or worn parts, and optimally adjust the plant to current operating conditions. Based on plant size and work scope, our services also include detailed inspection scheduling and contractor coordination/supervision. We provide maintenance documents (e.g., reports) and spare part recommendations, and align our schedules with your needs.
    
5. Training
   Expertise training for your staff. We provide expert-led specialized training in plant operation, maintenance/repair, electrical measurement and control equipment, or process engineering.