Full complete system of PSA Nitrogen Generator Machine 3-2000Nm3/H operate automatically-Jiangsu Tongyue Gas System Co.,ltd.-nitrogen generators-air compressors

PSA Nitrogen Generator has many advantages, such as high purity, simple process, full automation, low operating cost and so on. And it is widely used in many industry, such as Food packing, Food storing, Electric & Electronic industry, Petrogas & Oil field, Chemicals & Petro-chemicals, Coal-mine, Metallurgy, Pharmacy, SMT, Fire-resistance, lab, Air driving, and so on.

Specifications:

Nitrogen generating machine uses air as raw material to produce N2 in high purity, which is convenient and stable. PSA Nitrogen generating machine

Technical index:

1) Nitrogen Capacity: 3 - 2000Nm3/h

2) Nitrogen purity: 95 - 99.9995%

3) Initial nitrogen pressure: 0.1 - 0.8Mpa (Customized available)

Principles:

It uses carbon molecular sieve as sorbent, produces nitrogen by making use of the PSA principle. Under certain pressure, carbon molecular sieve has different oxygen/nitrogen adsorption capacity, i. E. Much more oxygen adsorption capacity than nitrogen adsorption capacity. PLC controls pneumatic valve open/close to realize two towers alternate adsorption and desorption as per pressure change, carries out oxygen/nitrogen separation and produces nitrogen with desired purity.

Applications: 1. Metallurgy: For anneal protection, agglomeration protection, nitrogenizing, furnace washing and blowing, etc. Used in fields such as metal heating treatment, powder metallurgy, magnetic material, copper process, metallic mesh, galvanized wire, semiconductor, etc.

2. Chemical and new material industries: For chemical material gas, pipeline blowing, gas replacement, gas protection, product transport, etc. Used in fields such as chemical, urethane elastic fiber, rubber, plastic, tyre, polyurethane, biological technology, intermediate, etc.

3. Electronic industry: For encapsulation, agglomeration, anneal, deoxidization, storage of electronic products. Used in fields such as peak welding, circumfluence welding, crystal, piezoelectricity, electronic porcelain, electronic copper tape, battery, electronic alloy material, etc.

I, Nitrogen generation system

1. Compressed air system

Air compressor supply the raw material air for the nitrogen generator. The nitrogen making system need high quality,stable pressure and enough air consumption.Air compressor should use the reliable, maintenance easily,low noise,screw air compressor.

2. Pressure Swing Adsorption Nitrogen making system
Pressure swing adsorption (PSA) is an advanced gas separate technique,it is widely used in gas supply field in the world.

2 .1 Adsorbing material

Adsorbing material is the center part of PSA nitrogen generator,Normally use the the Carbon Molecular Sieve,it can adsorb the oxygen,CO2,water in the air,but can’t adsorb the nitrogen.

2.2 PSA principal

Because O2 and N2 these two gas molecule have diffusion rate difference on the molecule sieve surface,O2 smaller diameter can diffuse faster,most of them inlet micropore of CMS,the large diameter N2 diffuse slowly,less of them can inlet ,use this adsorption difference come true O2 and N2 separate.

2.3 PSA N2 making processing

(1) Inlet air:The air compressor press the air into transporting pipe,then use the compressed air clarification system to remove the water,oil,dust and so on,reach to air buffer tank,then pass through air buffer tank into two adsorption tower.
(2) Adsorption: When air inlet adsorption tower,during the pressure function,O2 and CO2 be adsorbed quickly.Formed N2 near the outlet position.
(3) Air outlet :When the adsorption process working in the best status(Adsorption N2:O2 is the smallest),open the outlet valve,transport the N2 into N2 buffer tank.
(4) Average pressure:After finished exhaust,rest some N2 in the tower,so let it into another tower adsorb again with new air.This process is finished when the pressure of two tower is the same,so called average pressure.
(5) Exhaust :After average pressure finished,need to releasing the air which adsorb by CMS to be ready for next adsorption,the programme will open the air releasing valve automatically,let the pressure in the tower back to the original status,meanwhile release the O2,CO2,so than the CMS can adsorb new air again.
(6) These two tower exchange work can got N2 purity 99.9 %

3. Fully intelligent, automated, easier to operate
Microcomputer control and (industrial computer system) touch screen control are built in the machine. From the microcomputer touch screen, we can understand the nitrogen generator as follows:
(1) Real-time working condition, total running time, working process and opening and closing statement of the valve.

(2) When operating, just need to turn on and off the machine, set the parameters and view the system fault information through the touch screen.
It truly realizes the unattended duty, intelligent and automated operation of the equipment. It can function as the real-time monitoring equipment of the user’s control room. If required, we can monitor distantly parameters such as the flow of finished nitrogen, purity, pressure in the user’s DCS system.

Main parts of nitrogen generator

Project	Type	Quantity	Remark
PSA adsorption tower	Professional design	2pieces/10kg	Special pressure vessel manufacturer
Carbon Molecular Sieve	MSC-3KT-172	3500kg	Takeda Japan
Vortex airflow distributor	Professional design	2 pieces	Technical Carbotech from Germany
Self complement compact device	Professional design	2sets	Jiangyin Tongyue
single unit processing part	/	1 set	SMC-Japan
Sample pressure reduce valve	/	1 piece	SMC-Japan
Direct current 24V power	/	1 set	Taiwan-Mingwei
Pneumatic valves Pneumatic valves	DN100	5 pieces	Burkert Germany Burkert Germany
	DN50	4 pieces
	DN20	1 pieces
Magnetic valve	4V210-24V	10 pieces	Taiwan Airtac
Metal flow meter	LZZ-50	1 piece	Changzhou Shuanghuan
Control system	TPC7062K	1set	(color touch screen )Kunlun Tongtai
Muffler	TY-500X	1 set	Jiangyin Tongyue
Pipe valve system	bprofessional produce	1 set	Jiangyin Tongyue
PLC controller	S7-200	1 set	Siemens Germany
Nitrogen analyzer	P860-4N	1 set	Shanghai Changai

R & D Achievements obtained:
The enterprise attaches great importance to technological innovation and intellectual property protection work. Up to now, there have been a total of 9 patents declared, 7 of which have been authorized.

serial number	Patent No.	Patent No.( Accept No.)	patent families
1	PSA highly efficient starting device	Patent No.:ZL 2010 2 0139342.9	utility model
2	Automatic control system of nitrogen generator with frequency conversion	Patent No.:ZL 2012 2 0408277.4	utility model
3	Exhaust gas recycling and utilization device	Patent No.:ZL 2013 2 0867590.9	utility model
4	Automatic control device for nitrogen purity	Patent No.:ZL 2013 2 0867632.9	utility model
5	PSA constant pressure constant regeneration system	Patent No.:ZL 2010 2 0139343.3	utility model
6	PSA cyclone umbrella type honeycomb air flow diffusion device	Patent No.:ZL 2013 2 0139344.8	utility model
7	PSA low decibel silencer	Patent No.:ZL 2013 209 39345.2	utility model
8	Top gathering fountain type gas collecting device	Patent No.:ZL 2010 2 0569506.1	utility model
9	Dynamic cylinder pressing device	Patent No.:ZL 2011 2 0015073.X	utility model

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