10L Per Hour PSA Nitrogen Generator
Product Application
1. Brief Introduction
According to the technical requirements of your company, Zhoushan Willman Machinery Technology Co., Ltd. (hereinafter referred to as Willman Machinery) has prepared the technical scheme of liquid nitrogen machine. The terms and units used and implemented in the technical scheme are in accordance with the relevant standards of the People's Republic of China. Willman Machinery is responsible for the authenticity and rigor of this technical solution.
According to user requirements, liquid nitrogen equipment design requirements are as follows:
2. 1 Product Design Parameter
Product nitrogen purity: 99.9%
Product nitrogen dew point ≤-40℃
Liquid nitrogen yield: 10 L/h
2.2 Functional Requirements for Product Design
1. nitrogen equipment adopts pressure swing adsorption process.
2. nitrogen equipment can have RS485 communication interface, equipment parameters and running status can communicate with DCS.
3. nitrogen equipment with unqualified oxygen sound and light alarm function, nitrogen gas for a long time unqualified automatic shutdown protection function.
4. Liquid nitrogen equipment adopts cryogenic mixed working medium throttling refrigerator as cold source, compact structure, can continuously and conveniently supply liquid nitrogen, can be used as the supply source of small amount of liquid nitrogen in the region.
Schematic diagram of simple process of PAS nitrogen production equipment
4. 1 Nitrogen specifications of finished products
|
Mode |
Item |
Value |
Item |
Value |
|
WMN-10L |
Nitrogen gas flow |
12Nm3/h |
Nitrogen gas purity |
99.9% |
|
The nitrogen pressure |
0.1-0.4 mpa |
Nitrogen gas dew point |
≤-40℃ |
|
|
Note: All pressures in this paper are gauge pressure values unless otherwise specified. Flow unit "Nm3/h" means the flow unit at 20℃ , 0. 101MPa(absolute pressure); |
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4.2 Equipment boundary area
This set of pressure swing adsorption nitrogen production device consist of air source system, air filtration system, oxygen and separation and nitrogen buffer system. In this technical scheme, pressure swing adsorption nitrogen production equipment within the composition range of the whole device adopts skid mounted; From the outlet of air compressor to the outlet of nitrogen storage tank, all equipment, connecting pipes, flanges and other materials in a single skid block are included.
4.3 Public Works
4.3. 1 Water, electricity, compressed air and equipment installation and operation environment required by the user must meet the following requirements:
1) Power supply conditions
|
Category |
Value |
Remarks |
|
380V/50Hz |
7.5KW |
crew air compressor |
|
220 V/50Hz |
0. 15KW |
|
2) Ambient air conditions
| Ambient Air Quality | |||
| Oxygen content | 20. 1%(V) | Temperature | ≤45℃ |
| Particle size | ≤5μm | oil content | ≤3mg/m3 |
| CO2 | ≤350ppm | C2H2 | ≤0.5ppm |
| CnHm | ≤30ppm | ∑(NOx+SO2+HCl+Cl2) | ≤8ppm |
3)Equipment installation and operation environment
|
Ambient temperature： |
2℃~40℃ |
|
Relative humidity： |
≤80% |
|
Atmospheric pressure： |
80kPa~106kPa |
|
Dry, clean, well ventilated, no corrosive substances around. |
|
4.3.2 Installation site requirements
1) The equipment shall be stored in a dry, clean, well-ventilated warehouse with no corrosive substances around. For short-term open storage and transportation should be covered with rain cloth, and the equipment should not be in direct contact with the ground.
2)Indoor installation site environmental temperature is 2 ~ 40℃ , relative humidity ≤ 80%.
3) Installation requirements: Crane or forklift is easy to reach and install. The ground is flat, and the distance between equipment and wall or other equipment shall not be less than 800mm; The sewage outlet must be connected to the outside of the device with a pipe.
4.3.3 Site installation
1) The buyer shall install according to the installation atlas provided by the supplier.
2) The purchaser shall be responsible for unloading the equipment and placing each section of the equipment in a predetermined position.
3) The buyer shall provide labor connection and assembly equipment to prepare for start-up.
4)The buyer shall provide labor services and materials by contacting various
necessary facilities (electricity, gas and water).
5. Liquid nitrogen equipment mainly introduced:
Nitrogen liquefier is a cryogenic mixing medium saving flow refrigerator driven by a single compressor with pre-cooling to achieve nitrogen liquefaction (- 180℃). Cryogenic mixed refrigerant throttling refrigerant is based on the regenerative multiple mixed refrigerant throttling refrigeration cycle, from the ambient temperature to the target refrigeration temperature, the selection of high, medium and low boiling point pure components composed of multiple mixed working medium, to achieve the effective cooling temperature of each boiling point components relay matching, is a kind of refrigeration machine can efficiently achieve -40~ 196℃ temperature range.
Main technical parameters:
Note: Liquid nitrogen yield: 10L/h
|
Parameter |
Size | 1650×1000×2000 mm |
| Weight | 700 kg | |
| Refrigerator | Mixed refrigerant throttling refrigerator | |
| Cooling type | Water cooling | |
| Cooling time | Hot cooling time:﹤ 90minCold cooling time﹤30min | |
| Power | 8.5kw | |
| Voltage | AC308V 50HZ 3phase | |
| Environmental requirements | Temp.:≤ 300CAltitude : ≤ 1000m | |
| Nitrogen gas purity | ≥99.9% | |
| The nitrogen pressure | 0.1-0.4Mpa Adjustable | |
| Nitrogen gas dew point | ≤-400C | |
| Nitrogen gas flow | ≥12Nm3/h |
6.Product quality assurance
6. 1 Nitrogen product quality assurance commitment for psa nitrogen production ：
| Name | The equipment parameters |
| Nitrogen gas flow | ≥12Nm3/h |
| Nitrogen gas purity | ≥99.9% |
| The nitrogen pressure | 0.1-0.4Mpa Adjustable |
| Nitrogen gas dew point | ≤-400C |
| Continuous operation of equipment | 8500hoursce |
Service life of key component
1) Adsorbent (molecular sieve) service life ≥ 10 years (under normal operating conditions)
2) Pneumatic valve opening time ≤0.2 seconds , service life ≥ 1.5 million times
6.2 Liquid nitrogen product quality assurance commitment：
|
Name |
The equipment parameters |
|
Liquid nitrogen production |
10L/Hour |
|
Liquid nitrogen purity |
≥99.9% |
|
Nitrogen flow |
≥12Nm3/h |
|
Nitrogen purity |
≥99.9% |
|
Nitrogen pressure |
0.1-0.4Mpa Adjustable |
|
Nitrogen dew point |
≤-400C |
|
The equipment runs |
8500 hours continuously |
