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System capable of realizing high-precision preparation of nitrogen with different concentrations

A preparation system, high-precision technology, applied in nitrogen compounds, nitrogen purification/separation, specific gas purification/separation, etc., can solve the problems of insufficient nitrogen concentration and inability to realize nitrogen preparation, etc.

Active Publication Date: 2021-01-22
宁波岚新空分设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the one hand, the existing nitrogen generators do not have a good grasp of the nitrogen concentration, and secondly, they cannot realize the preparation of nitrogen with different concentration levels

Method used

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  • System capable of realizing high-precision preparation of nitrogen with different concentrations

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A nitrogen preparation system capable of achieving high precision and different concentrations, including a gas buffer tank 2, a first adsorption tower 3, a second adsorption tower 4, a control cabinet 7, a nitrogen buffer tank 10, an unqualified discharge area 12, and a first gas use point 13. The second gas point 14, the third gas point 15 and the fourth gas point 16, the gas buffer tank 2 is in gas communication with the first adsorption tower 3 and the second adsorption tower 4 through the gas pipeline 8; The gas buffer tank 2 reduces air flow pulsation and acts as a buffer; thereby reducing system pressure fluctuations, allowing compressed air to pass through the compressed air purification components smoothly, so as to fully remove oil and water impurities, and reduce the subsequent first adsorption tower 3 and second adsorption tower 4; At the same time, when the adsorption tower is switched over, it also provides the PSA oxygen and nitrogen separation device with...

Embodiment 2

[0025] The control cabinet 7 is electrically controlled connected with the control valves on the air intake pipeline 1, the gas transmission pipeline 8, the nitrogen delivery pipeline 9, the nitrogen gas outlet pipeline 11 and the gas pipeline 17 respectively through the electric control circuit 18. 7 is equipped with a PLC control system, and the surface of the control cabinet 7 is embedded with a display screen 19, a button A5, a button B6, a button C20, a button D21 and a main switch 22; the gas pipeline 17 is equipped with a flow meter , and the flowmeter is electrically connected to the control cabinet 7 .

[0026] Button A5, button B6, button C20 and button D21 respectively correspond to the joint control of the fourth control valve C, the fourth control valve D, the fourth control valve E and the fourth control valve F; The nitrogen concentrations of the second gas use point 14, the third gas use point 15 and the fourth gas use point 16 are 99%, 99.5%, 99.9% and 99.99% ...

Embodiment 3

[0028] The air inlet of the gas buffer tank 2 is connected with an air inlet pipeline 1 , and a first control valve is installed on the air inlet pipeline 1 , and the first control valve is located at the bottom of the gas buffer tank 2 .

[0029] The gas pipeline 8 is equipped with a second control valve A, a second control valve B and a second control valve C, the second control valve A is located at the gas outlet end of the gas buffer tank 2, the second control valve B and the second control valve C are located at the inlet ends of the first adsorption tower 3 and the second adsorption tower 4 respectively.

[0030] A third control valve A, a third control valve B and a third control valve C are installed on the nitrogen delivery line 9, and the third control valve A and the third control valve B are located in the first adsorption tower 3 and the second adsorption tower 3 respectively. At the outlet end of the adsorption tower 4 , the third control valve C is located at t...

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Abstract

The invention discloses a system capable of realizing high-precision preparation of nitrogen with different concentrations. The system comprises a gas buffer tank, a first adsorption tower and a second adsorption tower. The gas buffer tank is respectively in gas communication with the first adsorption tower and the second adsorption tower through gas transmission pipelines; the gas outlet ends ofthe first adsorption tower and the second adsorption tower are connected with the gas inlet end of a nitrogen buffer tank through a nitrogen conveying pipeline, and the gas outlet end of the nitrogenbuffer tank is in gas communication with an unqualified discharge area, a first gas using point, a second gas using point, a third gas using point and a fourth gas using point through a nitrogen outlet pipeline and a gas using pipeline respectively; a control cabinet is in electric control connection with control valves on an air inlet pipeline, a gas conveying pipeline, a nitrogen conveying pipeline, a nitrogen outlet pipeline and a gas using pipeline through electric control lines, a PLC control system is installed in the control cabinet, and a display screen, a key A, a key B, a key C, a key D and a main switch are embedded in the surface of the control cabinet. The system can realize preparation of nitrogen with different concentrations.

Description

technical field [0001] The invention relates to the technical field of nitrogen gas preparation, in particular to a high-precision nitrogen gas preparation system with different concentrations. Background technique [0002] The nitrogen generator is based on the principle of pressure swing adsorption, using high-quality carbon molecular sieve as the adsorbent, and producing nitrogen from the air under a certain pressure. The purified and dried compressed air is subjected to pressure adsorption and decompression desorption in the adsorber. Due to the aerodynamic effect, the diffusion rate of oxygen in the micropores of carbon molecular sieve is much higher than that of nitrogen, oxygen is preferentially adsorbed by carbon molecular sieve, and nitrogen is enriched in the gas phase to form finished nitrogen gas. After decompression to normal pressure, the adsorbent desorbs the adsorbed oxygen and other impurities to realize regeneration. Generally, two adsorption towers are s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/04
CPCC01B21/0461C01B21/0472C01B2210/0017C01B2210/002C01B2210/0045
Inventor 顾飞龙汪凌颉童丽
Owner 宁波岚新空分设备科技有限公司