Energy-saving VPSA oxygen production method and equipment
A technology of oxygen production equipment and oxygen production method, which is applied in the direction of separation method, oxygen preparation, chemical instrument and method, etc. It can solve the problems of large power consumption, high energy consumption, and increased useless work, and achieve the effect of reducing energy consumption in operation
Pending Publication Date: 2022-05-13
KUNSHAN OXYTON GAS EQUIP
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Problems solved by technology
According to the commonly used VPSA (VSA) VPSA oxygen production process, there will be a problem of high energy consumption: the motor power of the blower must be configured according to the shaft power required by the blower at the high pressure point. Similarly, the motor power of the vacuum pump must also be configured according to the vacuum pump at the low negative pressure point. The required shaft power configuration is the maximum value of the shaft power in the cycle operation process. In this way, the motors configured for the blower and the vacuum pump have the situation of "big horses and small carts" most of the time during the cycle operation process, which is useless. increase, high power consumption
Method used
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Embodiment
[0030] Embodiment: a kind of energy-saving type VPSA oxygen production method comprises the steps:
[0031] Boost adsorption: Two groups of adsorption towers are connected in parallel and run at the same time. The two groups of adsorption towers are respectively equipped with blowers. The pressure rises from normal pressure to high positive pressure, and then air is sent to another adsorption tower in the group to make the internal pressure rise from normal pressure to high positive pressure. The blower in this group circulates air to the two adsorption towers in turn; the blowers of the two groups of adsorption towers are connected in the first motor, and the sum of the shaft power of the two blowers matches the power of the first motor during the cycle operation;
[0032] Pressure-reducing desorption: Two groups of adsorption towers are connected in parallel and run at the same time. The two groups of adsorption towers are respectively equipped with vacuum pumps. The pressu...
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The invention discloses an energy-saving VPSA (Vacuum Pressure Swing Adsorption) oxygen production method and equipment. The energy-saving VPSA oxygen production equipment comprises boost adsorption and depressurization desorption, two adsorption tower groups run in parallel, the two adsorption tower groups are respectively provided with air blowers, the air blowers of the two adsorption tower groups are connected to a first motor, and the sum of shaft power of the two air blowers is matched with the power of the first motor; the two adsorption tower groups are respectively provided with a vacuum pump; the vacuum pumps of the two groups of adsorption towers are simultaneously connected with the same motor, and the shaft power sum of the two vacuum pumps is matched with the power of the motor; and pressure-boosting adsorption and pressure-reducing desorption are carried out simultaneously. According to the energy-saving VPSA oxygen production method and equipment provided by the invention, the shaft power of the air blower is properly matched with the motor power, the shaft power of the vacuum pump is properly matched with the motor power, and compared with conventional VPSA oxygen production equipment, the operation energy consumption can be reduced by 15-20%.
Description
technical field [0001] The invention belongs to the technical field of oxygen production, in particular to an energy-saving VPSA (VSA) oxygen production equipment. Background technique [0002] The methods of producing oxygen mainly include: cryogenic oxygen production, VPSA (PSA, VPSA, VSA) oxygen production, membrane separation oxygen production, water electrolysis oxygen production and chemical oxygen production. [0003] With the development of industry, the demand for oxygen is increasing. VPSA (VSA) oxygen production is a process for producing oxygen, and its equipment is gradually becoming larger, and its operating power consumption has also been paid more and more attention. [0004] VPSA oxygen production process, the pressure in each adsorption tower is from normal pressure to high pressure (set value, about 0.05MPa), then back to normal pressure, and then to low negative pressure (set value, about -0.05MPa) cyclical process. Normal pressure to high pressure is ...
Claims
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IPC IPC(8): B01D53/053C01B13/02
CPCB01D53/053C01B13/0259Y02P20/10
Inventor 颜小建
Owner KUNSHAN OXYTON GAS EQUIP