Device and method for preparing oxygen-enriched air product
An oxygen-enriched air and air technology, applied in refrigeration and liquefaction, lighting and heating equipment, liquefaction, etc., can solve the problems of inconvenient control of oxygen-enriched purity, increased investment costs, and inconvenient use, achieving simple structure, simple process, The effect of low energy consumption
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Embodiment 1
[0042] refer to figure 1 (The arrow direction in the figure represents the flow direction of gas or liquid), the embodiment of the present invention provides a kind of preparation device of oxygen-enriched air product, comprises air compressor 107, precooling equipment 110, molecular sieve adsorber 108, main heat exchange Device 101, rectification tower 102 and expander 103, air compressor 107, pre-cooling equipment 110 and molecular sieve adsorber 108 are connected in sequence, air compressor 107 is used to compress the raw material air to 0.4-0.6MPa, pre-cooling equipment 110 is used After the compressed raw air is pre-cooled to 8-10°C, the molecular sieve adsorber 108 is used to purify the pre-cooled air to remove impurities such as moisture, carbon dioxide and acetylene in the raw air, and the main heat exchanger 101 is used to After cooling the purified raw air to the saturation temperature, the rectification tower 102 is used to rectify a part of the cooled raw air to ob...
Embodiment 2
[0048] refer to figure 2 , The preparation device for oxygen-enriched air products provided in this example is an improvement made on the basis of Example 1, and the content not mentioned in this example can refer to the content of Example 1.
[0049] The preparation device of the oxygen-enriched air product provided in this embodiment is also provided with a subcooler 104, and the subcooler 104 is respectively connected with the bottom of the expander 103, the rectifying tower 102, and the condensing evaporator 105. At the same time, the subcooler A throttle valve 109 for throttling is provided between 104 and condensing evaporator 105 . The subcooler 104 is used to cool the obtained oxygen-enriched liquefied air, and recover the cooling capacity of the low-temperature return gas, which is the return flow of oxygen-enriched air and expanded raw material air.
[0050] The oxygen-enriched liquefied air obtained by rectification at the bottom of the rectification tower 102 is ...
Embodiment 3
[0053] refer to image 3 , the embodiment of the present invention provides a kind of preparation method of oxygen-enriched air product, and this method comprises the following steps:
[0054] Step S301: compressing, precooling and purifying the first raw material air and the second raw material air.
[0055] When producing oxygen-enriched air products, the raw air first enters the air compressor for compression, so that the pressure of the raw air is kept within 0.4-0.6 MPa; after the raw air is compressed, the pre-cooling equipment is introduced to pre-cool the raw air to 8-10 ℃, after pre-cooling the raw air, introduce a molecular sieve adsorber to remove moisture, carbon dioxide, acetylene and other substances in the raw air. The pre-cooling equipment can be in the form of a pre-cooler or an air cooling tower plus a water cooling tower; The device removes moisture, carbon dioxide, acetylene and other substances in the raw material air. In order to ensure better removal ef...
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