Variable-pressure adsorption oxygenerating device

Abstract

The invention supplies pressure altering adsorbing oxygen generating equipment that set float air receiver used as buffer storing jar for oxygen product between outlet of fan and oxygen generating adsorbing tower, setting filling material in pressure equal buffer jar to avoid gas mixing, and adopts three or more pressure altering absorbing tower and set normal pressure air intake process controlling valve. The cost and power consumption would decrease over 23% by using the invention.

Description

technical field [0001] The invention belongs to the field of oxygen production by air separation, in particular to a process device for producing oxygen by adopting a pressure swing adsorption process. Background technique [0002] The current pressure swing adsorption oxygen production device is usually composed of air blower, pressure swing adsorption oxygen production tower, vacuum pump, pressure equalization buffer tank and product gas storage buffer tank, oil pressure program-controlled valve and related pipelines. The computer controls the oil pressure valve through the program. According to the design requirements, the timer switch realizes the purpose of separating the product oxygen from the air. The specific device process is shown in Figure 2 of the specification. [0003] Oxygen is produced by the pressure swing adsorption separation process, and nitrogen is usually adsorbed by an adsorbent at an absolute pressure of 0.12-0.15Mpa to obtain separated oxygen in th...

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Problems solved by technology

[0008] E. Since the two adsorption towers cycle through the same cycle to produce oxygen in different sequences, the load of the vacuum pump and air blower as supporting equipment always fluctuates between the maximum and the minimum. In order to meet the process requirements, the equipment is usually The selection of specifications and capabilities is relatively rich, which also causes unnecessary waste of investment;

[0009] F, because the flow of oxygen in the initial and final stages of adsorption and separation oxygen production fluctuates, especially when the oxygen required by the oxygen device also fluctuates periodically, it will be difficult for the constant volume oxygen product storage buffer equipment to make the pressure and The fluctuation of flow is stabilized, especially when the oxygen production or oxygen system fails, the oxygen production or oxygen consumption fluctuates greatly, or even a short-term shutdown of a certain system, the normal operation system will also be forced to fluctuate greatly or even shut down , which should obviously be avoided

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