CN219002529U - Energy-saving pressure swing adsorption equipment - Google Patents
Energy-saving pressure swing adsorption equipment Download PDFInfo
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- CN219002529U CN219002529U CN202222064782.8U CN202222064782U CN219002529U CN 219002529 U CN219002529 U CN 219002529U CN 202222064782 U CN202222064782 U CN 202222064782U CN 219002529 U CN219002529 U CN 219002529U
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Abstract
The utility model relates to the technical field of air separation equipment, in particular to energy-saving type variable-pressure adsorption equipment, which comprises an air compressor, an air storage tank, an adsorption tower and an air storage tank which are sequentially connected through pipelines, wherein an air purification device is arranged between the air storage tank and the air compressor, the air inlet end of the air storage tank is communicated with the air outlet end of the air purification device, the air outlet end of the air compressor is communicated with the air inlet end of the air purification device, a drying device for dehumidifying and drying the entering air is arranged between the air storage tank and the adsorption tower, the adsorption tower is also communicated with a tail gas collecting tank through an exhaust pipeline, the tail gas collecting tank is communicated with the air storage tank through a first backflow pipeline, a backflow device is arranged on the air storage tank, and an air outlet pipeline is arranged on one side of the air storage tank.
Description
Technical Field
The utility model relates to the technical field of air separation equipment, in particular to energy-saving pressure swing adsorption equipment.
Background
In recent years, along with the increasingly strict requirements of energy conservation and consumption reduction in industrial production and the continuous enhancement of environmental awareness of people, the pressure swing adsorption technology is increasingly valued due to the advantages of simple process, high efficiency and energy conservation. Pressure swing adsorption is an industrial technology for gas purification, separation and purification. The method takes pressure change as a main operation parameter, and utilizes an adsorbent to selectively adsorb gas components; and (3) adsorbing the specific gas components under the condition of pressurization, and desorbing the adsorbed gas components under the condition of depressurization to realize the separation of different gas components. Pressure swing adsorption industrialization can employ air separation to produce oxygen and product gas. Because air contains a certain amount of water, oil, carbon dioxide and the like, and molecular sieves are the core part of pressure swing adsorption, adsorption of water, oil, carbon dioxide and the like by the molecular sieves can reduce adsorption of finished products or oxygen by the molecular sieves, and impurities such as water, oil, carbon dioxide and the like must be removed before compressed air enters an oxygen finished product separation device.
The drying device of the compressed air generally comprises a freeze drying device, a athermal drying device, a micro-thermal drying device and a blast thermal drying device, wherein the athermal drying device achieves the drying effect through pressure change, because the capacity of containing water vapor in the air is inversely proportional to the pressure, a part of the dried regenerated air is dried and decompressed and expanded to atmospheric pressure, the pressure enables the expanded air to become drier, then the expanded air flows through a drying layer which is not connected with air flow, namely, the dried regenerated air sucks moisture in the drying device through a drying tower which has absorbed enough water vapor, and is taken out of the drying device to achieve the aim of dehumidification, but the athermal drying device generally consumes about 15 percent of compressed air, the consumed air is too large, the micro-thermal drying device is a device which is used for making a small amount of dried regenerated air to be heated by a heater, and then the generated high-temperature air is blown out of the drying agent, and the moisture in the drying agent is taken out of the drying device by blowing the high-temperature air which is about 8 percent of the regenerated air is generally required to consume a certain electricity consumption, and the failure point of the heater is increased, and the drying device is blown out of the drying device by the air which is heated by the external device. However, the regeneration gas generally consumed is about 3%, and the electricity consumption is also required, which increases two failure points of the blower and the heater.
In summary, the existing drying equipment consumes large energy, in the working process of the general pressure swing adsorption air separation process, the tail gas of the oxygen finished product separation device and the regenerated gas of the molecular sieve in the drying bed are exhausted, waste is also high, the matched athermal regeneration device is required to be regenerated by gas alone, the air consumption is large, the energy consumption is high, the running cost of the whole pressure swing adsorption air separation equipment is high, and the general pressure swing adsorption air separation equipment is complex, so that popularization and use are influenced. Whereas the evacuated gas has the following properties: high oxygen content, certain pressure and no water vapor, so the gas has the value of reutilization. Meanwhile, when unqualified gas is produced by the existing pressure swing adsorption equipment, the unqualified gas can be directly discharged into the air, so that the previous work is wasted, the resource waste is caused, a large amount of time is wasted, and the production efficiency is reduced.
Disclosure of Invention
Aiming at the defects and the defects in the prior art, the utility model provides energy-saving pressure swing adsorption equipment which can reutilize the tail gas exhausted by pressure swing adsorption, thereby saving the air consumption of the equipment, reducing the operation cost and improving the energy utilization rate.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an energy-saving pressure swing adsorption equipment, includes air compressor machine, air storage tank, adsorption tower and the gas holder that are connected in proper order with the pipeline, be provided with air purification equipment between air storage tank and the air compressor machine, air storage tank's inlet end is linked together with air purification equipment's end of giving vent to anger, air compressor machine's end of giving vent to anger is linked together with air purification equipment's inlet end, be provided with the drying equipment who is used for carrying out dehumidification drying to the air that gets into between air storage tank and the adsorption tower, the adsorption tower still has the tail gas collection tank through exhaust duct intercommunication, the tail gas collection tank is through first backflow pipeline intercommunication air storage tank, be provided with reflux unit on the gas holder, gas holder one side is provided with the pipeline of giving vent to anger.
Further, the air purification device comprises a C-level precise filter, a T-level precise filter, an A-level precise filter and an H-level precise filter, wherein the air compressor is sequentially connected with the C-level precise filter, the T-level precise filter, the A-level precise filter and the H-level precise filter towards the air storage tank through pipelines, the air inlet end of the C-level precise filter is communicated with the air outlet end of the air compressor, and the air outlet end of the H-level precise filter is communicated with the air inlet end of the air storage tank.
Further, a second backflow pipeline is further arranged on the tail gas collecting tank and communicated with the adsorption tower, and a one-way valve is arranged on the second backflow pipeline.
Further, the exhaust pipeline and the first return pipeline are both provided with one-way valves.
Further, the reflux device comprises a gas concentration detector arranged on one side of the gas storage tank, a third reflux pipeline is arranged at the top of the gas storage tank, the gas storage tank is communicated with the adsorption tower through the third reflux pipeline, and a one-way valve is arranged on the third reflux pipeline.
Further, the outlet end of the air outlet pipeline is provided with a gas flowmeter, an exhaust pipeline is arranged at the air outlet of the gas flowmeter in a bypass mode, gas is discharged through the exhaust pipeline, and a proportional control valve is connected to the air outlet of the gas flowmeter through a pipeline.
Further, a buffer tank is arranged between the air purifying device and the air storage tank.
Further, the drying device is a heatless adsorption type dryer.
The utility model has the following beneficial effects: through the air storage tank, the air can be stored, a large amount of clean compressed air can be supplemented for the adsorption tower when the adsorption tower is rapidly pressurized, and the air is purified by the air purification equipment, so that impurities such as water, oil and carbon dioxide in the air are removed, and the impurities are prevented from reducing the filtering effect of the molecular sieve; the exhaust gas exhausted from the adsorption tower is collected and treated through the arranged exhaust gas collecting tank, and then is secondarily utilized, so that the air consumption of equipment is reduced, and the operation cost is reduced; through the reflux unit who sets up for unqualified gas enters into the adsorption tower again through reflux unit and purifies once more, can not cause the waste of resource, reinforcing equipment practicality improves production efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: 1-air compressor, 2-air purification equipment, 21-C level precision filter, 22-T level precision filter, 23-A level precision filter, 24-H level precision filter, 3-buffer tank, 4-air storage tank, 5-athermal adsorption dryer, 6-adsorption tower, 7-gas storage tank, 71-third return pipeline, 8-gas concentration detector, 9-air outlet pipeline, 10-tail gas collection tank, 101-second return pipeline, 102-first return pipeline, 103-exhaust pipeline, 11-gas flowmeter, 12-proportional control valve.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings.
As shown in fig. 1, an energy-saving pressure swing adsorption device comprises an air compressor 1, an air storage tank 4, an adsorption tower 6 and an air storage tank 7 which are sequentially connected by pipelines, wherein an air purification device 2 is arranged between the air storage tank 4 and the air compressor 1, the air inlet end of the air storage tank 4 is communicated with the air outlet end of the air purification device 2, the air outlet end of the air compressor 1 is communicated with the air inlet end of the air purification device 2, a drying device for dehumidifying and drying the entering air is arranged between the air storage tank 4 and the adsorption tower 6, the adsorption tower 6 is also communicated with a tail gas collecting tank 10 through an exhaust pipeline 103, the tail gas collecting tank 10 is communicated with the air storage tank 4 through a first backflow pipeline 102, a backflow device is arranged on the air storage tank 7, and an air outlet pipeline 9 is arranged on one side of the air storage tank 7.
In the embodiment, through the air storage tank, the air can be stored, a large amount of clean compressed air can be supplemented for the adsorption tower when the adsorption tower is rapidly pressurized, and the air purification equipment is arranged to purify the entering air, so that impurities such as water, oil and carbon dioxide in the air are removed, and the impurities are prevented from reducing the filtering effect of the molecular sieve; the exhaust gas exhausted from the adsorption tower is collected and treated through the arranged exhaust gas collecting tank, and then is secondarily utilized, so that the air consumption of equipment is reduced, and the operation cost is reduced; through the reflux unit who sets up for unqualified gas enters into the adsorption tower again through reflux unit and purifies once more, can not cause the waste of resource, reinforcing equipment practicality improves production efficiency.
The air purifying device comprises a C-level precise filter 21, a T-level precise filter 22, an A-level precise filter 23 and an H-level precise filter 24, wherein the air compressor 1 is sequentially connected with the C-level precise filter 21, the T-level precise filter 22, the A-level precise filter 23 and the H-level precise filter 24 towards the air storage tank 4 through pipelines, the air inlet end of the C-level precise filter 21 is communicated with the air outlet end of the air compressor 1, and the air outlet end of the H-level precise filter 24 is communicated with the air inlet end of the air storage tank 4; the C-stage precise filter can filter out a large amount of liquid and solid particles with the diameter of more than 3 microns, the minimum residual oil content is only 5ppm, the T-stage precise filter can filter out liquid and solid particles with the diameter of as small as 1 micron, the minimum residual oil content is only 0.5ppm, the A-stage precise filter can filter out liquid and solid particles with the diameter of as small as 0.01 microns, the minimum residual oil content is only 0.001ppm, the H-stage precise filter can completely adsorb gas peculiar smell such as hydrocarbon so as to meet the high-quality air quality requirements such as foods, medicines and respiratory air, and the like, through precise filters (also called security filters) with different precision, the shell of the cylinder is generally made of stainless steel materials, tubular filter elements such as PP melt-blown, wire-burned, folded, titanium filter elements, active carbon filter elements and the like are adopted as filter elements, air is filtered for multiple times, and the subsequent adsorption quality is improved.
The exhaust gas collection tank is further provided with a second backflow pipeline 101 which is communicated with the adsorption tower 6, the second backflow pipeline 101 is provided with a one-way valve, and the exhaust pipeline 103 and the first backflow pipeline 102 are respectively provided with a one-way valve; exhaust of the adsorption tower is discharged into the exhaust gas collecting tank through the exhaust pipeline, when gas is required to be supplemented into the air storage tank, the check valve on the first backflow pipeline can be opened, gas is supplemented into the air storage tank in a one-way mode, the check valve on the second backflow pipeline can be reused, the check valve on the exhaust pipeline is closed, exhaust gas is input into the adsorption tower, and the molecular sieve in the adsorption tower is purged, so that the gas utilization rate is improved, and the resource waste is reduced.
The reflux device comprises a gas concentration detector 8 arranged on one side of a gas storage tank 7, a third reflux pipeline 71 is arranged at the top of the gas storage tank 7, the gas storage tank 7 is communicated with the adsorption tower 6 through the third reflux pipeline 71, and a one-way valve is arranged on the third reflux pipeline 71; whether the gas in the gas storage tank reaches the qualification standard is detected through the gas concentration detector, when the gas is detected to be unqualified, the check valve on the third backflow pipeline is opened, the unqualified gas enters the adsorption tower again to be purified again, the waste of resources can not be caused, the practicability of equipment is enhanced, and the production efficiency is improved.
The outlet end of the air outlet pipeline is provided with a gas flowmeter 11, an air outlet of the gas flowmeter 11 is bypassed with an air exhaust pipeline, air is discharged through the air exhaust pipeline, and the air outlet of the gas flowmeter is connected with a proportional control valve 12 through a pipeline; the flow of the output gas is regulated through the proportional control valve, the requirement of gas utilization equipment is met, the operation is convenient, and meanwhile, the bypass exhaust pipeline is convenient for discharging the gas in a large flow.
Illustratively, a buffer tank 3 is disposed between the air cleaning apparatus 2 and the air storage tank 4; compressed air generated by the air compressor enters the buffer tube to stabilize air flow, so that impact on subsequent equipment is prevented.
Working principle: when the air purifying device works, the air compressor is started firstly, so that the air compressor can compress air and convey the air to the air purifying device to filter and purify the air, then the air enters the buffer tank to reduce impact of stable air, then enters the air storage tank to store, a large amount of clean compressed air can be supplemented for the air when the adsorption tower is rapidly pressurized, the air enters the drying device through the air storage tank to dry the air, water vapor in the air is removed, then the air is separated under the action of the molecular sieve in the adsorption tower, the obtained finished gas enters the air storage tank, and the rest of the gas enters the tail gas collecting tank through the exhaust pipeline to be reused.
Illustratively, the drying apparatus is a heatless adsorption dryer; simple structure and convenient maintenance.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. The present utility model is not limited to the above-described embodiments, and the above-described embodiments and descriptions merely illustrate the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. An energy-saving pressure swing adsorption device, which is characterized in that: including air compressor machine, air storage tank, adsorption tower and the gas holder that are connected in proper order with the pipeline, be provided with air purification equipment between air storage tank and the air compressor machine, air storage tank's inlet end is linked together with air purification equipment's end of giving vent to anger, air compressor machine's end of giving vent to anger is linked together with air purification equipment's inlet end, be provided with between air storage tank and the adsorption tower and be used for carrying out dehumidification dry drying's drying equipment to the air that gets into, the adsorption tower still has the tail gas collection tank through exhaust duct intercommunication, the tail gas collection tank is through first backflow pipeline intercommunication air storage tank, be provided with reflux unit on the gas holder, gas storage tank one side is provided with the pipeline of giving vent to anger.
2. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: the air purification device comprises a C-level precise filter, a T-level precise filter, an A-level precise filter and an H-level precise filter, wherein the air compressor is sequentially connected with the C-level precise filter, the T-level precise filter, the A-level precise filter and the H-level precise filter towards the air storage tank through pipelines, the air inlet end of the C-level precise filter is communicated with the air outlet end of the air compressor, and the air outlet end of the H-level precise filter is communicated with the air inlet end of the air storage tank.
3. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: the tail gas collecting tank is further provided with a second backflow pipeline communicated with the adsorption tower, and the second backflow pipeline is provided with a one-way valve.
4. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: and the exhaust pipeline and the first return pipeline are both provided with one-way valves.
5. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: the reflux device comprises a gas concentration detector arranged on one side of the gas storage tank, a third reflux pipeline is arranged at the top of the gas storage tank, the gas storage tank is communicated with the adsorption tower through the third reflux pipeline, and a one-way valve is arranged on the third reflux pipeline.
6. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: the outlet end of the air outlet pipeline is provided with a gas flowmeter, an exhaust pipeline is arranged at a bypass at the air outlet of the gas flowmeter, gas is discharged through the exhaust pipeline, and a proportional control valve is connected at the air outlet of the gas flowmeter through a pipeline.
7. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: and a buffer tank is arranged between the air purifying equipment and the air storage tank.
8. An energy-saving pressure swing adsorption apparatus according to claim 1, wherein: the drying equipment is a heatless adsorption type dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222064782.8U CN219002529U (en) | 2022-08-08 | 2022-08-08 | Energy-saving pressure swing adsorption equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222064782.8U CN219002529U (en) | 2022-08-08 | 2022-08-08 | Energy-saving pressure swing adsorption equipment |
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| Publication Number | Publication Date |
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| CN219002529U true CN219002529U (en) | 2023-05-12 |
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| CN202222064782.8U Active CN219002529U (en) | 2022-08-08 | 2022-08-08 | Energy-saving pressure swing adsorption equipment |
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