CN210374300U - Air separation device utilizing waste heat of air compressor - Google Patents
Air separation device utilizing waste heat of air compressor Download PDFInfo
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- CN210374300U CN210374300U CN201920992025.2U CN201920992025U CN210374300U CN 210374300 U CN210374300 U CN 210374300U CN 201920992025 U CN201920992025 U CN 201920992025U CN 210374300 U CN210374300 U CN 210374300U
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Abstract
The utility model relates to an air compressor machine waste heat utilization's air separation plant, including the air cleaner, air compressor machine, air cooling tower, the molecular sieve adsorber that connect gradually, dirty nitrogen gas system is connected to the molecular sieve adsorber, and the air that the air compressor machine is connected with the air cooling tower is responsible for and is equipped with the heat exchanger between the dirty nitrogen gas system, and the hot medium passageway of heat exchanger is responsible for with the air through hot air branch pipe and cold air branch pipe respectively and is connected, and the cold medium passageway of heat exchanger is respectively through the dirty nitrogen gas intake-tube connection of cold nitrogen gas branch pipe and hot nitrogen gas branch pipe and dirty nitrogen gas system. A first valve is arranged on an air main pipe between the hot air branch pipe and the cold air branch pipe, and a second valve is arranged on a waste nitrogen inlet pipe between the cold nitrogen branch pipe and the hot nitrogen branch pipe. The utility model discloses dirty nitrogen gas passes through the heat exchanger and is heated by the high temperature exhaust of air compressor machine export. The electric energy of the electric heater for heating the polluted nitrogen is saved. The refrigeration water and the cooling water of the air cooling tower are saved, and the electric energy for preparing the refrigeration water and the cooling water is saved.
Description
Technical Field
The utility model relates to a chemical industry, metallurgical field, in particular to air separator of air compressor machine waste heat utilization.
Background
The large air separation plant has the process that raw air is pressurized to 0.4-0.6MPa by an air compressor, precooled by air, purified by a molecular sieve adsorber and then enters a rectifying tower of an air separation cold box for air separation. The molecular sieve adsorber is used for adsorbing impurities such as moisture, carbon dioxide and the like in air by utilizing the adsorption property of a molecular sieve, when the impurities adsorbed by the molecular sieve adsorber are saturated, the molecular sieve can be used for resolving the adsorbed water and carbon dioxide by heating, and then the water and carbon dioxide are blown out of the molecular sieve adsorber by cold blowing. Generally, the molecular sieve is heated by heating the waste nitrogen gas and using the high-temperature waste nitrogen gas to achieve the purpose of analysis. The dirty nitrogen gas of heating generally heats with electricity or steam, and the cooler is not established to the last stage of air compressor machine, and air temperature is about 100 degrees, cools off to 12 degrees through the air cooling tower, and a large amount of heats have been walked by the hosepipe, have wasted the circulating water, and a large amount of heats are also extravagant, and the dirty gas of heating still additionally needs the consumed heat, has wasted the energy.
Disclosure of Invention
The utility model aims to solve the technical problem that an air compressor machine waste heat utilization's air separation plant is provided, the carminative waste heat of raw materials air compressor machine final stage is used for heating molecular sieve analysis gas.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides an air compressor machine waste heat utilization's air separation plant, including the air cleaner, the air compressor machine that connect gradually, the air cooling tower, the molecular sieve adsorber, dirty nitrogen gas system is connected to the molecular sieve adsorber, the air that the air compressor machine is connected with the air cooling tower is responsible for and is equipped with the heat exchanger between the dirty nitrogen gas system, the hot medium passageway of heat exchanger is responsible for with the air through hot air branch pipe and cold air branch pipe respectively and is connected, the cold medium passageway of heat exchanger is respectively through the dirty nitrogen gas intake-tube connection of cold nitrogen gas branch pipe and hot nitrogen gas branch pipe and dirty nitrogen gas system. A first valve is arranged on an air main pipe between the hot air branch pipe and the cold air branch pipe, and a second valve is arranged on a waste nitrogen inlet pipe between the cold nitrogen branch pipe and the hot nitrogen branch pipe.
The heat exchanger is a gas-gas heat exchanger.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses dirty nitrogen gas passes through the heat exchanger and is heated by the high temperature exhaust of air compressor machine export. The electric energy of the electric heater for heating the polluted nitrogen is saved. The refrigeration water and the cooling water of the air cooling tower are saved, and the electric energy for preparing the refrigeration water and the cooling water is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the system comprises an air filter 1, an air compressor 2, an air main pipe 3, an air cooling tower 4, a heat exchanger 5, a cold nitrogen branch pipe 6, an electric heater 7, a molecular sieve adsorber 8, a hot nitrogen branch pipe 9, a hot air branch pipe 10, a cold air branch pipe 11, a waste nitrogen inlet pipe 12, a valve II 13 and a valve I14.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings:
as shown in fig. 1, the air separation plant utilizing the waste heat of the air compressor comprises an air filter 1, an air compressor 2, an air cooling tower 4 and a molecular sieve adsorber 8 which are sequentially connected, wherein the molecular sieve adsorber 8 is connected with a waste nitrogen system, and the waste nitrogen system comprises a waste nitrogen inlet pipe 12 and an electric heater 7.
A heat exchanger 5 is arranged between an air main pipe 3 connected with the air compressor 2 and the air cooling tower 4 and a waste nitrogen system, the heat exchanger 5 is a gas-gas heat exchanger, and waste nitrogen is heated by high-temperature exhaust gas at the outlet of the air compressor 2 through the heat exchanger 5.
The hot medium channel of the heat exchanger 5 is respectively connected with the air main pipe 3 through a hot air branch pipe 10 and a cold air branch pipe 11, and the cold medium channel of the heat exchanger 5 is respectively connected with a waste nitrogen gas inlet pipe 12 of a waste nitrogen gas system through a cold nitrogen gas branch pipe 6 and a hot nitrogen gas branch pipe 9. A first valve 14 is arranged on the air main pipe 3 between the hot air branch pipe 10 and the cold air branch pipe 11, and a second valve 13 is arranged on the waste nitrogen inlet pipe 12 between the cold nitrogen branch pipe 6 and the hot nitrogen branch pipe 9. The inlet and the outlet of the heat exchanger 5 are provided with valves, when the heat exchanger 5 needs to be overhauled or in case of accidents, the heat exchanger 5 can be conveniently isolated from the air separation device, and the normal operation of the air separation device is not influenced.
Example (b):
the utility model provides an air separation plant of air compressor machine waste heat utilization, is including air cleaner 1, air compressor machine 2, air cooling tower 4, the molecular sieve adsorber 8 that connects gradually, and dirty nitrogen gas system is connected to molecular sieve adsorber 8, and dirty nitrogen gas system includes dirty nitrogen gas intake pipe 12, electric heater 7.
A heat exchanger 5 is arranged between an air main pipe 3 connected with the air compressor 2 and the air cooling tower 4 and a waste nitrogen system, the heat exchanger 5 is a gas-gas heat exchanger, and waste nitrogen is heated by high-temperature exhaust gas at the outlet of the air compressor 2 through the heat exchanger 5.
The hot medium channel of the heat exchanger 5 is respectively connected with the air main pipe 3 through a hot air branch pipe 10 and a cold air branch pipe 11, and the cold medium channel of the heat exchanger 5 is respectively connected with a waste nitrogen gas inlet pipe 12 of a waste nitrogen gas system through a cold nitrogen gas branch pipe 6 and a hot nitrogen gas branch pipe 9. A first valve 14 is arranged on the air main pipe 3 between the hot air branch pipe 10 and the cold air branch pipe 11, and a second valve 13 is arranged on the waste nitrogen inlet pipe 12 between the cold nitrogen branch pipe 6 and the hot nitrogen branch pipe 9. The air flow in the heat exchanger 5 was 6nm3H, waste nitrogen flow of 1nm3/h。
The heat exchange process of the high-temperature air at the outlet of the air compressor and the low-temperature polluted nitrogen is carried out:
and closing a first valve 14 on the air main pipe, sending the air into the heat exchanger 5 through the hot air branch pipe 10, cooling the air from the temperature of more than 90 ℃ to 80 ℃, then returning the air to the air main pipe through the cold air branch pipe 11, then continuing to cool the air in the air cooling tower 4, and then entering the molecular sieve adsorber 8 for purification and then entering a next-stage rectifying tower for separation.
And closing a second valve 13 on the sewage nitrogen inlet pipe, sending the sewage nitrogen into the heat exchanger 5 through the cold nitrogen branch pipe 6, heating the sewage nitrogen to more than 80 ℃ from below 20 ℃, then returning the sewage nitrogen into the sewage nitrogen inlet pipe through the hot nitrogen branch pipe 9, then feeding the sewage nitrogen into the electric heater 7 for continuous heating, and then feeding the sewage nitrogen into the molecular sieve adsorber 8 for regeneration.
The above is only the basic principle of the present invention, not to the present invention makes any limitation, all the bases of the present invention are the same changes and modifications to the above, all within the scope of the protection scheme of the present patent technology.
Claims (2)
1. An air separation device utilizing waste heat of an air compressor comprises an air filter, the air compressor, an air cooling tower and a molecular sieve adsorber which are sequentially connected, wherein the molecular sieve adsorber is connected with a waste nitrogen system; a first valve is arranged on an air main pipe between the hot air branch pipe and the cold air branch pipe, and a second valve is arranged on a waste nitrogen inlet pipe between the cold nitrogen branch pipe and the hot nitrogen branch pipe.
2. The air separation device utilizing waste heat of the air compressor as claimed in claim 1, wherein the heat exchanger is an air-to-air heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992025.2U CN210374300U (en) | 2019-06-28 | 2019-06-28 | Air separation device utilizing waste heat of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992025.2U CN210374300U (en) | 2019-06-28 | 2019-06-28 | Air separation device utilizing waste heat of air compressor |
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| Publication Number | Publication Date |
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| CN210374300U true CN210374300U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920992025.2U Active CN210374300U (en) | 2019-06-28 | 2019-06-28 | Air separation device utilizing waste heat of air compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2614358A (en) * | 2022-07-20 | 2023-07-05 | Peak Scient Instruments Limited | Improvements in or relating to gas apparatus |
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2019
- 2019-06-28 CN CN201920992025.2U patent/CN210374300U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2614358A (en) * | 2022-07-20 | 2023-07-05 | Peak Scient Instruments Limited | Improvements in or relating to gas apparatus |
| GB2614358B (en) * | 2022-07-20 | 2024-01-10 | Peak Scient Instruments Limited | Improvements in or relating to gas apparatus |
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