CN214345392U - Waste heat regeneration adsorption type dryer with waste heat recovery device - Google Patents
Waste heat regeneration adsorption type dryer with waste heat recovery device Download PDFInfo
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- CN214345392U CN214345392U CN202023154421.XU CN202023154421U CN214345392U CN 214345392 U CN214345392 U CN 214345392U CN 202023154421 U CN202023154421 U CN 202023154421U CN 214345392 U CN214345392 U CN 214345392U
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Abstract
The utility model relates to a waste heat regeneration adsorption dryer with a waste heat recovery device, which comprises a gas-water heat exchanger, a rear cooler, a gas-water separator and two adsorption towers, wherein the two adsorption towers are respectively a tower A and a tower B, a compressed air inlet is connected with the gas-water heat exchanger, the rear cooler and the gas-water separator in sequence, and a switching pneumatic butterfly valve is arranged between the compressed air inlet and the gas-water heat exchanger; seven passages are connected between the tower A and the tower B and respectively comprise a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage and a seventh passage, the compressed air inlet is communicated with the third passage, and the air outlet end of the gas-water separator is communicated with the seventh passage; and the switching pneumatic butterfly valve is communicated with the sixth branch passage with the gas-water heat exchanger. The utility model discloses set up air water heat exchanger before the aftercooler, make hot compressed air earlier through air water heat exchanger, through the rear portion cooler cooling again to realize energy saving and consumption reduction's purpose.
Description
Technical Field
The utility model belongs to the technical field of waste heat utilization, especially, relate to a take waste heat recovery device's waste heat regeneration adsorption dryer.
Background
In the conventional engineering design, in order to reduce the regeneration energy consumption of the dryer, a final cooler of a centrifugal air compressor is removed, and the exhaust temperature is controlled to be 100-140 ℃. The regeneration tower of the waste heat regeneration adsorption dryer utilizes 100-140 ℃ high-temperature compressed air for regeneration, and the compressed air dried in the adsorption tower needs to be cooled to 40 ℃ through circulating water, namely the heat of the compressed air with the temperature difference of 60-100 ℃ is wasted, so that the waste heat of the compressed air is very necessary to be recovered.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the not enough of prior art existence, the utility model provides a take waste heat recovery device's waste heat regeneration adsorption dryer sets up air water heat exchanger before the aftercooler, makes hot compressed air earlier through air water heat exchanger, through the rear portion cooler cooling again, through the waste heat of retrieving hot compressed air, reduces the recirculated cooling water volume of aftercooler, reduces compressed air system energy consumption to realize energy saving and consumption reduction's purpose.
A waste heat regeneration adsorption dryer with a waste heat recovery device comprises a gas-water heat exchanger, a rear cooler, a gas-water separator and two adsorption towers, wherein the two adsorption towers are a tower A and a tower B respectively; seven passages are connected between the tower A and the tower B and respectively comprise a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage and a seventh passage, the compressed air inlet is communicated with the third passage, and the air outlet end of the gas-water separator is communicated with the seventh passage; and the switching pneumatic butterfly valve is communicated with the sixth branch passage with the gas-water heat exchanger.
The first branch passage is provided with a tower A air outlet pneumatic butterfly valve and a tower B air outlet pneumatic butterfly valve, and the compressed air outlet is arranged between the tower A air outlet pneumatic butterfly valve and the tower B air outlet pneumatic butterfly valve;
the second branch passage is provided with a tower A cold blowing air inlet pneumatic butterfly valve and a tower B cold blowing air inlet pneumatic butterfly valve, a cold blowing air regulating valve and an air flow pore plate are arranged between the first branch passage and the second branch passage, one end of a connection part is positioned between the tower A air outlet pneumatic butterfly valve and the tower B air outlet pneumatic butterfly valve, and the other end of the connection part is positioned between the tower A cold blowing air inlet pneumatic butterfly valve and the tower B cold blowing air inlet pneumatic butterfly valve;
the third branch passage is provided with a tower A regenerated gas inlet pneumatic butterfly valve and a tower B regenerated gas inlet pneumatic butterfly valve, and the joint of the compressed air inlet and the third branch passage is positioned between the tower A regenerated gas inlet pneumatic butterfly valve and the tower B regenerated gas inlet pneumatic butterfly valve;
a buffer gas pneumatic butterfly valve is arranged on the fourth branch passage;
the fifth branch passage is provided with a tower A blowing and exhausting pneumatic butterfly valve, a silencer and a tower B blowing and exhausting pneumatic butterfly valve;
the sixth branch passage is provided with a tower A air inlet pneumatic butterfly valve and a tower B air inlet pneumatic butterfly valve, and the connection part between the switching pneumatic butterfly valve and the air-water heat exchanger and communicated with the sixth branch passage is positioned between the tower A air inlet pneumatic butterfly valve and the tower B air inlet pneumatic butterfly valve;
and the seventh branch passage is provided with an A tower regenerated gas outlet pneumatic butterfly valve and a B tower regenerated gas outlet pneumatic butterfly valve, and the joint of the gas outlet end of the gas-water separator and the seventh branch passage is positioned between the A tower regenerated gas outlet pneumatic butterfly valve and the B tower regenerated gas outlet pneumatic butterfly valve.
The utility model has the advantages that:
1. the utility model can reduce the quantity of circulating cooling water of the after cooler and reduce the energy consumption of the circulating cooling water system;
2. can replace the heat source of bathing hot water in the whole plant, thereby reducing the energy consumption of the whole plant;
3. the whole machine can be skid-mounted into complete equipment, so that the model selection and the installation are convenient;
4. the device can adopt the modularized design, selects the load of the gas-water heat exchanger according to different hot water temperatures and hot compressed air flows, can shorten the design period and improve the design efficiency.
Drawings
FIG. 1 is a schematic diagram illustrating the operation of a tower A and a tower B in an adsorption dryer in a waste heat desorption stage according to an embodiment;
FIG. 2 is a schematic diagram of the operation of tower A and tower B in the adsorption dryer in the cooling and drying regeneration stages according to the embodiment;
FIG. 3 is a schematic diagram illustrating the operation of the column B operation and the column A waste heat desorption stage in the adsorption dryer according to the embodiment;
FIG. 4 is a schematic diagram of operation of tower B in the adsorption dryer and tower A in the cooling and drying regeneration stage;
wherein the content of the first and second substances,
1-gas-water heat exchanger, 2-rear cooler, 3-gas-water separator, 4-A tower, 5-B tower, 6-silencer, a-compressed air inlet, B-compressed air outlet, c-water inlet, d-water outlet, e-circulating cooling water inlet, f-circulating cooling water outlet, V1-A tower blowing exhaust pneumatic butterfly valve, V2-B tower blowing exhaust pneumatic butterfly valve, V3-A tower inlet pneumatic butterfly valve, V4-B tower inlet pneumatic butterfly valve, V5-A tower regeneration air outlet pneumatic butterfly valve, V6-B tower regeneration air outlet pneumatic butterfly valve, V7-A tower regeneration air inlet pneumatic butterfly valve, V8-B tower regeneration air inlet pneumatic butterfly valve, V9-A tower cold blowing air inlet pneumatic butterfly valve, V10-B tower cold blowing air inlet pneumatic butterfly valve, v11-tower A air outlet pneumatic butterfly valve, V12-tower B air outlet pneumatic butterfly valve, V13-buffer pneumatic butterfly valve, V14-throttling orifice plate, V15-cold blowing air regulating valve and V16-switching pneumatic butterfly valve.
Detailed Description
For better explanation of the present invention, the following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings for better understanding.
A waste heat regeneration adsorption dryer with a waste heat recovery device comprises a gas-water heat exchanger 1, a rear cooler 2, a gas-water separator 3 and two adsorption towers, wherein the two adsorption towers are respectively a tower A and a tower B, a compressed air inlet a is sequentially connected with the gas-water heat exchanger 1, the rear cooler 2 and the gas-water separator 3, and a switching pneumatic butterfly valve V16 is arranged between the compressed air inlet a and the gas-water heat exchanger 1; seven passages are connected between the tower A and the tower B and respectively comprise a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage and a seventh passage, the compressed air inlet a is communicated with the third passage, and the air outlet end of the gas-water separator 3 is communicated with the seventh passage; and the switching pneumatic butterfly valve V16 is communicated with the sixth branch passage between the gas-water heat exchanger 1.
The first branch passage is provided with a tower A air outlet pneumatic butterfly valve V11 and a tower B air outlet pneumatic butterfly valve V12, and a compressed air outlet B is arranged between a tower A air outlet pneumatic butterfly valve V11 and a tower B air outlet pneumatic butterfly valve V12;
the second branch passage is provided with a tower A cold blowing air inlet pneumatic butterfly valve V9 and a tower A cold blowing air inlet pneumatic butterfly valve, a cold blowing air regulating valve V15 and an air flow hole plate are arranged between the first branch passage and the second branch passage, one end of a connecting part is positioned between a tower A air outlet pneumatic butterfly valve V11 and a tower B air outlet pneumatic butterfly valve V12, and the other end of the connecting part is positioned between a tower A cold blowing air inlet pneumatic butterfly valve V9 and a tower A cold blowing air inlet pneumatic butterfly valve;
the third branch passage is provided with a tower A regenerated gas inlet pneumatic butterfly valve V7 and a tower B regenerated gas inlet pneumatic butterfly valve V8, and the joint of the compressed air inlet a and the third branch passage is positioned between a tower A regenerated gas inlet pneumatic butterfly valve V7 and a tower B regenerated gas inlet pneumatic butterfly valve V8;
a buffer gas pneumatic butterfly valve V13 is arranged on the fourth branch passage;
the fifth branch passage is provided with a tower A blowing and exhausting pneumatic butterfly valve V1, a silencer 6 and a tower B blowing and exhausting pneumatic butterfly valve V2;
the sixth branch passage is provided with a tower A air inlet pneumatic butterfly valve V3 and a tower B air inlet pneumatic butterfly valve V4, and the connection position between the switching pneumatic butterfly valve V16 and the gas-water heat exchanger 1 and communicated with the sixth branch passage is positioned between a tower A air inlet pneumatic butterfly valve V3 and a tower B air inlet pneumatic butterfly valve V4;
and the seventh branch passage is provided with an A tower regenerated gas outlet pneumatic butterfly valve V5 and a B tower regenerated gas outlet pneumatic butterfly valve V6, and the joint of the gas outlet end of the gas-water separator 3 and the seventh branch passage is positioned between the A tower regenerated gas outlet pneumatic butterfly valve V5 and the B tower regenerated gas outlet pneumatic butterfly valve V6.
The waste heat regeneration adsorption dryer with the waste heat recovery device realizes waste heat recovery through the upper half cycle and the lower half cycle, wherein the upper half cycle is as follows: tower A works and tower B regenerates; the following half cycle: the working principle of the tower B is as follows:
firstly, cooling water is introduced into the gas-water heat exchanger 1 through a water inlet c of the gas-water heat exchanger 1, the temperature of the inlet water is less than or equal to 38 ℃, and the cooling water is discharged through a water outlet d; circulating cooling water is introduced into the rear cooler 2 through a circulating cooling water inlet e of the rear cooler 2, the temperature of the water is less than or equal to 38 ℃, and the water is discharged through a circulating cooling water outlet f.
First, the first half cycle: tower A operation and tower B regeneration
(1) The first stage is as follows: working tower A and residual heat desorption tower B
As shown in fig. 1, a tower B regenerated gas inlet pneumatic butterfly valve V8, a tower B inlet pneumatic butterfly valve V4, a tower a regenerated gas outlet pneumatic butterfly valve V5, and a tower a outlet pneumatic butterfly valve V11 are in an open state; the exhaust gas of the last stage of the high-temperature compressor at 100-140 ℃ enters a tower B of the dryer through a regenerated gas inlet pneumatic butterfly valve V8 of the tower B, and the adsorbent in the tower B is subjected to waste heat desorption; the gas enters a gas-water heat exchanger 1 through a B tower gas inlet pneumatic butterfly valve V4 for cooling, then enters a rear cooler 2 for cooling to 40 ℃, the separated gas enters a gas-water separator 3, and the separated water is discharged through a blow-down valve of the rear cooler 2; the gas which enters the gas-water separator 3 after separation enters the tower A from a regenerated gas outlet pneumatic butterfly valve V5 of the tower A, and the gas is further dehydrated and dried under the adsorption action of a drying agent; then the air is discharged through the tower A and is output through a compressed air outlet b by a pneumatic butterfly valve V11.
(2) And a second stage: tower A working, tower B blowing cooling and drying regeneration
As shown in figure 2, in the first stage, the waste heat desorption of the tower B is completed, then the tower B enters the stages of blowing cooling and drying regeneration, at the same time, a switching pneumatic butterfly valve V16 is opened, a B tower regenerated gas inlet pneumatic butterfly valve V8 is closed, the exhaust gas of a 100-140 ℃ high-temperature compressor at the last stage directly enters a gas-water heat exchanger 1 for cooling, then enters a rear cooler 2 for cooling to 40 ℃, then enters a gas-water separator 3, the separated water is discharged through a blow-down valve, the separated gas enters the tower A through a tower regenerated gas outlet pneumatic butterfly valve V5 and is output through a tower A gas outlet pneumatic butterfly valve V11, meanwhile, a cold blowing regulating valve V15 and a B tower cold blowing gas inlet pneumatic butterfly valve V10 are opened, about 1% of the gas dried by the tower A passes through a throttling orifice plate V14, the gas flows through the tower B after pressure reduction and expansion, the adsorption bed layer of the tower B is cooled and further dried and regenerated for use, after the gas flows through the B tower, the B tower blowing exhaust pneumatic butterfly valve V2 is opened, and the gas is exhausted to the atmosphere through the silencer 6.
And when the cooling blowing and drying regeneration of the tower B are finished, closing a blowing exhaust pneumatic butterfly valve V2 of the tower B, and boosting the pressure to double-tower pressure balance through a cold blowing adjusting valve V15 so as to prevent dew point and pressure peak phenomena during switching. At this time, the operation of the first half cycle of the dryer is finished, and after 3.5-4.5 hours, the double towers are switched to enter the next half cycle.
Second, the following half period: tower B operation, tower A regeneration
(1) The first stage is as follows: working tower B and residual heat desorption tower A
As shown in fig. 3, a tower a regenerated gas inlet pneumatic butterfly valve V7, a tower a inlet pneumatic butterfly valve V3, a tower B regenerated gas outlet pneumatic butterfly valve V6 and a tower a regenerated gas inlet pneumatic butterfly valve V7 are in an open state, the final-stage exhaust gas of a high-temperature compressor at 100-140 ℃ enters a dryer tower a through the tower a regenerated gas inlet pneumatic butterfly valve V7, the adsorbent in the tower a is subjected to waste heat desorption, enters a gas-water heat exchanger 1 through the tower a inlet pneumatic butterfly valve V3 for cooling, enters a rear cooler 2 for cooling to 40 ℃, the separated gas enters a gas-water separator 3, and the separated water is discharged through a blow-off valve of the rear cooler 2; the gas which enters the gas-water separator 3 after separation enters the tower B from a regenerated gas outlet pneumatic butterfly valve V6 of the tower B, and the gas is further dehydrated and dried under the adsorption action of a drying agent; then the regenerated gas enters a pneumatic butterfly valve V7 through the tower A and is output from a compressed air outlet b.
(2) And a second stage: working of tower B, blowing cold and drying regeneration of tower A
As shown in fig. 4, in the first stage, after the desorption of the residual heat of the tower a is completed, the cooling blowing and drying regeneration stage is started, and at this time, the switching pneumatic butterfly valve V16 is in an open state, and simultaneously, the regeneration gas inlet pneumatic butterfly valve V7 of the tower a is in a closed state; the final stage exhaust gas of a high-temperature compressor at 100-140 ℃ directly enters a gas-water heat exchanger 1 for cooling, then enters a cooler for cooling to 40 ℃, then enters a gas-water separator 3, the separated water is discharged through a blow-down valve, the separated gas enters a B tower through a B tower regenerated gas outlet pneumatic butterfly valve V6 and is output through a B tower outlet pneumatic butterfly valve V12, meanwhile, a cold blowing air regulating valve V15 and an A tower cold blowing gas inlet pneumatic butterfly valve V9 are opened, about 1% of the gas dried by the B tower flows through an orifice plate V14 after pressure reduction and expansion, flows through the A tower, the adsorption bed layer of the A tower is cooled and further dried and regenerated for the next half period of use, and after the gas flows through the A tower, the A tower blowing gas outlet pneumatic butterfly valve V1 is opened, so that the gas is discharged into the atmosphere through a silencer 6.
And when the tower A is cooled by blowing and the drying regeneration is finished, the tower A is closed to blow and exhaust the pneumatic butterfly valve V1, and the pressure is increased to double-tower pressure balance through the cold blowing adjusting valve V15, so that the dew point and pressure peak phenomena are prevented during switching. At this time, the lower half period of the dryer is finished, and the double towers are switched to enter the next upper half period.
Claims (2)
1. The utility model provides a take waste heat recovery device's waste heat regeneration adsorption dryer which characterized in that: the device comprises a gas-water heat exchanger, a rear cooler, a gas-water separator and two adsorption towers, wherein the two adsorption towers are respectively a tower A and a tower B, a compressed air inlet is sequentially connected with the gas-water heat exchanger, the rear cooler and the gas-water separator, and a switching pneumatic butterfly valve is arranged between the compressed air inlet and the gas-water heat exchanger; seven passages are connected between the tower A and the tower B and respectively comprise a first passage, a second passage, a third passage, a fourth passage, a fifth passage, a sixth passage and a seventh passage, the compressed air inlet is communicated with the third passage, and the air outlet end of the gas-water separator is communicated with the seventh passage; and the switching pneumatic butterfly valve is communicated with the sixth branch passage with the gas-water heat exchanger.
2. The waste heat regeneration adsorption dryer with the waste heat recovery device according to claim 1, characterized in that: the first branch passage is provided with a tower A air outlet pneumatic butterfly valve and a tower B air outlet pneumatic butterfly valve, and the compressed air outlet is arranged between the tower A air outlet pneumatic butterfly valve and the tower B air outlet pneumatic butterfly valve;
the second branch passage is provided with a tower A cold blowing air inlet pneumatic butterfly valve and a tower B cold blowing air inlet pneumatic butterfly valve, a cold blowing air regulating valve and an air flow pore plate are arranged between the first branch passage and the second branch passage, one end of a connection part is positioned between the tower A air outlet pneumatic butterfly valve and the tower B air outlet pneumatic butterfly valve, and the other end of the connection part is positioned between the tower A cold blowing air inlet pneumatic butterfly valve and the tower B cold blowing air inlet pneumatic butterfly valve;
the third branch passage is provided with a tower A regenerated gas inlet pneumatic butterfly valve and a tower B regenerated gas inlet pneumatic butterfly valve, and the joint of the compressed air inlet and the third branch passage is positioned between the tower A regenerated gas inlet pneumatic butterfly valve and the tower B regenerated gas inlet pneumatic butterfly valve;
a buffer gas pneumatic butterfly valve is arranged on the fourth branch passage;
the fifth branch passage is provided with a tower A blowing and exhausting pneumatic butterfly valve, a silencer and a tower B blowing and exhausting pneumatic butterfly valve;
the sixth branch passage is provided with a tower A air inlet pneumatic butterfly valve and a tower B air inlet pneumatic butterfly valve, and the connection part between the switching pneumatic butterfly valve and the air-water heat exchanger and communicated with the sixth branch passage is positioned between the tower A air inlet pneumatic butterfly valve and the tower B air inlet pneumatic butterfly valve;
and the seventh branch passage is provided with an A tower regenerated gas outlet pneumatic butterfly valve and a B tower regenerated gas outlet pneumatic butterfly valve, and the joint of the gas outlet end of the gas-water separator and the seventh branch passage is positioned between the A tower regenerated gas outlet pneumatic butterfly valve and the B tower regenerated gas outlet pneumatic butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023154421.XU CN214345392U (en) | 2020-12-24 | 2020-12-24 | Waste heat regeneration adsorption type dryer with waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023154421.XU CN214345392U (en) | 2020-12-24 | 2020-12-24 | Waste heat regeneration adsorption type dryer with waste heat recovery device |
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| CN214345392U true CN214345392U (en) | 2021-10-08 |
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| CN202023154421.XU Active CN214345392U (en) | 2020-12-24 | 2020-12-24 | Waste heat regeneration adsorption type dryer with waste heat recovery device |
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- 2020-12-24 CN CN202023154421.XU patent/CN214345392U/en active Active
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