CN110715286A - Still kettle and boiler heat energy recovery system - Google Patents
Still kettle and boiler heat energy recovery system Download PDFInfo
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- CN110715286A CN110715286A CN201911154244.4A CN201911154244A CN110715286A CN 110715286 A CN110715286 A CN 110715286A CN 201911154244 A CN201911154244 A CN 201911154244A CN 110715286 A CN110715286 A CN 110715286A
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- water
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- inlet pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
Abstract
The invention relates to the technical field of environmental protection and energy conservation, and provides a still kettle and a boiler heat energy recovery system. The system comprises an autoclave, a boiler for providing steam for the autoclave, a gas-water heat exchanger and a water-water heat exchanger, wherein the gas-water heat exchanger comprises a gas flow passage for heat exchange and temperature reduction and a water flow passage for heat exchange and temperature rise, and the water-water heat exchanger comprises a water flow passage II for heat exchange and temperature reduction and a water flow passage III for heat exchange and temperature rise; residual steam discharged by the still kettle and steam generated by boiler surface pollution discharge are communicated with a primary side inlet pipe a, a secondary side inlet pipe a is communicated with boiler feed water, and a secondary side outlet pipe a is communicated with a boiler; condensed water discharged by the still kettle and high-temperature hot water generated by blowdown at the bottom of the boiler are communicated with the primary side inlet pipe b, the secondary side inlet pipe b is communicated with boiler feed water, and the secondary side outlet pipe b is communicated with the boiler. The energy consumption cost in the application process of the still kettle is reduced, and the effects of high efficiency, energy conservation and emission reduction are achieved.
Description
Technical Field
The invention belongs to the technical field of environmental protection and energy conservation, and particularly relates to a still kettle and a boiler heat energy recovery system.
Background
The still kettle is a large pressure container with large volume and heavy weight. The autoclave has wide application, and is widely applied to autoclave curing of building materials such as aerated concrete blocks, concrete pipe piles, sand-lime bricks, coal-lime bricks and the like, so that hydrothermal reaction of Cao-Si 02-H2O is completed in the autoclave. The energy consumption of the still kettle is high in the application process, the residual heat energy is difficult to recover, the still kettle generally adopts a mode of directly discharging high-pressure steam and high-temperature condensed water in the atmosphere, a large water tank is mostly adopted in the existing industry to recover the waste heat of the still kettle, the efficiency is low, the recovery amount is very small, and the whole industry is in a rough type management stage with very low energy recovery utilization rate.
Disclosure of Invention
The invention aims to provide a still kettle and a boiler heat energy recovery system, which can be used for recovering and utilizing the residual heat energy of the still kettle to the maximum extent in the application process of the still kettle.
In order to achieve the purpose, the invention adopts the following technical scheme: a still kettle and boiler heat energy recovery system comprises a still kettle, a boiler for providing steam for the still kettle, a gas-water heat exchanger and a water-water heat exchanger, wherein the gas-water heat exchanger comprises a gas flow passage and a water flow passage I for exchanging heat, the water-water heat exchanger comprises a water flow passage II and a water flow passage III for exchanging heat, an inlet and an outlet of the gas flow passage are respectively a primary side inlet pipe a and a primary side outlet pipe a, an inlet and an outlet of the water flow passage I are respectively a secondary side inlet pipe a and a secondary side outlet pipe a, an inlet and an outlet of the water flow passage II are respectively a primary side inlet pipe b and a primary side outlet pipe b, and an inlet and an outlet of the water flow passage III are respectively a secondary side inlet pipe b and a secondary side outlet pipe b; residual steam discharged by the still kettle and steam generated by surface pollution discharge of the boiler are communicated with the primary side inlet pipe a, the secondary side inlet pipe a is communicated with boiler feed water, and the secondary side outlet pipe a is communicated with the boiler; and the condensed water discharged by the still kettle and the high-temperature hot water generated by blowdown at the bottom of the boiler are communicated with the primary side inlet pipe b, the secondary side inlet pipe b is communicated with boiler feed water, and the secondary side outlet pipe b is communicated with the boiler.
Optionally, the primary side outlet pipe a is communicated with the primary side inlet pipe b, the secondary side outlet pipe a is further communicated with the secondary side inlet pipe b, and the secondary side outlet pipe b is further communicated with the secondary side inlet pipe a.
Optionally, the system further comprises a condensation buffer tank connected with the still kettle, the condensation buffer tank is used for collecting condensed water discharged from the still kettle, and the condensation buffer tank is communicated with the primary side inlet pipe b.
Optionally, the boiler further comprises a hot water storage tank connected with the boiler, and the secondary side outlet pipe a and the secondary side outlet pipe b are communicated with the hot water storage tank.
Optionally, the boiler further comprises a steam collecting chamber connected with the primary side inlet pipe a, and the residual steam discharged from the still kettle and the steam generated by the boiler surface pollution discharge are communicated with the steam collecting chamber.
Optionally, the system further comprises a sewage filtering chamber connected with the primary side inlet pipe b, and the condensed water discharged from the still kettle and the high-temperature hot water produced by blowdown from the bottom of the boiler are communicated with the sewage filtering chamber.
Optionally, the system further comprises a wastewater treatment tank, and the primary side outlet pipe b is connected with the wastewater treatment tank.
Optionally, the system further comprises a clean water tank connected with the wastewater treatment tank, and the clean water tank is communicated with the secondary side inlet pipe a, the secondary side inlet pipe b or the boiler.
Optionally, the system further comprises a plurality of primary steam distributors arranged between the autoclaves and the boiler, and a plurality of distribution valves are arranged on the primary steam distributors corresponding to the plurality of air inlets of the autoclaves.
Optionally, the steam distribution device further comprises a second-stage steam distribution chamber arranged between the air outlet and the air inlet of the still kettle, and the second-stage steam distribution chamber is provided with a plurality of distribution valves corresponding to the plurality of air inlets of the still kettle.
Compared with the prior art, the heat recovery device has the advantages that the air-water heat exchanger is adopted to recover heat energy of residual steam discharged by the still kettle and steam generated by surface pollution discharge of the boiler, low-temperature boiler feed water flows into the secondary side inlet pipe a, is subjected to heat exchange and temperature rise through the air-water heat exchanger, and flows out of the secondary side outlet pipe a to provide preheating water for the boiler; the method comprises the following steps that a water-water heat exchanger is adopted to recover heat energy of condensed water discharged by an autoclave and high-temperature hot water generated by blowdown at the bottom of a boiler, low-temperature boiler feed water flows into a secondary side inlet pipe b, is subjected to heat exchange and temperature rise through the water-water heat exchanger, and flows out of a secondary side outlet pipe b to provide preheated water for the boiler; in summary, the system can recover heat energy of high-temperature gas and high-temperature liquid generated by the autoclave and the boiler through the gas-water heat exchanger and the water-water heat exchanger, the recovery utilization rate of waste heat is up to 90%, the energy consumption cost in the application process of the autoclave is greatly reduced, and the effects of high efficiency, energy conservation and emission reduction are achieved.
Drawings
Fig. 1 is a schematic view of the arrangement of the present invention.
Reference numerals:
1. a still kettle; 2. a boiler; 3. a gas-water heat exchanger; 31. a primary side inlet pipe a; 32. a primary side outlet pipe a; 33. a secondary side inlet pipe a; 34. a secondary side outlet pipe a; 4. a water-water heat exchanger; 41. a primary side inlet pipe b; 42. a primary side outlet pipe b; 43. a secondary side inlet pipe b; 44. a secondary side outlet pipe b; 5. a condensation buffer tank; 6. a hot water storage tank; 7. a vapor collection chamber; 8. a sewage filtering chamber; 9. a wastewater treatment tank; 10. a clear water tank; 11. a primary steam distributor; 12. a secondary steam distribution chamber.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
As shown in fig. 1, the present invention provides a steam-pressure kettle and boiler heat recovery system, including a steam-pressure kettle 1, a boiler 2 for providing steam to the steam-pressure kettle 1, a gas-water heat exchanger 3 and a water-water heat exchanger 4, wherein the gas-water heat exchanger 3 includes a gas flow passage for heat exchange and temperature reduction and a water flow passage for heat exchange and temperature rise, the water-water heat exchanger 4 includes a water flow passage two for heat exchange and temperature reduction and a water flow passage three for heat exchange and temperature rise, the gas-water heat exchanger 3 includes: the primary side inlet pipe a31 and the primary side outlet pipe a32 are used for the inflow and outflow of high-temperature gas, and the secondary side inlet pipe a33 and the secondary side outlet pipe a34 are used for the inflow and outflow of low-temperature boiler feed water; the water-water heat exchanger 4 includes: the primary side inlet pipe b41 and the primary side outlet pipe b42 are used for the inflow and outflow of high-temperature liquid, and the secondary side inlet pipe b43 and the secondary side outlet pipe b44 are used for the inflow and outflow of low-temperature boiler feed water; residual steam discharged by the autoclave 1 and steam generated by surface pollution discharge of the boiler 2 are communicated with a primary side inlet pipe a 31; the condensed water discharged from the autoclave 1 and the high-temperature hot water generated by the blow-off from the bottom of the boiler 2 are communicated with the primary side inlet pipe b 41.
Compared with the prior art, the steam-water heat exchanger 3 is adopted to recover heat energy of residual steam discharged by the still kettle 1 and steam generated by surface pollution discharge of the boiler 2, low-temperature boiler feed water flows into the secondary side inlet pipe a33 to be subjected to heat exchange and temperature rise through the steam-water heat exchanger 3, and then flows out of the secondary side outlet pipe a34 to provide preheating water for the boiler 2; the water-water heat exchanger 4 is adopted to recover heat energy of condensed water discharged from the autoclave 1 and high-temperature hot water produced by blowdown at the bottom of the boiler 2, low-temperature boiler feed water flows into a secondary side inlet pipe b43 to be subjected to heat exchange and temperature rise through the water-water heat exchanger 4, and then flows out of a secondary side outlet pipe b44 to provide preheated water for the boiler 2; in summary, in the system of the present application, both the high-temperature gas and the high-temperature liquid generated by the autoclave 1 and the boiler 2 can be subjected to heat energy recovery through the gas-water heat exchanger 3 and the water-water heat exchanger 4, the recovery utilization rate of the waste heat is as high as 90%, the energy consumption cost in the application process of the autoclave 1 is greatly reduced, and the functions of high efficiency, energy saving and emission reduction are achieved.
In some embodiments, the primary side outlet pipe a32 is communicated with the primary side inlet pipe b41, and after the residual steam discharged from the autoclave 1 and the steam generated by the surface pollution discharge of the boiler 2 are subjected to heat exchange and temperature reduction through the gas-water heat exchanger 3, the steam is condensed into high-temperature water, and the high-temperature water can be introduced into the water-water heat exchanger 4 for heat exchange and temperature reduction again; the secondary side outlet pipe a34 is also communicated with a secondary side inlet pipe b43, boiler feed water heated by heat exchange of the gas-water heat exchanger 3 can be subjected to further heat exchange heating through the water-water heat exchanger 4, the secondary side outlet pipe b44 is also communicated with a secondary side inlet pipe a33, if the temperature of the boiler feed water is still low after the boiler feed water is heated by heat exchange of the water-water heat exchanger 4, real-time temperature monitoring can be carried out through a temperature monitor, the boiler feed water can be returned to the gas-water heat exchanger 3 and the water-water heat exchanger 4 again to be subjected to heat exchange heating again, and finally boiler feed water with high temperature is obtained.
In some embodiments, the system further comprises a condensation buffer tank 5 connected to the still kettle 1, the condensation buffer tank 5 is used for collecting condensed water discharged from the still kettle 1, and the condensation buffer tank 5 is communicated with the primary side inlet pipe b 41. The condensation buffer tank 5 is used for collecting condensed water generated by the still kettle 1 and then conveying the condensed water to the water-water heat exchanger 4 for heat exchange.
In some embodiments, the boiler further comprises a hot water storage tank 6 connected to the boiler 2, and the secondary side outlet pipe a34 and the secondary side outlet pipe b44 are communicated with the hot water storage tank 6. The boiler feed water heated by the heat exchange of the gas-water heat exchanger 3 and the water-water heat exchanger 4 can be temporarily stored in the hot water storage tank 6, and the hot water storage tank 6 can supply water to the boiler 2 and other facilities or processes needing water in a production workshop.
In some embodiments, the steam collecting chamber 7 is connected to the primary side inlet pipe a31, the residual steam discharged from the autoclave 1 and the steam generated by the surface blowdown of the boiler 2 are communicated with the steam collecting chamber 7, and cleaning materials such as activated carbon can be arranged in the steam collecting chamber 7 to filter the gas to a certain extent, so as to prevent the contaminants from directly flowing into the gas-water heat exchanger 3 and the water-water heat exchanger 4 to cause pollution.
In some embodiments, the system further comprises a sewage filtering chamber 8 connected with the primary side inlet pipe b41, condensed water discharged from the autoclave 1 and high-temperature hot water generated by blowdown from the bottom of the boiler 2 are communicated with the sewage filtering chamber 8, and cleaning materials such as activated carbon can be arranged in the sewage filtering chamber 8 to filter liquid to a certain extent, so that the sewage is prevented from directly flowing into the water-water heat exchanger 4 to pollute the water-water heat exchanger.
In some embodiments, the device further comprises a wastewater treatment tank 9, the primary side outlet pipe b42 is connected with the wastewater treatment tank 9, and wastewater which is subjected to heat exchange and temperature reduction through the gas-water heat exchanger 3 and the water-water heat exchanger 4 is discharged into the wastewater treatment tank 9 for final cleaning treatment, so that the environment pollution caused by directly discharging the wastewater is avoided.
In some embodiments, the clean water tank 10 is connected with the wastewater treatment tank 9, the clean water tank 10 is communicated with the secondary side inlet pipe a33, the secondary side inlet pipe b43 or the boiler 2, and the clean water treated by the wastewater treatment tank 9 enters the clean water tank 10 for storage, which can be used as a boiler feed water source, so that water in the whole system can be effectively recycled, and waste of water resources is avoided.
In some embodiments, the system further comprises a plurality of primary steam distributors 11 arranged between the autoclaves 1 and the boiler 2, wherein the plurality of autoclaves 1 are arranged, and the plurality of distribution valves are arranged on the primary steam distributors 11 corresponding to the air inlets of the plurality of autoclaves 1. Still kettle 1 sets up a plurality of works, in order to conveniently regulate and control the utilization of steam, adopts one-level steam distributor 11 to carry out the transfer, corresponds opens distribution valve and valve size and provides steam for still kettle 1.
In some embodiments, the steam distribution device further comprises a secondary steam distribution chamber 12 arranged between the air outlet and the air inlet of the autoclave 1, and the secondary steam distribution chamber 12 is provided with a plurality of distribution valves corresponding to the air inlets of the plurality of autoclaves 1. Steam discharged from an exhaust port of the still kettle 1 can exchange heat through the gas-water heat exchanger 3, can also be collected in a centralized manner through the secondary steam distribution chamber 12, and then is redistributed to each still kettle 1 by secondary utilization, and how to utilize the discharged steam can be specifically selected according to actual working conditions.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a still kettle and boiler heat recovery system, includes still kettle (1) and for providing boiler (2) of steam still kettle (1), its characterized in that: the heat exchanger comprises a gas-water heat exchanger (3) and a water-water heat exchanger (4), wherein the gas-water heat exchanger (3) comprises a gas flow passage and a water flow passage I which exchange heat with each other, the water-water heat exchanger (4) comprises a water flow passage II and a water flow passage III which exchange heat with each other, an inlet and an outlet of the gas flow passage are correspondingly a primary side inlet pipe a (31) and a primary side outlet pipe a (32), an inlet and an outlet of the water flow passage I are correspondingly a secondary side inlet pipe a (33) and a secondary side outlet pipe a (34), an inlet and an outlet of the water flow passage II are correspondingly a primary side inlet pipe b (41) and a primary side outlet pipe b (42), and an inlet and an outlet of the water flow passage III are correspondingly a secondary side inlet pipe b (43) and a secondary side;
residual steam discharged by the autoclave (1) and steam generated by surface pollution discharge of the boiler (2) are communicated with the primary side inlet pipe a (31), the secondary side inlet pipe a (33) is communicated with boiler water supply, and the secondary side outlet pipe a (34) is communicated with the boiler (2);
condensed water discharged by the still kettle (1) and high-temperature hot water generated by blowdown at the bottom of the boiler (2) are communicated with the primary side inlet pipe b (41), the secondary side inlet pipe b (43) is communicated with boiler water supply, and the secondary side outlet pipe b (44) is communicated with the boiler (2).
2. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the primary side outlet pipe a (32) is communicated with the primary side inlet pipe b (41), the secondary side outlet pipe a (34) is also communicated with the secondary side inlet pipe b (43), and the secondary side outlet pipe b (44) is also communicated with the secondary side inlet pipe a (33).
3. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the steam-water separator further comprises a condensation buffer tank (5) connected with the still kettle (1), wherein the condensation buffer tank (5) is used for collecting condensed water discharged from the still kettle (1), and the condensation buffer tank (5) is communicated with the primary side inlet pipe b (41).
4. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the boiler is characterized by further comprising a hot water storage tank (6) connected with the boiler (2), and the secondary side outlet pipe a (34) and the secondary side outlet pipe b (44) are communicated with the hot water storage tank (6).
5. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the steam collecting chamber (7) is connected with the primary side inlet pipe a (31), and residual steam discharged by the still kettle (1) and steam generated by surface pollution discharge of the boiler (2) are communicated with the steam collecting chamber (7).
6. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the device is characterized by further comprising a sewage filtering chamber (8) connected with the primary side inlet pipe b (41), and the condensed water discharged from the still kettle (1) and the high-temperature hot water generated by pollution discharge at the bottom of the boiler (2) are communicated with the sewage filtering chamber (8).
7. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the device also comprises a wastewater treatment tank (9), and the primary side outlet pipe b (42) is connected with the wastewater treatment tank (9).
8. The autoclave and boiler heat energy recovery system according to claim 7, wherein: the water purifying device is characterized by further comprising a water purifying tank (10) connected with the wastewater treatment tank (9), wherein the water purifying tank (10) is communicated with the secondary side inlet pipe a (33), the secondary side inlet pipe b (43) or the boiler (2).
9. The autoclave and boiler heat energy recovery system according to claim 1, wherein: the steam boiler is characterized by further comprising a plurality of primary steam distributors (11) arranged between the still kettles (1) and the boiler (2), wherein the plurality of still kettles (1) are arranged, and the plurality of distribution valves are arranged on the primary steam distributors (11) corresponding to the plurality of air inlets of the still kettles (1).
10. The autoclave and boiler heat energy recovery system according to claim 9, wherein: the steam distribution device is characterized by further comprising a secondary steam distribution chamber (12) arranged between the air outlet and the air inlet of the still kettle (1), wherein a plurality of distribution valves are arranged in the secondary steam distribution chamber (12) corresponding to the air inlets of the still kettle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154244.4A CN110715286A (en) | 2019-11-22 | 2019-11-22 | Still kettle and boiler heat energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154244.4A CN110715286A (en) | 2019-11-22 | 2019-11-22 | Still kettle and boiler heat energy recovery system |
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| Publication Number | Publication Date |
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| CN110715286A true CN110715286A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911154244.4A Pending CN110715286A (en) | 2019-11-22 | 2019-11-22 | Still kettle and boiler heat energy recovery system |
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| CN (1) | CN110715286A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128725A (en) * | 2020-09-24 | 2020-12-25 | 贵州长通装配式建材有限公司 | System and method for utilizing waste heat of still kettle for producing aerated plate |
| CN113146817A (en) * | 2021-03-04 | 2021-07-23 | 贵州迪森元能源科技有限公司 | Automatic control system for residual gas utilization |
| CN116045266A (en) * | 2022-12-27 | 2023-05-02 | 广东鸿业管桩有限公司 | Energy-saving system and method for comprehensive utilization of waste heat of autoclave and boiler |
-
2019
- 2019-11-22 CN CN201911154244.4A patent/CN110715286A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128725A (en) * | 2020-09-24 | 2020-12-25 | 贵州长通装配式建材有限公司 | System and method for utilizing waste heat of still kettle for producing aerated plate |
| CN113146817A (en) * | 2021-03-04 | 2021-07-23 | 贵州迪森元能源科技有限公司 | Automatic control system for residual gas utilization |
| CN116045266A (en) * | 2022-12-27 | 2023-05-02 | 广东鸿业管桩有限公司 | Energy-saving system and method for comprehensive utilization of waste heat of autoclave and boiler |
| CN116045266B (en) * | 2022-12-27 | 2023-08-08 | 广东鸿业管桩有限公司 | Energy-saving system and method for comprehensive utilization of waste heat of autoclave and boiler |
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