CN213810706U - Boiler continuous drainage waste heat recovery device - Google Patents
Boiler continuous drainage waste heat recovery device Download PDFInfo
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- CN213810706U CN213810706U CN202022475505.7U CN202022475505U CN213810706U CN 213810706 U CN213810706 U CN 213810706U CN 202022475505 U CN202022475505 U CN 202022475505U CN 213810706 U CN213810706 U CN 213810706U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a boiler continuous drainage waste heat recovery device, which comprises a closed box body, wherein a flash evaporation cavity is arranged in the closed box body, a flow guide cavity is arranged at one side of the flash evaporation cavity, and a coarse filter cavity is arranged at the other side of the flash evaporation cavity; the bottom of the coarse filter cavity is communicated with the fine filter cavity, the upper part of the fine filter cavity is provided with a communicated liquid heat exchange cavity, the upper part of the liquid heat exchange cavity is provided with a U-shaped heat exchange cavity, a U-shaped opening of the U-shaped heat exchange cavity is arranged towards the direction far away from the flash evaporation cavity, the upper part of the U-shaped heat exchange cavity is provided with a gas heat exchange cavity, the U-shaped heat exchange cavity is communicated with the liquid heat exchange cavity through a heat pipe, and the U-shaped heat exchange cavity is communicated with the gas heat exchange cavity through a heat pipe; the utility model can recycle waste heat efficiently for the continuous drainage of the boiler, can realize zero discharge of the drainage, improve the utilization rate of resources and avoid polluting the environment; the integration degree can be improved, and the occupied area is reduced.
Description
Technical Field
The utility model relates to a boiler is drainage waste heat recovery device even belongs to waste heat recovery technical field.
Background
The whole recovery and utilization of low-grade waste heat are always a problem which troubles the energy-saving industry. The low recovery rate, low use and low use are the current general current situation of the industry.
Boiler blow-down is a significant heat loss in boiler operation. In order to control the quality of the boiler steam, the boiler is designed with continuous sewage discharge (also called surface sewage discharge), namely, the boiler continuously discharges partial boiler water from the part with the highest saline-alkali concentration of the boiler water so as to reduce the salt content, the silicate content of the alkali content and the slag content in a suspended state in the boiler water. The purpose is to ensure the quality of boiler water to ensure the boiler to stably and safely operate for a long time, and the heat loss of the blowdown is also one of the important factors influencing the heat efficiency of the boiler.
The existing boiler pollution discharge waste heat recovery device recovers dead steam by using a continuous discharge flash tank, the dead steam is reused, and waste hot water is directly discharged outside; in the mode, only a small amount of exhaust steam is recovered, most of waste heat and water resources are completely wasted, energy conservation is not facilitated, and the direct discharge of waste hot water easily causes environmental pollution; in addition, the integration degree angle of the existing waste heat recovery device is lower, and the occupied area is larger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a boiler continuous drainage waste heat recovery device aiming at the defects in the background technology, which can carry out waste heat recovery and high-efficiency utilization on boiler continuous drainage, can realize zero discharge of sewage, improve the utilization rate of resources and avoid polluting the environment; the integration degree can be improved, and the occupied area is reduced.
For solving the technical problem, the utility model discloses a following technical scheme:
a boiler continuous drainage waste heat recovery device comprises a closed box body, wherein a flash evaporation cavity is arranged in the closed box body, a flow guide cavity is arranged on one side of the flash evaporation cavity, and a coarse filter cavity is arranged on the other side of the flash evaporation cavity; the bottom of the coarse filter cavity is communicated with the fine filter cavity, the upper part of the fine filter cavity is provided with a communicated liquid heat exchange cavity, the upper part of the liquid heat exchange cavity is provided with a U-shaped heat exchange cavity, a U-shaped opening of the U-shaped heat exchange cavity is arranged towards the direction far away from the flash evaporation cavity, and the upper part of the U-shaped heat exchange cavity is provided with a gas heat exchange cavity; the U-shaped heat exchange cavity is communicated with the liquid heat exchange cavity through a heat conduction pipe, and the U-shaped heat exchange cavity is communicated with the gas heat exchange cavity through a heat conduction pipe.
Furthermore, the bottom of the flash evaporation cavity is communicated with the bottom of the flow guide cavity, and the upper part of the flow guide cavity is provided with a continuous drainage inlet.
Furthermore, the top of the flash evaporation cavity is communicated with the top of the coarse filter cavity, and a filter screen is arranged in the coarse filter cavity.
Furthermore, an adsorption filter element is arranged in the fine filter cavity and is made of amino composite nano materials.
Further, the length of the heat conduction pipe in the U-shaped heat exchange cavity is one half of that of the liquid heat exchange cavity; the length of the heat conduction pipe in the U-shaped heat exchange cavity is half of that of the gas heat exchange cavity.
Furthermore, one end of the lower part of the U-shaped heat exchange cavity is communicated with the cold air inlet, and one end of the upper part of the U-shaped heat exchange cavity is communicated with the hot air outlet.
Furthermore, one side of the gas heat exchange cavity is communicated with the flash evaporation cavity through a connecting pipeline, and a delivery pump is installed on the connecting pipeline; and the other side of the gas heat exchange cavity is provided with a waste steam outlet which is communicated with a deaerator through a pipeline.
Furthermore, one side of the liquid heat exchange cavity, which is far away from the flash evaporation cavity, is provided with a recycled water outlet, and the recycled water outlet is communicated with a boiler makeup water inlet pipe.
Further, a drain outlet is formed in the bottom of the flash evaporation cavity.
Further, the bottom of the closed box body is fixedly supported through a support framework.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
the utility model discloses well even drainage flash distillation at first, even drainage after the flash distillation gets into thick filter chamber and carries out the filtration of suspended solid, gets into thin filter chamber and carries out the phosphate and adsorb, gets into liquid heat transfer chamber at last, transmits the heat to the cold air in the U type heat transfer intracavity, and even drainage after the heat transfer is used for boiler feedwater; the steam obtained by flash evaporation is pumped to a gas heat exchange cavity, the gas heat exchange cavity transfers heat to cold air in the U-shaped heat exchange cavity, and the steam after heat exchange enters a deaerator; cold air finally exchanges heat through the U-shaped heat exchange cavity to form hot air, and the hot air enters the hearth for combustion and reutilization; the utility model provides a waste heat recovery device for continuous boiler drainage, which can efficiently recover and utilize waste heat of the continuous boiler drainage, realize zero discharge of sewage, improve the utilization rate of resources and avoid pollution to the environment; the utility model discloses compact structure is reasonable, can install the degree of integrating, has reduced area greatly.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, 1-a closed box body, 2-a support framework, 3-a diversion cavity, 4-a flash evaporation cavity, 5-a coarse filter cavity, 6-a fine filter cavity, 7-a liquid heat exchange cavity, 8-a U-shaped heat exchange cavity, 9-a gas heat exchange cavity, 10-a heat conduction pipe, 11-a connecting pipeline, 12-a conveying pump, 13-a drainage inlet, 14-a sewage discharge outlet, 15-a recovered water outlet, 16-a cold air inlet, 17-a hot air outlet and 18-an exhaust steam outlet.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in figure 1, the utility model provides a boiler is waste heat recovery device that drains even, including airtight box 1, airtight box 1's bottom carries out the fixed stay through supporting framework 2.
The inside flash chamber 4 that is provided with of airtight box 1, one side of flash chamber 4 is provided with water conservancy diversion chamber 3, and the opposite side of flash chamber 4 is provided with coarse filtration chamber 5.
The bottom of the flash evaporation cavity 4 is communicated with the bottom of the diversion cavity 3, the upper part of the diversion cavity 3 is provided with a continuous drainage inlet 13, and the diversion cavity 3 is used for vertically conveying continuous drainage downwards.
The top of flash distillation chamber 4 is linked together with the top of coarse filtration chamber 5, and coarse filtration chamber 5 internally mounted has the filter screen, and the drainage that links in the flash distillation chamber 4 gets into coarse filtration chamber 5 under the effect of overflow plate and filters, filters the suspended solid in the drainage that links.
The bottom of the coarse filter cavity 5 is communicated with the fine filter cavity 6, an adsorption filter element is installed in the fine filter cavity 6, the adsorption filter element is made of amino composite nano materials, and the adsorption filter element adsorbs phosphate in continuous drainage.
The upper part of the fine filter cavity 6 is provided with a communicated liquid heat exchange cavity 7, the upper part of the liquid heat exchange cavity 7 is provided with a U-shaped heat exchange cavity 8, and a U-shaped opening of the U-shaped heat exchange cavity 8 is arranged towards the direction far away from the flash evaporation cavity 4; the upper part of the U-shaped heat exchange cavity 8 is provided with a gas heat exchange cavity 9.
The U-shaped heat exchange cavity 8 is communicated with the liquid heat exchange cavity 7 through a heat conduction pipe 10 to conduct heat, and the length of the heat conduction pipe 10 in the U-shaped heat exchange cavity 8 is half of that of the liquid heat exchange cavity 7.
The U-shaped heat exchange cavity 8 is communicated with the gas heat exchange cavity 9 through a heat conduction pipe 10 to conduct heat, and the length of the heat conduction pipe 10 in the U-shaped heat exchange cavity 8 is half of that of the gas heat exchange cavity 9.
One side of the gas heat exchange cavity 9 is communicated with the flash evaporation cavity 4 through a connecting pipeline 11, a delivery pump 12 is installed on the connecting pipeline 11, and steam obtained by flash evaporation is pumped into the gas heat exchange cavity 9; the other side of the gas heat exchange cavity 9 is provided with a dead steam outlet 18, and the dead steam outlet 18 is communicated with a deaerator through a pipeline.
One end of the lower part of the U-shaped heat exchange cavity 8 is communicated with a cold air inlet 16, one end of the upper part of the U-shaped heat exchange cavity 8 is communicated with a hot air outlet 17, the hot air outlet 17 is communicated with a hearth through a pipeline, and hot air is used for combustion and reutilization; the cold air flows in the U-shaped heat exchange cavity 8, firstly absorbs the heat of the liquid heat exchange cavity 7 and then absorbs the heat of the gas heat exchange cavity 9 in the flowing process, and is discharged through the hot air outlet 17 after heat exchange is finished.
And a recovered water outlet 15 is formed in one side, away from the flash evaporation cavity 4, of the liquid heat exchange cavity 7, the recovered water outlet 15 is communicated with a boiler make-up water inlet pipe, and recovered continuous drainage is used for boiler make-up water.
The bottom of the flash chamber 4 is provided with a drain outlet 14.
The utility model discloses a concrete theory of operation:
boiler continuous drainage enters the flow guide cavity 3 through the continuous drainage inlet 13 to be longitudinally conveyed downwards, and then enters the flash evaporation cavity 4 to be subjected to flash evaporation;
the flash-evaporated continuous drainage firstly enters a coarse filtering cavity 5 for filtering suspended matters, then enters a fine filtering cavity 6 for adsorbing phosphate, and finally enters a liquid heat exchange cavity 7, the liquid heat exchange cavity 7 transfers heat into a U-shaped heat exchange cavity 8 through a heat conduction pipe 10, and the continuous drainage after heat exchange is used for supplying water to a boiler;
steam obtained by flash evaporation is pumped to a gas heat exchange cavity 9, the gas heat exchange cavity 9 transfers heat to a U-shaped heat exchange cavity 8 through a heat conduction pipe 10, and the steam after heat exchange enters a deaerator through a dead steam outlet 18;
cold air entering from the cold air inlet 16 firstly absorbs heat at the lower part of the U-shaped heat exchange cavity 8 and then absorbs heat at the upper part of the U-shaped heat exchange cavity 8, and finally hot air obtained through heat exchange enters the hearth for combustion and reutilization.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (10)
1. The utility model provides a boiler is drainage waste heat recovery device even which characterized in that: the device comprises a closed box body (1), wherein a flash evaporation cavity (4) is arranged in the closed box body (1), a flow guide cavity (3) is arranged on one side of the flash evaporation cavity (4), and a coarse filter cavity (5) is arranged on the other side of the flash evaporation cavity (4); the bottom of the coarse filter cavity (5) is communicated with the fine filter cavity (6), the upper part of the fine filter cavity (6) is provided with a communicated liquid heat exchange cavity (7), the upper part of the liquid heat exchange cavity (7) is provided with a U-shaped heat exchange cavity (8), a U-shaped opening of the U-shaped heat exchange cavity (8) is arranged in a direction far away from the flash evaporation cavity (4), and the upper part of the U-shaped heat exchange cavity (8) is provided with a gas heat exchange cavity (9); the U-shaped heat exchange cavity (8) is communicated with the liquid heat exchange cavity (7) through a heat conduction pipe (10), and the U-shaped heat exchange cavity (8) is communicated with the gas heat exchange cavity (9) through the heat conduction pipe (10).
2. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: the bottom of the flash evaporation cavity (4) is communicated with the bottom of the flow guide cavity (3), and the upper part of the flow guide cavity (3) is provided with a continuous drainage inlet (13).
3. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: the top of the flash evaporation cavity (4) is communicated with the top of the coarse filter cavity (5), and a filter screen is arranged in the coarse filter cavity (5).
4. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: and an adsorption filter element is arranged in the fine filter cavity (6), and is made of amino composite nano materials.
5. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: the length of the heat conducting pipe (10) in the U-shaped heat exchange cavity (8) is half of that of the liquid heat exchange cavity (7); the length of the heat conducting pipe (10) in the U-shaped heat exchange cavity (8) is half of that of the gas heat exchange cavity (9).
6. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: one end of the lower part of the U-shaped heat exchange cavity (8) is communicated with a cold air inlet (16), and one end of the upper part of the U-shaped heat exchange cavity (8) is communicated with a hot air outlet (17).
7. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: one side of the gas heat exchange cavity (9) is communicated with the flash evaporation cavity (4) through a connecting pipeline (11), and a delivery pump (12) is installed on the connecting pipeline (11); the other side of the gas heat exchange cavity (9) is provided with a dead steam outlet (18), and the dead steam outlet (18) is communicated with a deaerator through a pipeline.
8. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: and a recycled water outlet (15) is arranged on one side of the liquid heat exchange cavity (7) far away from the flash evaporation cavity (4), and the recycled water outlet (15) is communicated with a boiler makeup water inlet pipe.
9. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: and a sewage draining outlet (14) is formed in the bottom of the flash evaporation cavity (4).
10. The boiler continuous drainage waste heat recovery device according to claim 1, characterized in that: the bottom of the closed box body (1) is fixedly supported by a supporting framework (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022475505.7U CN213810706U (en) | 2020-10-31 | 2020-10-31 | Boiler continuous drainage waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022475505.7U CN213810706U (en) | 2020-10-31 | 2020-10-31 | Boiler continuous drainage waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213810706U true CN213810706U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022475505.7U Active CN213810706U (en) | 2020-10-31 | 2020-10-31 | Boiler continuous drainage waste heat recovery device |
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| Country | Link |
|---|---|
| CN (1) | CN213810706U (en) |
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2020
- 2020-10-31 CN CN202022475505.7U patent/CN213810706U/en active Active
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