CN114705075A - Evaporate foster equipment waste heat recovery system and aerated concrete production line - Google Patents
Evaporate foster equipment waste heat recovery system and aerated concrete production line Download PDFInfo
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- CN114705075A CN114705075A CN202210424648.6A CN202210424648A CN114705075A CN 114705075 A CN114705075 A CN 114705075A CN 202210424648 A CN202210424648 A CN 202210424648A CN 114705075 A CN114705075 A CN 114705075A
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- 238000011084 recovery Methods 0.000 title claims abstract description 79
- 239000002918 waste heat Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 238000012546 transfer Methods 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims description 38
- 239000007924 injection Substances 0.000 claims description 38
- 238000001914 filtration Methods 0.000 claims description 23
- 238000001704 evaporation Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims 2
- 239000010908 plant waste Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000284 resting effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000008234 soft water Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- -1 chemical engineering Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a steam curing equipment waste heat recovery system and an aerated concrete production line, wherein the steam curing equipment waste heat recovery system comprises: the steam curing device, the steam heat exchange unit and the condensed water heat exchange unit; the steam heat exchange unit comprises a first heat exchange chamber communicated with a residual steam discharge port of the steam curing equipment, and a first steam discharge port is also formed in the top of the first heat exchange chamber; the condensate water heat exchange unit comprises a second heat exchange chamber communicated with a high-temperature condensate water discharge port of the steam curing equipment, and the second heat exchange chamber is communicated with the first steam discharge port through a secondary recovery pipeline. This application first heat transfer room directly communicates with the surplus vapour discharge port that evaporates foster equipment, and surplus vapour can contact with the cold source intensive mixing in the first heat transfer room, and heat exchange efficiency is high, and unable steam that utilizes can also let in the comdenstion water heat transfer unit through the second grade recovery line in the steam heat transfer unit reuse moreover for the waste heat obtains make full use of, avoids the wasting of resources, has improved the utilization ratio of the energy.
Description
Technical Field
The invention relates to the technical field of waste heat recovery, in particular to a waste heat recovery system of steam curing equipment and an aerated concrete production line.
Background
The steam curing kettle is a large-scale pressure container, has wide application, and is widely applied to production projects which need pressure steam curing production process, such as building materials, chemical engineering, medicine, aerospace industry, military industry and the like. When the steam curing kettle is used for steam curing processing materials, a large amount of high-temperature steam can be conveyed to the inside of the steam curing kettle, after the steam curing is finished, a large amount of high-temperature condensed water and high-temperature high-pressure steam generated in the steam curing process are mostly directly discharged into the air, but the condensed water and the steam at the moment have very large heat energy, and the heat energy is seriously wasted due to direct discharge and is not environment-friendly.
Among the relevant prior art, the unnecessary steam in the cauldron of raising by vaporization is let in to indirect heating equipment, and then plays steam recovery's effect, but indirect heating equipment adopts heat transfer fin to carry out the heat transfer mostly, and steam heat exchange efficiency is low, and the steam that can't utilize in the indirect heating equipment behind the heat transfer is mostly all directly arranged, because also there is certain heat in these steam, consequently, the energy that can cause is extravagant.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of low heat exchange efficiency of the steam curing kettle waste heat recovery system and energy waste caused by directly discharging steam which cannot be utilized in steam heat exchange equipment in the prior art, so that the steam curing equipment waste heat recovery system and the aerated concrete production line with high heat exchange efficiency and high energy utilization rate are provided.
In order to solve the above problems, in a first aspect of the present invention, a waste heat recovery system of a steam-curing device is provided, including a steam-curing device, a steam heat exchange unit, and a condensed water heat exchange unit, wherein the steam-curing device is adapted to provide a steam heat source for a heat-using device; the steam heat exchange unit comprises a first heat exchange chamber communicated with a residual steam discharge port of the steam curing equipment, and a steam discharge port is also formed in the top of the first heat exchange chamber; the condensate water heat exchange unit comprises a second heat exchange chamber communicated with a high-temperature condensate water discharge port of the steam curing equipment, and the second heat exchange chamber is communicated with the steam discharge port through a secondary recovery pipeline.
Optionally, a first steam inlet is arranged on the first heat exchange chamber, the first steam inlet is connected with a residual steam discharge port of the steam curing equipment through a primary recovery pipeline, the secondary recovery pipeline is communicated with the primary recovery pipeline through a first communication pipeline, and a switch valve is arranged on the first communication pipeline. And a second steam inlet is formed in the second heat exchange chamber, and the secondary recovery pipeline is connected between the first steam discharge port and the second steam inlet.
Optionally, the steam-curing equipment comprises a still kettle, the still kettle is connected with a flash evaporation device, and an exhaust port of the flash evaporation device is communicated with the primary recovery pipeline through a second communication pipeline.
Optionally, a second steam discharge port is further arranged on the second heat exchange chamber, and the second steam discharge port is connected with the hot water storage tank, so that residual steam in the second heat exchange chamber can be introduced into the hot water storage tank; and/or a third steam discharge port is further arranged on the hot water storage tank and connected with a cooling tower, the cooling tower is connected with a recovery pool, and a water discharge port connected with the recovery pool is further arranged at the bottom of the second heat exchange chamber.
Optionally, the second heat exchange chamber is communicated with a condensed water discharge port of the steam-curing equipment through a condensed water discharge pipeline, a first filtering unit is arranged on the condensed water discharge pipeline, and the first filtering unit is used for filtering impurities in the high-temperature condensed water discharged into the second heat exchange chamber; and/or, still be equipped with cold source entry and cold source export on the first heat transfer room, the cold source entry is suitable for and is connected with the water pipe, the cold source export is suitable for and the boiler end intercommunication of intaking, the boiler is used for right heat supply is carried out with the thermal equipment.
Optionally, the steam heat exchange unit further comprises a steam injector, the steam injector is arranged in the first heat exchange chamber, the steam injector is provided with a plurality of injection holes, and the plurality of injection holes are suitable for uniformly injecting the steam introduced by the steam curing equipment into the first heat exchange chamber so as to be in sufficient contact with a cold source in the first heat exchange chamber for heat exchange.
Optionally, the steam injector comprises a main injection pipeline and a plurality of branch injection pipelines, and the air inlet end of the main injection pipeline is communicated with the residual steam discharge port of the steam-curing equipment; the branch injection pipelines are arranged on two sides of the main injection pipeline at intervals, and a plurality of injection holes are formed in the branch injection pipelines at intervals.
Optionally, an air pressure balancing unit is further arranged on the first heat exchange chamber and/or the second heat exchange chamber, the air pressure balancing unit comprises an air pressure balancing pipe and a one-way circulation structure, and the air pressure balancing pipe is arranged at the top of the first heat exchange chamber and/or the second heat exchange chamber; the one-way circulation structure is arranged on the air pressure balance pipe and is configured to enable air to flow in a one-way mode from the outside of the heat exchange chamber to the inside of the heat exchange chamber so as to prevent steam in the heat exchange chamber from escaping.
Optionally, the condensed water heat exchange unit is adapted to exchange heat with a circulating water heat source of the heat utilization equipment, the second heat exchange chamber is provided with a circulating water inlet and a circulating water outlet, the circulating water heat source of the heat utilization equipment is led into the second heat exchange chamber from the circulating water inlet, exchanges heat, and then flows back to the heat utilization equipment from the circulating water outlet.
Optionally, the heat utilization equipment and the circulating water inlet are connected through a first pipeline, the circulating water outlet and the heat utilization equipment are connected through a second pipeline, the first pipeline is provided with a second filtering unit, and the second pipeline is provided with a pumping unit.
Optionally, the heat utilization device comprises a resting chamber and a drying chamber, and the first pipeline comprises a first branch pipeline and a second branch pipeline which are respectively communicated with the resting chamber and the drying chamber; the second pipeline comprises a third branch pipeline and a fourth branch pipeline which are respectively communicated with the static curing chamber and the drying chamber, and the third branch pipeline and the fourth branch pipeline are respectively provided with the pumping unit and the control valve.
In a second aspect of the invention, an aerated concrete production line is provided, which comprises the waste heat recovery system of the steam curing equipment.
The invention has the following advantages:
1. by utilizing the technical scheme of the invention, the first heat exchange chamber is directly communicated with the residual steam discharge port of the steam curing equipment, so that high-temperature steam recovered by the steam heat exchange unit can be fully mixed and contacted with a cold source in the first heat exchange chamber, and the heat exchange efficiency is high. And this application can be retrieved the waste heat of the high temperature comdenstion water that evaporates the curing equipment and discharge through the comdenstion water heat transfer unit that sets up for the waste heat recovery system that this application provided can enough retrieve the heat of the residual steam of evaporating the curing equipment and can retrieve the heat of high temperature comdenstion water again, fully retrieves the waste heat of evaporating the curing equipment.
2. In this application through second grade recovery pipeline intercommunication between second heat transfer room and the first heat transfer room for reuse in the steam heat transfer unit can let in the comdenstion water heat transfer unit through second grade recovery pipeline to the steam that can't utilize, thereby makes the steam waste heat obtain abundant utilization, avoids the wasting of resources, has improved the utilization ratio of the energy. Therefore, the technical scheme of the invention overcomes the defects of low heat exchange efficiency and low energy utilization rate of the waste heat recovery system of the steam curing equipment in the prior art.
3. Through first intercommunication pipeline intercommunication between second grade recovery pipeline and the one-level recovery pipeline in this application, just be provided with the ooff valve on the first pipeline, so design, when the circulating water heat source in the second heat transfer chamber of needs rapid heating, steerable the ooff valve is opened, and the high temperature steam that will evaporate the curing equipment and discharge directly lets in the second heat transfer chamber in, heats the circulating water heat source jointly with the high temperature comdenstion water in the second heat transfer chamber, improves heating efficiency, satisfies different user demands.
4. This application can guarantee effectively that the indoor outer atmospheric pressure of heat transfer is balanced through the atmospheric pressure balanced unit that sets up, avoids appearing the negative pressure in the heat transfer room, leads to cold source or the unable exhaust phenomenon of circulating water heat source to take place. And through the one-way circulation structure that sets up on the atmospheric pressure balance pipe, the one-way circulation structure configuration is for making the air by the outside one-way circulation of the direction to inside of heat transfer room to prevent the steam in the heat transfer room to escape, avoided the waste problem of heat energy that the steam in the heat transfer room easily escapes through the atmospheric pressure balance pipe and cause effectively, also improved staff's security simultaneously, avoid high temperature steam to escape the staff that burns.
5. This application is provided with second steam discharge port on second heat transfer room, and will second steam discharge port links to each other with the hot water storage tank to can let in the surplus vapour in the second heat transfer room to the hot water storage tank, heat the water source in the hot water storage tank, thereby realize the multistage recycle of steam waste heat. The top of hot water storage tank still is equipped with the third steam discharge port, and will the third steam discharge port links to each other with the cooling tower, will the cooling tower inserts the recovery pond for unnecessary steam in the hot water storage tank can condense into water and discharge to the recovery pond, thereby has realized the zero release of steam, 100% recycle, has greatly improved energy utilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 shows a schematic diagram of a waste heat recovery system of a steam-curing device in an embodiment;
FIG. 2 shows a schematic diagram of the steam heat exchange unit of FIG. 1;
FIG. 3 shows a schematic diagram of the condensed water heat exchange unit of FIG. 1;
FIG. 4 shows a schematic top view of the steam ejector of FIG. 1;
description of reference numerals:
1. a steam heat exchange unit; 11. a first heat exchange chamber; 12. a steam ejector; 121. a main injection line; 122. a branch injection line; 1221. an injection hole; 1222. jetting an air flow; 13. an air pressure balancing unit; 131. a pressure balance tube; 132. a one-way flow structure; 101. a tap water pipe; 102. a second drain line; 2. a condensed water heat exchange unit; 21. a second heat exchange chamber; 221. a circulating water inlet; 222. a circulating water outlet; 201. a secondary recovery pipeline; 2011. a first on-off valve; 202. a first communicating pipe; 2021. a second on-off valve; 203. a first exhaust line; 204. a first drain line; 3. steam curing equipment; 31. a first still kettle; 32. a second still kettle; 33. a flash evaporation device; 331. a second communication line; 34. a sedimentation tank; 35. a first filter unit; 301. a primary recovery pipeline; 302. a condensed water discharge line; 303. an air guide pipeline; 4. a heat-using device; 41. a resting room; 42. a drying chamber; 401. a first pipeline; 4011. a second filtering unit; 402. a second pipeline; 4021. a pumping unit; 4022. a control valve; 5. a soft water tank; 6. a boiler; 7. a hot water storage tank; 8. a stirring main machine; 9. a cooling tower; 10. a recovery tank; 110. a liquid level detection unit; 120. a temperature detection unit; 130. a pressure detection unit.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
As shown in fig. 1 to 4, the embodiment provides a waste heat recovery system of a steam-curing device, which includes a steam-curing device 3, a steam heat exchange unit 1, and a condensed water heat exchange unit 2, where the steam-curing device 3 is adapted to provide a steam heat source for a heat-using device 4; the steam heat exchange unit 1 comprises a first heat exchange chamber 11 communicated with a residual steam discharge port of the steam curing equipment 3.
Utilize above-mentioned technical scheme, first heat transfer chamber 11 directly communicates with the surplus vapour discharge port of steaming up equipment 3 to make the high temperature steam that steam heat transfer unit 1 retrieved can with the cold source intensive mixing contact in the first heat transfer chamber 11, compare in carrying out the heat transfer through heat transfer fin or heat exchange tube, heat exchange efficiency is higher.
Further, as shown in fig. 1 to 3, the condensed water heat exchange unit 2 includes a second heat exchange chamber 21, and the second heat exchange chamber 21 is adapted to communicate with a high-temperature condensed water discharge port of the steam curing apparatus 3. Utilize above-mentioned technical scheme, through the comdenstion water heat transfer unit 2 that sets up, can retrieve the waste heat of the high temperature comdenstion water that evaporates the curing apparatus 3 and discharge for the waste heat recovery system that this application provided can enough retrieve the heat of the residual steam of evaporating curing apparatus 3 and can retrieve the heat of high temperature comdenstion water again, fully retrieves the waste heat of evaporating curing apparatus 3.
Further, a first steam discharge port is arranged on the first heat exchange chamber 11, and the second heat exchange chamber 21 is communicated with the first steam discharge port at the top of the first heat exchange chamber 11 through a secondary recovery pipeline 201. So set up for steam in the steam heat exchange unit 1 can let in condensed water heat exchange unit 2 through second grade recovery pipeline 201 and reuse, thereby makes the steam waste heat obtain abundant utilization, avoids the wasting of resources, has improved the utilization ratio of the energy, has solved the defect that steam curing equipment waste heat recovery system heat exchange efficiency and energy utilization among the prior art are low.
In this embodiment, the high-temperature condensate water that comdenstion water heat transfer unit 2 was retrieved directly mixes the contact with the circulating water heat source in the second heat exchange chamber 21, compares in carrying out the heat transfer through heat transfer fin or heat exchange tube, and heat exchange efficiency is higher, can the rapid heating circulating water heat source.
In this embodiment, the condensed water heat exchange unit 2 is suitable for exchanging heat with a circulating water heat source of the heat utilization device 4, and of course, the condensed water heat exchange unit 2 may also exchange heat with other cold sources.
Optionally, said first steam discharge outlet is located at the top position of the first heat exchange chamber 11, preferably said first steam discharge outlet is opened on the top wall of the first heat exchange chamber 11.
Further, a second steam inlet is provided at the bottom of the second heat exchange chamber 21, preferably, the second steam inlet is located at the bottom of the sidewall of the second heat exchange chamber 21, and the secondary recovery pipeline 201 is connected between the first steam discharge port and the second steam inlet.
Optionally, a first switch valve 2011 adapted to control on/off of the secondary recovery pipeline 201 is disposed on the secondary recovery pipeline 201, and the first switch valve 2011 may be an electromagnetic valve or a manual valve. With such an arrangement, when a large amount of steam exists in the first heat exchange chamber 11, the first switch valve 2011 can be controlled to be opened, the steam in the first heat exchange chamber 11 is introduced into the second heat exchange chamber 21 through the first steam discharge port, the secondary recovery pipeline 201 and the second steam inlet, and the steam introduced into the second heat exchange chamber 21 can be used alone or together with high-temperature condensed water recovered in the second heat exchange chamber 21 to heat a cold source in the second heat exchange chamber 21, so that resource waste is reduced.
Optionally, a one-way flow structure 132 adapted to conduct the secondary recovery pipeline 201 in a one-way manner is disposed on the secondary recovery pipeline 201. The one-way flow structure 132 is configured to enable the steam to flow in one direction from the first heat exchange chamber 11 to the second heat exchange chamber 21, so as to prevent the steam in the second heat exchange chamber 21 from flowing back into the first heat exchange chamber 11.
Further, a first steam inlet is further arranged on the first heat exchange chamber 11, the first steam inlet is connected with a residual steam discharge port of the steam curing equipment 3 through a primary recovery pipeline 301, the secondary recovery pipeline 201 is communicated with the primary recovery pipeline 301 through a first communication pipeline 202, and a second switch valve 2021 is arranged on the first communication pipeline 202. The second switch valve 2021 is adapted to control the on/off of the first communication line 202. Alternatively, the second on-off valve 2021 is a solenoid valve or a manual valve.
By adopting the design, when the circulating water heat source in the second heat exchange chamber 21 needs to be rapidly heated or the heat quantity of the recycled high-temperature condensed water is insufficient, the second switch valve 2021 can be controlled to be opened, the high-temperature steam discharged by the steam curing equipment 3 is directly introduced into the second heat exchange chamber 21 through the first communication pipeline 202, and the circulating water heat source is heated together with the high-temperature condensed water in the second heat exchange chamber 21, so that the heating efficiency is improved, and different use requirements are met.
Optionally, as shown in fig. 1, the steam-curing equipment 3 includes an autoclave, a flash evaporation device 33 is connected to the autoclave, and an exhaust port of the flash evaporation device 33 is communicated with the primary recovery pipeline 301 through a second communication pipeline 331. By the design, high-temperature residual steam of the still kettle and the flash evaporation device 33 can be respectively recycled to the steam heat exchange unit 1 through the primary recycling pipeline 301 and the second communication pipeline 331.
Preferably, a third on/off valve adapted to control the on/off of the flow channel and a one-way flow structure 132 adapted to conduct the second communication pipeline 331 and the primary recovery pipeline 301 in a one-way manner are respectively disposed on the second communication pipeline 331 and the primary recovery pipeline 301. The one-way circulation structure 132 is configured to allow the steam to flow in one direction from the autoclave or the flash evaporation device 33 to the steam heat exchange unit 1, so as to prevent the steam in the steam heat exchange unit 1 from flowing back to the autoclave or the flash evaporation device 33 in the reverse direction.
Optionally, in this embodiment, the flash evaporation device 33 is a flash evaporation tank with an inlet connected to a drain of the autoclave.
Optionally, in this embodiment, the autoclave apparatus includes a first autoclave 31 and a second autoclave 32, the first autoclave 31 is used as a primary autoclave, and after the first autoclave 31 finishes steaming, gas is purged into the second autoclave 32, and gas is also purged into the other heat-using apparatus 4 through the gas conduit 303, so as to provide a steam heat source for the heat-using apparatus 4.
Further, the second heat exchange chamber 21 is communicated with a condensed water discharge port of the flash evaporation device 33 through a condensed water discharge pipeline 302, a first filtering unit 35 is disposed on the condensed water discharge pipeline 302, and the first filtering unit 35 is used for filtering impurities in the high-temperature condensed water discharged into the second heat exchange chamber 21.
Specifically, the condensed water discharge line 302 is connected between a condensed water inlet of the second heat exchange chamber 21 and a drain of the flash tank, and the first filtering unit 35 is a filtering valve disposed on the condensed water discharge line 302. Through the first filtering unit 35, impurities in the high-temperature condensed water discharged into the second heat exchange chamber 21 can be filtered, and the circulating water heat source is prevented from being polluted during heat exchange.
Optionally, a sedimentation tank 34 is further arranged between the first filtering unit 35 and the flash evaporation device 33, large-particle impurities in the high-temperature condensed water discharged from the flash evaporation device 33 are precipitated by the sedimentation tank 34 and then flow into the first filtering unit 35 for secondary filtering, so that the filtering effect is better, and the blockage of the first filtering unit 35 can be avoided.
Optionally, a second steam discharge port is further disposed on the second heat exchange chamber 21, the second steam discharge port is connected to the hot water storage tank 7 through the first exhaust pipeline 203, and residual steam in the second heat exchange chamber 21 can be introduced into the hot water storage tank 7 to heat a water source in the hot water storage tank 7, so that multi-stage utilization of steam residual heat is achieved.
Preferably, said second steam discharge opening is opened at the top of said second heat exchange chamber 21.
Optionally, still be equipped with the third steam discharge port on the hot water storage tank 7, the third steam discharge port links to each other through the second exhaust pipe with cooling tower 9, cooling tower 9 links to each other with recovery pond 10, so set up for unnecessary steam can condense into water and discharge to recovery pond 10 through cooling tower 9 in the hot water storage tank 7, thereby has realized the zero release of steam, 100% recycle, greatly improved energy utilization.
Preferably, the third steam discharge port opens at the top of the hot water storage tank 7.
Optionally, a one-way flow structure 132 is disposed on the second exhaust pipeline to prevent the steam in the recovery tank 10 from flowing back to the hot water storage tank 7.
Optionally, the hot water storage tank 7 is connected to the main mixer 8 through a pipeline and supplies water to the main mixer 8 through the pumping unit 4021, but the hot water storage tank 7 may also supply water to other facilities or processes in the production plant which need water.
Alternatively, the second exhaust line may branch off a line directly connected to the recycling tank 10, so that condensed water condensed in the second exhaust line may also be directly discharged into the recycling tank 10.
Optionally, the bottom of the second heat exchange chamber 21 is further provided with a water outlet connected to the recovery pond 10, the water outlet is communicated with the recovery pond 10 through a first water discharge pipeline 204, the first water discharge pipeline 204 is provided with a pumping unit 4021, the first water discharge pipeline 204 is provided with a fourth switch valve suitable for controlling on/off, and by such arrangement, when the water amount in the second heat exchange chamber 21 is greater than a set value, the fourth switch valve can be opened to discharge redundant water in the second heat exchange chamber 21 to the recovery pond 10 for use by water supply equipment.
Alternatively, the water collected in the recovery tank 10 may be introduced into the ball mill and cutter tank through a pumping unit after cooling and precipitating.
Optionally, as shown in fig. 3, a liquid level detection unit 110 is disposed in the second heat exchange chamber 21, the liquid level detection unit 110 is adapted to detect liquid level information in the second heat exchange chamber 21 and feed back the liquid level information to a control unit of the waste heat recovery system, and the control unit may control the fourth switch valve to be opened or closed according to the liquid level information fed back by the liquid level detection unit 110.
Optionally, in this embodiment, the steam heat exchange unit 1 further includes a steam injector 12, the steam injector 12 is disposed in the first heat exchange chamber 11, the steam injector 12 has a plurality of injection holes 1221, and the plurality of injection holes 1221 are suitable for uniformly injecting the steam introduced by the steam curing device 3 into the first heat exchange chamber 11, so as to be in full mixing contact with a cold source in the first heat exchange chamber 11, thereby improving the heat exchange efficiency.
Alternatively, as shown in fig. 4, in the present embodiment, the steam injector 12 includes a main injection line 121 and a plurality of branch injection lines 122, and an air inlet end of the main injection line 121 communicates with a residual steam discharge port of the steam curing device 3; a plurality of branch injection pipes 122 are arranged at intervals on both sides of the main injection pipe 121, and a plurality of injection holes 1221 are arranged at intervals on the branch injection pipes 122.
Optionally, in this embodiment, the main injection pipeline 121 is a tubular structure with one open end and the other closed end, and the open end of the main injection pipeline 121 is connected to the first steam inlet. The first heat exchange chamber 11 includes a first side wall and a second side wall which are oppositely disposed, and a third side wall and a fourth side wall which are connected to two sides of the first side wall and the second side wall, the first steam inlet is arranged on the first side wall, and the closed end of the main injection pipeline 121 extends towards the direction close to the second side wall.
Optionally, the branch injection pipes 122 located at both sides of the main injection pipe 121 extend and expand towards a direction close to the third side wall and the fourth side wall, respectively, so that the lateral area of the steam injector 12 can be maximized, and the branch injection pipes can extend and cover the whole first heat exchange chamber 11, so that the steam injected from the injection holes 1221 can be fully contacted and mixed with water at each position in the first heat exchange chamber 11, and the heat exchange efficiency is higher.
Alternatively, the steam injector 12 is disposed at the bottom of the first heat exchange chamber 11, and the injection hole 1221 is opened above the branch injection line 122. This embodiment sets up steam ejector 12 in the bottom of heat transfer chamber, and jet orifice 1221 offers up for steam jet air 1222 is from lower to upper flowing, can get the cold source in the first heat transfer chamber 11 and contact completely and fully, thereby has improved the heat exchange efficiency between steam and the cold source, improves the utilization ratio of steam, and the air current sprays up can not directly blow the diapire and the lateral wall of first heat transfer chamber 11, avoids producing erosion, increase of service life to first heat transfer chamber 11 effectively.
Optionally, a connection joint is arranged at one end of the primary recovery pipeline 301 connected with the first steam inlet, the connection joint is suitable for connecting and fixing the primary recovery pipeline 301 on the first steam inlet, and preferably, a sealing structure is arranged between the connection joint and the first steam inlet to ensure the sealing performance of the connection position.
Optionally, as shown in fig. 1 and fig. 3, a steam ejector 12 is also disposed in the second heat exchange chamber 21, and an inlet end of the steam ejector 12 is connected to an inlet of the second steam, so that steam introduced into the second heat exchange chamber 21 through the secondary recovery pipeline 201 can be uniformly injected into the second heat exchange chamber 21, and fully contacts with a circulating water heat source in the second heat exchange chamber 21 for heat exchange, thereby improving heat exchange efficiency.
Optionally, the steam ejector 12 is also provided in the hot water storage tank 7.
Optionally, an air pressure balancing unit 13 is further disposed on the first heat exchange chamber 11 and/or the second heat exchange chamber 21, the air pressure balancing unit 13 includes an air pressure balancing pipe 131 and a one-way circulation structure 132, and the air pressure balancing pipe 131 is disposed at a top position of the first heat exchange chamber 11 and/or the second heat exchange chamber 21; the one-way circulation structure 132 is disposed on the air pressure balance pipe 131, and the one-way circulation structure 132 is configured to allow air to flow in one direction from the outside of the heat exchange chamber to the inside of the heat exchange chamber, so as to prevent steam in the heat exchange chamber from escaping.
The air pressure balance unit 13 can effectively ensure that the air pressure inside and outside the heat exchange chamber is balanced, and the phenomenon that a cold source in the first heat exchange chamber 11 or a circulating water heat source in the second heat exchange chamber 21 cannot be discharged due to negative pressure in the heat exchange chamber is avoided. And through the one-way circulation structure 132 that sets up on atmospheric pressure balance tube 131, one-way circulation structure 132 configures to and makes the air by the outside one-way circulation of the outside to inside direction of heat transfer room to prevent the steam in the heat transfer room to escape, avoided the waste problem of heat energy that the steam in the heat transfer room easily escapes through atmospheric pressure balance tube 131 to cause effectively, also improved staff's security simultaneously, avoided high temperature steam to escape the staff that burns.
Alternatively, in this embodiment, the air pressure balancing unit 13 is disposed on the top of the first heat exchange chamber 11 and the second heat exchange chamber 21. Specifically, the air pressure balancing unit 13 is disposed at a top position of sidewalls of the first and second heat exchange chambers 11 and 21.
It should be noted that the specific structure of the one-way flow structure 132 described in this embodiment may be a plunger structure with two unequal end areas, or a structure that performs one-way blocking by using a spring, or a standard one-way valve product may be selected. Preferably, in this embodiment, the one-way flow structure 132 is a check valve.
In this embodiment, the heat utilization equipment 4 supplies heat through the steam heat source and the circulating water heat source simultaneously, can reach the preset temperature fast, and is efficient, and can make full use of the waste heat of the high-temperature condensed water.
Optionally, the second heat exchange chamber 21 is provided with a circulating water inlet 221 and a circulating water outlet 222, which are suitable for introducing and leading out a circulating water heat source of the heat utilization equipment 4, and the circulating water heat source of the heat utilization equipment 4 is introduced into the second heat exchange chamber 21 from the circulating water inlet 221, mixed and heat-exchanged with the high-temperature condensed water in the second heat exchange chamber 21, and then flows back to the heat utilization equipment 4 from the circulating water outlet 222.
Optionally, the water source outlet end of the heat utilization equipment 4 is connected with the circulating water inlet 221 through a first pipeline 401, and the water source inlet end of the heat utilization equipment 4 is connected with the circulating water outlet 222 through a second pipeline 402. A second filtering unit 4011 is disposed on the first pipeline 401, and optionally, the second filtering unit 4011 is a filtering valve disposed on the first pipeline 401, so that impurities in the circulating water flowing into the second heat exchange chamber 21 can be effectively filtered. A pumping unit 4021 is arranged on the second pipeline 402, and optionally, the pumping unit 4021 is a water pump, so that the heated circulating water in the second heat exchange chamber 21 is conveniently pumped to the heat utilization equipment 4.
Optionally, the heat utilization device 4 comprises a resting chamber 41 and a drying chamber 42, and the first pipeline 401 comprises a first branch pipeline and a second branch pipeline which are respectively communicated with the resting chamber 41 and the drying chamber 42; the second pipeline 402 comprises a third branch pipeline and a fourth branch pipeline which are respectively communicated with the static culture chamber 41 and the drying chamber 42, and the pumping unit 4021 and the control valve 4022 are respectively arranged on the third branch pipeline and the fourth branch pipeline, so that the circulating water heat source can be independently controlled to be provided for the static culture chamber 41 or the drying chamber 42.
Optionally, in this embodiment, the first heat exchange chamber 11 is further provided with a cold source inlet and a cold source outlet, the cold source inlet is suitable for being connected to the tap water pipe 101, the cold source outlet is suitable for being communicated with a water inlet end of the boiler 6, the boiler 6 is used for supplying heat to the heat consuming device 4, and the boiler 6 mainly provides a water and heat source for the heat consuming device 4.
In this embodiment, the heat source of the circulating water of the heat utilization equipment 4 is mostly from the boiler 6, and the small part of the circulating water is from the high-temperature condensed water discharged from the steam-curing equipment 3.
Preferably, the cold source outlet is connected with the inlet of the soft water tank 5 through the second water drainage pipeline 102, and the outlet of the soft water tank 5 is communicated with the water inlet end of the boiler 6 through a pipeline, so that the water flowing into the boiler 6 can be softened, the water quality is improved, and the subsequent use is facilitated. Optionally, in this embodiment, a liquid level detection unit 110 adapted to monitor a water source in the first heat exchange chamber 11 is disposed in the first heat exchange chamber 11, and a liquid level detection unit 110 is also disposed in the hot water storage tank 7. The first heat exchange chamber 11, the second heat exchange chamber 21 and the hot water storage tank 7 are respectively provided with a temperature detection unit 120 and a pressure detection unit 130, so that temperature and pressure information in the first heat exchange chamber 11, the second heat exchange chamber 21 and the hot water storage tank 7 can be acquired in real time, control is facilitated, and meanwhile safety is higher.
Optionally, in this embodiment, the liquid level detection unit 110 is a liquid level meter or a liquid level sensor, the temperature detection unit 120 is a thermometer or a temperature sensor, and the pressure detection unit 130 is a pressure transmitter.
Example two
The embodiment provides an aerated concrete production line, which comprises the waste heat recovery system of the steam curing equipment in the first embodiment.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a steam curing equipment waste heat recovery system which characterized in that includes:
a steam-curing device (3) adapted to provide a source of steam heat to the heat-consuming device (4);
the steam heat exchange unit (1) comprises a first heat exchange chamber (11) communicated with a residual steam discharge port of the steam curing equipment (3), and a first steam discharge port is further formed in the top of the first heat exchange chamber (11);
the condensed water heat exchange unit (2) comprises a second heat exchange chamber (21) communicated with a high-temperature condensed water discharge port of the steam curing equipment (3), and the second heat exchange chamber (21) is communicated with the first steam discharge port through a secondary recovery pipeline (201).
2. The waste heat recovery system of the steam-curing equipment as claimed in claim 1, characterized in that the first heat exchange chamber (11) is further provided with a first steam inlet, and the first steam inlet is connected with a waste steam discharge port of the steam-curing equipment (3) through a primary recovery pipeline (301);
the secondary recovery pipeline (201) is communicated with the primary recovery pipeline (301) through a first communication pipeline (202), and a switch valve is arranged on the first communication pipeline (202).
3. The waste heat recovery system of the steam-curing equipment as claimed in claim 2, wherein the steam-curing equipment (3) comprises an autoclave, a flash evaporation device (33) is connected to the autoclave, and an exhaust port of the flash evaporation device (33) is communicated with the primary recovery pipeline (301) through a second communication pipeline (331).
4. The waste heat recovery system of the steam curing equipment according to any one of the claims 1 to 3, characterized in that a second steam discharge port is arranged on the second heat exchange chamber (21), and the second steam discharge port is connected with a hot water storage tank (7);
and/or a third steam discharge port is further arranged on the hot water storage tank (7), the third steam discharge port is connected with a cooling tower (9), the cooling tower (9) is connected with a recovery pool (10), and a water discharge port connected with the recovery pool (10) is further arranged at the bottom of the second heat exchange chamber (21).
5. The waste heat recovery system of the steam maintenance equipment as claimed in any one of claims 1 to 3, characterized in that the second heat exchange chamber (21) is communicated with a condensed water discharge port of the steam maintenance equipment (3) through a condensed water discharge pipeline (302), a first filtering unit (35) is arranged on the condensed water discharge pipeline (302), and the first filtering unit (35) is used for filtering impurities in the high-temperature condensed water discharged into the second heat exchange chamber (21);
and/or, still be equipped with cold source entry and cold source export on first heat transfer room (11), the cold source entry is suitable for to be connected with water pipe (101) certainly, the cold source export is suitable for and feeds through with boiler (6) intake end, boiler (6) are used for to heat supply with equipment (4).
6. The waste heat recovery system of the steam curing equipment according to any one of the claims 1 to 3, wherein the steam heat exchange unit (1) further comprises:
the steam ejector (12) is arranged in the first heat exchange chamber (11), the steam ejector (12) is provided with a plurality of injection holes (1221), and the plurality of injection holes (1221) are suitable for uniformly injecting the steam introduced into the steam curing equipment (3) into the first heat exchange chamber (11).
7. The steam plant waste heat recovery system according to claim 6, characterized in that the steam ejector (12) comprises:
a main injection pipeline (121), wherein the air inlet end of the main injection pipeline (121) is communicated with the residual steam discharge port of the steam-curing device (3);
the branch injection pipelines (122) are arranged on two sides of the main injection pipeline (121) at intervals, and a plurality of injection holes (1221) are arranged on the branch injection pipelines (122) at intervals.
8. The steam-curing equipment waste heat recovery system according to any one of claims 1 to 3, characterized in that the condensed water heat exchange unit (2) is adapted to exchange heat with a circulating water heat source of the heat-using equipment (4), and the second heat exchange chamber (21) is provided with a circulating water inlet (221) and a circulating water outlet (222) adapted to introduce the circulating water heat source into the outlet.
9. The steam-curing equipment waste heat recovery system according to claim 8, characterized in that the heat utilization equipment (4) is connected with the circulating water inlet (221) through a first pipeline (401), the circulating water outlet (222) is connected with the heat utilization equipment (4) through a second pipeline (402), the first pipeline (401) is provided with a second filtering unit (4011), and the second pipeline (402) is provided with a pumping unit (4021).
10. An aerated concrete production line, characterized by comprising the waste heat recovery system of the steam curing equipment of any one of the claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424648.6A CN114705075A (en) | 2022-04-21 | 2022-04-21 | Evaporate foster equipment waste heat recovery system and aerated concrete production line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210424648.6A CN114705075A (en) | 2022-04-21 | 2022-04-21 | Evaporate foster equipment waste heat recovery system and aerated concrete production line |
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| CN114705075A true CN114705075A (en) | 2022-07-05 |
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| CN202210424648.6A Pending CN114705075A (en) | 2022-04-21 | 2022-04-21 | Evaporate foster equipment waste heat recovery system and aerated concrete production line |
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| ATA781772A (en) * | 1972-09-12 | 1975-02-15 | Bucuresti Intreprinderea | PLANT FOR THE PRODUCTION OF PRECAST CONCRETE ELEMENTS |
| CN204438844U (en) * | 2014-12-30 | 2015-07-01 | 周刚 | Remaining vapour dual-purpose energy storage equipment |
| CN204431459U (en) * | 2014-12-30 | 2015-07-01 | 周刚 | Vapour energy storage circulation device more than still kettle accelerated accumulation formula |
| CN113547627A (en) * | 2021-07-29 | 2021-10-26 | 湖南三一快而居住宅工业有限公司 | Concrete prefabricated part production system and steam recovery method thereof |
| CN214582609U (en) * | 2021-02-03 | 2021-11-02 | 山东汉华工业设备有限公司 | Heat exchange unit for recycling and reusing exhaust gas of still kettle |
| CN114251968A (en) * | 2021-12-23 | 2022-03-29 | 徐州市帝龙新型墙体材料有限公司 | Evaporate and press production of aerated concrete with evaporating cauldron waste heat environmental protection recovery equipment |
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2022
- 2022-04-21 CN CN202210424648.6A patent/CN114705075A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATA781772A (en) * | 1972-09-12 | 1975-02-15 | Bucuresti Intreprinderea | PLANT FOR THE PRODUCTION OF PRECAST CONCRETE ELEMENTS |
| CN204438844U (en) * | 2014-12-30 | 2015-07-01 | 周刚 | Remaining vapour dual-purpose energy storage equipment |
| CN204431459U (en) * | 2014-12-30 | 2015-07-01 | 周刚 | Vapour energy storage circulation device more than still kettle accelerated accumulation formula |
| CN214582609U (en) * | 2021-02-03 | 2021-11-02 | 山东汉华工业设备有限公司 | Heat exchange unit for recycling and reusing exhaust gas of still kettle |
| CN113547627A (en) * | 2021-07-29 | 2021-10-26 | 湖南三一快而居住宅工业有限公司 | Concrete prefabricated part production system and steam recovery method thereof |
| CN114251968A (en) * | 2021-12-23 | 2022-03-29 | 徐州市帝龙新型墙体材料有限公司 | Evaporate and press production of aerated concrete with evaporating cauldron waste heat environmental protection recovery equipment |
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