CN109883147B - Construction waste dehydration reaction kettle - Google Patents
Construction waste dehydration reaction kettle Download PDFInfo
- Publication number
- CN109883147B CN109883147B CN201910248013.3A CN201910248013A CN109883147B CN 109883147 B CN109883147 B CN 109883147B CN 201910248013 A CN201910248013 A CN 201910248013A CN 109883147 B CN109883147 B CN 109883147B
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- reaction kettle
- main body
- upper main
- construction waste
- lower main
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- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 31
- 239000002699 waste material Substances 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 230000018044 dehydration Effects 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000011282 treatment Methods 0.000 description 5
- 239000010963 304 stainless steel Substances 0.000 description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention discloses a dehydration reaction kettle for construction waste, which can comprise an upper reaction kettle main body and a lower reaction kettle main body which are connected in a sealing way; the reaction kettle is characterized in that a cold row with an inverted V-shaped structure is arranged in the upper main body of the reaction kettle, the top of the cold row is connected with a heat energy exchange workstation through a pipeline, and two ends of the heat energy exchange workstation are respectively communicated with the cold row through a refrigerant pipeline; the inner wall of the upper main body of the reaction kettle is connected with an upward inclined condensed water baffle, a drainage pipeline is arranged at the joint of the condensed water baffle and the upper main body of the reaction kettle, a normally closed electromagnetic valve is arranged on the drainage pipeline, and the tail end of the drainage pipeline is connected with a vacuum water storage tank; an air inlet valve, a vacuum meter and an air outlet valve are arranged at the top of the upper main body of the reaction kettle; a heating device and a temperature sensor are arranged in the lower main body of the reaction kettle; a semipermeable membrane is arranged between the upper main body of the reaction kettle and the lower main body of the reaction kettle. The dehydration reaction kettle for the construction waste provided by the invention has the advantages of high dehydration efficiency and low energy consumption.
Description
Technical Field
The invention relates to the technical field of dehydration of construction waste, in particular to a dehydration reaction kettle for construction waste.
Background
The construction waste resource utilization treatment process is used for meeting the subsequent process requirements by carrying out different process treatments according to the production process requirements of the subsequent products. When building waste is used for producing subsequent products such as dry-mixed mortar, active admixture, recycled lightweight aggregate and the like, the building waste is required to be dehydrated, and the products are processed to be in a dry constant weight state or the water content is lower than 1 percent and the like.
At present, the whole construction waste recycling industry is in an emerging development stage, a perfect dehydration technology system is not formed, and the existing dehydration technology is mostly realized by using a dehydration method in an ore processing technology and a chemical raw material processing technology, heating the construction waste to 90-110 ℃ by using hot air, microwaves and the like, and sometimes assisting with flowing air to accelerate water evaporation so as to realize a dehydration effect. The process method has huge energy consumption, high treatment cost and difficult entering of dehydrated products into subsequent utilization at reasonable cost, namely, the dehydrated products can obtain dry materials but are unacceptable in the market due to the excessive product cost, so that the progress of resource utilization of construction wastes is restricted. At present, no special technical equipment which can adapt to the recycling utilization condition of the building waste and can dehydrate with low energy consumption and high efficiency exists in the industrial application.
Disclosure of Invention
The invention aims to provide a dehydration reaction kettle for construction waste, which solves the problems in the prior art, and has the advantages of high dehydration efficiency and low energy consumption.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a dehydration reaction kettle for construction waste, which comprises an upper reaction kettle main body and a lower reaction kettle main body which are connected in a sealing manner; the reaction kettle is characterized in that a cold row with an inverted V-shaped structure is arranged in the upper main body of the reaction kettle, the top of the cold row is connected with a heat energy exchange workstation through a pipeline, and two ends of the heat energy exchange workstation are respectively communicated with the cold row through a refrigerant pipeline; the inner wall of the upper main body of the reaction kettle is connected with an upward inclined condensate water baffle, a drainage pipeline is arranged at the joint of the condensate water baffle and the upper main body of the reaction kettle, a normally closed electromagnetic valve is arranged on the drainage pipeline, and the tail end of the drainage pipeline is connected with a vacuum water storage tank; an air inlet valve, a vacuum meter and an air outlet valve are arranged at the top of the upper main body of the reaction kettle; a heating device and a temperature sensor are arranged in the lower main body of the reaction kettle; and a semipermeable membrane is arranged between the upper main body of the reaction kettle and the lower main body of the reaction kettle.
Optionally, a sealing ring is arranged at the joint of the upper main body of the reaction kettle and the lower main body of the reaction kettle.
Optionally, the temperature sensor and the heating device are connected with a temperature controller, and the temperature controller is connected with a central PLC control system.
Optionally, the semipermeable membrane is a hydrophobic breathable membrane.
Optionally, the heating device comprises a plurality of groups of resistance heating rods or microwave heating plates.
Optionally, the outer surfaces of the upper main body of the reaction kettle and the lower main body of the reaction kettle are respectively provided with an insulating layer.
Optionally, the heat-insulating layer is a polystyrene board or a coated heat-insulating paint.
Optionally, the materials of the upper main body and the lower main body of the reaction kettle are stainless steel with the thickness of 20mm or corrosion-resistant alloy with the thickness of 15 mm; the whole shape of the upper main body of the reaction kettle and the lower main body of the reaction kettle is a cylinder, a cuboid or a polyhedron.
Compared with the prior art, the invention has the following technical effects:
the dehydration reaction kettle for the construction waste utilizes the physical principle that the boiling point of water is reduced along with the pressure reduction, realizes boiling (violent gasification) of the water at a lower temperature by vacuumizing in the dehydration reaction kettle, ensures the dynamic balance of the temperature and the pressure during dehydration operation by adopting measures such as adjusting the temperature in real time by a central PLC, arranging a condensing part at the upper part of the reaction kettle and the like, and can effectively reduce the treatment cost and improve the dehydration productivity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a dehydration reaction kettle for construction waste;
the device comprises an air inlet valve 1, a vacuum gauge 2, an air outlet valve 3, a reaction kettle upper main body 4, a heat energy exchange workstation 5, a refrigerant pipeline 6, a cold row 7, a normally closed electromagnetic valve 8, a condensed water baffle 9, a heat preservation layer 10, a sealing ring 11, a temperature sensor 12, a drainage pipeline 13, a reaction kettle lower main body 14, a heating device 15, a temperature controller 16, a water storage tank 17 and a semipermeable membrane 18.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a dehydration reaction kettle for construction waste, which solves the problems in the prior art, and has the advantages of high dehydration efficiency and low energy consumption.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a dehydration reaction kettle for construction waste, which is shown in figure 1, and can be separated into an upper main body 4 of the reaction kettle and a lower main body 14 of the reaction kettle, wherein the lower main body 14 of the reaction kettle is mainly a dehydration reaction zone, and the upper main body 4 of the reaction kettle is a pressure balance zone. An air inlet valve 1, a vacuum meter 2 and an air outlet valve 3 are arranged at the top of the upper main body 4 of the reaction kettle, the air inlet valve 1 is used for pressure relief, the reaction kettle is conveniently opened for carrying out operations such as loading, unloading, overhauling and the like, and the reaction kettle is in a normally closed state when not in work; the vacuum meter 2 is an electronic vacuum meter with digital signal feedback, and can feed back current/voltage signals to the central PLC to adjust the working state of the vacuum workstation; the vacuum meter 2 can adopt an electronic vacuum meter with 4-20mA current feedback; the exhaust valve 3 is used for connecting a vacuum working station to execute vacuumizing operation, and is in a normally closed state when the vacuum working station is not in operation.
The upper main body 4 and the lower main body 14 of the reaction kettle are made of high-strength and corrosion-resistant materials, so that no obvious deformation during operation is ensured; the walls of the upper reactor body 4 and the lower reactor body 14 can be made of 20mm thick 304 stainless steel or 15mm thick corrosion resistant alloy; the overall shape can be designed into a cylinder, a cuboid, a polyhedron and the like according to the working conditions.
The reaction kettle is characterized in that a cold row 7 with an inverted V-shaped structure is arranged in the upper main body 4 of the reaction kettle, the top of the cold row 7 is connected with a heat energy exchange workstation 5 through a pipeline, two ends of the heat energy exchange workstation 5 are respectively communicated with the cold row 7 through a refrigerant pipeline 6, the joint of the bottom of the cold row 7 and the upper main body 4 of the reaction kettle is sealed, the refrigerant pipeline 6 is used for ensuring the circulation operation of a refrigerant in a closed environment, and an insulating layer is externally applied; the refrigerant pipeline 6 can use 304 stainless steel hollow pipe or copper hollow pipe. The cold row 7 is composed of a plurality of groups of multi-layer hollow pipes and is connected with a heat energy exchange workstation through a refrigerant pipeline 6 to form a closed operation environment of a refrigerant; the cold row 7 can use 304 stainless steel hollow pipes or copper hollow pipes; the cold row 7 can be provided with heat conducting fins outside the hollow tube to strengthen the heat conducting effect.
The inner wall of the upper main body 4 of the reaction kettle is connected with an upward-inclined condensate baffle 9, a drainage pipeline 13 is arranged at the joint of the condensate baffle 9 and the upper main body 4 of the reaction kettle, a normally closed electromagnetic valve 8 is arranged on the drainage pipeline 13, the tail end of the drainage pipeline 13 is connected with a vacuum water storage tank 17, and the condensate baffle 9 is used for guiding the flow direction of condensate water and avoiding repeated operation caused by the condensate water entering the lower main body 14 of the reaction kettle; the condensed water baffle 9 can be made of a kettle body homogeneous material, and can also be made of a corrosion-resistant material such as engineering plastics and the like. The special condensed water drainage pipeline 13 is connected with a pre-vacuumized water storage tank 17 through a normally closed electromagnetic valve 8, and the electromagnetic valve 8 is opened for drainage during operation; the electromagnetic valve 8 is closed before the air inlet valve 1 is opened each time; the drain pipe 13 uses a flexible high pressure resistant pipe, such as a steel spiral pipe lined with rubber, which is resistant to corrosion.
The outer surface of the reaction kettle is provided with an insulating layer 10 for maintaining the operation temperature of the reaction kettle and improving the energy-saving effect; the heat-insulating layer 10 can be attached by using conventional heat-insulating materials such as polystyrene board, etc., or can be coated by using heat-insulating paint; a sealing ring 11 is arranged in a gap between the connecting part of the upper main body 4 of the reaction kettle and the lower main body 14 of the reaction kettle so as to ensure the stability of the pressure in the reaction kettle; the seal ring 11 may use a high quality silica gel material, and the seal ring 11 may not be cut or secondarily joined.
A heating device 15 is arranged in the lower main body 14 of the reaction kettle, and the temperature controller 16 starts working after receiving a central PLC instruction and is used for adjusting the reaction temperature; the heating device 15 may be composed of several groups of resistive heating rods or microwave heating plates; the temperature sensor 12 is also arranged in the lower main body 14 of the reaction kettle, and can detect the temperature of a reaction zone in real time and transmit data to the central PLC; the temperature sensor 12 may use a thermocouple/thermal resistor with digital signal feedback; the reaction kettle is provided with a condensed water storage tank 17 which can keep the vacuum state; the water storage tank 17 can be made of 304 stainless steel or alloy materials; a semipermeable membrane 18 is arranged in the upper main body 4 of the reaction kettle, and the semipermeable membrane 18 is positioned between the upper main body 4 of the reaction kettle and the lower main body 14 of the reaction kettle, so that water vapor can pass through but solid substances cannot pass through; the semipermeable membrane 18 may be a commercially available general-purpose hydrophobic breathable membrane.
The construction waste dehydration reaction kettle provided by the invention utilizes the physical principle that the boiling point of water is reduced along with the pressure reduction, realizes boiling (violent gasification) of water at a lower temperature by vacuumizing in the dehydration reaction kettle, simultaneously adjusts the temperature in real time by a central PLC, and sets condensation components such as a cold drain 7 and the like on the upper main body 4 of the reaction kettle, so that the vapor which passes through a semipermeable membrane 18 after gasification is condensed and flows to a condensed water baffle along the cold drain wall, finally flows into a water storage tank 17 through a drainage pipeline 13, ensures the dynamic balance of the temperature and the pressure during dehydration operation, can effectively reduce the treatment cost and improves the dehydration productivity.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. The utility model provides a construction waste dehydration reation kettle which characterized in that: comprises an upper main body of the reaction kettle and a lower main body of the reaction kettle which are connected in a sealing way; the reaction kettle is characterized in that a cold row with an inverted V-shaped structure is arranged in the upper main body of the reaction kettle, the top of the cold row is connected with a heat energy exchange workstation through a pipeline, and two ends of the heat energy exchange workstation are respectively communicated with the cold row through a refrigerant pipeline; the inner wall of the upper main body of the reaction kettle is connected with an upward inclined condensate water baffle, a drainage pipeline is arranged at the joint of the condensate water baffle and the upper main body of the reaction kettle, a normally closed electromagnetic valve is arranged on the drainage pipeline, and the tail end of the drainage pipeline is connected with a vacuum water storage tank; an air inlet valve, a vacuum meter and an air outlet valve are arranged at the top of the upper main body of the reaction kettle; a heating device and a temperature sensor are arranged in the lower main body of the reaction kettle; a semipermeable membrane is arranged between the upper main body of the reaction kettle and the lower main body of the reaction kettle; a sealing ring is arranged at the joint of the upper main body of the reaction kettle and the lower main body of the reaction kettle; the temperature sensor and the heating device are connected with a temperature controller, and the temperature controller is connected with a central PLC control system; the semi-permeable membrane is a hydrophobic and breathable membrane; the heating device comprises a plurality of groups of resistance heating rods or microwave heating plates.
2. The construction waste dehydration reaction kettle according to claim 1, wherein: the outer surfaces of the upper main body and the lower main body of the reaction kettle are respectively provided with an insulating layer.
3. The construction waste dehydration reaction kettle according to claim 2, wherein: the heat preservation layer is a polystyrene board or a coated heat preservation paint.
4. The construction waste dehydration reaction kettle according to claim 1, wherein: the materials of the upper main body of the reaction kettle and the lower main body of the reaction kettle are stainless steel with the thickness of 20mm or corrosion-resistant alloy with the thickness of 15 mm; the whole shape of the upper main body of the reaction kettle and the lower main body of the reaction kettle is a cylinder, a cuboid or a polyhedron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248013.3A CN109883147B (en) | 2019-03-29 | 2019-03-29 | Construction waste dehydration reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248013.3A CN109883147B (en) | 2019-03-29 | 2019-03-29 | Construction waste dehydration reaction kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109883147A CN109883147A (en) | 2019-06-14 |
| CN109883147B true CN109883147B (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248013.3A Active CN109883147B (en) | 2019-03-29 | 2019-03-29 | Construction waste dehydration reaction kettle |
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| CN (1) | CN109883147B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101251131B1 (en) * | 2010-05-12 | 2013-04-04 | 코웨이 주식회사 | Method for control of finishing operation of a drying furnace assembly in food waste disposer |
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| CN106247780A (en) * | 2015-06-05 | 2016-12-21 | 研机株式会社 | Drying device |
| CN205175027U (en) * | 2015-11-23 | 2016-04-20 | 四川农业大学 | Can collect liquid hot air drying equipment |
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| Publication number | Publication date |
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| CN109883147A (en) | 2019-06-14 |
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