Concrete product curing device and concrete product preparation system
By using cement kiln exhaust gas as a heat source, the concrete product curing device solves the problem of underutilization of cement kiln exhaust gas, realizes efficient utilization of heat energy and resource recycling, reduces production energy consumption and carbon emissions, and lowers the production cost of concrete products.
Patent Information
- Application Number
- CN202520259767.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In existing technologies, the exhaust gas from cement kiln systems is not fully utilized, resulting in high carbon emissions and low thermal energy utilization, leading to high production costs for concrete products.
Design a concrete product curing device that uses the exhaust gas from a cement kiln as a heat source, which is introduced into the liquid storage area of the steam curing tank through a gas pipeline to generate steam to cure the concrete products, improve their strength, and use the waste heat to heat the liquid in the storage area, thereby achieving resource recycling and efficient use of thermal energy.
This achieves efficient utilization of thermal energy in cement kilns, reduces production energy consumption and carbon emissions, reduces steam usage, and lowers the production cost of concrete products.
Smart Images
Figure CN223701232U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of maintaining concrete, especially to a concrete product maintenance device and a concrete product preparation system. BACKGROUND
[0002] After prestressed concrete pipe piles are formed by centrifugation, they need to be accelerated in cement hydration and solidification under steam curing conditions, and the strength development of concrete is rapidly stimulated in a short time. The steam curing process plays a crucial role in the development of concrete performance and production cycle. However, the use of the steam curing process has a greater impact on the cost and energy consumption of concrete production, so it is necessary to optimize the concrete curing process. The steam curing temperature of pipe pile concrete is generally 60-80℃, while a large amount of tail gas is discharged during the production process of the cement kiln system, and the kiln tail gas temperature is still relatively high (80-120℃), and contains a certain concentration of carbon dioxide (about 15%). The kiln tail gas temperature and carbon dioxide content are related to the cement kiln production system, and there are slight differences between different systems. Therefore, it is necessary to design a concrete product curing device to realize the recycling and utilization of kiln tail gas, fully utilize the waste heat value of kiln tail gas, and reduce the production cost of pipe pile concrete products. SUMMARY
[0003] The utility model aims at providing a kind of concrete product curing device and concrete product preparation system, to solve the technical problems such as large carbon emissions and low heat energy utilization rate caused by the fact that cement kiln system tail gas is not fully utilized, and high production cost of concrete products.
[0004] In a first aspect, the utility model provides a kind of concrete product curing device, comprising: steam curing pool, sample rack and gas pipeline;
[0005] Along the depth direction of the steam curing pool, the sample curing area and the liquid storage area are sequentially arranged in the steam curing pool;
[0006] The sample rack is arranged in the sample curing area, and is used for placing concrete products;
[0007] The gas pipeline has gas inlet end and gas outlet end, the gas inlet end is used for being communicated with the tail gas outlet of cement kiln, and the liquid storage area is provided with at least one gas outlet end.
[0008] In an optional embodiment, the sample curing area is provided with at least one gas outlet end.
[0009] In an optional embodiment, the gas outlet end arranged in the sample curing area is located below the sample rack.
[0010] In an optional embodiment, the steam curing pool is provided with the gas outlet end on both sides.
[0011] In an optional embodiment, the gas outlet end is provided with a plurality of gas outlets.
[0012] In an optional embodiment, the steam curing tank is provided with a tank cover.
[0013] The tank cover is provided with a temperature sensor and / or a humidity sensor.
[0014] In an optional embodiment, the sample holder comprises a holder body and a plurality of plate bodies arranged on the holder body, and the spacing between adjacent plate bodies is adjustable.
[0015] In an optional embodiment, the gas pipeline is provided with a high-temperature fan and an air inlet valve, and the high-temperature fan is located upstream of the air inlet valve.
[0016] In an optional embodiment, the side wall of the steam curing tank is provided with an exhaust port, and the exhaust port is located above the sample holder.
[0017] And / or
[0018] The bottom wall of the steam curing tank is provided with a liquid discharge port.
[0019] In a second aspect, the utility model provides a concrete product preparation system, including cement kiln and concrete product curing device of any preceding embodiment.
[0020] Compared with the prior art, the concrete product curing device and the concrete product preparation system provided by the utility model have the following technical advantages:
[0021] The concrete product curing device comprises a steam curing tank, a sample holder and a gas pipeline, the sample curing area and the liquid storage area are sequentially arranged in the steam curing tank along the depth direction of the steam curing tank, the sample holder is arranged in the sample curing area and is used for placing the concrete product, and the gas pipeline has an air inlet end and an air outlet end.
[0022] The tail gas of the cement kiln is used as a heat source and is introduced into the liquid storage area of the steam curing tank through the gas pipeline, the tail gas of the cement kiln heats the liquid in the liquid storage area to generate steam, and the concrete product on the sample holder in the sample curing area of the steam curing tank is cured, thereby improving the strength of the concrete product.
[0023] The concrete product preparation system provided by the utility model has the technical advantages and effects of the concrete product curing device, and the technical advantages and effects of the concrete product curing device are not described in detail here.
[0024] Other features and advantages of the utility model will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings required to be used in the specific embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.
[0026] Fig. 1 The concrete product curing device structure schematic view provided by the utility model embodiment is shown in the figure.
[0027] Fig. 2 The liquid storage area structure schematic view provided by the utility model embodiment is shown in the figure.
[0028] Fig. 3 The frame structure schematic view provided by the utility model embodiment is shown in the figure.
[0029] Icon: 1-cement kiln;2-gas pipeline;3-high temperature fan;4-inlet valve;5-steam curing pool;6-temperature sensor;7-humidity sensor;8-exhaust port;9-liquid outlet;10-liquid storage area;11-sample rack;12-sample curing area;13-gas outlet;14-gas outlet;15-pool cover;16-frame;17-plate;18-inlet end. DETAILED DESCRIPTION
[0030] The technical scheme of the utility model will be described clearly and completely in combination with the embodiments, and obviously, the described embodiments are some embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0031] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the term "first", "second", "third" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0032] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0033] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that the ordinary skilled in the art can realize, when the combination of technical solutions appears mutual contradiction or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.
[0034] The utility model will be described further in detail below through specific embodiment and in conjunction with the drawings.
[0035] Specific structure as Figs. 1 to 3 Indicated.
[0036] The embodiment provides a kind of concrete product maintenance device, comprising: steam curing pool 5, sample rack 11 and gas pipeline 2;Along the depth direction of steam curing pool 5, sample curing area 12 and liquid storage area 10 are sequentially arranged in steam curing pool 5;Sample rack 11 is set to sample curing area 12, and is used to place concrete product;Gas pipeline 2 has gas inlet end 18 and gas outlet end 13, gas inlet end 18 is used to communicate with the tail gas outlet of cement kiln 1, and liquid storage area 10 is provided with at least one gas outlet end 13.
[0037] In this embodiment, the tail gas of the cement kiln 1 is used as a heat source and is introduced into the liquid storage area 10 of the steam curing pool 5 through the gas pipeline 2. The tail gas of the cement kiln 1 heats the liquid in the liquid storage area 10 through waste heat to generate steam, and cures the concrete products on the sample shelf 11 in the sample curing area 12 of the steam curing pool 5, thereby improving the strength of the concrete products. Not only can the use of steam be avoided, but the temperature and humidity in the steam curing pool 5 can also be ensured. In addition, the heat energy utilization rate of the cement kiln 1 can be improved, resource recycling can be achieved, production energy consumption can be reduced, and carbon emissions can be reduced.
[0038] In an optional technical solution of this embodiment, the sample curing area 12 is provided with at least one gas outlet 13. The tail gas of the cement kiln 1 is used as a heat source and is introduced into the sample curing area 12 of the steam curing pool 5 through the gas pipeline 2. The tail gas of the cement kiln 1 heats the air in the sample curing area 12 through waste heat, and cures the concrete products on the sample shelf 11 in the sample curing area 12 of the steam curing pool 5, thereby further improving the curing effect of the concrete products, the heat energy utilization rate of the cement kiln 1, and further reducing production energy consumption and carbon emissions. In addition, the tail gas of the cement kiln 1 heats both the air in the sample curing area 12 and the liquid in the liquid storage area 10, and the gas-liquid synergistic effect improves the temperature heating rate in the steam curing pool 5.
[0039] In an optional technical solution of this embodiment, the gas outlet 13 provided in the sample curing area 12 is located below the sample shelf 11. The introduced tail gas of the cement kiln 1 rises from below to above the sample shelf 11, which can better contact the concrete products on the sample shelf 11, enhance gas circulation, and improve the curing effect.
[0040] In an optional technical solution of this embodiment, the steam curing pool 5 is provided with gas outlets 13 on both sides. The tail gas of the cement kiln 1 is introduced at multiple positions, which can enhance the uniformity of the curing of the concrete products and improve the heating efficiency.
[0041] In an optional technical solution of this embodiment, the gas outlet 13 is provided with a plurality of gas outlets 14. This can further improve the heating efficiency in the steam curing pool 5 and further enhance the uniformity of the curing of the concrete products.
[0042] In the embodiment, the liquid storage area 10 can be provided with one gas outlet 13 or multiple gas outlets 13, and the gas outlet 13 at the liquid storage area 10 can be located at any position of the liquid storage area 10, or one gas outlet 14 or multiple gas outlets 14 can be provided; the sample curing area 12 can be provided with one gas outlet 13 or multiple gas outlets 13, and the gas outlet 13 at the sample curing area 12 can be located at any position of the sample curing area 12, or one gas outlet 14 or multiple gas outlets 14 can be provided; preferably, one gas outlet 13 is provided on each of the opposite sides of the sample curing area 12, and the gas outlet 13 on each side of the sample curing area 12 is located at the side edge position, one gas outlet 13 is provided on each of the opposite sides of the liquid storage area 10, and the gas outlet 13 on each side of the liquid storage area 10 has three gas outlets 14, and the gas outlets 14 are located at the middle position of the liquid storage area 10. The multiple gas outlets 14 and multiple positions are simultaneously connected to the tail gas of the cement kiln 1, which can enhance the gas circulation in the steam curing pool 5 and enhance the curing performance of the concrete products.
[0043] In the optional technical solution of the embodiment, the steam curing pool 5 is provided with a pool cover 15; the pool cover 15 is provided with a temperature sensor 6, which is used to monitor the temperature of the steam curing pool 5, and the rate and time of the tail gas of the cement kiln 1 are adjusted according to the detected temperature data; and / or the pool cover 15 is provided with a humidity sensor 7, which is used to monitor the humidity of the steam curing pool 5, and the rate and time of the tail gas of the cement kiln 1 are adjusted according to the detected humidity data. Preferably, the pool cover 15 is provided with the temperature sensor 6 and the humidity sensor 7, which can better adjust the rate and time of the tail gas of the cement kiln 1 and ensure the curing effect.
[0044] In the optional technical solution of the embodiment, the sample holder 11 includes a holder body 16 and multiple layer plates 17 arranged on the holder body 16, and the spacing between adjacent plates 17 is adjustable.
[0045] In the embodiment, the arrangement of the multiple layer plates 17 can layer the concrete products, increase the placement amount of the concrete products, increase the curing area, and increase the contact area between the tail gas of the cement kiln 1 and the concrete products, thereby enhancing the uniformity of the curing of the concrete products. The concrete products can be pipe pile concrete or other concrete products.
[0046] The holder body 16 is formed by steel structure welding, which is stable in structure. The holder body 16 is provided with multiple supporting blocks or clamping grooves, and the plates 17 are arranged at the supporting blocks or clamping grooves, which not only ensures the stability of the plates 17, but also adjusts the spacing between adjacent plates 17 by adjusting the plates 17 to other supporting blocks or clamping grooves, which is simple in structure and convenient to adjust.
[0047] In the optional technical scheme of the embodiment, the gas pipeline 2 is provided with a high-temperature fan 3 and an air inlet valve 4, and the high-temperature fan 3 is located upstream of the air inlet valve 4. By arranging the high-temperature fan 3, the efficiency of the cement kiln 1 in introducing the tail gas into the steam curing tank 5 can be improved, and by arranging the air inlet valve 4, the tail gas of the high-temperature cement kiln 1 can be selectively introduced according to the real-time temperature and humidity in the steam curing tank 5.
[0048] In the optional technical scheme of the embodiment, the steam curing tank 5 is provided with an exhaust port 8, through which the gas in the steam curing tank 5 can be discharged. The exhaust port 8 can be located on the tank cover 15 or on the side wall of the steam curing tank 5, as long as the requirement is met.
[0049] In the optional technical scheme of the embodiment, the steam curing tank 5 is provided with a liquid discharge port 9, through which the liquid in the steam curing tank 5 can be discharged. The liquid discharge port 9 can be located on the side wall of the steam curing tank 5 or on the bottom wall of the steam curing tank 5, as long as the requirement is met.
[0050] Preferably, the side wall of the sample curing area 12 of the steam curing tank 5 is provided with an exhaust port 8 located above the sample rack 11, and the bottom wall of the liquid storage area 10 of the steam curing tank 5 is provided with a liquid discharge port 9. The exhaust and liquid discharge effects are better.
[0051] In the embodiment, the average temperature of the tail gas of the cement kiln 1 is 120℃, the water vapor content is about 6%, and the carbon dioxide concentration is 15%. The operation method of the concrete product curing device is as follows: after the concrete product is subjected to the processes of material distribution, stress tension and centrifugation, the concrete product is placed on the sample rack 11 in the steam curing tank 5 with the mold, and is placed for 2-4h for pre-curing of the concrete; the exhaust port 8 of the steam curing tank 5 is opened, and the high-temperature fan 3 and the air inlet valve 4 are opened at the same time, and the tail gas of the cement kiln 1 is continuously introduced for 0.5h to empty the original gas in the steam curing tank 5; the exhaust port 8 is closed, and the temperature sensor 6 and the humidity sensor 7 are opened at the same time to monitor the temperature and humidity in the steam curing tank 5 in real time, and the tail gas of the cement kiln 1 is continuously introduced until the temperature rises to the curing temperature, and then the air inlet valve 4 is closed; after the curing is completed, the exhaust port 8 is opened, and after the temperature in the steam curing tank 5 decreases, the concrete product is taken out and placed in the stockyard for continuous curing.
[0052] If the curing temperature is too low during the curing process, the air inlet valve 4 can be opened, the exhaust port 8 can be opened, and the tail gas of the cement kiln 1 in the steam curing tank 5 can be replaced to increase the temperature in the steam curing tank 5; if the humidity is too high during the curing process, the liquid level in the liquid storage area 10 can be lowered to below the gas outlet end 13 of the liquid storage area 10 by opening the liquid discharge port 9 to adjust the humidity in the steam curing tank 5.
[0053] The concrete product preparation system provided by the embodiment comprises a cement kiln 1 and the concrete product curing device, so that the technical advantages and effects achieved by the concrete product preparation system include the technical advantages and effects achieved by the concrete product curing device, which will not be described herein.
[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A concrete product curing device, characterized in that, include: Steam curing tank (5), sample rack (11) and gas pipeline (2); Along the depth direction of the steam curing tank (5), a sample curing area (12) and a liquid storage area (10) are arranged in sequence in the steam curing tank (5); The sample rack (11) is located in the sample curing area (12) and is used to place concrete products; The gas pipeline (2) has an inlet end (18) and an outlet end (13). The inlet end (18) is used to connect with the tail gas outlet of the cement kiln (1). The liquid storage area (10) is provided with at least one outlet end (13).
2. The concrete product curing device according to claim 1, characterized in that, The sample curing area (12) is provided with at least one of the air outlets (13).
3. The concrete product curing device according to claim 2, characterized in that, The air outlet (13) located in the sample preservation area (12) is located below the sample holder (11).
4. The concrete product curing device according to any one of claims 1-3, characterized in that, The steam incubator (5) is provided with air outlets (13) on both sides.
5. The concrete product curing device according to any one of claims 1-3, characterized in that, The air outlet (13) is provided with multiple air outlets (14).
6. The concrete product curing device according to any one of claims 1-3, characterized in that, The steam curing tank (5) is equipped with a tank cover (15); A temperature sensor (6) is provided on the pool cover (15), and / or a humidity sensor (7) is provided on the pool cover (15).
7. The concrete product curing device according to any one of claims 1-3, characterized in that, The sample holder (11) includes a frame (16) and a multi-layer plate (17) disposed on the frame (16), and the spacing between adjacent plates (17) is adjustable.
8. The concrete product curing device according to any one of claims 1-3, characterized in that, The gas pipeline (2) is equipped with a high-temperature fan (3) and an air inlet valve (4), and the high-temperature fan (3) is located upstream of the air inlet valve (4).
9. The concrete product curing device according to any one of claims 1-3, characterized in that, The side wall of the steam curing tank (5) is provided with an exhaust port (8), and the exhaust port (8) is located above the sample rack (11); and / or; The bottom wall of the steam curing tank (5) is provided with a drain outlet (9).
10. A concrete product preparation system, characterized in that, It includes a cement kiln (1) and a concrete product curing device as described in any one of claims 1-9.