Nano early strength agent synergistic steam curing device and method

Abstract

The invention discloses a nanometer early strength agent synergistic steam curing device and method, and the device comprises a waste heat recovery pipeline which is in thermal coupling connection with a steam curing kettle and is used for absorbing heat generated in the working process of the steam curing kettle; the preheating box is connected with the waste heat recovery pipeline and receives the heat transmitted by the waste heat recovery pipeline so as to preheat the next batch of processing materials; the waste gas treatment assembly is connected to an exhaust valve of the steam curing kettle and comprises a cooling unit and a purification unit, the cooling unit is used for cooling water vapor in waste gas into condensate water, and the purification unit is used for receiving and purifying the waste gas treated by the cooling unit. According to the nanometer early strength agent synergistic steam curing device and method, through the synergistic effect of a preheating mechanism and a nanometer early strength agent, the curing environment is optimized, the curing effect and the production efficiency are improved, and harmless treatment of waste gas is achieved through the waste gas treatment assembly.

Description

Technical Field

[0001] This invention relates to a steam curing device and method synergistic with nano-early strength agents, belonging to the field of concrete component production technology. Background Technology

[0002] In the production of concrete components, steam curing is a key process for improving the early strength of concrete and shortening the production cycle. Traditional steam curing equipment often suffers from problems such as low heat utilization, slow cooling of the equipment after steam curing, and direct emission of waste gas, which pollutes the environment. On the one hand, a large amount of waste heat generated during the operation of the steam curing kettle is not effectively recovered and is directly lost, resulting in energy waste and increased production costs. On the other hand, the waste gas generated during steam curing contains water vapor and a small amount of harmful gases, and direct emission can not only cause abnormal humidity in the surrounding environment but also pollute the atmosphere. At the same time, traditional equipment lacks a targeted preheating mechanism. The concrete material to be processed, which contains nano-early strength agents, needs to be heated from room temperature to extend the overall curing cycle. Moreover, the slow cooling of the steam curing kettle after steam curing affects the processing efficiency of subsequent batches. In addition, the effectiveness of nano-early strength agents depends on a stable temperature environment. The large temperature fluctuations in traditional equipment make it difficult to fully realize their synergistic effect of early strength.

[0003] Therefore, in order to solve the above-mentioned technical problems, there is an urgent need for a steam curing device and method that combines nano-early strength agents. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a steam curing device and method with the synergistic effect of nano-early strength agent. Through the synergistic effect of preheating mechanism and nano-early strength agent, the curing environment is optimized, the curing effect and production efficiency are improved, and the waste gas is harmlessly treated through the waste gas treatment component.

[0005] To achieve the above objectives / to solve the above technical problems, the present invention is implemented using the following technical solution: In a first aspect, the present invention provides a steam curing device synergistic with a nano-early strength agent, comprising: Waste heat recovery pipeline, which is thermally coupled to the steam curing kettle, is used to absorb the heat generated during the operation of the steam curing kettle; A preheating box, connected to the waste heat recovery pipeline, receiving heat transferred by the waste heat recovery pipeline to preheat the next batch of processed materials; and An exhaust gas treatment assembly is connected to the exhaust valve of the steam curing kettle and is used to treat the exhaust gas discharged from the steam curing kettle. The exhaust gas treatment assembly includes a cooling unit and a purification unit. The cooling unit is used to cool the water vapor in the exhaust gas into condensate, and the purification unit is used to receive and purify the exhaust gas after it has been treated by the cooling unit.

[0006] Furthermore, the waste heat recovery pipeline is wound around the steam curing kettle to form a circulation loop; The outlet end of the waste heat recovery pipeline is located at the bottom of the steam curing kettle, and the outlet end is vortex-shaped and attached to the bottom side wall of the steam curing kettle to absorb heat. It is connected in sequence to the cooling water supply end with a water pump and the return water port of the preheating box through the water delivery pipe. The inlet of the waste heat recovery pipeline is located at the top of the steam curing kettle and is connected to the outlet of the preheating box through a recovery water pipe.

[0007] Furthermore, a receiving cavity is provided between the inner wall and the outer wall of the preheating box, and a first preheating water pipe and a second preheating water pipe that are interconnected are provided in the receiving cavity; The first preheating water pipe is arranged in a vortex shape at the bottom of the receiving cavity, and its outlet end is connected to the water outlet of the preheating box and connected to the recycling water pipe through the water outlet; The second preheating water pipe is spirally arranged inside the receiving cavity, with its inlet end connected to the return water port of the preheating box and connected to the delivery water pipe through the return water port.

[0008] Furthermore, the purification unit includes a connecting air pipe, an air outlet pipe, and a purified water cup, wherein, The inlet of the connecting air pipe is connected to the exhaust valve of the steam sterilizer, and the outlet is connected to the inlet of the air outlet pipe. The purified water cup contains purified liquid. One end of the air outlet pipe is connected to the outlet of the connecting air pipe, and the other end is immersed below the surface of the purified liquid.

[0009] Furthermore, the cooling unit includes a water-cooled cooler, an outlet pipe, and a receiving pipe, wherein, The water-cooled cooler is installed on the connecting gas pipe and is used to cool the exhaust gas flowing through the connecting gas pipe; The connecting gas pipe has a condensate drain outlet, the water outlet pipe is connected to the condensate drain outlet, and the water receiving pipe is connected to the outlet end of the water outlet pipe to receive the condensate.

[0010] Furthermore, a buffer assembly is also provided inside the water inlet pipe. The buffer assembly includes a fixing plate and a spring. The fixing plate is slidably and sealingly installed on the inner wall of the water inlet pipe by a sealing ring; One end of the spring is connected to the fixed plate, and the other end is connected to the limiting part on the inner wall of the water inlet pipe, which is used to provide elastic restoring force for the fixed plate.

[0011] Furthermore, the bottom of the purified water cup is provided with a drainage structure, which includes a guide channel formed at the bottom of the purified water cup and a sinking channel formed at the bottom end of the purified water cup. The bottom of the guide channel is provided with a threaded hole that connects to the sinking channel, and a sealing block is threadedly connected inside the threaded hole; A rotating block is fixedly provided at the bottom end of the sealing block. The rotating block is located in the sinking groove and is used to drive the sealing block to rotate to open or close the threaded hole.

[0012] In a second aspect, the present invention provides a steam curing method for use in the steam curing apparatus with nano-early strength agent synergy described in the first aspect, comprising: After adding a nano-early strength agent to the aerated concrete blank, it is steam-cured in an autoclave. During the steam curing process, the heat emitted by the steam curing kettle is absorbed simultaneously through the waste heat recovery pipeline and transferred to the preheating box; The heat transferred by the waste heat recovery pipeline is used to preheat the next batch of processed material with added nano early strength agent in the preheating box; After the steam curing of the current batch of processed materials is completed, the exhaust gas discharged from the steam curing kettle is introduced into the exhaust gas treatment component. After the water vapor is removed by the cooling unit, it is then purified by the purification unit.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The steam curing device and method with nano-early strength agent synergy provided by the present invention realizes the synergistic function of waste heat recovery, preheating and rapid cooling, and solves the problems of waste heat waste and slow cooling of traditional devices. The steam curing device and method with nano-early strength agent synergy provided by the present invention achieves harmless treatment of waste gas through waste gas treatment components, making up for the environmental shortcomings of direct emission of waste gas in traditional devices. The steam curing device and method synergistic with nano-early strength agents provided by this invention optimizes the curing environment and improves curing effect and production efficiency through the synergistic effect of preheating mechanism and nano-early strength agents. Attached Figure Description

[0014] Figure 1 This is a first-view schematic diagram of the overall structure of the present invention; Figure 2 This is a second perspective view of the overall structure of the present invention; Figure 3 This is a split view of the preheating box of the present invention; Figure 4 This is a perspective view of the connecting trachea of ​​the present invention; Figure 5 This is a cross-sectional view of the preheating box of the present invention; Figure 6 This is a split view of the water inlet pipe of the present invention; Figure 7 This is an exploded view of the purified water cup of the present invention; Figure 8 This is a cross-sectional view of the purified water cup of the present invention.

[0015] In the picture: 1. Steam curing kettle; 21. Waste heat recovery pipeline; 22. Preheating box; 23. Connecting parts; 24. Water delivery pipe; 25. Water recovery pipe; 26. Receiving cavity; 28. First preheating water pipe; 29. ​​Second preheating water pipe; 210. Box cover; 27. Cooling water supply end; 3. Waste gas cooling and purification treatment assembly; 31. Connecting air pipe; 32. Water cooler; 33. Inlet and outlet; 34. Water outlet pipe; 35. Air outlet pipe; 36. Water receiving pipe; 361. Spring; 362. Fixing plate; 37. Purified water cup; 371. Guide channel; 372. Threaded hole; 373. Sinking channel; 374. Sealing block; 375. Rotating block; 4. Exhaust valve; 5. Regulating valve. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1

[0019] like Figure 1 and Figure 2 As shown, this embodiment provides a steam curing device synergistic with a nano-early strength agent, comprising: Waste heat recovery pipeline 21 is thermally coupled to steam curing vessel 1 and is used to absorb the heat generated during the operation of steam curing vessel 1. A preheating box 22, connected to the waste heat recovery pipeline 21, receives heat transferred by the waste heat recovery pipeline 21 to preheat the next batch of processed materials; and The exhaust gas treatment component 3 is connected to the exhaust valve 4 of the steam curing kettle 1 and is used to treat the exhaust gas discharged from the steam curing kettle 1. The exhaust gas treatment component 3 includes a cooling unit and a purification unit. The cooling unit is used to cool the water vapor in the exhaust gas into condensate, and the purification unit is used to receive and purify the exhaust gas after the cooling unit has treated it.

[0020] In the above technical solution, the waste heat generated during the operation of the steam curing kettle 1 is fully recovered and used for the preheating of the material to be processed by the cooperation of the waste heat recovery pipeline 21 and the preheating box 22. This reduces the energy waste caused by the direct loss of waste heat, reduces the overall energy consumption of steam curing, and reduces carbon emissions. At the same time, the waste heat recovery process simultaneously achieves rapid cooling of the steam curing kettle 1 without the need for additional energy consumption for cooling, further improving energy utilization efficiency and conforming to the environmental protection concept of energy conservation and carbon reduction. After the material to be processed is preheated in the preheating box 22, the heating time can be shortened when it enters the steam curing kettle 1 for steam curing. Combined with the early strength synergistic effect of the nano early strength agent, the early strength of concrete is significantly improved, the overall production cycle is shortened, the equipment turnover efficiency is improved, the number of production batches per unit time is increased, the energy consumption is reduced, the production cost is reduced directly, and the waste gas treatment process does not require complex equipment investment. The exhaust gas treatment component 3 achieves staged treatment of exhaust gas. First, the water vapor is liquefied and recovered through the cooling unit, and then the harmful gases are absorbed and filtered through the purification unit, reducing the pollution caused to the environment by direct emission of exhaust gas. The preheating function of the preheating box 22 ensures that the material to be processed has a certain temperature before entering the steam curing kettle 1, reducing temperature fluctuations during the steam curing process. This provides a stable temperature environment for the nano early strength agent to exert its synergistic early strength effect, further improving the early strength and curing quality of concrete components and ensuring that the product performance meets the standards. Multiple mounting seats are evenly spaced on the upper part of the outer wall of the steam curing vessel 1. A feed inlet is provided on one side of the upper end face of the steam curing vessel 1. A sealing cover is provided on one side of the feed inlet through a fixing frame adjustment frame. The sealing cover is placed on the feed inlet.

[0021] The preheating box 22 is also equipped with a box cover 210, which can maintain the internal temperature and reduce heat loss during the preheating process; the steam curing kettle 1 is also equipped with a regulating valve 5, which is used to regulate the steam pressure inside the kettle to ensure a stable curing environment. Example 2

[0022] This embodiment provides a steam curing device with synergistic effect of nano-early strength agent, which, based on Embodiment 1, further defines the following structure: like Figure 1 and Figure 2 As shown, the waste heat recovery pipeline 21 is wound around the steam curing kettle 1 to form a circulation loop; The outlet end of the waste heat recovery pipeline 21 is located at the bottom of the steam curing kettle 1, and the outlet end is attached to the bottom side wall of the steam curing kettle 1 in a vortex shape to absorb heat, and is connected in sequence to the cooling water supply end 27 with a water pump and the return water port of the preheating box 22 through the water delivery pipe 24. The outlet end of the waste heat recovery pipeline 21 is located at the top of the steam curing kettle 1 and is connected to the outlet of the preheating box 22 through the recovery water pipe 25. The water pump is used to provide kinetic energy for the water circulation in the waste heat recovery pipeline 21. The cooling water injected into the cooling water supply end 27 provides a medium for heat circulation. When the circulating water in the waste heat recovery pipeline 21 passes through the cooling water supply end, it is cooled outside the waste heat recovery pipeline 21 by the cooling water. The cooling water supply end 27 can maintain the cooling effect on the circulating water by replacing the cold water in the cooling water supply end 27. The hot water replaced from the cooling water supply end 27 can be used for other operations. The cooling water supply end 27 is an open pool. The open pool can quickly dissipate heat from the water heated inside, extending the water replacement time in the cooling water supply end 27.

[0023] like Figure 3 and Figure 5 As shown, a receiving cavity 26 is provided between the inner wall and the outer wall of the preheating box 22, and a first preheating hot water pipe 28 and a second preheating hot water pipe 29 that are interconnected are provided in the receiving cavity 26. The first preheating water pipe 28 is arranged in a vortex shape at the bottom of the receiving cavity 26, and its outlet end is connected to the water outlet of the preheating box 22, and is connected to the recovery water pipe 25 through the water outlet; The second preheating water pipe 29 is spirally arranged in the receiving cavity 26, and its inlet end is connected to the return water port of the preheating box 22, and is connected to the delivery water pipe 24 through the return water port.

[0024] like Figure 1 and Figure 4 As shown, the purification unit includes a connecting air pipe 31, an air outlet pipe 35, and a purified water cup 37, wherein... The inlet of the connecting air pipe 31 is connected to the exhaust valve 4 of the steam sterilizer 1, and the outlet is connected to the inlet of the air outlet pipe 35. The purified water cup 37 is filled with purified liquid. One end of the air outlet pipe 35 is connected to the outlet of the connecting air pipe 31, and the other end is immersed below the surface of the purified liquid.

[0025] like Figure 1 and Figure 4 As shown, the cooling unit includes a water-cooled cooler 32, a water outlet pipe 34, and a water inlet pipe 36, wherein... The water-cooled cooler 32 is installed on the connecting air pipe 31 and is used to cool the exhaust gas flowing through the connecting air pipe 31. The water-cooled cooler 32 is provided with an inlet and an outlet 33, which include a water inlet and a water outlet, and the water inlet is located below the water outlet for cooling water to enter and exit. The connecting pipe 31 has a condensate drain outlet, the water outlet pipe 34 is connected to the condensate drain outlet, and the water receiving pipe 36 is connected to the outlet end of the water outlet pipe 34 to receive the condensate.

[0026] like Figure 6 As shown, a buffer assembly is also provided inside the water inlet pipe 36. The buffer assembly includes a fixing plate 362 and a spring 361. The fixing plate 362 is slidably and sealingly installed on the inner wall of the water inlet pipe 36 by a sealing ring; One end of the spring 361 is connected to the fixing plate 362, and the other end is connected to the limiting part on the inner wall of the water inlet pipe 36, which is used to provide elastic restoring force for the fixing plate 362; The spring 361 and the fixing plate 362 can shorten the distance and time of the water droplets falling freely from the water outlet pipe 34, thus reducing the water splashes caused by long-distance water droplets falling and improving the water receiving effect of the water receiving pipe 36. As the amount of water inside the water receiving pipe 36 increases, the gravity on the spring 361 increases, causing the spring 361 to contract accordingly. The fixing plate 362 moves down, making room for the water receiving pipe 36 to receive water.

[0027] likeFigure 7 and Figure 8 As shown, the bottom of the purified water cup 37 is provided with a drainage structure, which includes a guide channel 371 formed in the bottom of the purified water cup 37 and a sinkhole 373 formed at the bottom end of the purified water cup 37. The bottom of the guide channel 371 is provided with a threaded hole 372 that connects to the sinking channel 373, and a sealing block 374 is threadedly connected to the threaded hole 372. A rotating block 375 is fixedly provided at the bottom end of the sealing block 374. The rotating block 375 is located in the sinking groove 373 and is used to drive the sealing block 374 to rotate to open or close the threaded hole 372. The top of the sealing block 374 has an open groove. Impurities in the purified water cup 37 are guided into the groove on the top of the sealing block 374 through the guide channel 371 for subsequent centralized treatment.

[0028] The following is a further explanation of the workflow of each stage of the steam curing device provided in this embodiment: Steam curing and heat storage: The concrete material mixed with nano early strength agent is put into the steam curing kettle 1 through the feed port. After the sealing cover is closed, the steam curing kettle 1 is started for steam curing. The heat generated when the steam curing kettle 1 is working not only acts on the internal material, but also is conducted through the kettle wall to the waste heat recovery pipe 21 embedded and coiled on the steam curing kettle 1. The water in the waste heat recovery pipe 21 absorbs and stores the heat. At the same time, the concrete material to be processed is placed in the preheating box 22 in advance to prepare for subsequent preheating. The cooling water injected into the cooling water supply end 27 provides a medium for heat circulation. Waste heat recovery, preheating, and rapid cooling work in synergy: After the material in the steam curing kettle 1 has been cured and removed, the water pump is started. The hot water stored in the waste heat recovery pipeline 21 is transported to the preheating box 22 through the delivery water pipe 24. It flows through the second preheating hot water pipe 29 and the first preheating hot water pipe 28 in sequence. After exchanging heat with the material to be processed in the preheating box 22, the water with lower temperature flows back to the waste heat recovery pipeline 21, forming a closed loop. The vortex arrangement of the first preheating hot water pipe 28 increases the contact area with the material to be processed in the preheating box 22, and the vertical spiral arrangement of the second preheating hot water pipe 29 extends the flow path of the hot water. The two work together to ensure that the hot water and the material to be processed can fully exchange heat, thus achieving preheating of the material to be processed. At the same time, during the circulation process, the cooler water in the first preheating hot water pipe 28 and the second preheating hot water pipe 29 continuously enters the waste heat recovery pipeline 21. Through heat exchange, it removes the heat from the kettle wall of the steam curing kettle 1, thus achieving rapid cooling of the steam curing kettle 1 and shortening the equipment turnaround time. Waste gas treatment process: During and after steam curing, the exhaust valve 4 is opened, and the waste gas generated in the steam curing kettle 1 enters the water-cooled cooler 32 through the connecting gas pipe 31. Cooling water flows in from the inlet of the water-cooled cooler 32 and out from the outlet, cooling the waste gas and causing the water vapor in the waste gas to condense into condensate. The condensate flows into the water receiving pipe 36 below through the water outlet pipe 34. As the amount of condensate in the water receiving pipe 36 increases, the fixing plate 362 moves down under gravity and squeezes the spring 361, fixing... The sealing ring on the outer wall of plate 362 ensures the airtightness of the water pipe 36 and prevents condensate leakage. The remaining gas after removing water vapor enters the purified water cup 37 through the gas outlet pipe 35. The purified liquid in the purified water cup 37 absorbs and filters harmful substances in the gas. The impurities produced by filtration are guided by the flow channel 371 and converge at the threaded hole 372 and deposit on the upper end face of the sealing block 374. By periodically rotating the rotating block 375, the sealing block 374 can be unscrewed from the threaded hole 372 to clean the deposited impurities.

[0029] Implementation Three: This embodiment provides a steam curing method for implementing the steam curing device with nano-early strength agent synergy as described in embodiment one or two, comprising: When applied to Example 1, the steam curing method includes: After adding a nano-early strength agent to the aerated concrete blank, it is steam-cured in steam curing kettle 1. During the steam curing process, the heat emitted by the steam curing kettle 1 is simultaneously absorbed through the waste heat recovery pipeline 21 and transferred to the preheating box 22; The heat transferred by the waste heat recovery pipeline 21 is used to preheat the next batch of processed material with added nano early strength agent in the preheating box 22; After the steam curing of the current batch of processed materials is completed, the exhaust gas discharged from the steam curing kettle 1 is introduced into the exhaust gas treatment component 3. After the water vapor is removed by the cooling unit, it is then purified by the purification unit. When applied to Example 2, the steam curing method further includes the following specific operations: a: Preheating and steam curing stage The second batch of concrete material mixed with nano-early strength agent to be processed is placed inside the preheating box 22, and cooling water is injected into the cooling water supply end 27; the steam curing kettle 1 is started to steam cure the first batch of material to be processed. The heat generated by the steam curing kettle 1 during operation is conducted to the waste heat recovery pipe 21 embedded in the outer wall of the steam curing kettle 1, which is used for preheating the next batch of material in the preheating box 22. b: Waste heat recovery and rapid cooling stage When the processing of the material is completed and the material stored in the steam curing kettle 1 is removed, the water pump is started. The hot water in the waste heat recovery pipe 21 on the outer wall of the steam curing kettle 1 is circulated through the water delivery pipe 24 to the second preheating hot water pipe 29 in the preheating box 22, then flows into the first preheating hot water pipe 28, and finally flows back to the waste heat recovery pipe 21 through the recovery water pipe 25. The vortex arrangement of the first preheating hot water pipe 28 and the vertical spiral arrangement of the second preheating hot water pipe 29 enable the hot water to fully exchange heat with the raw material to be processed inside the preheating box 22, thereby achieving preheating. At the same time, the water with a lower temperature in the first preheating hot water pipe 28 and the second preheating hot water pipe 29 is transported to the waste heat recovery pipe 21 on the outer wall of the steam curing kettle 1 to rapidly cool the steam curing kettle 1. c: Exhaust gas cooling and liquefaction stage During and after steam curing, the exhaust valve 4 is opened, and the exhaust gas generated in the steam curing kettle 1 enters the water-cooled cooler 32 through the connecting gas pipe 31; cooling water enters the water-cooled cooler 32 from the inlet of the inlet 33 and flows out from the outlet to cool the exhaust gas; the water vapor in the exhaust gas liquefies upon cooling to form condensate, which flows into the water receiving pipe 36 through the water outlet pipe 34; as the water volume inside the water receiving pipe 36 increases, the fixing plate 362 moves down and squeezes the spring 361, and the sealing ring ensures the sealing between the fixing plate 362 and the inner wall of the water receiving pipe 36; d: Harmful gas purification stage The remaining gas after cooling and removing water vapor enters the purified water cup 37 through the gas outlet pipe 35. The purified liquid in the purified water cup 37 absorbs and filters the gas containing harmful substances. The guide groove 371 guides the impurities purified inside the purified water cup 37 to settle in the groove at the top of the sealing block 374. e: Impurity cleaning stage Rotate the rotating block 375 periodically to unscrew the sealing block 374 out of the threaded hole 372 and remove it. Clean the impurities deposited in the groove of the sealing block 374. After cleaning, screw the sealing block 374 back into the threaded hole 372.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A steam curing device synergistic with a nano-early strength agent, characterized in that, include: Waste heat recovery pipeline (21), which is thermally coupled to the steam curing kettle (1) and is used to absorb the heat generated during the operation of the steam curing kettle (1); A preheating box (22), connected to the waste heat recovery pipeline (21), receives heat transferred by the waste heat recovery pipeline (21) to preheat the next batch of processed materials; and Waste gas treatment component (3), which is connected to the exhaust valve (4) of the steam curing kettle (1), is used to treat the waste gas discharged from the steam curing kettle (1). The waste gas treatment component (3) includes a cooling unit and a purification unit. The cooling unit is used to cool the water vapor in the waste gas into condensate, and the purification unit is used to receive and purify the waste gas after the cooling unit has been treated.

2. The steam curing device with synergistic effect of nano-early strength agent according to claim 1, characterized in that, The waste heat recovery pipeline (21) is wound around the steam curing kettle (1) to form a circulation loop; The outlet end of the waste heat recovery pipeline (21) is located at the bottom of the steam curing kettle (1), and the outlet end is attached to the bottom side wall of the steam curing kettle (1) in a vortex shape to absorb heat, and is connected in sequence to the cooling water supply end (27) with a water pump and the return water port of the preheating box (22) through the water delivery pipe (24). The inlet end of the waste heat recovery pipeline (21) is located at the top of the steam curing kettle (1) and is connected to the outlet of the preheating box (22) through the recovery water pipe (25).

3. The steam curing device with synergistic effect of nano-early strength agent according to claim 2, characterized in that, A receiving cavity (26) is provided between the inner wall and the outer wall of the preheating box (22), and a first preheating hot water pipe (28) and a second preheating hot water pipe (29) are provided in the receiving cavity (26). The first preheating water pipe (28) is arranged in a vortex shape at the bottom of the receiving cavity (26), and its outlet end is connected to the water outlet of the preheating box (22), and is connected to the recovery water pipe (25) through the water outlet; The second preheating water pipe (29) is spirally arranged in the receiving cavity (26), and its inlet end is connected to the return water port of the preheating box (22), and is connected to the delivery water pipe (24) through the return water port.

4. The steam curing device with synergistic effect of nano-early strength agent according to claim 1, characterized in that, The purification unit includes a connecting air pipe (31), an air outlet pipe (35), and a purified water cup (37), wherein, The inlet of the connecting air pipe (31) is connected to the exhaust valve (4) of the steaming kettle (1), and the outlet is connected to the inlet of the air outlet pipe (35). The purified water cup (37) is filled with purified liquid. One end of the air outlet pipe (35) is connected to the outlet of the connecting air pipe (31), and the other end is immersed below the surface of the purified liquid.

5. The steam curing device with nano-early strength agent synergy according to claim 4, characterized in that, The cooling unit includes a water-cooled cooler (32), a water outlet pipe (34), and a water inlet pipe (36), wherein, The water-cooled cooler (32) is installed on the connecting gas pipe (31) and is used to cool the exhaust gas flowing through the connecting gas pipe (31); The connecting pipe (31) is provided with a condensate drain outlet, the water outlet pipe (34) is connected to the condensate drain outlet, and the water receiving pipe (36) is connected to the outlet end of the water outlet pipe (34) for receiving the condensate.

6. The steam curing device with synergistic effect of nano-early strength agent according to claim 5, characterized in that, The water inlet pipe (36) is also equipped with a buffer assembly, which includes a fixing plate (362) and a spring (361). The fixing plate (362) is slidably and sealingly installed on the inner wall of the water inlet pipe (36) by a sealing ring; One end of the spring (361) is connected to the fixed plate (362), and the other end is connected to the limiting part on the inner wall of the water pipe (36), which is used to provide elastic restoring force for the fixed plate (362).

7. The steam curing device with nano-early strength agent synergy according to claim 6, characterized in that, The bottom of the purified water cup (37) is provided with a drainage structure, which includes a guide groove (371) formed at the bottom of the purified water cup (37) and a sinkhole (373) formed at the bottom end of the purified water cup (37). The bottom of the guide channel (371) is provided with a threaded hole (372) that connects to the sinking channel (373), and a sealing block (374) is threadedly connected inside the threaded hole (372). A rotating block (375) is fixedly provided at the bottom end of the sealing block (374). The rotating block (375) is located in the sinking groove (373) and is used to drive the sealing block (374) to rotate to open or close the threaded hole (372).

8. A steam curing method, used in the steam curing apparatus with synergistic effect of the nano-early strength agent as described in any one of claims 1-7, characterized in that, The method includes: After adding nano-early strength agent to the aerated concrete blank, it is steam-cured in an autoclave (1); During the steam curing process, the heat emitted by the steam curing kettle (1) is simultaneously absorbed through the waste heat recovery pipeline (21) and transferred to the preheating box (22). The heat transferred by the waste heat recovery pipeline (21) is used to preheat the next batch of processing material with added nano early strength agent in the preheating box (22); After the steam curing of the current batch of processed materials is completed, the exhaust gas discharged from the steam curing kettle (1) is introduced into the exhaust gas treatment component (3), and after the water vapor is removed by the cooling unit, it is then purified by the purification unit.

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