A steam pressure concrete block afterheat circulating autoclave

Abstract

This utility model relates to a steam-pressurized concrete block waste heat circulation autoclave, belonging to the field of autoclave technology. It includes an autoclave body, a steam boiler, and a waste heat utilization box. The steam outlet of the steam boiler is connected to the steam inlet of the autoclave body, the exhaust end of the autoclave body is connected to the waste heat utilization box, and the condensate outlet of the autoclave body is connected to the waste heat utilization box. A water injection pipe is fixedly installed on one side of the waste heat utilization box, and a connecting pipe is fixedly installed on the other side, connecting to the water inlet of the steam boiler. After the condensate and steam inside the autoclave are discharged, the waste heat utilization box is used to circulate the waste heat in the steam and condensate, and to perform staged heating of the newly added water. The condensate performs preliminary heat exchange with the water, while the steam performs secondary heating of the water, increasing the temperature at the water inlet of the steam boiler, thereby reducing the energy consumption of the steam boiler and facilitating the recycling of waste heat.

Description

Technical Field

[0001] This utility model relates to the field of autoclave technology, and in particular to a steam-pressurized concrete block waste heat circulation autoclave. Background Technology

[0002] Steam-pressurized concrete blocks are porous concrete products made from fly ash, lime, cement, gypsum, slag, and other main raw materials, with the addition of appropriate amounts of foaming agents, regulators, and bubble stabilizers. The process involves batching, mixing, pouring, static curing, cutting, and high-pressure steam curing. High-pressure steam curing requires the use of an autoclave, also known as a steam curing vessel or pressure autoclave. This is a large, heavy pressure vessel. During curing, the steam-pressurized concrete blocks are placed inside the autoclave, and high-temperature steam is introduced for high-temperature, high-pressure steam curing. To maintain the high temperature and high pressure, steam needs to be continuously introduced into the autoclave, and excess steam needs to be discharged. However, the discharged steam and the condensed water carry residual heat. Directly discharging this heat would waste energy. Therefore, an autoclave capable of recycling this residual heat is needed to achieve energy savings. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a steam-pressurized concrete block waste heat circulation autoclave, which facilitates the utilization of waste heat in the discharged steam and condensate, reduces energy consumption, and improves energy-saving effect.

[0004] The technical solution adopted in this utility model is: a steam-pressurized concrete block waste heat circulation autoclave, including an autoclave body, a steam boiler, and a waste heat utilization box. The steam outlet of the steam boiler is connected to the steam inlet of the autoclave body, the exhaust of the autoclave body is connected to the waste heat utilization box, and the condensate outlet of the autoclave body is connected to the waste heat utilization box. A water injection pipe is fixedly installed on one side of the waste heat utilization box, and a connecting pipe is fixedly installed on the other side of the waste heat utilization box. The connecting pipe is connected to the water inlet of the steam boiler. In use, the steam-pressurized concrete blocks to be cured are placed inside the autoclave body, and... High-temperature steam is introduced into the autoclave body through the steam boiler, which increases the temperature and pressure inside the autoclave body to achieve the effect of steam curing of steam-pressurized concrete blocks. During continuous steam supply, the steam inside the autoclave body is discharged into the waste heat utilization box, and the condensate generated inside the autoclave body during the curing process is also discharged into the waste heat utilization box. The condensate provides initial heating to the water supplied through the water injection pipe, and the discharged steam provides secondary heating to the supplied water. The heated water is then supplied to the steam boiler through the connecting pipe, reducing the energy consumption of the steam boiler when heating water into steam.

[0005] Preferably, an isolation plate is fixedly installed parallel to the middle of the interior of the waste heat utilization box, and a spiral heat exchange tube is fixedly installed on one side of the interior of the waste heat utilization box. One end of the spiral heat exchange tube is connected to the water injection pipe, and the other end of the spiral heat exchange tube is connected to the space formed by the isolation plate. The interior of the waste heat utilization box is divided into two areas, left and right, by the isolation plate. The water supplied is heated by waste heat through condensate and steam, respectively. When condensate is used to heat the replenishment water, the heat exchange effect with the condensate is improved by using the spiral heat exchange tube.

[0006] Preferably, a water collection hopper is fixedly installed at the lower end of the autoclave body, and a condensate pipe is fixedly installed on one side of the water collection hopper. The condensate pipe is connected to the waste heat utilization box, and the connection point between the condensate pipe and the waste heat utilization box is located below the spiral heat exchange tube. Through the water collection hopper and the condensate pipe, it is convenient to collect the condensate that condenses in the autoclave body and supply it to the interior of the waste heat utilization box.

[0007] Preferably, a wastewater discharge pipe is fixedly installed on the upper surface of the waste heat utilization box above the spiral heat exchange tube, so that the wastewater can be discharged through the wastewater discharge pipe after the waste heat in the condensate is utilized.

[0008] Preferably, an aeration plate is fixedly installed inside the waste heat utilization box on the other side of the isolation plate, and the lower end of the aeration plate is connected to the steam discharge end of the autoclave body. The isolation plate inside the waste heat utilization box on one side of the aeration plate is a perforated plate. After the makeup water exchanges heat with the condensate through the spiral heat exchange tube, the aeration plate further subdivides the steam into tiny bubbles to heat the makeup water.

[0009] Preferably, a baffle is fixedly installed inside the waste heat recovery box on the other side of the aeration disc. The height of the baffle is less than the height of the inside of the waste heat recovery box, and the height of the connecting pipe is lower than the height of the baffle, so as to prevent steam from being supplied to the inside of the steam boiler.

[0010] Preferably, an exhaust valve is fixedly installed at the upper end of the waste heat utilization box above the aeration disc, and a steam discharge pipe is fixedly installed at the upper end of the autoclave body. The steam discharge pipe is connected to the lower end of the aeration disc. After the steam heats the makeup water, it is discharged through the exhaust valve, and excess steam in the autoclave body is supplied to the aeration disc through the steam discharge pipe.

[0011] Preferably, a bracket is fixedly installed at the lower end of the autoclave body, and a steam supply pipe is fixedly installed at the steam discharge end of the steam boiler. The steam supply pipe is connected to the steam inlet of the autoclave body. The bracket facilitates the installation of the autoclave body, and the steam supply pipe facilitates the supply of steam generated by the steam boiler into the autoclave body.

[0012] The beneficial effects of this utility model are: after the condensate and steam inside the autoclave are discharged, a waste heat recovery box is used to recycle the waste heat in the steam and condensate, and to heat the newly supplied water in stages. The condensate performs preliminary heat exchange on the water, while the steam performs secondary heating on the water, thereby increasing the temperature at the water inlet of the steam boiler, thereby reducing the energy consumption of the steam boiler and facilitating the recycling of waste heat. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle.

[0015] Figure 3 This is a schematic diagram of the structure of the present invention after removing the main body of the autoclave.

[0016] Figure 4 This is a schematic diagram of the structure of this utility model after partial cross-section.

[0017] Figure 5 This is a partial cross-sectional structural diagram of the waste heat utilization box of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Autoclave body; 2. Steam boiler; 3. Waste heat recovery box; 4. Water injection pipe; 5. Connecting pipe; 6. Isolation plate; 7. Spiral heat exchanger tube; 8. Water collection hopper; 9. Condensate pipe; 10. Wastewater discharge pipe; 11. Aeration disc; 12. Baffle; 13. Exhaust valve; 14. Steam discharge pipe; 15. Support frame; 16. Steam supply pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1-5 As shown, this embodiment provides a steam-pressurized concrete block waste heat circulation autoclave, including an autoclave body 1, a steam boiler 2, and a waste heat utilization box 3. The steam outlet of the steam boiler 2 is connected to the steam inlet of the autoclave body 1, the exhaust of the autoclave body 1 is connected to the waste heat utilization box 3, and the condensate discharge of the autoclave body 1 is connected to the waste heat utilization box 3. A water injection pipe 4 is fixedly installed on one side of the waste heat utilization box 3, and a connecting pipe 5 is fixedly installed on the other side of the waste heat utilization box 3. The connecting pipe 5 is connected to the water inlet of the steam boiler 2. A bracket 15 is fixedly installed at the lower end of the autoclave body 1, and a steam supply pipe 16 is fixedly installed at the steam exhaust of the steam boiler 2. The steam supply pipe 16 is connected to the steam inlet of the autoclave body 1. The bracket 15 facilitates the installation of the autoclave body 1, and the steam supply pipe 16 facilitates the supply of steam generated by the steam boiler 2 into the autoclave body 1 for steam curing of the steam-pressurized concrete blocks. During use, the steam-pressurized concrete blocks to be cured are placed inside the autoclave body 1, and high-temperature steam is introduced into the autoclave body 1 through the steam boiler 2, which increases the temperature and pressure inside the autoclave body 1 to achieve the effect of steam curing the steam-pressurized concrete blocks. When steam is continuously supplied, the steam inside the autoclave body 1 is discharged into the waste heat utilization box 3, and the condensate generated inside the autoclave body 1 during the steam curing process is also discharged into the waste heat utilization box 3. The autoclave body 1, the steam boiler 2, and the waste heat utilization box 3 are connected by a pump (not shown) for steam-liquid transportation, so that the condensate preheats the water supplied by the water injection pipe 4 and the waste heat in the condensate is recycled. The discharged steam reheats the supplied water, and the waste heat in the steam is recycled. The heated water is then supplied into the steam boiler 2 through the connecting pipe 5, reducing the energy consumption of the steam boiler 2 when heating water into steam.

[0021] As a technical optimization solution of this utility model, specifically as follows: Figure 3 and Figure 4 As shown, an isolation plate 6 is fixedly installed parallel to the center of the interior of the waste heat utilization box 3. A spiral heat exchange tube 7 is fixedly installed on one side of the interior of the waste heat utilization box 3. One end of the spiral heat exchange tube 7 is connected to the water injection pipe 4, and the other end of the spiral heat exchange tube 7 is connected to the space formed by the isolation plate 6. Inside the waste heat utilization box 3, the isolation plate 6 divides the space into two areas, left and right, which are heated by condensate and steam respectively. When using condensate to heat the makeup water, the spiral heat exchange tube 7 is used for heat exchange, which not only increases the contact area with the condensate but also prevents the condensate and makeup water from mixing. Since the condensate is hard water and the makeup water is soft water, this prevents hard water from entering the interior of the steam boiler 2. The furnace 2 has an impact. A water collection hopper 8 is fixedly installed at the lower end of the autoclave body 1. A condensate pipe 9 is fixedly installed on one side of the water collection hopper 8. The condensate pipe 9 is connected to the waste heat utilization box 3. The connection between the condensate pipe 9 and the waste heat utilization box 3 is located below the spiral heat exchange tube 7. Through the water collection hopper 8 and the condensate pipe 9, it is convenient to collect the condensate in the autoclave body 1 and supply it to the interior of the waste heat utilization box 3 to utilize the waste heat in the condensate. A wastewater discharge pipe 10 is fixedly installed on the upper surface of the waste heat utilization box 3 above the spiral heat exchange tube 7. After utilizing the waste heat in the condensate, it is convenient to discharge it through the wastewater discharge pipe 10. After external purification or hardening removal, it is recycled.

[0022] As a technical optimization solution of this utility model, specifically as follows: Figures 3 to 5 As shown, an aeration plate 11 is fixedly installed inside the waste heat utilization box 3 on the other side of the isolation plate 6. The lower end of the aeration plate 11 is connected to the steam discharge end of the autoclave body 1. The isolation plate 6 on one side of the aeration plate 11 inside the waste heat utilization box 3 is a perforated plate. After the makeup water exchanges heat with the condensate through the spiral heat exchange tube 7, it enters the aeration plate 11 through the isolation plate 6. The aeration plate 11 breaks the steam into tiny bubbles, which heat the makeup water and improve the utilization effect of the steam waste heat. A baffle 12 is fixedly installed inside the waste heat utilization box 3 on the other side of the aeration plate 11. The height of the baffle 12 is less than the height of the interior of the waste heat utilization box 3. The height of the connecting pipe 5 is lower than the height of the baffle 12, so that when water is added to the steam boiler 2, steam is not supplied to the interior of the steam boiler 2. The heated water overflows the baffle 12 and enters the interior of the connecting pipe 5. The upper end of the waste heat utilization box 3 is fixedly installed above the aeration plate 11 with an exhaust valve 13, and the upper end of the autoclave body 1 is fixedly installed with a steam discharge pipe 14. The steam discharge pipe 14 is connected to the lower end of the aeration plate 11. After the steam heats the water, it is discharged through the exhaust valve 13. The excess steam in the autoclave body 1 is supplied to the aeration plate 11 through the steam discharge pipe 14 to heat the water.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A steam-pressurized concrete block waste heat circulation autoclave, characterized in that: The system includes an autoclave body (1), a steam boiler (2), and a waste heat utilization box (3). The steam outlet of the steam boiler (2) is connected to the steam inlet of the autoclave body (1). The exhaust of the autoclave body (1) is connected to the waste heat utilization box (3). The condensate discharge of the autoclave body (1) is connected to the waste heat utilization box (3). A water injection pipe (4) is fixedly installed on one side of the waste heat utilization box (3), and a connecting pipe (5) is fixedly installed on the other side of the waste heat utilization box (3). The connecting pipe (5) is connected to the water inlet of the steam boiler (2).

2. The steam-pressurized concrete block waste heat circulation autoclave according to claim 1, characterized in that: An isolation plate (6) is fixedly installed in parallel at the middle position inside the waste heat utilization box (3). A spiral heat exchange tube (7) is fixedly installed on one side inside the waste heat utilization box (3). One end of the spiral heat exchange tube (7) is connected to the water injection pipe (4), and the other end of the spiral heat exchange tube (7) is connected to the space formed by the isolation plate (6).

3. The steam-pressurized concrete block waste heat circulation autoclave according to claim 2, characterized in that: A water collection hopper (8) is fixedly installed at the lower end of the autoclave body (1). A condensate pipe (9) is fixedly installed on one side of the water collection hopper (8). The condensate pipe (9) is connected to the waste heat utilization box (3), and the position where the condensate pipe (9) is connected to the waste heat utilization box (3) is located below the spiral heat exchange tube (7).

4. The steam-pressurized concrete block waste heat circulation autoclave according to claim 2, characterized in that: Wastewater discharge pipe (10) is fixedly installed on the upper surface of the waste heat utilization box (3) above the spiral heat exchange tube (7).

5. The autoclave for waste heat circulation of steam-pressurized concrete blocks according to claim 2, characterized in that: An aeration plate (11) is fixedly installed inside the waste heat utilization box (3) on the other side of the isolation plate (6), and the lower end of the aeration plate (11) is connected to the steam discharge end of the autoclave body (1). The isolation plate (6) inside the waste heat utilization box (3) on one side of the aeration plate (11) is a hollow plate.

6. The steam-pressurized concrete block waste heat circulation autoclave according to claim 5, characterized in that: Inside the waste heat utilization box (3), a baffle (12) is fixedly installed on the other side of the aeration disc (11), and the height of the baffle (12) is less than the height inside the waste heat utilization box (3).

7. The autoclave for waste heat circulation of steam-pressurized concrete blocks according to claim 5, characterized in that: An exhaust valve (13) is fixedly installed at the upper end of the waste heat utilization box (3) above the aeration plate (11), and a steam discharge pipe (14) is fixedly installed at the upper end of the autoclave body (1), and the steam discharge pipe (14) is connected to the lower end of the aeration plate (11).

8. The autoclave for waste heat circulation of steam-pressurized concrete blocks according to claim 1, characterized in that: A bracket (15) is fixedly installed at the lower end of the autoclave body (1), and a steam supply pipe (16) is fixedly installed at the steam discharge end of the steam boiler (2). The steam supply pipe (16) is connected to the steam inlet of the autoclave body (1).

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