A waste heat recovery device for a calcium oxide production process

Abstract

The application discloses a kind of waste heat recovery devices of calcium oxide production process, it is related to waste heat recovery technical field, including installation box, reaction box is equipped on installation box, reaction cavity is equipped in reaction box, the side of reaction box is equipped with gas inlet pipe, and gas inlet pipe is communicated with reaction cavity, heat preservation sleeve is equipped outside gas inlet pipe, driving element is equipped in gas inlet pipe, heating pipe element is equipped in installation box, heat conduction element is equipped in installation box with reaction box is communicated, the end of gas inlet pipe away from reaction box is communicated with heating pipe element;The high-temperature gas in the reaction box is transmitted into a plurality of heat absorption pipes by the gas inlet pipe, the heat in the reaction box is conducted by the heat conduction plate and the heat conduction box, and the plurality of heat absorption pipes are heated, the waste heat utilization efficiency is improved;Through rotating motor, transmission gear and rotating gear disc, first connecting pipe, a plurality of heat absorption pipes and second connecting pipe are driven to rotate, so that the plurality of heat absorption pipes are evenly heated in the heat conduction box, so that the water flow in the plurality of heat absorption pipes is absorbed heat efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of waste heat recovery, and particularly relates to a waste heat recovery device for a calcium oxide production process. BACKGROUND

[0002] Calcium oxide is an inorganic compound, commonly known as quicklime. The physical property is white powder on the surface, and the impure one is off-white, and the one containing impurities is light yellow or gray, and has hygroscopicity; the calcium oxide can be used as an additive of various chemical materials, and can be used for preparing lime mud slurry as a building material. In industrial production, the calcium oxide is usually prepared by the limestone calcination method, high temperature makes the limestone decompose to generate calcium oxide and carbon dioxide, and a large amount of flue gas is generated, if the high-temperature flue gas is directly discharged into the atmosphere, a large amount of heat energy will be wasted.

[0003] In the existing calcium oxide preheating recovery device such as the "waste heat recovery device for calcium oxide production" disclosed in the patent authorization number CN211451898U, the filter plate in the filter box can remove impurities in the waste gas, and the first heat exchange pipe is arranged, so that the air blown into the combustion chamber is preheated; the second heat exchange pipe and the water storage tank are arranged, so that the heat in the waste gas can heat the cold water, that is, only the heat of the generated high-temperature smoke dust can be recycled and utilized.

[0004] In the above application file, a large amount of heat is generated on the box during the production of calcium oxide, and the heat on the box needs to be utilized to avoid waste of waste heat; meanwhile, how to integrate the heat generated by the flue gas and the box and recycle and utilize them together is also a technical problem. Therefore, the application provides a waste heat recovery device for a calcium oxide production process. SUMMARY

[0005] The application aims to provide a waste heat recovery device for a calcium oxide production process.

[0006] The application solves the technical problems of:

[0007] (1) a large amount of heat is generated on the box during the production of calcium oxide, and the heat on the box needs to be utilized to avoid waste of waste heat;

[0008] (2) how to integrate the heat generated by the flue gas and the box and recycle and utilize them together is also a technical problem.

[0009] The application can be realized by the following technical scheme: a waste heat recovery device for a calcium oxide production process, comprising a mounting box, a reaction box provided on the mounting box, a reaction cavity provided in the reaction box, an air inlet pipe provided on one side of the reaction box and communicated with the reaction cavity, a heat preservation sleeve provided outside the air inlet pipe, a driving member provided in the air inlet pipe, a heated pipe provided in the mounting box, a heat conducting member provided in the mounting box and communicated with the reaction box, and the end of the air inlet pipe away from the reaction box being communicated with the heated pipe.

[0010] Further technical improvements of the application are that the heated pipe comprises a first connecting pipe communicated with the air inlet pipe, a second connecting pipe provided on the side of the mounting box away from the first connecting pipe, and a plurality of heat absorbing pipes provided between the first connecting pipe and the second connecting pipe and located in the heat conducting member. The water flow is dispersed by the plurality of heat absorbing pipes, so that the water flow in each heat absorbing pipe can contact the heat conducting member, thereby improving the heat absorption efficiency.

[0011] Further technical improvements of the application are that a plurality of heat absorbing fins are provided on the plurality of heat absorbing pipes in sequence and penetrate the plurality of heat absorbing pipes. The heat on the heat conducting member can be transmitted through the plurality of heat absorbing fins, thereby further improving the heat absorption efficiency of the heat absorbing pipes.

[0012] Further technical improvements of the application are that the heat conducting member comprises a heat conducting plate and a heat conducting box, the heat conducting box is provided outside the plurality of heat absorbing pipes, the heat conducting plate is installed on the heat conducting box, and one side of the heat conducting plate is located at the bottom of the reaction box. The heat conducting plate contacts and transmits heat with the reaction box, and the heat conducting box transmits the heat transmitted by the heat conducting plate and heats the plurality of heat absorbing pipes therein.

[0013] Further technical improvements of the application are that the first connecting pipe is rotatably connected in the air inlet pipe, a discharge pipe is provided on the mounting box, the second connecting pipe is rotatably connected in the discharge pipe, a sealing sleeve is provided on the rotatable connection of the first connecting pipe and the second connecting pipe, a rotating gear is provided outside the first connecting pipe, a rotating motor is provided on the reaction box, and the output shaft of the rotating motor is provided with a transmission gear meshing with the rotating gear. The rotating motor drives the transmission gear and the rotating gear to rotate, thereby driving the first connecting pipe, the plurality of heat absorbing pipes and the second connecting pipe to rotate, so that the plurality of heat absorbing pipes and the water flow therein are evenly heated, thereby improving the heat absorption efficiency of the water flow.

[0014] Further technical improvements of the application are that a water outlet valve is provided in the discharge pipe, and a water outlet fan is provided in the discharge pipe. The water outlet fan is used to improve the outflow speed of the heated steam in the discharge pipe and the plurality of heat absorbing pipes, thereby preventing the gas pressure in the plurality of heat absorbing pipes from being too high due to overheating.

[0015] Further technical improvements of the present application are that the reaction box is provided with a heat preservation layer around, the bottom of the reaction box is slidably installed with a heat preservation plate, and the heat preservation plate is above the heat conduction plate, and the reaction box is provided with an electric telescopic rod driving the heat preservation plate to slide horizontally.

[0016] Further technical improvements of the present application are that the driving member comprises a driving pump, the driving pump is installed in the air inlet pipe, and a barrier net is arranged in the air inlet pipe between the driving pump and the reaction box.

[0017] Further technical improvements of the present application are that the air inlet pipe is provided with a water inlet pipe, and a water inlet valve is arranged on the water inlet pipe. Water can be added to the plurality of heat absorption pipes and the water inlet pipe at any time through the water inlet valve, so as to ensure the normal absorption of heat by the plurality of heat absorption pipes.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] (1) The device transmits the high-temperature gas in the reaction box to the plurality of heat absorption pipes through the air inlet pipe, simultaneously conducts the heat in the reaction box through the heat conduction plate and the heat conduction box, and heats the plurality of heat absorption pipes, so as to integrate and fully utilize the waste heat, improve the waste heat utilization efficiency, and avoid the smoke dust from falling into the air inlet pipe through the barrier net;

[0020] (2) The first connecting pipe, the plurality of heat absorption pipes and the second connecting pipe are driven to rotate by the rotating motor, the transmission gear and the rotating gear disc, so that the plurality of heat absorption pipes are uniformly heated in the heat conduction box, the water flow in the plurality of heat absorption pipes is uniformly heated, the water flow heat absorption efficiency is improved, and the sealing property of the rotation connection of the first connecting pipe, the plurality of heat absorption pipes and the second connecting pipe is ensured by the sealing sleeve;

[0021] (3) The water in the air inlet pipe can be added at any time through the water inlet pipe, so as to ensure the heat absorption demand of the plurality of heat absorption pipes; and the water inlet valve can close the water inlet pipe to avoid the loss of high-temperature gas and heat from the water inlet pipe;

[0022] (4) The heat in the reaction box is preserved by the heat preservation layer and the heat preservation plate, the production reaction process of calcium oxide is ensured, and the heat loss is avoided; when the raw materials in the reaction box are reacted, the heat preservation plate is driven to slide horizontally by the electric telescopic rod, so that the heat conduction plate is in contact with the reaction box to transfer the waste heat and ensure the heat transfer and absorption. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to facilitate the understanding of those skilled in the art, the present application will be further described below with reference to the drawings.

[0024] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the multiple heat-absorbing tubes of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the insulation board of the present invention;

[0028] Figure 5 This is a partial enlarged view of point A in the present invention.

[0029] In the diagram: 1. Mounting box; 2. Reaction box; 3. Air inlet pipe; 4. First connecting pipe; 5. Second connecting pipe; 6. Heat absorption pipe; 7. Heat absorption sheet; 8. Heat conduction plate; 9. Heat conduction box; 10. Discharge pipe; 11. Sealing sleeve; 12. Rotating gear disc; 13. Transmission gear; 14. Water outlet valve; 15. Water outlet fan; 16. Insulation layer; 17. Insulation board; 18. Electric telescopic rod; 19. Drive pump; 20. Barrier net; 21. Water inlet pipe; 22. Water inlet valve; 23. Rotating motor. Detailed Implementation

[0030] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0031] Please see Figures 1-5 As shown, this invention proposes a waste heat recovery device for a calcium oxide production process, including an installation box 1, a reaction box 2 mounted on the installation box 1, a reaction chamber inside the reaction box 2, an inlet pipe 3 on one side of the reaction box 2 connected to the reaction chamber, an insulation sleeve outside the inlet pipe 3, a driving component inside the inlet pipe 3, a heated pipe inside the installation box 1, and a heat-conducting component connected to the reaction box 2 inside the installation box 1. The end of the inlet pipe 3 away from the reaction box 2 is connected to the heated pipe. The driving component moves carbon dioxide and other gases in the reaction box 2 along the inlet pipe 3, causing the carbon dioxide and other gases to flow into the heated pipe, allowing the heated pipe to transfer the carbon dioxide and other gases. Simultaneously, the heat-conducting component conducts heat from the reaction box 2, and the heat from the reaction box 2 contacts the heated pipe through the heat-conducting component, allowing the heat to be transferred to the heated pipe, heating the moisture inside the heated pipe and storing the waste heat. The insulation sleeve keeps the heat outside the inlet pipe 3 warm.

[0032] The heat-receiving pipe fitting includes a first connecting pipe 4, which is connected to the air inlet pipe 3. A second connecting pipe 5 is provided on the side of the mounting box 1 away from the first connecting pipe 4. Multiple heat-absorbing pipes 6 are arranged between the first connecting pipe 4 and the second connecting pipe 5, and the multiple heat-absorbing pipes 6 are located inside the heat-conducting component. When water, carbon dioxide, and other gases flow through the air inlet pipe 3 and the first connecting pipe 4 into the multiple heat-absorbing pipes 6, the multiple heat-absorbing pipes 6 absorb the heat transferred on the heat-conducting component, so that the water, carbon dioxide, and other gases in the multiple heat-absorbing pipes 6 absorb and transfer heat. The water that has absorbed heat is then discharged and reused through the second connecting pipe 5. At the same time, the multiple heat-absorbing pipes 6 can disperse the water flow, improve the water flow's heat absorption efficiency, and thus improve the heat absorption effect.

[0033] The driving component includes a drive pump 19, which is installed inside the air inlet pipe 3. A baffle screen 20 is installed inside the air inlet pipe 3, positioned between the drive pump 19 and the reaction chamber 2. The drive pump 19 draws carbon dioxide and other gases from the reaction chamber 2 into multiple heat absorption tubes 6 to utilize the heat from the carbon dioxide and other gases. Simultaneously, the baffle screen 20 isolates the air inlet pipe 3 from the reaction chamber 2, preventing smoke and dust from falling into the air inlet pipe 3.

[0034] Multiple heat-absorbing plates 7 are sequentially arranged on multiple heat-absorbing tubes 6, and the multiple heat-absorbing plates 7 penetrate through multiple heat-absorbing tubes 6. The heat in the heat-conducting element is transferred to the multiple heat-absorbing tubes 6 through the multiple heat-absorbing plates 7, thereby further improving the heat absorption effect of the water flow.

[0035] The heat-conducting components include a heat-conducting plate 8 and a heat-conducting box 9. The heat-conducting box 9 is located outside the multiple heat-absorbing pipes 6, and the heat-conducting plate 8 is installed on the heat-conducting box 9, with one side of the heat-conducting plate 8 located at the bottom of the reaction chamber 2. The heat-conducting plate 8 absorbs and transfers the residual heat after the reaction in the reaction chamber 2, so that the heat is used to heat the multiple heat-absorbing pipes 6 through the heat-conducting plate 8 and the heat-conducting box 9, thereby completing the recovery and utilization of residual heat.

[0036] The first connecting pipe 4 is rotatably connected inside the air inlet pipe 3. The mounting box 1 is equipped with an outlet pipe 10. The second connecting pipe 5 is rotatably connected inside the outlet pipe 10. Sealing sleeves 11 are fitted at the rotatable connections of the first connecting pipe 4 and the second connecting pipe 5. A rotating gear disc 12 is fitted over the first connecting pipe 4. A rotating motor 23 is mounted on the reaction box 2. The output shaft of the rotating motor 23 is equipped with a transmission gear 13 that meshes with the rotating gear disc 12. The rotating motor 23 drives the transmission gear 13 and the rotating gear disc 12 to rotate, thereby driving the first connecting pipe 4, multiple heat-absorbing pipes 6, and the second connecting pipe 5 to rotate. This ensures that the multiple heat-absorbing pipes 6 are evenly heated within the heat-conducting box 9, and that the water flow within the heat-absorbing pipes 6 can also contact the evenly heated heat-absorbing pipes 6, thus preventing uneven heating of the water flow within the multiple heat-absorbing pipes 6.

[0037] The water outlet valve 14 is arranged in the discharge pipe 10, and the water outlet fan 15 is arranged in the discharge pipe 10. The water outlet valve 14 is used to control the opening and closing of the discharge pipe 10, so as to control the outflow of hot water and steam in the plurality of heat absorption pipes 6. Meanwhile, the water outlet fan 15 can accelerate the outflow speed of the hot water and steam in the discharge pipe 10, so as to avoid the problem that the water flow is overheated too fast to cause the excessive air pressure in the plurality of heat absorption pipes 6.

[0038] The heat preservation layer 16 is arranged around the reaction box 2, the heat preservation plate 17 is slidably arranged at the bottom of the reaction box 2 and located above the heat conduction plate 8, and the electric telescopic rod 18 is arranged on the reaction box 2 and used to drive the heat preservation plate 17 to slide horizontally. The heat preservation layer 16 and the heat preservation plate 17 are used to preserve the heat in the reaction box 2, so as to ensure the reaction process. When the raw materials in the reaction box 2 are completely reacted, the heat preservation plate 17 is driven by the electric telescopic rod 18 to slide horizontally, so as to move out the heat preservation plate 17, so that the heat conduction plate 8 is in contact with the reaction box 2, and the heat conduction plate 8 is used to transfer the heat in the reaction box 2.

[0039] The water inlet pipe 21 is arranged on the air inlet pipe 3, and the water inlet valve 22 is arranged on the water inlet pipe 21. The water inlet pipe 21 is used to conveniently add heat absorption water into the air inlet pipe 3, so as to conveniently absorb the heat. Meanwhile, the water inlet valve 22 is used to close the water inlet pipe 21, so as to avoid the heat flowing out from the water inlet pipe 21.

[0040] In use, the calcium oxide is reacted in the reaction cavity of the reaction box 2 to be prepared, the carbon dioxide and other gases in the reaction box 2 are sucked into the plurality of heat absorption pipes 6 by the driving pump 19 when the calcium oxide is completely reacted, and the heat absorption water is conveniently added into the air inlet pipe 3 through the water inlet pipe 21. Meanwhile, the heat preservation plate 17 is driven by the electric telescopic rod 18 to slide horizontally, so as to move out the heat preservation plate 17, so that the heat conduction plate 8 is in contact with the reaction box 2. The heat in the reaction box 2 after reaction is absorbed and transferred by the heat conduction plate 8 and the heat conduction box 9, so that the heat is transferred from the heat conduction member into the plurality of heat absorption pipes 6 through the plurality of heat absorption fins 7, the water in the plurality of heat absorption pipes 6 is heated, the heating effect is improved, the transmission gear 13 and the rotating gear disc 12 are driven by the rotating motor 23 to rotate, so as to drive the first connecting pipe 4, the plurality of heat absorption pipes 6 and the second connecting pipe 5 to rotate, so that the plurality of heat absorption pipes 6 are uniformly heated in the heat conduction box 9. Under the driving of the water outlet fan 15, the hot water and steam in the plurality of heat absorption pipes 6 are accelerated to flow out through the discharge pipe 10, so as to avoid the excessive air pressure in the plurality of heat absorption pipes 6.

[0041] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A waste heat recovery device for a calcium oxide production process, comprising a mounting box (1), wherein a reaction box (2) is mounted on the mounting box (1), characterized in that, The reaction chamber (2) is provided with a reaction cavity. An air inlet pipe (3) is provided on one side of the reaction chamber (2) and is connected to the reaction cavity. An insulation sleeve is provided outside the air inlet pipe (3). A driving component is provided inside the air inlet pipe (3). A heated pipe is provided inside the mounting box (1). A heat-conducting component is provided inside the mounting box (1) and is connected to the reaction chamber (2). The end of the air inlet pipe (3) away from the reaction chamber (2) is connected to the heated pipe. The heated pipe includes a first connecting pipe (4), which is connected to the air inlet pipe (3). A second connecting pipe (5) is provided on the side of the mounting box (1) away from the first connecting pipe (4). A plurality of heat-absorbing pipes (6) are provided between the first connecting pipe (4) and the second connecting pipe (5), and the plurality of heat-absorbing pipes (6) are located inside the heat-conducting component. The heat-conducting component includes a heat-conducting plate (8) and a heat-conducting box (9). The heat-conducting box (9) is located outside a plurality of heat-absorbing tubes (6). The heat-conducting plate (8) is installed on the heat-conducting box (9), and one side of the heat-conducting plate (8) is located at the bottom of the reaction box (2). The first connecting pipe (4) is rotatably connected to the air inlet pipe (3). The mounting box (1) is provided with an outlet pipe (10). The second connecting pipe (5) is rotatably connected to the outlet pipe (10). The rotatable connection points of the first connecting pipe (4) and the second connecting pipe (5) are both fitted with sealing sleeves (11). The first connecting pipe (4) is fitted with a rotating gear disc (12). The reaction box (2) is provided with a rotating motor (23). The output shaft of the rotating motor (23) is provided with a transmission gear (13) that meshes with the rotating gear disc (12). The reaction chamber (2) is provided with a heat insulation layer (16) around its perimeter. A heat insulation plate (17) is slidably installed at the bottom of the reaction chamber (2) and the heat insulation plate (17) is located above the heat conduction plate (8). An electric telescopic rod (18) is provided on the reaction chamber (2) to drive the heat insulation plate (17) to slide horizontally.

2. The waste heat recovery device for a calcium oxide production process according to claim 1, characterized in that, Multiple heat-absorbing plates (7) are sequentially arranged on the multiple heat-absorbing tubes (6), and the multiple heat-absorbing plates (7) penetrate the multiple heat-absorbing tubes (6).

3. The waste heat recovery device for a calcium oxide production process according to claim 1, characterized in that, The discharge pipe (10) is equipped with a water outlet valve (14) and a water outlet fan (15).

4. The waste heat recovery device for a calcium oxide production process according to claim 1, characterized in that, The driving component includes a driving pump (19), which is installed in the air inlet pipe (3). The air inlet pipe (3) is provided with a barrier net (20), which is located between the driving pump (19) and the reaction chamber (2).

5. The waste heat recovery device for a calcium oxide production process according to claim 1, characterized in that, The air inlet pipe (3) is provided with a water inlet pipe (21), and the water inlet pipe (21) is provided with a water inlet valve (22).

Images