Efficient waste heat recovery system for calcium carbide sensible heat

Abstract

The invention relates to the technical field of calcium carbide sensible heat recovery, in particular to a calcium carbide sensible heat waste heat efficient recovery system which comprises a calcium carbide pot, a first oil pump, an oil storage tank, a heat collection system and a steam generation system. Heat conduction oil exchanges heat with water in the heat collection system to generate steam, and the heat conduction oil obtained after heat exchange with the water enters the heat collection system again from an outlet of the steam generation system so as to complete circulation; according to the waste heat efficient recovery system for calcium carbide sensible heat, the heat collection cover is arranged above the calcium carbide pot, meanwhile, the hollow cavity is formed in the liquid collection cover, and when heat conduction oil flows through the hollow cavity, the flow direction of the heat conduction oil is changed through the Archimedes spiral flow guide plate, so that the heat conduction oil is more evenly distributed, and the heat conduction oil is more uniform; meanwhile, radiation heat transfer of the calcium carbide enables heat transfer of heat-conducting oil to be more sufficient through a heat collecting cover, and meanwhile the effect of efficiently recycling waste heat of sensible heat of the calcium carbide is further achieved in cooperation with a steam production system.

Description

Technical Field

[0001] The invention relates to the technical field of calcium carbide sensible heat recovery, and in particular to a system for efficiently recovering waste heat from calcium carbide sensible heat. Background Art

[0002] The temperature of the newly-made thermoelectric carbide is as high as about 2000℃, and there is no effective equipment to recover this waste heat. At present, the treatment method of calcium carbide production enterprises is to directly place it in the natural environment to cool it to about 100℃, and the temperature of the calcium carbide loses 1700-1800℃. This not only causes a large amount of heat loss of the calcium carbide, but also causes serious environmental pollution. For this reason, we propose a high-efficiency waste heat recovery system for calcium carbide sensible heat. Summary of the invention

[0003] The purpose of the present invention is to provide a system for efficiently recovering waste heat from the sensible heat of calcium carbide to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a calcium carbide sensible heat waste heat high-efficiency recovery system, comprising a calcium carbide pot, a first oil pump, an oil storage tank, a heat collection system and a steam production system, wherein the first oil pump heats the heat transfer oil in the oil storage tank through the heat collection system and then passes it into the steam production system, so that the heat transfer oil exchanges heat with water in the heat collection system to generate steam, and the heat transfer oil obtained after heat exchange with water re-enters the heat collection system from the outlet of the steam production system to complete the cycle; The heat collection system comprises a heat collection cover arranged above the calcium stone pot, the outer surface of the heat collection cover is coated with a radiation absorption coating, a hollow cavity is arranged inside the heat collection cover, and a flow guiding mechanism for guiding the heat transfer oil is arranged at the hollow cavity, the output end of the first oil pump is connected to an oil delivery pipe, and one end of the oil delivery pipe is connected to the hollow cavity; The top of the heat collecting cover is connected with an oil outlet pipe, and the bottom of the heat collecting cover is connected with an oil inlet pipe. One end of the oil outlet pipe is connected with the hollow cavity, and the other end of the oil outlet pipe is connected with the steam production system.

[0005] Wherein, the guide mechanism includes a guide plate, and the guide plate is an Archimedean spiral guide plate.

[0006] The steam production system is composed of a steam generator, a water supply pump and a water storage tank. One end of the oil outlet pipe is connected to the steam generator, and the steam generator outlet is connected to the oil storage tank.

[0007] Wherein, a heat mixing mechanism is provided inside the heat collecting cover, and the heat mixing mechanism enables the heat transfer oil flowing through the hollow cavity to fully exchange heat.

[0008] Wherein, the heat mixing mechanism comprises a flow guide pipe, a regulating pipe, a heat exchange contact piece and a regulating piece, wherein a plurality of flow guide pipes are provided, one end of the plurality of flow guide pipes is connected to the hollow cavity, and the other end of the flow guide pipe is connected to the regulating pipe, and the heat exchange contact piece is arranged between the flow guide pipe and the regulating pipe; The regulating member is installed between the plurality of regulating tubes, and is used to regulate the heat exchange contact members in the plurality of flow guide tubes; A plurality of temperature sensors are installed on the heat collecting cover, and a heat mixing mechanism is provided so that the heat transfer oil flowing through a plurality of nodes of the guide plate can ensure a certain amount of heat.

[0009] Among them, the heat exchange contact part includes a movable piston, a movable rod, an adjusting rod, a first piston and a second piston. The movable piston is cooperatively connected to the guide pipe, one end of the movable rod is fixedly connected to the movable piston, and the other end of the movable rod is located at the adjusting pipe, the movable rod slides through the adjusting pipe, and the end of the movable rod located inside the adjusting pipe is provided with a guide groove, and the adjusting rod slides through the guide groove, the first piston is fixedly installed at the top end of the adjusting rod, and the second piston is fixedly installed at the bottom end of the adjusting rod, and the first piston and the second piston are both cooperatively connected to the adjusting pipe.

[0010] The top end of the adjusting rod is an inclined end, and the position of the guide groove corresponding to the inclined end is arranged in an inclined shape. Through the provided heat exchange contact piece, the heat transfer oil in the hollow cavity can be stably moved.

[0011] The regulating member includes a first injection tube, a first connecting tube, a first U-shaped tube, a second injection tube, a second connecting tube and a second U-shaped tube, a plurality of first injection tubes are provided, two ends of the plurality of first injection tubes are respectively connected to the top ends of the plurality of regulating tubes, the first connecting tube is connected to the plurality of first injection tubes, and one end of the first injection tube is connected to the first U-shaped tube; There are multiple second injection pipes, one end of each of the multiple second injection pipes is connected to the bottom ends of multiple adjustment pipes, one end of each of the multiple second injection pipes is connected to the second connecting pipe, and one end of the second connecting pipe is connected to the second U-shaped pipe; The first U-shaped tube and the second U-shaped tube are both connected to a second oil pump, and an input end of the second oil pump is connected to an oil storage tank; The other ends of the first U-shaped tube and the second U-shaped tube are connected to a liquid collecting shell, and the liquid collecting shell is connected to a third oil pump. The liquid collecting shell is connected to a liquid guide tube, and one end of the liquid guide tube is connected to the oil outlet pipe. The liquid guide tube is provided with a solenoid valve; Both ends of the first U-shaped tube and the second U-shaped tube are provided with solenoid valves, and the heat exchange contact member is regulated by the regulating member.

[0012] Wherein, the top end of the oil outlet pipe is connected with a mixing pipe, the mixing pipe includes an inlet end and an outlet end, and the outlet end is connected with a steam generator; A heat transfer oil mixing element is provided at the inlet end.

[0013] Wherein, the heat transfer oil mixing element includes a first mixing plate and a second mixing plate, the first mixing plate and the second mixing plate are both fixedly installed inside the entrance end, the first mixing plate is located below the second mixing plate, the first mixing plate is surrounded by a plurality of outflow holes, and the second mixing plate is surrounded by a plurality of through holes. Through the heat transfer oil mixing element, the heat transfer oil flowing out of the mixing tube can be fully mixed again to ensure the uniformity of the heat of the flowing heat transfer oil.

[0014] The present invention has at least the following beneficial effects: The present invention provides a heat collecting cover above the calcium carbide pot and a hollow cavity at the liquid collecting cover. When the heat transfer oil flows through the hollow cavity, the Archimedean spiral guide plate changes the flow direction of the heat transfer oil, making the heat transfer oil more evenly distributed. The heat transfer oil flows along the hollow cavity at a certain speed. At the same time, the radiation heat transfer of the calcium carbide passes through the heat collecting cover, making the heat exchange of the heat transfer oil more sufficient. At the same time, the steam production system is cooperated to further realize the effect of efficiently recovering the waste heat of the sensible heat of the calcium carbide. The present invention can detect the temperature of multiple points on the heat collecting cover in real time by means of a temperature sensor provided on the heat collecting cover. When the temperature of the corresponding point on the heat collecting cover reaches a set value, the heat transfer oil between the guide plates is disturbed through the heat exchange contact piece and the adjustment piece, thereby further reducing the flow rate of the heat transfer oil, ensuring that the heat transfer oil is fully exchanged, and further ensuring the outflow temperature of the heat transfer oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the heat collecting cover structure of the present invention; Figure 3 It is a schematic diagram of the side structure of the heat collecting cover of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the heat collecting cover of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the heat collecting cover of the present invention from a side view; Figure 6 It is a schematic diagram of the cross-sectional structure of the mixing tube of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the guide plate of the present invention; Figure 8 It is a schematic diagram of the structure of the mobile block of the present invention; Fig. 9This is a schematic diagram of the structure of the regulating tube of the present invention; Fig.10 It is a schematic diagram of the structure of the first U-shaped tube and the second U-shaped tube of the present invention; Fig.11 For the present invention Figure 7 A schematic diagram of the enlarged structure of the middle A area; Fig.12 For the present invention Fig.10 Schematic diagram of the enlarged structure of area B in the middle.

[0016] In the figure: 1-electric stone pot; 2-first oil pump; 3-oil storage tank; 4-heat collection system; 5-steam production system; 51-steam generator; 52-water pump; 53-water storage tank; 6-heat collection cover; 61-hollow cavity; 62-oil outlet pipe; 63-oil inlet pipe; 7-flow guide mechanism; 71-flow guide plate; 8-heat mixing mechanism; 81-flow guide pipe; 82-adjusting pipe; 83-heat exchange contact piece; 831-moving piston; 832-moving rod; 8321-guide groove; 833-adjusting rod; 8331-inclined end; 834-first piston ;835-second piston;84-adjusting member;841-first liquid injection pipe;842-first connecting pipe;843-first U-shaped pipe;844-second liquid injection pipe;845-second connecting pipe;846-second U-shaped pipe;847-second oil pump;848-liquid collecting shell;849-third oil pump;8491-liquid guide pipe;85-temperature sensor;9-mixing tube;91-inlet end;92-output end;93-heat transfer oil mixing element;94-first mixing plate;941-outflow hole;95-second mixing plate;951-through hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0018] See also Figure 1 , a calcium carbide sensible heat waste heat efficient recovery system, comprising a calcium carbide pot 1, a first oil pump 2, an oil storage tank 3, a heat collection system 4 and a steam production system 5, the first oil pump 2 has a power of 1.5 kW, a head of 40 m, a flow rate of 40 m3 / h, and can withstand 300 ℃ heat transfer oil, the first oil pump 2 heats the heat transfer oil in the oil storage tank 3 through the heat collection system 4 and then passes it into the steam production system 5, so that the heat transfer oil exchanges heat with the water in the heat collection system 4 to generate steam, and the heat transfer oil obtained after heat exchange with the water re-enters the heat collection system 4 from the outlet of the steam production system 5 to complete the cycle; The heat collection system 4 includes a heat collection cover 6 arranged above the calcium carbide pot 1, the outer surface of the heat collection cover 6 is coated with a radiation absorption coating, and a hollow cavity 61 is provided inside the heat collection cover 6; The calcium carbide is naturally cooled in the calcium carbide pot 1, and the heat of the calcium carbide is irradiated to the radiation absorbing coating on the outer surface of the heat collecting cover 6. The heat collecting cover 6 absorbs the heat on the coating by radiation, and then transfers the heat to the inner surface of the heat collecting cover 6 by heat conduction. The heat is transferred to the heat conducting oil by convection heat exchange with the heat conducting oil, and finally reacts with water in the steam generator 51 to generate steam to realize the waste heat utilization of the calcium carbide. The circulating working fluid of the system is L-QB300 heat conducting oil, and its thermodynamic parameters are provided by the manufacturer, with a temperature resistance of 350°C. The radiation coating on the lower surface of the heat collecting cover 6 is a high-temperature far-infrared radiation energy-saving coating. Under high temperature conditions, heat is mainly transferred in the form of radiation. After the surface of the heated object is coated with a nano-scale radiation coating, the ability of the object to absorb and emit heat can be significantly enhanced. Under the same heating conditions, due to the improvement of heat transfer capacity, the energy utilization efficiency will be significantly improved, thereby achieving the goal of energy saving; The steam production system 5 is composed of a steam generator 51, a water supply pump 52 and a water storage tank 53. One end of the oil outlet pipe 62 is connected to the steam generator 51, and the outlet of the steam generator 51 is connected to the oil storage tank 3; See also Figures 2 to 6 , and a guiding mechanism 7 for guiding the heat transfer oil is provided at the hollow cavity 61, the output end 92 of the first oil pump 2 is connected to an oil delivery pipe, and one end of the oil delivery pipe is connected to the hollow cavity 61, and the heat transfer oil is heated by the heat collection system 4 and then passed into the steam generator 51, and the heat transfer oil exchanges heat with water to generate steam. After the heat exchange with water, the heat transfer oil re-enters the heat collection system 4 from the outlet of the steam generator 51 to complete the cycle; The top of the heat collecting cover 6 is connected to an oil outlet pipe 62 , and the bottom of the heat collecting cover 6 is connected to an oil inlet pipe 63 . One end of the oil outlet pipe 62 is connected to the hollow cavity 61 , and the other end of the oil outlet pipe 62 is connected to the steam production system 5 .

[0019] The guide mechanism 7 includes a guide plate 71, which is an Archimedes spiral guide plate 71. The heat collecting cover 6 adopts an elliptical head form, and an Archimedes spiral guide plate 71 is adopted inside. The heat transfer oil flows in from the bottom and out from the top. The heat transfer oil flows along the trajectory direction of the guide plate 71, which increases the stability of the equipment. The guide plate 71 changes the flow direction of the heat transfer oil, making the heat transfer oil more evenly distributed.

[0020] See also Figures 8 to 12, a heat mixing mechanism 8 is provided inside the heat collecting cover 6. In the present invention, the heat mixing mechanism 8 is preferably provided with one group, and in actual use, multiple groups can be provided, so that the heat transfer oil can be fully blocked, and further ensure that the heat transfer oil can fully exchange heat during the process of flowing around along the Archimedean spiral guide plate 71, and the heat mixing mechanism 8 makes the heat transfer oil flowing through the hollow cavity 61 fully exchange heat. The heat mixing mechanism 8 includes a guide pipe 81, an adjusting pipe 82, a heat exchange contact piece 83 and an adjusting piece 84. A plurality of guide pipes 81 are provided, one end of the plurality of guide pipes 81 is connected to the hollow cavity 61, and the other end of the guide pipe 81 is connected to the adjusting pipe 82. The heat exchange contact piece 83 is arranged between the guide pipe 81 and the adjusting pipe 82. At the same time, in the present invention, the plurality of guide pipes 81 are all located on the inner side of the heat collecting cover 6; The regulating member 84 is installed between the plurality of regulating tubes 82 , and is used to regulate the heat exchange contact members 83 in the plurality of flow guide tubes 81 ; A plurality of temperature sensors 85 are installed on the heat collecting cover 6 and are located on the outer surface of the heat collecting cover 6 for detecting the temperature of multiple points on the outer surface of the heat collecting cover 6 , and thus the temperature of the heat transfer oil at the detection point close to the heat collecting cover 6 can be detected accordingly.

[0021] See also Figures 9 and 10 The heat exchange contact member 83 includes a movable piston 831, a movable rod 832, an adjusting rod 833, a first piston 834 and a second piston 835. The movable piston 831 is connected in cooperation with the guide tube 81. One end of the movable rod 832 is fixedly connected to the movable piston 831, and the other end of the movable rod 832 is located at the adjusting tube 82. The movable rod 832 slides through the adjusting tube 82. A guide groove 8321 is provided at one end of the movable rod 832 located inside the adjusting tube 82, and the adjusting rod 833 slides through the guide groove 8321. The first piston 834 is fixedly installed at the top of the adjusting rod 833, and the second piston 835 is fixedly installed at the bottom of the adjusting rod 833. The first piston 834 and the second piston 835 are both connected in cooperation with the adjusting tube 82.

[0022] The top end of the adjusting rod 833 is an inclined end 8331 , and the position of the guiding groove 8321 corresponding to the inclined end 8331 is arranged in an inclined shape.

[0023] The regulating member 84 includes a first injection tube 841, a first connecting tube 842, a first U-shaped tube 843, a second injection tube 844, a second connecting tube 845 and a second U-shaped tube 846. A plurality of first injection tubes 841 are provided, and both ends of the plurality of first injection tubes 841 are respectively connected to the top ends of the plurality of regulating tubes 82, the first connecting tube 842 is connected to the plurality of first injection tubes 841, and one end of the first injection tube 841 is connected to the first U-shaped tube 843; There are multiple second injection pipes 844, one end of each of the multiple second injection pipes 844 is connected to the bottom ends of the multiple adjustment pipes 82, and one end of each of the multiple second injection pipes 844 is connected to the second connecting pipe 845, and one end of the second connecting pipe 845 is connected to the second U-shaped pipe 846; The first U-shaped tube 843 and the second U-shaped tube 846 are both connected to a second oil pump 847, and the input end of the second oil pump 847 is connected to the oil storage tank 3; The other ends of the first U-shaped tube 843 and the second U-shaped tube 846 are connected to a liquid collecting shell 848, and the liquid collecting shell 848 is connected to a third oil pump 849. The liquid collecting shell 848 is connected to a liquid guide tube 8491, and one end of the liquid guide tube 8491 is connected to the oil outlet pipe 62. A solenoid valve is provided on the liquid guide tube 8491. Both ends of the first U-shaped tube 843 and the second U-shaped tube 846 are provided with solenoid valves, which are used to open and close both ends of the first U-shaped tube 843 and the second U-shaped tube 846; Specific implementation process: Under normal conditions, the outer surfaces of the multiple movable pistons 831 located at the multiple flow guide tubes 81 are on the same arc surface as the inner side of the hollow cavity 61, thereby ensuring that the heat transfer oil flows along the inside of the hollow cavity 61, and in this state, the first piston 834 at the top of the adjusting rod 833 contacts the top of the inner side of the adjusting tube 82, and the second piston 835 at the bottom of the adjusting rod 833 introduces the heat transfer oil to the second U-shaped tube 846 by the second oil pump 847, and through the second U-shaped tube 846 and the second connecting tube 845 and the multiple second injection tubes 844, the heat transfer oil enters the bottom of the multiple adjusting tubes 82, that is, the heat transfer oil enters the cavity formed between the bottom of the adjusting tube 82 and the second piston 835, thereby ensuring the stability of the movable piston 831 at the flow guide tube 81; When the multiple temperature sensors 85 detect that the temperature of the corresponding point at the heat collecting cover 6 has not reached the set value, then at this time, the second oil pump 847 at the first U-shaped tube 843 is operated, and then the heat transfer oil is introduced into the top of the regulating tube 82 through one end of the first U-shaped tube 843, the first connecting tube 842 and the multiple first injection tubes 841. At the same time, the third oil pump 849 is operated, and the solenoid valve located at the second U-shaped tube 846 and close to the third oil pump 849 is opened, then the heat transfer oil after heat exchange flows out from the bottom of the multiple regulating tubes 82, and flows through the second injection tube 844, the second connecting tube 845 and the second U-shaped tube 846, and finally merges into the oil outlet pipe 62 through the guiding tube 8491; During this process, the first piston 834 drives the adjusting rod 833 to move downward along the inside of the adjusting tube 82. When the adjusting rod 833 moves downward, the inclined end 8331 further pushes the moving rod 832 to drive the moving piston 831 along the guide tube 81 to enter the hollow cavity 61. At this time, the multiple protruding moving pistons 831 can block and disturb the flow of the heat transfer oil, thereby reducing the flow rate of the heat transfer oil. On the other hand, the temperature on the moving piston 831 heats the heat transfer oil flowing therethrough, thereby further ensuring the rapid heat exchange of the heat transfer oil flowing therethrough. After the set temperature is reached, the second oil pump 847 at the second U-shaped tube 846 starts to operate, and then the heat transfer oil is introduced into the bottom end of the regulating tube 82 through one end of the second U-shaped tube 846, the second connecting tube 845 and multiple second injection tubes 844. At the same time, the third oil pump 849 starts to operate, and the solenoid valve located at the first U-shaped tube 843 and close to the third oil pump 849 is opened. The heat transfer oil after heat exchange flows out from the top of multiple regulating tubes 82, flows through the first injection tube 841, the first connecting tube 842 and the first U-shaped tube 843, and finally flows into the oil outlet pipe 62 through the liquid guide tube 8491. Embodiment 2

[0024] See also Figures 5 and 6 , Embodiment 2 is a further supplementary explanation of Embodiment 1, specifically: the top of the oil outlet pipe 62 is connected to a mixing pipe 9, the mixing pipe 9 includes an inlet end 91 and an outlet end 92, and the outlet end 92 is connected to the steam generator 51; A heat transfer oil mixing element 93 is provided at the inlet end 91. The heat transfer oil mixing element 93 includes a first mixing plate 94 and a second mixing plate 95. The first mixing plate 94 and the second mixing plate 95 are both fixedly installed inside the inlet end 91. The first mixing plate 94 is located below the second mixing plate 95. A plurality of outflow holes 941 are arranged around the first mixing plate 94, and a plurality of through holes 951 are arranged around the second mixing plate 95. Then, when the heat transfer oil flows through the mixing tube 9, the heat transfer oil is mixed again by the first mixing plate 94 and the second mixing plate 95, and the mixed heat transfer oil is pressurized again through the output end 92 of the mixing tube 9, so that the heat transfer oil can fully enter the steam generator 51.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for efficiently recovering waste heat from calcium carbide sensible heat, characterized in that: The invention comprises an electric stone pot (1), a first oil pump (2), an oil storage tank (3), a heat collection system (4) and a steam production system (5), wherein the first oil pump (2) heats the heat transfer oil in the oil storage tank (3) through the heat collection system (4) and then passes the heat transfer oil into the steam production system (5), so that the heat transfer oil exchanges heat with water in the heat collection system (4) to generate steam, and the heat transfer oil obtained after the heat exchange with the water re-enters the heat collection system (4) from the outlet of the steam production system (5) to complete the cycle; The heat collection system (4) comprises a heat collection cover (6) arranged above the calcium carbide pot (1), the outer surface of the heat collection cover (6) being coated with a radiation absorption coating, a hollow cavity (61) being provided inside the heat collection cover (6), and a flow guiding mechanism (7) for guiding the heat transfer oil being provided at the hollow cavity (61), the output end (92) of the first oil pump (2) being connected to an oil delivery pipe, and one end of the oil delivery pipe being in communication with the hollow cavity (61); The top of the heat collecting cover (6) is connected to an oil outlet pipe (62), and the bottom of the heat collecting cover (6) is connected to an oil inlet pipe (63); one end of the oil outlet pipe (62) is connected to the hollow cavity (61), and the other end of the oil outlet pipe (62) is connected to the steam production system (5).

2. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 1 is characterized in that: The flow guide mechanism (7) comprises a flow guide plate (71), and the flow guide plate (71) is an Archimedean spiral flow guide plate (71).

3. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 1 is characterized in that: The steam production system (5) is composed of a steam generator (51), a water supply pump (52) and a water storage tank (53); one end of the oil outlet pipe (62) is connected to the steam generator (51), and the outlet of the steam generator (51) is in communication with the oil storage tank (3).

4. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 1 is characterized in that: A heat mixing mechanism (8) is provided inside the heat collecting cover (6), and the heat mixing mechanism (8) enables the heat transfer oil flowing through the hollow cavity (61) to fully exchange heat.

5. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 4 is characterized in that: The heat mixing mechanism (8) comprises a flow guide tube (81), a regulating tube (82), a heat exchange contact piece (83) and a regulating piece (84); a plurality of the flow guide tubes (81) are provided, one end of the plurality of flow guide tubes (81) is communicated with the hollow cavity (61), the other end of the flow guide tube (81) is communicated with the regulating tube (82), and the heat exchange contact piece (83) is arranged between the flow guide tube (81) and the regulating tube (82); The regulating member (84) is installed between the plurality of regulating tubes (82), and is used to regulate the heat exchange contact members (83) in the plurality of flow guide tubes (81) through the regulating member (84); A plurality of temperature sensors (85) are installed on the heat collecting cover (6).

6. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 5 is characterized in that: The heat exchange contact member (83) comprises a movable piston (831), a movable rod (832), an adjusting rod (833), a first piston (834) and a second piston (835); the movable piston (831) is connected in cooperation with the guide tube (81); one end of the movable rod (832) is fixedly connected to the movable piston (831), and the other end of the movable rod (832) is located at the adjusting tube (82); the movable rod (832) slides through the adjusting tube (82); one end of the movable rod (832) located inside the adjusting tube (82) is provided with a guide groove (8321), and the adjusting rod (833) slides through the guide groove (8321); the first piston (834) is fixedly mounted on the top end of the adjusting rod (833), and the second piston (835) is fixedly mounted on the bottom end of the adjusting rod (833); the first piston (834) and the second piston (835) are both connected in cooperation with the adjusting tube (82).

7. A system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 6, characterized in that: The top end of the adjusting rod (833) is an inclined end (8331), and the position of the guide groove (8321) corresponding to the inclined end (8331) is arranged in an inclined shape.

8. The system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 5 is characterized in that: The regulating member (84) comprises a first injection tube (841), a first connecting tube (842), a first U-shaped tube (843), a second injection tube (844), a second connecting tube (845) and a second U-shaped tube (846); a plurality of first injection tubes (841) are provided, and both ends of the plurality of first injection tubes (841) are respectively connected to the top ends of the plurality of regulating tubes (82); the first connecting tube (842) is connected to the plurality of first injection tubes (841), and one end of the first injection tube (841) is connected to the first U-shaped tube (843); A plurality of the second liquid injection tubes (844) are provided, one end of each of the plurality of second liquid injection tubes (844) is connected to the bottom ends of the plurality of adjustment tubes (82), one end of each of the plurality of second liquid injection tubes (844) is connected to the second connecting tube (845), and one end of the second connecting tube (845) is connected to the second U-shaped tube (846); The first U-shaped tube (843) and the second U-shaped tube (846) are both connected to a second oil pump (847), and the input end of the second oil pump (847) is in communication with the oil storage tank (3); The other ends of the first U-shaped tube (843) and the second U-shaped tube (846) are connected to a liquid collecting shell (848), and the liquid collecting shell (848) is connected to a third oil pump (849). The liquid collecting shell (848) is connected to a liquid guide tube (8491), and one end of the liquid guide tube (8491) is connected to an oil outlet pipe (62). A solenoid valve is provided on the liquid guide tube (8491); Solenoid valves are provided at both ends of the first U-shaped tube (843) and the second U-shaped tube (846).

9. A system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 8, characterized in that: The top end of the oil outlet pipe (62) is connected to a mixing pipe (9), the mixing pipe (9) comprising an inlet end (91) and an outlet end (92), the outlet end (92) being connected to a steam generator (51); A heat transfer oil mixing element (93) is provided at the inlet end (91).

10. A system for efficiently recovering waste heat from sensible heat of calcium carbide according to claim 9, characterized in that: The heat transfer oil mixing element (93) comprises a first mixing plate (94) and a second mixing plate (95); the first mixing plate (94) and the second mixing plate (95) are both fixedly mounted inside the inlet end (91); the first mixing plate (94) is located below the second mixing plate (95); a plurality of outflow holes (941) are arranged around the first mixing plate (94); and a plurality of through holes (951) are arranged around the second mixing plate (95).

Images