Device for preparing V2O5 by using kiln waste heat NH4VO3

Abstract

The utility model provides a device for preparing V205 by using kiln waste heat NH4VO3. The device comprises a waste heat recovery system, an NH4VO3 supply system, a kiln body and a power supply system, a heating area and a reaction area are arranged in the kiln body, the heating area supplies heat to the reaction area, the heating area is connected with the waste heat recovery system and recovers kiln waste heat, and the power supply system is arranged on one side of the kiln body. The waste heat recovery system comprises a purification assembly and a recovery assembly, the air inlet end of the purification assembly is connected with the heating area, the air outlet end of the purification assembly is connected with the recovery assembly, the recovery assembly is further connected with a power generation device, and the power generation device is used for supplying power to the kiln body. The NH4VO3 supply system comprises a raw material storage tank, a metering pump and a conveying pipeline, the two ends of the conveying pipeline are communicated with the raw material storage tank and the reaction area respectively, the metering pump is installed on the conveying pipeline, and waste heat is effectively utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a device for preparing V205 by utilizing NH4VO3 waste heat from a kiln. Background Art

[0002] V205 is an important chemical raw material, widely used in metallurgy, chemical industry, ceramics and other fields. Traditional V205 preparation methods are often accompanied by high energy consumption and environmental pollution. Kilns, as a common thermal energy equipment, will generate a lot of waste heat during the calcination of ammonium metavanadate to prepare high-purity vanadium pentoxide. Most calcination equipment will purify this part of the waste heat before discharging it. If it is directly discharged, it will waste a lot of resources. Therefore, there is a lack of equipment that can effectively utilize this part of the waste heat to prepare V205.

[0003] The purpose of the utility model is to provide a device for preparing V205 by utilizing the waste heat of kiln NH4VO3, so as to solve the problems mentioned in the above background technology. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides a device for preparing V205 by utilizing the waste heat NH4VO3 of a kiln, comprising a waste heat recovery system, an NH4VO3 supply system, a kiln body, and a power supply system;

[0005] A heating zone and a reaction zone are provided inside the kiln body, the heating zone supplies heat to the reaction zone, the heating zone is connected to the waste heat recovery system to recover the waste heat of the kiln, the power supply system is arranged on one side of the kiln body, the reaction zone is connected to a flue gas exhaust pipe, the flue gas exhaust pipe is connected to a purification tower, a discharge port is provided on one side of the bottom of the reaction zone, and the discharge port is connected to a discharge pipe;

[0006] The waste heat recovery system includes a purification component and a recovery component, the air inlet end of the purification component is connected to the heating zone, the air outlet end of the purification component is connected to the recovery component, and the recovery component is also connected to a power generation device, and the power generation device is used to supply power to the kiln body;

[0007] The NH4VO3 supply system includes a raw material storage tank, a metering pump and a delivery pipeline. Both ends of the delivery pipeline are respectively connected to the raw material storage tank and the reaction zone, and the metering pump is installed on the delivery pipe.

[0008] As a further improvement of the present invention, the heating zone includes heating tubes, which are evenly laid on the inner wall of the heating zone and arranged around the outside of the reaction zone. The heating tubes are connected to a power supply system, and the power supply system is connected to the power generation device.

[0009] As a further improvement of the utility model, a waste gas discharge port is provided on one side of the heating zone, the waste gas discharge port is connected to a waste gas collection pipe, and the waste gas collection pipe is connected to the purification component;

[0010] The purification component includes a purification box, an air inlet, and an air outlet. The exhaust gas collection pipe is connected to the air inlet. A plurality of dust filter bags are evenly distributed inside the purification box. A nozzle is provided above the dust filter bag. The nozzle is connected to an air bag. The air bag is arranged on the outer wall of the purification box. A dust collecting chamber is provided inside the purification box. A debris discharge pipe is provided at the bottom of the purification box. The debris discharge pipe is connected to the dust collecting chamber. A valve is provided on the debris discharge pipe. The air outlet is connected to the recovery component.

[0011] As a further improvement of the utility model, the recovery component includes a waste heat collection pipe, a heat exchanger, and a conversion box, one end of the waste heat collection pipe is connected to the air outlet, and the other end is connected to the heat exchanger;

[0012] The heat exchanger is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet. The end of the waste heat collection pipe away from the purification box is connected to the air inlet, the air outlet is connected to the air outlet pipe, the air outlet pipe is connected to the conversion box, the liquid inlet is connected to the liquid inlet pipe, the liquid inlet pipe is connected to the water tank, a water pump is installed on the liquid inlet pipe, the liquid outlet is connected to the liquid outlet pipe, the liquid outlet pipe is connected to the conversion box, and the conversion box provides power to the power generation device.

[0013] As a further improvement of the present invention, the conversion box includes an outer shell and a water storage chamber, the water storage chamber is installed in the inner center of the outer shell, the water storage chamber is provided with a water inlet and a drain, the liquid outlet pipe passes through the outer shell and is connected with the water inlet, the drain outlet is connected with a drain pipe, the drain pipe is connected with the water tank, a temperature sensor is provided on the inner top wall of the water storage chamber, a solenoid valve is provided on the drain pipe, and a steam port is also provided on the water storage chamber, the steam port is connected with a steam pipe, and the steam pipe is connected to the power generation device.

[0014] As a further improvement of the utility model, a hot air outlet is provided on the outer shell, and one end of the outlet pipe away from the outlet is connected to the hot air outlet. An exhaust pipe is also provided on one side of the outer shell, and a solenoid valve 2 is provided on the exhaust pipe. A pressure sensor is provided inside the outer shell.

[0015] As a further improvement of the utility model, the power generation device comprises a gas pipeline, a turbine unit, and a generator, one end of the gas pipeline is connected to the steam pipe, a steam pump is provided on the gas pipeline, and the other end of the gas pipeline is connected to the turbine unit;

[0016] The turbine unit includes a high-pressure turbine, a medium-pressure turbine, and a low-pressure turbine. The air delivery pipe is connected to the air inlet end of the high-pressure turbine. The high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine are connected via a connecting shaft. A branch pipe is connected to the medium-pressure turbine, and the branch pipe is connected to the low-pressure turbine. The end of the connecting shaft is connected to the generator. The high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine are all provided with exhaust ports at the bottom.

[0017] As a further improvement of the utility model, a steam regulating member is further provided on the gas pipeline, and the steam regulating member includes a positioner and a control valve, the positioner is connected to the control valve, and the control valve is arranged on the gas pipeline.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model is provided with a waste heat recovery system and a power generation device, which collects waste heat exhaust gas from the heating zone inside the kiln body, and first removes impurities from the collected waste heat exhaust gas through a purification component. Removing impurities can effectively prevent impurities in the exhaust gas from polluting subsequent equipment. After the impurities are removed, the purified waste heat gas is input into a heat exchanger. At the same time, cold water is injected into the water inlet of the heat exchanger. The waste heat gas and the cold water exchange energy through the heat exchanger, so that the cold water obtains thermal energy for heating. The heated water flow is injected into a water storage tank for storage. The hot water in the water storage tank will generate a lot of water vapor, which is sucked and transported to the turbine unit through a steam pump, so that the turbine unit generates electricity for the generator. The electric energy generated by the generator is transmitted to the kiln body to power it, thereby realizing maximum resource utilization and avoiding resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0021] Figure 2 It is a top view of the utility model.

[0022] Figure 3 It is a cross-sectional view of the utility model.

[0023] Figure 4 It is a schematic diagram of the internal structure of the kiln body and purification component of the utility model.

[0024] Figure 5 This is a schematic diagram of the connection structure between the recycling component and the power generation device of the utility model.

[0025] In the figure: 1. kiln body; 101. heating zone; 102. reaction zone; 103. power supply system; 104. discharge pipe; 2. waste heat recovery system; 201. purification component; 2011. purification box; 2012. dust filter bag; 2013. dust collecting chamber; 202. recovery component; 2021. waste heat collection pipeline; 2022. heat exchanger; 2023. shell; 2024. outlet pipe; 2025. water storage chamber; 2026. temperature sensor; 2027. pressure sensor ; 2028, solenoid valve 2; 3, water tank; 301, liquid inlet pipe; 302, liquid outlet pipe; 303, water pump 1; 304, drain pipe; 305, solenoid valve 1; 4, power generation device; 401, gas pipeline; 402, turbine unit; 403, generator; 404, steam pipe; 405, steam pump; 406, branch pipe; 407, positioner; 408, control valve; 5, NH4VO3 supply system; 501, raw material storage tank; 502, metering pump; 503, transportation pipeline. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings. Example 1

[0030] See also Figure 1-5The utility model provides a device for preparing V205 by utilizing the waste heat NH4VO3 of a kiln, comprising a waste heat recovery system 2, an NH4VO3 supply system 5, a kiln body 1, and a power supply system 103;

[0031] A heating zone 101 and a reaction zone 102 are provided inside the kiln body 1. The heating zone 101 supplies heat to the reaction zone 102. The heating zone 101 is connected to the waste heat recovery system 2 to recover waste heat from the kiln. The power supply system 103 is arranged on one side of the kiln body 1. The reaction zone 102 is connected to a flue gas exhaust pipe, which is connected to a purification tower. A discharge port is provided on one side of the bottom of the reaction zone, which is connected to a discharge pipe 104.

[0032] The waste heat recovery system 2 includes a purification component 201 and a recovery component 202. The air inlet end of the purification component 201 is connected to the heating zone 101, and the air outlet end of the purification component 201 is connected to the recovery component 202. The recovery component 202 is also connected to a power generation device 4, and the power generation device 4 is used to supply power to the kiln body 1.

[0033] The NH4VO3 supply system 5 includes a raw material storage tank 501, a metering pump 502 and a delivery pipeline 503. Both ends of the delivery pipeline 503 are respectively connected to the raw material storage tank 501 and the reaction zone 102. The metering pump 502 is installed on the delivery pipe.

[0034] The heating zone 101 includes heating tubes, which are evenly laid on the inner wall of the heating zone 101 and arranged around the outside of the reaction zone 102 . The heating tubes are connected to a power supply system 103 , and the power supply system 103 is connected to the power generation device 4 .

[0035] When in use, first start the heating tube to heat the reaction zone 102. The heating tube is spread all around the outside of the reaction zone 102. When the reaction zone 102 is heated, the inside is heated more evenly. After the preheating is completed, the raw materials such as NH4VO3 in the raw material storage tube are transported to the reaction zone 102 of the kiln body 1 through the conveying pipe 503 by the metering pump 502 for heating reaction. During the heating process, unnecessary waste gas is generated in the heating zone 101, and then the residual heat of the heating zone 101 in the kiln body 1 is collected by the waste gas collection pipe. The waste gas is transported to the purification component 201 for purification treatment. The collected waste heat waste gas is first removed by the purification component 201. Removing impurities can effectively prevent the impurities in the waste gas from contaminating the subsequent recovery component 202 and the power generation device 4. After the impurity removal is completed, the purified waste heat gas is transported to the recovery component 202, and after heat energy exchange through the recovery component 202, it is transferred to the power generation device 4 for power generation. Finally, the obtained electricity is transferred to the kiln body 1 to provide it with electrical energy, thereby maximizing the utilization of waste heat waste gas and avoiding waste of resources. Example 2

[0036] See also Figure 1 , Figure 3 , Figure 4 A waste gas discharge port is provided on one side of the heating zone 101, and the waste gas discharge port is connected to a waste gas collecting pipe, and the waste gas collecting pipe is connected to the purification component 201;

[0037] The purification component 201 includes a purification box 2011, an air inlet, and an air outlet. The exhaust gas collection pipe is connected to the air inlet. The interior of the purification box 2011 is provided with a plurality of dust filter bags 2012 evenly distributed thereon. A nozzle is provided above the dust filter bag 2012. The nozzle is connected to an air bag, and the air bag is arranged on the outer wall of the purification box 2011. A dust collecting chamber 2013 is provided inside the purification box 2011. A debris discharge pipe is provided at the bottom of the purification box 2011. The debris discharge pipe is connected to the dust collecting chamber 2013. A valve is provided on the debris discharge pipe. The air outlet is connected to the recovery component 202.

[0038] Through this design, the waste heat exhaust gas can be first treated with impurities. When in use, the waste heat exhaust gas transports the excess waste heat of the heating zone 101 in the kiln body 1 to the purification box 2011 through the waste gas collection pipe, and is filtered through multiple dust removal filter bags in the purification box 2011. The filtered purified waste heat gas is output from the outlet, and the purified waste heat gas enters the recovery component 202 for recycling. In this embodiment, the nozzle and air bag arranged above the dust removal filter bag 2012 can blow off and remove impurities on the dust removal filter bag 2012. The impurities obtained after removal fall into the dust collecting chamber 2013 below the purification box 2011 and are discharged through the impurity removal pipe. Example 3

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , the recovery component 202 includes a waste heat collection pipe 2021, a heat exchanger 2022, and a conversion box, one end of the waste heat collection pipe 2021 is connected to the air outlet, and the other end is connected to the heat exchanger 2022;

[0040] The heat exchanger 2022 is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet. The end of the waste heat collection pipe 2021 away from the purification box 2011 is connected to the air inlet, the air outlet is connected to the air outlet pipe 2024, the air outlet pipe 2024 is connected to the conversion box, the liquid inlet is connected to the liquid inlet pipe 301, the liquid inlet pipe 301 is connected to the water tank 3, the liquid inlet pipe 301 is installed with a water pump 303, the liquid outlet is connected to the liquid outlet pipe 302, the liquid outlet pipe 302 is connected to the conversion box, and the conversion box provides power to the power generation device 4.

[0041] The conversion box includes an outer shell 2023 and a water storage chamber 2025. The water storage chamber 2025 is installed at the inner center of the outer shell 2023. The water storage chamber 2025 is provided with a water inlet and a drain. The liquid outlet pipe 302 passes through the outer shell 2023 and is connected to the water inlet. The drain is connected to a drain pipe 304, and the drain pipe 304 is connected to the water tank 3. A temperature sensor 2026 is provided on the inner top wall of the water storage chamber 2025. A solenoid valve 305 is provided on the drain pipe 304. A steam port is also provided on the water storage chamber 2025. The steam port is connected to a steam pipe 404, and the steam pipe 404 is connected to the power generation device 4.

[0042] The shell 2023 is provided with a hot air outlet, and the end of the outlet pipe 2024 away from the outlet is connected to the hot air outlet. An exhaust pipe is also provided on one side of the shell 2023, and a solenoid valve 2028 is provided on the exhaust pipe. A pressure sensor 2027 is provided inside the shell 2023. Through this design, when the pressure sensor 2027 detects that the gas input pressure in the shell 2023 is too high, the solenoid valve 2028 opens to release the pressure in the shell 2023.

[0043] The power generation device 4 includes a gas pipeline 401, a turbine unit 402, and a generator 403. One end of the gas pipeline 401 is connected to the steam pipe 404. A steam pump 405 is provided on the gas pipeline 401. The other end of the gas pipeline 401 is connected to the turbine unit 402.

[0044] The turbine unit 402 includes a high-pressure turbine, a medium-pressure turbine, and a low-pressure turbine. The gas pipe 401 is connected to the air inlet end of the high-pressure turbine. The high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine are connected via a connecting shaft. A branch pipe 406 is connected to the medium-pressure turbine, and the branch pipe 406 is connected to the low-pressure turbine. The end of the connecting shaft is connected to the generator 403. The high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine are all provided with exhaust ports at the bottom.

[0045] The gas pipeline 401 is also provided with a steam regulating member, and the steam regulating member includes a positioner 407 and a control valve 408 . The positioner 407 is connected to the control valve 408 , and the control valve 408 is provided on the gas pipeline 401 .

[0046] When in use, the purified waste heat gas is input into the heat exchanger 2022 from the air inlet, and at the same time, the cold water in the water tank 3 is injected from the water inlet of the heat exchanger 2022. The waste heat gas and the cold water exchange energy through the heat exchanger 2022, so that the cold water obtains heat energy for heating, and the heated water flow is injected into the water storage tank 3 for storage. The hot water in the water storage tank 3 will generate a lot of water vapor, which is sucked and transported to the high-pressure turbine of the turbine unit 402 by the steam pump 405. A branch pipe 406 is also provided on one side of the high-pressure turbine. The excess steam in the high-pressure turbine is transported to the medium-pressure turbine and the low-pressure turbine respectively through the branch pipe 406. The turbine impeller on the turbine is driven to rotate by the expansion force of the steam, thereby driving the generator 403 connected to the end of the connecting shaft to generate electricity, so that multiple turbines generate electricity for the generator 403, and multiple turbines are used for The power generation device 4 can effectively improve the thermal energy utilization efficiency and maintain high efficiency and reliability under different working conditions. The electric energy generated by the generator 403 is transmitted to the kiln body 1 to supply power to it, which is conducive to maximizing resource utilization and avoiding resource waste. In this embodiment, a temperature sensor 2026 is provided in the water storage chamber 2025. The temperature sensor 2026 is used to detect the temperature of the steam in the water storage chamber 2025. When the temperature in the water storage chamber 2025 is too high, the solenoid valve 305 is opened to inject cold water in the water tank 3 into the water storage chamber 2025 to cool the water storage chamber 2025. This design can prevent the high temperature steam from affecting its efficiency when it is transmitted to the turbine. At the same time, continuous operation at too high a temperature may also cause safety accidents. Therefore, controlling the steam temperature can effectively improve the safety of the power generation device 4.

[0047] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A device for preparing V2O5 using kiln waste heat NH4VO3, characterized in that: It includes a waste heat recovery system (2), an NH4VO3 supply system (5), a kiln body (1), and a power supply system (103); The kiln body (1) is provided with a heating zone (101) and a reaction zone (102) inside, the heating zone (101) supplies heat to the reaction zone (102), the heating zone (101) is connected to the waste heat recovery system (2) to recover waste heat from the kiln, the power supply system (103) is arranged on one side of the kiln body (1), the reaction zone (102) is connected to a flue gas exhaust pipe, the flue gas exhaust pipe is connected to a purification tower, a discharge port is provided on one side of the bottom of the reaction zone, and the discharge port is connected to a discharge pipe (104); The waste heat recovery system (2) comprises a purification component (201) and a recovery component (202), wherein an air inlet end of the purification component (201) is connected to the heating zone (101), and an air outlet end of the purification component (201) is connected to the recovery component (202), and the recovery component (202) is also connected to a power generation device (4), and the power generation device (4) is used to supply power to the kiln body (1); The NH4VO3 supply system (5) comprises a raw material storage tank (501), a metering pump (502) and a delivery pipeline (503), wherein two ends of the delivery pipeline (503) are respectively connected to the raw material storage tank (501) and the reaction zone (102), and the metering pump (502) is installed on the delivery pipe.

2. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 1, characterized in that: The heating zone (101) comprises a heating tube, the heating tube is evenly laid on the inner wall of the heating zone (101) and is arranged around the outside of the reaction zone (102), the heating tube is connected to a power supply system (103), and the power supply system (103) is connected to the power generation device (4).

3. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 2, characterized in that: A waste gas discharge port is provided on one side of the heating zone (101), the waste gas discharge port is connected to a waste gas collection pipe, and the waste gas collection pipe is in communication with the purification component (201); The purification component (201) comprises a purification box (2011), an air inlet, and an air outlet; the waste gas collection pipe is connected to the air inlet; a plurality of dust filter bags (2012) are evenly distributed inside the purification box (2011); a nozzle is provided above the dust filter bag (2012); the nozzle is connected to an air bag; the air bag is arranged on the outer wall of the purification box (2011); a dust collecting chamber (2013) is provided inside the purification box (2011); a debris discharge pipe is provided at the bottom of the purification box (2011); the debris discharge pipe is connected to the dust collecting chamber (2013); a valve is provided on the debris discharge pipe; and the air outlet is connected to the recovery component (202).

4. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 3, characterized in that: The recovery component (202) comprises a waste heat collection pipe (2021), a heat exchanger (2022), and a conversion box; one end of the waste heat collection pipe (2021) is connected to the air outlet, and the other end is connected to the heat exchanger (2022); The heat exchanger (2022) is provided with an air inlet, an air outlet, a liquid inlet, and a liquid outlet; one end of the waste heat collection pipe (2021) away from the purification box (211) is connected to the air inlet; the air outlet is connected to an air outlet pipe (2024); the air outlet pipe (2024) is connected to the conversion box; the liquid inlet is connected to a liquid inlet pipe (301); the liquid inlet pipe (301) is connected to a water tank (3); a water pump (303) is installed on the liquid inlet pipe (301); the liquid outlet is connected to a liquid outlet pipe (302); the liquid outlet pipe (302) is connected to the conversion box; the conversion box provides power to the power generation device (4).

5. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 4, characterized in that: The conversion box comprises an outer shell (2023) and a water storage chamber (2025). The water storage chamber (2025) is installed at the inner center of the outer shell (2023). The water storage chamber (2025) is provided with a water inlet and a drain outlet. The liquid outlet pipe (302) passes through the outer shell (2023) and is connected to the water inlet. The drain outlet is connected to a drain pipe (304). The drain pipe (304) is connected to the water tank (3). A temperature sensor (2026) is provided on the inner top wall of the water storage chamber (2025). A solenoid valve 1 (305) is provided on the drain pipe (304). The water storage chamber (2025) is also provided with a steam outlet. The steam outlet is connected to a steam pipe (404). The steam pipe (404) is connected to the power generation device (4).

6. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 5, characterized in that: The outer shell (2023) is provided with a hot air outlet, one end of the air outlet pipe (2024) away from the air outlet is connected to the hot air outlet, an exhaust pipe is also provided on one side of the outer shell (2023), a second solenoid valve (2028) is provided on the exhaust pipe, and a pressure sensor (2027) is provided inside the outer shell (2023).

7. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 5, characterized in that: The power generation device (4) comprises a gas pipeline (401), a turbine unit (402), and a generator (403); one end of the gas pipeline (401) is connected to the steam pipe (404); a steam pump (405) is provided on the gas pipeline (401); and the other end of the gas pipeline (401) is connected to the turbine unit (402); The turbine unit (402) comprises a high-pressure turbine, a medium-pressure turbine, and a low-pressure turbine; the gas transmission pipe (401) is connected to the air inlet end of the high-pressure turbine; the high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine are connected via a connecting shaft; the medium-pressure turbine is connected to a branch pipe (406), and the branch pipe (406) is connected to the low-pressure turbine; the end of the connecting shaft is connected to the generator (403); and exhaust ports are provided at the bottom of the high-pressure turbine, the medium-pressure turbine, and the low-pressure turbine.

8. The device for preparing V2O5 by utilizing the waste heat of kiln NH4VO3 according to claim 7, characterized in that: The gas transmission pipe (401) is also provided with a steam regulating component, the steam regulating component comprising a positioner (407) and a control valve (408), the positioner (407) being connected to the control valve (408), and the control valve (408) being provided on the gas transmission pipe (401).

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