Multi-step intelligent steam overheating device

Abstract

The invention discloses a multi-step intelligent steam overheating device, and relates to the technical field of coal chemical industry and oil refining chemical industry, one side of a gas distribution box is provided with gas distribution ports at equal intervals, gas distribution groove plates are slidably embedded in the gas distribution ports, and a plurality of heat exchange pipes are connected between the two gas distribution groove plates located on the same plane at equal intervals; a plurality of heat exchange fins are welded to the outer side of the heat exchange pipe at equal intervals, turbulent flow boxes are connected to the two ends of the heat exchange pipe, a swing shaft is rotationally connected between the adjacent turbulent flow boxes located on the same plane, and turbulent flow plates are welded to the positions, located in the turbulent flow boxes, of the outer side of the swing shaft. Multiple kinds of steam are heated at the same time, the requirements of users of different temperature grades can be met, heat generated by the heating furnace is more fully utilized, in the heat exchange process, the turbulent flow plates can stir saturated steam flowing in the heat exchange pipes when swinging, and the heat exchange effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of coal chemical industry and oil refining chemical industry, and in particular to a multi-stage intelligent steam superheating device. Background Art

[0002] my country's energy reserves are characterized by "rich in coal but insufficient in oil and gas". The industry uses advanced technology and processing methods to produce alternative petrochemical products and clean fuels. Coal gasification technology is a chemical technology that converts coal into combustible gas, which is conducive to reducing my country's dependence on foreign oil and gas. The gasifier of traditional coal chemical equipment cannot directly produce superheated steam, and a separate coal-fired boiler needs to be designed to produce steam for power generation and supply to the users of the equipment. At present, high-carbon emission enterprises such as petrochemicals and coal chemical industries need to reduce carbon emissions as required. In principle, new coal-fired boilers are not allowed. With the upgrading and innovation of gasifier technology, the emergence of semi-waste boiler gasifiers can produce a large amount of saturated steam as a by-product;

[0003] However, how to make good use of saturated steam is a practical problem facing the energy industry. In the Chinese patent with application number 202320520782.6 and titled "A coal gas waste heat recovery device for coke production", the patent simultaneously forms a two-level heat exchange structure by setting a first heat exchange box, a second heat exchange box and a water tank, so that the waste heat of the coal gas is utilized more fully. However, the existing heat exchangers often use fixed heat exchange tubes and heat exchange fins, and the heat exchange cavity is single and fixed. The gas distribution inside the heat exchange cavity is uneven, and the heat exchange effect is poor when heat exchange occurs with external heat. The heat exchanger cannot flexibly adjust the heat exchange effect according to actual needs, and has poor flexibility in use. In addition, the existing heat exchangers are mostly arranged horizontally, occupying a large area and having high space costs. Summary of the invention

[0004] The present invention provides a multi-stage intelligent steam superheating device, which can effectively solve the problems in the above-mentioned background technology that the existing heat exchangers often use fixed heat exchange tubes and heat exchange fins, the heat exchange cavity is single and fixed, the gas distribution inside the heat exchange cavity is uneven, the heat exchange effect is poor when heat exchange occurs with external heat, the heat exchanger cannot flexibly adjust the heat exchange effect according to actual needs, the flexibility of use is poor, and the existing heat exchangers are mostly horizontally arranged, occupying a large area and having a high space cost.

[0005] To achieve the above object, the present invention provides the following technical solutions: a multi-stage intelligent steam superheating device, comprising a heating furnace, a steam heating heat exchange component is arranged on the top of the heating furnace, and the steam heating heat exchange component comprises a connecting cylinder;

[0006] The top of the heating furnace is connected to several heat exchange boxes through several connecting tubes, an air inlet pipe is connected in the middle of one side of the heat exchange box, and an exhaust pipe is connected in the middle of the other side of the heat exchange box. An adjustable chassis is installed inside the connecting tube, and adjustable bottom holes are opened at equal intervals on the top of the adjustable chassis. An adjustable top plate is rotatably installed on the top of the adjustable chassis, and adjustable top holes are opened at equal intervals on the top of the adjustable top plate. One side of the outside of the connecting tube is connected to a graded heating pipe through a graded control valve, and a heat exhaust pipe is connected to the top of the connecting tube at the top;

[0007] Air distribution boxes are installed on both sides of the heat exchange box, the air intake pipe and the exhaust pipe are connected to the inside of the air distribution box, air distribution ports are opened at equal intervals on one side of the air distribution box, an air distribution slot plate is slidably embedded in the air distribution port, a number of heat exchange tubes are connected at equal intervals between two of the air distribution slot plates located in the same plane, a number of heat exchange fins are welded at equal intervals on the outside of the heat exchange tubes, turbulence boxes are connected at both ends of the heat exchange tubes, and a swing shaft is rotatably connected between adjacent turbulence boxes located in the same plane, a turbulence plate is welded inside the turbulence box on the outside of the swing shaft, and turbulence holes are opened on the surface of the turbulence plate.

[0008] According to the above technical solution, an adjusting cylinder is installed on the other side of the connecting tube, an adjusting rod is connected to the output end of the adjusting cylinder, an adjusting rack is connected to the side of the connecting tube observed from the top of the adjusting rod, an adjusting gear is connected to the top center of the adjusting top plate, and the adjusting rack is meshed with the adjacent adjusting gear.

[0009] According to the above technical solution, the two ends of the swing shaft respectively pass through both sides of the heat exchanger box, one end of the swing shaft is located on the outside of the heat exchanger box and a limit strip is welded thereon, and a plurality of swing frames are installed on the outside of the heat exchanger box and on the outside of one end of the swing shaft. A swing sleeve is rotatably installed on the top of the swing frame, and the swing sleeve is slidably sleeved on the outside of the adjacent limit strip.

[0010] According to the above technical solution, a guide frame is welded on one side of the swing sleeve, and swing cylinders are installed on both sides of one side of the heat exchange box close to the swing frame. The output end of the swing cylinder is connected to a linkage plate, and a plurality of linkage rods are welded on one side of the linkage plate. The top of the linkage rod is connected to a guide ear, and the guide ear is embedded in the adjacent guide frame.

[0011] A transposition frame is connected between one end of the two gas distribution slot plates located on the same plane, and transposition slide rods are welded at both ends of one side of the transposition frame. The top ends of several transposition slide rods located on the same side pass through the heat exchange box and are connected to the connecting frame, and the top ends of the remaining several transposition slide rods located on the same side pass through the heat exchange box and are also connected to the connecting frame.

[0012] According to the above technical solution, assembly frames are installed on both sides of one side of the heat exchange box near the connection frame, and shift cylinders are installed at both ends of the assembly frame. The output end of the shift cylinder is connected to the middle of the adjacent connection frame.

[0013] According to the above technical solution, the bottom surface of the adjustable top plate fits with the top surface of the adjustable bottom plate, and both the bottom surface of the adjustable top plate and the top surface of the adjustable bottom plate are smooth surfaces.

[0014] According to the above technical solution, steam recovery and cooling components are provided on both sides of the heat exchange box, and the steam recovery and cooling components include a drainage elbow;

[0015] One end of the air inlet pipe and the exhaust pipe are both connected to one end of the drainage elbow, a low-level drainage valve is connected to the bottom of the drainage elbow, the other end of the drainage elbow located on one side of the air inlet pipe is connected to one end of the saturated gas pipe, the other end of the saturated gas pipe is connected to one end of a flow meter, the other end of the flow meter is connected to an external saturated steam generating end, a shunt pipe is fixed on the top of one side of the heating furnace, one end of the bottom of the shunt pipe is connected to one side of the heating furnace through a drainage pump, and the bottom of the saturated gas pipe is connected to one side of the shunt pipe through a shunt valve;

[0016] The other end of the drainage elbow located on one side of the exhaust pipe is connected to an air intake box through a temperature measuring instrument, and the other end of the air intake box is connected to an exhaust box through a plurality of cooling pipes, and a plurality of partition plates are fixedly sleeved on the outside of the cooling pipe at equal intervals, and a partition cavity is provided between two adjacent partition plates, and an insulation cylinder is connected between the air intake box and the exhaust box and on the outside of the partition plate, and a water supply main pipe is fixed on one side of the insulation cylinder, and a water supply pump is installed on one side of the heating furnace, and one end of the bottom of the water supply main pipe is connected to the water outlet end of the water supply pump, and the insulation cylinder is provided with a plurality of partition plates. A water diversion box is installed on the top of the cylinder, one side of the water diversion box is connected to one side of the water supply main pipe, the other side of the water diversion box is connected to the top of the insulation cylinder through several water control valves with several water diversion branch pipes, the bottom of the water diversion branch pipe is connected to the top of the corresponding partition chamber, a drainage box is installed at the bottom of the insulation cylinder, several drainage branch pipes are connected between the top of the drainage box and the bottom of the insulation cylinder, the top of the drainage branch pipe is connected to the bottom of the corresponding partition chamber, a drainage main pipe is fixed to one side of the drainage box, and the bottom of the drainage box is connected to one side of the drainage main pipe.

[0017] According to the above technical solution, one end of the exhaust box is connected to one end of the pressure instrument, the other end of the pressure instrument is connected to one end of the temperature detection valve, and the other end of the temperature detection valve is connected to the external superheated steam collection end.

[0018] According to the above technical solution, rotating frames are installed at the bottom and top of the inner side of the air distribution box connected to the exhaust pipe, and a number of rotating shafts are rotatably installed at equal intervals between two adjacent rotating frames, and a number of mixing fans are connected at equal intervals in the middle of the rotating shafts. A mixing gear is connected to the top of the rotating shaft, and a driving rod is slidably installed on one side of the top of the inner side of the air distribution box close to the mixing gear. Driving teeth are provided at equal intervals on one side of the driving rod, and the driving teeth are meshed with adjacent mixing gears. Both ends of the driving rod respectively pass through both sides of the heat exchange box, and one end of the driving rod is connected to the top of an adjacent connecting frame.

[0019] According to the above technical solution, the hierarchical control valve, low-level drainage valve, diverter valve, water control valve and temperature detection valve are all electrically controlled valves, the flow meter, temperature measuring instrument and pressure meter are all electronic instruments, the electrically controlled valves, electronic instruments, drainage pumps and water supply pumps are all connected to the external controller through electrical signals, and the input end of the external controller is electrically connected to the output end of the external power supply.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. A steam heating heat exchange component is provided. After the hot gas generated by the heating furnace heats the high-pressure saturated steam, the medium-pressure saturated steam, the low-pressure saturated steam and the lower-pressure saturated steam are heated in turn in the subsequent heat rising process. Multiple steams are heated at the same time to meet the needs of users with different temperature levels, and the heat generated by the heating furnace is more fully utilized. The device is installed vertically to reduce the land use area and reduce the space use cost;

[0022] The hot air generated by the heating furnace flows through all the connecting tubes and the heat exchange box and is finally discharged from the heat exhaust pipe. The hot air discharged from the heat exhaust pipe enters the air preheater after denitration treatment, and exchanges heat with the cold air sent by the air supply system. The flue gas is discharged into the atmosphere after heat exchange and cooling. The hot air after heat exchange is sent to the combustion system of the heating furnace as a combustion aid. As the air temperature increases, the amount of fuel can be reduced, thereby reducing fuel use and flue gas generation;

[0023] The superheating device can also flexibly heat saturated steam of different pressures and temperatures. By controlling the graded control valve and the regulating cylinder, only the required saturated steam is heated, and the residual high-temperature flue gas can cross the remaining heat exchange boxes and finally be discharged from the heat exhaust pipe, avoiding the residual high-temperature flue gas from contacting the heat exchange pipes inside the remaining heat exchange boxes, reducing heat loss, and the heat contained in the residual high-temperature flue gas can be better recycled in the next step, with a higher heat utilization rate;

[0024] During the heat exchange process, the swing cylinder drives the guide ear to move inside the guide frame, and then drives the swing sleeve and the turbulence plate to swing. When the turbulence plate swings, it can stir the saturated steam flowing inside the heat exchange tube. When the saturated steam flows through the inside of the heat exchange tube, the heat exchange of the saturated steam inside the heat exchange tube is more uniform, and the heat exchange effect is better. At the same time, the transposition cylinder synchronously drives the heat exchange tube to swing. The back and forth swing of the heat exchange tube can stir the high-temperature flue gas flowing inside the heat exchange box, increase the contact area between the high-temperature flue gas and the heat exchange tube, and increase the heat exchange efficiency. The swing of the heat exchange tube can increase the gas flow field resistance, further increasing the heat exchange efficiency.

[0025] The saturated steam flow can be used by steam users throughout the plant after passing through the heat device, and the remaining steam is supplied to the waste heat generator, which is used to produce by-product electricity for use by electricity users throughout the plant. It can replace the heavily polluting coal-fired boilers and achieve coupled utilization of resources and energy.

[0026] 2. A steam recovery and cooling component is provided. When the transposition cylinder is in operation, it can also drive the driving rod to move back and forth. The driving teeth mesh with the mixing gear, thereby driving the rotating shaft and the mixing fan to rotate. The back and forth rotation of the mixing fan can stir the superheated steam inside the gas distribution box, making the heat distribution of the superheated steam inside the gas distribution box more uniform. After the superheated steam is discharged through the exhaust pipe, the temperature of the discharged superheated steam is basically the same, and the quality of the produced superheated steam is better;

[0027] When the amount of saturated steam produced is large, open the diverter valve and start the drainage pump. A part of the saturated steam can flow through the diverter pipe into the heating furnace to provide saturated coal steam for the heating furnace, reducing the use of fuel coal in the heating furnace and significantly reducing sulfur dioxide emissions from coal-fired boilers. The advantages of energy saving and emission reduction are obvious. The pressure instrument can detect the pressure of superheated steam. When steam is not needed downstream or in accident conditions such as severe temperature exceeding the standard, emergency high-point discharge can be carried out to ensure the operation stability of the device;

[0028] The temperature measuring instrument can monitor the temperature of superheated steam. When the temperature of superheated steam discharged from the exhaust pipe is low, reducing the saturated steam intake can increase the temperature of superheated steam. Superheated steam flows through the air intake box, cooling pipe and exhaust box. When the temperature of the produced superheated steam is high, the contact area between the cooling water and the cooling pipe can be changed by controlling different numbers of water control valves, thereby controlling the cooling effect, so that the device can be flexibly adjusted according to superheated steam at different temperatures. The cooling is more precise and the use flexibility is higher. After the cooling water cools the high-temperature superheated steam, the warm water generated by the heat exchange can be used by all employees in the factory, realizing the recycling of cooling water.

[0029] In summary, by controlling the graded control valve and the regulating cylinder in the steam heating heat exchange component, the heat generated by the heating furnace can be efficiently utilized. By controlling the diverter valve and the drainage pump in the steam recovery and cooling component, excess saturated steam can be sent into the heating furnace to provide fuel for the heating furnace, thereby reducing the use of fuel coal in the heating furnace. The two components interact with each other to make the energy utilization rate of the overall device higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0031] In the attached picture:

[0032] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the steam heating heat exchange component of the present invention;

[0034] Figure 3 It is a schematic diagram of the installation structure of the adjustable top plate of the present invention;

[0035] Figure 4 It is a schematic diagram of the installation structure of the gas distribution box of the present invention;

[0036] Figure 5 It is a schematic diagram of the installation structure of the adjusting gear of the present invention;

[0037] Figure 6 It is a schematic diagram of the installation structure of the connecting frame of the present invention;

[0038] Figure 7 It is a schematic diagram of the installation structure of the gas distribution slot plate of the present invention;

[0039] Figure 8 It is a schematic diagram of the installation structure of the heat exchange tube of the present invention;

[0040] Fig. 9 It is a schematic diagram of the installation structure of the swing sleeve of the present invention;

[0041] Fig.10 It is a structural schematic diagram of the steam recovery and cooling component of the present invention;

[0042] Fig.11 It is a schematic diagram of the installation structure of the cooling pipe of the present invention;

[0043] Fig.12 It is a schematic diagram of the installation structure of the hybrid fan of the present invention;

[0044] Fig.13 The present invention comes from Fig.12 A magnified image of area A;

[0045] Numbers in the figure: 1, heating furnace;

[0046] 2. Steam heating heat exchange assembly; 201. Connecting cylinder; 202. Heat exchange box; 203. Air inlet pipe; 204. Exhaust pipe; 205. Adjustment cylinder; 206. Adjustment gear; 207. Adjustment rod; 208. Adjustment rack; 209. Adjustment bottom plate; 210. Adjustment bottom hole; 211. Adjustment top plate; 212. Adjustment top hole; 213. Graded heating pipe; 214. Exhaust pipe; 215. Air distribution box; 216. Air distribution port; 217. Air distribution slot plate; 218. Heat exchange tube; 219, heat exchange fin; 220, turbulence box; 221, swing shaft; 222, turbulence plate; 223, turbulence hole; 224, limit strip; 225, swing frame; 226, swing sleeve; 227, guide frame; 228, swing cylinder; 229, linkage plate; 230, linkage rod; 231, guide ear; 232, transposition frame; 233, transposition slide rod; 234, connecting frame; 235, assembly frame; 236, transposition cylinder; 237, step control valve;

[0047] 3. Steam recovery and cooling components; 301. Drain elbow; 302. Low-level drain valve; 303. Saturated gas pipe; 304. Flow meter; 305. Diverter pipe; 306. Diverter valve; 307. Drainage pump; 308. Temperature measuring instrument; 309. Air intake box; 310. Exhaust box; 311. Cooling pipe; 312. Partition plate; 313. Partition chamber; 314. Insulation cylinder; 315. Water supply main pipe; 316. Water distribution box; 317. Water distribution branch pipe; 318. Water control valve; 319. Water supply pump; 320. Drain box; 321. Drain branch pipe; 322. Drain main pipe; 323. Pressure instrument; 324. Temperature detection valve; 325. Rotating frame; 326. Rotating shaft; 327. Mixing fan; 328. Mixing gear; 329. Driving rod; 330. Driving gear. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0049] Example: Figure 1-13As shown, the present invention provides a multi-stage intelligent steam superheating device technical solution, including a heating furnace 1, a steam heating heat exchange component 2 is arranged on the top of the heating furnace 1, and the steam heating heat exchange component 2 includes a connecting tube 201, a heat exchange box 202, an air inlet pipe 203, an exhaust pipe 204, an adjustment cylinder 205, an adjustment gear 206, an adjustment rod 207, an adjustment rack 208, an adjustment bottom plate 209, an adjustment bottom hole 210, an adjustment top plate 211, an adjustment top hole 212, a step heating pipe 213, and a heat exhaust pipe 214. 4. Gas distribution box 215, gas distribution port 216, gas distribution slot plate 217, heat exchange tube 218, heat exchange fin 219, turbulence box 220, swing shaft 221, turbulence plate 222, turbulence hole 223, limit strip 224, swing frame 225, swing sleeve 226, guide frame 227, swing cylinder 228, linkage plate 229, linkage rod 230, guide ear 231, transposition frame 232, transposition slide rod 233, connecting frame 234, assembly frame 235, transposition cylinder 236 and graded control valve 237;

[0050] The top of the heating furnace 1 is connected to a plurality of heat exchange boxes 202 through a plurality of connecting tubes 201, an air inlet pipe 203 is connected in the middle of one side of the heat exchange box 202, and an exhaust pipe 204 is connected in the middle of the other side of the heat exchange box 202. An adjusting chassis 209 is installed inside the connecting tube 201, and adjusting bottom holes 210 are opened at equal intervals on the top of the adjusting chassis 209. An adjusting top plate 211 is rotatably installed on the top of the adjusting chassis 209, and adjusting top holes 212 are opened at equal intervals on the top of the adjusting top plate 211. A graded heating pipe 213 is connected to one side of the external side of the connecting tube 201 through a graded control valve 237. An adjusting cylinder 205 is installed on the other side of the external side of the connecting tube 201, and an adjusting rod 207 is connected to the output end of the adjusting cylinder 205. An adjusting rack 208 is connected to one side of the connecting tube 201 when observing the top of the adjusting rod 207. The adjusting top plate 211 is connected to the adjusting rack 208. An adjusting gear 206 is connected to the top center, and an adjusting rack 208 meshes with an adjacent adjusting gear 206. The adjusting cylinder 205 can drive the adjusting rod 207 and the adjusting rack 208 to move, thereby driving the adjusting gear 206 and the adjusting top plate 211 to rotate. The rotation of the adjusting top plate 211 can change the overlapping area between the adjusting bottom hole 210 and the adjusting top hole 212. By changing the overlapping area between the adjusting bottom hole 210 and the adjusting top hole 212, the amount of hot air passing through can be changed. The bottom surface of the adjusting top plate 211 fits with the top surface of the adjusting bottom plate 209, so that the sealing between the bottom surface of the adjusting top plate 211 and the top surface of the adjusting bottom plate 209 is better. The bottom surface of the adjusting top plate 211 and the top surface of the adjusting bottom plate 209 are both smooth surfaces, so that the friction resistance between the adjusting top plate 211 and the adjusting bottom plate 209 is reduced;

[0051] The top of the connecting tube 201 at the top is connected with a heat exhaust pipe 214. The hot air generated by the heating furnace 1 flows through all the connecting tubes 201 and the inside of the heat exchange box 202 and is finally discharged from the heat exhaust pipe 214. The hot air discharged from the heat exhaust pipe 214 enters the air preheater after denitration treatment, and exchanges heat with the cold air sent by the air supply system. The flue gas is discharged into the atmosphere after heat exchange and cooling. The hot air after heat exchange is sent to the combustion system of the heating furnace 1 as a combustion aid. As the air temperature increases, the sensible heat increases, which can reduce the amount of fuel used, thereby reducing fuel use and flue gas generation;

[0052] Air distribution boxes 215 are installed on both sides of the heat exchange box 202, and the air inlet pipe 203 and the exhaust pipe 204 are both connected to the inside of the air distribution box 215. Air distribution ports 216 are opened at equal intervals on one side of the air distribution box 215, and an air distribution slot plate 217 is slidably embedded in the air distribution port 216. A number of heat exchange tubes 218 are connected at equal intervals between two air distribution slot plates 217 located in the same plane, and a number of heat exchange fins 219 are welded at equal intervals on the outside of the heat exchange tubes 218. Turbulence boxes 220 are connected at both ends of the heat exchange tubes 218. A swing shaft 221 is rotatably connected between adjacent turbulence boxes 220 located in the same plane. A turbulence plate 222 is welded inside the turbulence box 220 on the outside of the swing shaft 221. Turbulence holes 223 are opened on the surface of the turbulence plate 222. The two ends of the swing shaft 221 respectively penetrate the heat exchange On both sides of the box 202, one end of the swing shaft 221 is welded to the outer side of the heat exchange box 202 with a limit strip 224, and a plurality of swing frames 225 are installed on the outer side of one end of the swing shaft 221 on one side of the outside of the heat exchange box 202. A swing sleeve 226 is rotatably installed on the top of the swing frame 225. The swing sleeve 226 is slidably sleeved on the outer side of the adjacent limit strip 224. Under the limiting effect of the limit strip 224, the swing sleeve 226 can drive the swing shaft 221 and the turbulence plate 222 to swing when it rotates. When the turbulence plate 222 swings, it can stir the saturated steam flowing inside the heat exchange tube 218. After being stirred, the saturated steam is more evenly distributed inside the heat exchange tube 218. When the saturated steam flows through the inside of the heat exchange tube 218, the heat exchange of the saturated steam inside the heat exchange tube 218 is more uniform, and the heat exchange effect is better.

[0053] A guide frame 227 is welded on one side of the swing sleeve 226, and a swing cylinder 228 is installed on both sides of one side of the heat exchange box 202 near the swing frame 225. The output end of the swing cylinder 228 is connected to a linkage plate 229, and a plurality of linkage rods 230 are welded on one side of the linkage plate 229. A guide ear 231 is connected to the top of the linkage rod 230, and the guide ear 231 is embedded in the adjacent guide frame 227. The swing cylinder 228 can drive the linkage plate 229 and the linkage rod 230 to swing back and forth. When the guide ear 231 moves inside the guide frame 227, it can drive the swing sleeve 226 to rotate, thereby driving the turbulence plate 222 to swing.

[0054] A transposition frame 232 is connected between one end of two gas distribution slot plates 217 located on the same plane, and transposition slide bars 233 are welded at both ends of one side of the transposition frame 232. The top ends of several transposition slide bars 233 located on the same side penetrate the heat exchange box 202 and are connected to the connecting frame 234. The top ends of the remaining several transposition slide bars 233 located on the same side penetrate the heat exchange box 202 and are also connected to the connecting frame 234. Assembly frames 235 are installed on both sides of one side of the heat exchange box 202 near the connecting frame 234. Transposition cylinders 236 are installed at both ends of the assembly frame 235. The output end of the transposition cylinder 236 is connected to the middle of the adjacent connecting frame 234. Under the connection action of the transposition slide bar 233, the transposition cylinder 236 can synchronously drive the gas distribution slot plate 217 connected to the transposition frame 232 to swing, thereby driving the heat exchange tube 218 to swing.

[0055] Steam recovery and cooling components 3 are arranged on both sides of the heat exchange box 202. The steam recovery and cooling components 3 include a drainage elbow 301, a low-level drainage valve 302, a saturated gas pipe 303, a flow meter 304, a diverter pipe 305, a diverter valve 306, a drainage pump 307, a temperature measuring instrument 308, an air intake box 309, an exhaust box 310, a cooling pipe 311, a partition plate 312, a partition chamber 313, a heat preservation cylinder 314, a water supply main pipe 315, a water distribution box 316, a water distribution branch pipe 317, a water control valve 318, a water supply pump 319, a drainage box 320, a drainage branch pipe 321, a drainage main pipe 322, a pressure meter 323, a temperature detection valve 324, a rotating frame 325, a rotating shaft 326, a mixing fan 327, a mixing gear 328, a driving rod 329 and a driving gear 330.

[0056] A rotating frame 325 is installed at the bottom and top of the inner side of the air distribution box 215 connected to the exhaust pipe 204. A plurality of rotating shafts 326 are rotatably installed at equal intervals between two adjacent rotating frames 325. A plurality of mixing fans 327 are connected at equal intervals in the middle of the rotating shafts 326. A mixing gear 328 is connected to the top of the rotating shaft 326. A driving rod 329 is slidably installed on one side of the inner top of the air distribution box 215 near the mixing gear 328. Driving teeth 330 are provided at equal intervals on one side of the driving rod 329. The driving teeth 330 mesh with the adjacent mixing gears 328. The two ends of the driving rod 329 respectively pass through the two sides of the heat exchange box 202, and one end of the driving rod 329 is connected to the top of an adjacent connecting frame 234.

[0057] One end of the air inlet pipe 203 and the exhaust pipe 204 are both connected to one end of the drainage elbow 301. The bottom of the drainage elbow 301 is connected to a low-level drainage valve 302. When there is water in the pipe, the water in the pipe can be discharged through the low-level drainage valve 302. The other end of the drainage elbow 301 located on one side of the air inlet pipe 203 is connected to one end of the saturated gas pipe 303. The other end of the saturated gas pipe 303 is connected to one end of a flow meter 304. The other end of the flow meter 304 is connected to an external saturated steam generating end. A shunt pipe 305 is fixed on the top of one side of the heating furnace 1. One end of the bottom of the shunt pipe 305 is connected to one side of the heating furnace 1 through a drainage pump 307. The bottom of the saturated gas pipe 303 is connected to one side of the shunt pipe 305 through a shunt valve 306.

[0058] The other end of the drainage elbow 301 located on one side of the exhaust pipe 204 is connected to an air intake box 309 through a temperature measuring instrument 308, and the other end of the air intake box 309 is connected to an exhaust box 310 through a plurality of cooling pipes 311. A plurality of partition plates 312 are fixedly sleeved at equal intervals on the outside of the cooling pipes 311, and a partition cavity 313 is provided between two adjacent partition plates 312. A heat preservation tube 314 is connected between the air intake box 309 and the exhaust box 310 and on the outside of the partition plates 312. A water supply main pipe 315 is fixed on one side of the heat preservation tube 314. A water supply pump 319 is installed on one side of the heating furnace 1. One end of the bottom of the water supply main pipe 315 is connected to the water outlet end of the water supply pump 319. A water distribution box 316 is installed on the top of the heat preservation tube 314. One side of the water distribution box 316 is connected to one side of the water supply main pipe 315, and the other side of the water distribution box 316 is connected to the top of the heat preservation tube 314 through a plurality of water control valves 3 18 is connected with a plurality of water branch pipes 317, the bottom of the water branch pipes 317 is connected with the top of the corresponding partition chamber 313, a drainage box 320 is installed at the bottom of the insulation tube 314, a plurality of drainage branch pipes 321 are connected between the top of the drainage box 320 and the bottom of the insulation tube 314, the top of the drainage branch pipe 321 is connected with the bottom of the corresponding partition chamber 313, a drainage main pipe 322 is fixed on one side of the drainage box 320, the bottom of the drainage box 320 is connected with one side of the drainage main pipe 322, one end of the exhaust box 310 is connected to one end of the pressure instrument 323, the other end of the pressure instrument 323 is connected to one end of the temperature detection valve 324, the other end of the temperature detection valve 324 is connected to the external superheated steam collection end, the pressure instrument 323 can detect the pressure of the superheated steam, when the downstream does not need steam, or in the event of an accident such as a serious temperature exceeding the standard, emergency high-point discharge can be performed;

[0059] The graded control valve 237, the low-level drainage valve 302, the diverter valve 306, the water control valve 318 and the temperature detection valve 324 are all electrically controlled valves, the flow meter 304, the temperature measuring instrument 308 and the pressure meter 323 are all electronic instruments, the electrically controlled valves, the electronic instruments, the drainage pump 307 and the water supply pump 319 are all connected to the external controller through electrical signals, the input end of the external controller is electrically connected to the output end of the external power supply, the electronic instrument can feed back data to the controller, and the controller can control the corresponding electrically controlled valves, the drainage pump 307 and the water supply pump 319 according to the feedback data.

[0060] The working principle and use process of the present invention are as follows: one end of each flow meter 304 is connected to the high-pressure saturated steam, medium-pressure saturated steam, low-pressure saturated steam and lower-pressure saturated steam generating ends in sequence from bottom to top. When the superheating device is in use, the fuel in the heating furnace 1 burns to generate hot gas, and the hot gas rises through the regulating bottom hole 210 and the regulating top hole 212 to enter each connecting tube 201 and the heat exchange box 202. The saturated steam flows through the flow meter 304, the saturated gas pipe 303, the drainage elbow 301 and the intake pipe 203 at one end to enter the gas distribution box 215 on one side, and then flows through the heat exchange pipe 218 to enter the gas distribution box 215 on the other side. The high-temperature gas and the heat exchange The tube 218 is in contact with the heat exchange fin 219, and the saturated steam inside the heat exchange tube 218 is heated to heat the saturated steam into superheated steam. The temperature relationship of the superheated steam is: high-pressure superheated steam> medium-pressure superheated steam> low-pressure superheated steam> lower-pressure superheated steam. After the hot gas generated by the heating furnace 1 heats the high-pressure saturated steam, the medium-pressure saturated steam, the low-pressure saturated steam and the lower-pressure saturated steam are heated in turn in the subsequent heat rising process. Multiple steams are heated at the same time, which can meet the needs of users with different temperature levels and make more full use of the heat generated by the heating furnace 1. In addition, the vertical installation of the device reduces the land use area and reduces the space use cost.

[0061] The top of the connecting tube 201 at the top is connected with a heat exhaust pipe 214. The hot air generated by the heating furnace 1 flows through all the connecting tubes 201 and the inside of the heat exchange box 202 and is finally discharged from the heat exhaust pipe 214. The hot air discharged from the heat exhaust pipe 214 enters the air preheater after denitration treatment, and exchanges heat with the cold air sent by the air supply system. The flue gas is discharged into the atmosphere after heat exchange and cooling. The hot air after heat exchange is sent to the combustion system of the heating furnace 1 as a combustion aid. As the air temperature increases, the amount of fuel can be reduced, thereby reducing fuel use and flue gas generation;

[0062] The superheating device can also flexibly heat saturated steam of different pressures and temperatures. For example, when only high-pressure saturated steam needs to be heated, the bottom and top graded control valves 237 are opened, and the remaining graded control valves 237 are closed. The bottom and top regulating cylinders 205 are controlled, and the regulating cylinders 205 drive the regulating top plate 211 to rotate, so that the regulating bottom hole 210 is aligned with the regulating top hole 212. The remaining regulating cylinders 205 are controlled to drive the regulating top plate 211 to rotate, and the regulating top plate 211 blocks the regulating bottom hole 210. At this time, the hot gas generated by the heating furnace 1 can only flow through the bottom connecting tube 201, the heat exchange box 202 and the graded control valve 237 to enter the graded heating pipe 213. The residual high-temperature flue gas flows through the topmost staged control valve 237, enters the topmost heat exchange box 202 and the connecting cylinder 201, and is finally discharged through the heat exhaust pipe 214. After the high-pressure saturated steam is heated, the residual high-temperature flue gas can cross the remaining heat exchange boxes 202 and finally be discharged from the heat exhaust pipe 214, avoiding the residual high-temperature flue gas from contacting the heat exchange pipes 218 inside the remaining heat exchange boxes 202, reducing heat loss, and the heat contained in the residual high-temperature flue gas can be better recycled in the next step, with a higher heat utilization rate. Similarly, when heating saturated steam of other specifications, the heat generated by the heating furnace 1 can be effectively utilized by flexibly controlling the staged control valve 237 and the regulating cylinder 205;

[0063] During the heat exchange process, the swing cylinder 228 and the shift cylinder 236 operate simultaneously. The swing cylinder 228 drives the linkage plate 229 and the linkage rod 230 to swing back and forth, thereby driving the guide ear 231 to move inside the guide frame 227. When the guide ear 231 moves inside the guide frame 227, it drives the swing sleeve 226 to rotate, thereby driving the turbulence plate 222 to swing. Under the limiting action of the limiting bar 224, the swing sleeve 226 can drive the swing shaft 221 and the turbulence plate 222 to swing when it rotates. When the turbulence plate 222 swings, it can stir the saturated heat flowing inside the heat exchange tube 218. and steam. After being stirred, the saturated steam is more evenly distributed inside the heat exchange tube 218. When the saturated steam flows through the heat exchange tube 218, the heat exchange of the saturated steam inside the heat exchange tube 218 is more even, and the heat exchange effect is better. At the same time, the shift cylinder 236 synchronously drives the heat exchange tube 218 to swing. The back and forth swing of the heat exchange tube 218 can stir the high-temperature flue gas flowing through the heat exchange box 202, increase the contact area between the high-temperature flue gas and the heat exchange tube 218, and increase the heat exchange efficiency. At the same time, the swing of the heat exchange tube 218 can increase the gas flow field resistance, further increasing the heat exchange efficiency.

[0064] The saturated steam is heated and flows through the heat exchange tube 218 to become superheated steam, and then enters the gas distribution box 215 on the other side. The driving rod 329 is connected to a connecting frame 234. The shift cylinder 236 also drives the driving rod 329 to move back and forth. The driving gear 330 is meshed with the mixing gear 328, thereby driving the rotating shaft 326 and the mixing fan 327 to rotate. The back and forth rotation of the mixing fan 327 can stir the superheated steam inside the gas distribution box 215, so that the heat distribution of the superheated steam inside the gas distribution box 215 is more uniform. After the superheated steam is discharged through the exhaust pipe 204, the temperature of the discharged superheated steam is basically the same, and the quality of the produced superheated steam is better.

[0065] After passing through the heat device, the saturated steam flow can be used by steam users throughout the plant, and the remaining steam can be used by the waste heat generator to produce by-product electricity for use by power users throughout the plant. This can replace the heavily polluting coal-fired boilers and achieve resource and energy coupling utilization.

[0066] A shunt pipe 305 is fixed on the top of one side of the heating furnace 1. One end of the bottom of the shunt pipe 305 is connected to one side of the heating furnace 1 through a drainage pump 307. The bottom of the saturated gas pipe 303 is connected to one side of the shunt pipe 305 through a shunt valve 306. When the amount of saturated steam produced is large, the shunt valve 306 is opened and the drainage pump 307 is started. A part of the saturated steam can flow through the shunt pipe 305 into the heating furnace 1 to provide saturated coal steam for the heating furnace 1, thereby reducing the use of fuel coal for the heating furnace 1 and greatly reducing the sulfur dioxide emissions generated by the coal-fired boiler, with obvious advantages in energy saving and emission reduction.

[0067] One end of the exhaust box 310 is connected to one end of the pressure instrument 323, and the other end of the pressure instrument 323 is connected to one end of the temperature detection valve 324. The other end of the temperature detection valve 324 is connected to the external superheated steam collection end. The pressure instrument 323 can detect the pressure of the superheated steam. When the downstream does not need steam, or in the event of an accident such as a serious temperature exceeding the standard, emergency high-point discharge can be performed to ensure the operating stability of the device;

[0068] The temperature measuring instrument 308 can monitor the temperature of the superheated steam. When the temperature of the superheated steam discharged from the exhaust pipe 204 is low, the saturated steam intake volume is reduced to increase the temperature of the superheated steam. When the temperature of the produced superheated steam is high, the superheated steam flows through the air intake box 309, the cooling pipe 311 and the exhaust box 310, the water supply pump 319 is started, and the cooling water flows through the water supply main pipe 315 into the water distribution box 316. The switch of the water control valve 318 connected to the water distribution branch pipe 317 is controlled according to the exceeded temperature. When the exceeded temperature is small, only a small amount of the water control valve 318 needs to be opened, and the cooling water flows through the opened water control valve 318 and the water distribution branch pipe 317 into the corresponding partition chamber 313, and finally flows through the drainage branch pipe 32 1 and the drainage box 320 enter the interior of the drainage main pipe 322, the cooling water contacts the partition plate 312 and the cooling pipe 311, and the superheated steam is cooled. By controlling different numbers of water control valves 318, the contact area between the cooling water and the cooling pipe 311 can be changed, thereby controlling the cooling effect, so that the device can be flexibly adjusted according to superheated steam at different temperatures. The cooling is more accurate and the use flexibility is higher. After the cooling water cools the high-temperature superheated steam, the warm water generated by the heat exchange can be used by all employees in the plant, realizing the recycling of cooling water. When the superheated steam does not need to be cooled, the insulation tube 314 has a heat preservation effect. The insulation tube 314 can be added according to the length of the conveying pipeline to reduce the heat loss during the conveying process.

[0069] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage intelligent steam superheating device, comprising a heating furnace (1), characterized in that: A steam heating heat exchange component (2) is arranged on the top of the heating furnace (1), and the steam heating heat exchange component (2) comprises a connecting cylinder (201); The top of the heating furnace (1) is connected to a plurality of heat exchange boxes (202) via a plurality of connecting tubes (201); an air inlet pipe (203) is connected in the middle of one side of the heat exchange box (202); an exhaust pipe (204) is connected in the middle of the other side of the heat exchange box (202); an adjustable chassis (209) is installed inside the connecting tube (201); adjustable bottom holes (210) are opened at equal intervals on the top of the adjustable chassis (209); an adjustable top plate (211) is rotatably installed on the top of the adjustable chassis (209); adjustable top holes (212) are opened at equal intervals on the top of the adjustable top plate (211); a stepped heating pipe (213) is connected to the outside of the connecting tube (201) via a stepped control valve (237); and a heat exhaust pipe (214) is connected to the top of the connecting tube (201) located at the top; Gas distribution boxes (215) are installed on both sides of the heat exchange box (202), the air inlet pipe (203) and the exhaust pipe (204) are both connected to the inside of the gas distribution box (215), one side of the gas distribution box (215) is provided with gas distribution ports (216) at equal intervals, a gas distribution slot plate (217) is slidably embedded in the gas distribution port (216), and a plurality of heat exchange tubes (217) are connected at equal intervals between two gas distribution slot plates (217) located on the same plane. 8), a plurality of heat exchange fins (219) are welded at equal intervals on the outside of the heat exchange tube (218), turbulence boxes (220) are connected to both ends of the heat exchange tube (218), and a swing shaft (221) is rotatably connected between adjacent turbulence boxes (220) located in the same plane, and a turbulence plate (222) is welded to the inside of the turbulence box (220) on the outside of the turbulence shaft (221), and turbulence holes (223) are opened on the surface of the turbulence plate (222).

2. A multi-stage intelligent steam superheating device according to claim 1, characterized in that: An adjusting cylinder (205) is installed on the other side of the connecting cylinder (201), the output end of the adjusting cylinder (205) is connected to an adjusting rod (207), the top end of the adjusting rod (207) is connected to an adjusting rack (208) on the side of the connecting cylinder (201) when viewed from the top, the top center of the adjusting top plate (211) is connected to an adjusting gear (206), and the adjusting rack (208) is meshed with an adjacent adjusting gear (206).

3. A multi-stage intelligent steam superheating device according to claim 1, characterized in that: The two ends of the swing shaft (221) respectively pass through the two sides of the heat exchange box (202); one end of the swing shaft (221) is located on the outside of the heat exchange box (202) and is welded with a limit strip (224); a plurality of swing frames (225) are installed on one side of the outside of the heat exchange box (202) and located on the outside of one end of the swing shaft (221); a swing sleeve (226) is rotatably installed on the top of the swing frame (225); and the swing sleeve (226) is slidably sleeved on the outside of an adjacent limit strip (224).

4. A multi-stage intelligent steam superheating device according to claim 3, characterized in that: A guide frame (227) is welded to one side of the swing sleeve (226); swing cylinders (228) are installed on both sides of one side of the heat exchange box (202) close to the swing frame (225); the output end of the swing cylinder (228) is connected to a linkage plate (229); a plurality of linkage rods (230) are welded to one side of the linkage plate (229); the top end of the linkage rod (230) is connected to a guide ear (231); and the guide ear (231) is embedded in the adjacent guide frame (227); A transposition frame (232) is connected between one end of the two gas distribution slot plates (217) located on the same plane, and transposition slide bars (233) are welded at both ends of one side of the transposition frame (232). The top ends of several transposition slide bars (233) located on the same side pass through the heat exchange box (202) and are connected to a connecting frame (234), and the top ends of the remaining several transposition slide bars (233) located on the same side pass through the heat exchange box (202) and are also connected to a connecting frame (234).

5. The multi-stage intelligent steam superheating device according to claim 3 is characterized in that: Assembly frames (235) are installed on both sides of one side of the heat exchange box (202) near the connection frames (234), and shift cylinders (236) are installed at both ends of the assembly frame (235). The output end of the shift cylinder (236) is connected to the middle of the adjacent connection frame (234).

6. The multi-stage intelligent steam superheating device according to claim 1 is characterized in that: The bottom surface of the adjustable top plate (211) fits the top surface of the adjustable bottom plate (209), and both the bottom surface of the adjustable top plate (211) and the top surface of the adjustable bottom plate (209) are smooth surfaces.

7. The multi-stage intelligent steam superheating device according to claim 1 is characterized in that: Steam recovery and cooling components (3) are arranged on both sides of the heat exchange box (202), and the steam recovery and cooling components (3) include a drainage elbow (301); One end of the air inlet pipe (203) and the exhaust pipe (204) are both connected to one end of the drainage elbow (301); a low-level drainage valve (302) is connected to the bottom of the drainage elbow (301); the other end of the drainage elbow (301) located on one side of the air inlet pipe (203) is connected to one end of the saturated gas pipe (303); the other end of the saturated gas pipe (303) is connected to one end of a flow meter (304); the other end of the flow meter (304) is connected to an external saturated steam generating end; a diverter pipe (305) is fixed to the top of one side of the heating furnace (1); one end of the bottom of the diverter pipe (305) is connected to one side of the heating furnace (1) via a drainage pump (307); and the bottom of the saturated gas pipe (303) is connected to one side of the diverter pipe (305) via a diverter valve (306); The other end of the drainage elbow (301) located on one side of the exhaust pipe (204) is connected to an air intake box (309) through a temperature measuring instrument (308), and the other end of the air intake box (309) is connected to an exhaust box (310) through a plurality of cooling pipes (311). A plurality of partition plates (312) are fixedly sleeved at equal intervals on the outside of the cooling pipe (311), and a partition cavity (313) is provided between two adjacent partition plates (312). An insulation tube (314) is connected between the air intake box (309) and the exhaust box (310) and located on the outside of the partition plates (312). A water supply main pipe (315) is fixed on one side of the insulation tube (314). A water supply pump (319) is installed on one side of the heating furnace (1), and one end of the bottom of the water supply main pipe (315) is connected to the water outlet of the water supply pump (319). A water diversion box (316) is installed at the top of the heat preservation tube (314), one side of the water diversion box (316) is connected to one side of the water supply main pipe (315), the other side of the water diversion box (316) is connected to a plurality of water diversion branch pipes (317) at the top of the heat preservation tube (314) through a plurality of water control valves (318), the bottom of the water diversion branch pipe (317) is connected to the top of the corresponding partition chamber (313), a drainage box (320) is installed at the bottom of the heat preservation tube (314), a plurality of drainage branch pipes (321) are connected between the top of the drainage box (320) and the bottom of the heat preservation tube (314), the top of the drainage branch pipe (321) is connected to the bottom of the corresponding partition chamber (313), a drainage main pipe (322) is fixed to one side of the drainage box (320), and the bottom of the drainage box (320) is connected to one side of the drainage main pipe (322).

8. The multi-stage intelligent steam superheating device according to claim 7 is characterized in that: One end of the exhaust box (310) is connected to one end of a pressure meter (323), the other end of the pressure meter (323) is connected to one end of a temperature detection valve (324), and the other end of the temperature detection valve (324) is connected to an external superheated steam collection end.

9. The multi-stage intelligent steam superheating device according to claim 7, characterized in that: A rotating frame (325) is installed at the bottom and top of the inner side of the air distribution box (215) connected to the exhaust pipe (204); a plurality of rotating shafts (326) are rotatably installed at equal intervals between two adjacent rotating frames (325); a plurality of mixing fans (327) are connected at equal intervals in the middle of the rotating shafts (326); a mixing gear (328) is connected to the top of the rotating shaft (326); a driving rod (329) is slidably installed on one side of the inner top of the air distribution box (215) close to the mixing gear (328); driving teeth (330) are provided at equal intervals on one side of the driving rod (329); the driving teeth (330) mesh with adjacent mixing gears (328); the two ends of the driving rod (329) respectively pass through the two sides of the heat exchange box (202); and one end of the driving rod (329) is connected to the top of an adjacent connecting frame (234).

10. The multi-stage intelligent steam superheating device according to claim 7, characterized in that: The hierarchical control valve (237), the low-level drainage valve (302), the diverter valve (306), the water control valve (318) and the temperature detection valve (324) are all electrically controlled valves, the flow meter (304), the temperature measuring meter (308) and the pressure meter (323) are all electronic meters, the electrically controlled valves, the electronic meters, the drainage pump (307) and the water supply pump (319) are all connected to an external controller via electrical signals, and the input end of the external controller is electrically connected to the output end of an external power supply.

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