Energy-saving device for natural gas kiln

Abstract

The present invention discloses an energy-saving device for a natural gas kiln, which relates to the technical field of natural gas kilns, including a furnace body, an air intake adjustment component, a first flue gas duct, a waste heat recovery component, a second flue gas duct, and a separation component. The furnace body, the waste heat recovery component, the separation component, and the ground are fastened together, the waste heat recovery component is arranged on one side of the furnace body, and the separation component is arranged on the side of the waste heat recovery component away from the furnace body. The air intake adjustment component is connected to the furnace body, one end of the first flue gas duct is fastened to the furnace body, the other end of the first flue gas duct is fastened to the waste heat recovery component, one end of the second flue gas duct is fastened to the waste heat recovery component, and the other end of the second flue gas duct is fastened to the separation component. The present invention adjusts the input amount of air according to the input speed of local natural gas, and the accurate control of the mixing ratio of natural gas and air greatly improves the sufficiency of subsequent combustion and improves energy utilization.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas kilns, and in particular to an energy-saving device for natural gas kilns. Background Art

[0002] A natural gas kiln is a heating device that uses natural gas as fuel and is used in the heating, drying and smelting processes in industrial production. It is an efficient, environmentally friendly and easy-to-control heating method. Compared with traditional coal kilns, natural gas kilns have many advantages. Natural gas combustion produces almost no harmful substances such as dust, smoke and sulfide, and has less pollution to the environment. However, existing natural gas kilns still have certain defects in energy saving and cannot meet the use needs.

[0003] During the use of conventional natural gas kilns, the flue gas contains a large amount of heat, which is discharged along with the flue gas, resulting in a waste of energy. On the other hand, existing natural gas kilns cannot adjust the natural gas input according to the temperature inside the kiln, which will lead to unstable kiln operating temperature and greatly reduce the kiln's working efficiency.

[0004] When natural gas is input into the kiln, it is necessary to mix the natural gas and air first. During the mixing process of the two airflows, one set of pipes has occupied the middle distribution position, and its distribution will be more uniform, while the other set of pipes is set at a position deviating from the center. The airflow output by this set of pipes is difficult to mix evenly with the previous set of airflows. Summary of the invention

[0005] The object of the present invention is to provide an energy-saving device for a natural gas kiln to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an energy-saving device for a natural gas kiln, comprising a furnace body, an air intake adjustment component, a first flue gas pipeline, a waste heat recovery component, a second flue gas pipeline, and a separation component. The furnace body, the waste heat recovery component, the separation component and the ground are fastened together, the waste heat recovery component is arranged on one side of the furnace body, and the separation component is arranged on the side of the waste heat recovery component away from the furnace body. The air intake adjustment component is connected to the furnace body, one end of the first flue gas pipeline is fastened together with the furnace body, the other end of the first flue gas pipeline is fastened together with the waste heat recovery component, one end of the second flue gas pipeline is fastened together with the waste heat recovery component, and the other end of the second flue gas pipeline is fastened together with the separation component. The air intake adjustment component controls the mixture of natural gas and air to enter the furnace body, and the flue gas generated after combustion inside the furnace body is input into the waste heat recovery component from the first flue gas pipeline. The residual heat remaining in the flue gas is used to preheat the input water flow of the external boiler. The flue gas continues to be input into the separation component along the second flue gas pipeline. After the impurities and harmful components in the flue gas are removed, the flue gas is discharged. The present invention adjusts the input amount of air according to the local natural gas input speed, and accurately controls the mixing ratio of natural gas and air, which greatly improves the sufficiency of subsequent combustion and improves energy utilization.

[0007] Furthermore, the air intake regulating assembly includes a mixing unit and a regulating unit. The mixing unit is tightly connected to the outer wall of the furnace body, one end of the regulating unit is connected to the mixing unit, and the other end of the regulating unit is connected to the furnace body. The mixing unit mixes natural gas and air, and the mixed airflow enters the regulating unit. The regulating unit adjusts the input speed of the mixed airflow, and the mixed airflow is input into the furnace body.

[0008] Further, the mixing unit includes a setting cylinder, an upper cavity, a lower cavity, a distribution cavity, a distribution hole, and a distribution rod. The setting cylinder is fastened to the outer wall of the furnace body. The upper cavity, the lower cavity, and the distribution cavity are arranged inside the setting cylinder. The upper cavity is located at the upper side of the setting cylinder, and the lower cavity is located at the lower side of the setting cylinder. The distribution cavity is arranged between the upper cavity and the lower cavity. One end of the distribution hole is connected to the upper cavity, and the other end of the distribution hole is connected to the distribution cavity. One end of the distribution rod extends into the distribution hole, and the other end of the distribution rod is connected to the distribution cavity. There are multiple groups of distribution holes and distribution rods, and the multiple groups of distribution holes and distribution rods are evenly distributed inside the setting cylinder. A first input pipe is arranged on the side wall of the setting cylinder, and a second input pipe is arranged at the bottom of the setting cylinder. The first input pipe is connected to the distribution cavity, and the second input pipe is connected to the lower cavity. The first input pipe is connected to the external natural gas pipeline, and the second input pipe is connected to the external air pipeline. Natural gas is input from the distribution cavity position, and air is input from the lower cavity position. Natural gas enters each distribution hole. According to the difference in air flow speed inside each distribution hole, the state of the distribution rod is changed to adjust the output speed of the air at the distribution rod. The inner wall of the distribution hole on one side away from the distribution rod is provided with spiral patterns, and the natural gas and air dispersed into each distribution hole move along the spiral patterns, further enhancing the mixing effect.

[0009] Furthermore, a flow control component and an air flow hole are arranged inside the distribution rod. The flow control component includes a first arc plate, a second arc plate, a fan-shaped rib, and a thrust spring. Two groups of fan-shaped ribs are arranged, and both groups of fan-shaped ribs are rotatably connected to the distribution rod. Both ends of the thrust spring are respectively fastened to the two groups of fan-shaped ribs. The first arc plate is fastened to one group of fan-shaped ribs, and the second arc plate is fastened to the other group of fan-shaped ribs. The first arc plate and the second arc plate are provided with offset holes, and the air flow holes are cut off by the first arc plate and the second arc plate, and the offset holes and the air flow holes are connected. Since the air pipeline has occupied the middle distribution position during the mixing of the two airflows, its distribution will be more uniform. If sufficient input pressure is set for the air pipeline, each airflow hole can continuously and stably output air. The natural gas pipeline is set at a position off the center, and the kinetic energy of the natural gas input into each distribution hole will be different. For the distribution hole where the natural gas input is relatively concentrated, the pressure from the natural gas on the fan-shaped retaining edge will also increase, the thrust spring will be squeezed, the overlapping area between the first arc plate and the second arc plate will increase, and the dislocation holes of the first arc plate and the second arc plate are locally connected. When the overlapping area of ​​the two increases, the connection area of ​​the dislocation holes will also increase, the flow aperture of the air will increase, and the input amount of the air will also increase accordingly. The setting of the distribution hole and the distribution rod of the present invention improves the mixing uniformity of natural gas and air on the one hand, so that a small amount of air can be directly diffused at the center of the small amount of natural gas. On the other hand, the present invention can also adjust the input amount of air according to the input speed of the local natural gas, and the accurate control of the mixing ratio of natural gas and air greatly improves the sufficiency of subsequent combustion.

[0010] Furthermore, the regulating unit includes an input pipe, an regulating block, a circulation hole, a lifting chamber, an airflow chamber, and a lifting block. One end of the input pipe is connected to the mixing unit, and the other end of the input pipe is connected to the regulating block. The circulation hole, the lifting chamber, and the airflow chamber are arranged inside the regulating block. One end of the circulation hole is connected to the input pipe, and the other end of the circulation hole is connected to the inside of the furnace body. The lifting chamber is arranged at the bottom of the circulation hole. The lifting block and the lifting chamber are slidably connected. The airflow chamber is connected to the bottom of the lifting chamber. A heat conduction plate is arranged on one side of the airflow chamber, and the heat conduction plate is close to the inner wall of the furnace body. When the mixed air flow passes through the input pipe, the air flow will enter the furnace body from the regulating block. The temperature inside the furnace body is fed back to the heat conduction plate, driving the temperature of the gas inside the air flow cavity to change. When the temperature of the furnace body is too high, the gas inside the air flow cavity expands, and the expanded gas is input into the lifting cavity. The lifting block will be lifted up by the gas, and part of the flow hole will be blocked by the lifting block, reducing the input amount of the mixed gas. When the temperature inside the furnace body is low, the lifting block will reset under the action of gravity. After the lifting block is reset, the flow hole will resume to be unobstructed, and the input amount of the mixed gas will increase. The present invention realizes stable regulation of the internal temperature of the kiln by automatically adjusting the input amount of the mixed gas.

[0011] Furthermore, the waste heat recovery component includes a support platform, a heat exchange bin, a centralized cavity, a layered cavity, and a heat exchange unit. The support platform is firmly connected to the ground, the heat exchange bin is firmly connected to the support platform, one end of the heat exchange bin is firmly connected to the first air inlet pipe, and the other end of the heat exchange bin is firmly connected to the second air inlet pipe. The centralized cavity and the layered cavity are arranged inside the heat exchange bin. There are two groups of centralized cavities, and the two groups of centralized cavities are arranged on both sides of the layered cavity respectively. The first air inlet pipe is connected to one group of centralized cavities, and the second air inlet pipe is connected to the other group of centralized cavities. There are multiple groups of layered cavities, and the multiple groups of layered cavities are evenly distributed along the centralized cavity. One end of the heat exchange unit is arranged outside the heat exchange bin, and the other end of the heat exchange unit is arranged inside the layered cavity. The flue gas enters the heat exchange bin, and the flue gas is distributed to each layered cavity by the centralized cavity. The heat exchange unit carries external water through the layered cavity, and the external water exchanges heat with the flue gas, which greatly improves the energy utilization rate of the kiln.

[0012] Furthermore, the heat exchange unit includes a first diverter block, a second diverter block, a central pipe, and a dispersion pipe. The first diverter block, the second diverter block and the support platform are fastened together. The first diverter block and the second diverter block are respectively located on both sides of the same side of the heat exchange chamber. There are multiple groups of central pipes, and the multiple groups of central pipes are evenly distributed along the first diverter block and the second diverter block. Each group of central pipes is provided with two pipes, one central pipe is connected to the first diverter block, and the other central pipe is connected to the second diverter block. The first diverter block is connected to an external boiler water supply pipeline, and the second diverter block is connected to an external water supply pipeline. Both ends of the dispersion pipe are connected to the two central pipes of the same group. The dispersion pipe is located in the stratified cavity, and the dispersion pipe is evenly distributed along the central pipe. The external water supply pipeline of the present invention inputs water, and the water enters each dispersion pipe through the central pipe. The water flow direction inside the dispersion pipe is opposite to the direction of the flue gas. The water flow continuously exchanges heat with the flue gas, and the residual heat of the flue gas is absorbed by the water. The water that absorbs the heat of the flue gas is then transported from the first diversion block to the external boiler. This structure greatly improves the heat exchange efficiency of the heat exchange unit.

[0013] Furthermore, the separation assembly includes a separation tower, a filter layer, and a reaction layer. The separation tower is firmly connected to the ground. The filter layer and the reaction layer are arranged inside the separation tower. The filter layer is arranged on the upper side of the reaction layer. The top of the separation tower is connected to the second flue gas duct. An exhaust duct is arranged at the bottom of the separation tower. The filter layer and the reaction layer belong to conventional technical means in this field, and the specific structure is not described. The flue gas enters the separation tower through the second flue gas duct, and the flue gas passes through the filter layer and the reaction layer in turn. Impurities in the flue gas are filtered by the filter layer, and harmful components in the flue gas are absorbed by the reaction layer.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the arrangement of the distribution holes and the distribution rods of the present invention improves the mixing uniformity of natural gas and air on the one hand, so that a small amount of air can be directly diffused at the center of the small amount of natural gas. On the other hand, the present invention can also adjust the input amount of air according to the input speed of local natural gas, and the accurate control of the mixing ratio of natural gas and air greatly improves the sufficiency of subsequent combustion. After the mixed airflow passes through the input pipe, the airflow will enter the furnace body from the regulating block, and the temperature inside the furnace body will be fed back to the heat conduction plate, driving the temperature of the gas inside the airflow cavity to change. When the temperature of the furnace body is too high, the gas inside the airflow cavity expands, and the expanded gas is input into the lifting cavity. The lifting block will be lifted by the gas, and the circulation hole will be partially blocked by the lifting block, and the input amount of the mixed gas will be reduced. When the temperature inside the furnace body is low, the lifting block will reset under the action of gravity, and the circulation hole will resume unobstructed after the lifting block is reset, and the input amount of the mixed gas will increase. The present invention realizes the stable regulation of the temperature inside the kiln through the automatic regulation of the input amount of the mixed gas. The external water supply pipeline of the present invention inputs water, and the water enters each dispersion pipe through the central pipe. The water flow direction inside the dispersion pipe is opposite to the direction of the flue gas. The water flow continuously exchanges heat with the flue gas, and the residual heat of the flue gas is absorbed by the water. The water that absorbs the heat of the flue gas is then transported from the first diversion block to the external boiler. This structure greatly improves the heat exchange efficiency of the heat exchange unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 yes Figure 1 A local enlarged view of point A;

[0018] Figure 3 is a three-dimensional structural diagram of the waste heat recovery component of the present invention;

[0019] Figure 4 It is a schematic diagram of the internal structure of the heat exchange bin of the present invention;

[0020] Figure 5 It is a sectional view of the local structure of the setting tube of the present invention;

[0021] Figure 6 is a partial structural cross-sectional view of the distribution rod of the present invention;

[0022] Figure 7 is a three-dimensional structural diagram of the separation component of the present invention;

[0023] Figure 8 It is a schematic diagram of the internal structure of the separation tower of the present invention;

[0024] In the figure: 1-furnace body, 2-air intake adjustment component, 21-mixing unit, 211-setting cylinder, 212-upper cavity, 213-lower cavity, 214-distribution cavity, 215-distribution hole, 216-distribution rod, 2161-air flow hole, 2162-first arc plate, 2163-second arc plate, 2164-sector rib, 2165-thrust spring, 2166-displacement hole, 22-first air intake pipe, 23-second air intake pipe, 24-adjustment unit, 241-input pipe, 242-adjusting block, 243-circulation hole, 244-lifting chamber, 245-airflow chamber, 246-lifting block, 3-first flue gas duct, 4-waste heat recovery component, 41-support platform, 42-heat exchange bin, 43-concentrating chamber, 44-stratified chamber, 45-heat exchange unit, 451-first diversion block, 452-second diversion block, 453-concentrating pipe, 454-dispersing pipe, 5-second flue gas duct, 6-separation component, 61-separation tower, 62-filtration layer, 63-reaction layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1As shown, an energy-saving device for a natural gas kiln includes a furnace body 1, an air intake regulating component 2, a first flue gas duct 3, a waste heat recovery component 4, a second flue gas duct 5, and a separation component 6. The furnace body 1, the waste heat recovery component 4, the separation component 6 are fastened to the ground, the waste heat recovery component 4 is arranged on one side of the furnace body 1, and the separation component 6 is arranged on the side of the waste heat recovery component 4 away from the furnace body 1. The air intake regulating component 2 is connected to the furnace body 1, one end of the first flue gas duct 3 is fastened to the furnace body 1, the other end of the first flue gas duct 3 is fastened to the waste heat recovery component 4, one end of the second flue gas duct 5 is fastened to the waste heat recovery component 4, and the other end of the second flue gas duct 5 is fastened to the separation component 6. The air intake regulating component 2 controls the mixture of natural gas and air to enter the furnace body 1. The flue gas generated after the combustion inside the furnace body 1 is input into the waste heat recovery component 4 from the first flue gas pipe 3. The residual heat remaining in the flue gas is used to preheat the input water flow of the external boiler. The flue gas continues to be input into the separation component 6 along the second flue gas pipe 5. After the impurities and harmful components in the flue gas are removed, the flue gas is discharged. The present invention adjusts the input amount of air according to the input speed of local natural gas, and the accurate control of the mixing ratio of natural gas and air greatly improves the sufficiency of subsequent combustion and improves energy utilization.

[0027] like Figure 1 , Figure 2 As shown, the air intake regulating assembly 2 includes a mixing unit 21 and a regulating unit 24. The mixing unit 21 is tightly connected to the outer wall of the furnace body 1. One end of the regulating unit 24 is connected to the mixing unit 21, and the other end of the regulating unit 24 is connected to the furnace body 1. The mixing unit 21 mixes natural gas and air, and the mixed airflow enters the regulating unit 24. The regulating unit 24 adjusts the input speed of the mixed airflow, and the mixed airflow is input into the furnace body 1.

[0028] like Figure 5 , Figure 6As shown, the mixing unit 21 includes a setting cylinder 211, an upper cavity 212, a lower cavity 213, a distribution cavity 214, a distribution hole 215, and a distribution rod 216. The setting cylinder 211 is fastened to the outer wall of the furnace body 1, the upper cavity 212, the lower cavity 213, and the distribution cavity 214 are arranged inside the setting cylinder 211, the upper cavity 212 is located on the upper side of the setting cylinder 211, the lower cavity 213 is located on the lower side of the setting cylinder 211, the distribution cavity 214 is arranged between the upper cavity 212 and the lower cavity 213, one end of the distribution hole 215 is connected to the upper cavity 212, and the other end of the distribution hole 215 is connected to the upper cavity 212. The end of the distribution rod 216 is connected to the distribution chamber 214, one end of the distribution rod 216 extends into the distribution hole 215, and the other end of the distribution rod 216 is connected to the distribution chamber 214. There are multiple groups of distribution holes 215 and distribution rods 216, and the multiple groups of distribution holes 215 and distribution rods 216 are evenly distributed inside the setting tube 211. A first input pipe is provided on the side wall of the setting tube 211, and a second input pipe is provided at the bottom of the setting tube 211. The first input pipe is connected to the distribution chamber 214, the second input pipe is connected to the lower cavity 213, the first input pipe is connected to an external natural gas pipeline, and the second input pipe is connected to an external air pipeline. Natural gas is input from the position of the distribution chamber 214, and air is input from the position of the lower cavity 213. Natural gas enters each distribution hole 215. According to the difference in the air flow speed inside each distribution hole 215, the state of the distribution rod 216 is changed, and the output speed of the air at the distribution rod 216 is adjusted. The inner wall of the distribution hole 215 on one side away from the distribution rod 216 is provided with spiral patterns, and the natural gas and air dispersed into each distribution hole 215 move along the spiral patterns, further enhancing the mixing effect.

[0029] like Figure 6As shown, a flow control component and an air flow hole 2161 are provided inside the distribution rod 216. The flow control component includes a first arc plate 2162, a second arc plate 2163, a fan-shaped rib 2164, and a thrust spring 2165. Two groups of fan-shaped ribs 2164 are provided, and both groups of fan-shaped ribs 2164 are rotatably connected to the distribution rod 216. Both ends of the thrust spring 2165 are fastened to the two groups of fan-shaped ribs 2164 respectively. The first arc plate 2162 is fastened to one group of fan-shaped ribs 2164, and the second arc plate 2163 is fastened to the other group of fan-shaped ribs 2164. The first arc plate 2162 and the second arc plate 2163 are provided with offset holes 2166. The air flow hole 2161 is cut off by the first arc plate 2162 and the second arc plate 2163, and the offset holes 2166 and the air flow hole 2161 are connected. Since the air pipeline has occupied the middle distribution position during the mixing of the two airflows, its distribution will be more uniform. If sufficient input pressure is set for the air pipeline, each airflow hole 2161 can continuously and stably output air. However, the natural gas pipeline is set at a position off the center, and the kinetic energy of the natural gas input into each distribution hole 215 will be different. For the distribution hole 215 where the natural gas input is relatively concentrated, the pressure from the natural gas on the fan-shaped retaining edge 2164 will also increase, and the thrust spring 2165 will be squeezed. The overlapping area between the first arc plate 2162 and the second arc plate 2163 will increase, and the offset holes 2166 of the first arc plate 2162 and the second arc plate 2163 are partially connected. When the overlapping area between the two increases, the connection area of ​​the offset holes 2166 will also increase, the air circulation aperture will increase, and the air input amount will also increase accordingly. The arrangement of the distribution holes 215 and the distribution rods 216 of the present invention improves the mixing uniformity of natural gas and air, so that a small amount of air can be directly diffused at the center of the small amount of natural gas. On the other hand, the present invention can also adjust the air input amount according to the local natural gas input speed, and the accurate control of the natural gas and air mixing ratio greatly improves the sufficiency of subsequent combustion.

[0030] like Figure 2As shown, the regulating unit 24 includes an input pipe 241, an regulating block 242, a flow hole 243, a lifting chamber 244, an airflow chamber 245, and a lifting block 246. One end of the input pipe 241 is connected to the mixing unit 21, and the other end of the input pipe 241 is connected to the regulating block 242. The flow hole 243, the lifting chamber 244, and the airflow chamber 245 are arranged inside the regulating block 242. One end of the flow hole 243 is connected to the input pipe 241, and the other end of the flow hole 243 is connected to the inside of the furnace body 1. The lifting chamber 244 is arranged at the bottom of the flow hole 243. The lifting block 246 is slidably connected to the lifting chamber 244. The airflow chamber 245 is connected to the bottom of the lifting chamber 244. A heat conducting plate is arranged on one side of the airflow chamber 245, and the heat conducting plate is close to the inner wall of the furnace body 1. After the mixed air flow passes through the input pipe, the air flow will enter the furnace body 1 from the regulating block 242. The temperature inside the furnace body 1 is fed back to the heat conduction plate, driving the temperature of the gas inside the air flow chamber 245 to change. When the temperature of the furnace body 1 is too high, the gas inside the air flow chamber 245 expands, and the expanded gas is input into the lifting chamber 244. The lifting block 246 will be lifted up by the gas, and part of the space of the flow hole 243 will be blocked by the lifting block 246, and the input amount of the mixed gas will be reduced. When the temperature inside the furnace body 1 is low, the lifting block 246 will be reset under the action of gravity. After the lifting block 246 is reset, the flow hole 243 will be unobstructed again, and the input amount of the mixed gas will increase. The present invention realizes stable regulation of the internal temperature of the kiln through automatic regulation of the input amount of the mixed gas.

[0031] like Figure 3 As shown, the waste heat recovery component 4 includes a support platform 41, a heat exchange bin 42, a concentrated cavity 43, a layered cavity 44, and a heat exchange unit 45. The support platform 41 is fastened to the ground, the heat exchange bin 42 is fastened to the support platform 41, one end of the heat exchange bin 42 is fastened to the first air inlet pipe 22, and the other end of the heat exchange bin 42 is fastened to the second air inlet pipe 23. The concentrated cavity 43 and the layered cavity 44 are arranged inside the heat exchange bin 42. There are two groups of concentrated cavities 43, and the two groups of concentrated cavities 43 are respectively arranged on both sides of the layered cavity 44. The first air inlet pipe 22 is connected to one group of concentrated cavities 43, and the second air inlet pipe 23 is connected to the other group of concentrated cavities 43. There are multiple groups of layered cavities 44, and the multiple groups of layered cavities 44 are evenly distributed along the concentrated cavity 43. One end of the heat exchange unit 45 is arranged outside the heat exchange bin 42, and the other end of the heat exchange unit 45 is arranged inside the layered cavity 44. The flue gas enters the heat exchange chamber 42 and is distributed to each stratified chamber 44 by the concentrated chamber 43. The heat exchange unit 45 carries the external water through the stratified chamber 44. The external water and the flue gas exchange heat, which greatly improves the energy utilization rate of the kiln.

[0032] like Figure 3 , Figure 4As shown, the heat exchange unit 45 includes a first diverter block 451, a second diverter block 452, a centralizing pipe 453, and a dispersion pipe 454. The first diverter block 451, the second diverter block 452 and the support platform 41 are fastened together. The first diverter block 451 and the second diverter block 452 are respectively located on both sides of the same side of the heat exchange chamber 42. There are multiple groups of centralizing pipes 453, and the multiple groups of centralizing pipes 453 are evenly distributed along the first diverter block 451 and the second diverter block 452. Each group of centralizing pipes 453 is provided with two pipes, one centralizing pipe 453 is connected to the first diverter block 451, and the other centralizing pipe 453 is connected to the second diverter block 452. The first diverter block 451 is connected to an external boiler water supply pipeline, and the second diverter block 452 is connected to an external water supply pipeline. Both ends of the dispersion pipe 454 are connected to the two centralizing pipes 453 of the same group. The dispersion pipe 454 is located in the stratified cavity 44, and the dispersion pipe 454 is evenly distributed along the centralizing pipe 453. The external water supply pipeline of the present invention inputs water, and the water enters each dispersion pipe 454 through the central pipe 453. The water flow direction inside the dispersion pipe 454 is opposite to the direction of the flue gas. The water flow continuously exchanges heat with the flue gas, and the residual heat of the flue gas is absorbed by the water. The water that absorbs the heat of the flue gas is then transported to the external boiler from the first diversion block 451. This structure greatly improves the heat exchange efficiency of the heat exchange unit 45.

[0033] like Figure 7 , Figure 8 As shown, the separation assembly 6 includes a separation tower 61, a filter layer 62, and a reaction layer 63. The separation tower 61 is fastened to the ground, the filter layer 62 and the reaction layer 63 are arranged inside the separation tower 61, the filter layer 62 is arranged on the upper side of the reaction layer 63, the top of the separation tower 61 is connected to the second flue gas duct 5, and an exhaust pipe is arranged at the bottom of the separation tower 61. The filter layer 62 and the reaction layer 63 belong to conventional technical means in this field, and the specific structure is not described. The flue gas enters the separation tower 61 through the second flue gas duct 5, and the flue gas passes through the filter layer 62 and the reaction layer 63 in turn. The impurities in the flue gas are filtered by the filter layer 62, and the harmful components in the flue gas are absorbed by the reaction layer 63.

[0034] The working principle of the present invention is as follows: natural gas is input from the position of the distribution chamber 214, and air is input from the position of the lower chamber 213. Natural gas enters each distribution hole 215. According to the difference in the air flow speed inside each distribution hole 215, the state of the distribution rod 216 is changed, and the output speed of the air at the distribution rod 216 is adjusted. The mixed gas enters the regulating unit 24. After the mixed air flow passes through the input pipe 241, the air flow will enter the furnace body 1 from the regulating block 242. The temperature inside the furnace body 1 is fed back to the heat conduction plate, driving the temperature of the gas inside the air flow chamber 245 to change. When the temperature of the furnace body 1 is too high, the gas inside the air flow chamber 245 expands, and the expanded gas is input into the lifting chamber 244. The lifting block 246 will be lifted by the gas, and the flow hole 243 will be partially blocked by the lifting block 246. The input amount of the mixed gas is reduced. When the temperature inside the furnace body 1 is low, the lifting block 246 will be reset under the action of gravity. After the lifting block 246 is reset, the flow hole 243 is restored to be unblocked, and the input amount of the mixed gas is increased. The mixed gas enters the furnace body 1, and the smoke after combustion is discharged from the first smoke pipe 3. The smoke enters the heat exchange chamber 42, and the smoke is distributed to each stratified chamber 44 by the concentrated chamber 43. The heat exchange unit 45 carries the external water body through the stratified chamber 44, and the external water body and the smoke exchange heat. The smoke after the heat exchange is completed is discharged from the second smoke pipe 5. The smoke enters the separation tower 61 through the second smoke pipe 5, and the smoke passes through the filter layer 62 and the reaction layer 63 in turn. The impurities in the smoke are filtered by the filter layer 62, and the harmful components in the smoke are absorbed by the reaction layer 63.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is 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. An energy-saving device for a natural gas kiln, characterized in that: The energy-saving device comprises a furnace body (1), an air intake adjustment component (2), a first flue gas duct (3), a waste heat recovery component (4), a second flue gas duct (5), and a separation component (6); the furnace body (1), the waste heat recovery component (4), and the separation component (6) are fastened to the ground; the waste heat recovery component (4) is arranged on one side of the furnace body (1); the separation component (6) is arranged on a side of the waste heat recovery component (4) away from the furnace body (1); the air intake adjustment component (2) is connected to the furnace body (1); one end of the first flue gas duct (3) is fastened to the furnace body (1); the other end of the first flue gas duct (3) is fastened to the waste heat recovery component (4); one end of the second flue gas duct (5) is fastened to the waste heat recovery component (4); and the other end of the second flue gas duct (5) is fastened to the separation component (6); The air intake regulating assembly (2) comprises a mixing unit (21) and a regulating unit (24); the mixing unit (21) is tightly connected to the outer wall of the furnace body (1); one end of the regulating unit (24) is connected to the mixing unit (21), and the other end of the regulating unit (24) is connected to the furnace body (1); The mixing unit (21) comprises a setting cylinder (211), an upper cavity (212), a lower cavity (213), a distribution cavity (214), a distribution hole (215), and a distribution rod (216); the setting cylinder (211) is tightly connected to the outer wall of the furnace body (1); the upper cavity (212), the lower cavity (213), and the distribution cavity (214) are arranged inside the setting cylinder (211); the upper cavity (212) is located on the upper side of the setting cylinder (211); the lower cavity (213) is located on the lower side of the setting cylinder (211); the distribution cavity (214) is arranged between the upper cavity (212) and the lower cavity (213); one end of the distribution hole (215) is connected to the upper cavity (212); and the distribution hole (215) is connected to the upper cavity (212). 15) and the other end is connected to the distribution chamber (214); one end of the distribution rod (216) extends into the distribution hole (215); the other end of the distribution rod (216) is connected to the distribution chamber (214); the distribution holes (215) and the distribution rod (216) are provided in multiple groups; the multiple groups of distribution holes (215) and the distribution rod (216) are evenly distributed inside the setting tube (211); a first input pipe is provided on the side wall of the setting tube (211); a second input pipe is provided at the bottom of the setting tube (211); the first input pipe is connected to the distribution chamber (214); the second input pipe is connected to the lower chamber (213); the first input pipe is connected to an external natural gas pipeline; and the second input pipe is connected to an external air pipeline; The distribution rod (216) is provided with a flow control component and an air flow hole (2161) inside. The flow control component comprises a first arc plate (2162), a second arc plate (2163), a fan-shaped rib (2164), and a thrust spring (2165). The fan-shaped rib (2164) is provided with two groups. Both groups of fan-shaped ribs (2164) are rotatably connected to the distribution rod (216). Both ends of the thrust spring (2165) are respectively fastened to the two groups of fan-shaped ribs (2164). The first arc plate (2162) is fastened to a group of fan-shaped retaining edges (2164), and the second arc plate (2163) is fastened to another group of fan-shaped retaining edges (2164). The first arc plate (2162) and the second arc plate (2163) are provided with offset holes (2166), the air flow hole (2161) is cut off by the first arc plate (2162) and the second arc plate (2163), and the offset hole (2166) and the air flow hole (2161) are connected.

2. The energy-saving device for a natural gas kiln according to claim 1, characterized in that: The regulating unit (24) comprises an input pipe (241), a regulating block (242), a circulation hole (243), a lifting chamber (244), an airflow chamber (245), and a lifting block (246); one end of the input pipe (241) is in communication with the mixing unit (21), and the other end of the input pipe (241) is in communication with the regulating block (242); the circulation hole (243), the lifting chamber (244), and the airflow chamber (245) are arranged inside the regulating block (242); one end of the circulation hole (243) is in communication with the input pipe (241), and the other end of the circulation hole (243) is in communication with the inside of the furnace body (1); the lifting chamber (244) is arranged at the bottom of the circulation hole (243); the lifting block (246) and the lifting chamber (244) are slidably connected; the airflow chamber (245) is in communication with the bottom of the lifting chamber (244); a heat conduction plate is arranged on one side of the airflow chamber (245), and the heat conduction plate is close to the inner wall of the furnace body (1).

3. The energy-saving device for a natural gas kiln according to claim 2, characterized in that: The waste heat recovery component (4) comprises a support platform (41), a heat exchange bin (42), a central cavity (43), a stratified cavity (44), and a heat exchange unit (45); the support platform (41) is firmly connected to the ground; the heat exchange bin (42) is firmly connected to the support platform (41); one end of the heat exchange bin (42) is firmly connected to the first air inlet pipe (22); the other end of the heat exchange bin (42) is firmly connected to the second air inlet pipe (23); the central cavity (43) and the stratified cavity (44) are arranged inside the heat exchange bin (42); The concentrated cavity (43) is provided with two groups, and the two groups of concentrated cavities (43) are respectively arranged on both sides of the stratified cavity (44); the first air inlet pipe (22) is connected to one group of concentrated cavities (43), and the second air inlet pipe (23) is connected to the other group of concentrated cavities (43); the stratified cavity (44) is provided with multiple groups, and the multiple groups of stratified cavities (44) are evenly distributed along the concentrated cavities (43); one end of the heat exchange unit (45) is arranged outside the heat exchange chamber (42), and the other end of the heat exchange unit (45) is arranged inside the stratified cavity (44).

4. The energy-saving device for a natural gas kiln according to claim 3, characterized in that: The heat exchange unit (45) comprises a first diverter block (451), a second diverter block (452), a concentrating pipe (453), and a dispersing pipe (454); the first diverter block (451), the second diverter block (452), and the support platform (41) are tightly connected; the first diverter block (451) and the second diverter block (452) are respectively located on both sides of the same side of the heat exchange chamber (42); a plurality of concentrating pipes (453) are arranged; the plurality of concentrating pipes (453) are evenly distributed along the first diverter block (451) and the second diverter block (452); each concentrating pipe (453) is provided with a plurality of concentrating pipes (453); Two centralizing pipes (453) are provided in the group, one centralizing pipe (453) is connected to the first diverter block (451), and the other centralizing pipe (453) is connected to the second diverter block (452). The first diverter block (451) is connected to the external boiler water supply pipeline, and the second diverter block (452) is connected to the external water supply pipeline. Both ends of the dispersion pipe (454) are connected to the two centralizing pipes (453) of the same group. The dispersion pipe (454) is located in the stratified cavity (44), and the dispersion pipes (454) are evenly distributed along the centralizing pipe (453).

5. The energy-saving device for a natural gas kiln according to claim 4, characterized in that: The separation assembly (6) comprises a separation tower (61), a filter layer (62), and a reaction layer (63); the separation tower (61) is firmly connected to the ground; the filter layer (62) and the reaction layer (63) are arranged inside the separation tower (61); the filter layer (62) is arranged on the upper side of the reaction layer (63); the top of the separation tower (61) is connected to the second flue gas duct (5); and the bottom of the separation tower (61) is provided with an exhaust duct.

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