High-safety waste heat boiler device
By introducing temperature regulation and multi-stage waste heat recovery components into the waste heat boiler unit, the problem of high-temperature flue gas overheating at the tail end of the kiln was solved, achieving safe and efficient waste heat recovery and improving the safety and heat exchange efficiency of the equipment.
Patent Information
- Application Number
- CN202423119845.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-17
AI Technical Summary
When existing waste heat boilers process high-temperature flue gas at the tail end of kilns, the temperature often exceeds the equipment's design range, leading to damage to key components and affecting safety and lifespan.
A high-safety waste heat boiler device is designed, comprising a flue gas passage, a waste heat recovery component, and a temperature regulation component. By setting through holes and temperature detection components in the flue gas passage, cold air is introduced to regulate the flue gas temperature. Combined with a multi-stage waste heat recovery component and a guide plate structure, the flue gas temperature is ensured to be within a safe range.
It achieves efficient waste heat recovery, avoids high-temperature damage, improves the safety and stability of the boiler, and enhances heat exchange efficiency and energy utilization.
Smart Images
Figure CN223691039U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a boiler technical field especially relates to a high security waste heat boiler device. BACKGROUND
[0002] In modern industrial production, kiln as high temperature process equipment is widely used in metallurgy, building materials, chemical industry and other industries. In the high temperature combustion process of kiln, a large amount of high temperature flue gas will be produced, and waste heat boiler as an important heat recovery equipment plays a crucial role in kiln flue gas waste heat utilization.
[0003] However, the existing waste heat boiler in the process of handling kiln tail high temperature flue gas, especially after the high temperature flue gas passes through the superheater, the convection tube bundle and the H type economizer, the high temperature flue gas is purified by the dust collector and discharged into the chimney, the temperature of the high temperature flue gas often exceeds the temperature range designed by the equipment. This overtemperature phenomenon is easy to cause the damage of the superheater and other key components, affect the safe operation of the boiler, shorten the service life of the equipment, and even may cause safety accidents. SUMMARY
[0004] The purpose of the present application is to provide a high security waste heat boiler device to solve the problem of kiln tail high temperature flue gas damaging the waste heat boiler in the prior art.
[0005] To achieve this purpose, the following technical solutions are adopted in the present application:
[0006] The present application provides a high security waste heat boiler device, which comprises a rack, a waste heat recovery assembly, a temperature adjusting assembly and a plurality of baffles, wherein:
[0007] The baffles are fixedly installed on the rack, and the side ends of the plurality of adjacent baffles are fixedly connected to form a flue gas passage, the flue gas passage is configured to transport high temperature flue gas, the waste heat recovery assembly is installed in the flue gas passage, and the waste heat recovery assembly is configured to recover the heat of the high temperature flue gas;
[0008] The high temperature flue gas enters from the inlet end of the flue gas passage, a plurality of through holes are formed in the bottom surface of the inlet end of the flue gas passage, the temperature adjusting assembly communicates with the flue gas passage through the through holes, and the temperature adjusting assembly is configured to introduce external cold air to adjust the temperature of the high temperature flue gas entering the flue gas passage to a specified range.
[0009] Optionally, the temperature adjusting assembly comprises a ventilation pipeline, a temperature detecting assembly and a switch piece, the outlet of the ventilation pipeline communicates with the flue gas passage through the through hole, the ventilation pipeline is configured to transport cold air to the flue gas passage, the switch piece is installed in the flue gas passage, and the switch piece is configured to open or close the air inlet of the ventilation pipeline.
[0010] The temperature detection assembly is connected with the switch piece, and is configured to detect the temperature of the high-temperature flue gas and control opening or closing of the switch piece according to the temperature information.
[0011] Optionally, the through holes are arranged uniformly along the first direction.
[0012] Optionally, a first guide plate is fixedly installed between the inlet end and the through hole at the bottom of the flue gas channel, the first guide plate is inclined close to the through hole, and the first guide plate is configured to guide the high-temperature flue gas and guide the cold air entering the flue gas channel.
[0013] Optionally, a heat preservation plate is fixedly installed on the inner wall of the flue gas channel.
[0014] Optionally, the waste heat recovery assembly comprises a first recovery component, a second recovery component and a third recovery component, the first recovery component is installed in the front section of the flue gas channel, the second recovery component is installed in the middle section of the flue gas channel, and the third recovery component is installed in the rear section of the flue gas channel.
[0015] Optionally, the first recovery component is a superheater, and the outlet end of the superheater is in communication with the second recovery component.
[0016] The second recovery component comprises an upper header, a lower header, an inlet pipe bundle and an outlet pipe bundle, two ends of the inlet pipe bundle and the outlet pipe bundle are in communication with the upper header and the lower header respectively, the outlet end of the superheater is in communication with the upper header, the steam discharged by the superheater enters the upper header, and then enters the lower header and the outlet pipe bundle in sequence through the inlet pipe bundle, and reenters the upper header through the outlet pipe bundle.
[0017] Optionally, a second guide plate and a third guide plate are fixedly installed on the inner wall of the flue gas channel, the second guide plate and the third guide plate are inclined towards the lower header, the second guide plate and the third guide plate are oppositely arranged, the third guide plate is located above the second guide plate, the second guide plate is in contact with the inlet pipe bundle, and the third guide plate is in contact with the outlet pipe bundle.
[0018] Optionally, the upper header comprises an inlet header and an outlet header, the inlet header and the outlet header are disconnected by a partition plate, the inlet header is in communication with the outlet end of the superheater and the inlet pipe bundle respectively, and the outlet header is in communication with the outlet pipe bundle.
[0019] Optionally, the third recovery component is an H-shaped economizer.
[0020] Compared with the prior art, the high-safety waste heat boiler device has the following advantages:
[0021] 1) By arranging the waste heat recovery component and the temperature adjusting component in the flue gas channel, not only the waste heat of the high-temperature flue gas is recovered to save energy, but also the damage of the high temperature of the flue gas to the boiler components is avoided through the temperature adjusting component, so that the safety and reliability of the device operation are ensured.
[0022] 2) Through the cooperation of the ventilation pipe, the temperature detection assembly and the switch, the introduction of cold air is accurately controlled, the flue gas temperature is adjusted to a safe range, the damage of overheating to the superheater is avoided, and the overall safety performance and stability of the boiler are improved.
[0023] 3) Through the cooperation of the second guide plate and the third guide plate, uniform contact of the flue gas with the inlet pipe bundle and the outlet pipe bundle is ensured, the heat exchange efficiency of the high-temperature flue gas and the pipe bundle is guaranteed, the contact time of the high-temperature flue gas and the pipe bundle is increased, and the waste heat recovery effect is further improved. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present application, the drawings needed to be used in the background and embodiment description of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the contents of the embodiments of the present application and the drawings by those skilled in the art without creative labor.
[0025] Figure 1 is a front view of the high-safety waste heat boiler device provided by the embodiments of the present application;
[0026] Figure 2 is a side view of the high-safety waste heat boiler device provided by the embodiments of the present application;
[0027] Figure 3 is a partial top view of the ventilation pipe of the high-safety waste heat boiler device provided by the embodiments of the present application;
[0028] Figure 4 is Figure 1 is an enlarged view of position A in FIG. DETAILED DESCRIPTION
[0029] For the purpose of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. There can, of course, be many embodiments of the application and the specific embodiments described herein are not intended to limit the scope of the application but rather they are intended to provide exemplary embodiments of the application. The described embodiments of the present application are directed to overcoming one or more of the disadvantages set forth above. It should be stressed that the specification is presented for purposes of illustration to describe embodiments of the present application. The application, both as to organization and content, is thus contemplated to be illustrative in nature. It is therefore contemplated that the specific arrangements set forth are not the only arrangements that are possible to implement the claimed application. Any and all modifications, variations, combinations or equivalents that fall within the scope of the claimed application are intended to be embraced by the application. It is intended that the scope of the application encompass all technical equivalents that operate like the claimed application to produce the same technical result. The term "fixedly attached" means that the component is attached to another component such that the two components move together as a single unit. The term "connected" means that the component is either fixedly attached to another component or is detachably attached to another component. The terms "vertical", "horizontal", "left", "right", and the like as used herein are made only for purposes of illustration, and are not intended to be limiting. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.
[0030] Referring to the drawings Figures 1 to 4 As shown in the drawings, the high-safety waste heat boiler device provided by the embodiments of the present application comprises a rack 10, a waste heat recovery assembly 20, a temperature adjusting assembly 30 and a plurality of baffles 40, wherein:
[0031] The baffles 40 are fixedly installed on the rack 10, and a plurality of adjacent baffles 40 are fixedly connected at the side ends to form a flue gas passage 50, the flue gas passage 50 is configured to transport high-temperature flue gas, and the waste heat recovery assembly 20 is installed in the flue gas passage 50, and the waste heat recovery assembly 20 is configured to recover the heat of the high-temperature flue gas.
[0032] The high-temperature flue gas enters from the inlet end of the flue gas passage 50, a plurality of through holes are formed in the bottom surface of the inlet end of the flue gas passage 50, the temperature adjusting assembly 30 is in communication with the flue gas passage 50 through the through holes, and the temperature adjusting assembly 30 is configured to introduce external cooling air to adjust the temperature of the high-temperature flue gas entering the flue gas passage 50 to a specified range.
[0033] By arranging the waste heat recovery assembly 20 and the temperature adjusting assembly 30 in the flue gas passage 50, not only the waste heat of the high-temperature flue gas is recovered to save energy, but also the damage of the high temperature of the flue gas to the boiler components is avoided by the temperature adjusting assembly 30, thereby ensuring the safety and reliability of the device operation.
[0034] In an embodiment, the temperature adjusting assembly 30 comprises a ventilation pipe 31, a temperature detection assembly, and a switch piece, the outlet of the ventilation pipe 31 is communicated with the flue gas channel 50 through the through hole, the ventilation pipe 31 is configured to transport cold air to the flue gas channel 50, and the switch piece is installed in the flue gas channel 50 and is configured to open or close the air inlet of the ventilation pipe.
[0035] The temperature detection assembly is connected with the switch piece, and the temperature detection assembly is configured to detect the temperature of the high-temperature flue gas and control the opening or closing of the switch piece according to the temperature information.
[0036] Through the cooperation of the ventilation pipe 31, the temperature detection assembly, and the switch piece, the introduction of cold air is accurately controlled, the flue gas temperature is adjusted to a safe range, the damage of the overheating phenomenon to the superheater is avoided, and the overall safety performance and stability of the boiler are improved.
[0037] In an embodiment, the through holes are uniformly arranged along a first direction (X direction). Figure 2
[0038] By uniformly arranging the through holes 32 along the first direction, it is ensured that the cold air uniformly enters the flue gas channel 50, the mixing efficiency of the cold air and the high-temperature flue gas is improved, the temperature adjusting effect is enhanced, and the equipment operation stability is improved.
[0039] In an embodiment, a first guide plate 33 is fixedly installed between the inlet end and the through hole 32 at the bottom of the flue gas channel 50, the first guide plate 33 is inclined close to the through hole, and the first guide plate 33 is configured to guide the high-temperature flue gas and guide the cold air entering the flue gas channel 50.
[0040] By fixedly arranging the first guide plate 33 at the bottom of the flue gas channel 50, the circulation of the cold air in the flue gas channel 50 is guided, the temperature adjusting efficiency of the high-temperature flue gas is ensured, and damage to the ventilation pipe by the high-temperature flue gas is avoided.
[0041] In an embodiment, a heat preservation plate 51 is fixedly installed on the inner wall of the flue gas channel 50.
[0042] By arranging the heat preservation plate 51, the heat energy utilization rate of the device is improved, the energy loss is reduced, and the energy saving and emission reduction effect is achieved.
[0043] In an embodiment, the waste heat recovery assembly 20 comprises a first recovery assembly 21, a second recovery assembly 22, and a third recovery assembly 23, the first recovery assembly 21 is installed at the front of the flue gas channel 50, the second recovery assembly 22 is installed at the middle of the flue gas channel 50, and the third recovery assembly 23 is installed at the rear of the flue gas channel 50.
[0044] Through cooperation of the first recovery assembly 21, the second recovery assembly 22 and the third recovery assembly 23, a multi-stage waste heat recovery structure is provided, which not only realizes staged efficient heat recovery and reduces energy waste, but also reduces subsequent flue gas treatment load and improves overall efficiency of the device.
[0045] In an embodiment, the first recovery assembly 21 is provided as a superheater, and an outlet end of the superheater is in communication with the second recovery assembly 22.
[0046] The second recovery assembly 22 comprises an upper header 220, a lower header 221, an inlet gas bundle 222 and an outlet gas bundle 223, two ends of the inlet gas bundle 222 and the outlet gas bundle 223 are in communication with the upper header 220 and the lower header 221 respectively, the outlet end of the superheater is in communication with the upper header 220, and the steam discharged by the superheater enters the upper header 220 and then enters the lower header 221 and the outlet gas bundle 223 in turn through the inlet gas bundle 222, and reenters the upper header 220 through the outlet gas bundle 223.
[0047] Through cooperation of the upper header 220, the lower header 221, the inlet gas bundle 222 and the outlet gas bundle 223, a counterflow tube bundle structure is provided, which fully recovers heat in the flue gas, significantly improves energy utilization efficiency of the waste heat boiler and reduces energy waste.
[0048] In an embodiment, the second guide plate 52 and the third guide plate 53 are fixedly installed on an inner wall of the flue gas passage 50, the second guide plate 52 and the third guide plate 53 are inclined towards the lower header 221, the second guide plate 52 and the third guide plate 53 are oppositely arranged, the third guide plate 53 is located above the second guide plate 52, the second guide plate 52 is in contact with the inlet gas bundle 222, and the third guide plate 53 is in contact with the outlet gas bundle 223.
[0049] Through cooperation of the second guide plate 52 and the third guide plate 53, uniform contact of the flue gas with the inlet gas bundle 222 and the outlet gas bundle 223 is ensured, heat exchange efficiency of the high-temperature flue gas with the tube bundle is guaranteed, contact time of the high-temperature flue gas with the tube bundle is increased, and waste heat recovery effect is further improved.
[0050] In an embodiment, the upper header 220 comprises an inlet gas header 2200 and an outlet gas header 2201, the inlet gas header 2200 and the outlet gas header 2201 are disconnected through a partition plate 2202, the inlet gas header 2200 is in communication with the outlet end of the superheater and the inlet gas bundle 222 respectively, and the outlet gas header 2201 is in communication with the outlet gas bundle 223.
[0051] Through cooperation of the inlet gas header 2200 and the outlet gas header 2201, steam flow paths are accurately distributed, temperature imbalance is avoided, equipment operation efficiency is improved, and backflow phenomenon is avoided, so that stable operation of the equipment is ensured.
[0052] In one embodiment, the third recovery component 23 is arranged as an H-type economizer.
[0053] By arranging the H-type economizer at the tail of the flue gas passage 50, the heat energy in the tail flue gas is recovered efficiently by using the compact and large heat exchange area tube bundle, the fuel consumption is reduced, and the high-temperature flue gas waste heat is fully recovered and utilized.
[0054] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited to the above examples. Various changes and modifications can be made to the present application without departing from the spirit and scope of the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A high safety waste heat boiler apparatus, characterized by, The high-safety waste heat boiler device comprises a rack, a waste heat recovery assembly, a temperature adjusting assembly and a plurality of baffles, wherein: The baffles are fixedly installed on the rack, a plurality of adjacent side ends of the baffles are fixedly connected to form a flue gas channel, the flue gas channel is configured to transport high-temperature flue gas, the waste heat recovery assembly is installed in the flue gas channel, and the waste heat recovery assembly is configured to recover heat of the high-temperature flue gas; The high-temperature flue gas enters from an inlet end of the flue gas channel, a bottom surface of the flue gas channel inlet end is provided with a plurality of through holes, the temperature adjusting assembly communicates with the flue gas channel through the through holes, and the temperature adjusting assembly is configured to introduce external cooling air to adjust the temperature of the high-temperature flue gas entering the flue gas channel to a specified range.
2. The high safety heat recovery boiler device according to claim 1, characterized by The temperature adjusting assembly comprises a ventilation duct, a temperature detecting assembly and a switch, a gas outlet of the ventilation duct communicates with the flue gas channel through the through holes, the ventilation duct is configured to transport cooling air to the flue gas channel, the switch is installed in the flue gas channel, and the switch is configured to open or close an air inlet of the ventilation duct. The temperature detecting assembly is connected with the switch, and the temperature detecting assembly is configured to detect the temperature of the high-temperature flue gas and control the opening or closing of the switch according to temperature information.
3. The high safety heat recovery boiler device according to claim 1, characterized by The through holes are uniformly arranged along a first direction.
4. The high safety heat recovery boiler device according to claim 2, characterized by A first guide plate is fixedly installed on the bottom of the flue gas channel between the inlet end and the through holes, the first guide plate is inclined close to the through holes, and the first guide plate is configured to guide the high-temperature flue gas and the cooling air entering the flue gas channel.
5. The high safety heat recovery boiler apparatus according to claim 1, wherein A heat preservation plate is fixedly installed on an inner wall of the flue gas channel.
6. The high safety heat recovery boiler apparatus according to claim 1, wherein The waste heat recovery assembly comprises a first recovery assembly, a second recovery assembly and a third recovery assembly, the first recovery assembly is installed in a front passage of the flue gas channel, the second recovery assembly is installed in a middle passage of the flue gas channel, and the third recovery assembly is installed in a rear passage of the flue gas channel.
7. The high safety heat recovery boiler device according to claim 6, characterized by The first recovery assembly is a superheater, and an outlet end of the superheater communicates with the second recovery assembly. The second recovery assembly comprises an upper header, a lower header, an air inlet pipe bundle and an air outlet pipe bundle, two ends of the air inlet pipe bundle and the air outlet pipe bundle respectively communicate with the upper header and the lower header, the superheater outlet end communicates with the upper header, and steam discharged by the superheater enters the upper header, then enters the lower header and the air outlet pipe bundle in sequence through the air inlet pipe bundle, and reenters the upper header through the air outlet pipe bundle.
8. The high safety heat recovery boiler device according to claim 7, characterized by A second guide plate and a third guide plate are fixedly installed on the inner wall of the flue gas channel, the second guide plate and the third guide plate are inclined towards the lower header, the second guide plate and the third guide plate are oppositely arranged, the third guide plate is located above the second guide plate, the second guide plate is in contact with the air inlet pipe bundle, and the third guide plate is in contact with the air outlet pipe bundle.
9. The high safety heat recovery boiler apparatus according to claim 7, characterized by The upper header tank comprises an air inlet header tank and an air outlet header tank, the air inlet header tank is disconnected from the air outlet header tank by a partition, the air inlet header tank is communicated with the superheater outlet end and the air inlet tube bundle respectively, and the air outlet header tank is communicated with the air outlet tube bundle.
10. The high safety heat recovery boiler apparatus according to claim 6, characterized by The third recovery component is arranged as an H-shaped economizer.