CN215446405U

CN215446405U - Kiln hood waste heat power generation device and system

Info

Publication number: CN215446405U
Application number: CN202121520098.5U
Authority: CN
Inventors: 冯建新
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2022-01-07
Anticipated expiration: 2031-07-06

Abstract

The utility model provides a kiln hood waste heat power generation device and a system, wherein a steam generation device is arranged in a kiln hood, the steam generation device is respectively provided with a heat exchange medium inlet and a heat exchange medium outlet, the heat exchange medium inlet penetrates through the wall of the kiln hood cover and is respectively communicated with a water tank and an external heat exchange medium, a first temperature detector is arranged at the external heat exchange medium outlet, the water tank is filled with the heat exchange medium, a flow regulating valve is arranged at the water tank outlet, a gas collecting tank is connected after the heat exchange medium outlet penetrates through the wall of the kiln hood cover, and the output end of the gas collecting tank is connected with a power generation system. The utility model has the advantages that through repeated cooling of the steam generating device, the arrangement of the steam generating device in the kiln head cover becomes a feasible scheme for generating power by utilizing the high-temperature waste heat of the kiln head cover, the high-temperature waste heat of the kiln head cover is fully utilized, and meanwhile, a better power generation effect is achieved.

Description

Kiln hood waste heat power generation device and system

Technical Field

The utility model relates to the technical field of cement rotary kilns, in particular to a kiln head cover waste heat power generation device and system.

Background

The kiln head cover of the cement rotary kiln is used as a connecting device and plays a role in connecting a combustor (primary air), a rotary kiln (secondary air), a grate cooler and sealing. In the operation process, high-temperature clinker at 1300 ℃ in the rotary kiln falls into the grate cooler, a large amount of high-temperature combustion-supporting air generated by cooling the clinker in the grate cooler and high-temperature air heated in the falling process of the clinker discharged from the kiln are collected in the kiln head cover, and high-temperature waste gas is generated in the kiln head cover; if the high-temperature waste gas of the kiln hood is used for generating power, firstly, the high-temperature waste heat of 1300 ℃ in the kiln hood has high requirement on the heat resistance of steam generating equipment, and secondly, the generated superheated steam has too high temperature and can be directly used for a power generating device to damage the equipment, so that the realization cannot be realized. Therefore, there is an urgent need in the market for an apparatus capable of generating electricity using high-temperature waste heat of a kiln head housing.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the related technology, the technical problem to be solved by the utility model is as follows: the kiln hood waste heat power generation device and system can fully utilize high-temperature waste heat in a kiln hood, have good cooling effect on steam generating equipment, and generate high-quality enough steam for power generation.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a kiln hood cover waste heat power generation device, includes the kiln hood cover, be equipped with steam generation device in the kiln hood cover, steam generation device is equipped with heat transfer medium entry and heat transfer medium export respectively, the heat transfer medium entry communicates water tank and outside heat transfer medium respectively after passing kiln hood cover wall, outside heat transfer medium exit is equipped with first temperature detector, contain heat transfer medium in the water tank, water tank exit is equipped with flow control valve, be connected with the gas collection case after the heat transfer medium export passes kiln hood cover wall, the output of gas collection case is connected with power generation system.

Preferably, the kiln head cover is respectively communicated with a kiln head of the rotary kiln and a tertiary air pipe, the steam generating device is a gas turbulence fluid director, the gas turbulence fluid director is provided with a high-temperature waste gas absorbing end, a first turbulence waste gas discharge end and a second turbulence waste gas discharge end, the high-temperature waste gas absorbing end is communicated with a high-temperature area of the grate cooler, and the first turbulence waste gas discharge end and the second turbulence waste gas discharge end are respectively communicated with the kiln head of the rotary kiln and the tertiary air pipe.

The gas turbulence fluid director is mainly formed by arranging a plurality of serpentine bent pipes at intervals, and the serpentine bent pipes are sequentially communicated.

Preferably, the kiln head cover is further communicated with a quartic air pipe, the gas turbulence fluid director is further provided with a third turbulence discharge end, the third turbulence discharge end is communicated with the quartic air pipe, the quartic air pipe is communicated with a kiln head waste heat boiler, and steam generated by the kiln head waste heat boiler is conveyed into the gas collection box.

Preferably, a second temperature detector is further arranged at the heat exchange medium outlet.

Preferably, the external heat exchange medium is steam generated by a kiln tail waste heat boiler.

Preferably, the horizontal height of the water tank is higher than that of the kiln head cover, and the heat exchange medium is deoxygenated water.

Preferably, the gas turbulence deflector is made of a high temperature resistant material.

The kiln head cover waste heat power generation system comprises a kiln head cover waste heat power generation device and at least one control center, wherein a signal input end of the control center is electrically connected with a signal output end of a first temperature detector and a signal output end of a second temperature detector respectively, and a signal output end of the control center is electrically connected with a signal input end of a flow regulating valve.

The utility model has the beneficial technical effects that:

1. the utility model provides a kiln head cover waste heat power generation device which comprises a kiln head cover, wherein a steam generation device is arranged in the kiln head cover, the steam generation device is respectively provided with a heat exchange medium inlet and a heat exchange medium outlet, the heat exchange medium inlet penetrates through the wall of the kiln head cover and is respectively communicated with a water tank and an external heat exchange medium, a first temperature detector is arranged at the external heat exchange medium outlet, the water tank is filled with the heat exchange medium, a flow regulating valve is arranged at the outlet of the water tank, the heat exchange medium outlet penetrates through the wall of the kiln head cover and is connected with a gas collecting box, and the output end of the gas collecting box is connected with a power generation system.

When the device is operated, an external heat exchange medium is communicated, enters the steam generation device through the heat exchange medium inlet, and fully exchanges heat with high-temperature waste gas in a high-temperature area of the kiln hood, so that steam is generated while the surface temperature of the steam generation device is reduced for the first time;

meanwhile, the first temperature detector detects the temperature of an external heat exchange medium in real time, the flow regulating valve is opened and properly regulated according to the temperature detected by the first temperature detector, the flow of the heat exchange medium is controlled, the heat exchange medium enters the steam generation device from the heat exchange medium inlet, the heat exchange medium is mixed with the external heat exchange medium, the surface temperature of the steam generation device is further reduced, new steam is generated, the mixed steam is large in amount and slightly lower in temperature than before, and the mixed steam enters the gas collection box through the heat exchange medium outlet and then enters the power generation system to generate power.

According to the utility model, the steam generating device is arranged in the kiln hood, high-temperature waste gas in the kiln hood is used for heating an external heat exchange medium to primarily reduce the surface temperature of the steam generating device, the first temperature detector is used for controlling the flow of the heat exchange medium in the water tank into the steam generating device, and the surface temperature of the steam generating device is further reduced, so that the arrangement of the steam generating device in the kiln hood becomes a feasible scheme for generating power by using high-temperature waste heat of the kiln hood, high-quality and sufficient steam can be generated for generating power, and a better power generating effect is achieved while the high-temperature waste heat of the kiln hood is fully utilized.

2. The kiln head cover is respectively communicated with a rotary kiln head and a tertiary air pipe, the steam generating device is a gas turbulence fluid director, the gas turbulence fluid director is provided with a high-temperature waste gas absorbing end, a first turbulence waste gas discharge end and a second turbulence waste gas discharge end, the high-temperature waste gas absorbing end is communicated with a high-temperature area of the grate cooler, and the first turbulence waste gas discharge end and the second turbulence waste gas discharge end are respectively communicated with the rotary kiln head and the tertiary air pipe; the gas turbulence fluid director is mainly formed by arranging a plurality of serpentine bent pipes at intervals, and the serpentine bent pipes are sequentially communicated.

When the equipment is operated, high-temperature clinker falls into the grate cooler from the kiln head of the rotary kiln through the kiln head cover for cooling, and part of high-temperature waste gas generated during clinker cooling is pumped to the kiln head of the rotary kiln to help pulverized coal combustion, namely secondary air; the other part is sent into a decomposing furnace through a tertiary air pipe to preheat cement raw materials, namely tertiary air; in the process, because the secondary air and the tertiary air are respectively arranged at the air suction ports of the kiln head cover, the phenomenon of 'air robbery' can be generated, and in order to avoid that the air volume of the secondary air is too low or the air volume of the tertiary air is too high, the air turbulence flow guider is arranged in the kiln head cover, when high-temperature waste gas passes through the air turbulence flow guider from the high-temperature waste gas absorption end, the high-temperature waste gas is irregularly dispersed for many times by the plurality of serpentine bent pipes, so that the high-temperature waste gas is changed into turbulence from laminar flow, and the turbulent high-temperature waste gas is respectively discharged to the kiln head of the rotary kiln and the tertiary air pipe from the first turbulent waste gas discharge end and the second turbulent waste gas discharge end.

The kiln head cover is internally provided with the gas turbulence flow guider, and the high-temperature waste gas is collided and dispersed by utilizing the straight pipe parts or the bent pipes of the plurality of snake-shaped bent pipes, so that the high-temperature waste gas is changed into turbulence flow from laminar flow, and the phenomenon of 'air robbing' of secondary air and tertiary air is solved, thereby solving the problem that the tertiary air pipe and the kiln head of the rotary kiln cannot be simultaneously arranged on the kiln head cover, obviously increasing the throughput of the high-temperature waste gas, improving the air volume balance of the rotary kiln system and increasing the heat efficiency of the rotary kiln system.

3. The kiln head cover is also communicated with a quartic air pipe, the gas turbulent flow deflector is also provided with a third turbulent flow discharge end, the third turbulent flow discharge end is communicated with the quartic air pipe, the quartic air pipe is communicated with a kiln head waste heat boiler, and steam generated by the kiln head waste heat boiler is conveyed into the air collection box; and a second temperature detector is also arranged at the heat exchange medium outlet.

Before entering a power generation system for power generation, a second temperature detector is used for detecting the temperature of steam at the outlet of a heat exchange medium, if the temperature of the steam is higher than the rated power generation temperature of the power generation system, a flow regulating valve is regulated again, the flow of the heat exchange medium is increased, so that the overall temperature of the steam is reduced, the rated power generation temperature of the power generation system is reached, the damage to the power generation system caused by the overhigh temperature of the steam is avoided, meanwhile, the newly added heat exchange medium further reduces the surface temperature of a steam generation device and generates more steam, the cooled steam enters a gas collection box from the outlet of the heat exchange medium, is mixed with the steam generated by a kiln head waste heat boiler and enters the power generation system for power generation;

meanwhile, different from the traditional method that waste gas at the low-temperature section of the grate cooler enters the waste heat boiler to generate electricity, the utility model utilizes the four-time air pipe to send high-temperature waste gas in the kiln head cover into the kiln head waste heat boiler to generate electricity, thereby greatly improving the heat efficiency of the waste heat power generation device.

4. The external heat exchange medium is steam generated by a kiln tail waste heat boiler.

The steam temperature that kiln tail exhaust-heat boiler produced is lower, and the temperature of waste heat in the hood of kiln is not too late, utilizes the steam that kiln tail exhaust-heat boiler produced as outside heat transfer medium, can not only carry out preliminary cooling to steam generation device, and carries out the secondary heating to the steam that kiln tail exhaust-heat boiler produced, has increased the generating efficiency.

5. The horizontal height of the water tank is higher than that of a kiln head cover, and the heat exchange medium is deoxygenated water.

The potential energy generated by the height difference is utilized, so that the heat exchange medium in the water tank can be smoothly transported to the steam generating device without additionally adding a device for transporting the heat exchange medium; compared with common industrial water, the deoxygenation water can effectively reduce the gas shock phenomenon generated by the whole device during power generation and reduce the damage of equipment.

6. The kiln head cover waste heat power generation system comprises at least one control center, wherein a signal input end of the control center is electrically connected with a signal output end of the first temperature detector and a signal output end of the second temperature detector respectively, and a signal output end of the control center is electrically connected with a signal input end of the flow regulating valve.

By utilizing the control center, the real-time monitoring of the temperature of the steam generated by the external heat exchange medium and the heat exchange medium outlet can be realized, and the flow regulating valve is dynamically regulated according to the monitoring result, so that the cooling effect of the steam generating device and the normal operation of the power generation system are ensured.

Drawings

Fig. 1 is a schematic structural diagram of a kiln hood waste heat power generation device provided by an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of a turbulent gas flow deflector provided by an embodiment of the present invention;

in the figure: 10 is a kiln head cover, 101 is a rotary kiln head, 102 is a tertiary air pipe, 103 is a quaternary air pipe, 20 is a steam generating device, 201 is a heat exchange medium inlet, 202 is a heat exchange medium outlet, 30 is a water tank, 301 is a heat exchange medium, 302 is a flow regulating valve, 40 is an external heat exchange medium, 401 is a first temperature detector, 50 is a gas collecting tank, 60 is a power generation system, 70 is a gas turbulence flow guider, 701 is a high-temperature waste gas absorbing end, 702 is a first turbulence waste gas discharging end, 703 is a second turbulence waste gas discharging end, 704 is a third turbulence waste gas discharging end, 80 is a grate cooler, and 90 is a kiln head waste heat boiler.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

The following describes in detail a specific embodiment of the kiln head hood waste heat power generation device and system with reference to the accompanying drawings.

As shown in fig. 1 and 2, the kiln head cover waste heat power generation device comprises a kiln head cover 10, a steam generation device 20 is arranged in the kiln head cover 10, the steam generation device 20 is respectively provided with a heat exchange medium inlet 201 and a heat exchange medium outlet 202, the heat exchange medium inlet 201 penetrates through the wall of the kiln head cover 10 and is respectively communicated with a water tank 30 and an external heat exchange medium 40, a first temperature detector 401 is arranged at the outlet of the external heat exchange medium 40, a heat exchange medium 301 is contained in the water tank 30, a flow regulating valve 302 is arranged at the outlet of the water tank 30, a gas collection tank 50 is connected after the heat exchange medium outlet 202 penetrates through the wall of the kiln head cover 10, and the output end of the gas collection tank 50 is connected with a power generation system 60.

When the device is operated, the external heat exchange medium 40 is communicated, the external heat exchange medium 40 enters the steam generating device 20 through the heat exchange medium inlet 201, the external heat exchange medium 40 and high-temperature waste gas in a high-temperature region of the kiln head cover 10 perform sufficient heat exchange, and steam is generated while the surface temperature of the steam generating device 20 is reduced for the first time;

meanwhile, the first temperature detector 401 detects the temperature of the external heat exchange medium 40 in real time, according to the temperature detected by the first temperature detector 401, the flow regulating valve 302 is opened and the flow regulating valve 302 is properly regulated, the flow of the heat exchange medium 301 is controlled, the heat exchange medium 301 enters the steam generation device 20 from the heat exchange medium inlet 201, the heat exchange medium 301 is mixed with the external heat exchange medium 40, new steam is generated while the surface temperature of the steam generation device 20 is further reduced, the mixed steam is large in amount and slightly lower in temperature than before, and the mixed steam enters the gas collection box 50 through the heat exchange medium outlet 202 and then enters the power generation system 60 to generate power.

According to the utility model, the steam generating device 20 is arranged in the kiln head cover 10, the external heat exchange medium 40 is firstly heated by using the high-temperature waste gas in the kiln head cover 10, the surface temperature of the steam generating device 20 is preliminarily reduced, and then the flow of the heat exchange medium 301 in the water tank 30 into the steam generating device 20 is controlled by using the first temperature detector 401, so that the surface temperature of the steam generating device 20 is further reduced, so that the arrangement of the steam generating device 20 in the kiln head cover 10 becomes a feasible scheme for generating electricity by using the high-temperature waste heat of the kiln head cover 10, high-quality and sufficient steam can be generated for generating electricity, and the high-temperature waste heat of the kiln head cover 10 is fully utilized, and meanwhile, a better electricity generating effect is achieved.

Further, the kiln head cover 10 is respectively communicated with a rotary kiln head 101 and a tertiary air duct 102, the steam generating device 20 is a gas turbulence flow guider 70, the gas turbulence flow guider 70 is provided with a high-temperature waste gas absorbing end 701, a first turbulence waste gas discharge end 702 and a second turbulence waste gas discharge end 703, the high-temperature waste gas absorbing end 701 is communicated with a high-temperature area of the grate cooler 80, and the first turbulence waste gas discharge end 702 and the second turbulence waste gas discharge end 703 are respectively communicated with the rotary kiln head 101 and the tertiary air duct 102.

Further, the gas turbulence deflector 70 is mainly composed of a plurality of serpentine bent pipes 705 which are arranged at intervals, and the serpentine bent pipes 705 are sequentially communicated with each other.

When the equipment is operated, high-temperature clinker falls into the grate cooler 80 from the kiln head 101 of the rotary kiln through the kiln head cover 10 for cooling, and part of high-temperature waste gas generated when the clinker is cooled is pumped into the kiln head 101 of the rotary kiln to help pulverized coal combustion, namely secondary air; the other part is sent into a decomposing furnace through a tertiary air pipe 102 to preheat cement raw materials, namely tertiary air; in the process, because the secondary air and the tertiary air are arranged at the air suction ports of the kiln head cover 10, the phenomenon of 'air robbery' can be generated, in order to avoid that the air volume of the secondary air is too low or the air volume of the tertiary air is too high, the air turbulence flow guider 70 is arranged in the kiln head cover 10, when high-temperature waste gas passes through the air turbulence flow guider 70 from the high-temperature waste gas absorption end 701, the high-temperature waste gas is irregularly dispersed for many times by the plurality of serpentine bent pipes 705, so that the high-temperature waste gas is changed into turbulence from laminar flow, and the turbulent high-temperature waste gas is respectively discharged from the first turbulent waste gas discharge end 702 and the second turbulent waste gas discharge end 703 to the rotary kiln head 101 and the tertiary air pipe 102.

The utility model arranges the gas turbulence flow guider 70 in the kiln head cover, and uses the straight pipe part or the bent pipe of a plurality of snake-shaped bent pipes 705 to collide and disperse the high-temperature waste gas, so that the high-temperature waste gas is changed into turbulence from laminar flow, thereby solving the phenomenon of 'air robbing' of secondary air and tertiary air, further solving the problem that the tertiary air pipe 102 and the rotary kiln head 101 can not be arranged on the kiln head cover 10 at the same time, obviously increasing the throughput of the high-temperature waste gas, improving the air volume balance of the rotary kiln system, and increasing the heat efficiency of the rotary kiln system.

Further, the kiln head cover 10 is further communicated with a fourth-time air pipe 103, the gas turbulence deflector 70 is further provided with a third turbulence discharge end 704, the third turbulence discharge end 704 is communicated with the fourth-time air pipe 103, the fourth-time air pipe 103 is communicated with the kiln head waste heat boiler 90, and steam generated by the kiln head waste heat boiler 90 is conveyed into the gas collection box 50.

Further, a second temperature detector 203 is further disposed at the heat exchange medium outlet 202.

Before entering the power generation system 60 for power generation, the second temperature detector 203 is used for detecting the temperature of the steam at the heat exchange medium outlet 202, if the temperature of the steam is higher than the rated power generation temperature of the power generation system 60, the flow regulating valve 302 is regulated again, and the flow of the heat exchange medium 301 is increased, so that the overall temperature of the steam is reduced, the rated power generation temperature of the power generation system 60 is reached, and the damage to the power generation system 60 caused by the overhigh temperature of the steam is avoided;

meanwhile, different from the traditional method that waste gas at the low-temperature section of the grate cooler 80 enters the waste heat boiler for power generation, the utility model utilizes the quartic air pipe 103 to send the high-temperature waste gas in the kiln head cover 10 into the kiln head waste heat boiler 90 for power generation, thereby greatly improving the heat efficiency of the waste heat power generation device.

Further, the external heat exchange medium 40 is steam generated by a kiln tail waste heat boiler.

The steam temperature that kiln tail exhaust-heat boiler produced is lower, and far not as the temperature of waste heat in the kiln hood cover, utilizes the steam that kiln tail exhaust-heat boiler produced as outside heat transfer medium 40, can not only carry out preliminary cooling to steam generation device 20, and carries out the secondary heating to the steam that kiln tail exhaust-heat boiler produced, has increased the generating efficiency.

Further, the water tank 30 is higher than the kiln head cover 10 in horizontal height, and the heat exchange medium 301 is deoxygenated water.

The potential energy generated by the height difference is utilized to enable the heat exchange medium 301 in the water tank 30 to be smoothly transported to the steam generating device 20 without additionally adding a device for transporting the heat exchange medium 301; compared with common industrial water, the deoxygenation water can effectively reduce the gas shock phenomenon generated by the whole device during power generation and reduce the damage of equipment.

The utility model provides a kiln hood cover waste heat power generation system, includes kiln hood cover waste heat power generation facility, kiln hood cover waste heat power generation system includes at least one control center, control center's signal input part respectively with first temperature detector 401's signal output part, second temperature detector 203's signal output part electrical connection, control center's signal output part with flow control valve 302's signal input part electrical connection.

By utilizing the control center, the temperature of the steam generated by the external heat exchange medium 40 and the heat exchange medium outlet 202 can be monitored in real time, and the flow regulating valve 302 can be dynamically regulated according to the monitoring result, so that the cooling effect of the steam generating device 20 and the normal operation of the power generation system 60 are ensured.

Compared with the traditional kiln head cover waste heat power generation device, the utility model has the advantages that the steam generation device 20 is arranged in the kiln head cover 10, the high-temperature waste gas in the kiln head cover 10 is used for heating the external heat exchange medium 40 firstly, the surface temperature of the steam generation device 20 is reduced primarily, the first temperature detector 401 is used for controlling the flow rate of the heat exchange medium 301 in the water tank 30 entering the steam generation device 20, and the surface temperature of the steam generation device 20 is further reduced, so that the arrangement of the steam generation device 20 in the kiln head cover 10 becomes a feasible scheme for generating power by using the high-temperature waste heat of the kiln head cover 10, high-quality and sufficient steam can be generated for power generation, and the high-temperature waste heat of the kiln head cover 10 is fully utilized, and meanwhile, a better power generation effect is achieved. And because of the special structure of the gas turbulence flow guider 70, the phenomenon of 'wind rush' of secondary wind, tertiary wind and quartic wind is solved, the problem that the kiln head 101, the tertiary air pipe 102 and the quartic air pipe 103 of the rotary kiln can not be simultaneously arranged on the kiln head cover 10 is solved, the high-temperature waste gas throughput is obviously increased, the air volume balance of the rotary kiln system is improved, and the heat efficiency of the rotary kiln system is increased.

The utility model has the advantages of convenient operation, wide application range and strong industrial practicability.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of "one embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It will be appreciated that the relevant features of the devices and systems described above are referred to one another.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A kiln head cover waste heat power generation device is characterized by comprising a kiln head cover (10), a steam generating device (20) is arranged in the kiln head cover (10), the steam generating device (20) is respectively provided with a heat exchange medium inlet (201) and a heat exchange medium outlet (202), the heat exchange medium inlet (201) penetrates through the wall of the kiln head cover (10) and is respectively communicated with a water tank (30) and an external heat exchange medium (40), a first temperature detector (401) is arranged at the outlet of the external heat exchange medium (40), the water tank (30) is filled with a heat exchange medium (301), a flow regulating valve (302) is arranged at the outlet of the water tank (30), the heat exchange medium outlet (202) penetrates through the wall of the kiln head cover (10) and is connected with a gas collecting tank (50), the output end of the gas collection box (50) is connected with a power generation system (60), and a second temperature detector (203) is further arranged at the heat exchange medium outlet (202).

2. The kiln hood waste heat power generation device as claimed in claim 1, wherein the kiln hood (10) is respectively communicated with a rotary kiln head (101) and a tertiary air duct (102), the steam generation device (20) is a gas turbulence flow guider (70), the gas turbulence flow guider (70) is provided with a high-temperature waste gas absorption end (701), a first turbulence waste gas discharge end (702) and a second turbulence waste gas discharge end (703), the high-temperature waste gas absorption end (701) is communicated with a high-temperature area of the grate cooler (80), and the first turbulence waste gas discharge end (702) and the second turbulence waste gas discharge end (703) are respectively communicated with the rotary kiln head (101) and the tertiary air duct (102).

3. The kiln hood cogeneration apparatus of claim 2, wherein said gas turbulence inducer (70) is mainly composed of a plurality of serpentine pipes (705) arranged at intervals, said plurality of serpentine pipes (705) being connected in series.

4. The kiln head cover waste heat power generation device as claimed in claim 2, wherein the kiln head cover (10) is further communicated with a fourth-time air pipe (103), the gas turbulence flow guider (70) is further provided with a third turbulence discharge end (704), the third turbulence discharge end (704) is communicated with the fourth-time air pipe (103), the fourth-time air pipe (103) is communicated with a kiln head waste heat boiler (90), and steam generated by the kiln head waste heat boiler (90) is conveyed into the gas collection box (50).

5. The kiln head hood cogeneration device of claim 1, wherein said external heat exchange medium (40) is steam generated by a kiln tail waste heat boiler.

6. The kiln head hood waste heat power generation device as claimed in claim 1, wherein the water tank (30) is higher than the kiln head hood (10) in horizontal height, and the heat exchange medium (301) is deoxygenated water.

7. A kiln hood cogeneration unit according to claim 2, wherein said gas turbulence inducer (70) is made of a high temperature resistant material.

8. The kiln head cover waste heat power generation system is characterized by comprising a kiln head cover waste heat power generation device, the kiln head cover waste heat power generation device is the kiln head cover waste heat power generation device according to any one of claims 1 to 7, the kiln head cover waste heat power generation system comprises at least one control center, a signal input end of the control center is electrically connected with a signal output end of a first temperature detector (401) and a signal output end of a second temperature detector (203), and a signal output end of the control center is electrically connected with a signal input end of a flow regulating valve (302).