CN209978594U - Utilize rotary kiln to preheat device that raw material disposes discarded object - Google Patents
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- CN209978594U CN209978594U CN201920377090.4U CN201920377090U CN209978594U CN 209978594 U CN209978594 U CN 209978594U CN 201920377090 U CN201920377090 U CN 201920377090U CN 209978594 U CN209978594 U CN 209978594U
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Abstract
The utility model provides an utilize rotary kiln to preheat device that raw material dealt with discarded object includes: the rotary kiln comprises a decomposing furnace, a rotary kiln, a tertiary air pipe connecting a kiln head of the rotary kiln and the decomposing furnace, and a micro rotary kiln arranged at an inclination angle with the tertiary air pipe, wherein one end of the micro rotary kiln is communicated with the tertiary air pipe through a first pipeline, the other end of the micro rotary kiln is communicated with the decomposing furnace through a second pipeline, and the micro rotary furnace is communicated with one end of the tertiary air pipe and is higher than one end communicated with the decomposing furnace; and the first pipeline is communicated with the preheater through a third pipeline, so that the hot raw materials in the preheater are shunted to the micro rotary kiln through the third pipeline. The utility model discloses realize the innocent treatment process to solid waste when carrying out cement clinker production to improve the filling volume of discarded object, and can avoid coking in miniature rotary kiln and the pipeline to block up.
Description
Technical Field
The utility model relates to a waste treatment technical field is in coordination with cement manufacture, in particular to utilize rotary kiln to preheat device that raw material dealt with discarded object.
Background
With the continuous development of social science and technology, the problem that the environment is continuously polluted is also caused, the environment on which human beings live is very fragile, and people limit the pollutant discharge industry in order to protect the environment. At the same time, efforts are constantly being made to treat pollutants.
The kiln for cement production has a high-temperature strong oxidation alkaline environment in the process of calcining clinker in a rotary kiln at high temperature, and the high-temperature strong oxidation alkaline environment provides excellent treatment conditions for some solid wastes meeting the requirement of entering the kiln. Currently, the use of cement kilns for the co-disposal of waste, such as hazardous waste, household waste, municipal and industrial sludge, contaminated soil and other solid waste, has been widely developed. However, the waste is generally added by means of SMP (crushing-Mixing-Pumping system), raw meal pre-blending, kiln head injection, decomposing furnace input and the like, and the adding amount is controlled by the limit of the size of the adding port and the adding amount of a local small area. However, the various methods of the prior art, whether injecting the waste from the kiln head or adding the waste into the decomposing furnace, have the following disadvantages.
For example, the injection of waste from the kiln head or the addition of waste to the decomposing furnace, there is excessive heat absorption or excessive heat release in the kiln head or the decomposing furnace, resulting in a limited amount of waste. Moreover, when an accident occurs during the disposal of the waste, the cement kiln needs to be closed for inspection and maintenance, which affects the operation of the cement kiln.
Therefore, in order to solve the above problems in the prior art, there is a need for a device for treating waste by preheating raw materials with a rotary kiln, which realizes harmless treatment of fixed waste while producing cement clinker, and ensures normal operation of a cement kiln while increasing the amount of waste treated.
SUMMERY OF THE UTILITY MODEL
An aspect of the utility model is to provide an utilize rotary kiln to preheat device that raw material disposes discarded object, the device includes:
decomposing furnace, rotary kiln, tertiary air duct connecting kiln head of rotary kiln and decomposing furnace, and
the miniature rotary kiln is arranged at an inclination angle with the tertiary air pipe, one end of the miniature rotary kiln is communicated with the tertiary air pipe through a first pipeline, the other end of the miniature rotary kiln is communicated with the decomposing furnace through a second pipeline, and the miniature rotary kiln is communicated with one end of the tertiary air pipe and is higher than one end communicated with the decomposing furnace;
the micro rotary kiln is characterized in that a waste filling port is arranged on a first pipeline communicated with the tertiary air pipe, and the first pipeline is communicated with the preheater through a third pipeline, so that hot raw materials in the preheater are distributed to the micro rotary kiln through the third pipeline.
In a preferred embodiment, the first conduit communicates with at least one cyclone in the preheater via a third conduit.
In a preferred embodiment, a first regulating shutter is arranged on the first pipeline.
In a preferred embodiment, a second regulating gate is provided on the second pipeline.
In a preferred embodiment, a third regulating shutter is arranged on the tertiary air pipe.
In a preferred embodiment, the waste filler opening is provided with a waste filler device for filling the first conduit with waste.
Another aspect of the present invention is to provide a method for treating waste by preheating raw meal using a rotary kiln, the method comprising the following method steps:
high-temperature hot air of the tertiary air pipe is introduced into the micro rotary kiln through a first pipeline;
the hot raw materials are distributed to the micro rotary kiln through a third pipeline;
waste is introduced into the micro rotary kiln through a waste filling port;
and after the waste is decomposed at high temperature in the micro rotary kiln, the waste is discharged to the decomposing furnace through a second pipeline.
In a preferred embodiment, the high-temperature hot air is controlled to be introduced into the micro rotary kiln through a first regulating damper.
In a preferred embodiment, the decomposed waste discharged to the decomposing furnace is controlled by a second regulating shutter.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material dealt with discarded object, arrange miniature rotary kiln side by side at the tertiary tuber pipe near closing on kiln tail decomposing furnace, utilize in the tertiary tuber pipe to go on for containing oxygen's high temperature hot-blast introduction miniature rotary kiln, deal with the discarded object of filling miniature rotary kiln, under the prerequisite that reduces the operation influence of cement kiln, can increase the filling volume of discarded object.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material disposes discarded object realizes under the prerequisite of cement kiln normal operating, convenient safe increase handling volume, when the unexpected condition takes place, closing system that can be quick does not cause the supporting device of influence to current cement kiln system.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material dealt with discarded object, whole devices do not have environmental protection and special restriction, are fit for the industrial production occasion that the cement kiln dealt with in coordination completely. The use is convenient, safe and reliable, can reduce the furnace capacity pressure of the decomposing furnace, increase the thermal decomposition exchange time of the waste and improve the waste disposal efficiency.
The device for treating waste by preheating raw materials by using the rotary kiln and the treatment method can be put into use at any time according to the needs of a factory; the device is installed when the production line stops production, the existing production system does not need to be changed, and the normal production is not influenced.
The utility model provides an utilize rotary kiln to preheat device and processing method that the raw material dealt with discarded object, the cement kiln is dealt with the device area of discarded object in coordination little, and is minimum to current equipment transformation volume, and it is convenient to reform transform, and the very big convenient enterprise uses. The cement clinker production is carried out while the harmless treatment process of the solid waste is realized.
The utility model discloses a be the miniature rotary kiln that the inclination was arranged with the cubic tuber pipe, the first pipeline of miniature rotary kiln one end through third pipeline and pre-heater intercommunication, makes hot raw reposition of redundant personnel to miniature rotary kiln, lays hot raw meal powder at miniature rotary kiln interior conduit bottom in advance, forms the hot raw bed course in bottom, makes follow-up discarded object fall on hot raw, not with miniature rotary kiln interior conduit bottom direct contact, reduces the possibility that the coking blockked up.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, as claimed.
Drawings
Further objects, functions and advantages of the present invention will become apparent from the following description of embodiments of the present invention, with reference to the accompanying drawings, in which:
fig. 1 schematically shows a schematic view of a cement kiln structure for calcination of cement clinker in the prior art.
Figure 2 shows a schematic view of the apparatus of the present invention for treating waste by preheating raw meal with a rotary kiln.
Fig. 3 shows a block diagram of the apparatus for treating waste by preheating raw material using a rotary kiln according to the present invention.
Detailed Description
The objects and functions of the present invention and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
In order to clearly explain the content of the present invention, a cement kiln system is first described, as shown in fig. 1, which is a schematic structural diagram of a cement kiln for calcining cement clinker in the prior art, during the cement kiln producing cement clinker, the kiln head 201 of the rotary kiln 200 is ignited, and the high-temperature hot air of the last thousand degrees goes upward to the high-temperature fan through the kiln tail 202 of the rotary kiln 200 to the preheater 100 to be discharged. The raw meal is fed and metered, enters the preheater and exchanges heat with high-temperature hot air to generate hot raw meal, the raw meal and the high-temperature hot air in the preheater 100 are preheated by a plurality of cyclones (C1, C2, C3, C4 and C5) for heat exchange, and then the raw meal is preheated to generate the hot raw meal. The hot raw material enters the decomposing furnace 203 to exchange heat with high-temperature hot air introduced by the tertiary air pipe 204, the hot raw material is sent to the rotary kiln 200, the hot raw material is calcined by the rotary kiln 200 to form clinker, and the clinker is discharged after entering the grate cooler to be cooled.
In the cement clinker calcination process, the high-temperature hot air has a temperature of 1450 ℃ at the kiln head 201 of the rotary kiln 200 (first fire), a temperature of 1100 ℃ at the kiln tail 202 of the rotary kiln 200 (second fire), and a temperature of 950 ℃ at the decomposing furnace 203 through the tertiary air pipe 204 (third fire). The high-temperature hot air passes through the preheater 100, and then is discharged by a high-temperature fan, wherein the temperature of the high-temperature hot air is about 300 ℃.
The rotary kiln cement manufacturing industry is indispensable main equipment. The high-temperature strong-oxidation alkaline environment of the cement kiln provides excellent conditions for the cooperative disposal of hazardous wastes and other wastes. In the prior art, in order to treat wastes such as hazardous wastes by using a rotary cement kiln, wastes are generally directly added into a decomposing furnace 203 of a kiln head 201 or a kiln tail 202. In the kiln head or in the decomposing furnace, there is either too much heat absorption or too much heat release, resulting in a limited waste disposal. Moreover, when an accident occurs in the waste disposal process, the whole cement kiln needs to be closed to carry out inspection and maintenance, so that the operation of the cement kiln is affected.
The tertiary air pipe is a standard cement kiln for heat recovery auxiliary combustion high-temperature air to enter the preheater 100. The utility model discloses an overcome the technical problem that appears among the prior art, utilize the hot-blast particularity of the high temperature that contains oxygen in tertiary tuber pipe 204, deal with the discarded object. Specifically, as shown in fig. 2 the utility model discloses utilize the rotary kiln to preheat the schematic diagram of the device that the waste was dealt with to the raw meal, fig. 3 shows the utility model discloses utilize the rotary kiln to preheat the structural block diagram of the device that the waste was dealt with to the raw meal, according to the utility model discloses an embodiment, a device that cement kiln deals with the waste in coordination includes: a decomposing furnace 203, a rotary kiln 200 and a tertiary air duct 204 connecting the kiln head 201 of the rotary kiln 200 and the decomposing furnace 203.
And a micro rotary kiln 205 arranged at an inclination angle with the tertiary air pipe 204, wherein one end of the micro rotary kiln 205 is communicated with the tertiary air pipe 204 through a first pipeline 206, the other end of the micro rotary kiln 205 is communicated with the decomposing furnace 203 through a second pipeline 207, and one end of the micro rotary kiln 205, which is communicated with the tertiary air pipe 204, is higher than one end communicated with the decomposing furnace 203. In this embodiment, a first regulating damper 208 is disposed on the first pipeline 206, a second regulating damper 209 is disposed on the second pipeline 207, and a third regulating damper 210 is disposed on the tertiary air duct 204. In some embodiments, only the first regulating gate 208 may be disposed on the first pipe 206. In other embodiments, only the second conduit 207 may be provided with the second regulating shutter 209.
In the micro rotary kiln 205, a waste filler port 202 is provided in a first pipe 206 communicating with the tertiary air pipe 204. The waste filling port 212 is provided with a waste filling device 211 for filling the first pipe with waste. The first pipeline 206 is communicated with the preheater through a third pipeline 213, so that hot raw meal in the preheater is diverted to the micro rotary kiln 205 through the third pipeline 213, the hot raw meal filling point of the first pipeline 206 through the third pipeline 213 is positioned in front of the waste filling port 202, and after the waste enters the first pipeline 206, a cushion layer of the hot raw meal is formed in the first pipeline 206.
According to an embodiment of the present invention, the first pipeline 206 communicates with the at least one cyclone in the preheater via the third pipeline 213. For example, in some embodiments, the third conduit 213 is in communication with a cyclone (C4) in the preheater, in other embodiments, the third conduit 213 is in communication with a cyclone (C2) in the preheater, and in some embodiments, the third conduit 213 may also be in communication with both a cyclone (C2) and a cyclone (C4) in the preheater.
In some embodiments, a shutter is provided in the third conduit 213 to control the flow of hot raw meal to the micro rotary kiln 205.
The utility model discloses miniature rotary kiln 205 structurally has the same structure with rotary kiln 200, reduces to match as for the tertiary tuber pipe in size. Specific structure those skilled in the art can design according to specific requirements on the site, and the application is not limited specifically, for example, those skilled in the art may connect the first pipeline 206 and the micro rotary kiln 205 through a flange and perform sealing treatment; the second pipeline 207 is connected with the micro rotary kiln 205 through a flange and is sealed.
The following combines the utility model provides an utilize rotary kiln to preheat device that raw material dealt with discarded object, it is right the utility model provides an utilize rotary kiln to preheat the method that raw material dealt with discarded object and explain, according to the utility model discloses an embodiment, a method that utilizes rotary kiln to preheat raw material and deal with discarded object includes following method step:
the high-temperature hot air in the tertiary air duct 204 is introduced into the micro rotary kiln 205 through a first pipeline 206.
The hot raw meal is diverted to the micro rotary kiln 205 via a third conduit 213.
Waste is introduced into the rotary kiln 205 through a waste injection port 212.
After the waste is decomposed at high temperature in the micro rotary kiln, the waste is discharged to the decomposing furnace through a second pipeline.
The micro rotary kiln 205 can realize convenient and safe increase of disposal quantity on the premise of normal operation of the cement kiln, and when an accident situation occurs, the system can be quickly closed without causing an influence on the existing cement kiln system.
In some cases, the waste components are complex in origin and there is a potential for coke build-up on combustion, resulting in narrowing of the duct, affecting ventilation and disposal. Based on this, the utility model discloses from the cyclone punishment branch partial heat raw meal in the cement kiln preheater, get into the miniature rotary kiln discarded object pan feeding mouth that the slope was placed and add before, lay hot raw meal powder in miniature rotary kiln in advance. Specifically, the first pipeline at one end of the micro rotary kiln is communicated with the preheater through the third pipeline, so that hot raw materials are shunted to the micro rotary kiln, hot raw material powder is paved on the bottom layer of the pipeline in the micro rotary kiln in advance to form a bottom hot raw material cushion layer, subsequent waste falls on the hot raw materials and is not in direct contact with the bottom layer of the pipeline in the micro rotary kiln, the possibility of coking and blockage is reduced, and then purging devices such as an air cannon are used for assisting, so that the system can run more reliably and efficiently.
According to the utility model discloses an embodiment, according to the needs of temperature and amount of wind, the degree of opening and shutting of control regulation and control flashboard, the hot-blast miniature rotary kiln 205 of introducing of first regulation and control flashboard 208 control high temperature discharges the discarded object after the decomposition of dore furnace through second regulation and control flashboard 209 control.
Specifically, the utility model discloses install the miniature rotary kiln 203 of an slope additional side by side near the tertiary tuber pipe 204 that closes on dore furnace 203, adjust the high temperature hot air flow of tertiary tuber pipe 204 through third regulation and control flashboard 2210, regulate and control the reposition of redundant personnel hot air flow of tertiary tuber pipe 204 through first flashboard 208.
The split hot air enters the micro rotary kiln 205 through a first pipeline 206, waste is filled in the kiln head of the micro rotary kiln 205 through a waste filling port 212, and the waste is heated and decomposed in the micro rotary kiln 205 through heat exchange, for example, organic matters are pyrolyzed to CO2And H2O, passing through the preheater 100 together with the high-temperature hot air in a gaseous state, and then discharging by a high-temperature fan; inorganic substanceFor example CaCO3The decomposed CaO is transferred to the tail of the micro rotary kiln 205 and sent to the decomposing furnace. Finally falls into the lower flow of the decomposing furnace 203. For example, the principles required by the applicable industry are returned to the rotary kiln 100 together with the hot raw meal, and the available components of the waste after decomposition are fully utilized.
The utility model discloses a arrange a miniature rotary kiln side by side at the cubic tuber pipe, compare at the direct filling discarded object in rotary kiln 200 kiln head or the decomposition stove, can avoid because kiln head or the interior heat absorption of decomposition stove are too much, or it is too much to release heat, leads to the discarded object handling volume to receive the restriction.
According to the utility model discloses an embodiment, can adjust the high temperature hot air volume in miniature rotary kiln 205 through first regulation flashboard 208, second regulation flashboard 209. For example, when the amount of waste to be disposed is small, the first control shutter 208 may be adjusted to reduce the amount of high-temperature hot air entering the micro rotary kiln 205, and when the amount of waste to be disposed is large, the first control shutter 208 may be adjusted to increase the amount of high-temperature hot air entering the micro rotary kiln 205.
For example, when the waste in the rotary kiln 205 is not sufficiently decomposed after heat exchange, the second damper may be adjusted to reduce the speed at which the waste is decomposed and then introduced into the decomposing furnace 203, thereby sufficiently decomposing the waste at a high temperature. The utility model provides a pair of utilize rotary kiln to preheat device that raw material dealt with discarded object breaks down or other needs shut down at miniature rotary kiln 205 under the condition, can close first regulation and control flashboard 208 and second regulation and control flashboard 209, makes in hot-blast not getting into miniature rotary kiln 205 to guarantee to overhaul safety. Meanwhile, the whole cement kiln system is not stopped, and the production operation of cement clinker is continuously preserved.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material dealt with discarded object, arrange miniature rotary kiln side by side at the tertiary tuber pipe near closing on kiln tail decomposing furnace, utilize in the tertiary tuber pipe to go on for containing oxygen's high temperature hot-blast introduction miniature rotary kiln, deal with the discarded object of filling miniature rotary kiln, under the prerequisite that reduces the operation influence of cement kiln, can increase the filling volume of discarded object.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material disposes discarded object realizes under the prerequisite of cement kiln normal operating, convenient safe increase handling volume, when the unexpected condition takes place, closing system that can be quick does not cause the supporting device of influence to current cement kiln system.
The utility model provides an utilize rotary kiln to preheat device and processing method that raw material dealt with discarded object, whole devices do not have environmental protection and special restriction, are fit for the industrial production occasion that the cement kiln dealt with in coordination completely. The use is convenient, safe and reliable, can reduce the furnace capacity pressure of the decomposing furnace, increase the thermal decomposition exchange time of the waste and improve the waste disposal efficiency.
The device for treating waste by preheating raw materials by using the rotary kiln and the treatment method can be put into use at any time according to the needs of a factory; the device is installed when the production line stops production, the existing production system does not need to be changed, and the normal production is not influenced.
The utility model provides an utilize rotary kiln to preheat device and processing method that the raw material dealt with discarded object, the cement kiln is dealt with the device area of discarded object in coordination little, and is minimum to current equipment transformation volume, and it is convenient to reform transform, and the very big convenient enterprise uses. The cement clinker production is carried out while the harmless treatment process of the solid waste is realized.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (6)
1. An apparatus for treating waste by preheating raw material using a rotary kiln, the apparatus comprising:
decomposing furnace, rotary kiln, tertiary air duct connecting kiln head of rotary kiln and decomposing furnace, and
the miniature rotary kiln is arranged at an inclination angle with the tertiary air pipe, one end of the miniature rotary kiln is communicated with the tertiary air pipe through a first pipeline, the other end of the miniature rotary kiln is communicated with the decomposing furnace through a second pipeline, and the miniature rotary kiln is communicated with one end of the tertiary air pipe and is higher than one end communicated with the decomposing furnace;
the micro rotary kiln is characterized in that a waste filling port is arranged on a first pipeline communicated with the tertiary air pipe, and the first pipeline is communicated with the preheater through a third pipeline, so that hot raw materials in the preheater are distributed to the micro rotary kiln through the third pipeline.
2. The apparatus for preheating raw meal disposal waste using a rotary kiln as set forth in claim 1, wherein the first pipeline is communicated with at least one cyclone in the preheater through a third pipeline.
3. The apparatus as claimed in claim 1, wherein the first pipe is provided with a first control shutter.
4. An apparatus for preheating raw meal disposal waste with a rotary kiln as set forth in claim 1 or 3, wherein the second pipeline is provided with a second regulating shutter.
5. The apparatus as claimed in claim 1, wherein a third control shutter is provided to the tertiary air duct.
6. The apparatus for waste disposal using a rotary kiln for preheating raw meal according to claim 1, wherein the waste injection port is provided with a waste injection means for injecting waste into the first pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920377090.4U CN209978594U (en) | 2019-03-22 | 2019-03-22 | Utilize rotary kiln to preheat device that raw material disposes discarded object |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920377090.4U CN209978594U (en) | 2019-03-22 | 2019-03-22 | Utilize rotary kiln to preheat device that raw material disposes discarded object |
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| CN209978594U true CN209978594U (en) | 2020-01-21 |
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| CN201920377090.4U Active CN209978594U (en) | 2019-03-22 | 2019-03-22 | Utilize rotary kiln to preheat device that raw material disposes discarded object |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006246A (en) * | 2019-03-22 | 2019-07-12 | 北京科太亚洲生态科技股份有限公司 | A kind of device and method of disposal using rotary kiln preheating raw material disposition waste |
-
2019
- 2019-03-22 CN CN201920377090.4U patent/CN209978594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006246A (en) * | 2019-03-22 | 2019-07-12 | 北京科太亚洲生态科技股份有限公司 | A kind of device and method of disposal using rotary kiln preheating raw material disposition waste |
| CN110006246B (en) * | 2019-03-22 | 2023-10-17 | 北京科太亚洲生态科技股份有限公司 | Device and method for disposing waste by preheating raw materials through rotary kiln |
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Effective date of registration: 20210114 Address after: 100081 2803-1, 24 / F, building 1, courtyard B 12, Zhongguancun South Street, Haidian District, Beijing Patentee after: ECOTEC ECO-TEC ASIA (BEIJING) Co.,Ltd. Patentee after: JIANGSU AEROSPACE HEWLETT ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 100081 Block B 1305, No. 18, South Street, Zhongguancun, Haidian District, Beijing Patentee before: ECOTEC ECO-TEC ASIA (BEIJING) Co.,Ltd. |
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