CN216403139U - Kiln dust and cement raw material warehousing system - Google Patents

Abstract

The application provides a kiln dust and cement raw material warehouse entry system, including exhaust-heat boiler, cyclone, raw material storehouse and kiln dust storehouse, exhaust-heat boiler's below is equipped with first zip fastener conveyer, the one end of first zip fastener conveyer is equipped with the tee bend pipeline, the tee bend pipeline includes the inlet pipe, first discharging pipe and second discharging pipe, inlet pipe and first zip fastener conveyer intercommunication, the below of first discharging pipe is equipped with first slope pipeline, first slope pipeline communicates in the raw material storehouse indirectly, the second discharging pipe communicates in kiln dust storehouse indirectly, be equipped with first control valve on the first discharging pipe, be equipped with the second control valve on the second discharging pipe, cyclone's below is equipped with second slope pipeline, second slope pipeline communicates indirectly on first slope pipeline. Kiln ash in this application can enter into raw material storehouse and kiln ash storehouse through first transport route and second transport route respectively to guarantee the material quality in the raw material storehouse, guarantee final product quality.

Description

Kiln dust and cement raw material warehousing system

Technical Field

The application relates to the technical field of cement production, in particular to a kiln dust and cement raw material warehousing system.

Background

The cement raw material is prepared by mixing a calcareous raw material, a clay raw material and a small amount of correction raw materials in proportion and grinding the mixture to a certain fineness by a raw material mill. The kiln dust is a dry powdery material which is collected from kiln tail waste gas sequentially through a waste heat boiler, a dust remover, a humidifying tower and the like when cement is produced by the rotary kiln. Mixing kiln dust and cement raw materials and entering a raw material warehouse.

Most of kiln dust in the kiln tail waste gas is collected into a waste heat boiler, and the kiln dust in the waste heat boiler and cement raw materials are conveyed into the same conveying inclined pipeline through a zipper conveyor and a conveying pipeline and then conveyed to a raw material warehouse through a warehouse entry elevator.

However, in this conveying method, when the raw mill is stopped, cement raw meal is no longer produced, and kiln dust in the waste heat boiler still can only enter the raw material warehouse through the conveying pipeline, which affects the quality of the materials in the raw material warehouse, and finally reduces the quality of cement products.

SUMMERY OF THE UTILITY MODEL

The application provides a kiln dust and cement raw feed warehouse entry system, when cement raw feed production, the kiln dust gets into the raw feed warehouse through first transport route together with cement raw feed. When the cement raw materials are not produced, the kiln ash enters the kiln ash bin through the second conveying path and does not enter the raw material bin any more, so that the quality of the materials in the raw material bin is ensured, and the final product quality is ensured.

In order to solve the technical problem, the following technical scheme is adopted in the application:

a kiln dust and cement raw material warehousing system comprises a waste heat boiler, a cyclone dust collector, a raw material warehouse and a kiln dust warehouse, wherein a first zipper conveyor is arranged below the waste heat boiler and used for receiving kiln dust discharged by the waste heat boiler, a three-way pipeline is arranged at one end of the first zipper conveyor and comprises a feeding pipe, a first discharging pipe and a second discharging pipe, the feeding pipe is communicated with the first zipper conveyor, a first inclined pipeline is arranged below the first discharging pipe and indirectly communicated with the raw material warehouse, the second discharging pipe is indirectly communicated with the kiln dust warehouse, a first control valve is arranged on the first discharging pipe, a second control valve is arranged on the second discharging pipe and respectively used for controlling the connection and disconnection of the first discharging pipe and the second discharging pipe, and a second inclined pipeline is arranged below the cyclone dust collector and used for receiving cement raw materials discharged by the cyclone dust collector, and the second inclined pipeline is indirectly communicated with the first inclined pipeline.

Compared with the prior art, the kiln dust and cement raw material warehousing system forms two conveying paths for conveying kiln dust through the three-way pipeline, and the first conveying path for the kiln dust is as follows: the waste heat boiler, the first zipper conveyor, the three-way pipeline, the first discharge pipe, the first inclined pipeline and the raw material warehouse are arranged, and the conveying path of the cement raw materials is a cyclone dust collector, a second inclined pipeline, the first inclined pipeline and the raw material warehouse, so that the mixing of kiln dust and the cement raw materials is realized at the first inclined pipeline and the kiln dust and the cement raw materials are conveyed to the raw material warehouse together. The second conveying path of the kiln dust is as follows: the waste heat boiler, the first zipper conveyor, the three-way pipeline, the second discharge pipe and the kiln ash bin. The first conveying path and the second conveying path can be switched through the first control valve and the second control valve, so that kiln dust can enter the raw material warehouse together with cement raw materials through the first conveying path when the cement raw materials are produced. When the cement raw materials are not produced, the kiln ash enters the kiln ash bin through the second conveying path and does not enter the raw material bin any more, so that the quality of the materials in the raw material bin is ensured, and the final product quality is ensured.

In an embodiment of the present application, the first control valve and the second control valve are both gate valves.

In an embodiment of the application, the device further comprises a first bucket elevator, wherein the lower end of the first bucket elevator is communicated with the discharge end of the first inclined pipeline, and the upper end of the first bucket elevator is communicated with the raw material warehouse.

In an embodiment of this application, still include bag collector and second bucket elevator, the below of bag collector is equipped with second zip fastener conveyer, is used for receiving bag collector exhaust kiln ash, the second ejection of compact pipe through third slope pipeline communicate in on the second zip fastener conveyer, the below of second zip fastener conveyer is equipped with third zip fastener conveyer, is used for receiving to come from the kiln ash that second zip fastener conveyer carried, the discharge end of third zip fastener conveyer communicate in on the second bucket elevator, the upper end of second bucket elevator communicate indirectly in kiln ash storehouse.

In an embodiment of the application, the kiln dust collector further comprises a humidifying tower, a fourth zipper conveyor is arranged below the humidifying tower and used for receiving kiln dust discharged by the humidifying tower, and a discharge end of the fourth zipper conveyor is communicated with the third zipper conveyor.

In an embodiment of the present application, the second bucket elevator is disposed between the first inclined pipeline and the second inclined pipeline, a feeding end of the first inclined pipeline is higher than a discharging end of the second inclined pipeline, and the discharging end of the second inclined pipeline is communicated with a lower end of the second bucket elevator.

In an embodiment of this application, second bucket elevator pass through the conveying pipeline communicate in kiln ash storehouse, be equipped with the branch pipe on the conveying pipeline, the branch pipe communicate in on the first slope pipeline, the discharge end of conveying pipeline is equipped with the third control valve, the feed end of branch pipe is equipped with the fourth control valve.

In an embodiment of the present application, the third control valve and the fourth control valve are both gate valves.

In an embodiment of the present application, the included angles between the first inclined pipeline, the second inclined pipeline and the third inclined pipeline and the horizontal plane are all 8 °.

In an embodiment of this application, the upper end of raw materials storehouse is equipped with the distributor, the distributor through six distribution inclined pipeline communicate in the raw materials storehouse, six the distribution inclined pipeline is followed the circumference evenly distributed of raw materials storehouse.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic equipment distribution diagram of a kiln dust and cement raw material warehousing system according to an embodiment of the present application.

Reference numerals:

100. a waste heat boiler; 150. a cyclone dust collector; 200. a raw material warehouse; 250. a kiln dust bin; 300. a first zipper conveyor; 350. a three-way pipeline; 351. a feed pipe; 352. a first discharge pipe; 353. a second discharge pipe; 354. a first control valve; 355. a second control valve; 400. a first inclined duct; 450. a second inclined duct; 500. a first bucket elevator; 550. a bag type dust collector; 600. a second bucket elevator; 650. a second zipper conveyor; 700. a third inclined duct; 750. a third zipper conveyor; 800. a humidifying tower; 850. a fourth zipper conveyor; 900. a delivery pipeline; 901. a branch pipe; 902. a third control valve; 903. a fourth control valve; 950. a dispenser; 951. dispensing the angled conduit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. 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 application.

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

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Some nouns are explained first:

the bucket elevator has the advantages of large conveying capacity, high lifting height, stable and reliable operation and long service life, and is suitable for conveying powdery, granular and small-block materials without grinding performance and with small grinding performance, such as coal, cement, stone, sand, clay, ore and the like.

The gate valve is one of the most commonly used shut-off valves, and is mainly used for connecting or shutting off a medium in a pipeline and is not used for regulating the flow of the medium. The applied pressure, temperature and diameter range is large, especially applied to medium and large diameter pipelines.

Fig. 1 is a schematic equipment distribution diagram of a kiln dust and cement raw material warehousing system according to an embodiment of the present application. The embodiment of the application provides a kiln dust and cement raw material warehousing system, as shown in fig. 1, including exhaust-heat boiler 100, cyclone 150, raw material warehouse 200 and kiln dust storehouse 250, wherein the kiln dust has been collected in exhaust-heat boiler 100, and the cement raw material has been collected in cyclone 150, and raw material warehouse 200 is used for collecting the mixed material of kiln dust and cement raw material, and kiln dust storehouse 250 is used for collecting the kiln dust.

As shown in fig. 1, a first zipper conveyor 300 is arranged below the waste heat boiler 100, the first zipper conveyor 300 is used for receiving kiln dust discharged from the waste heat boiler 100, a three-way pipe 350 is arranged at one end of the first zipper conveyor 300, the three-way pipe 350 comprises a feeding pipe 351, a first discharging pipe 352 and a second discharging pipe 353, the feeding pipe 351 is communicated with the first zipper conveyor 300, a first inclined pipe 400 is arranged below the first discharging pipe 352, and the first inclined pipe 400 is indirectly communicated with the raw material warehouse 200, so as to form a first conveying path: the waste heat boiler 100, the first zipper conveyor 300, the three-way pipe 350, the first discharge pipe 352, the first inclined pipe 400 and the raw material warehouse 200. The second outlet pipe 353 is indirectly connected to the kiln dust bin 250, so that a second conveying path is formed: the waste heat boiler 100, the first zipper conveyor 300, the three-way pipeline 350, the second discharge pipe 353 and the kiln ash bin 250.

The first discharge pipe 352 is provided with a first control valve 354, the second discharge pipe 353 is provided with a second control valve 355, and the first control valve 354 and the second control valve 355 are respectively used for controlling the on-off of the first discharge pipe 352 and the second discharge pipe 353, so that the on-off of the first discharge pipe 352 and the second discharge pipe 353 can be realized through the opening and closing of the first control valve 354 and the second control valve 355, that is, the switching between the first conveying path and the second conveying path is realized.

A second inclined duct 450 is provided below the cyclone 150 for receiving cement raw meal discharged from the cyclone 150, and the second inclined duct 450 is indirectly connected to the first inclined duct 400, thereby forming a transport path for the cement raw meal: the cyclone 150, the second inclined duct 450, the first inclined duct 400, and the raw material silo 200, the cement raw materials and the kiln dust are mixed in the first inclined duct 400 and enter the raw material silo 200 together.

Of course, the system for storing kiln dust and cement raw materials also comprises other necessary accessories, connecting pipes, control valves, monitoring instruments and the like, which are not shown in the figures and will not be described in detail herein.

It should be noted that "indirectly communicate" is to be understood that other conveying structures may be provided between the two, such as one or more of a zipper conveyor, a bucket elevator, an inclined duct, and the like.

Compared with the prior art, the kiln dust and cement raw material warehousing system forms two conveying paths for conveying kiln dust through the three-way pipeline 350, and the first conveying path is as follows: the waste heat boiler 100-the first zipper conveyor 300-the three-way pipe 350-the first discharge pipe 352-the first inclined pipe 400-the raw material warehouse 200, the conveying path of the cement raw material is the cyclone 150-the second inclined pipe 450-the first inclined pipe 400-the raw material warehouse 200, so that the mixing of the kiln dust and the cement raw material is realized at the first inclined pipe 400 and the mixture is conveyed to the raw material warehouse 200 together, and the second conveying path of the kiln dust is as follows: the waste heat boiler 100, the first zipper conveyor 300, the three-way pipeline 350, the second discharge pipe 353 and the kiln ash bin 250. The first and second transport paths are switchable by the first and second control valves 354 and 355 so that kiln dust can be introduced into the raw material silo 200 together with cement raw materials through the first transport path when cement raw materials are produced. When the cement raw materials are not produced, the kiln ash enters the kiln ash bin 250 through the second conveying path and does not enter the raw material warehouse 200 any more, so that the quality of the materials in the raw material warehouse 200 is ensured, and the final product quality is ensured.

In actual engineering, the tee pipe 350 is large in size. In some embodiments, the first control valve 354 and the second control valve 355 are gate valves, which are one of the most commonly used shut-off valves, and are mainly used for connecting or shutting off media in pipelines, especially for medium and large diameter pipelines, so as to meet the use requirements of practical engineering and achieve good practical use effects.

In some embodiments, as shown in fig. 1, the kiln dust and cement raw material warehousing system further includes a first bucket elevator 500, a lower end of the first bucket elevator 500 is communicated with a discharge end of the first inclined pipeline 400, an upper end of the first bucket elevator 500 is communicated with the raw material warehouse 200, kiln dust and cement raw materials enter the first bucket elevator 500 from the first inclined pipeline 400, and enter the raw material warehouse 200 after being lifted by the first bucket elevator 500, so that the first inclined pipeline 400 is indirectly communicated with the raw material warehouse 200.

In a production workshop, the tail gas sequentially passes through the waste heat boiler 100, the humidifying tower 800 and the bag-type dust collector 550, so that kiln dust carried by the tail gas is collected in the waste heat boiler 100, the humidifying tower 800 and the bag-type dust collector 550, and most of the kiln dust is collected in the waste heat boiler 100.

In order to enable kiln dust in the waste heat boiler 100 and the bag type dust collector 550 to enter the kiln dust bin 250, in some embodiments, as shown in fig. 1, the kiln dust and cement raw material warehousing system further comprises a bag type dust collector 550 and a second bucket elevator 600, a second zipper conveyor 650 is arranged below the bag type dust collector 550 and is used for receiving kiln dust discharged by the bag type dust collector 550, a second discharge pipe 353 is communicated with the second zipper conveyor 650 through a third inclined pipeline 700, a third zipper conveyor 750 is arranged below the second zipper conveyor 650 and is used for receiving kiln dust conveyed by the second zipper conveyor 650, a discharge end of the third zipper conveyor 750 is communicated with the second bucket elevator 600, and an upper end of the second bucket elevator 600 is indirectly communicated with the kiln dust bin 250. Kiln dust of the waste heat boiler 100 reaches the second zipper conveyor 650 through the second discharge pipe 353 and the third inclined pipeline 700, the kiln dust discharged by the bag type dust collector 550 directly falls onto the second zipper conveyor 650, the second zipper conveyor 650 conveys the kiln dust to the third zipper conveyor 750, and then the kiln dust is conveyed into the kiln dust bin 250 through the second bucket elevator 600.

In some embodiments, as shown in fig. 1, the kiln dust and cement raw material warehousing system further comprises a humidifying tower 800, a fourth zipper conveyor 850 is arranged below the humidifying tower 800 and used for receiving kiln dust discharged from the humidifying tower 800, and a discharge end of the fourth zipper conveyor 850 is communicated with the third zipper conveyor 750. Kiln dust discharged from the humidifying tower 800 directly falls onto a fourth zipper conveyor 850, and the kiln dust is conveyed to a third zipper conveyor 750 by the fourth zipper conveyor 850 and then conveyed into the kiln dust bin 250 by a second bucket elevator 600. Therefore, the present embodiment also enables the kiln dust discharged from the humidifying tower 800 to enter the kiln dust bin 250.

In some embodiments, a portion of the kiln dust in the moisturization tower 800 can also fall onto the first zipper conveyor 300 and then into the tee duct 350.

In some embodiments, as shown in fig. 1, the feeding end of the first inclined conduit 400 is higher than the discharging end of the second inclined conduit 450, the second bucket elevator 600 is disposed between the first inclined conduit 400 and the second inclined conduit 450, and the discharging end of the second inclined conduit 450 is communicated with the lower end of the second bucket elevator 600. The cement raw meal conveyed through the second inclined duct 450 is conveyed into the first inclined duct 400 by the second bucket elevator 600, and finally enters the raw meal silo 200.

The second bucket elevator 600 transports both the kiln dust from the third zipper conveyor 750 and the cement raw meal from the second inclined duct 450. In some embodiments, the second bucket elevator 600 is connected to the kiln dust bin 250 through a material conveying pipeline 900, a branch pipe 901 is arranged on the material conveying pipeline 900, the branch pipe 901 is connected to the first inclined pipeline 400, a third control valve 902 is arranged at the discharging end of the material conveying pipeline 900, and a fourth control valve 903 is arranged at the feeding end of the branch pipe 901. When the third control valve 902 and the fourth control valve 903 are opened, the material conveying pipeline 900 and the branch pipe 901 can realize material discharging. The kiln dust enters the material conveying pipeline 900 through the second bucket elevator 600, and then enters the kiln dust bin 250. The cement raw material enters the material conveying pipeline 900 through the second bucket elevator 600, then enters the branch pipe 901, then enters the first inclined pipeline 400, and finally enters the raw material warehouse 200.

In some embodiments, the third control valve 902 and the fourth control valve 903 are both gate valves. The gate valve is one of the most commonly used cut-off valves, is mainly used for connecting or cutting off media in pipelines, is particularly applied to pipelines with medium and large diameters, meets the use requirements of actual engineering, and has good actual use effect.

In some embodiments, as shown in fig. 1, the first inclined pipe 400, the second inclined pipe 450 and the third inclined pipe 700 are all at an angle of 8 ° with respect to the horizontal plane, so that the material can slide down along the inclined pipes to realize the position shift of the material.

In order to facilitate the uniform distribution of the mixed materials of the cement raw materials and the kiln dust, in some embodiments, as shown in fig. 1, a distributor 950 is disposed at the upper end of the raw material warehouse 200, the distributor 950 is communicated with the raw material warehouse 200 through six distribution inclined pipelines 951, and the six distribution inclined pipelines 951 are uniformly distributed along the circumferential direction of the raw material warehouse 200, so that the mixed materials of the cement raw materials and the kiln dust are uniformly distributed in the raw material warehouse 200, and the homogenization effect of the raw material warehouse 200 is improved.

The heights of the feed ports of the six distribution inclined pipes 951 should be maintained at proper heights so as to prevent the material layer in the distributor 950 from being too thick, thereby ensuring smooth material conveyance.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; 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 application.

Claims (10)

1. A kiln dust and cement raw material warehousing system is characterized by comprising: a waste heat boiler, a cyclone dust collector, a raw material warehouse and a kiln ash warehouse,

a first zipper conveyor is arranged below the waste heat boiler and used for receiving kiln dust discharged by the waste heat boiler, a three-way pipeline is arranged at one end of the first zipper conveyor and comprises a feeding pipe, a first discharging pipe and a second discharging pipe, the feeding pipe is communicated with the first zipper conveyor, a first inclined pipeline is arranged below the first discharging pipe and is indirectly communicated with the raw material warehouse, the second discharging pipe is indirectly communicated with the kiln dust warehouse, a first control valve is arranged on the first discharging pipe, a second control valve is arranged on the second discharging pipe, and the first control valve and the second control valve are respectively used for controlling the connection and disconnection of the first discharging pipe and the second discharging pipe;

and a second inclined pipeline is arranged below the cyclone dust collector and used for receiving cement raw materials discharged by the cyclone dust collector, and the second inclined pipeline is indirectly communicated with the first inclined pipeline.

2. The kiln dust and cement raw material warehousing system of claim 1, wherein the first control valve and the second control valve are gate valves.

3. The kiln dust and cement raw material warehousing system of claim 2, further comprising a first bucket elevator, wherein a lower end of the first bucket elevator is communicated with a discharge end of the first inclined pipeline, and an upper end of the first bucket elevator is communicated with the raw material warehouse.

4. The kiln dust and cement raw material warehousing system of claim 3, further comprising a bag filter and a second bucket elevator, wherein a second zipper conveyor is arranged below the bag filter and used for receiving kiln dust discharged by the bag filter, the second discharge pipe is communicated with the second zipper conveyor through a third inclined pipeline,

a third zipper conveyor is arranged below the second zipper conveyor and used for receiving kiln dust conveyed by the second zipper conveyor, the discharge end of the third zipper conveyor is communicated with the second bucket elevator, and the upper end of the second bucket elevator is indirectly communicated with the kiln dust bin.

5. The kiln dust and cement raw material warehousing system as claimed in claim 4, further comprising a humidifying tower, wherein a fourth zipper conveyor is arranged below the humidifying tower and used for receiving kiln dust discharged from the humidifying tower, and a discharge end of the fourth zipper conveyor is communicated with the third zipper conveyor.

6. Kiln dust and cement raw material warehousing system according to claim 5, characterized in that the second bucket elevator is arranged between the first inclined duct and the second inclined duct, the feeding end of the first inclined duct is higher than the discharging end of the second inclined duct, and the discharging end of the second inclined duct is communicated with the lower end of the second bucket elevator.

7. The kiln dust and cement raw material warehousing system as claimed in claim 6, wherein the second bucket elevator is connected to the kiln dust bin through a delivery pipe, the delivery pipe is provided with a branch pipe, the branch pipe is connected to the first inclined pipe, the delivery pipe is provided with a third control valve at its discharge end, and the branch pipe is provided with a fourth control valve at its feed end.

8. The kiln dust and cement raw material warehousing system of claim 7, wherein the third control valve and the fourth control valve are gate valves.

9. Kiln dust and cement raw material warehousing system according to claim 8, characterized in that the first inclined duct, the second inclined duct and the third inclined duct are all at an angle of 8 ° to the horizontal.

10. Kiln dust and cement raw meal warehousing system according to any of claims 1 to 9, characterized in that the upper end of the raw meal warehouse is provided with a distributor which is communicated to the raw meal warehouse by six distribution inclined ducts which are evenly distributed along the circumferential direction of the raw meal warehouse.

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