CN217560319U

CN217560319U - Energy-conserving production system of gangue haydite

Info

Publication number: CN217560319U
Application number: CN202221555198.6U
Authority: CN
Inventors: 徐铭威; 许文斌; 宁阳; 杨晓东
Original assignee: Henan Zhengzhou Mining Machinery Co ltd
Current assignee: Henan Zhengzhou Mining Machinery Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-10-11
Anticipated expiration: 2032-06-21

Abstract

The utility model relates to an energy-conserving production system of gangue haydite relates to gangue production technical field. The device comprises a dryer, a rotary kiln and a cooler which are sequentially arranged on a coal gangue conveying path, and further comprises a heat conduction system connected with the cooler and the dryer, wherein the heat conduction system comprises a heat conduction pipeline, a heat conduction control valve arranged on the heat conduction pipeline to control the heat conduction pipeline to be communicated and closed, and a dust remover arranged on the heat conduction pipeline, an inlet of the heat conduction pipeline is communicated with the cooler, and an outlet of the heat conduction pipeline is communicated with the dryer. The system can effectively realize the control of the temperature in the rotary kiln, improve the quality of the ceramsite and reduce agglomeration.

Description

Energy-conserving production system of gangue haydite

Technical Field

The utility model relates to an energy-conserving production system of gangue haydite relates to gangue production technical field.

Background

The coal gangue is solid waste produced in the coal mining and washing processes, is a black grey rock which is harder than coal and is associated with a coal bed in the coal forming process, and mainly comprises Al2O3 and SiO2. According to statistical data, the storage of coal gangue in 2019 nationwide is about 65-70 hundred million tons, and the coal gangue accounts for about 40% of the solid waste amount in China, so that the resource utilization approach of the coal gangue is particularly necessary to be found.

The method for producing the ceramsite by utilizing the coal gangue is an effective method for comprehensively utilizing the ceramsite, and on one hand, the coal gangue can be greatly consumed; on the other hand, the consumption of clay raw materials is saved, and the method has good recycling value and economic benefit.

The existing preparation process for producing the coal gangue ceramsite adopts the main scheme that a coal gangue raw material is sequentially produced through a dryer, a rotary kiln and a cooler, but in the existing coal gangue cooling process, certain heat exists in the coal gangue and is only cooled by the cooler, so that a large amount of heat is wasted.

Disclosure of Invention

The utility model aims at providing a gangue haydite energy-conserving production system to solve the extravagant technical problem of energy that exists among the prior art.

In order to solve the problem, the utility model relates to a gangue haydite energy-saving production system adopts following technical scheme:

the utility model provides an energy-conserving production system of gangue haydite, include the drying-machine, rotary kiln, the cooler that set gradually on gangue delivery route, still including the heat transfer system who connects cooler and drying-machine, heat transfer system includes the heat transfer pipeline, install on the heat transfer pipeline with the heat transfer control valve that control heat transfer pipeline leads to closedly, set up the dust remover on the heat transfer pipeline, the import and the cooler intercommunication of heat transfer pipeline, the export and the drying-machine intercommunication of heat transfer pipeline.

Preferably, the kiln middle section of the rotary kiln is provided with an induced air pipeline communicated with the interior of the kiln, the induced air pipeline is provided with an induced air control valve for controlling the opening and closing of the induced air pipeline, the induced air pipeline is connected with an induced draft fan, and the induced draft fan is connected to a pipeline between the dust remover and the induced air control valve through a pipeline.

Preferably, the rotary kiln further comprises a temperature sensor, the temperature sensor is arranged in the middle kiln section of the rotary kiln, and the temperature sensor is used for transmitting temperature information to the controller and controlling the opening and closing of the induced air control valve through the controller.

Preferably, the middle kiln section of the rotary kiln is provided with a heat inducing air pipeline communicated with the interior of the rotary kiln, the heat inducing air pipeline is provided with a temperature sensor for measuring the heat in the heat inducing air pipeline, and the temperature sensor is used for transmitting temperature information to the controller and controlling the opening and closing of the air inducing control valve and the opening and closing of the heat inducing control valve through the controller.

Preferably, the discharge port of the rotary kiln is connected with the feed port of the cooler through a sealed pipeline, and the heat-inducing pipeline is communicated with a pipeline between the discharge port of the rotary kiln and the feed port of the cooler.

Preferably, the drying machine also comprises a belt conveyor for conveying the raw coal gangue ceramsite pellets to the drying machine, wherein the discharge end of the belt conveyor is positioned on the upper side of the feed inlet of the drying machine, so that the raw coal gangue ceramsite pellets can fall into the feed inlet of the drying machine along the belt conveyor.

Preferably, a kiln inlet chute is arranged at a feed inlet of the rotary kiln, an air locking valve is arranged on the kiln inlet chute, a large-inclination-angle conveyor used for conveying dried coal gangue to the upper side of the kiln inlet chute is arranged at the lower side of a discharge outlet of the dryer, and a discharge part of the large-inclination-angle conveyor is positioned right above the air locking valve, so that the dried coal gangue can sequentially enter the rotary kiln through the air locking valve and the kiln inlet chute.

Preferably, the induced draft control valve and the induced draft control valve are both provided as electric butterfly valves, and the electric butterfly valves are electrically connected with the controller.

The beneficial effects of the utility model are as follows:

the utility model provides an energy-conserving production system of gangue haydite, compare with prior art, the waste heat that the gangue got into the in-process of cooler produced can be supplied with to the drying-machine in for provide the auxiliary heat to the drying-machine, the setting of this kind of mode can enough reduce the energy consumption of cooler, can reduce the energy consumption of drying-machine again, still set up the dust remover simultaneously on this heat-drawing system, can get rid of the back with hot-blast transport to the drying-machine with the raise dust that comes from the cooler. The device can recycle heat energy, and achieves the effects of energy conservation and consumption reduction.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described as follows:

FIG. 1 is a flow chart of an energy-saving production system for coal gangue ceramsite.

Description of reference numerals: 1. a dryer; 2. a rotary kiln; 3. a cooling machine; 4. a heat-initiating control valve; 5. a dust remover; 6. an induced draft pipeline; 7. an induced draft control valve; 8. an induced draft fan; 9. A large inclination angle conveyor; 10. a belt conveyor; 11. entering a kiln chute; 12. an air lock valve.

Detailed Description

In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

The utility model provides an energy-conserving production system of gangue haydite, as shown in figure 1, because gangue haydite raw meal moisture is great, generally about 20%, need adopt drying-machine 1 to dewater between getting into rotary kiln 2, consequently still add drying-machine 1 before rotary kiln 2, particularly, drying-machine 1 has been laid in proper order on the production route of energy-conserving production system of gangue haydite, rotary kiln 2, cooler 3, the discharge gate of rotary kiln 2 links to each other through sealed pipeline with the feed inlet of cooler 3.

The production system also comprises a heat-conducting system which is connected with the cooler 3 and the dryer 1, the heat-conducting system comprises a heat-conducting pipeline, a heat-conducting control valve 4 which is arranged on the heat-conducting pipeline and used for controlling the heat-conducting pipeline to be communicated and closed, and a dust remover 5 which is arranged on the heat-conducting pipeline, wherein the inlet of the heat-conducting pipeline is communicated with a communication pipeline between the discharge port of the rotary kiln 2 and the feed port of the cooler 3, the outlet of the heat-conducting pipeline is communicated with the feed port of the dryer 1, the temperature of the joint of the kiln head feed opening of the rotary kiln 2 and the feed port of the cooler 3 is higher, the hot flue gas can effectively help the drying of the raw pellets of the coal gangue, on one hand, the cooling speed of finished products of the ceramsite is accelerated, on the other hand, the raw pellets are dried by utilizing the waste heat, the opening of the heat-conducting valve 4 on the heat-conducting pipeline can be adjusted to control the amount of the hot flue gas, meanwhile, the hot flue gas enters the dryer 1 for drying the raw pellets after being dedusted by the dust remover 5, the flue gas and enters the flue gas treatment system which is communicated with the dryers 1 and 2 together with the kiln tail flue gas treatment system, and the contents of the flue gas treatment system which are not specifically stated in the rotary kiln are specifically applied for protecting the rotary kiln, and are not specifically stated.

The dust separator 5 is provided as a cyclone 5.

As the ceramsite kiln needs to control a certain temperature, the ceramsite can be calcined to obtain the best quality, but the temperature in the kiln often fluctuates when the coal gangue is calcined, so that the stability of the temperature in the kiln is influenced, and the temperature can be difficultly regulated and controlled by adjusting the flow of natural gas in a short time. In order to solve the problem, an induced air pipeline 6 communicated with the interior of the kiln is arranged at the middle section of the rotary kiln 2, an induced air control valve 7 for controlling the open and close of the induced air pipeline 6 is arranged on the induced air pipeline 6, the induced air pipeline 6 is connected with an induced draft fan 8, the induced draft fan 8 is connected to a pipeline between the dust remover 5 and the induced heat control valve 4 through a pipeline, and the induced draft fan 8 is used for introducing the furnace temperature at the middle section of the kiln into the dryer 1, so that the temperature at the middle section of the kiln can be reduced, and meanwhile, heat energy can be provided to the dryer 1.

Further, in order to accurately regulate and control the furnace temperature, the system further comprises a temperature sensor, the temperature sensor is arranged in the middle section of the rotary kiln 2, and the temperature sensor is used for transmitting temperature information to the controller and controlling the air inducing control valve 7 to be opened and closed through the controller.

Or the middle kiln section of the rotary kiln 2 is provided with a hot air inducing pipeline communicated with the interior of the kiln, the hot air inducing pipeline is used for inducing heat in the kiln, a temperature sensor for measuring the heat in the hot air inducing pipeline is arranged on the hot air inducing pipeline, the temperature sensor is used for transmitting temperature information to the controller, and the controller is used for controlling the opening and closing of the air inducing control valve 7 and/or the opening and closing of the heat inducing control valve 4.

In the above, the induced air control valve 7 and the induced heat control valve 4 are both set as electromagnetic valves, the controller is electrically connected with the induced draft fan 8 and the electric valve, the temperature sensor feeds signals back to the induced draft fan 8 and the electric valve to be opened, and a part of hot air is introduced to the dryer 1; when the temperature of the sintering section is reduced to a proper temperature section (such as 1200 ℃), the temperature sensor feeds back signals to the induced draft fan 8 and the electric butterfly valve to be closed, so that the temperature in the kiln is controlled within a certain range.

The material transmission between the dryer 1, the rotary kiln 2 and the cooler 3 is completed through a conveyor, and further, the system further comprises a belt conveyor 10 for conveying the raw coal gangue ceramsite balls to the dryer 1, wherein the discharge end of the belt conveyor 10 is positioned on the upper side of the feed inlet of the dryer 1, so that the raw coal gangue ceramsite balls can fall into the feed inlet of the dryer 1 along the belt conveyor 10. A kiln inlet chute 11 is arranged at the feed inlet of the rotary kiln 2, an air locking valve 12 is arranged on the kiln inlet chute 11, a large-inclination-angle conveyor 9 for conveying dried coal gangue to the upper side of the kiln inlet chute 11 is arranged at the lower side of the discharge outlet of the dryer 1, and the discharge part of the large-inclination-angle conveyor 9 is positioned right above the air locking valve 12, so that the dried coal gangue can enter the rotary kiln 2 through the air locking valve 12 and the kiln inlet chute 11 in sequence.

Further, the induced draft control valve 7 and the induced draft control valve 4 are both set to be electric butterfly valves, and the electric butterfly valves are electrically connected with the controller.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. An energy-saving production system for coal gangue ceramsite comprises a dryer, a rotary kiln and a cooler which are sequentially arranged on a coal gangue conveying path, and is characterized by further comprising a heat-leading system connected with the cooler and the dryer, wherein the heat-leading system comprises a heat-leading pipeline, a heat-leading control valve arranged on the heat-leading pipeline to control the on-off of the heat-leading pipeline, and a dust remover arranged on the heat-leading pipeline, the inlet of the heat-leading pipeline is communicated with the cooler, and the outlet of the heat-leading pipeline is communicated with the dryer.

2. The coal gangue ceramsite energy-saving production system as claimed in claim 1, wherein the middle kiln section of the rotary kiln is provided with an induced air pipeline communicated with the interior of the rotary kiln, the induced air pipeline is provided with an induced air control valve for controlling the open and close of the induced air pipeline, the induced air pipeline is connected with an induced draft fan, and the induced draft fan is connected to a pipeline between the dust remover and the induced heat control valve through a pipeline.

3. The coal gangue ceramsite energy-saving production system of claim 2, further comprising a temperature sensor, wherein the temperature sensor is installed in the middle section of the rotary kiln, and the temperature sensor is used for transmitting temperature information to the controller and controlling the open and close of the induced air control valve through the controller.

4. The coal gangue ceramsite energy-saving production system as claimed in claim 2, wherein the middle kiln section of the rotary kiln is provided with a heat inducing pipe communicated with the kiln, the heat inducing pipe is provided with a temperature sensor for measuring the heat therein, the temperature sensor is used for transmitting the temperature information to the controller and controlling the on/off of the air inducing control valve and the on/off of the heat inducing control valve through the controller.

5. The coal gangue ceramsite energy-saving production system as claimed in claim 2, wherein the discharge port of the rotary kiln is connected with the feed port of the cooler through a sealed pipeline, and the heat conducting pipeline is communicated with the pipeline between the discharge port of the rotary kiln and the feed port of the cooler.

6. The energy-saving production system for coal gangue ceramsite as defined in claim 1, further comprising a belt conveyor for conveying the raw coal gangue ceramsite pellets to the dryer, wherein the discharge end of the belt conveyor is located above the feed inlet of the dryer, so that the raw coal gangue ceramsite pellets can fall into the feed inlet of the dryer along the belt conveyor.

7. The energy-saving production system for coal gangue ceramsite as defined in claim 6, wherein a kiln inlet chute is installed at the inlet of the rotary kiln, an air lock valve is installed on the kiln inlet chute, a large-inclination-angle conveyor for conveying the dried coal gangue to the upper side of the kiln inlet chute is installed at the lower side of the outlet of the dryer, and the outlet of the large-inclination-angle conveyor is located right above the air lock valve, so that the dried coal gangue can enter the rotary kiln through the air lock valve and the kiln inlet chute in sequence.

8. The coal gangue ceramsite energy-saving production system as claimed in claim 4 or 5, wherein the induced air control valve and the induced heat control valve are both provided as electric butterfly valves, and the electric butterfly valves are electrically connected with the controller.