CN212253141U - Energy-concerving and environment-protective vertical stoving milling system device - Google Patents
Energy-concerving and environment-protective vertical stoving milling system device Download PDFInfo
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- CN212253141U CN212253141U CN202020847539.1U CN202020847539U CN212253141U CN 212253141 U CN212253141 U CN 212253141U CN 202020847539 U CN202020847539 U CN 202020847539U CN 212253141 U CN212253141 U CN 212253141U
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Abstract
An energy-saving environment-friendly vertical drying and grinding system device comprises a hot blast stove, a vertical grinding machine, a powder collector, a high-pressure centrifugal draught fan, a pipeline valve, a chimney, an inter-equipment connecting pipeline and the like; the hot blast stove, the vertical mill, the powder collector and the high-pressure centrifugal draught fan are sequentially connected through a closed pipeline, the waste gas of the high-pressure centrifugal draught fan is classified into two paths through the closed pipeline, one path of the waste gas is discharged into the atmosphere through a chimney through the closed pipeline, and the other path of the waste gas is used as circulating tail gas and enters a hearth of the hot blast stove through the closed pipeline; valves are arranged on a closed pipeline from the high-pressure centrifugal draught fan to the chimney and a closed pipeline from the high-pressure centrifugal draught fan to the hot blast stove; the high-pressure centrifugal induced draft fan is arranged on a chimney of the hot blast stove, and valves arranged on a closed pipeline from the high-pressure centrifugal induced draft fan to the chimney and a closed pipeline from the high-pressure centrifugal induced draft fan to the hot blast stove are electrically operated valves; the temperature sensor, the temperature controller and the electric valve are electrically connected in sequence.
Description
Technical Field
The utility model belongs to the technical field of the material is dried, especially relate to the vertical stoving grinding technical field who regards as the fuel of drying with gas or fuel.
Background
In the traditional vertical drying and grinding process, hot air is input into a vertical mill, and moisture in materials is dried while the materials are ground; the dried and ground gas-powder mixture enters a powder collector from an air outlet of the vertical mill through a closed pipeline, the powder collector separates gas and powder, and separated waste gas is discharged by a high-pressure centrifugal induced draft fan through the closed pipeline; burning fuel gas or fuel oil in a hot blast stove to generate high-temperature flue gas with more than one thousand degrees, wherein one end of a high-temperature flue gas pipeline is connected with an air outlet of the hot blast stove, and the other end of the high-temperature flue gas pipeline is connected with an air inlet of a vertical mill; the high-temperature flue gas pipeline is provided with an air collecting box, and a cold air valve is arranged in front of the air collecting box of the high-temperature flue gas pipeline to supplement natural air; the high-pressure centrifugal draught fan discharges waste gas at the temperature of about 80-100 ℃, one part of the waste gas is used as circulating tail gas and flows to the air collecting box through a pipeline, and the other part of the waste gas is discharged into the atmosphere through a chimney. And high-temperature flue gas generated by combustion in the hot blast stove is mixed with natural air supplemented by the cold air valve, the temperature of the flue gas is reduced to a certain temperature, and the flue gas is further fully mixed with circulating tail gas in the air collecting box to form flue gas with the temperature of about 180-320 ℃, and the flue gas is input into a vertical mill for drying materials through a closed pipeline.
Disclosure of Invention
The utility model discloses a novel technology and equipment are taken promptly to the purpose, reduce the fuel consumption of system and reduce exhaust emission.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an energy-saving environment-friendly vertical drying and grinding system device comprises a hot blast stove, a vertical grinding machine, a powder collector, a high-pressure centrifugal draught fan, a pipeline valve, a chimney, a closed pipeline connected between equipment and the like; the air outlet of the hot blast stove is connected with the air inlet of the vertical mill through a closed pipeline, the air outlet of the vertical mill is connected with the air inlet of the powder collector through a closed pipeline, and the air outlet of the powder collector is connected with the air inlet of the high-pressure centrifugal draught fan through a closed pipeline; waste gas discharged by the high-pressure centrifugal draught fan is classified into two paths through a closed pipeline, one path is discharged into the atmosphere through a chimney through the closed pipeline, and the other path is used as circulating tail gas and enters a hearth of the hot blast stove through the closed pipeline; valves are arranged on a closed pipeline from the high-pressure centrifugal induced draft fan to the chimney and a closed pipeline from the high-pressure centrifugal induced draft fan to the hot blast stove; the high-pressure centrifugal draught fan is connected with the chimney through a pipeline, and the high-pressure centrifugal draught fan is connected with the chimney through a pipeline; and the temperature sensor, the temperature controller and the electric valve are electrically connected in sequence.
Further, the temperature controller is an internal cascade double-loop controller.
Further, the electric valve is integrated with the actuator and the valve body.
Furthermore, the hot blast stove structure is a structure for ensuring that the circulating tail gas and high-temperature flue gas generated by direct combustion of fuel are gradually mixed.
Furthermore, the structure for gradually mixing the high-temperature flue gas of the hot blast stove is specifically a spiral-flow volute arranged on the stove body, and the circulating tail gas is gradually mixed with the high-temperature flue gas generated by directly burning the fuel through the spiral-flow volute.
Has the advantages that:
1. reduce fuel consumption and CO2、NOXAnd (5) discharging.
2. The recycling utilization rate of hot waste gas is improved, and the amount of waste gas discharged from a chimney is reduced, so that the total amount of dust discharged by a system is reduced.
3. The low-temperature circulating tail gas is directly mixed with the hot blast stove hearthThe high-temperature flue gas generated by fuel combustion is gradually mixed, the flame temperature is reduced, and the thermal NO is further reducedXThe amount of production of (c).
4. Part of combustion-supporting air for fuel combustion is low-oxygen-content circulating tail gas, so that the whole oxygen content of the combustion-supporting air is reduced, and the reduction of thermal NO is facilitatedXThe amount of production of (c).
5. The temperature of the outlet of the hot blast stove is collected through the controller, the control of the opening degree of the two valves is controlled, the labor and time cost is saved, and meanwhile, the requirements of different processes are met.
Drawings
FIG. 1: a schematic diagram of a traditional vertical drying and grinding process;
FIG. 2: the structure and the connection relation of the utility model are shown schematically;
the release is as follows: 1-hot blast stove 2-vertical mill 3-powder collector 4-high pressure centrifugal draught fan 5-pipeline valve
6-chimney 7-closed pipeline 8-temperature controller 9-temperature sensor.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
an energy-saving environment-friendly vertical drying and grinding system device comprises a hot blast stove 1, a vertical mill 2, a powder collector 3, a high-pressure centrifugal draught fan 4, a pipeline valve 5, a chimney 6, a closed pipeline 7 connected between devices and the like; the air outlet of the hot blast stove 1 is connected with the air inlet of the vertical mill 2 through a closed pipeline 7, the air outlet of the vertical mill 2 is connected with the air inlet of the powder collector 3 through a closed pipeline 7, and the air outlet of the powder collector 3 is connected with the air inlet of the high-pressure centrifugal draught fan 4 through a closed pipeline 7; waste gas discharged by the high-pressure centrifugal draught fan 4 is classified into two paths through a closed pipeline 7, one path is discharged into the atmosphere through a chimney 6 through the closed pipeline 7, and the other path is used as circulating tail gas and enters a hearth of the hot blast stove 1 through the closed pipeline 7; a valve 5 is arranged on a closed pipeline from the high-pressure centrifugal draught fan 4 to the chimney 6 and a closed pipeline from the high-pressure centrifugal draught fan 4 to the hot blast stove 1; the device also comprises a temperature controller 8 and a temperature sensor 9 arranged at a hot blast stove mouth, wherein valves arranged on a closed pipeline from the high-pressure centrifugal draught fan 4 to the chimney 6 and a closed pipeline from the high-pressure centrifugal draught fan 4 to the hot blast stove 1 are electrically operated valves; the temperature sensor 9, the temperature controller 8 and the electric valve 5 are electrically connected in sequence. The temperature controller 8 is an internal cascade double-loop controller. The electric valve 5 is integrated with the actuator and the valve body.
The hot blast stove 1 is a structure for ensuring that the circulating tail gas and high-temperature flue gas generated by direct combustion of fuel gradually mix, and specifically can be a spiral-flow volute arranged on a stove body, and the circulating tail gas is gradually mixed with the high-temperature flue gas generated by direct combustion of the fuel through the spiral-flow volute. Of course, other modes can be adopted as long as the circulating tail gas can be gradually mixed with the high-temperature flue gas generated by the direct combustion of the fuel.
When the recycling amount of the circulating tail gas needs to be increased, two controller loops are started, and the air supplement amount of the two loops is balanced and controlled, so that the production of different raw materials can be realized. When the conversion of different raw materials is carried out, the debugging work of the whole set of equipment can be completed only by starting the self-adaptive function of the temperature controller, and when large disturbance occurs in the running process of the system, the self-adaptive function of the controller can also react rapidly, and the performance of the whole system cannot be influenced.
By recycling the circulating tail gas, the tail gas emission is effectively reduced, the excessive pollution to the atmosphere in the production process is avoided, and meanwhile, the residual heat in the tail gas is utilized, so that the energy-saving effect is achieved; and through the addition to controller, sensor motor, can add to different raw and other materials man-hour, set for the temperature according to concrete technology fast, realize automatic control, practiced thrift the debugging link to the combustion heat of gas or fuel of utilization of great efficiency avoids the energy extravagant.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An energy-saving environment-friendly vertical drying and grinding system device comprises a hot blast stove, a vertical grinding machine, a powder collector, a high-pressure centrifugal draught fan, a pipeline valve, a chimney, a closed pipeline connected between equipment and the like; the air outlet of the hot blast stove is connected with the air inlet of the vertical mill through a closed pipeline, the air outlet of the vertical mill is connected with the air inlet of the powder collector through a closed pipeline, and the air outlet of the powder collector is connected with the air inlet of the high-pressure centrifugal draught fan through a closed pipeline; waste gas discharged by the high-pressure centrifugal draught fan is classified into two paths through a closed pipeline, one path is discharged into the atmosphere through a chimney through the closed pipeline, and the other path is used as circulating tail gas and enters a hearth of the hot blast stove through the closed pipeline; valves are arranged on a closed pipeline from the high-pressure centrifugal induced draft fan to the chimney and a closed pipeline from the high-pressure centrifugal induced draft fan to the hot blast stove; the device is characterized by also comprising a temperature controller and a temperature sensor arranged at a hot blast furnace mouth, wherein valves arranged on a closed pipeline from the high-pressure centrifugal draught fan to the chimney and a closed pipeline from the high-pressure centrifugal draught fan to the hot blast furnace are electric valves; and the temperature sensor, the temperature controller and the electric valve are electrically connected in sequence.
2. The apparatus of claim 1, wherein the temperature controller is an internal cascade dual-loop controller.
3. The apparatus as claimed in claim 1, wherein the electrically operated valve is integrated with an electrically operated actuator.
4. The energy-saving environment-friendly vertical drying and pulverizing system device as claimed in any one of claims 1-3, wherein the hot blast stove structure is a structure for ensuring gradual mixing of the circulating tail gas and high-temperature flue gas generated by direct combustion of fuel.
5. The apparatus as claimed in claim 2, wherein the electrically operated valve is integrated with an electrically operated actuator.
6. The energy-saving and environment-friendly vertical drying and pulverizing system device as claimed in claim 5, wherein the hot blast stove structure is a structure for ensuring gradual mixing of the circulating tail gas and high-temperature flue gas generated by direct combustion of fuel.
7. The energy-saving environment-friendly vertical drying and grinding system device according to claim 4, wherein the structure for gradually mixing the high-temperature flue gas is a spiral-flow volute arranged on the furnace body, and the circulating tail gas is gradually mixed with the high-temperature flue gas generated by direct combustion of the fuel through the spiral-flow volute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020847539.1U CN212253141U (en) | 2020-05-20 | 2020-05-20 | Energy-concerving and environment-protective vertical stoving milling system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020847539.1U CN212253141U (en) | 2020-05-20 | 2020-05-20 | Energy-concerving and environment-protective vertical stoving milling system device |
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| Publication Number | Publication Date |
|---|---|
| CN212253141U true CN212253141U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020847539.1U Active CN212253141U (en) | 2020-05-20 | 2020-05-20 | Energy-concerving and environment-protective vertical stoving milling system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212253141U (en) |
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2020
- 2020-05-20 CN CN202020847539.1U patent/CN212253141U/en active Active
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