CN220893009U - Iron-making smoke dust treatment system - Google Patents
Iron-making smoke dust treatment system Download PDFInfo
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- CN220893009U CN220893009U CN202420672837.XU CN202420672837U CN220893009U CN 220893009 U CN220893009 U CN 220893009U CN 202420672837 U CN202420672837 U CN 202420672837U CN 220893009 U CN220893009 U CN 220893009U
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- pipe
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- 239000000428 dust Substances 0.000 title claims abstract description 92
- 239000000779 smoke Substances 0.000 title claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000571 coke Substances 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims description 22
- 238000010926 purge Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002994 raw material Substances 0.000 abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses an ironmaking smoke dust treatment system, which relates to the technical field of ironmaking equipment and also comprises a shell and tube heat exchanger, a controller and a pressure transmitter; the tube side inlet of the tube type heat exchanger is communicated with the blower, the tube side outlet of the tube type heat exchanger is communicated with the inlet of the hot air pipe, and the hot air pipe is provided with a regulating valve; the dust collecting pipe at the inlet of the bag-type dust collector is provided with a pressure transmitter, the pressure transmitter is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the frequency converter of the induced draft fan. The advantages are that: the high-temperature flue gas generated during sinter blanking is utilized to exchange heat with air in the tubular heat exchanger, waste heat recovery is realized, and the heated air is sent into a corresponding iron powder material shed and a coke bin by a hot air pipe so as to dry the iron powder raw material and the coke raw material, reduce moisture and further ensure subsequent sintering efficiency and TRT generated energy.
Description
Technical Field
The utility model relates to the technical field of iron-making equipment, in particular to an iron-making smoke dust treatment system.
Background
The main raw materials for iron making comprise iron ore, fuel, flux and the like, the raw materials are sequentially fed into a mixer for mixing according to the technological proportioning requirement to form a mixture, the mixture is fed into a shuttle-type material distribution belt for distribution to a sintering machine through a belt conveyor, and sintered ores are sintered by the sintering machine, and are the main raw materials for blast furnace iron making; sintering machine exhaust sinter temperature is higher, falls to the breaker from the platform truck upper position of sintering machine and carries out the breakage, and the cover is equipped with the suction hood in platform truck material level department, and under the negative pressure, the smoke and dust is through suction hood and corresponding dust absorption pipeline suction, contains thermal flue gas direct evacuation after the dust removal, causes the heat energy extravagant.
The coke raw material in the coke bin is a carbon component for providing heat energy and reduction reaction for blast furnace ironmaking, the water content of the coke raw material is large, the water content of the gas generated after the coke raw material is added into the blast furnace is high, so that the condensed water of a gas pipeline is increased, the gas entering a blast furnace gas residual pressure turbine power generation device (namely TRT) accelerates the corrosion of TRT blades, and the generated energy of the TRT is reduced; the iron powder raw materials for preparing the sinter are water-containing minerals, and along with the reduction of weather temperature, the iron powder stacked in the material shed has serious caking, and the current treatment measure is to add a dryer to dry and pulverize the minerals so as to prevent the normal sintering, but the drying of a large amount of water-containing minerals such as iron powder needs to consume a large amount of electric energy, and the cost is high.
In addition, the crushed and screened sintered mineral materials and other raw materials are required to be sent into an overhead bin for mixing through corresponding belt conveyors, dust collection covers are covered at the material falling positions of the belt conveyors on site, and under the action of a draught fan, dust is sucked away through the dust collection covers and corresponding dust collection pipelines and is sent into a bag-type dust collector after passing through a dust collecting pipe; because the limit of overhead feed bin material level, the operating mode of each belt feeder is intermittent type formula and opens and stop, when certain belt feeder is shut down, the valve on the corresponding dust collecting pipeline of interlocking closes, if the draught fan works with same frequency all the time, causes the electric energy loss serious, and manufacturing cost is high.
Disclosure of utility model
The utility model aims to provide an ironmaking smoke dust treatment system which is beneficial to reducing energy consumption.
The utility model is implemented by the following technical scheme: an iron-making smoke dust treatment system comprises a sintering machine, an overhead bin, a dust hood covered at a blanking position of a trolley of the sintering machine, and a dust hood covered at a feeding position of the overhead bin, wherein a top outlet of the dust hood is communicated with a dust collecting pipe through a dust collecting pipeline; the dust collecting pipe is communicated with the inlet of the bag-type dust remover, and the outlet of the bag-type dust remover is communicated with the inlet of the induced draft fan; the system also comprises a shell and tube heat exchanger, a controller and a pressure transmitter; the top outlet of the dust hood is communicated with a shell side air inlet of the shell side heat exchanger through a dust collection pipeline, the shell side air outlet of the shell side heat exchanger is communicated with the dust collecting pipe through a pipeline, and pneumatic valves are respectively arranged on the dust collection pipeline and the dust collection pipeline; the tube side inlet of the tube type heat exchanger is communicated with the blower, the tube side outlet of the tube type heat exchanger is communicated with the inlet of the hot air pipe, and the hot air pipe is provided with the regulating valve; the dust collecting pipe at the inlet of the bag-type dust collector is provided with the pressure transmitter, the pressure transmitter is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the frequency converter of the induced draft fan and the electric regulating valve.
Further, the hot air pipes are uniformly distributed in the iron powder storage shed and the coke bin, the regulating valves are electric valves, temperature transmitters are respectively arranged in the iron powder storage shed and the coke bin, the temperature transmitters are electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the regulating valves.
Further, an air filter is installed at the air inlet of the blower.
Further, it also includes a nitrogen tank and a nitrogen purge tube; the gas outlet of the nitrogen tank is communicated with one end of the nitrogen purging pipe, and the other end of the nitrogen purging pipe is communicated with the ash bin; the bottom discharge port of the bag-type dust collector is communicated with the nitrogen purging pipe, and the top of the ash bin is provided with a filtering check valve.
The utility model has the advantages that: the high-temperature flue gas generated during sinter blanking is utilized to exchange heat with air in the tubular heat exchanger, waste heat recovery is realized, and the heated air is sent into a corresponding iron powder material shed and a coke bin by a hot air pipe so as to dry the iron powder raw material and the coke raw material, reduce moisture and further ensure subsequent sintering efficiency and TRT generated energy.
When a certain belt conveyor at the overhead bin is stopped, signals are fed back to the controller, the corresponding pneumatic valve is controlled to be closed, meanwhile, the corresponding pressure set value is compared with the pressure value detected by the pressure transmitter at the moment, and the frequency converter of the induced draft fan is controlled to convert frequency, so that the current negative pressure requirement is met, the electric energy is saved, and the production cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present utility model.
The components in the drawings are marked as follows: the sintering machine 1, an overhead bin 2, a dust hood 3, a dust hood 4, a dust collecting pipeline 5, a dust collecting pipe 6, a bag-type dust remover 7, an induced draft fan 8, a tube type heat exchanger 9, a controller 10, a pressure transmitter 11, a dust collecting pipeline 12, a pneumatic valve 13, an iron powder shed 14, a coke bin 15, a hot air pipe 16, a blower 17, a regulating valve 18, a temperature transmitter 19, an air filter 20, a nitrogen tank 21, a nitrogen purging pipe 22, an ash bin 23 and a filtering check valve 24.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The utility model is further described below with reference to the accompanying drawings:
As shown in fig. 1, the embodiment provides an ironmaking dust treatment system, which comprises a sintering machine 1, an overhead bin 2, a dust hood 3 covered at the blanking position of a trolley of the sintering machine 1, and a dust hood 4 covered at the feeding position of the overhead bin 2, wherein the top outlet of the dust hood 4 is communicated with a dust collecting pipe 6 through a dust collecting pipeline 5; the dust collecting pipe 6 is communicated with the inlet of the bag-type dust remover 7, and the outlet of the bag-type dust remover 7 is communicated with the inlet of the induced draft fan 8; under the action of negative pressure formed by the induced draft fan 8, dust at the blanking position of the trolley of the sintering machine 1 is sucked by the dust collection cover 3, enters the dust collection pipe 6 along the dust collection pipeline 12, and dust generated in the blanking process of the feeding position of the raw material conveyor conveyed to the overhead bin 2 sequentially enters the dust collection pipeline 5 and the dust collection pipe 6 by the dust collection cover 4; the smoke dust in the dust collecting pipe 6 enters a cloth bag dust remover 7, and after dust removal, the gas is exhausted by an induced draft fan 8; the dust collection pipeline 5 and the dust collection pipeline 12 are respectively provided with a pneumatic valve 13, and the working conditions of the raw material belt conveyors are intermittent start and stop due to the limitation of the material level of the overhead bin 2, and when a certain belt conveyor is stopped, the pneumatic valve 13 corresponding to the interlocking is closed.
It also comprises a shell and tube heat exchanger 9, a controller 10 and a pressure transmitter 11; the top outlet of the dust hood 3 is communicated with a shell side air inlet of the shell side heat exchanger 9 through a dust collection pipeline 12, and the shell side air outlet of the shell side heat exchanger 9 is communicated with a dust collecting pipe 6 through a pipeline; the tube side inlet of the tube type heat exchanger 9 is communicated with the air blower 17, an air filter 20 is arranged at the air inlet of the air blower 17, and the air before entering the air blower 17 is filtered, so that the cleanliness of the air entering the tube type heat exchanger 9 is ensured; hot air pipes 16 are uniformly distributed in the iron powder material shed 14 and the coke bin 15, the tube side outlet of the tube type heat exchanger 9 is communicated with the inlet of the hot air pipe 16, and an adjusting valve 18 is arranged on the hot air pipe 16; the high-temperature flue gas generated during the blanking of the sinter is utilized to exchange heat with the air in the shell and tube heat exchanger 9, so that waste heat recovery is realized, and the heated air is sent into the corresponding iron powder material shed 14 and the coke bin 15 by the hot air pipe 16, so that the iron powder raw material and the coke raw material are dried, the moisture is reduced, and the subsequent sintering efficiency and the generated energy of TRT are further ensured; compared with the prior art, the electric energy consumption caused by utilizing the dryer is avoided, and the effect of reducing the energy consumption is achieved.
A pressure transmitter 11 is arranged on the dust collecting pipe 6 at the inlet of the bag-type dust collector 7, the pressure transmitter 11 is electrically connected with the input end of a controller 10, and the output end of the controller 10 is electrically connected with a frequency converter of an induced draft fan 8 and an electric regulating valve 18; when a certain belt conveyor at the overhead bin 2 is stopped, signals are fed back to the controller 10, the corresponding pneumatic valve 13 is controlled to be closed, meanwhile, the corresponding pressure set value is compared with the pressure value detected by the pressure transmitter 11 at the moment, and the frequency converter of the induced draft fan 8 is controlled to convert frequency so as to adapt to the current negative pressure requirement, so that the electric energy is saved, and the production cost is reduced; namely, when one of the belt conveyors is stopped, in order to reduce the electricity consumption of the induced draft fan 8, the controller 10 is used for controlling the fan to reduce the frequency in a feedback manner; when the belt conveyor is restarted, the feedback control induced draft fan 8 increases the frequency so as to ensure the negative pressure requirement of smoke dust extraction.
The regulating valve 18 is an electric valve, temperature transmitters 19 are respectively arranged in the iron powder shed 14 and the coke bin 15, the temperature transmitters 19 are electrically connected with the input end of the controller 10, and the output end of the controller 10 is electrically connected with the regulating valve 18; the temperature in the iron powder shed 14 and the coke bin 15 is detected in real time through the temperature transmitter 19 and fed back to the controller 10, and the opening degree of the regulating valve 18 is controlled through the controller 10 to regulate the hot air quantity so as to meet the requirements of raw material drying.
The device also comprises a nitrogen tank 21 and a nitrogen purging pipe 22, wherein the air outlet of the nitrogen tank 21 is communicated with one end of the nitrogen purging pipe 22, and the other end of the nitrogen purging pipe 22 is communicated with an ash bin 23; the bottom discharge port of the bag-type dust collector 7 is communicated with a nitrogen purging pipe 22, and a filtering check valve 24 is arranged at the top of an ash bin 23; the dust filtered in the bag-type dust collector 7 is conveyed into the ash bin 23 through nitrogen, so that concentrated recovery is realized, and the nitrogen entering the ash bin 23 is filtered through the filtering check valve 24 and then is emptied.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.
Claims (4)
1. An iron-making smoke dust treatment system comprises a sintering machine, an overhead bin, a dust hood covered at a blanking position of a trolley of the sintering machine, and a dust hood covered at a feeding position of the overhead bin, wherein a top outlet of the dust hood is communicated with a dust collecting pipe through a dust collecting pipeline; the dust collecting pipe is communicated with the inlet of the bag-type dust remover, and the outlet of the bag-type dust remover is communicated with the inlet of the induced draft fan;
The device is characterized by further comprising a shell and tube heat exchanger, a controller and a pressure transmitter; the top outlet of the dust hood is communicated with a shell side air inlet of the shell side heat exchanger through a dust collection pipeline, the shell side air outlet of the shell side heat exchanger is communicated with the dust collecting pipe through a pipeline, and pneumatic valves are respectively arranged on the dust collection pipeline and the dust collection pipeline;
The tube side inlet of the tube type heat exchanger is communicated with the blower, the tube side outlet of the tube type heat exchanger is communicated with the inlet of the hot air pipe, and the hot air pipe is provided with the regulating valve;
The dust collection pipe at the inlet of the bag-type dust collector is provided with the pressure transmitter, the pressure transmitter is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the frequency converter of the induced draft fan.
2. The iron making smoke dust treatment system according to claim 1, wherein the hot air pipes are uniformly distributed in the iron powder material shed and the coke bin, the regulating valves are electric valves, temperature transmitters are respectively arranged in the iron powder material shed and the coke bin, the temperature transmitters are electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the regulating valves.
3. An ironmaking dust treatment system as claimed in claim 1, wherein an air filter is installed at an air inlet of the blower.
4. A system for treating iron-making dust according to any one of claims 1 to 3, further comprising a nitrogen tank and a nitrogen purge pipe; the gas outlet of the nitrogen tank is communicated with one end of the nitrogen purging pipe, and the other end of the nitrogen purging pipe is communicated with the ash bin; the bottom discharge port of the bag-type dust collector is communicated with the nitrogen purging pipe, and the top of the ash bin is provided with a filtering check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420672837.XU CN220893009U (en) | 2024-04-03 | 2024-04-03 | Iron-making smoke dust treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420672837.XU CN220893009U (en) | 2024-04-03 | 2024-04-03 | Iron-making smoke dust treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220893009U true CN220893009U (en) | 2024-05-03 |
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ID=90837057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420672837.XU Active CN220893009U (en) | 2024-04-03 | 2024-04-03 | Iron-making smoke dust treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220893009U (en) |
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- 2024-04-03 CN CN202420672837.XU patent/CN220893009U/en active Active
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