CN210021686U - Flue gas recovery and purification device for coke production - Google Patents
Flue gas recovery and purification device for coke production Download PDFInfo
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- CN210021686U CN210021686U CN201920354329.6U CN201920354329U CN210021686U CN 210021686 U CN210021686 U CN 210021686U CN 201920354329 U CN201920354329 U CN 201920354329U CN 210021686 U CN210021686 U CN 210021686U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a flue gas recovery and purification device for coke production, which belongs to the technical field of industrial pollution treatment, and comprises a coke oven, an electrostatic tiny dust removal defogging chamber, a desulfurization and denitrification chamber and a tail gas discharge chamber, wherein the side surface of the upper end of the coke oven is welded with a superheater, the top of the coke oven is integrally provided with an internal heating flue, the right end of the coke oven is provided with the electrostatic tiny dust removal defogging chamber, and the left bottom end of the electrostatic tiny dust removal defogging chamber is provided with the heating flue, is used for a heating working section in the production process of the coke oven, can reduce the energy consumption of the coke oven process, can eliminate the moisture content in the flue gas, eliminates the generation of haze from the source, further improves the purification degree of the flue gas, can carry out the circulation to the flue gas and handle, ensure that the flue gas is discharged into the atmosphere under handling to qualified state, effectively reduce the pollution of flue gas to the air.
Description
Technical Field
The utility model relates to an industrial pollution handles technical field, specifically is a flue gas purification device.
Background
The coke oven flue gas mainly uses the waste gas generated after the coke oven heats the coal gas to burn, the waste gas discharged when the coke oven operates contains heat and is directly discharged to the atmosphere through a chimney, which causes energy waste, the prior coke oven flue gas purification device can not meet the emission limit value requirement of new environmental protection standard on the purification of coke oven flue gas pollutants, the treated flue gas is discharged to the water vapor, fog drops and dust particles contained in the atmosphere, a large amount of gaseous pollutants are dissolved in the fog drops and are discharged to the atmosphere, enrichment is formed under the condition of weather conditions, haze is finally formed, in addition, the treated flue gas is discharged into the atmosphere without detection, the treated flue gas is discharged into the atmosphere without being treated to be qualified, so that air pollution is caused;
because the above problems cause the inconvenience of using the flue gas purification device, further research needs to be carried out on the existing flue gas purification device, and a new flue gas recovery and purification device for coke production is provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it contains the heat in the waste gas of emission when solving coke oven operation, directly discharge to the atmosphere through the chimney, the energy waste has been caused, current coke oven gas cleaning device flue gas treatment effect is poor, tail gas after the processing is not just discharged into the atmosphere under handling qualified state, cause the problem of the pollution of air, a flue gas recovery purifier is used in coke production, can retrieve the waste heat in the flue gas, and be used for the heating workshop section in the coke oven production process, can reduce the energy resource consumption of coke oven technology, and can eliminate the moisture content in the flue gas, eliminate the production of haze from the source, the purification degree of flue gas has further been improved, can carry out circulation treatment to the flue gas, the guarantee flue gas is discharged into the atmosphere under handling qualified state, effectively reduce the pollution of flue gas to the air.
In order to achieve the above object, the utility model provides a following technical scheme: a flue gas recovery and purification device for coke production comprises a coke oven, an electrostatic fine dust removal and defogging chamber, a desulfurization and denitrification chamber and a tail gas discharge chamber, wherein a superheater is welded on the side surface of the upper end of the coke oven, an internal heating flue is integrally arranged at the top of the coke oven, the electrostatic fine dust removal and defogging chamber is arranged at the right end of the coke oven, a heat guiding flue is arranged at the bottom end of the left side of the electrostatic fine dust removal and defogging chamber, the other end of the heat guiding flue is communicated with the lower end of the coke oven, a first smoke guide pipe is arranged at the upper end of the right side of the electrostatic fine dust removal and defogging chamber, the desulfurization and denitrification chamber is arranged at the right end of the electrostatic fine dust removal and defogging chamber, the desulfurization and denitrification chamber is communicated with the desulfurization and denitrification chamber, a second smoke guide pipe is arranged at the upper end of the right side of the desulfurization and denitrification chamber, the tail gas discharge chamber is arranged at the right, the flue gas detector is fixedly connected with the middle part of the left side of the inside of the tail gas discharge chamber through a bolt, a discharge port is integrally formed in the top of the tail gas discharge chamber, the upper end of the right side of the inside of the tail gas discharge chamber is fixedly connected with a fan through a bolt, and the other end of the fan is fixedly connected with a return pipe.
Preferably, an electrostatic demister is integrally arranged in the electrostatic fine dust removal and defogging chamber.
Preferably, the smoke detector and the fan are electrically connected with an external power supply through electric wires, and the smoke detector is electrically connected with the fan through electric wires.
Preferably, the inner heat-guiding flue is positioned at the upper end of the coke oven, and the two sides of the inner heat-guiding flue are both provided with superheaters.
Preferably, the superheater is a platen superheater, and the superheater is arranged in a stepped manner upwards.
Preferably, the inner heat-leading flue and the heat-leading flue are internally provided with heat exchange tubes.
Preferably, the other end of the return pipe extends to the upper end of the electrostatic fine dust and mist removing chamber, and extends to the inside to be communicated with the fine dust and mist removing chamber.
Compared with the prior art, the beneficial effects of the utility model are as follows:
(1) the flue gas generated by the coke oven rises upwards and passes through the screen superheater, the screen superheater can absorb part of convection heat to heat saturated flue gas into superheated flue gas, the screen superheater is upwards arranged in a stepped mode to enable the upwards-distributed flue gas to gradually gather upwards for heating, the temperature of the flue gas can be effectively heated, the flue gas can directly enter a heat-conducting flue, the temperature change of the flue gas is kept not influenced by distance, heat dissipation is reduced, the flue gas enters an electrostatic fine dust removal demisting chamber from the heat-conducting flue for treatment, part of the treated flue gas is introduced into the coke oven through the heat-conducting flue, heat loss is almost avoided, the temperature of the flue gas is effectively guaranteed, waste heat in the flue gas is recovered, and the flue gas is used for a heating section in the coke oven production process, energy consumption of the coke oven process can be reduced, and CO2 and CO can be obviously reduced, SO2, NOx emissions.
(2) Secondly, an electrostatic demister is integrally arranged in the electrostatic fine dust removing and demisting chamber, the flue gas enters the electrostatic fine dust removing and demisting chamber for treatment, the flue gas is treated by the electrostatic demister, harmful substances such as fine dust, fog drops, aerosol, PM2.5, heavy metals and the like in the flue gas are basically and effectively adsorbed, the moisture content in the flue gas is eliminated, and the micro liquid drops of water formed by SOx (sulfur oxide), NOx (nitrogen oxide), VOCx and other substances in the flue gas are avoided, the flue gas treated in the way is discharged into the atmosphere by the tail gas discharge chamber, thereby solving the problem that dust haze is formed by tiny liquid drops and tiny particles in the flue gas, eliminating the generation of the dust haze from the source, further improving the purification degree of the flue gas, therefore, the effects of carrying out advanced treatment and purification on the flue gas are achieved, the flue gas is subjected to advanced treatment, and the treated flue gas pollutants reach ultra-low concentration and are discharged.
(3) Finally, the smoke detector and the fan are electrically connected with an external power supply through electric wires, the smoke detector is electrically connected with the fan through electric wires, the treated smoke is detected by the smoke detector in the tail gas discharge chamber when entering the tail gas discharge chamber through the smoke detector arranged in the tail gas discharge chamber, whether the treated smoke reaches the qualified discharge standard is detected, the tail gas reaching the standard is discharged through a discharge port when the smoke discharge standard is detected to be qualified, if the treated tail gas does not reach the standard, the fan is opened through signal connection to suck the smoke which does not reach the standard into a return pipe, the smoke which does not reach the standard is guided into the electrostatic fine dust removal demisting chamber from the return pipe, and then the smoke is treated again through the electrostatic fine dust removal demisting chamber and the desulfurization and denitrification chamber, thereby ensuring that the smoke is discharged into the atmosphere when being treated to be qualified, effectively reduce the pollution of the smoke to the air.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the internal structure of the heat-conducting flue of the present invention.
In the figure: 1-a coke oven; 2-a superheater; 3-internal heat-conducting flue; 4-electrostatic fine dust and fog removing chamber; 5-heat-leading flue; 6-a first smoke guide pipe; 7-a desulfurization and denitrification chamber; 8-a second smoke guide pipe; 9-a tail gas discharge chamber; 10-a smoke detector; 11-a discharge port; 12-a fan; 13-return line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Example (b):
as shown in FIGS. 1-2;
the embodiment provides a flue gas recovery and purification device for coke production, which comprises a coke oven 1, an electrostatic fine dust removal and defogging chamber 4, a desulfurization and denitrification chamber 7 and a tail gas discharge chamber 9, wherein a superheater 2 is welded on the side surface of the upper end of the coke oven 1, an internal heating flue 3 is integrally arranged at the top of the coke oven 1, the electrostatic fine dust removal and defogging chamber 4 is arranged at the right end of the coke oven 1, a heat guiding flue 5 is arranged at the bottom end of the left side of the electrostatic fine dust removal and defogging chamber 4, the other end of the heat guiding flue 5 is communicated with the lower end of the coke oven 1, a first smoke guiding pipe 6 is arranged at the upper end of the right side of the electrostatic fine dust removal and defogging chamber 4, the desulfurization and denitrification chamber 7 is arranged at the right end of the electrostatic fine dust removal and defogging chamber 4, the other end of the first smoke guiding pipe 6 is communicated with the desulfurization and denitrification chamber 7, a second smoke guiding pipe, the other end of the second smoke guide pipe 8 is communicated with a tail gas removal discharge chamber 9, the middle part of the left side of the interior of the tail gas discharge chamber 9 is fixedly connected with a smoke detector 10 through a bolt, the top of the tail gas discharge chamber 9 is integrally provided with a discharge port 11, the upper end of the right side of the interior of the tail gas discharge chamber 9 is fixedly connected with a fan 12 through a bolt, and the other end of the fan 12 is fixedly connected with a return pipe 13.
Furthermore, an electrostatic demister is integrally arranged in the electrostatic fine dust removing and demisting chamber 4, the flue gas enters the electrostatic fine dust removing and demisting chamber for treatment, the flue gas is treated by the electrostatic demister, harmful substances such as fine dust, fog drops, aerosol, PM2.5, heavy metals and the like in the flue gas are basically and effectively adsorbed, the moisture content in the flue gas is eliminated, and the micro liquid drops of water formed by SOx (sulfur oxide), NOx (nitrogen oxide), VOCx and other substances in the flue gas are avoided, the flue gas treated in the way is discharged into the atmosphere through the tail gas discharge chamber 9, thereby solving the problem that dust haze is formed by tiny liquid drops and tiny particles in the flue gas, eliminating the generation of the dust haze from the source, further improving the purification degree of the flue gas, therefore, the effects of carrying out advanced treatment and purification on the flue gas are achieved, the flue gas is subjected to advanced treatment, and the treated flue gas pollutants reach ultra-low concentration and are discharged.
Further, the flue gas detector 10 and the fan 12 are electrically connected with an external power supply through electric wires, the flue gas detector 10 is electrically connected with the fan 12 through electric wires, when the treated flue gas enters the tail gas discharge chamber 9, the treated flue gas is detected by the flue gas detector 10 in the tail gas discharge chamber 9, whether the treated flue gas meets the qualified discharge standard is detected, when the flue gas discharge standard is detected to be qualified, the tail gas reaching the standard is discharged through the discharge port 11, if the treated tail gas does not meet the standard is detected, the fan 12 is opened through signal connection to suck the flue gas failing to reach the standard into the return pipe 13, the flue gas failing to reach the standard is guided into the electrostatic fine dust removal defogging chamber 4 from the return pipe 13 and is treated again through the electrostatic fine dust removal defogging chamber 4 and the desulfurization and denitrification chamber 7, and the flue gas is discharged into the atmosphere under the qualified state, effectively reduce the pollution of the smoke to the air.
Furthermore, the inner heat-conducting flue 3 is positioned at the upper end of the coke oven 1, and the overheaters 2 are arranged on two sides of the inner heat-conducting flue 3, so that the smoke generated by the coke oven 1 can directly enter the inner heat-conducting flue 3 by rising upwards, the temperature change of the smoke is not influenced by distance, and the heat emission is reduced.
Further, over heater 2 is platen superheater 2, and over heater 2 is cascaded upwards and sets up, and platen superheater 2 comprises the multi-disc tube panel, and platen superheater 2 can absorb partly convection heat, heats into superheated flue gas with saturated flue gas, through being cascaded upwards setting with platen superheater 2 for the flue gas that upwards gives off can upwards gather together the heating gradually, effectively heats the temperature of flue gas.
Furthermore, the inner heat-leading flue 3 and the inner heat-leading flue 5 are both provided with heat exchange tubes, the heat exchange tubes are used for exchanging heat between the inner heat-leading flue 3 and the electrostatic fine dust removal fog chamber 4 as well as the heat-leading flue 5, the heat exchange tubes have high heat conductivity and good isothermal property, the heat exchange tubes can quickly transfer heat energy from the inner heat-leading flue 3 into the electrostatic fine dust removal fog chamber 4, and the flue gas treated in the electrostatic fine dust removal fog chamber 4 is guided into the coke oven 1 through the heat-leading flue 5, almost no heat loss exists, and the temperature of the flue gas is effectively guaranteed.
Further, the other end of the return pipe 13 extends to the upper end of the electrostatic fine dust removing and defogging chamber 4, and extends to the inside to be communicated with the fine dust removing and defogging chamber 4.
The working principle is as follows:
when the flue gas recovery and purification device for coke production provided by the utility model is used, the coke oven 1 heats the coal gas to burn and then generates flue gas, the flue gas generated by the coke oven 1 rises upwards and passes through the screen superheater 2, the screen superheater 2 can absorb part of convection heat to heat saturated flue gas into superheated flue gas, the screen superheater 2 is arranged upwards in a step manner, the flue gas which is emitted upwards can gradually gather upwards to heat, the temperature of the flue gas is effectively heated, the flue gas can directly enter the inner heat-removal flue 3, the temperature change of the flue gas is kept not influenced by distance, the heat emission is reduced, the flue gas enters the electrostatic fine dust removal fog removal chamber 4 from the inner heat-removal flue 3, the electrostatic demister is integrally arranged in the electrostatic fine dust removal fog removal chamber 4, the flue gas enters the electrostatic fine dust removal chamber to be treated, the flue gas is treated by the electrostatic demister, the moisture content in the flue gas can be eliminated, the method avoids the formation of water micro droplets by SOx (sulfur oxide), NOx (nitrogen oxide), VOCx and other substances in the flue gas, leads part of the treated flue gas into the coke oven 1 through the heat-conducting flue 5, almost has no heat loss, effectively ensures the temperature of the flue gas, recovers the waste heat in the flue gas, is used for a heating section in the production process of the coke oven, not only can reduce the energy consumption of the coke oven process, but also can obviously reduce the discharge amount of CO2, SO2 and NOX, leads the treated flue gas into the desulfurization and denitrification chamber 7 through the first smoke guide pipe 6, carries out desulfurization and denitrification treatment on the flue gas, leads the treated flue gas into the tail gas discharge chamber 9 from the second smoke guide pipe 8, and when the treated flue gas enters the tail gas discharge chamber 9, detects the treated flue gas through the flue gas detector 10 in the tail gas discharge chamber 9, whether the treated flue gas reaches the qualified emission standard or not is detected, when the flue gas emission standard is detected to be qualified, the tail gas reaching the standard is detected to be discharged through the discharge port 11, if the treated tail gas does not reach the standard, the fan 12 is opened through signal connection to suck the flue gas not reaching the standard into the return pipe 13, the flue gas not reaching the standard is guided into the electrostatic fine dust removal and defogging chamber 4 from the return pipe 13 and is treated again through the electrostatic fine dust removal and defogging chamber 4 and the desulfurization and denitrification chamber 7, the flue gas is ensured to be discharged into the atmosphere when being treated to be qualified, and the pollution of the flue gas to the air is effectively reduced.
The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (7)
1. A flue gas recovery and purification device for coke production comprises a coke oven (1), an electrostatic fine dust removal and defogging chamber (4), a desulfurization and denitrification chamber (7) and a tail gas discharge chamber (9), and is characterized in that a superheater (2) is welded on the side surface of the upper end of the coke oven (1), an internal heating flue (3) is integrally arranged at the top of the coke oven (1), the electrostatic fine dust removal and defogging chamber (4) is arranged at the right end of the coke oven (1), a heat guiding flue (5) is arranged at the bottom end of the left side of the electrostatic fine dust removal and defogging chamber (4), the other end of the heat guiding flue (5) is communicated with the lower end of the coke oven (1), a first smoke guiding pipe (6) is arranged at the upper end of the right side of the electrostatic fine dust removal and defogging chamber (4), the desulfurization and denitrification chamber (7) is arranged at the right end of the electrostatic fine dust removal and defogging chamber (4), and the other end of the first smoke guiding pipe (6) is communicated, the utility model discloses a flue gas desulfurization and denitration device, including SOx/NOx control room (7), the right side upper end of SOx/NOx control room (7) is provided with second and leads tobacco pipe (8), the right-hand member of SOx/NOx control room (7) is provided with exhaust emission room (9), the other end of second leads tobacco pipe (8) and takes off exhaust emission room (9) and be linked together, bolt fixedly connected with flue gas detector (10) are passed through at the inside left side middle part of exhaust emission room (9), the top integration of exhaust emission room (9) is provided with discharge port (11), bolt fixedly connected with fan (12) are passed through to the inside right side upper end of exhaust emission room (9), fan (12) other end fixedly.
2. The coke production flue gas recovery and purification device according to claim 1, wherein an electrostatic demister is integrally arranged inside the electrostatic fine dust removal and defogging chamber (4).
3. The coke production flue gas recovery and purification device according to claim 1, wherein the flue gas detector (10) and the fan (12) are electrically connected to an external power source through wires, and the flue gas detector (10) is electrically connected to the fan (12) through wires.
4. The flue gas recovery and purification device for coke production as defined in claim 1, wherein the inner heat-conducting flue (3) is located at the upper end of the coke oven (1), and the superheaters (2) are arranged on both sides of the inner heat-conducting flue (3).
5. The flue gas recovery and purification device for coke production according to claim 1, wherein the superheater (2) is a platen superheater (2), and the superheater (2) is arranged in a stepped manner upward.
6. The flue gas recovery and purification device for coke production as defined in claim 1, wherein the inner heat-leading flue (3) and the inner heat-leading flue (5) are provided with heat exchange tubes.
7. The coke production flue gas recovery and purification device according to claim 1, wherein the other end of the return pipe (13) extends to the upper end of the electrostatic fine dust removing and defogging chamber (4) and extends to the inside to be communicated with the fine dust removing and defogging chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354329.6U CN210021686U (en) | 2019-03-20 | 2019-03-20 | Flue gas recovery and purification device for coke production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920354329.6U CN210021686U (en) | 2019-03-20 | 2019-03-20 | Flue gas recovery and purification device for coke production |
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| CN210021686U true CN210021686U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121607A (en) * | 2020-09-15 | 2020-12-25 | 南京将犀网络科技有限公司 | Use environmental protection type industrial waste gas treatment auxiliary device of thing networking engineering |
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2019
- 2019-03-20 CN CN201920354329.6U patent/CN210021686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121607A (en) * | 2020-09-15 | 2020-12-25 | 南京将犀网络科技有限公司 | Use environmental protection type industrial waste gas treatment auxiliary device of thing networking engineering |
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