CN206803782U - A kind of dedusting of coke oven underground flue gas and residual neat recovering system - Google Patents
A kind of dedusting of coke oven underground flue gas and residual neat recovering system Download PDFInfo
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- CN206803782U CN206803782U CN201720611482.3U CN201720611482U CN206803782U CN 206803782 U CN206803782 U CN 206803782U CN 201720611482 U CN201720611482 U CN 201720611482U CN 206803782 U CN206803782 U CN 206803782U
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- shower
- coke oven
- flue gas
- dedusting
- heat exchanger
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The utility model discloses a kind of dedusting of coke oven underground flue gas and residual neat recovering system, including coke oven, chimney and the underground flue being arranged between coke oven and chimney, smoke collecting pipe is provided with the underground flue close to coke oven end, stop valve is provided with the underground flue close to chimney end, the end of smoke collecting pipe is connected with one-level heat exchanger, the endothermic tube outlet of one-level heat exchanger is connected with two-stage heat exchanger, dust separation tower is connected with the cold-air vent pipe of two-stage heat exchanger, the one-level escape pipe of dust separation tower connects with chimney.The system not only realizes sufficiently to be recycled to the waste heat of underground flue gas, its heat energy volume utilization rate is higher, and pass through wet desulphurization and electrostatic precipitation, farthest reduce environmental pollution, its desulfurization, the significant effect of dedusting, good economic benefit and social benefit, use easy to spread can be produced.
Description
Technical field
The utility model belongs to coking equipment technical field, and in particular to a kind of dedusting of coke oven underground flue gas and waste heat
Recovery system.
Background technology
For flue gases of cock oven based on caused tail gas after coke oven heating gas-fired, thermal efficiency when coke oven is run is general not
Higher than 70%, but the tail gas discharged accounts for more than the 23% of coke oven total energy consumption, and energy-saving potential is very considerable.The flue tolerance of coke oven
Different according to the type of furnace, hole count and combustion medium of coke oven, also otherwise varied, usual exhaust gas volumn is in 10 ten thousand to three ten ten thousand Nm3/ h is left
The right side, temperature is between 250 DEG C~300 DEG C, it is well known that flue gas is derived from the underground flue before coke oven chimney, its flue
It can be produced in gas containing harmful substances such as flue dust, sulfur dioxide and carbon dioxide, these flue gases are directly arranged by chimney
To put into air, can so directly affect factory's ambient air quality, some factories can do purified treatment to its flue gas, but very
It is more really pernicious gas to be converted, and its exhaust gas temperature, between 250 DEG C~300 DEG C, this high-temperature flue gas is arranged
Put and not only cause a large amount of thermal wastes, while also result in the atmosphere pollution using flue dust and sulfur dioxide as representative.Although existing
Coking system in, be provided with residual neat recovering system on the underground flue typically all between chimney and coke oven, but existing remaining
Heat recovery system has that waste heat recovery rate is relatively low, water resource waste serious phenomenon, meanwhile, the effect of desulfurization and dedusting is poor, outside
The flue gas of row still has certain pollution to environment.Therefore, development one kind is rational in infrastructure, can at utmost reclaim flue
Waste heat, the saving energy and water source in gas, while desulfurization and dust removing effects can be strengthened, the coke oven underground flue to reduce environmental pollution
The dedusting of gas and residual neat recovering system are desirabilities.
The content of the invention
The purpose of this utility model in provide it is a kind of it is rational in infrastructure, can at utmost reclaim waste heat in flue gas,
Save the energy and water source, while desulfurization and dust removing effects can be strengthened, the dedusting of the coke oven underground flue gas to reduce environmental pollution and
Residual neat recovering system.
The purpose of this utility model is achieved in that including coke oven, chimney and the ground being arranged between coke oven and chimney
Lower flue, smoke collecting pipe is provided with the underground flue close to coke oven end, is set on the underground flue close to chimney end
There is stop valve, the end of smoke collecting pipe is connected with one-level heat exchanger, and the endothermic tube outlet of one-level heat exchanger is connected with two
Level heat exchanger, is connected with dust separation tower, the one-level outlet of dust separation tower on the cold-air vent pipe of two-stage heat exchanger
Pipe connects with chimney, and one-level heat exchanger is connected with one-level residual neat recovering system, and one-level residual neat recovering system includes adopting with flue gas
The off-gas recovery device of header in communication and around the endothermic tube being located on off-gas recovery device；Two-stage heat exchanger is connected with two level waste heat and returned
Receipts system, two level residual neat recovering system include the water inlet pipe and outlet pipe through the two-stage heat exchanger；
At least one electrode dedusting chamber and shower humidification chamber, electrode dedusting chamber and spray are provided with dust separation tower from top to bottom
It is separated by between leaching humidification chamber by packing layer, electrode dedusting intracavitary is provided with electrostatic precipitator and the first shower, the first spray
Shower pipe is arranged on the top of electrostatic precipitator, and the first shower is connected with water purifying tank, and water pump is provided with the first shower,
Shower humidification intracavitary is provided with the second shower, and cold-air vent pipe is located at the downside of shower humidification chamber, and the second shower is located at
The top of cold-air vent pipe, processing liquid pool is provided with below shower humidification chamber, the discharge outlet in shower humidification bottom of chamber portion stretches into
Into processing liquid pool, being connected with processing liquid pool for the second shower, circulating pump is installed on the second shower.
The beneficial effects of the utility model are：
1st, the utility model is by the one-level heat exchanger and two-stage heat exchanger of setting, can be effectively in recovered flue gas
Waste heat, a part of waste heat by with external jacket ammoniacal liquor carry out heat exchange after, after ammoniacal liquor is heated into superheat state
Deliver in flash tank, so as to realize the purpose of flash distillation ammonia, another part waste heat enters two level heat exchange after being absorbed heat by endothermic tube
Aqueous vapor heat exchange is carried out in device, the hot water after heat absorption drains into the use water spot of needs by outlet pipe, and the cold air after heat exchange enters
Enter dust separation tower dust-removal and desulfurizing, it is not only remaining by the recovery of one-level heat exchanger and two-stage heat exchanger to flue gas waste heat
The utilization rate of recuperation of heat is high, and its rate of recovery can reach more than 90%, and save the energy.
2nd, the utility model carries out dust-removal and desulfurizing by the way of wet desulphurization, is concentrated on through desulfurization and electrostatic precipitation in tower
Integrated treatment, its mechanism is ingenious, and takes small volume, into the low-temperature flue gas spray that passes through the first shower of shower humidification chamber
Leaching, the material soluble in water such as sulfur-bearing in flue gas, carbon containing can be removed, while low-temperature flue gas can be humidified, and it is low
During warm flue gas constantly rises, when flue gas passes through electrostatic precipitator, according to the effect of electrostatic by the major part in flue gas
Adsorbing powder dust, so as to reach the purpose of dust-removal and desulfurizing, the pure air after dedusting is directly arranged by one-level escape pipe into chimney
Put, electrostatic precipitator is arranged on the top for carrying out desulfurization by dust separation tower, can be to air while to flue gas desulfurization
Humidified, improve electrostatic precipitation efficiency, can effectively remove below 0.01um fine solid particle, make discharge air cleaner
Only.
In summary：The system not only realizes sufficiently to be recycled to the waste heat of underground flue gas, its heat energy
Volume utilization rate is higher, and by wet desulphurization and electrostatic precipitation, farthest reduces environmental pollution, its desulfurization, dedusting
Significant effect, good economic benefit and social benefit, use easy to spread can be produced.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the schematic top plan view of homogenating plate；
In figure:1- coke ovens, 2- flash tanks, 3- external jackets, 4- one-level heat exchangers, 5- ammoniacal liquor inlet tubes, 6- endothermic tubes, 7-
Outlet pipe, 8- two-stage heat exchangers, 9- cold-air vent pipes, 10- dust separation towers, 11- shower humidification chambers, 12- negative electrodes
Plate, 13- electrode dedusting chambers, 14- water purifying tanks, 15- water pumps, the showers of 16- first, 17- current equalizers, 18- one-level escape pipes,
19- chimneys, 20- two level escape pipes, 21- electrostatic precipitation towers, the showers of 22- second, 23- homogenating plates, 231- substrates, 232- master go out
Stomata, 233- auxiliary ventholes, 24- circulating pumps, 25- stop valves, 26- processing liquid pools, 27- discharge outlet, 28- water inlet pipes, 29-
Smoke collecting pipe, 30- air-introduced machines, 31- underground flues, 32- packing layers, 33- anode electrode plates.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, but the utility model is not subject in any way
Limitation, any changes and modifications made based on the utility model training centre, belongs to the scope of protection of the utility model.
As shown in Fig. 1~2, the utility model includes coke oven 1, chimney 19 and the ground being arranged between coke oven 1 and chimney 19
Lower flue 31, it is characterised in that smoke collecting pipe 29 is provided with the underground flue 31 close to the end of coke oven 1, close to chimney
Stop valve 25 is provided with the underground flue 31 at 19 ends, the end of the smoke collecting pipe 29 is connected with one-level heat exchanger 4,
The outlet of endothermic tube 6 of the one-level heat exchanger 4 is connected with two-stage heat exchanger 8, and the cold air of the two-stage heat exchanger 8 goes out
Dust separation tower 10 is connected with mouth pipe 9, the one-level escape pipe 18 of the dust separation tower 10 connects with chimney 19, the one-level
Heat exchanger 4 is connected with one-level residual neat recovering system, and the one-level residual neat recovering system includes what is connected with smoke collecting pipe 29
Off-gas recovery device and around the endothermic tube 6 being located on off-gas recovery device, is provided with external jacket 3 outside the off-gas recovery device, described outer
Gap is left between chuck 3 and off-gas recovery device, ammoniacal liquor inlet tube 5 and ammoniacal liquor water outlet pipe, institute are provided with the external jacket 3
State ammoniacal liquor outlet and be connected with flash tank 2；The two-stage heat exchanger 8 is connected with two level residual neat recovering system, more than the two level
Heat recovery system includes the water inlet pipe 28 and outlet pipe 7 through the two-stage heat exchanger 8；Perforate is set on underground flue 31
Put smoke collecting pipe 29 and stop valve 25 is set on underground flue 31 so that the high-temperature flue gas in the gas of underground flue 31 is directly logical
Cross smoke collecting pipe 29 and enter the progress heat exchange of one-level heat exchanger 4, flue gas is stored in into the flue gas in one-level exchanger 4
In recover, most of high-temperature flue gas in off-gas recovery device from from ammoniacal liquor inlet tube 5 with entering off-gas recovery device and outer clip
After the deposed ammonia in gap between set 3 carries out heat exchange, the circulation deposed ammonia after heating delivers to sudden strain of a muscle by ammoniacal liquor outlet
Steaming pot 2 flashes off ammonia vapour, realizes ammonia still process, and after least a portion of high-temperature flue gas carries out heat exchange with the cold air in endothermic tube 6,
Cold air after heating in endothermic tube 6 enters in two-stage heat exchanger 8, into the hot-air in two-stage heat exchanger 8 with from entering
After the cold water that water pipe 28 enters carries out heat exchange, the hot water after heat exchange is discharged from outlet pipe 7, and that delivers to needs uses heat
The occasion of water, and then cold-air vent pipe 9 enters in dust separation tower 10 low-temperature flue gas after exchanging heat, and passes through one-level heat exchanger
4 and recovery of the two-stage heat exchanger 8 to flue gas waste heat, the utilization rate of not only waste heat recovery is high, its rate of recovery can reach 90% with
On, and saved the energy.
At least one electrode dedusting chamber 13 and shower humidification chamber 11 are provided with the dust separation tower 10 from top to bottom, it is described
It is separated by between electrode dedusting chamber 13 and shower humidification chamber 11 by packing layer 32, being provided with electrostatic in the electrode dedusting chamber 13 removes
Dirt device and the first shower 16, first shower 16 are arranged on the top of electrostatic precipitator, first shower
16 are connected with water purifying tank 14, and water pump 15 is provided with first shower 16, and is provided with the shower humidification chamber 11
Two showers 22, the cold-air vent pipe 9 are located at the downside of shower humidification chamber 11, and second shower 22 is located at cold air
The top of outlet 9, the lower section of the shower humidification chamber 11 are provided with processing liquid pool 26, the row of the bottom of shower humidification chamber 11
The mouth of a river 27 is extend into processing liquid pool 26, and second shower 22 is connected with processing liquid pool 26, second shower 22
On circulating pump 24 is installed.
The processing liquid pool 26 of the bottom of dust separation tower 10 is used to collect the treatment fluid flowed down from discharge outlet 27, discharge outlet
27 can be placed in processing liquid pool 26 below liquid level, can so avoid smoke overflow, the second shower 22 passes through circulating pump 24
It is connected with processing liquid pool 26, recycles the treatment fluid in processing liquid pool 26 to the low-temperature flue gas that enters from cold-air vent pipe 9
Carry out spray wet processing, the effective sulfide removed in flue gas and active nitrogen oxides.Second shower 22
Including setting the inside spin coil pipe of shower humidification chamber 11, some spray heads are set on the spiral coil, flue gas and place can be made
Reason liquid spraying is effectively contacted, and removes the sulfide and nitrogen oxides in flue gas, the air-flow after desulfurization to greatest extent
Entered during rising by packing layer 32 in electrode dedusting chamber 13, ionize flue gas using high voltage electric field, gas
Dust charged in stream separates under electric field action with air-flow, can trap below 1um fine solid particle, on electrostatic precipitation chamber 13
Portion, the first shower 16 is provided with above electrostatic precipitator, the first shower 16 is connected with water purifying tank 14, and passes through water intaking
Pump 15 extract water purifying tank 14 in clear water be atomized, make in high voltage electric field is carried out flue gas raising electric conductivity, more added with
Separated beneficial to dust with air-flow, can effectively remove below 0.01um fine solid particle, the pure air after dust-removal and desulfurizing passes through
One-level escape pipe 18 enters chimney 19, is drained into from chimney 19 in air, desulfurization and electrostatic precipitation concentrate on dust separation tower 10
Interior integrated treatment, mechanism is ingenious, and takes small volume, and electrostatic precipitator is arranged on the top for carrying out desulfurizer, right
Air can be humidified while flue gas desulfurization, improve electrostatic precipitation efficiency, can effectively remove below 0.01um's
Fine solid particle, make discharge air cleaner.
In order to thoroughly remove the dust in low-temperature flue gas, it is provided between the one-level escape pipe 18 and chimney 19
Electrostatic precipitation tower 21, electrostatic precipitator, the two level outlet of the electrostatic precipitation tower 21 are provided with the electrostatic precipitation tower 21
Pipe 20 is connected with chimney 19,
Preferably, the electrostatic precipitator includes the anode electrode plate 33 being connected with positive source and connected with power cathode
The negative el 12 connect, the burr that length is 5~10mm, and the negative el 12 are set on the negative el 12
With the 33 spaced setting of anode electrode plate.It is the irregular of 5~10mm that some length are provided with the negative el 12
Burr, for improving negative el 12 and air contact area, the anode electrode plate 33 can be cylindric, the negative pole
Battery lead plate 12 is placed in the home position of cylindric anode electrode plate 33.In addition, the spacing between the adjacent collecting electrode plate
For 400-700mm.During dedusting, make low-temperature flue gas using negative el 12 and high voltage electric field caused by anode electrode plate 33
Ionize, the dust charged in air-flow separates under electric field action with air-flow, can trap below 1um fine solid particle.
Further, the top of the electrode dedusting chamber 13 is provided with current equalizer 17, if the current equalizer 17 includes
Dry block corrugated plating, forms the gas channel of complications between adjacent two corrugated plating, the air-flow of electrostatic precipitation by air-flow air flue, through with
Corrugated plating wooden partition contact in air-flow air flue, the steam in air-flow is removed, and can further dedusting.
Further, it is provided with the shower humidification chamber 11 between the shower 22 of cold-air vent pipe 9 and second
Aerofoil 23, for low-temperature flue gas air-flow just to be disperseed, it is set uniformly to be distributed in the cavity of shower humidification chamber 11 at receiving
Liquid spray is managed, desulfurized effect is more obvious.The homogenating plate 23 includes the substrate being fixedly mounted on the inwall of shower humidification chamber 11
231, be provided with several equal air holes on the substrate 231, the air holes include main venthole 232 and be uniformly arranged on it is main go out
4 auxiliary ventholes 233 around stomata 232, can so facilitate low-temperature flue gas to pass through, and will not cause dirty treatment fluid
Equal air holes is blocked.
Further, air-introduced machine 30 is installed on the smoke collecting pipe 29, be to be able in underground flue 31
High-temperature flue gas is timely drawn in smoke collecting pipe 29.
Claims (6)
1. dedusting and the residual neat recovering system of a kind of coke oven underground flue gas, including coke oven（1）, chimney（19）Be arranged on coke oven
（1）With chimney（19）Between underground flue（31）, it is characterised in that close to coke oven（1）The underground flue at end（31）On set
It is equipped with smoke collecting pipe（29）, close to chimney（19）The underground flue at end（31）On be provided with stop valve（25）, the flue gas
Collection tube（29）End be connected with one-level heat exchanger（4）, the one-level heat exchanger（4）Endothermic tube（6）Outlet connection
There is two-stage heat exchanger（8）, the two-stage heat exchanger（8）Cold-air vent pipe（9）On be connected with dust separation tower（10）,
The dust separation tower（10）One-level escape pipe（18）With chimney（19）Connection, the one-level heat exchanger（4）It is connected with one
Level residual neat recovering system, the one-level residual neat recovering system include and smoke collecting pipe（29）The off-gas recovery device of connection and winding
Endothermic tube on off-gas recovery device（6）, external jacket is provided with outside the off-gas recovery device（3）, the external jacket（3）With flue gas
Gap, the external jacket are left between recover（3）On be provided with ammoniacal liquor inlet tube（5）With ammoniacal liquor water outlet pipe, the ammoniacal liquor
Outlet is connected with flash tank（2）；The two-stage heat exchanger（8）It is connected with two level residual neat recovering system, the two level waste heat
Recovery system is included through the two-stage heat exchanger（8）Water inlet pipe（28）And outlet pipe（7）；The dust separation tower（10）
At least one electrode dedusting chamber is inside provided with from top to bottom（13）With shower humidification chamber（11）, the electrode dedusting chamber（13）And spray
Humidification chamber（11）Between pass through packing layer（32）It is separated by, the electrode dedusting chamber（13）Inside it is provided with electrostatic precipitator and first
Shower（16）, first shower（16）It is arranged on the top of electrostatic precipitator, first shower（16）With it is net
Pond（14）It is connected, first shower（16）On water pump is installed（15）, the shower humidification chamber（11）Inside it is provided with
Second shower（22）, the cold-air vent pipe（9）Positioned at shower humidification chamber（11）Downside, second shower（22）
Positioned at cold-air vent pipe（9）Top, the shower humidification chamber（11）Lower section be provided with processing liquid pool（26）, the spray
Humidification chamber（11）The discharge outlet of bottom（27）It extend into processing liquid pool（26）It is interior, second shower（22）With handle liquid pool
（26）It is connected, second shower（22）On circulating pump is installed（24）.
2. dedusting and the residual neat recovering system of a kind of coke oven underground flue gas according to claim 1, it is characterised in that：Institute
State one-level escape pipe（18）With chimney（19）Between be provided with electrostatic precipitation tower（21）, the electrostatic precipitation tower（21）Inside it is provided with
Electrostatic precipitator, the electrostatic precipitation tower（21）Two level escape pipe（20）With chimney（19）It is connected.
3. a kind of dedusting of coke oven underground flue gas according to claim 1 or 2 and residual neat recovering system, its feature exist
In：The electrostatic precipitator includes the anode electrode plate being connected with positive source（33）The negative electricity being connected with power cathode
Pole plate（12）, the negative el（12）It is upper that the burr that length is 5~10mm, and the negative el are set（12）With just
Pole battery lead plate（33）Spaced setting.
4. dedusting and the residual neat recovering system of a kind of coke oven underground flue gas according to claim 1, it is characterised in that：Institute
State electrode dedusting chamber（13）Top be provided with current equalizer（17）, the current equalizer 17 includes some pieces of corrugated platings, adjacent
The gas channel of complications is formed between two corrugated platings.
5. dedusting and the residual neat recovering system of a kind of coke oven underground flue gas according to claim 1, it is characterised in that：Institute
State cold-air vent pipe（9）With the second shower（22）Between shower humidification chamber（11）Inside it is provided with homogenating plate（23）, it is described
Homogenating plate（23）Including being fixedly mounted on shower humidification chamber（11）Substrate on inwall（231）, the substrate（231）On be provided with
Several equal air holes, the air holes include main venthole（232）Be uniformly arranged on main venthole（232）4 of surrounding are auxiliary
Help venthole（233）.
6. dedusting and the residual neat recovering system of a kind of coke oven underground flue gas according to claim 1, it is characterised in that：Institute
State smoke collecting pipe（29）On air-introduced machine is installed（30）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720611482.3U CN206803782U (en) | 2017-05-28 | 2017-05-28 | A kind of dedusting of coke oven underground flue gas and residual neat recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720611482.3U CN206803782U (en) | 2017-05-28 | 2017-05-28 | A kind of dedusting of coke oven underground flue gas and residual neat recovering system |
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| Publication Number | Publication Date |
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| CN206803782U true CN206803782U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720611482.3U Active CN206803782U (en) | 2017-05-28 | 2017-05-28 | A kind of dedusting of coke oven underground flue gas and residual neat recovering system |
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| CN (1) | CN206803782U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432985A (en) * | 2018-12-20 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of desulphurizing and dust-removing integral cylindric heater |
| CN111439880A (en) * | 2020-04-07 | 2020-07-24 | 嘉兴新嘉爱斯热电有限公司 | Wastewater treatment device with zero discharge |
| CN114508952A (en) * | 2022-04-19 | 2022-05-17 | 天津乐科节能科技有限公司 | Impurity-containing superheated steam waste heat recovery system and method |
-
2017
- 2017-05-28 CN CN201720611482.3U patent/CN206803782U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432985A (en) * | 2018-12-20 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of desulphurizing and dust-removing integral cylindric heater |
| CN111439880A (en) * | 2020-04-07 | 2020-07-24 | 嘉兴新嘉爱斯热电有限公司 | Wastewater treatment device with zero discharge |
| CN114508952A (en) * | 2022-04-19 | 2022-05-17 | 天津乐科节能科技有限公司 | Impurity-containing superheated steam waste heat recovery system and method |
| CN114508952B (en) * | 2022-04-19 | 2022-07-05 | 天津乐科节能科技有限公司 | Impurity-containing superheated steam waste heat recovery system and method |
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