CN209138320U - A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment - Google Patents
A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment Download PDFInfo
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- CN209138320U CN209138320U CN201821816443.8U CN201821816443U CN209138320U CN 209138320 U CN209138320 U CN 209138320U CN 201821816443 U CN201821816443 U CN 201821816443U CN 209138320 U CN209138320 U CN 209138320U
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- quenched
- desulphurization denitration
- cleaning equipment
- fluorine removal
- removal tower
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Abstract
A kind of carbon baking kiln gas ultra-clean disclosed by the utility model discharges cleaning equipment, including be linked in sequence by pipeline quenched evaporating column, electrical tar precipitator, air-introduced machine, ozone denitrification apparatus, desulphurization denitration fluorine removal tower, wet type electrostatic precipitator and take off white device；The quenched evaporating column is connected by the outlet flue of air inlet smoke pipe and roaster；It is described to take off white device and be connected with blowdown stack.The utility model is provided with quenched evaporating column, electrical tar precipitator, ozone denitrification apparatus, desulphurization denitration fluorine removal tower, wet type electrostatic precipitator and takes off white device, the comprehensive treatment for baking flue gas is realized, so that the discharge index of flue gas is better than national standard from far away.
Description
Technical field
The utility model relates to baking flue gas purification techniques fields more particularly to a kind of carbon baking kiln gas ultra-clean to arrange
Put cleaning equipment.
Background technique
The flue gas that carbon element factory's roaster generates, which contains a large amount of sulfide, fluoride, tar, dust, NO, BaP etc., to be had
Evil substance, these substances can all generate serious harm, especially sour gas SO to animals and plants, human body2, NOx and HF have
The corrosivity of height, multiclass carcinogenic substance BaP harm therein is bigger, mostly uses greatly to the processing of carbon baking flue gas at present
Electrically trapped tar oil dedusting technology and sack cleaner are handled, and are unable to reach existing National Environmental Protection Agency for the standard of enterprise
It is required that.
Utility model content
The purpose of this utility model is that it is super clean to provide a kind of carbon baking kiln gas in place of avoiding the deficiencies in the prior art
Net discharge cleaning equipment, to effectively solve the shortcomings of the prior art.
To achieve the above object, a kind of technical solution that the utility model is taken are as follows: carbon baking kiln gas ultra-clean row
Cleaning equipment is put, including the quenched evaporating column, electrical tar precipitator, air-introduced machine, ozone denitrification apparatus, de- being linked in sequence by pipeline
Sulphur denitration fluorine removal tower, wet type electrostatic precipitator and take off white device；
The quenched evaporating column is connected by the outlet flue of air inlet smoke pipe and roaster；
It is described to take off white device and be connected with blowdown stack.
Further, the lower part of the quenched evaporating column is provided with import, and the air inlet smoke pipe 1 is connected to entrance, described
The top of quenched evaporating column is connect with the electrical tar precipitator；
Spray equipment is provided in the middle part of the quenched evaporating column, spray equipment is connected with quenched collecting-tank, described quenched
The bottom of evaporating column is provided with water storage portion, and baffling structure is provided with above water storage portion.
Further, the bottom of the desulphurization denitration fluorine removal tower is provided with import, is provided at the top of desulphurization denitration fluorine removal tower
Outlet, the bottom of desulphurization denitration fluorine removal tower are provided with loop slurry, and slurries spray dress is provided in the middle part of desulphurization denitration fluorine removal tower
It sets, slurries spray equipment is connected to by circulation line with the loop slurry, and the loop slurry is also connected with slurries supply dress
It sets.
Further, the slurries feedway includes lime silo, weighing device and the lime dissolving tank being linked in sequence, stone
Grey dissolving tank is connected with technique water tank by water pipe, and lime dissolving tank passes through slurries feeding pipe and desulphurization denitration fluorine removal tower
Bottom connection.
Further, the side of the loop slurry is connected with melt pit, and melt pit is connected with accident water tank；The loop slurry
The other side is connected with vacuum belt machine, and vacuum belt machine connect with the quenched collecting-tank, is provided with below vacuum belt machine
Collection device.
Further, the top of the desulphurization denitration fluorine removal tower is arranged in the wet type electrostatic precipitator.
Further, described to take off white device include shell, and the bottom of shell is provided with cooling water, is provided in the middle part of shell cold
But spray equipment, cooling sprayer pass through cooling water circulation pipe and are connected to the cooling water, and the top setting of shell is
State blowdown stack.
Further, heat exchanger is provided between the cooling sprayer and blowdown stack, heat exchanger is connected with steaming
Vapour generator.
The above-mentioned technical proposal of the utility model have the advantages that the utility model be provided with quenched evaporating column,
Electrical tar precipitator, ozone denitrification apparatus, desulphurization denitration fluorine removal tower, wet type electrostatic precipitator and white device is taken off, realized for roasting
The comprehensive treatment for burning flue gas, so that the discharge index of flue gas is better than national standard from far away.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is the quenched evaporating column structural schematic diagram of the utility model embodiment；
Fig. 3 is the partial enlarged view in Fig. 1 at A；
Fig. 4 is that the utility model embodiment takes off white apparatus structure schematic diagram.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the utility model, but cannot be used to limit the scope of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term
The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.In the description of the present invention, it should be noted that unless otherwise specific regulation
And restriction, term " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
As shown in Figs 1-4, a kind of carbon baking kiln gas ultra-clean discharge cleaning equipment described in the present embodiment, including it is logical
Quenched evaporating column 10, electrical tar precipitator 20, air-introduced machine 30, ozone denitrification apparatus 40, the desulphurization denitration for crossing pipeline sequential connection remove
Fluorine tower 50, wet type electrostatic precipitator 60 and take off white device 70；Quenched evaporating column 10 passes through the outlet flue of air inlet smoke pipe 1 and roaster
It connects, is provided with fire arrester 3 on air inlet smoke pipe 1；It takes off white device 70 and is connected with blowdown stack 2.
The lower part of quenched evaporating column 10 is provided with import, and air inlet smoke pipe 1 is connected to entrance, the top of quenched evaporating column 10
It is connect with electrical tar precipitator 20；The middle part of quenched evaporating column 10 is provided with spray equipment 11, in the present embodiment, spray equipment 11
For atomizing lance, spray equipment 11 is connected with quenched collecting-tank 12, and the bottom of quenched evaporating column 10 is provided with water storage portion 13, water storage
The top in portion 13 is provided with baffling structure 14, and the bottom end of quenched evaporating column 10 is additionally provided with ash discharging hole 15, and the pollutant of discharge is received
It concentrates and is handled after collection.
Dry type electrical tar precipitator is the prior art, such as the utility model patent explanation in Publication No. " CN105195008A "
There is disclosure in book, therefore its structure be not further detailed herein, realizes and tar, the dust in exhaust gas are caught
Collection, plays the role of removal of impurities.
Ozone denitrification apparatus is equipment commonly used in the prior art, such as in the practical new of Publication No. " CN207356882U "
There is disclosure in type patent, its role is to provide ozone, the NO for being insoluble in water is oxidized to by ozone by NO soluble easily in water2、
N2O3、N2O5Etc. high-valence states oxynitrides, be convenient for subsequent process.
The bottom of desulphurization denitration fluorine removal tower 50 is provided with import, and the top of desulphurization denitration fluorine removal tower 50 is provided with outlet, takes off
The bottom of sulphur denitration fluorine removal tower 50 is provided with loop slurry 51, and the middle part of desulphurization denitration fluorine removal tower 50 is provided with slurries spray equipment
52, slurries spray equipment 52 is connected to by circulation line 53 with loop slurry 51, and the pump on circulation line 53 is by loop slurry 51
It is delivered to slurries spray equipment 52 by circulation line 53, slurries spray equipment 52 sprays downwards slurries, and then to upper
The flue gas risen is handled, and loop slurry 51 is also connected with slurries feedway；Slurries feedway includes the stone being linked in sequence
Ash cellar 54, weighing device 55 and lime dissolving tank 56, lime dissolving tank 56 are connected with technique water tank 4 by water pipe 81,
Connection of the lime dissolving tank 56 by the bottom of slurries feeding pipe 82 and desulphurization denitration fluorine removal tower 50, the work of slurries feedway
Make principle are as follows: by desulphurization denitration defluorinating agent (lime stone or carbide slag etc.) let-down to weighing device 55 in lime silo 54, to
After obtaining the desulphurization denitration defluorinating agent of required weight, the outlet of lime silo 54, the desulphurization denitration fluorine removal that then will be weighed up are closed
Agent is transported in lime dissolving tank 56, and technique water tank 4 supplies water to lime dissolving tank 56 by water pipe 81, until reaching
Preset water is then shut off water pipe 81, and the desulphurization denitration defluorinating agent in lime dissolving tank 56 is stirred with water
It is even, the slurries made then are delivered to by desulphurization denitration fluorine removal tower 50 by slurries feeding pipe 82, complete the supply of slurry.
Loop slurry 51 is internally provided with agitating device 511, desulphurization denitration fluorine removal tower 50 corresponding to loop slurry 51
Side wall on be provided with oxidation fan 512, the setting of agitating device 511 is in order to avoid slurries precipitating, oxidation fan 512 occurs
For conveying air (oxygen) into loop slurry 51, in favor of the progress of relevant chemical reaction.
The side of loop slurry 51 is connected with melt pit 57 by the first discharge line 83, and melt pit 57 passes through the second discharge line
84 are connected with accident water tank 58, and melt pit 57 empties the loop slurry in tower for desulphurization denitration fluorine removal tower 50 when maintenance,
Accident water tank 58 is used for interim storage loop slurry；The other side of loop slurry 51 is connected with very by third discharge line 85
Empty belt feeder 59, vacuum belt machine 59 are connect with quenched collecting-tank 12, and the lower section of vacuum belt machine 59 is provided with collection device
510, after running a period of time, since a series of reaction can accumulate gypsum (by-product inside desulphurization denitration fluorine removal tower 50
Product), the gypsum with liquid is moved on vacuum belt machine 59 by third discharge line 85, carries out the separation of solid-liquid,
Middle liquid feeds pipeline 86 by temper water and flows in quenched collecting-tank 12, uses for the spray equipment 11 of quenched evaporating column 10,
The self-sufficient of system is realized, the utilization rate of resource is improved, and after solid is separated, it enters in collection device 510, it can
For realizing secondary use for filling out road, brickmaking etc..
Third discharge line 85 is connect by the 4th discharge line 87 with accident water tank 58.
Wherein, vacuum belt machine 59 is to commonly use solid-liquid separating equipment in the art.
The top of desulphurization denitration fluorine removal tower 50 is arranged in wet type electrostatic precipitator 60, and wet type electrostatic precipitator 60 is in the art normal
Equipment such as discloses opposite structure in Publication No. " CN203830149U ", and details are not described herein, working principle
Are as follows: for flue gas by high voltage electric field, high voltage electric field makes flue dust and droplet electrification in flue gas, forms charged ion, charged ion to
The electrode movement of opposite charges, charged ion discharge after reaching electrode, form neutral dirt, mist particle, are deposited on electrode
Agglutination is landed and is removed.
Preferably, flushing dress is respectively arranged in the respective top of wet type electrostatic precipitator 60 in desulphurization denitration fluorine removal tower 50
It sets, flusher is connect by flushing pipeline with technique water tank 4, is regularly cleaned, is guaranteed normal clean-up effect.
Taking off white device 70 includes shell 71, and the bottom of shell 71 is provided with cooling water 72, and the middle part of shell 71 is provided with cold
But spray equipment 73, cooling sprayer 73 pass through cooling water circulation pipe 74 and are connected to cooling water 72, and the top of shell 71 is set
It is equipped with blowdown stack 2.
Heat exchanger 75 is provided between cooling sprayer 73 and blowdown stack 2, heat exchanger 75 is connected with steam hair
Hot steam is passed into heat exchanger 75 by raw device 76, steam generator 76, and heat exchanger 75 heats up flue gas, to meet
Technique requirement.
A kind of purification method purified using above-mentioned carbon baking kiln gas ultra-clean discharge cleaning equipment, including
Following steps:
(1) quenched evaporization process:
The flue gas come out from roaster is entered by the import of quenched evaporating column 10, first by baffling structure 14, in baffling
In structure 14 when baffling, high velocity smoke impact, the water storage portion 13 for contacting bottom, so that the large dust particle in flue gas is direct
It is captured by the water, then exhaust gas being flowed in quenched evaporating column 10 from the bottom to top, spray equipment 11 cools down to exhaust gas, increases
It is wet, a small amount of waste water is formed, due to heat exchange action, waste water is evaporated, and mixed exhaust gas is arranged by the outlet of quenched evaporating column 10
Out, outlet temperature is controlled at 80-90 DEG C, flue gas cross sectional flow rate is controlled in 1.5-2.5m/s；
(2) electrically trapped tar oil process:
Electrical tar precipitator 20 traps tar, the dust in exhaust gas, and in the present embodiment, electrical tar precipitator 20 is dry
Formula electrical tar precipitator, field gas velocity control are controlled in 0.4-0.8m/s, electric field strength in 8-12m.
(3) ozone denitration process:
The lower valency oxynitrides for being not readily dissolved in water is forced oxidation using the strong oxidizing property of ozone by ozone denitrification apparatus
At high-valence state oxynitrides soluble easily in water, specific principle are as follows: NO in flue gasxMain composition be NO (accounting for 95%), NO
It is insoluble in water, and the NO of high-valence state2、N2O5Etc. water-soluble generation HNO2And HNO3, solvability greatly enhances, so as to it is rear
The SO2 of phase absorbs in desulfurizing tower simultaneously, achievees the purpose that simultaneous SO_2 and NO removal, ozone as a kind of clean strong oxidizer,
NO fast and effeciently can be oxidized to high-valence state, O3Life cycle it is longer, O will be generated after a small amount of oxygen or air ionization3,
It is then sent through in flue gas, can obviously reduce energy consumption, carry out desulphurization denitration currently with ozone and at home and abroad have engineer application reality
, the oxidation mechanism of NO, O during ozone simultaneous SO_2 and NO removal3With NOxBetween specific chemical reaction mechanism.
Under cryogenic conditions, O3Key reaction between NO is as follows:
NO+O3→NO2+O2 (1)
NO2+O3→NO3+O2 (2)
NO3+NO2→N2O5 (3)
NO+O+M→NO2+M (4)
NO2+O→NO3 (5)
By above-mentioned reaction, NO is oxidized to high-valence state oxynitrides, and then be convenient for the progress of subsequent technique, O3With NO
Molar ratio control is 1-2.5: 1.
(4) desulphurization denitration fluorine removal process:
Flue gas enters from the bottom of desulphurization denitration fluorine removal tower 50, sulfide, nitrogen in the uphill process of exhaust gas, in flue gas
Compound and fluoride are contacted with the alkaline slurry that slurries spray equipment 52 sprays, and reaction generates gypsum, calcium nitrate, calcirm-fluoride,
Specific working principle are as follows: (1) SO2, HF, N in flue gas2O5It is dissolved in water, generate sulfurous acid and is dissociated into H+、HSO3 -Ion；
2. oxygen in the air that oxygen in flue gas and oxidation fan 512 are sent into is by HSO in solution3 2-It is oxidized to SO4 2-；3. in absorbent
Calcium carbonate dissociates Ca in solution under certain condition2+；4. the SO in absorption tower, in solution4 2-、Ca2+And water reaction life
At gypsum (CaSO4·2H2O), chemical equation difference is as follows:
①SO2+H2O→H2SO3→H++HSO3-
②H++HSO3-+1/2O2→2H++SO42-
③CaCO3+2H++H2O→Ca2++2H2O+CO2↑
④Ca2++SO4 2-+2H2O→CaSO4·2H2O
⑤Ca2++F-→CaF2↓
Since serum recycle amount is big and the feeding of oxidation air, the HSO in 50 lower part stock tank of desulphurization denitration fluorine removal tower3-Or it is sub-
Sulfate almost all is oxidized to sulfate radical or sulfate, finally in CaSO4After reaching certain degree of supersaturation, crystallization forms stone
Cream CaSO4·2H2O, gypsum can carry out secondary use, and specific application method has recorded in the description above.
PH value in desulphurization denitration fluorine removal tower 50 is controlled in 5-6, cross sectional flow rate 3-3.5m/s, liquid-gas ratio 8-15L/
m3。
(5) wet type electricity demisting process:
The micro dust such as part gypsum, lime stone and steam, wet type electricity are entrained in a upper process treated flue gas
Demister 60 plays the role of removing fine particle and droplet, the electric field effective length for electrostatic precipitator 60 of having a try be not less than 6m,
Field gas velocity is not more than 1.85m/s, and the electric field residence time is not less than 3s, is regularly rinsed.
(6) white process is taken off:
Treated that flue-gas temperature is down to 45-55 DEG C for a upper process, the typically saturated wet flue gas of flue gas at this time, in flue gas
Containing a large amount of vapor, in vapor containing dissolubility salt, SO3, gel dust, micronic dust etc. (be all haze it is main at
Point), if flue gas is expelled directly out by chimney, into the lower surrounding air of temperature, due to the saturated humidity ratio of surrounding air
Lower, during flue-gas temperature reduces, the wet plume that the water vapour in flue gas can condense formation causes visual pollution, by cold
But 73 pairs of saturation wet flue gas of spray equipment cool down, and flue gas condensing goes out portion of water and flue gas still in saturation after cooling
State heats up to saturated flue gas followed by heat exchanger 75, and when being warming up to 70 DEG C, saturated flue gas is changed into unsaturation
Flue gas, flue gas are still in unsaturated state when spreading completely in air, exhaust emissions meets the condition that white plumage disappears.
In taking off white process, white device input gas temperature is taken off :≤55 DEG C；Cool down condenser system outlet temperature :≤atmosphere
+ 5 DEG C of environment temperature；Temperature elevation system outlet temperature: >=70 DEG C.
Final flue gas emission index can reach claimed below:
Sulfur dioxide < 10mg/Nm3(national standard < 100mg/Nm3)
Dust < 5mg/Nm3(national standard < 10mg/Nm3)
Glance coal < 5mg/Nm3(national standard < 20mg/Nm3)
Nitrogen oxides < 30mg/Nm3(national standard < 100mg/Nm3)
Fluoride < 3mg/Nm3(national standard < 3mg/Nm3)
It can be seen that the flue gas handled by the utility model, it will be apparent that be better than national standard, there is good improvement effect
Fruit.
The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustively or to incite somebody to action
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes this field
Those of ordinary skill it will be appreciated that the utility model to designing various embodiments suitable for specific applications with various modifications.
Claims (8)
1. a kind of carbon baking kiln gas ultra-clean discharges cleaning equipment, which is characterized in that including what is be linked in sequence by pipeline
It quenched evaporating column, electrical tar precipitator, air-introduced machine, ozone denitrification apparatus, desulphurization denitration fluorine removal tower, wet type electrostatic precipitator and takes off white
Device；
The quenched evaporating column is connected by the outlet flue of air inlet smoke pipe and roaster；
It is described to take off white device and be connected with blowdown stack.
2. a kind of carbon baking kiln gas ultra-clean according to claim 1 discharges cleaning equipment, which is characterized in that described
The lower part of quenched evaporating column is provided with import, and the air inlet smoke pipe is connected to entrance, the top of the quenched evaporating column and institute
State electrical tar precipitator connection；
Spray equipment is provided in the middle part of the quenched evaporating column, spray equipment is connected with quenched collecting-tank, the quenched evaporation
The bottom of tower is provided with water storage portion, and baffling structure is provided with above water storage portion.
3. a kind of carbon baking kiln gas ultra-clean according to claim 2 discharges cleaning equipment, which is characterized in that described
The bottom of desulphurization denitration fluorine removal tower is provided with import, and outlet, desulphurization denitration fluorine removal tower are provided at the top of desulphurization denitration fluorine removal tower
Bottom be provided with loop slurry, slurries spray equipment is provided in the middle part of desulphurization denitration fluorine removal tower, slurries spray equipment passes through
Circulation line is connected to the loop slurry, and the loop slurry is also connected with slurries feedway.
4. a kind of carbon baking kiln gas ultra-clean according to claim 3 discharges cleaning equipment, which is characterized in that described
Slurries feedway includes lime silo, weighing device and the lime dissolving tank being linked in sequence, and lime dissolving tank passes through water supply pipe
Road is connected with technique water tank, the connection that lime dissolving tank passes through the bottom of slurries feeding pipe and desulphurization denitration fluorine removal tower.
5. a kind of carbon baking kiln gas ultra-clean according to claim 4 discharges cleaning equipment, which is characterized in that described
The side of loop slurry is connected with melt pit, and melt pit is connected with accident water tank；The other side of the loop slurry is connected with vacuum skin
Band machine, vacuum belt machine are connect with the quenched collecting-tank, and collection device is provided with below vacuum belt machine.
6. a kind of carbon baking kiln gas ultra-clean according to claim 5 discharges cleaning equipment, which is characterized in that described
The top of the desulphurization denitration fluorine removal tower is arranged in wet type electrostatic precipitator.
7. a kind of carbon baking kiln gas ultra-clean according to claim 6 discharges cleaning equipment, which is characterized in that described
Taking off white device includes shell, and the bottom of shell is provided with cooling water, cooling sprayer, chilling spray are provided in the middle part of shell
Device passes through cooling water circulation pipe and is connected to the cooling water, and the top of shell is provided with the blowdown stack.
8. a kind of carbon baking kiln gas ultra-clean according to claim 7 discharges cleaning equipment, which is characterized in that described
Heat exchanger is provided between cooling sprayer and blowdown stack, heat exchanger is connected with steam generator.
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| CN201821816443.8U CN209138320U (en) | 2018-11-06 | 2018-11-06 | A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment |
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| CN201821816443.8U CN209138320U (en) | 2018-11-06 | 2018-11-06 | A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment |
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| CN209138320U true CN209138320U (en) | 2019-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224808A (en) * | 2018-11-06 | 2019-01-18 | 河北金科环保设备有限公司 | A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment and purification method |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224808A (en) * | 2018-11-06 | 2019-01-18 | 河北金科环保设备有限公司 | A kind of carbon baking kiln gas ultra-clean discharge cleaning equipment and purification method |
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