CN107890776A - A kind of middle low-temperature flue gas de-dusting de-nitration integrated and method - Google Patents
A kind of middle low-temperature flue gas de-dusting de-nitration integrated and method Download PDFInfo
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- CN107890776A CN107890776A CN201711401921.9A CN201711401921A CN107890776A CN 107890776 A CN107890776 A CN 107890776A CN 201711401921 A CN201711401921 A CN 201711401921A CN 107890776 A CN107890776 A CN 107890776A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000003546 flue gas Substances 0.000 title claims abstract description 60
- 238000010410 dusting Methods 0.000 title claims abstract description 13
- 238000006396 nitration reaction Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000428 dust Substances 0.000 claims abstract description 35
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 19
- 230000023556 desulfurization Effects 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000003517 fume Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims abstract description 3
- 238000007906 compression Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 57
- 239000003054 catalyst Substances 0.000 claims description 33
- 239000000571 coke Substances 0.000 claims description 23
- 238000010791 quenching Methods 0.000 claims description 16
- 230000000171 quenching effect Effects 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 10
- 239000008246 gaseous mixture Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 9
- 238000003795 desorption Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention relates to a kind of middle low-temperature flue gas de-dusting de-nitration integrated and method, described device includes dust separation unit, ammonia empty mixing penetrating unit, heat exchange unit and the denitration unit being successively set on from bottom to top in a tower body；Circumferentially arranged with multiple air inlets, each air inlet connects one end of flue gas intake stack by winding pipe respectively for the tower body bottom of the dust separation unit, and the other end of flue gas intake stack is connected with the desulfurization fume outlet of outside desulfurization unit；The uniform deflector of air inlet and filter bag are provided with the tower body of dust separation unit, multiple rows of filter bag is distributed in tower body vertically, the uniform deflector of air inlet is set between filter bag and air inlet, filter bag top sets pulse spraying equipment, pulse spraying equipment connection external compression airflow pipe.The present invention integrates dedusting, heat exchange, denitration, and to dust, NOx removal efficiency high, apparatus structure is simple, reliable, and investment operating cost is low, service life length.
Description
Technical field
The present invention relates to cock-oven gas purifying technical field, more particularly to a kind of middle low-temperature flue gas dedusting denitrification integral dress
Put and method.
Background technology
At present, country is to environmental requirement more and more higher,《Coking chemistry emission of industrial pollutants standard》(GB16171-
2012) dust is discharged to coke oven stack gases and NOx is limited, forbid to discharge without the flue gas for handling up to standard.It is right at this stage
Coke oven flue exhaust gas and dust and NOx treatment technology mainly have wet dedusting denitration technology, activated carbon dedusting denitration technology and in
Low-temperature flue gas dedusting denitration and denitrating catalyst Thermal desorption integrated technique, but these technologies all exist in actual moving process
Some drawbacks.
The big generation secondary pollution of wet dedusting denitration technology system complex, water consumption, and NOx oxidation efficiency is not high makes
Into resource serious waste, prohibited in some local governments using wet dedusting denitration technology.
Activated carbon dedusting denitration technology easily forms focus, there is a fire hazard, and equipment volume is huge；It is and actual at this stage to answer
It is less with example, still in the pilot plant test stage.
Patent No. ZL201410478420.0 Chinese patent disclose it is a kind of " middle low-temperature flue gas desulfurization and dedusting denitration and
Denitrating catalyst Thermal desorption integrated apparatus ", including be integrated in from the bottom to top in a tower body desulfurization dust clean-up stage, parsing
Ammonia mixing section and denitration reaction section are sprayed, first passing through does not have the desulfurizing agent reacted completely and Desulphurization in sock filtration flue gas, make cigarette
Then ammonia is sprayed into the cigarette after sock filtration by gas by fully contacting further desulfurization with desulfurizing agent during Chalk-dust filtering layer
It is sufficiently mixed in gas with it, then air is discharged into after denitrating catalyst denitration；High temperature pyrolysis analysis apparatus is set to denitration catalyst simultaneously
Agent carries out online Thermal desorption regeneration, and low-temperature denitration catalyst continues service life in holding；Pass through filter bag and mixing current equalizing structure
Body is set, and velocity of flue gas field and temperature field is integrally disguised in middle low-temperature flue gas desulfurization and dedusting denitration and denitrating catalyst Thermal desorption
Put interior uniform, realize the purpose of NO_x Reduction by Effective；High-temperature gas caused by high temperature pyrolysis gassing body generally use hot-blast stove, but
To be invented in engineering actual motion, hot-blast stove is acted on less the Thermal desorption of catalyst, is used as heating flue gas, and
And situations below can be caused：1) hot-blast stove cost of investment is high, increases construction investment operating cost；2) hot-blast stove is because it passes through blending
The scheme that high-temperature flue gas makes exhaust gas volumn heat up certainly will cause to handle flue gas increase, increase construction investment operating cost；3) hot-blast stove
Need to carry out the chain complexity for increasing whole system with whole system；4) hot-blast stove control is bad easily there are new NOx generations,
Increase the operating load of equipment.To be significantly larger than in the market in the catalyst price selected in addition for low-temperature flue gas characteristic in adaptation
Typical catalyst, cause engineering cost increase a lot.
On the other hand, existing coke-oven plant is mainly used with N mainly based on CDQ during dry coke quenching2Based on
Gas STRENGTH ON COKE cooled down, be up to 900~980 DEG C with the gas temperature after coke heat, utilize this high-temperature gas waste heat
Being used using, turbine generator output generated energy factory complete enough and superfluous, the unnecessary grid-connected valency of electricity is generally uneconomical, therefore in factory
It is interior to provide one the approach of providing auxiliary power amount unnecessary high-temperature flue gas in other words be made full use of to be more beneficial for reducing the throwing of whole factory
Money, operating cost.
The content of the invention
The present invention combines existing middle low-temperature flue gas dedusting denitration technology and dry coke quenching UTILIZATION OF VESIDUAL HEAT IN present situation, there is provided Yi Zhongzhong
Low-temperature flue gas de-dusting de-nitration integrated and method, integrate dedusting, heat exchange, denitration, to dust, NOx removal efficiency high,
Apparatus structure is simple, reliable, and investment operating cost is low, service life length.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of middle low-temperature flue gas de-dusting de-nitration integrated, including removing in a tower body is successively set on from bottom to top
Dirt clean unit, ammonia-sky mixing spray into unit, heat exchange unit and denitration unit, tower body bottom and set ash bucket and unloading valve, tower body top
Portion sets net gas outlet；The tower body bottom side of the dust separation unit is provided with multiple air inlets, and each air inlet passes through respectively
Winding pipe connects one end of flue gas intake stack, and the desulfurization fume of the other end of flue gas intake stack and outside desulfurization unit goes out
Mouth is connected；The uniform deflector of air inlet and filter bag are provided with the tower body of dust separation unit, multiple rows of filter bag is distributed in tower body vertically,
The uniform deflector of air inlet is set between filter bag and air inlet, filter bag top sets pulse spraying equipment, and pulse spraying equipment connection is outside
Compressed air tunnel.
The air inlet sets valve respectively.
The ammonia-sky mixing sprays into unit and is made up of gas mixer and ammonia-spraying grid, and gas mixer sets the empty mixing of ammonia
Gas entrance, smoke inlet and mixed gas outlet, wherein ammonia sky gaseous mixture entrance connection external ammonia sky mixed gas pipeline road, ammonia
Ammonia-spraying grid is set on the inside of empty gaseous mixture entrance；Smoke inlet is located at gas mixer bottom；Mixed gas outlet is located at gas
The top of blender.
The heat exchange unit is made up of the horizontally disposed heat-exchanging tube bundle of multiple rows of multiple row, forms every heat exchanger tube of heat-exchanging tube bundle
Periphery is equipped with radiated rib, the heat transferring medium entrance connection dry coke quenching high-temperature gas conveyance conduit of heat-exchanging tube bundle, heat-exchanging tube bundle
Heat transferring medium outlet by vapor return pipeline connect dry coke quenching residual heat boiler.
The denitration unit is made up of N+1 layer denitrating catalysts, and wherein N layers are work denitration catalyst oxidant layer, and one layer is
Standby denitration catalyst oxidant layer；Denitration unit sets sound wave ash cleaner.
Middle low-temperature flue gas dedusting denitrification integral method based on described device, caused flue gives up in coke oven production process
Gas is after desulfurization unit desulfurization, under the swabbing action of blower fan, is entered by one or more air inlets in dust separation unit,
After the uniform deflector of air inlet is uniform, the high removal efficiency of dust is realized under filter bag effect；The flue gas of dust has been removed to upstream
In dynamic process, spray into unit by ammonia-sky mixing and mix ammonia-air gas mixture with flue gas Quick uniform, Ran Hou
Exchanged heat in heat exchange unit with dry coke quenching high-temperature gas, flue-gas temperature is reached denitrating catalyst reaction temperature, last flue gas enters
In denitration unit, the efficient removal of NOx in flue gas is realized, purified gas is discharged at the top of tower body.
Compared with prior art, the beneficial effects of the invention are as follows：
1) dust separation unit uses Bag filter flue gas, can ensure the high clearance of dust, and can be very good
Adapt to the fluctuation situation of dust in flue gas, qualified discharge；
2) the valvular air inlet of multiple bands is used, is advantageous to airflow uniform distribution, crushing reduces；
3) the uniform deflector of air inlet is set, effectively avoids dust from directly washing away filter bag, protection well is played to filter bag and is made
With extending the service life of filter bag；
4) ammonia-sky mixing sprays into the structure type that unit uses ammonia-spraying grid, on the basis of ensureing that ammonia penetrating is uniform,
It can realize that ammonia rapidly and uniformly mixes with flue gas；
5) heat exchange unit uses the structure type with radiated rib heat-exchanging tube bundle, effective improving heat exchanging efficiency, increases flue gas
Residence time, ensure catalytic reaction temperature, and play a part of uniform air-flow；
6) flue-gas temperature can effectively be lifted to catalyst reaction temperature as heat transferring medium using dry coke quenching high-temperature flue gas
Degree, realizes the efficient utilization of the unnecessary high-temperature flue gas of dry coke quenching, substantially reduces engineering cost；
7) denitration unit uses N+1 structure type, it is ensured that denitration persistent high efficiency, can use common denitration catalyst
Agent, effectively reduce operating cost.
8) connectedness of denitrating catalyst hole can be ensured using sound wave ash cleaner, play the long-term of denitrating catalyst
Efficient catalytic acts on.
Brief description of the drawings
Fig. 1 is a kind of front view of middle low-temperature flue gas de-dusting de-nitration integrated of the present invention.
Fig. 2 is the A direction views in Fig. 1.
In figure：1. the ammonia of dust separation unit 2.-sky mixing sprays into the ash bucket of 3. heat exchange unit of unit, 4. denitration unit 5.
6. the heat-exchanging tube bundle 12. of 10. gas mixer of the air inlet of air inlet 7. 9. pulse spraying equipment of uniform 8. filter bag of deflector 11.
Denitrating catalyst
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, a kind of middle low-temperature flue gas de-dusting de-nitration integrated of the present invention, including from bottom to top
Dust separation unit 1, ammonia-sky mixing penetrating unit 2, heat exchange unit 3 and the denitration unit 4 being successively set in a tower body,
Tower body bottom sets ash bucket 5 and unloading valve, and net gas outlet is set at the top of tower body；The tower body bottom side of the dust separation unit 1
Provided with multiple air inlets 6, each air inlet 6 connects one end of flue gas intake stack, flue gas intake stack by winding pipe respectively
The desulfurization fume outlet of the other end and outside desulfurization unit be connected；Uniformly led provided with air inlet in the tower body of dust separation unit 1
Flowing plate 7 and filter bag 8, multiple rows of filter bag 8 are distributed in tower body vertically, and the uniform deflector 7 of air inlet is set between filter bag 8 and air inlet 6, filter
8 tops of bag set pulse spraying equipment 9, and pulse spraying equipment 9 connects external compression airflow pipe.
The air inlet 6 sets valve respectively.
The ammonia-sky mixing sprays into unit 2 and is made up of gas mixer 10 and ammonia-spraying grid, and gas mixer 10 sets ammonia sky
Gaseous mixture entrance, smoke inlet and mixed gas outlet, wherein ammonia sky gaseous mixture entrance connect external ammonia sky mixed gas pipeline
Road, ammonia-spraying grid is set on the inside of ammonia sky gaseous mixture entrance；Smoke inlet is located at the bottom of gas mixer 10；Mixed gas outlet is set
In the top of gas mixer 10.
The heat exchange unit 3 is made up of the horizontally disposed heat-exchanging tube bundle 11 of multiple rows of multiple row, every of composition heat-exchanging tube bundle 11
Heat exchanger tube periphery is equipped with radiated rib, and the heat transferring medium entrance of heat-exchanging tube bundle 11 connects dry coke quenching high-temperature gas conveyance conduit,
The heat transferring medium outlet of heat-exchanging tube bundle 11 connects dry coke quenching residual heat boiler by vapor return pipeline.
The denitration unit 4 is made up of N+1 layers denitrating catalyst 12, and wherein N layers are work denitration catalyst oxidant layer, one layer
For standby denitration catalyst oxidant layer；Denitration unit sets sound wave ash cleaner.
Middle low-temperature flue gas dedusting denitrification integral method based on described device, caused flue gives up in coke oven production process
Gas is after desulfurization unit desulfurization, under the swabbing action of blower fan, enters dust separation unit 1 by one or more air inlets 6
It is interior, after the uniform deflector 7 of air inlet is uniform, the high removal efficiency of dust is realized under the effect of filter bag 8；Removed the flue gas of dust to
During upper flowing, spray into unit 2 by ammonia-sky mixing and mix ammonia-air gas mixture with flue gas Quick uniform, so
Exchanged heat afterwards in heat exchange unit 3 with dry coke quenching high-temperature gas, flue-gas temperature is reached denitrating catalyst reaction temperature, last flue gas
Into in denitration unit 4, the efficient removal of NOx in flue gas is realized, purified gas is discharged at the top of tower body.
Exhaust gas dust such as after desulfurization unit is up to standard, then can cancel dust separation unit 1, flue gas directly enters
Enter ammonia-sky mixing and spray into unit 2.
When the resistance of filter bag 8 in dust separation unit 1 is excessive, unbalanced pulse blowing device 9 carries out deashing to filter bag 8,
Ensure the long-term effective use of filter bag 8.
Dry coke quenching high-temperature gas is passed through in the heat-exchanging tube bundle 11 of heat exchange unit 3, the gas after heat exchange is connected to dry coke quenching waste heat
Boiler is used for UTILIZATION OF VESIDUAL HEAT IN and turbine generator.
The installation site of N+1 layers denitrating catalyst 12 is reserved in denitration unit 4, N layers denitrating catalyst 12 is arranged when newly-started,
When NOx occurs exceeded in net gas, new denitrating catalyst 12 is placed in remaining 1 layer；When NOx surpasses again in net gas
Timestamp, the orlop for the N layers denitrating catalyst 12 first placed is taken out and changed, is only needed in order when occurring exceeded every time afterwards
Denitrating catalyst 12 is taken out to replacing successively.
When denitration unit 4 detects that pressure drag is increased to preset value, sound wave ash cleaner is opened, denitrating catalyst 12 is entered
Row cleaning, ensure the long-acting efficient of denitrating catalyst 12.
A kind of middle low-temperature flue gas de-dusting de-nitration integrated of the present invention can not only realize the unnecessary high temperature of dry coke quenching
Gas makes full use of, and has the characteristics that cost of investment is low, simple in construction, dedusting denitration efficiency is high, service life is long, energy
Dust and NOx in enough purifications very well in low-temperature flue gas, realize qualified discharge.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of middle low-temperature flue gas de-dusting de-nitration integrated, it is characterised in that including being successively set on one from bottom to top
Dust separation unit, ammonia-sky mixing in tower body sprays into unit, heat exchange unit and denitration unit, tower body bottom and sets ash bucket and unload
Grey valve, tower body top set net gas outlet；The tower body bottom side of the dust separation unit is provided with multiple air inlets, each air intake
Mouth connects one end of flue gas intake stack, the other end of flue gas intake stack and outside desulfurization unit by winding pipe respectively
Desulfurization fume outlet is connected；The uniform deflector of air inlet and filter bag are provided with the tower body of dust separation unit, multiple rows of filter bag is equal vertically
Cloth sets the uniform deflector of air inlet in tower body, between filter bag and air inlet, and filter bag top sets pulse spraying equipment, pulse jet dress
Put connection external compression airflow pipe.
A kind of 2. middle low-temperature flue gas de-dusting de-nitration integrated according to claim 1, it is characterised in that the air intake
Mouth sets valve respectively.
A kind of 3. middle low-temperature flue gas de-dusting de-nitration integrated according to claim 1, it is characterised in that the ammonia-
Sky mixing sprays into unit and is made up of gas mixer and ammonia-spraying grid, and gas mixer sets ammonia sky gaseous mixture entrance, smoke inlet
And mixed gas outlet, wherein ammonia sky gaseous mixture entrance connect external ammonia sky mixed gas pipeline road, ammonia sky gaseous mixture entrance
Inner side sets ammonia-spraying grid；Smoke inlet is located at gas mixer bottom；Mixed gas outlet is located at the top of gas mixer.
A kind of 4. middle low-temperature flue gas de-dusting de-nitration integrated according to claim 1, it is characterised in that the heat exchange
Unit is made up of the horizontally disposed heat-exchanging tube bundle of multiple rows of multiple row, and every heat exchanger tube periphery for forming heat-exchanging tube bundle is equipped with cooling fin
Piece, the heat transferring medium entrance connection dry coke quenching high-temperature gas conveyance conduit of heat-exchanging tube bundle, the heat transferring medium outlet of heat-exchanging tube bundle are logical
Cross vapor return pipeline connection dry coke quenching residual heat boiler.
A kind of 5. middle low-temperature flue gas de-dusting de-nitration integrated according to claim 1, it is characterised in that the denitration
Unit is made up of N+1 layer denitrating catalysts, and wherein N layers are work denitration catalyst oxidant layer, and one layer is standby denitration catalyst oxidant layer；
Denitration unit sets sound wave ash cleaner.
A kind of 6. middle low-temperature flue gas dedusting denitrification integral method based on claim 1 described device, it is characterised in that coke oven
Caused stack gases under the swabbing action of blower fan, are entered after desulfurization unit desulfurization by one or more in production process
Air port enters in dust separation unit, and after the uniform deflector of air inlet is uniform, the high removal efficiency of dust is realized under filter bag effect；It is de-
Except the flue gas of complete dust is during flowing up, unit is sprayed into by ammonia-air gas mixture and cigarette by ammonia-sky mixing
Gas Quick uniform mixes, and is then exchanged heat in heat exchange unit with dry coke quenching high-temperature gas, flue-gas temperature is reached denitrating catalyst
Reaction temperature, last flue gas enter in denitration unit, realize the efficient removal of NOx in flue gas, and purified gas is from tower body top
Discharge in portion.
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| CN201711401921.9A CN107890776A (en) | 2017-12-22 | 2017-12-22 | A kind of middle low-temperature flue gas de-dusting de-nitration integrated and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711401921.9A CN107890776A (en) | 2017-12-22 | 2017-12-22 | A kind of middle low-temperature flue gas de-dusting de-nitration integrated and method |
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| CN107890776A true CN107890776A (en) | 2018-04-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554171A (en) * | 2018-05-08 | 2018-09-21 | 杨大鹏 | A kind of industrial smoke purifying |
| CN108636080A (en) * | 2018-05-08 | 2018-10-12 | 杨大鹏 | A kind of desulfurizing industrial fume denitration device |
| CN110743358A (en) * | 2019-11-12 | 2020-02-04 | 北京国电龙源环保工程有限公司 | Integrative device of modularization dust removal denitration |
| CN111701394A (en) * | 2020-07-21 | 2020-09-25 | 山东耀华能源投资管理有限公司 | Flue gas alternating-current type activated carbon desulfurization and denitrification integrated process system and application |
| CN112121591A (en) * | 2020-07-24 | 2020-12-25 | 中国科学院过程工程研究所 | Low-temperature flue gas activated carbon and catalytic filter tube composite purification process and application thereof |
| CN112742231A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Ammonia spraying static mixer and dust removal method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944565A (en) * | 2016-06-16 | 2016-09-21 | 北京方信立华科技有限公司 | Integrated energy-saving SCR denitration device |
| CN206526661U (en) * | 2016-11-25 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of waste heat boiler and Benitration reactor combined unit |
| CN206642490U (en) * | 2017-03-06 | 2017-11-17 | 安徽威达环保科技股份有限公司 | Low temperature SCR denitration cooperates with dust arrester in a kind of industrial smoke |
| CN207734844U (en) * | 2017-12-22 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of middle low-temperature flue gas de-dusting de-nitration integrated |
-
2017
- 2017-12-22 CN CN201711401921.9A patent/CN107890776A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105944565A (en) * | 2016-06-16 | 2016-09-21 | 北京方信立华科技有限公司 | Integrated energy-saving SCR denitration device |
| CN206526661U (en) * | 2016-11-25 | 2017-09-29 | 中国石油化工股份有限公司 | A kind of waste heat boiler and Benitration reactor combined unit |
| CN206642490U (en) * | 2017-03-06 | 2017-11-17 | 安徽威达环保科技股份有限公司 | Low temperature SCR denitration cooperates with dust arrester in a kind of industrial smoke |
| CN207734844U (en) * | 2017-12-22 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of middle low-temperature flue gas de-dusting de-nitration integrated |
Cited By (6)
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|---|---|---|---|---|
| CN108554171A (en) * | 2018-05-08 | 2018-09-21 | 杨大鹏 | A kind of industrial smoke purifying |
| CN108636080A (en) * | 2018-05-08 | 2018-10-12 | 杨大鹏 | A kind of desulfurizing industrial fume denitration device |
| CN112742231A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Ammonia spraying static mixer and dust removal method |
| CN110743358A (en) * | 2019-11-12 | 2020-02-04 | 北京国电龙源环保工程有限公司 | Integrative device of modularization dust removal denitration |
| CN111701394A (en) * | 2020-07-21 | 2020-09-25 | 山东耀华能源投资管理有限公司 | Flue gas alternating-current type activated carbon desulfurization and denitrification integrated process system and application |
| CN112121591A (en) * | 2020-07-24 | 2020-12-25 | 中国科学院过程工程研究所 | Low-temperature flue gas activated carbon and catalytic filter tube composite purification process and application thereof |
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Application publication date: 20180410 |