CN109745813A - Nitre dehydration integrated tower and its application method drop in YZ type vortex mixed desulfurization and dedusting - Google Patents
Nitre dehydration integrated tower and its application method drop in YZ type vortex mixed desulfurization and dedusting Download PDFInfo
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- CN109745813A CN109745813A CN201810271499.8A CN201810271499A CN109745813A CN 109745813 A CN109745813 A CN 109745813A CN 201810271499 A CN201810271499 A CN 201810271499A CN 109745813 A CN109745813 A CN 109745813A
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- nitre
- desulfurization
- water
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- dedusting
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- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 72
- 230000023556 desulfurization Effects 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000018044 dehydration Effects 0.000 title claims abstract description 12
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000003546 flue gas Substances 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims description 72
- 239000003245 coal Substances 0.000 claims description 52
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 22
- 238000005260 corrosion Methods 0.000 claims description 22
- 239000002351 wastewater Substances 0.000 claims description 20
- 239000000779 smoke Substances 0.000 claims description 18
- 239000011593 sulfur Substances 0.000 claims description 16
- 229910052717 sulfur Inorganic materials 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 230000002421 anti-septic effect Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 9
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 238000007654 immersion Methods 0.000 claims description 8
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910001424 calcium ion Inorganic materials 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 5
- 239000006071 cream Substances 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims 2
- 210000000038 chest Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000003570 air Substances 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The present invention relates to the apparatus field field for using liquid to separate as release agent dispersed granules from gas, air, flue gas or steam, specially a kind of YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower.A kind of YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower, including boiler (1), it is characterized in that: further including economizer (2), air preheater (3), first order deduster (4), air-introduced machine (5), tower body (6), water proof separator (71) and dehydrator (72)；Sink (61), deflector (62) and dewatering plate (63) are equipped in tower body (6).A kind of application method of YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower, it is characterized in that: successively implementing as follows: 1. cool down dedusting；2. dropping nitre desulfurization；3. deslagging.Structure of the invention is compact, and clean effect is good, applied widely, and easy to operate, operating cost is low, low cost.
Description
Technical field
Equipment the present invention relates to using liquid to separate as release agent dispersed granules from gas, air, flue gas or steam
Field field, specially a kind of YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower and its application method.
Background technique
Currently, the specific gravity that coal accounts for total energy consumption is still very high in Chinese national economy life, reach 70% or so,
A large amount of consumption of coal lead to following problem: firstly, consumption of coal rapid development leads to huge pollutant emission load.At present
Coal in China consumption figure accounts for U.S. 50%, Yuan Chao (13.5%), European Union's (7.7%), Japanese (3.2%) of worldwide coal total quantity consumed etc.
Other economies, huge consumption of coal cause China's sulfur dioxide, nitrogen oxides, atmosphere mercury emission to be in global head
Position.Secondly, coal in China consumption space is unevenly distributed the weighing apparatus compound atmospheric environment problem of initiation area.Outstanding behaviours is with three
Ten groups, area (Jing-jin-ji region, the Yangtze River Delta and Pearl River Delta area) (Liaoning Middle, Shandong, Wuhan and its periphery, Chang Zhu Tan, Chengdu-Chongqing, straits
West bank, the Shanxi central and north, Guanzhong, Shanxi, Gan Ninghe Xinjiang Urumqi group of cities) be representative key area, unit area coal
Charcoal consumption figure is 4 times of average national level or so, and unit area pollutants emission intensity is 3 times of left sides of average national level
It is right；Since pollutant emission is intensive, vehicle guaranteeding organic quantity rapid development, heavy chemical industry are fast-developing in addition, various pollutants phase
Interaction is simultaneously transmitted at a distance, with PM2.5, O3, acid rain be characterized region composite type pollution in aggravation situation.Third, coal
Consumption structure is unreasonable to exacerbate city coal-smoke pollution.Power industry consumption of coal in China's only accounts for national consumption of coal at present
50% or so of total amount, a large amount of consumption of coal concentrate on Industrial Boiler, coke oven and building materials kiln, and complicated emission source is constituted
So that China becomes, global atmosphere contamination control system is the hugest, constitutes the most complicated, the maximum country of emission reduction difficulty, one
Determine also to exacerbate city coal-smoke pollution in degree.Finally, coal utilization and pollution control technology are horizontal lower to lead to pollutant
It is higher to discharge performance.Coal-burning boiler operating thermal efficiency in China's is 60% or so, lower than advanced country 15%~20% at present, and base
This does not have denitrification, and desulfurization and dedusting technology level are also relatively low.It is low that raw coal coal quality is poor, thermal coal enters to wash rate, also affects me
The pollution that caused by coal burning control effect of state, it is only 51% that China's raw coal, which averagely enters the rate of washing, at present, horizontal lower than developed country (55%~
90%).
The basic characteristics of China's energy resources are rich coal, oil-poor, few gas, by coal resources in China and petroleum, natural gas and water
It can be compared with non-renewable energy resources such as nuclear energy, the resource reserve conversion verified is standard coal, and coal accounts for 85% or more, therefore, with coal
Energy consumption structure based on charcoal will long-term existence, using coal will solve using various cleanings, efficient method optimizing
Energy problem, the main approach for ensureing national energy security.
Summary of the invention
In order to overcome the drawbacks of the prior art, provide that a kind of compact-sized, compact, clean effect be good, the scope of application
Extensively, easy to operate, operating cost is low, the cleaner of low cost, the invention discloses a kind of YZ type vortex mixed desulfurization to remove
Nitre dehydration integrated tower and its application method drop in dirt.
The present invention reaches goal of the invention by following technical solution:
A kind of YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, including boiler, boiler be equipped with burner hearth, chimney, slag chute,
Chain and scraper plate, the smoke outlet of roof of the furnace connect chimney, and the slag-drip opening face slag chute of burner hearth bottom, slag chute is interior to be set by chain
Have scraper plate, it is characterized in that: further include economizer, air preheater, first order deduster, air-introduced machine, tower body, water proof separator and
Dehydrator,
The smoke outlet of roof of the furnace is sequentially connected economizer, air preheater, first order deduster and air-introduced machine；
Sink, deflector and dewatering plate are equipped in tower body, tower body bottom is equipped with blowdown valve, after the exhaust outlet of air-introduced machine protrudes into tower body
The water inlet of face sink, is equipped with deflector in sink, the water inlet of the water outlet face slag chute of sink, the exhaust outlet of sink according to
It is secondary to connect chimney with dehydrator through water proof separator.
The YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, it is characterized in that: the air inducing air pressure of air-introduced machine
In 4700Pa~5400Pa, the tilt angle of deflector is at 20 °~40 °.
The YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, it is characterized in that: further include ultra-clean clarifier,
Ultra-clean clarifier is connected between dehydrator and chimney.
The application method of the YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower, it is characterized in that: by as follows
Step is successively implemented:
A. cool down dedusting: coal burning temperature is not higher than 950 DEG C in control boiler furnace, and coal generates after furnace chamber inner combustion
Flue gas with oxysulfide, nitrogen oxides, dirt etc. is simultaneously discharged from furnace exhaust mouth, and flue gas is successively through economizer and air preheat
Device is cooled to not higher than 100 DEG C, enters air-introduced machine after first order deduster dedusting after, and air-introduced machine exports smoke temperature≤90 DEG C；
If first order deduster uses bag filter, flue gas is successively cooled to through economizer and air preheater and is not higher than
Enter first order deduster after 160 DEG C to be cooled to again not higher than 100 DEG C；
B. drop nitre desulfurization: flue gas inputs tower body with eddy flow state under the action of air-introduced machine, flows in deflector plate and immersion
Under the action of plate, the water in flue gas and sink is sufficiently mixed, NO of the water to absorb 50% or more dissolution2With 70% or more vulcanization
Object, when coal sulfur content≤0.6%, (calcium, magnesium in coal produce the natural alkaline water that need not be introduced into slag chute in sink after burning
Raw calcium oxide and magnesia) or quick lime, sink lower part regular discharge or overflow acid water and body refuse are added, complete flue gas
Dedusting, desulfurization, drop nitre work；As the sulfur content > 0.6% of coal, the natural alkaline water in slag chute is introduced after dust removal and filtration
As drop nitre desulfurizing agent to improve desulfurization degree and drop nitre rate in sink；In the alkaline water in acid water and slag chute being discharged in tower
With, if the water pH value < 7 in slag chute, with lime doser, into tower, feeding lime cream does supplement desulfurizing agent, drop nitre agent, with
Desulfurization degree is set to be greater than 90%, drop nitre rate successively through water proof separator and takes off 70%~80% through drop nitre, desulfurization and the flue gas of dedusting
Atmosphere is discharged by chimney after hydrophone；
C. deslagging: the water in sink flows into slag chute after implementing drop nitre, desulfurization, dust removal process to flue gas, puts into anti-corrosion group in slag chute
Dirty agent, anti-corrosion group dirt agent possess a variety of prefilming agents, prevent slag chute and chain fouling and corrosion, in antiseptic corrosion inhibitor and slag chute
Calcium and magnesium ion forms flocculent deposit, and flocculent deposit plays lubricating action to the chain for hanging scraper plate, while flocculent deposit can prevent
The waste water of desulfurization and dedusting drop nitre forms inflexible mud.
It is world-famous puzzle that the waste water of desulfurization and dedusting drop nitre, which forms inflexible mud, will generally invest to build huge desulfurization drop glass gall
Slag is fished out with slag bucket in pond, and the present invention has been due to having abolished inflexible mud problem, without building pond, merely with the slag chute and slag chute of boiler
Interior chain can complete slagging-off work, and clinker is used to bake bricks, and accomplish waste zero-emission.Water in slag chute not outlet, accomplishes
Wastewater zero discharge.
The application method of the YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower, it is characterized in that:
When being equipped with ultra-clean clarifier, then when step b, the flue gas through drop nitre and desulfurization is successively through water proof separator and dehydrator
Afterwards, then successively atmosphere is discharged into through ultra-clean clarifier and chimney.
The principle that the present invention is combined using physics with chemistry, flue gas enter economizer, sky after coming out from boiler or kiln
Temperature is reduced to 100 DEG C or less by air preheater；Flue gas after cooling enters air-introduced machine after first order dedusting, from air inducing
The flue gas that machine comes out enters YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower；With water (using low under rotation status
When sulphur coal) or alkaline water when sulphur coal (use) containing quick lime slurries be sufficiently mixed, reach substantially desulfurization and dedusting drop nitre
Effect；Finally enter smoke stack emission after dehydrator is dehydrated.If completing the flue gas after four tasks into chimney stack, protect
Exhaust gas temperature >=70 DEG C are held, if keeping exhaust gas temperature >=35 DEG C into short chimney (< 30m high).
Economizer and air preheater are run theoretical using full adverse current, it is ensured that pot when exhaust gas temperature is greater than 50 DEG C
Furnace does not condense, to guarantee to recycle 5%~10% energy from boiler smoke, using boiler thermal efficiency >=90% of the invention.
The present invention using air-introduced machine superfluous kinetic energy complete desulfurization and dedusting drop nitre be dehydrated quadrinomial job, equipment resistance≤
1000Pa~1500Pa.Dust-laden, sulfur-bearing, the waste liquid containing nitre of tower body lower part discharge enter slag chute, using coal or biomass through burning
The acid in natural alkali neutralization waste liquid generated afterwards.When the sulfur content of coal≤0.6%, it can accomplish zero run expense substantially, work as coal
Sulfur content > 0.6% when, need to drop in nitre tower in desulfurization and dedusting and add quick lime, guarantee pH value >=7 of water in slag chute.It is above-mentioned
Equipment can accomplish flue gas particles concentration < 30mg/m3、SO2≤50mg/m3、NOx< 50mg/m3~100mg/m3。
As environmental requirement flue gas emission particle concentration < 10mg/m3、SO2≤30mg/m3、NOx< 50mg/m3When, it be
Increase level-one " ultra-clean clarifier " behind dehydrating tower, the desulfurization and dedusting drop nitre agent being recycled is done using antiseptic corrosion inhibitor.
For the present invention for the huge coal-burning boiler of domestic usage amount at present, denitration principle is in 950 DEG C of furnace temperature combustions below
It burns in product, reduces to the greatest extent with NO2Based on oxynitrides (oxynitrides is generally with NOxIndicate, or be commonly called as nitre), and with
Based on NO, the Ca in coal is utilized2+、Mg2+Compound is as drop nitre desulfurizing agent, Ca2+、Mg2+Compound is mixed in clinker, surface
Product is big, and activity is big, and removal effect is good, is aided with anti-corrosion group dirt agent, more thoroughly removes the pollutants such as sulphur, the nitre in flue gas,
The content of flue gas emission after processed by the invention, dirt, sulphur and nitre is respectively no higher than 30mg/m3、50mg/m3And 100mg/m3, such as
It adds alkaline matter again to be for further processing, then the content of dirt, sulphur and nitre can be respectively down to not higher than 10mg/m3、35mg/m3With
50mg/m3；The simultaneous lubricating action risen to chain of the flocculent deposit that the present invention generates in slag chute, the abrasion for solving chain are asked
Topic, also overcomes the defect for causing chain powerlessly to drag using accumulation when mud guard due to dead mud；Water of the present invention can recycle
It utilizes, without outer draining；Chimney of the present invention is short shape.
The present invention has a characteristic that
1. deflector is arranged in tower body, guarantees that flue gas and the intracorporal desulfurization drop nitre water in dust removal of tower are sufficiently mixed, come out from water
Flue gas enters dehydrator through immersion homogenizing plate, water proof current divider, if you do not need to ultra-clean discharge, then flue gas enters chimney row
It puts, if flue gas enters ultra-clean clarifier after needing ultra-clean discharge, flue gas to come out from dehydrator, then through smoke stack emission.
2. blowdown valve is arranged in tower body lower part, periodically or continuously dust-laden, sulfur-bearing, the acid waste water containing nitre in tower are discharged
(it is arranged to blowdown sink on underground or ground), acid waste water enters the slag chute of boiler, acid waste water and slag chute through blowdown sink
Interior basic furnace pulp water sufficiently reacts.Utilize the Ca in coal2+Compound, Mg2+The CaO and MgO that compound generates after burning make
Nitre agent drops for desulfurization, so that the processing cost of desulfurization drop nitre is greatly lowered, as long as keeping pH value >=7 of slag chute water, so that it may
It keeps desulfurization drop nitre processing to run under nearly zero cost, as the sulfur content > 0.6% of coal, needs to drop in nitre tower in desulfurization and dedusting
Add suitable lime water (adding by lime doser).
3. the slag chute of boiler needs regular moisturizing, tap water is directly fed tower body, the acid of tower body lower part discharge by the present invention
Property waste water do the supplement water of slag chute, accomplish that a water is dual-purpose, to complete nearly zero water consume, guarantee waste water in slag chute not outlet, do
To wastewater zero discharge, slag chute needs how many supplement water, how much water just is supplemented to tower body.
4. the acid waste water that desulfurization is dropped after nitre dedusting is directly discharged into slag chute, need to solve two problems, first is that sulfur-bearing contains
The waste water of nitre has serious sour corrosion, second is that desulfurization drop nitre waste water generates inflexible mud, this is global problem.The present invention adopts
Solve the two problems with antiseptic corrosion inhibitor.It is remaining anti-in boiler blow-off waste water after launching antiseptic corrosion inhibitor into boiler
Very fine and close protective film is generated on the cleaning shoe that rotten antisludging agent will be hung on slag chute, chain and chain, prevents slag chute, chain
Corrode with cleaning shoe.If can directly be launched in slag chute in two times daily in boiler without dispensing antiseptic corrosion inhibitor,
Daily amount to adds 2.5kg.Antiseptic corrosion inhibitor can be with the spent acidic of calcium and magnesium ion and desulfurization and dedusting drop nitre tower discharge in water
Sulfur-containing compound in water, the reaction containing oxynitrides generate flocculent deposit, and this flocculent deposit not only alleviates slag chute, chain
With the abrasion of cleaning shoe (flocculent deposit plays lubricating action to chain), and desulfurization drop nitre waste water is prevented to generate inflexible mud, solution
The problem of the inflexible mud of generation of having determined.
5. desulfurization and dedusting drop nitre acid waste water in slag chute in clinker alkaline goods and materials and antiseptic corrosion inhibitor react,
Precipitating and part flocculent deposit are generated, goes to bake bricks as slag chute is discharged in clinker together to these precipitating continuitys, does not have to individually place
Waste is managed, to accomplish waste resource recovery utilization and zero-emission, and is guaranteed neat and tidy everywhere in boiler room.
Energy conservation of the invention and reduction of greenhouse gas discharge effect: ton furnace annual power consumption < 1440kwh, 0~720 ton of water consume.With
The common dedusting in the whole nation at present, desulfurization, drop nitre method are compared, and annual (calculating by 300 days) 68.4 ten thousand kwh of economize on electricity of ton furnace convert into
84 tons of standard coal, reduce CO2220 tons, water-saving 1440 tons of discharge.
The beneficial effects of the present invention are: compact-sized, compact, clean effect is good, applied widely, easy to operate,
Operating cost is low, low cost.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of boiler in the present invention, economizer, air preheater, first order deduster and air-introduced machine；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of the invention with ultra-clean clarifier.
Specific embodiment
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
A kind of YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, including boiler 1, economizer 2, air preheater 3, the
Primary dust removing device 4, air-introduced machine 5, tower body 6, water proof separator 71 and dehydrator 72, as depicted in figs. 1 and 2, specific structure is:
Boiler 1 is equipped with burner hearth 11, chimney 12, slag chute 13, chain 14 and scraper plate 15, and the smoke outlet at 11 top of burner hearth connects chimney
12, the slag-drip opening face slag chute 13 of 11 bottom of burner hearth, slag chute 13 is interior to be equipped with scraper plate 15 by chain 14；
The smoke outlet at 11 top of burner hearth is sequentially connected economizer 2, air preheater 3, first order deduster 4 and air-introduced machine 5；
Sink 61, deflector 62 and immersion homogenizing plate 63 are equipped in tower body 6,6 bottom of tower body is equipped with blowdown valve 64, air-introduced machine 5
Exhaust outlet protrude into the water inlet of face sink 61 after tower body 6, be equipped with deflector 62,61 water outlet faces of sink in sink 61
The water inlet of slag chute 13, alternatively, dirt discharge groove 16, the water inlet of 61 water outlet face dirt discharge grooves 16 of sink is arranged on ground or underground
Mouthful, the water inlet of the water outlet face slag chute 13 of dirt discharge groove 16, the exhaust outlet of sink 61 is successively through water proof separator 71 and dehydration
Device 72 connects chimney 12.
In the present embodiment: the air inducing air pressure of air-introduced machine 5 is in 4700Pa~5400MPa, and the tilt angle of deflector 62 is at 20 °
~40 °.
The present embodiment in use, successively implement as follows:
A. cool down dedusting: coal burning temperature is not higher than 950 DEG C, after coal burns in burner hearth 11 in control 1 burner hearth 11 of boiler
It generates the flue gas with oxysulfide, nitrogen oxides, dirt etc. and is discharged from 11 smoke outlet of burner hearth, flue gas is successively through 2 He of economizer
Air preheater 3 is cooled to not higher than 100 DEG C, enters air-introduced machine 5 after 4 dedusting of first order deduster after, and air-introduced machine 5 exports
Smoke temperature≤90 DEG C；
If first order deduster 4 uses bag filter, flue gas is successively cooled to not through economizer 2 and air preheater 3
Enter first order deduster 4 after higher than 160 DEG C to be cooled to again not higher than 100 DEG C；
B. drop nitre desulfurization: flue gas inputs tower body 6 with eddy flow state under the action of air-introduced machine 5, in 62 plate of deflector and immersion
Under the action of homogenizing plate 63, the water in flue gas and sink 61 is sufficiently mixed, NO of the water to absorb 50% or more dissolution2With 70% with
On sulfide need not be introduced into natural alkaline water (calcium, magnesium in coal in slag chute 13 in sink when coal sulfur content≤0.6%
The calcium oxide and magnesia generated after burning) or add quick lime, sink lower part regular discharge or overflow acid water and body refuse,
Complete the dedusting, desulfurization, drop nitre work of flue gas；As the sulfur content > 0.6% of coal, the natural alkaline water in slag chute 13 through removing
It is introduced into sink after dirt filtering as drop nitre desulfurizing agent to improve desulfurization degree and drop nitre rate；In the acid water and slag chute being discharged in tower
Alkaline water neutralize, if the water pH value < 7 in slag chute, it is de- to do supplement with YZ type lime doser feeding lime cream into tower
Sulphur agent, drop nitre agent, so that desulfurization degree is greater than 90%, drop nitre rate is successively passed through 70%~80% through drop nitre, desulfurization and the flue gas of dedusting
Atmosphere is discharged by chimney 12 after water proof separator 71 and dehydrator 72；
C. deslagging: the water in sink 61 flows into slag chute 13, investment in slag chute 13 after implementing drop nitre, desulfurization, dust removal process to flue gas
YZ-101 anti-corrosion group dirt agent, YZ-101 anti-corrosion group dirt agent possess a variety of prefilming agents, prevent slag chute and chain fouling and corrosion, YZ-
Calcium and magnesium ion in 101 antiseptic corrosion inhibitors and slag chute forms flocculent deposit, and flocculent deposit plays profit to the chain 14 for hanging scraper plate 15
Sliding effect, while flocculent deposit can prevent the waste water of desulfurization and dedusting drop nitre from forming inflexible mud.
It is world-famous puzzle that the waste water of desulfurization and dedusting drop nitre, which forms inflexible mud, will generally invest to build huge desulfurization drop glass gall
Slag is fished out with slag bucket in pond, and the present embodiment has been due to having abolished inflexible mud problem, without building pond, merely with the slag chute and slag of boiler
Chain in slot can complete slagging-off work.Clinker is used to bake bricks, and accomplishes waste zero-emission.Water in slag chute not outlet, does
To wastewater zero discharge.
When the present embodiment uses:
1. controlling combustion temperature in hearth≤900 DEG C of boiler, it is ensured that content≤300mg/m of nitre in flue gas3, and wherein
NO≤20%, thus the drop nitre method for reaching best, most saving；
2. the air inducing air pressure of air-introduced machine is in 4700Pa~5400kPa；
3. necessary 100 DEG C of the < of the flue-gas temperature for entering tower body, the energy conservation 5%~10% under the premise of guaranteeing that boiler does not condense, control
Air preheater exhaust gas temperature >=50 DEG C；
4. for needing the tower body of chimney stack (being highly greater than 30m), it is necessary to assure flue gas minimum temperature >=70 DEG C, if into
Short chimney (highly less than 30m), then can keep exhaust gas temperature >=35 DEG C；
5. the tilt angle of deflector is at 20 °~40 °；
6. lime doser need to be arranged when the sulfur content > 0.6% of coal；
7. pair boiler for needing ultra-clean discharge needs to install ultra-clean clarifier.
Embodiment 2
A kind of YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, including boiler 1, economizer 2, air preheater 3, the
Primary dust removing device 4, air-introduced machine 5, tower body 6, water proof separator 71 and dehydrator 72 further include ultra-clean clarifier 73, such as Fig. 3 institute
Show, specific structure is: ultra-clean clarifier 73 is connected between dehydrator 72 and chimney 12.Other structures are all same with embodiment 1.
The present embodiment in use, successively implement as follows:
A. cool down dedusting；B., nitre desulfurization is dropped；C. deslagging.When step b, the flue gas through drop nitre and desulfurization is successively separated through water proof
After device 71 and dehydrator 72, then atmosphere successively is discharged into through ultra-clean clarifier 73 and chimney 12.Other steps are all same with embodiment 1.
Claims (5)
1. a kind of YZ type vortex mixed desulfurization and dedusting drop nitre is dehydrated integrated tower, including boiler (1), boiler (1) is equipped with burner hearth
(11), chimney (12), slag chute (13), chain (14) and scraper plate (15), the smoke outlet at the top of burner hearth (11) connect chimney (12), furnace
The slag-drip opening face slag chute (13) of thorax (11) bottom, slag chute (13) is interior to be equipped with scraper plate (15) by chain (14), it is characterized in that: also
Including economizer (2), air preheater (3), first order deduster (4), air-introduced machine (5), tower body (6), water proof separator (71)
With dehydrator (72),
Smoke outlet at the top of burner hearth (11) is sequentially connected economizer (2), air preheater (3), first order deduster (4) and air inducing
Machine (5)；
Sink (61), deflector (62) and immersion homogenizing plate (63) are equipped in tower body (6), tower body (6) bottom is equipped with blowdown valve
(64), the exhaust outlet of air-introduced machine (5) protrudes into the water inlet of tower body (6) face sink (61) afterwards, is equipped with deflector in sink (61)
(62), the water inlet of (61) water outlet face slag chute (13) of sink, the exhaust outlet of sink (61) is successively through immersion homogenizing plate
(63), water proof separator (71) and dehydrator (72) connection chimney (12).
2. YZ type vortex mixed desulfurization and dedusting drop nitre as described in claim 1 is dehydrated integrated tower, it is characterized in that: air-introduced machine
(5) air inducing air pressure is in 4700Pa~5400Pa, and the tilt angle of deflector (62) is at 20 °~40 °.
3. YZ type vortex mixed desulfurization and dedusting drop nitre as claimed in claim 1 or 2 is dehydrated integrated tower, it is characterized in that: also wrapping
It includes ultra-clean clarifier (73), ultra-clean clarifier (73) is connected between dehydrator (72) and chimney (12).
4. the application method of YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower as claimed in claim 1 or 2, special
Sign is: successively implements as follows:
1. cool down dedusting: control boiler (1) burner hearth (11) interior coal burning temperature is not higher than 950 DEG C, and coal is in burner hearth (11)
Flue gas is generated after burning and is discharged from burner hearth (11) smoke outlet, and flue gas is successively cooled to through economizer (2) and air preheater (3)
Not higher than 100 DEG C, enter air-introduced machine (5) after first order deduster (4) dedusting after, air-introduced machine (5) exports smoke temperature≤90 DEG C；
2. dropping nitre desulfurization: flue gas inputs tower body (6) with eddy flow state under the action of air-introduced machine (5), in deflector (62) plate and
Under the action of immersion homogenizing plate (63), the water in flue gas and sink (61) is sufficiently mixed, and water is to absorb 50% or more dissolution
NO2Sulfide with 70% or more is not introduced into the natural alkaline water in slag chute (13), water in sink when coal sulfur content≤0.6%
Slot lower part regular discharge or overflow acid water and body refuse complete the dedusting, desulfurization, drop nitre work of flue gas；As the sulfur content > of coal
When 0.6%, the natural alkaline water in slag chute (13) is introduced into sink as drop nitre desulfurizing agent to improve desulfurization after dust removal and filtration
Rate and drop nitre rate；Alkaline water in the acid water and slag chute being discharged in tower neutralizes, if the water pH value < 7 in slag chute, lime
Doser feeding lime cream into tower does supplement desulfurizing agent, drop nitre agent so that desulfurization degree is greater than 90%, drop nitre rate 70%~80%,
It is successively discharged into greatly after water proof separator (71) and dehydrator (72) by chimney (12) through drop nitre, desulfurization and the flue gas of dedusting
Gas；
3. deslagging: the water in sink (61) flows into slag chute (13) after implementing drop nitre, desulfurization, dust removal process to flue gas, slag chute (13)
Interior investment anti-corrosion group dirt agent prevents slag chute and chain fouling and corrosion, and the calcium and magnesium ion in antiseptic corrosion inhibitor and slag chute, which is formed, wads a quilt with cotton
Shape precipitating, flocculent deposit plays lubricating action to the chain (14) for hanging scraper plate (15), while flocculent deposit prevents desulfurization and dedusting from dropping
The waste water of nitre forms inflexible mud.
5. the application method of YZ type vortex mixed desulfurization and dedusting drop nitre dehydration integrated tower as claimed in claim 3, feature
It is: successively implements as follows:
1. cool down dedusting: control boiler (1) burner hearth (11) interior coal burning temperature is not higher than 950 DEG C, and coal is in burner hearth (11)
Flue gas is generated after burning and is discharged from burner hearth (11) smoke outlet, and flue gas is successively cooled to through economizer (2) and air preheater (3)
Not higher than 100 DEG C, enter air-introduced machine (5) after first order deduster (4) dedusting after, air-introduced machine (5) exports smoke temperature≤90 DEG C；
2. dropping nitre desulfurization: flue gas inputs tower body (6) with eddy flow state under the action of air-introduced machine (5), in deflector (62) plate and
Under the action of immersion homogenizing plate (63), the water in flue gas and sink (61) is sufficiently mixed, and water is to absorb 50% or more dissolution
NO2Sulfide with 70% or more is not introduced into the natural alkaline water in slag chute (13), water in sink when coal sulfur content≤0.6%
Slot lower part regular discharge or overflow acid water and body refuse complete the dedusting, desulfurization, drop nitre work of flue gas；As the sulfur content > of coal
When 0.6%, the natural alkaline water in slag chute (13) is introduced into sink as drop nitre desulfurizing agent to improve desulfurization after dust removal and filtration
Rate and drop nitre rate；Alkaline water in the acid water and slag chute being discharged in tower neutralizes, if the water pH value < 7 in slag chute, lime
Doser feeding lime cream into tower does supplement desulfurizing agent, drop nitre agent so that desulfurization degree is greater than 90%, drop nitre rate 70%~80%,
Nitre, desulfurization and the flue gas of dedusting are dropped successively after water proof separator (71) and dehydrator (72), then successively through ultra-clean clarifier
(73) and chimney (12) is discharged into atmosphere；
3. deslagging: the water in sink (61) flows into slag chute (13) after implementing drop nitre, desulfurization, dust removal process to flue gas, slag chute (13)
Interior investment anti-corrosion group dirt agent prevents slag chute and chain fouling and corrosion, and the calcium and magnesium ion in antiseptic corrosion inhibitor and slag chute, which is formed, wads a quilt with cotton
Shape precipitating, flocculent deposit plays lubricating action to the chain (14) for hanging scraper plate (15), while flocculent deposit prevents desulfurization and dedusting from dropping
The waste water of nitre forms inflexible mud.
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