CN208943815U - A kind of desulphurization plant reducing ammonia and doctor solution escape - Google Patents
A kind of desulphurization plant reducing ammonia and doctor solution escape Download PDFInfo
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- CN208943815U CN208943815U CN201821153325.3U CN201821153325U CN208943815U CN 208943815 U CN208943815 U CN 208943815U CN 201821153325 U CN201821153325 U CN 201821153325U CN 208943815 U CN208943815 U CN 208943815U
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- ammonia
- pump
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- desulfurizing tower
- water tank
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 253
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 119
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 76
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 71
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 70
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 54
- 230000023556 desulfurization Effects 0.000 claims abstract description 53
- 239000003546 flue gas Substances 0.000 claims abstract description 39
- 239000010440 gypsum Substances 0.000 claims abstract description 37
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 37
- 238000011069 regeneration method Methods 0.000 claims abstract description 37
- 230000008929 regeneration Effects 0.000 claims abstract description 36
- 239000000706 filtrate Substances 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000012065 filter cake Substances 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 238000005273 aeration Methods 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 45
- 239000007789 gas Substances 0.000 claims description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 20
- 239000000908 ammonium hydroxide Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 238000005201 scrubbing Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 9
- 239000011593 sulfur Substances 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 4
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract description 8
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 14
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 235000011130 ammonium sulphate Nutrition 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 5
- 229910052925 anhydrite Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000012719 wet electrostatic precipitator Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 206010019133 Hangover Diseases 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- -1 that is Chemical compound 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- ZETCGWYACBNPIH-UHFFFAOYSA-N azane;sulfurous acid Chemical compound N.OS(O)=O ZETCGWYACBNPIH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009719 regenerative response Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A kind of desulphurization plant reducing ammonia and doctor solution escape, mixer (1) connects mixing pump (2) and is connected with regeneration ammonia distiller (3), slurry delivery pump (4) is connected with gypsum filter (7), filter cake is delivered to gypsum warehouse (9) by belt feeder (8), filtrate imports filtrate storage tank (6), filtrate delivery pump (5) is connected with ammonia water tank (12), regeneration ammonia distiller (3) is connected with Jet absorber (11), ammonia water tank (12) connection inhales ammonia pump (10) and is connected with Jet absorber (11), ammonia water tank (12) connection aqua ammonia pump (13) is connected with desulfurizing tower (15), desulfurizing tower (15) connection doctor solution circulating pump (14) is connected with desulfurizing tower (15) and mixer (1)；The utility model utilizes the NH of out of stock escape3Absorb SO in flue gas2Isolate high-quality gypsum and regeneration NH3, realize that denitration and desulfurization organically combine.
Description
Technical field
The utility model belongs to coal-fired flue gas denitration technical field of desulfurization, more particularly to reducing in a kind of ammonia denitration desulfurization
The desulphurization plant of ammonia and doctor solution escape.
Background technique
The coal-fired flue-gas of glass and other coal-burning utilities is forced to use denitration sulfur removal technology at present, to reduce NO in flue gasX
And SO2Discharge.Its process flow is: flue gas first using ammonia as raw material under low-temperature catalyzed effect by NOXIt is reduced into N2(nitrogen
Gas), Dual alkali, magnesium processes or calcium method desulfurization are reused, SO is reduced2The flue gas of concentration of emission, the discharge of tail gas end uses wet electricity
Demister is adsorbed and removed the doctor solution droplet of flue gas entrainment.The application of denitration desulfurization demisting technological means so, the row of can guarantee
NO in the flue gas putX、SO2With the concentration of particulate matter, the discharge standard of meet the requirement of environmental protection.
But the above-mentioned prior art in use also in the prevalence of four aspect the problem of (with double alkali method desulfurizing
For): first is that there is the NH3 not reacted when the use of ammonia being that raw material carries out low-temperature catalyzed denitration and enter desulfurizing tower participation desulfurization
And there are problems that escaping with flue gas, extended in particular with catalyst using the time, catalyst gradually pollutes, and catalytic efficiency is gradually
It reduces, the escaping of ammonia phenomenon is all the more serious；Second is that there are doctor solution Na for double alkali method desulfurizing2SO4Theoretically with practice on cannot be by stone
The regenerated awkward situation of grey CaO, both can not form gypsum CaSO4, desulfurizing agent NaOH will not be regenerated, Dual alkali is maintained and continues to take off
Unique method of sulphur is exactly to be forced to add soda ash or caustic soda, implements single alkali desulfurization truly, this passive means is not
Higher desulphurization cost is only added, moreover, the Na with the addition of single alkali, in desulphurization circulating liquid2SO4Concentration is also constantly increasing
Add, can only finally be forced to discharge, seriously polluted underground water, this has become double alkali method desulfurizing industry undisputable fact；Third is that
The wet electrostatic precipitator that tail gas end uses cannot effectively be adsorbed and removed superfine doctor solution droplet, these are micro- with flue gas entrainment discharge
Thin doctor solution, which enters, is air-dried dehydration, to generate " blue smoke " trailing phenomenon, actually PM2.5 causes haze phenomenon to this phenomenon
Arch-criminal；Fourth is that the NH that surplus is escaped when denitration3It is the gas of highly volatile, it is easy to take out of and escape with flue gas, cause to be discharged
Flue gas ammonia taste it is denseer, get into the air to form PM2.5 pollution sources.
Equally, also at least there is the escaping of ammonia etc. using the low-temperature catalyzed denitration series connection calcium method of ammonia, magnesium processes sulfur removal technology
The problem of aspect.
It is clear that solve in process of wet desulphurization to the recycling of escape ammonia, will be in doctor solution using desulfurizing agent appropriate
Sulfate is separated, prevents flue gas entrainment doctor solution after doctor solution discharges the underground water pollution to be formed, reduces wet electrostatic precipitator
Concentration realizes that desulfurization regeneration recycling is to reduce the developing direction of PM2.5 phenomenon, and truly flue gas row up to standard
The basic guarantee put.
Summary of the invention
The purpose of the utility model is to provide the equipment of a kind of reduction ammonia and doctor solution escape, out of stock are escaped using low-temperature catalyzed
The ammonia of ease is desulfurizing agent, meet denitration desulfurization it is double it is up to standard, realize that desulfurization regeneration circulation, desulfurization product effectively converts and give up
Water zero discharge simultaneously, escape caused by " blue smoke " to be formed hangover PM2.5 pairs by the ammonia and doctor solution for reducing flue gas emission entrainment
The pollution of atmospheric environment.
The utility model realizes that technological principle based on above-mentioned purpose is:
The NO that denitration unit ammonia will make in flue gas through catalytic denitrationXIt is reduced into N2While the NH that escapes3Into desulfurization list
Member is desulfurized liquid and absorbs to form ammonium hydroxide (NH4OH), SO in flue gas is absorbed through desulfurizing tower2Obtain ammonium sulfite (NH4)2SO3, (NH4)2SO3Unstable react in gas 02 is converted to ammonium sulfate (NH4)2SO4, reach flue gas desulfurization purpose；With pulverized limestone (CaO) or
Person's white lime [Ca (OH)2] and doctor solution (NH4)2SO4Regeneration ammonia still process reaction occurs, obtains gypsum deposition and NH3, this NH3It is taken off
Sulphur liquid absorbs becomes ammonium hydroxide return desulfurizing tower repetition desulfurization again, and gypsum filtered fluid returns to desulfurization unit and is recycled, and realizes desulfurization
Zero discharge；Subtle doctor solution is inevitably carried secretly in the flue gas of desulfurizing tower discharge, is sent aeration tower to do classification with pure water and is washed
Gas disposal, using the feature that doctor solution is soluble easily in water, by the droplet for carrying escape in flue gas secretly be converted to or close to pure water at
Point, it fundamentally solves because flue gas entrainment droplet pollutes " blue smoke " PM2.5 caused by atmospheric environment.Aeration tower cleaning solution is
Low concentration doctor solution containing a small amount of ammonium hydroxide keeps the watering balance of desulphurization system for making up doctor solution evaporation missing.
The utility model technological principle reaction equation indicates as follows:
Ammonia desulfurization principle: NH3+H2O=NH4OH
2 NH4OH+SO2=(NH4)2SO3+H2O
2(NH4)2SO3+ O2=2 (NH4)2SO4
Desulfurization regeneration reaction: (NH4)2SO4+ CaO=CaSO4↓+2NH3↑+H2O
(NH4)2SO4+Ca(OH)2=CaSO4↓+2NH3↑+2H2O
The utility model reaches above-mentioned purpose and adopts the following technical scheme that, includes the following steps:
1) desulfurization operations: using the ammonia that ammonium hydroxide and denitration are superfluous or escape as desulfurizing agent, ammonium hydroxide directly uses ammonia
Water pump sprays into desulfurizing tower by desulfurizing tower middle part or upper nozzle and flue gas implements desulfuration operations, according to 2NH4OH+SO2=
(NH4)2SO3+H2O is operated；The flue gas containing ammonia after denitration send desulfurizing tower and doctor solution that absorbing reaction occurs, and makes ammonia
With the hydration in doctor solution at ammonium hydroxide, that is, NH3+H2O=NH4OH, and complete and SO in flue gas2Desulphurization reaction generate sulfurous acid
Ammonium；
2) oxidation operation: using the excess air O in flue gas2For oxidant, the Asia that step 1) is generated in desulfurizing tower
Ammonium sulfate is aoxidized, and generates ammonium sulfate doctor solution or liquid is completed in referred to as desulfurization, that is, 2 (NH4)2SO3+ O2=2 (NH4)2SO4；Wherein, the doctor solution circulating pump of desulfurization tower bottom connection is connected with desulfurizing tower top atomizer, and tower bottom doctor solution is squeezed into
Desulfurizing tower implements circulation enough, and the ammonium sulfite generated in desulfurizing tower to step 1) aoxidizes, and it is de- to undertake generation ammonium sulfate
The main task of sulphur liquid；
3) desulfurization regeneration operates: implementing important desulfurization regeneration reaction, in a mixer, with quick lime or raw stone
Ashes is as regenerative agent, and the ammonium sulfate obtained with step 2) is by (NH4)2SO4+ CaO=CaSO4↓+NH3↑+H2O occurs anti-
It answers, forms the slurry of calcium sulfate and ammonium hydroxide；
4) ammonia still process operates: mixer slurry being pumped into regeneration ammonia distiller, using the exothermic process of regenerative response, auxiliary is necessary
Steam thermal energy, the ammonia in regenerated liquid is evaporated from the slurry (synonymous with slurries) of ammonium hydroxide and gypsum, that is, (NH4)2SO4+ CaO=CaSO4↓+NH3↑+H2O；
5) separation gypsum operation: step 4) slurry is pressed by filter by slurry delivery pump, filter cake is that gypsum passes through skin
Band machine is delivered to gypsum warehouse, and filtrate is that process water collects in filtered fluid storage tank；
6) ammonia absorption operation: the ammonia that step 4) is obtained imports Jet absorber, and the process water obtained with step 5) is inhaled
It receives ammonia and forms ammonium hydroxide；
7) circulation desulfurization operates: step 6) being obtained ammonium hydroxide and realizes circulation desulfurization according to step 1) operation；Maintain desulfurizing tower
The population equilibrium of ammonia consumption, it may be assumed that keep the total amount of the low ammonia of tail gas and low concentration doctor solution escape ammonia and denitration surplus or escape
The overall balance of the ammonia of ease；
8) scrubbing operations: gas washing is imported containing ammonia and the desulfurization fume of doctor solution fine mist by what is be discharged at the top of desulfurizing tower
Tower assists scrubbing loop pump gas washing tower bottom low concentration circulation fluid by pure water pump by the pure water hydro-peening flue gas in pure water tank
The droplet for carrying escape in flue gas secretly is converted to or close to pure water using the feature that doctor solution is soluble easily in water by hydro-peening repeatedly
Ingredient, until aeration tower exhaust emissions obtains ideal indicator；
9) desulfurization completes liquid and returns to operation: desulfurization tower bottom doctor solution is controlled by section door implements circulation desulfurization, and circulation is de-
After the completion of sulphur liquid, another section door is controlled by doctor solution circulating pump and is pumped into mixer implementation steps 3) operation；
10) gas washing liquid reclaimer operation: gas washing tower bottom gas washing liquid is controlled by section door implements circulation gas washing, recycles gas washing liquid
After the completion, it controls another section door and ammonia water tank is pumped into for step 1) operation by scrubbing loop, while making up the deficiency of system water.
According to principles above, the utility model provides the desulphurization plant for realizing the object of the invention:
A kind of desulphurization plant reducing ammonia and doctor solution escape by lime regeneration ammonia steaming device, ammonia device for ejecting and absorbing, takes off
Four unit compositions of sulphur device and tail gas air-washer, specifically, including mixer, mixing pump, regeneration ammonia distiller, slurry pipeline transport
Pump, inhales ammonia pump, Jet absorber, ammonia water tank, ammonia at filtrate delivery pump, filtrate storage tank, gypsum filter, belt feeder, gypsum warehouse
Water pump, doctor solution circulating pump, desulfurizing tower, scrubbing loop pump, aeration tower, pure water pump and pure water tank；Mixer is connected by bottom
Mixing pump with regeneration ammonia distiller feed inlet be connected and by mixer complete slurry pipeline transport to regeneration ammonia distiller in, regeneration ammonia distiller
The slurry delivery pump of bottom connection is connected with filtering machine inlet and will regenerate in the slurry indentation filter that ammonia distiller is completed, filter
Cake is delivered to gypsum warehouse by belt feeder for gypsum, and filtrate imports filtered fluid storage tank, the filtrate of filtered fluid reservoir bottom connection
Delivery pump is connected with ammonia water tank feed inlet and filtered fluid storage tank completion liquid is delivered to ammonia water tank, regeneration ammonia distiller top exit with
Jet absorber gas access, which is connected and will regenerate the ammonia that ammonia distiller steams, is delivered to Jet absorber, the connection of ammonium hydroxide pot bottom
Ammonia pump is inhaled to be connected with Jet absorber nozzle and by the liquid absorption ammonia of ammonia water tank, the aqua ammonia pump of ammonium hydroxide pot bottom connection with take off
Sulphur tower nozzle is connected and by the sulfur-containing smoke gas of the ammonia spray desulfurizing tower in ammonia water tank, and desulfurization tower bottom connects doctor solution circulating pump
It is connected respectively with desulfurizing tower nozzle and mixer liquid inlet by section door, and respectively that the desulphurization circulating liquid of desulfurization tower bottom is defeated
It send to desulfurizing tower desulfurization and liquid is completed in the desulfurization of desulfurization tower bottom is delivered to mixer to mix with CaO, desulfurizing tower top tail
Gas outlet is connected with aeration tower lower entrances, and the pure water pump that pure water pot bottom connects is connected with aeration tower upper nozzle and by pure water
Spray washing desulfurizing tower tail gas, gas washing tower bottom connection scrubbing loop pump by section door respectively with aeration tower top or middle part
And ammonia water tank is connected, and aeration tower circulation fluid is delivered to aeration tower middle part or top respectively and aeration tower is completed liquid
It is transmitted back to ammonia water tank, regeneration ammonia distiller, which is connected with steam pipework and auxiliary ammonia still process steam is directly or indirectly delivered to regeneration, to be steamed
Ammonia device, desulfurizing tower lower part, which is connected with flue gas pipeline containing ammonia after denitration and flue gas after denitration is delivered to desulfurizing tower, carries out desulfurization.
Further, the aqua ammonia pump of ammonium hydroxide pot bottom connection is connected with nozzle in the middle part of desulfurizing tower, and desulfurization tower bottom connects
The doctor solution circulating pump connect is connected with desulfurizing tower upper nozzle, and formation spray height is poor, the former stresses to absorb SO2 using ammonium hydroxide
SO2 in flue gas is converted to sulphite and enters liquid by the characteristics of generation ammonium sulfite is swift in response, and the latter then lays particular emphasis on
Strengthen conversion of the ammonium sulfite to ammonium sulfate by increasing the excess oxygen solid/liquid/gas reactions time in ammonium sulfite and flue gas；
Further, the scrubbing loop pump of gas washing tower bottom connection is connected with nozzle in the middle part of aeration tower, and pure water tank bottom
The pure water pump of portion's connection is connected with aeration tower upper nozzle, and formation spray height is poor, the former stresses primary gas washing, and the latter stresses
Ultimate gas washing is more advantageous to the purification discharge of tail gas；
Further, in order to improve gas washing effect, several packing layers can be set in aeration tower, utilize filler layer surface shape
At moisture film enhancing to the solution absorption of doctor solution in flue gas.
Further, demister, the washing water carried secretly in recovered flue gas can be arranged in the aeration tower at an upper portion thereof；
Further, aeration tower outlet can also add wet electrostatic precipitator again and further remove washing of carrying secretly in tail gas
Air water mist, to reduce the moisture of smoke evacuation；
The utility model has the beneficial effects that being realized using the sulfur removal technology and equipment that reduce ammonia and doctor solution escape
The disadvantage of denitration unit ammonia surplus or the escaping of ammonia is transformed into the advantage of desulfurization unit by the combination of denitration and desulfurization；It is logical
It crosses lime regenerative sulfur binding liquid to obtain outside ammonifying again and the splendid gypsum of performance, realizes waste residue and wastewater zero discharge；Ensureing cigarette
Under the premise of gas qualified discharge, is recycled using doctor solution feature soluble easily in water by aeration tower and the ammonia largely escaped is utilized
And doctor solution fine mist, make the tail gas of discharge close to the ingredient of pure water, greatly reduces caused by " blue smoke " hangover
Pollution of the PM2.5 to atmospheric environment.Meanwhile the utility model is based on existing denitration desulfurization equipment, to the prior art
Progress Promotion Transformation need to only install the utility model device additional and implement the utility model technique, this is to formation China's mainstream desulfurization
Technique has important technical support effect.
Detailed description of the invention
With reference to the accompanying drawings and embodiments, the utility model is further described.
Fig. 1 is a kind of desulphurization plant composition figure for reducing ammonia and doctor solution escape of the utility model
In figure, 1- mixer, 2- mixing pump, 3- regeneration ammonia distiller, 4- slurry delivery pump, 5- filtrate delivery pump, 6- filtering
Liquid storage tank, 7- gypsum filter, 8- belt feeder, 9- gypsum warehouse, 10- inhale ammonia pump, 11- Jet absorber, 12- ammonia water tank, 13-
Aqua ammonia pump, 14- doctor solution circulating pump, 15- desulfurizing tower, 16- scrubbing loop pump, 17- aeration tower, 18- pure water pump, 19- pure water tank
Specific embodiment
In order to which the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to the accompanying drawing and implement
Example is described in further details the utility model.It should be appreciated that embodiment described herein is only used for explaining that this is practical new
Type is not intended to limit the utility model.
Embodiment 1: a kind of desulphurization plant reducing ammonia and doctor solution escape, as seen from Figure 1, comprising: mixer 1, mixing
Pump 2, regeneration ammonia distiller 3, slurry delivery pump 4, filtrate delivery pump 5, filtrate storage tank 6, gypsum filter 7, belt feeder 8, gypsum storage
Ammonia pump 10, Jet absorber 11, ammonia water tank 12, aqua ammonia pump 13, doctor solution circulating pump 14, desulfurizing tower 15, scrubbing loop are inhaled in storehouse 9
Pump 16, aeration tower 17, pure water pump 18 and pure water tank 19；The mixing pump 2 and regeneration ammonia distiller 3 that mixer 1 is connected by bottom into
Material mouth is connected and the mixed slurry that mixer 1 completes gypsum and ammonium hydroxide is delivered in regeneration ammonia distiller 3, regenerates 3 bottom of ammonia distiller
The slurry delivery pump 4 of portion's connection is connected with 7 feed inlet of filter and by the Gypsum slurry pressure after the ammonia still process completed of regeneration ammonia distiller 3
Enter in filter 7, filter cake is delivered to gypsum warehouse 9 by belt feeder 8 for gypsum, and filtrate imports filtered fluid storage tank as process water
6,6 bottom of filtered fluid storage tank connection filtrate delivery pump 5 be connected with 12 feed inlet of ammonia water tank and by filtered fluid storage tank 6 completion liquid it is defeated
It send to ammonia water tank 12, regenerates 3 top exit of ammonia distiller and be connected with 11 gas access of Jet absorber and steam regeneration ammonia distiller 3
Ammonia be delivered to Jet absorber 11, the suction ammonia pump 10 of 12 bottom of ammonia water tank connection is connected with 11 nozzle of Jet absorber and by ammonia
The aqua ammonia pump 13 of the liquid absorption ammonia of water pot 12, the connection of 12 bottom of ammonia water tank is connected with 15 middle part of desulfurizing tower or upper nozzle
And by the sulfur-containing smoke gas of the ammonia spray desulfurizing tower 15 in ammonia water tank 12,15 bottom of desulfurizing tower connection doctor solution circulating pump 14 passes through
Section door is connected with 15 upper nozzle of desulfurizing tower and 1 liquid inlet of mixer respectively, and respectively follows the desulfurization of 15 bottom of desulfurizing tower
Ring liquid is delivered to 15 desulfurization of desulfurizing tower and the desulfurization completion liquid of 15 bottom of desulfurizing tower is delivered to mixer 1 and mixes with lime
Close, 15 top offgas outlet of desulfurizing tower is connected with 17 lower entrances of aeration tower, the pure water pump 18 that 19 bottom of pure water tank connects with wash
17 upper nozzle of gas tower is connected and by 15 tail gas of pure water jet cleaning desulfurizing tower, and the scrubbing loop of 17 bottom of aeration tower connection pumps 16
It is connected respectively with 17 middle part of aeration tower or top and ammonia water tank 12 by section door, and respectively conveys 17 circulation fluid of aeration tower
It is transmitted back to ammonia water tank 12 to 17 middle part of aeration tower or top and by the completion liquid of aeration tower 17, regenerates ammonia distiller 3 and steam pipe
Road is connected and auxiliary ammonia still process steam is directly or indirectly delivered to regeneration ammonia distiller 3, contains ammonia behind 15 lower part of desulfurizing tower and denitration
Flue gas pipeline, which is connected and flue gas after denitration is delivered to desulfurizing tower 15, carries out desulfurization.
Embodiment 2: a kind of desulphurization plant reducing ammonia and doctor solution escape, as seen from Figure 1, comprising: mixer 1, mixing
Pump 2, regeneration ammonia distiller 3, slurry delivery pump 4, filtrate delivery pump 5, filtrate storage tank 6, gypsum filter 7, belt feeder 8, gypsum storage
Ammonia pump 10, Jet absorber 11, ammonia water tank 12, aqua ammonia pump 13, doctor solution circulating pump 14, desulfurizing tower 15, scrubbing loop are inhaled in storehouse 9
Pump 16, aeration tower 17, pure water pump 18 and pure water tank 19；The mixing pump 2 and regeneration ammonia distiller 3 that mixer 1 is connected by bottom into
Material mouth is connected and the mixed slurry that mixer 1 completes gypsum and ammonium hydroxide is delivered in regeneration ammonia distiller 3, regenerates 3 bottom of ammonia distiller
The slurry delivery pump 4 of portion's connection is connected with 7 feed inlet of filter and by the Gypsum slurry pressure after the ammonia still process completed of regeneration ammonia distiller 3
Enter in filter 7, filter cake is delivered to gypsum warehouse 9 by belt feeder 8 for gypsum, and filtrate imports filtered fluid storage tank as process water
6,6 bottom of filtered fluid storage tank connection filtrate delivery pump 5 be connected with 12 feed inlet of ammonia water tank and by filtered fluid storage tank 6 completion liquid it is defeated
It send to ammonia water tank 12, regenerates 3 top exit of ammonia distiller and be connected with 11 gas access of Jet absorber and steam regeneration ammonia distiller 3
Ammonia be delivered to Jet absorber 11, the suction ammonia pump 10 of 12 bottom of ammonia water tank connection is connected with 11 nozzle of Jet absorber and by ammonia
The aqua ammonia pump 13 of the liquid absorption ammonia of water pot 12, the connection of 12 bottom of ammonia water tank is connected and by ammonium hydroxide with 15 middle part nozzle of desulfurizing tower
The sulfur-containing smoke gas of ammonia spray desulfurizing tower 15 in tank 12,15 bottom of desulfurizing tower connect doctor solution circulating pump 14 and are distinguished by section door
It is connected with 15 upper nozzle of desulfurizing tower and 1 liquid inlet of mixer, and respectively conveys the desulphurization circulating liquid of 15 bottom of desulfurizing tower
Completing liquid to 15 desulfurization of desulfurizing tower and by the desulfurization of 15 bottom of desulfurizing tower, (doctor solution completes liquid or referred to as ammonium sulfate is completed
Liquid) it is delivered to mixer 1 and is mixed with lime, 15 top offgas outlet of desulfurizing tower is connected with 17 lower entrances of aeration tower, pure
The pure water pump 18 of 19 bottom of water pot connection is connected with 17 upper nozzle of aeration tower and by 15 tail gas of pure water jet cleaning desulfurizing tower, washes
The scrubbing loop pump 16 of 17 bottom of gas tower connection is connected with 17 middle part of aeration tower and ammonia water tank 12 respectively by section door, and respectively
17 circulation fluid of aeration tower is delivered to 17 middle part of aeration tower and the completion liquid of aeration tower 17 is transmitted back to ammonia water tank 12, regenerates ammonia still process
Device 3 be connected with steam pipework and will auxiliary ammonia still process steam directly or indirectly be delivered to regeneration ammonia distiller 3,15 lower part of desulfurizing tower with
Flue gas pipeline containing ammonia, which is connected and flue gas after denitration is delivered to desulfurizing tower 15, after denitration carries out desulfurization.
The foregoing is merely the better embodiments of the utility model, not are used to limit the implementation model of the utility model
It encloses；If not departing from the spirit and scope of the utility model, the utility model is modified or replaced equivalently, should all be covered
Among the protection scope of the utility model claims book.
Claims (2)
1. a kind of desulphurization plant for reducing ammonia and doctor solution escape, comprising: mixer (1), mixing pump (2), regeneration ammonia distiller
(3), slurry delivery pump (4), filtrate delivery pump (5), filtrate storage tank (6), gypsum filter (7), belt feeder (8), gypsum warehouse
(9), ammonia pump (10), Jet absorber (11), ammonia water tank (12), aqua ammonia pump (13), doctor solution circulating pump (14), desulfurizing tower are inhaled
(15), scrubbing loop pump (16), aeration tower (17), pure water pump (18) and pure water tank (19)；Mixer (1) is connected by bottom
Mixing pump (2) is connected with regeneration ammonia distiller (3) feed inlet and is delivered to the mixed slurry that mixer (1) completes gypsum and ammonium hydroxide
It regenerates in ammonia distiller (3), the slurry delivery pump (4) of regeneration ammonia distiller (3) bottom connection is connected with gypsum filter (7) feed inlet
And will regenerate in Gypsum slurry indentation gypsum filter (7) after the ammonia still process that ammonia distiller (3) are completed, filter cake is that gypsum passes through belt
Machine (8) is delivered to gypsum warehouse (9), and filtrate imports filtrate storage tank (6) as process water, the filter of filtrate storage tank (6) bottom connection
Liquid delivery pump (5) is connected with ammonia water tank (12) feed inlet and is delivered to filtrate storage tank (6) completion liquid ammonia water tank (12), and regeneration is steamed
Ammonia device (3) top exit is connected with Jet absorber (11) gas access and is delivered to spray for the ammonia that ammonia distiller (3) steam is regenerated
It penetrates absorber (11), the suction ammonia pump (10) of ammonia water tank (12) bottom connection is connected and by ammonia water tank with Jet absorber (11) nozzle
(12) liquid absorption ammonia, the aqua ammonia pump (13) of ammonia water tank (12) bottom connection and desulfurizing tower (15) middle part or upper nozzle
It is connected and by the sulfur-containing smoke gas of the ammonia spray desulfurizing tower (15) in ammonia water tank (12), desulfurizing tower (15) bottom connection doctor solution follows
Ring pump (14) is connected with desulfurizing tower (15) upper nozzle and mixer (1) liquid inlet respectively by section door, and respectively by desulfurization
The desulphurization circulating liquid of tower (15) bottom is delivered to desulfurizing tower (15) desulfurization and that liquid is completed in the desulfurization of desulfurizing tower (15) bottom is defeated
It send to mixer (1) and is mixed with lime, offgas outlet is connected with aeration tower (17) lower entrances at the top of desulfurizing tower (15), pure
The pure water pump (18) of water pot (19) bottom connection is connected and by pure water jet cleaning desulfurizing tower with aeration tower (17) upper nozzle
(15) tail gas, aeration tower (17) bottom connection scrubbing loop pump (16) by section door respectively with aeration tower (17) in the middle part of or on
Portion and ammonia water tank (12) are connected, and respectively by aeration tower (17) circulation fluid be delivered in the middle part of aeration tower (17) or top and
Aeration tower (17) completion liquid is transmitted back to ammonia water tank (12), regeneration ammonia distiller (3) is connected with steam pipework and steams auxiliary ammonia still process
Vapour is directly or indirectly delivered to regeneration ammonia distiller (3), desulfurizing tower (15) lower part be connected with flue gas pipeline containing ammonia after denitration and incite somebody to action
Flue gas is delivered to desulfurizing tower (15) and carries out desulfurization after denitration.
2. desulphurization plant according to claim 1, it is characterised in that: ammonia water tank (12) bottom connection aqua ammonia pump (13) with
Nozzle is connected and by the sulfur-containing smoke gas of the ammonia spray desulfurizing tower (15) in ammonia water tank (12), desulfurizing tower in the middle part of desulfurizing tower (15)
(15) bottom connection doctor solution circulating pump (14) is entered with desulfurizing tower (15) upper nozzle and mixer (1) liquid respectively by section door
Mouthful it is connected, and the desulphurization circulating liquid of desulfurizing tower (15) bottom is delivered to desulfurizing tower (15) desulfurization respectively and by desulfurizing tower (15)
The desulfurization completion liquid of bottom is delivered to mixer (1) and is mixed with lime, offgas outlet and aeration tower at the top of desulfurizing tower (15)
(17) lower entrances are connected, and the pure water pump (18) of pure water tank (19) bottom connection is connected with aeration tower (17) upper nozzle and will be pure
Water injection washing desulphurization tower (15) tail gas, aeration tower (17) bottom connection scrubbing loop pump (16) by section door respectively with gas washing
In the middle part of tower (17) and ammonia water tank (12) is connected, and aeration tower (17) circulation fluid is delivered in the middle part of aeration tower (17) respectively and
Aeration tower (17) completion liquid is transmitted back to ammonia water tank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153325.3U CN208943815U (en) | 2018-07-14 | 2018-07-14 | A kind of desulphurization plant reducing ammonia and doctor solution escape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153325.3U CN208943815U (en) | 2018-07-14 | 2018-07-14 | A kind of desulphurization plant reducing ammonia and doctor solution escape |
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| Publication Number | Publication Date |
|---|---|
| CN208943815U true CN208943815U (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821153325.3U Withdrawn - After Issue CN208943815U (en) | 2018-07-14 | 2018-07-14 | A kind of desulphurization plant reducing ammonia and doctor solution escape |
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| Country | Link |
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| CN (1) | CN208943815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686477A (en) * | 2018-07-14 | 2018-10-23 | 邢台润天环保科技有限公司 | A kind of sulfur removal technology and equipment reducing ammonia and doctor solution escape |
| CN113262625A (en) * | 2021-05-11 | 2021-08-17 | 江苏新世纪江南环保股份有限公司 | Ammonia desulphurization and decarburization integrated device and method |
-
2018
- 2018-07-14 CN CN201821153325.3U patent/CN208943815U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686477A (en) * | 2018-07-14 | 2018-10-23 | 邢台润天环保科技有限公司 | A kind of sulfur removal technology and equipment reducing ammonia and doctor solution escape |
| CN108686477B (en) * | 2018-07-14 | 2023-12-01 | 邢台润天环保科技有限公司 | Desulfurization process and equipment for reducing ammonia and desulfurizing liquid escape |
| CN113262625A (en) * | 2021-05-11 | 2021-08-17 | 江苏新世纪江南环保股份有限公司 | Ammonia desulphurization and decarburization integrated device and method |
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