CN106110866A - A kind of flue gas desulphurization system - Google Patents
A kind of flue gas desulphurization system Download PDFInfo
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- CN106110866A CN106110866A CN201610643747.8A CN201610643747A CN106110866A CN 106110866 A CN106110866 A CN 106110866A CN 201610643747 A CN201610643747 A CN 201610643747A CN 106110866 A CN106110866 A CN 106110866A
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
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- 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
- B01D53/73—After-treatment of removed components
-
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- Treating Waste Gases (AREA)
Abstract
The open a kind of flue gas desulphurization system of the present invention, including sintering desulfuration tower and pelletizing desulfurizing tower, the air intake vent of sintering desulfuration tower and pelletizing desulfurizing tower connects sintering exhaust gases passes and pelletizing exhaust gases passes respectively, the spray system of sintering desulfuration tower and pelletizing desulfurizing tower respectively with sintering limestone slurry liquid supply system, pelletizing limestone slurry liquid supply system connects, lime stone pulping system separate two-way respectively with sintering limestone slurry liquid supply system, pelletizing limestone slurry liquid supply system is connected as it and provides lime stone slurry, sintering limestone slurry liquid supply system, the gypsum slurries that pelletizing limestone slurry liquid supply system obtains in desulfurization processes is delivered to gypsum dehydration system.The present invention uses wet method limestone-gypsum method that flue gas is carried out desulfurization, the desulphurization system of sintered production line and pellet production line is combined, has simplified equipment, desulfuration efficiency is high, reduces exhaust emission, sorbent consumption low cost, greatly reduce production cost, improve production economy benefit.
Description
Technical field
The present invention relates to the cleaning and desulfurization technical field of flue gas, particularly relate to a kind of flue gas desulphurization system.
Background technology
Flue gas desulfurization refers to remove oxysulfide, the principles of chemistry: the SO in flue gas from flue gas or other industrial waste gases2
Substantially acid, can be by removing SO from flue gas with suitable alkali substance reaction2.Flue gas desulfurization is the most frequently used
Alkaline matter is limestone (calcium carbonate, CaCO3), quick lime (calcium oxide, CaO) and Calx (calcium hydroxide, Ca (OH)2).Existing
Some flue gas desulfurization facilities generally use quick lime sulfur removal technology, and current sintering flue gas desulfurization efficiency, synchronous operation rate are difficult
To reach design objective, it is impossible to meet discharge standard requirement.
The entrance SO of desulfurization equipment2Excessive concentration, liquid gas is too short for time of contact, causes flue gas to have little time to be absorbed and just sent
Go out to absorb reaction zone；Liquid-gas ratio is relatively low, entrance SO2Excessive concentration, spray flux is the least, and smoke contacts chance is little；Exhanst gas outlet is
Desulfurization tower top tilted direction enters discharge flue, and with gas approach at same operating surface, causes flue gas to be distributed not in desulfurizing tower
All；
According to desulfurizing tower inner structure size it can be seen that set up spraying layer without space, it is impossible to effectively extend contact time
And raising liquid-gas ratio；In desulfurizing tower, serosity is Calx, calcium sulfite, mixture of calcium sulfate, divides if installing gas at chimney intake
Cloth device, easily causes serosity and causes distributor to cave in distributor is deposited above, and impact runs and tower structure safety.Existing flue gas
Desulfurization equipment desulfuration efficiency is poor, it is difficult to eliminate oxysulfide, and after the process of discharge, air still can be caused bigger dirt by flue gas
Dye, sorbent consumption cost is high.
Summary of the invention
The technical assignment of the technical problem to be solved and proposition is to improve prior art, it is provided that a kind of
Flue gas desulphurization system, solves flue gas desulfurization facilities desulfuration efficiency traditional in current technology poor, and exhaust emission is big, sorbent consumption
The problem that cost is high.
For solving above technical problem, the technical scheme is that
A kind of flue gas desulphurization system, including sintering desulfuration tower and pelletizing desulfurizing tower, it is characterised in that described sintering desulfuration
The air intake vent of tower and pelletizing desulfurizing tower connects sintering exhaust gases passes and pelletizing exhaust gases passes, sintering desulfuration tower and pelletizing desulfurization respectively
The spray system of tower is connected with sintering limestone slurry liquid supply system, pelletizing limestone slurry liquid supply system respectively, and Calx is made of stones
Slurry system separates two-way and is connected as its offer with sintering limestone slurry liquid supply system, pelletizing limestone slurry liquid supply system respectively
Lime stone slurry, described sintering limestone slurry liquid supply system, pelletizing limestone slurry liquid supply system obtain in desulfurization processes
To gypsum slurries be delivered to gypsum dehydration system.Flue gas desulphurization system of the present invention uses wet method limestone-gypsum method
Flue gas is carried out desulfurization, sintered production line and pellet production line and shares limestone pulping and gypsum dehydration, utilize SO2Water has
There is good dissolubility and cause the feature of a series of chain reaction, removing by the way of substantial amounts of lime stone slurry washing flue gas
Remove most SO in flue gas2, reduce SO in flue gas2The purpose of concentration, desulfurized effect is good, efficiency is high, reduces discharge dirt
Dye, meets the demand of environmental protection, forces the Gypsum Fibrosum after oxidation to make gypsum patty by dehydration and transports outward.It is de-that the present invention uses limestone to do
Sulfur agent, the cost of limestone is far below quick lime, and list just can save great cost from sorbent consumption, improves production economy effect
Benefit.
Further, described sintering exhaust gases passes and pelletizing exhaust gases passes being provided with booster fan, flue gas is intensified
Blower fan flows into desulfurizing tower, and in desulfurizing tower, flue gas ramps up, and from the drop of desulfurizing tower inner nozzle ejection to decline, is formed reverse
Stream, the SO in flue gas2、SO3, HCl, flying dust and other pollutant removed, flow out neat stress from desulfurizing tower top and arrange through chimney
Be put in air, booster fan for overcoming the pressure loss in flow of flue gas, the crushing of flue gas occur mainly in desulfurizing tower and
Flue.Booster fan uses Silence Process axial flow blower, is processing low pressure loss, and during big flow flue gas, its operational efficiency is high, energy consumption
Low.And its operating condition is respectively provided with in the range of 40%～100% and preferably regulates performance, in order to adapt to load variations.
Further, described sintering desulfuration tower and pelletizing desulfurizing tower use the spray void tower of chimney tower unification, to greatest extent
Reduce blocking and the danger of fouling, sintering flue gas, pelletizing flue gas respectively in sintering desulfuration tower, pelletizing desulfurizing tower from bottom to top
The reverse haptoreaction of lime stone slurry of flowing and spray system ejection, SO2And SO3React with limestone in serosity, form Asia
Calcium sulfate, and oxidized air oxygen chemical conversion calcium sulfate in tower prime cement liquid/oxidation pond, solution saturated crystallization becomes Gypsum Fibrosum.
Further, if described spray system is provided with the spraying layer of dried layer, and every layer of spraying layer is equipped with individually
Circulating pump, thus the absorption serosity coverage rate of more than 200% in ensureing desulfurizing tower.
Further, described spray system uses spiral case nozzle and FRP spray piping, can be with longtime running without mill
Erosion, without the problem such as gyrpseous scale and blocking, the spraying layer layout design of each layer uniformly covers the cross section of desulfurizing tower.
Further, in described sintering desulfuration tower and pelletizing desulfurizing tower, the upside of spray system is provided with demister,
And demister is provided with two-stage, the bottom of every grade of demister and top are both provided with the shower of band nozzle, and water is strong from nozzle
Power sprays to bottom and the top of each element of demister, to reach to clean, and the purpose of scale removal.
Further, the sidewall of the tower prime cement liquid pool bottom described sintering desulfuration tower and pelletizing desulfurizing tower is provided with some
The side-installed type stirrer that platform is distributed uniformly and circumferentially, and tower prime cement liquid pool is additionally provided with oxidation air system, oxidation sky
Gas system is made up of oxidation fan and oxidation air distributor pipe, promotes that SO2 and SO3 and limestone in serosity react the sulfurous formed
Acid calcium is oxidized air oxygen chemical conversion calcium sulfate in tower prime cement liquid pool, and solution saturated crystallization becomes Gypsum Fibrosum.
Further, described sintering limestone slurry liquid supply system includes sintering limestone tank, sintering Gypsum Fibrosum tank and burning
Knot filtrate tank, in lime stone pulping system conveying lime stone slurry to sintering limestone tank, sintering limestone tank is de-with sintering again
The spray system of sulfur tower connects, and sintering Gypsum Fibrosum tank is connected reception gypsum slurries with the tower prime cement liquid pool of sintering desulfuration tower, the most again
Gypsum slurries is delivered to gypsum dehydration system, and the filtrate that gypsum dehydration system produces after preparing Gypsum Fibrosum is delivered to sinter filtrate
Tank, filtrate is input to the spray system of sintering desulfuration tower by sintering filtrate tank again as supplementary water；Described pelletizing limestone slurry
Liquid supply system includes pelletizing limestone tank, pelletizing Gypsum Fibrosum tank and pelletizing filtrate tank, lime stone pulping system conveying limestone slurry
Liquid is in pelletizing limestone tank, and lime stone slurry is transported to the spray system of pelletizing desulfurizing tower, pelletizing by pelletizing limestone tank again
Gypsum Fibrosum tank is connected reception gypsum slurries with the tower prime cement liquid pool of pelletizing desulfurizing tower, is delivered to gypsum slurries sinter Gypsum Fibrosum the most again
Tank, sintering filtrate tank separates branch road conveying filtrate to pelletizing filtrate tank, and pelletizing filtrate tank is defeated as supplementary water using filtrate again
Enter the spray system to pelletizing desulfurizing tower.Sintered production line and pellet production line share limestone pulping and gypsum dehydration, simplify
Equipment, improves equipment efficiency of usage, reduces equipment cost, improves production economy benefit.The filtration obtained in gypsum dehydration system
Water as in supplementary water circulation use to desulfurizing tower, maintains the liquid level equilibrium of tower prime cement liquid pool in desulfurizing tower, saving water resource,
Reduce production cost.
Further, described lime stone pulping system include the oscillating feeder being sequentially connected with, belt feeder of weighing,
Wet ball mill and lime stone slurry case, the particle diameter limestone particle less than 20mm is by oscillating feeder continuous-feeding, by wet type
Ball mill prepares the lime stone slurry of particle diameter≤0.044mm.
Further, gypsum slurries excavationg pump that described gypsum dehydration system includes being sequentially connected with, Gypsum Fibrosum cyclone and
Vacuum belt dewaterer, gypsum slurries by Gypsum Fibrosum cyclone be concentrated into water content 45～55% concentration gypsum slurries after enter
Vacuum belt dewaterer carries out washing dehydration and obtains Gypsum Fibrosum.In dehydration, it is rinsed removing chloride to gypsum filter cake,
Thus ensureing the quality of Gypsum Fibrosum, Gypsum Fibrosum is crossed a drainage part and is milled outside water as ball mill, and remaining sends desulfurizing tower back to as supplementing
Water, to maintain the liquid level equilibrium in desulfurizing tower.
Compared with prior art, the invention has the advantages that:
Flue gas desulphurization system of the present invention uses wet method limestone-gypsum method that flue gas is carried out desulfurization, and sintering is raw
The desulphurization system producing line and pellet production line combines, and has simplified equipment, and desulfurized effect is good, efficiency is high, reduces exhaust emission, meets
The demand of environmental protection, sorbent consumption low cost, thus greatly reduce production cost, improve production economy benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Disclosed in the embodiment of the present invention, a kind of flue gas desulphurization system, improves desulfuration efficiency and effect, effectively removes in flue gas
Oxysulfide, reduce pollution that air is caused, reduce desulfurization processing cost simultaneously, increase economic efficiency.
As it is shown in figure 1, a kind of flue gas desulphurization system, including sintering desulfuration tower 1 and pelletizing desulfurizing tower 2, described sintering takes off
The air intake vent of sulfur tower 1 and pelletizing desulfurizing tower 2 connects sintering exhaust gases passes 11 respectively and pelletizing exhaust gases passes 21 sinters exhaust gases passes
11 and pelletizing exhaust gases passes 21 on be provided with booster fan 13, booster fan 13 uses Silence Process axial flow blower, overcomes flue gas
The pressure loss in flowing.
The spray system of sintering desulfuration tower 1 and pelletizing desulfurizing tower 2 respectively with sintering limestone slurry liquid supply system 3, pelletizing
Limestone slurry liquid supply system 4 connects, lime stone pulping system 5 separate two-way respectively with sintering limestone slurry liquid supply system 3,
Pelletizing limestone slurry liquid supply system 4 is connected as it and provides lime stone slurry, described sintering limestone slurry liquid supply system 3,
The gypsum slurries that pelletizing limestone slurry liquid supply system 4 obtains in desulfurization processes is delivered to gypsum dehydration system 6.
Sintering desulfuration tower 1 and pelletizing desulfurizing tower 2 use the spray void tower that chimney tower is unified, and reduce blocking and knot to greatest extent
The danger of dirt, sintering flue gas, pelletizing flue gas flowing from bottom to top and spray in sintering desulfuration tower 1, pelletizing desulfurizing tower 2 respectively
The reverse haptoreaction of lime stone slurry of system ejection；If spray system is provided with the spraying layer of dried layer, and every layer of spraying layer
Being equipped with single circulating pump, spray system uses spiral case nozzle and FRP spray piping, can be with longtime running without denuding, without stone
The problems such as cream fouling and blocking；In sintering desulfuration tower 1 and pelletizing desulfurizing tower 2, the upside of spray system is provided with demister, and
And demister is provided with two-stage, the bottom of every grade of demister and top are both provided with the shower of band nozzle, and water is from nozzle strength
Spray to bottom and the top of each element of demister, to reach to clean, the purpose of scale removal；Sintering desulfuration tower 1 and pelletizing desulfurizing tower 2 end
The sidewall of the tower prime cement liquid pool in portion is provided with some the side-installed type stirrers being distributed uniformly and circumferentially, and tower prime cement liquid
Pond is additionally provided with oxidation air system, and oxidation air system is made up of oxidation fan and oxidation air distributor pipe.
In desulfurizing tower, flue gas and lime stone slurry counter current contacting, the SO in flue gas2And SO3Anti-with the limestone in serosity
Should, forming calcium sulfite and calcium sulfate, calcium sulfite is oxidized air oxygen chemical conversion calcium sulfate, satiety in Desulfurization tower slurry/pond
Gypsum Fibrosum (CaSO is generated with solution crystallization4·2H2O), HCl, the HF in flue gas also reacts with the limestone in serosity and is absorbed,
Neat stress after desulfurization dedusting discharges desulfurizing tower through chimney after removing, by demister, the droplet carried secretly in air-flow.
Sintering limestone slurry liquid supply system 3 includes sintering limestone tank 31, sintering Gypsum Fibrosum tank 32 and sintering filtrate tank 33,
Lime stone pulping system 5 carry lime stone slurry to sintering limestone tank 31 in, sintering limestone tank 31 again with sintering desulfuration tower 1
Spray system connect, sintering Gypsum Fibrosum tank 32 is connected with the tower prime cement liquid pool of sintering desulfuration tower 1 receive gypsum slurries, the most again general
Gypsum slurries is delivered to gypsum dehydration system 6, and the filtrate that gypsum dehydration system 6 produces after preparing Gypsum Fibrosum is delivered to sinter filtrate tank
33, filtrate is input to the spray system of sintering desulfuration tower 1 by sintering filtrate tank 33 again as supplementary water；Described pelletizing limestone
Serosity feed system 4 includes pelletizing limestone tank 41, pelletizing Gypsum Fibrosum tank 42 and pelletizing filtrate tank 43, and lime stone pulping system 5 is defeated
Sending lime stone slurry in pelletizing limestone tank 41, lime stone slurry is transported to pelletizing desulfurizing tower 2 by pelletizing limestone tank 41 again
Spray system, pelletizing Gypsum Fibrosum tank 42 be connected with the tower prime cement liquid pool of pelletizing desulfurizing tower 2 reception gypsum slurries, the most again by Gypsum Fibrosum
Serosity is delivered to sinter Gypsum Fibrosum tank 32, and sintering filtrate tank 33 separates a branch road conveying filtrate and filters to pelletizing filtrate tank 43, pelletizing
Filtrate is input to the spray system of pelletizing desulfurizing tower 2 by flow container 43 again as supplementary water.Sintered production line and pellet production line are altogether
By limestone pulping and gypsum dehydration, thin device quantity, improve equipment efficiency of usage, reduce equipment cost.
Lime stone pulping system 5 includes the oscillating feeder 51 being sequentially connected with, weigh belt feeder 52, wet ball mill
53 and lime stone slurry case 54, the particle diameter limestone particle less than 20mm is by oscillating feeder 51 continuous-feeding, by wet ball-milling
Machine 53 prepares the lime stone slurry of particle diameter≤0.044mm.
Gypsum dehydration system 6 includes that the gypsum slurries excavationg pump 61, Gypsum Fibrosum cyclone 62 and the vacuum belt that are sequentially connected with are de-
Water machine 63, gypsum slurries is squeezed into Gypsum Fibrosum cyclone and is concentrated by gypsum slurries excavationg pump 61, is concentrated into water content 45～55%
Concentration gypsum slurries after enter vacuum belt dewaterer 63, row washing dehydration, finally obtain desulfuration byproduct Gypsum Fibrosum.
In dehydration, gypsum filter cake being rinsed removing chloride, thus ensures the quality of Gypsum Fibrosum, Gypsum Fibrosum filters
Water is collected in filtrate box, and except a part is milled in addition to water as ball mill, remaining sends desulfurizing tower back to as supplementary water through filtrate pump,
With the liquid level equilibrium in maintenance desulfurizing tower, the flushing water of vacuum belt dewaterer includes filter cloth/filter cake flushing water, passes through flushing water
Pump, water tank provide.
Water in desulphurization system serosity during constantly recycling, can be enriched with many heavy metal element As, Pb,
Ni, Cr and Hg etc., on the one hand the enrichment of metallic element can be accelerated the corrosion of desulphurization plant, on the other hand can affect the product of Gypsum Fibrosum
Matter, therefore, desulphurization system to discharge a certain amount of waste water, thus by the filtrate in filtrate box through being pumped into corresponding settling tank
The most after precipitation, supernatant is overflowed by overflow pipe, enters ironworks Waste Water Treatment, neutralized, flocculate and precipitation etc. processes
Process, waste water enters plant area's drainage system after process is up to standard.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (10)
1. a flue gas desulphurization system, including sintering desulfuration tower (1) and pelletizing desulfurizing tower (2), it is characterised in that described sintering
The air intake vent of desulfurizing tower (1) and pelletizing desulfurizing tower (2) connects sintering exhaust gases passes (11) and pelletizing exhaust gases passes (21) respectively, burns
Knot desulfurizing tower (1) and pelletizing desulfurizing tower (2) spray system respectively with sinter limestone slurry liquid supply system (3), pelletizing Calx
Stone serosity feed system (4) connect, lime stone pulping system (5) separate two-way respectively with sintering limestone slurry liquid supply system
(3), pelletizing limestone slurry liquid supply system (4) is connected as it provides lime stone slurry, described sintering lime stone slurry supply
The gypsum slurries that system (3), pelletizing limestone slurry liquid supply system (4) obtain in desulfurization processes is delivered to gypsum dehydration system
(6)。
Flue gas desulphurization system the most according to claim 1, it is characterised in that described sintering exhaust gases passes (11) and pelletizing
Being provided with booster fan (13) on exhaust gases passes (21), booster fan (13) uses Silence Process axial flow blower.
Flue gas desulphurization system the most according to claim 1, it is characterised in that described sintering desulfuration tower (1) and pelletizing take off
Sulfur tower (2) uses the spray void tower of chimney tower unification, and sintering flue gas, pelletizing flue gas are respectively at sintering desulfuration tower (1), pelletizing desulfurizing tower
(2) flowing from bottom to top and the reverse haptoreaction of lime stone slurry of spray system ejection in.
Flue gas desulphurization system the most according to claim 3, it is characterised in that if described spray system is provided with dried layer
Spraying layer, and every layer of spraying layer single circulating pump of outfit.
Flue gas desulphurization system the most according to claim 4, it is characterised in that described spray system use spiral case nozzle and
FRP spray piping.
Flue gas desulphurization system the most according to claim 3, it is characterised in that described sintering desulfuration tower (1) and pelletizing take off
The upside of the inherent spray system of sulfur tower (2) is provided with demister, and demister is provided with two-stage, the bottom of every grade of demister and
Top is both provided with the shower of band nozzle.
Flue gas desulphurization system the most according to claim 3, it is characterised in that described sintering desulfuration tower (1) and pelletizing take off
The sidewall of the tower prime cement liquid pool of sulfur tower (2) bottom is provided with some the side-installed type stirrers being distributed uniformly and circumferentially, and
And tower prime cement liquid pool is additionally provided with oxidation air system, oxidation air system is made up of oxidation fan and oxidation air distributor pipe.
Flue gas desulphurization system the most according to claim 1, it is characterised in that described sintering limestone slurry liquid supply system
(3) including sintering limestone tank (31), sintering Gypsum Fibrosum tank (32) and sintering filtrate tank (33), lime stone pulping system (5) carries
Lime stone slurry is interior to sintering limestone tank (31), sinters the limestone tank (31) spray system again with sintering desulfuration tower (1) and connects
Connecing, sintering Gypsum Fibrosum tank (32) is connected reception gypsum slurries with the tower prime cement liquid pool of sintering desulfuration tower (1), the most again by gypsum slurries
Being delivered to gypsum dehydration system (6), the filtrate that gypsum dehydration system (6) produces after preparing Gypsum Fibrosum is delivered to sinter filtrate tank
(33), filtrate is input to the spray system of sintering desulfuration tower (1) by sintering filtrate tank (33) again as supplementary water；Described pelletizing
Limestone slurry liquid supply system (4) includes pelletizing limestone tank (41), pelletizing Gypsum Fibrosum tank (42) and pelletizing filtrate tank (43), Calx
Stone pulping system (5) conveying lime stone slurry is interior to pelletizing limestone tank (41), and pelletizing limestone tank (41) is again by limestone slurry
Liquid is transported to the spray system of pelletizing desulfurizing tower (2), and pelletizing Gypsum Fibrosum tank (42) is connected with the tower prime cement liquid pool of pelletizing desulfurizing tower (2)
Receiving gypsum slurries, gypsum slurries is delivered to sinter Gypsum Fibrosum tank (32) the most again, sintering filtrate tank (33) separates a branch road
Filtrate is input to pelletizing desulfurizing tower (2) as supplementary water to pelletizing filtrate tank (43), pelletizing filtrate tank (43) by conveying filtrate again
Spray system.
Flue gas desulphurization system the most according to claim 1, it is characterised in that described lime stone pulping system (5) includes
The oscillating feeder (51) being sequentially connected with, belt feeder of weighing (52), wet ball mill (53) and lime stone slurry case (54),
The particle diameter limestone particle less than 20mm by oscillating feeder (51) continuous-feeding, by wet ball mill (53) prepare particle diameter≤
The lime stone slurry of 0.044mm.
Flue gas desulphurization system the most according to claim 1, it is characterised in that described gypsum dehydration system (6) includes depending on
The gypsum slurries excavationg pump (61) of secondary connection, Gypsum Fibrosum cyclone (62) and vacuum belt dewaterer (63), gypsum slurries passes through stone
Cream cyclone () be concentrated into water content 45～55% concentration gypsum slurries after enter vacuum belt dewaterer (63) and wash
Dehydration obtains Gypsum Fibrosum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643747.8A CN106110866A (en) | 2016-08-08 | 2016-08-08 | A kind of flue gas desulphurization system |
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| CN201610643747.8A CN106110866A (en) | 2016-08-08 | 2016-08-08 | A kind of flue gas desulphurization system |
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| CN (1) | CN106110866A (en) |
Cited By (2)
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Application publication date: 20161116 |