CN109331631A - A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation - Google Patents
A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation Download PDFInfo
- Publication number
- CN109331631A CN109331631A CN201811308027.1A CN201811308027A CN109331631A CN 109331631 A CN109331631 A CN 109331631A CN 201811308027 A CN201811308027 A CN 201811308027A CN 109331631 A CN109331631 A CN 109331631A
- Authority
- CN
- China
- Prior art keywords
- desulfurization denitrification
- pipe
- water pipe
- water
- integrated device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation, fire coal boiler fume high-efficiency desulfurization denitrification integrated device includes desulfurization denitrification agent conveyor module, desulfurization denitrification agent metered injection module, circulated sprinkling system, desulfurization denitrification agent conveyor module is connected with desulfurization denitrification agent metered injection module, desulfurization denitrification agent metered injection module is connected with circulated sprinkling system, the present invention is big for existing desulfurizing and denitrifying process and equipment investment, it is cumbersome to run program, the drawbacks such as failure rate height, proof strength and acid-proof alkaline, improve contact of the flue gas with loop slurry, improve denitrification efficiency.
Description
Technical field
The present invention relates to a kind of desulfuring and denitrifying apparatus more particularly to a kind of small scall coal-fired boiler flue gas high-efficiency desulfurization denitrations one
Body makeup is set and its implementation, belongs to environmental protection machinery equipment technical field.
Background technique
Although the use of coal-burning boiler makes tremendous contribution to the economic liftoff in China, the discharge of flue gas exhaust gas is also right
China's air environment causes huge pollution, and SO2, NOX pollution have been more than the first big pollutant that smoke contamination becomes atmospheric environment.
Prior art desulfurization mainly has wet desulphurization, semi-dry desulphurization, dry desulfurization etc., and wet desulphurization mainly has lime
The sulfur removal technologies such as stone-gypsum, magnesium oxide method, ammonia process, alkaline process；At present the relatively broad denitration technology of domestic application be SCR and
Catalyst is core in SNCR, SCR non-selective catalytic reduction denitration technology, 350 degree of running temperature or so；SNCR selectivity
Catalytic-reduction denitrified technique is usually to spray into the ammonium hydroxide of content 10-20% in high temperature reaction zone, and denitration optimum temperature is 850~
1100℃。
Country's mainstream sulfur removal technology is based on Limestone-gypsum Wet Flue Gas Desulfurization Process at present, equipment initial investment and operation electricity
Take higher, and spray column internal component and pipe wear are serious；SCR denitration cost of investment is larger, and general small business is difficult to hold
By；SNCR denitration temperature requirement is higher, and the injection of reducing agent easily causes in reaction zone temperature decrease and uneven, leads to denitration
Inefficiency, general denitration efficiency is only 30-50% at present, and influences efficiency of combustion in furnace.
Present small scall coal-fired boiler substantial amounts, although shutting down a batch, some needs the subsequent reforwarding of environmental transformation
It is capable, if the discharge index that environmental transformation reaches 35mg/Nm3 and 50mg/Nm3 need to newly go up high-efficiency desulfurization and denitrification apparatus is (general
For wet desulphurization and SCR denitration), equipment investment is huge.
Summary of the invention
The technical problem to be solved by the present invention is to against the above deficiency, for existing desulfurizing and denitrifying process and equipment investment
Greatly, the drawbacks such as operation program is cumbersome, failure rate is high provide a kind of high-efficiency desulfurization denitration one for small scall coal-fired boiler flue gas
Makeup is set and its implementation.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows: a kind of fire coal boiler fume efficiently takes off
Sulphur denitrification integrated device, including desulfurization denitrification agent conveyor module, desulfurization denitrification agent metered injection module, circulated sprinkling system,
Desulfurization denitrification agent conveyor module is connected with desulfurization denitrification agent metered injection module, and desulfurization denitrification agent metered injection module, which is connected with, to be followed
Ring spray system.
As a further improvement of the above technical scheme:
The desulfurization denitrification agent conveyor module is connected with two groups of dilution water pumps, and circulated sprinkling system is connected with circulating pump, and two groups dilute
It releases water pump and is connected with dilution water pot, dilution water pot is connected from deionized water system.
One end of the desulfurization denitrification agent conveyor module is connected with sodium chlorite storage tank, and sodium chlorite storage tank is connected with unloading
Pump, de-ballast pump are connected with transport tank car, and transport tank car is connected with wastewater disposal basin.
The desulfurization denitrification agent conveyor module is pumped including two Sets of Measurement, the first water pipe of one of metering pump connection, and first
The end of water pipe connects pressure gauge, and the first water pipe is communicated with the second water pipe, the junction of the second water pipe and short tube by short tube
Top be successively arranged check valve and the first shut-off valve, the lower section of the junction of the second water pipe and short tube is equipped with safety valve, second
Water pipe is communicated with third water pipe, and third water pipe is equipped with the second shut-off valve, and the lower end of third water pipe is communicated with the 4th water pipe, and the 4th
Water pipe is connected to the second water pipe, and the end of the 4th water pipe, which is equipped with, rinses water out, and the lower end of the first water pipe is communicated with the 5th water
Pipe, the 5th water pipe are communicated with wash tub pipe, and the 5th water pipe is connected to sodium chlorite storage tank.
The desulfurization denitrification agent metered injection module includes desulfurization denitrification agent flow measurement control unit, both air flow modulation
Unit, compressed air require control unit, desulfurization denitrification agent flow measurement control unit include pipe-line mixer, pipe-line mixer
It has been respectively communicated with the first sparge pipe and the second sparge pipe, third shut-off valve, stream are equipped on the first sparge pipe and the second sparge pipe
Meter, the first solenoid valve, the first sparge pipe and the second sparge pipe are separately connected spray gun.
The both air flow modulation unit includes being equipped with second from compressed air main line from compressed air main line
The two sides of meter, second flowmeter are respectively equipped with ball valve, are connected to from compressed air main line with compressed air require control unit.
The compressed air require control unit includes the first purging tracheae, the first injection tracheae, the second purging tracheae, the
Two injection tracheaes, the first purging tracheae, second, which purge, is respectively equipped with the 4th shut-off valve, the first pressure regulator valve on tracheae, the first injection
The second pressure regulator valve, second solenoid valve are respectively equipped on tracheae, the second injection tracheae, the first purging tracheae, the first injection tracheae, the
Two purging tracheaes, the second injection tracheae are separately connected spray gun.
A kind of implementation method of fire coal boiler fume high-efficiency desulfurization denitrification integrated device, the implementation method specifically include
Following steps:
The sodium chlorite solution that concentration is 20% is transported to inner storage tank area of factory by transport tank car, tank car will be transported by de-ballast pump
Interior solution is unloaded to sodium chlorite storage tank, and solution is delivered to reaction tower by two two Sets of Measurement pumps by sodium chlorite storage tank lower part
Top, the setting metering mixing tank at top platform, is adjusted by flow and mixer mixes sodium chlorite solution and process water
It is combined into 10% solution, reaction tower is sprayed by two condition spray gun and carries out desulphurization denitration processing, while unreacted solution enters tower
The interior replenisher application as lower two-stage spray system.
The first grade desulfurizing denitration spray system uses glass steel material, and thickness is not less than 4mm, there is enough intensity and resistance to
Corrosive nature；All nozzles use heavy caliber eddy current atomization nozzle, and nozzle material is made of carbofrax material；Sprayed slurry is adopted
It is reused with tower inner loop mode, when concentration of slurry reaches saturation, discharge is transported to sewage treatment plant and is uniformly processed.
It, will be dense in two-grade desulfurizing denitration spray system by atomizing lance after the processing of first grade desulfurizing denitration spray system
It spends higher oxidant to spray into, carries out secondary response with the flue gas of preliminary treatment.
The present invention takes above technical scheme, has the advantage that
1, equipment is simple, and one-time investment is few, the low stable and reliable operation of maintenance cost；
2, equipment volume is small, and general old old factory rehabilitation space is limited, this technique occupied area is small, high-efficient；
3, reaction tower, pipeline and spray equipment use glass steel material, proof strength and acid-proof alkaline；
4, using automatic adjustment metering system, guarantee reduction agent flux, save operating cost；
5, tower body inlet air flow uniform board is arranged in reaction tower ontology air inlet, guarantees air-flow Uniform Flow in tower, improves flue gas
Contact with loop slurry；
6, modularization assembling, convenient maintenance and replacement are carried out；
7, multilayer water retaining disk is arranged in reaction tower, reduces erosion of the slurries to reaction tower wall to the greatest extent, reduces air-flow and escapes along barrel wall
Phenomenon improves denitrification efficiency；
8, the mode of washing combined using spray gun top layer atomizing spray, the big liquid-gas ratio spray of middle part nozzle atomization, it is de- to improve reaction
Except efficiency.
Present invention will be further explained below with reference to the attached drawings and examples.
Detailed description of the invention
Attached drawing 1 is the system flow signal of fire coal boiler fume high-efficiency desulfurization denitrification integrated device in the embodiment of the present invention
Figure；
Attached drawing 2 is the structural schematic diagram of desulfurization denitrification agent conveyor module in the embodiment of the present invention；
Attached drawing 3 is the structural schematic diagram of desulfurization denitrification agent metered injection module in the embodiment of the present invention；
Attached drawing 4 is the structural schematic diagram of reaction tower tower body flue gas even distribution device in the embodiment of the present invention；
Attached drawing 5 is the top view of attached drawing 4；
Attached drawing 6 is the structural schematic diagram of water retaining disk in the embodiment of the present invention；
Attached drawing 7 is the structural schematic diagram of tower body inlet air flow uniform board in the embodiment of the present invention；
Attached drawing 8 is the left view of attached drawing 7；
Attached drawing 9 is the structural schematic diagram of tower body inlet air flow uniform board and air inlet；
Attached drawing 10 is the top view of attached drawing 9；
Attached drawing 11 is the structural schematic diagram of the first spraying layer in the embodiment of the present invention；
Attached drawing 12 is the structural schematic diagram of the second spraying layer in the embodiment of the present invention.
In figure, 1- desulfurization denitrification agent conveyor module；2- desulfurization denitrification agent metered injection module；3- circulated sprinkling system；4-
Sodium chlorite storage tank；5- de-ballast pump；6- transports tank car；7- wastewater disposal basin；8- dilutes water pot；9- dilutes water pump；10- circulating pump；11-
Metering pump；The first water pipe of 12-；13- pressure gauge, the second water pipe of 14-, 15- short tube, 16- safety valve, 17- check valve, 18- first
Shut-off valve, 19- third water pipe, the second shut-off valve of 20-, the 4th water pipe of 21-, 22- wash tub pipe, the 5th water pipe of 23-, 24- are rinsed
Water out, 25- ammonium hydroxide flow measurement control unit, 26- both air flow modulation unit, 27- compressed air require control unit,
28- pipe-line mixer, the first sparge pipe of 29-, the second sparge pipe of 30-, 31- third shut-off valve, 32- first flowmeter, 33- first
Solenoid valve, 34- purge tracheae from compressed air main line, 35- second flowmeter, 36- ball valve, 37- first, and 38- first sprays
Tracheae, 39- second purge tracheae, and 40- second sprays tracheae, the 4th shut-off valve of 41-, the first pressure regulator valve of 42-, the second pressure regulation of 43-
Valve, 44- second solenoid valve, 45- reaction tower, 46- tower body flue gas even distribution device, 47- water retaining disk, 48- air inlet, the upper edge of 49-,
Edge under 50-, the first spraying layer of 51-, the second spraying layer of 52-, 53- central water tube, 54- first support bar, 55- second are supported
Bar, the first distributive pipe of 56-, the second distributive pipe of 57-, 58- third distributive pipe, the 4th distributive pipe of 59-, the 5th distributive pipe of 60-, 61-
First sparge pipe, 62- third sparge pipe, the second sparge pipe of 63-, the 4th sparge pipe of 64-, the 5th sparge pipe of 65-, 66- the 6th spray
Water pipe, the 7th sparge pipe of 67-, the 8th sparge pipe of 68-, the 9th sparge pipe of 69-, the 5th sparge pipe of 70-, 71- spray gun, 72- disk body,
73- supporting member, 74- try to get to the heart of a matter, 75- third spraying layer, 76- spray water flow, 77- flue gas stream, and 78- tower body inlet air flow is uniformly distributed
Plate.
Specific embodiment
Embodiment, as shown in attached drawing 1-12, a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device, including desulfurization
Denitrfying agent conveyor module 1, desulfurization denitrification agent metered injection module 2, circulated sprinkling system 3, the one of desulfurization denitrification agent conveyor module 1
End is connected with sodium chlorite storage tank 4, and sodium chlorite storage tank 4 is connected with de-ballast pump 5, and de-ballast pump 5 is connected with transport tank car 6, transport
Tank car 6 is connected with wastewater disposal basin 7；
Desulfurization denitrification agent conveyor module 1 is connected separately with desulfurization denitrification agent metered injection module 2 and two groups of dilution water pumps 9, desulfurization
Denitrfying agent metered injection module 2 is connected with circulated sprinkling system 3, and circulated sprinkling system 3 is connected with circulating pump 10, two groups of dilution waters
Pump 9 is connected with dilution water pot 8, and dilution water pot 8 is connected from deionized water system；
Desulfurization denitrification agent conveyor module 1 includes two Sets of Measurement pump 11, and one of metering pump 11 connects the first water pipe 12, and first
The end of water pipe 12 connects pressure gauge 13, and the first water pipe 12 is communicated with the second water pipe 14 by short tube 15, the second water pipe 14 with
Check valve 17 and the first shut-off valve 18, the handover of the second water pipe 14 and short tube 15 are successively arranged above the junction of short tube 15
The lower section at place is equipped with safety valve 16, and the second water pipe 14 is communicated with third water pipe 19, and third water pipe 19 is equipped with the second shut-off valve 20,
The lower end of third water pipe 19 is communicated with the 4th water pipe 21, and the 4th water pipe 21 is connected to the second water pipe 14, the end of the 4th water pipe 21
Equipped with water out 24 is rinsed, the lower end of the first water pipe 12 is communicated with the 5th water pipe 23, and the 5th water pipe 23 is communicated with wash tub pipe
22, the 5th water pipe 23 is connected to sodium chlorite storage tank 4;
Desulfurization denitrification agent metered injection module 2 includes desulfurization denitrification agent flow measurement control unit 25, both air flow modulation unit
26, compressed air require control unit 27, desulfurization denitrification agent flow measurement control unit 25 include pipe-line mixer 28, and desulfurization is de-
Solution enters pipe-line mixer 28 after the mixed diluting of nitre agent and dilution water, and pipe-line mixer 28 has been respectively communicated with the first sparge pipe
29 and second sparge pipe 30, third shut-off valve 31, flowmeter 32, first are equipped on the first sparge pipe 29 and the second sparge pipe 30
Solenoid valve 33, the first sparge pipe 29 and the second sparge pipe 30 are separately connected spray gun 71；
Both air flow modulation unit 26 includes being equipped with second flow from compressed air main line 34 from compressed air main line 34
Meter 35, the two sides of second flowmeter 35 are respectively equipped with ball valve 36, single from compressed air main line 34 and compressed air require control
Member 27 is connected to；
Compressed air require control unit 27 includes that the first purging tracheae 37, first sprays tracheae 38, second and purges tracheae 39, the
Two injection tracheaes 40, the first purging tracheae 37, second, which purges, is respectively equipped with the 4th shut-off valve 41, the first pressure regulator valve on tracheae 39
42, the first injection tracheae 38, second, which sprays, is respectively equipped with the second pressure regulator valve 43, second solenoid valve 44 on tracheae 40, the first purging
Tracheae 37, first sprays the purging injection tracheae 40 of tracheae 39, second of tracheae 38, second and is separately connected spray gun 71；
The sodium chlorite solution of outsourcing 20% is transported to behind scene and is delivered to the storage of reducing agent holding vessel, tank bottom using de-ballast pump
Two metering conveying pumps are set, and sodium chlorite solution mixes list before being delivered to spray gun by electromagnetic flowmeter by metering conveying pump
Mixer is arranged in member before spray gun in mixed cell, sodium chlorite solution and process water are mixed, and spray gun uses two morphotypes
Compressed air is controlled compressed air require by electromagnetism suspended body flowmeter by formula spray gun, i.e. liquid and gaseous state collective effect, will be dilute
It releases rear solution atomization to optimum state to be sprayed, increases the contact area of solution and flue gas.Solution after dilution is sprayed by top layer
Rifle enters inside reaction tower, and delivery pump uses the form of the using and the reserved, piping-main scheme connection.The ammonia spirit flow of each boiler is by setting
The motorized adjustment valve regulation on each branch pipe is set, keeps the reduction agent flux of each boiler in a basic balance, each point is arranged pressure, stablizes inspection
Survey device, real-time detecting system operating condition.
Circulated sprinkling system 3 includes reaction tower 45, is equipped with tower body flue gas even distribution device 46 in reaction tower 45, tower body flue gas is equal
Cloth apparatus 46 includes water retaining disk 47, and water retaining disk 47 is arranged on the inner wall of reaction tower 45, and water retaining disk 47 includes disk body 72 and tries to get to the heart of a matter
74, the lower section of disk body 72 is equipped with supporting member 73, in the section of water retaining disk 47: disk body 72 and tower body wall angle are 60 degree；Water blocking
Disk 47 prevents erosion of the shower water to tower body, while preventing flue gas from escaping along tower body wall, and flue gas is forced to contact with desulfurization denitrification agent.
The reaction tower 45 of 47 lower section of water retaining disk is equipped with air inlet 48, and air inlet 48 is in toroidal, the cross of air inlet 48
Section includes upper edge 49 and lower edge 50, and upper edge 49 is horizontally disposed, and the angle of upper edge 49 and lower edge 50 is 6 degree, into
Middle part is equipped with multilayer tower body inlet air flow uniform board 78 in air port 48, and the shape of tower body inlet air flow uniform board 78 is " L " type, i.e.,
Intensity can be increased can prevent air-flow from escaping again, and density of the tower body inlet air flow uniform board 78 on 48 top of air inlet is greater than lower part
Density makes on section that smoke distribution is uniform everywhere to achieve the purpose that resistance balance, so that it is uniformly distributed to reach reaction tower interior air-flow
Effect, reaction tower interior air-flow can uniformly increase reacting for flue gas and desulfurization denitrification agent, improve denitrification efficiency.
Three layers of spraying layer, respectively the first spraying layer 51, the second spraying layer 52, third spraying layer are equipped in reaction tower 45
75, third spraying layer 75 be arranged above two layers of spraying layer, the first spraying layer 51 include central water tube 53, central water tube 53 and its
In circulating pump 10 be connected to, the two sides of central water tube 53 are respectively equipped with first support bar 54 and second support bar 55, first
Strut 54, second support bar 55 are arranged in parallel with central water tube 53 respectively, divide between first support bar 54 and second support bar 55
It She You not the first distributive pipe 56, the second distributive pipe 57, third distributive pipe 58, the 4th distributive pipe 59 and the 5th distributive pipe 60；
The side of first distributive pipe 56 is set there are two the first sparge pipe 61, and two the first sparge pipes 61 are separately positioned on central water tube
53 two sides, two the first sparge pipes 61 are arranged between first support bar 54 and second support bar 55, the first distributive pipe 56 it is another
Side is set there are two the second sparge pipe 63, and two the second sparge pipes 63 are separately positioned on first support bar 54 and second support bar 55
Outside, the both ends of the first distributive pipe 56 are respectively equipped with third sparge pipe 62；
Second distributive pipe 57 is identical as 56 length of the first distributive pipe, and the side of the second distributive pipe 57 is set there are two the 4th sparge pipe
64, two the 4th sparge pipes 64 are separately positioned on 53 two sides of central water tube, and two the first sparge pipes 61 are arranged in first support bar
Between 54 and second support bar 55, the both ends of the second distributive pipe 57 are respectively equipped with the 5th sparge pipe 70,
Third distributive pipe 58, the 4th distributive pipe 59 are separately positioned on the two sides of the first distributive pipe 56, the second distributive pipe 57, third point
The side of water pipe 58 is set there are two the 5th sparge pipe 65, and two the 5th sparge pipes 65 are separately positioned on 53 two sides of central water tube, and two
A first sparge pipe 61 is arranged between first support bar 54 and second support bar 55, and the both ends of third distributive pipe 58 are respectively equipped with
6th sparge pipe 66,
The side of 4th distributive pipe 59 is set there are two the 7th sparge pipe 67, and two the 7th sparge pipes 67 are separately positioned on central water tube
53 two sides, two the first sparge pipes 61 are arranged between first support bar 54 and second support bar 55, and the two of the 4th distributive pipe 59
End is respectively equipped with the 8th sparge pipe 68,
The other side of the 4th distributive pipe 59 is arranged in 5th distributive pipe 60, and the both ends of the 5th distributive pipe 60 are respectively equipped with the 9th water spray
Pipe 69,
Third sparge pipe 62, the 5th sparge pipe 70, the 6th sparge pipe 66, the 8th sparge pipe 68, the 9th sparge pipe 69 are in same circle
Zhou Shang,
Second spraying layer 52 is identical as 51 structure of the first spraying layer, the central water tube of the second spraying layer 52 and the first spraying layer 51
The angle of straight line is 18 degree where central water tube.
Thus nozzle generates a concentration of slurry up to 200% using special arrangement, whole spray, coverage rate inside tower body
Quite intensive, the spray space with suitable degree of overlapping, the design parameter of every layer of spraying layer is different, under big on spray partial size
Tiny steam and formation of foam steam small, that lower layer's spray generates.
In desulfurizing tower, from lower to upper, from top to bottom, gas-liquid forms reverse exchange to slurries to flue gas.In this way, first can prolong
The long slurries skyborne residence time, desulphurization denitration is abundant, and denitrification efficiency is high；It second is that gas-liquid conversed exchange is conducive to gas
Flow the synchronous homogenization being distributed with aerial cloud point；Third is that desulfurizing agent is fully used, operating cost is low.
Third layer spraying layer is arranged in top, and two atomizing lances, the solution of lance ejection sodium chlorite and water, through height is arranged
Air blown atomization is pressed, is contacted with the gas of desulphurization denitration preliminary in tower, requirement discharge efficiency is reached, injection solution enters
Supplement of the bottom cycle slurry pool as circulation fluid in tower.Two layers of the use dual-purpose one in lower part is for lining plastic corrosion free pump circulated sprinkling benefit
With.
After flue gas enters in tower from desulfurizing tower lower inlet, the SO2 of high concentration is first and the spray phase of low alkalinity, big closeness
Mixing carries out desulphurization denitration.
With the progress of desulphurization denitration, SO2, amount of NOx in flue gas are gradually decreased, and flue gas is more up, slurries it is dense
Degree is higher instead, is conducive to the raising of denitrification efficiency.
The implementation method specifically includes the following steps:
The sodium chlorite solution that concentration is 20% is transported to inner storage tank area of factory by transport tank car 6, by de-ballast pump 5 by conveying trough
Solution is unloaded to sodium chlorite storage tank 4 in vehicle 6, and solution is delivered to by 4 lower part of sodium chlorite storage tank by two two Sets of Measurement pumps 11
The top of reaction tower 45, the setting metering mixing tank at top platform, adjusted by flow and mixer by sodium chlorite solution and
Process water is mixed into 10% solution, sprays into reaction tower 45 by two condition spray gun and carries out desulphurization denitration processing, while is unreacted
Solution enters the replenisher application in tower as lower two-stage spray system.It reacts tower bottom and three circulating pumps 10 is set, it is right respectively
Two layers of spraying layer in the middle part of reaction tower is answered, slurry spraying system is made of distribution pipe network and nozzle inside reaction tower, spray system
The spray flow that design energy reasonable layout requires, keeps flue gas flow direction uniform, and ensure that absorbent comes into full contact with and reacts with flue gas.It is logical
Cross two-stage spray flue gas energy qualified discharge.
(1) first grade desulfurizing denitration spray system
Slurry spraying system uses glass steel material, and thickness is not less than 4mm, there is enough intensity and corrosion resistance.Slurries connection
Case can not only be uniformly distributed slurries in main pipe, and slurries can be evenly distributed to the branch pipe of connection nozzle.All nozzles
Using heavy caliber eddy current atomization nozzle, nozzle material is made of carbofrax material.The design easy access of nozzle and pipeline, punching
It washes and replaces.Sprayed slurry is reused using tower inner loop mode, excludes to be transported at sewage when concentration of slurry reaches saturation
Reason factory is uniformly processed.Chemical equation are as follows:
(2) two-grade desulfurizing denitration spray system
For the removal efficiency for guaranteeing SO2, NOX, after previous stage pretreatment, finally by atomizing lance, by the higher oxygen of concentration
Agent sprays into, and carries out secondary response with the flue gas of preliminary treatment, this reaction is more strong, therefore can reach best removal effect；Oxygen
Agent and flue gas come into full contact be SO2, NOX removal efficiency guarantee, to increase smoke contacts area, oxidant, which sprays into, to be used
The spray gun that gasifies, which sprays into, (to be atomized by compressed air by solution, designs fan nozzle, adjust compressed air pressure, spray fan-shaped liquid
Cloudy surface, has reached section all standing, and spray gun is arranged symmetrically.Wherein desulphurization denitration main reaction formula are as follows:
The above is the citing of best mode for carrying out the invention, wherein the part that do not address in detail is ordinary skill
The common knowledge of personnel.Protection scope of the present invention is based on the contents of the claims, any based on technical inspiration of the invention
And the equivalent transformation carried out, also within protection scope of the present invention.
Claims (10)
1. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device, it is characterised in that: convey mould including desulfurization denitrification agent
Block (1), desulfurization denitrification agent metered injection module (2), circulated sprinkling system (3), desulfurization denitrification agent conveyor module (1) are connected with de-
Sulphur denitrfying agent metered injection module (2), desulfurization denitrification agent metered injection module (2) are connected with circulated sprinkling system (3).
2. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as described in claim 1, it is characterised in that: described
Desulfurization denitrification agent conveyor module (1) is connected with two groups of dilution water pumps (9), and circulated sprinkling system (3) is connected with circulating pump (10),
Two groups of dilution water pumps (9) are connected with dilution water pot (8), and dilution water pot (8) is connected from deionized water system.
3. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as described in claim 1, it is characterised in that: described
One end of desulfurization denitrification agent conveyor module (1) is connected with sodium chlorite storage tank (4), and sodium chlorite storage tank (4) is connected with de-ballast pump
(5), de-ballast pump (5) is connected with transport tank car (6), and transport tank car (6) is connected with wastewater disposal basin (7).
4. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as claimed in claim 3, it is characterised in that: described
Desulfurization denitrification agent conveyor module (1) includes two Sets of Measurement pump (11), and one of metering pump (11) connects the first water pipe (12),
The end of first water pipe (12) connects pressure gauge (13), and the first water pipe (12) is communicated with the second water pipe (14) by short tube (15),
It is successively arranged check valve (17) and the first shut-off valve (18) above the junction of second water pipe (14) and short tube (15), second
The lower section of the junction of water pipe (14) and short tube (15) is equipped with safety valve (16), and the second water pipe (14) is communicated with third water pipe
(19), third water pipe (19) is equipped with the second shut-off valve (20), and the lower end of third water pipe (19) is communicated with the 4th water pipe (21), the
Four water pipes (21) are connected to the second water pipe (14), and the end of the 4th water pipe (21), which is equipped with, rinses water out (24), the first water pipe
(12) lower end is communicated with the 5th water pipe (23), and the 5th water pipe (23) is communicated with wash tub pipe (22), the 5th water pipe (23) and Asia
Sodium chlorate storage tank (4) connection.
5. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as described in claim 1, it is characterised in that: described
Desulfurization denitrification agent metered injection module (2) includes desulfurization denitrification agent flow measurement control unit (25), both air flow modulation unit
(26), compressed air require control unit (27), desulfurization denitrification agent flow measurement control unit (25) includes pipe-line mixer
(28), pipe-line mixer (28) has been respectively communicated with the first sparge pipe (29) and the second sparge pipe (30), the first sparge pipe (29) and
Third shut-off valve (31), flowmeter (32), the first solenoid valve (33), the first sparge pipe (29) are equipped on second sparge pipe (30)
Spray gun (71) are separately connected with the second sparge pipe (30).
6. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as claimed in claim 5, it is characterised in that: described
Both air flow modulation unit (26) includes being equipped with second from compressed air main line (34) from compressed air main line (34)
Meter (35), the two sides of second flowmeter (35) are respectively equipped with ball valve (36), from compressed air main line (34) and compressed air
Flow controlling unit (27) connection.
7. a kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as claimed in claim 5, it is characterised in that: described
Compressed air require control unit (27) includes the first purging tracheae (37), the first injection tracheae (38), the second purging tracheae
(39), the second injection tracheae (40), the first purging tracheae (37), second, which purge, is respectively equipped with the 4th shut-off valve on tracheae (39)
(41), the first pressure regulator valve (42), the first injection tracheae (38), second, which are sprayed, is respectively equipped with the second pressure regulator valve on tracheae (40)
(43), second solenoid valve (44), the first purging tracheae (37), the first injection tracheae (38), the second purging tracheae (39), the second spray
Pipe (40) of emanating is separately connected spray gun (71).
8. a kind of implementation method of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as described in claim 1, special
Sign is: the implementation method specifically includes the following steps:
The sodium chlorite solution that concentration is 20% is transported to inner storage tank area of factory by transport tank car (6), will be transported by de-ballast pump (5)
The interior solution of defeated tank car (6) is unloaded to sodium chlorite storage tank (4), and sodium chlorite storage tank (4) lower part pumps (11) by two two Sets of Measurement,
Solution is delivered at the top of reaction tower (45), the setting metering mixing tank at top platform, is adjusted by flow and mixer will
Sodium chlorite solution and process water are mixed into 10% solution, spray into reaction tower (45) by two condition spray gun and carry out desulphurization denitration
Processing, while unreacted solution enters the replenisher application in tower as lower two-stage spray system.
9. a kind of implementation method of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as claimed in claim 8, special
Sign is: the first grade desulfurizing denitration spray system uses glass steel material, and thickness is not less than 4mm, there is enough intensity and resistance to
Corrosive nature；All nozzles use heavy caliber eddy current atomization nozzle, and nozzle material is made of carbofrax material；Sprayed slurry is adopted
It is reused with tower inner loop mode, when concentration of slurry reaches saturation, discharge is transported to sewage treatment plant and is uniformly processed.
10. a kind of implementation method of fire coal boiler fume high-efficiency desulfurization denitrification integrated device as claimed in claim 9, special
Sign is: after the processing of first grade desulfurizing denitration spray system, in two-grade desulfurizing denitration spray system by atomizing lance, by concentration
Higher oxidant sprays into, and carries out secondary response with the flue gas of preliminary treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308027.1A CN109331631A (en) | 2018-11-05 | 2018-11-05 | A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308027.1A CN109331631A (en) | 2018-11-05 | 2018-11-05 | A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109331631A true CN109331631A (en) | 2019-02-15 |
Family
ID=65313728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308027.1A Pending CN109331631A (en) | 2018-11-05 | 2018-11-05 | A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109331631A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060198778A1 (en) * | 2002-06-05 | 2006-09-07 | Barckholtz Timothy A | Reduction of NOx in fluid catalytic cracking regenerator off-gas streams |
| CN1883768A (en) * | 2006-05-29 | 2006-12-27 | 浙江大学 | Wet method combined process for desulfurization and denitration for chlorine-containing strong oxidizer absorption liquid |
| CA2762926A1 (en) * | 2009-06-17 | 2010-12-23 | Mitsubishi Heavy Industries, Ltd. | Mercury reduction system and mercury reduction method of flue gas containing mercury |
| KR20150081049A (en) * | 2014-01-03 | 2015-07-13 | 인하대학교 산학협력단 | Method for simultaneously eliminating of nitrogen oxide and sulfur oxide gas by electric precipitator |
| CN105169913A (en) * | 2015-08-16 | 2015-12-23 | 南京理工大学 | Chlorine dioxide oxidizing agent supply system for boiler flue gas denitration and technology thereof |
| CN106178899A (en) * | 2016-08-30 | 2016-12-07 | 山东格润内泽姆环保科技有限公司 | Compound dioxygen oxidation and denitration process and device |
| CN106731601A (en) * | 2016-12-22 | 2017-05-31 | 青岛大学 | A kind of solwution method flue gas desulfurization and denitrification integrated apparatus |
| CN107138038A (en) * | 2017-07-11 | 2017-09-08 | 毕伟新 | A kind of wet desulphurization denitration dust collecting integrated technique and device |
| CN206935094U (en) * | 2017-07-10 | 2018-01-30 | 云南澄江天辰磷肥有限公司 | A kind of SNCR equipment for denitrifying flue gas |
| CN108295634A (en) * | 2018-04-11 | 2018-07-20 | 江苏垦乐节能环保科技有限公司 | A kind of sintering flue gas high-efficiency desulfurization denitrating system and its implementation |
| CN108499343A (en) * | 2018-05-30 | 2018-09-07 | 南京优蓝环保科技有限公司 | A kind of coal-fired boiler tail gas integrated desulfurization, denitration, smoke harnessing system |
-
2018
- 2018-11-05 CN CN201811308027.1A patent/CN109331631A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060198778A1 (en) * | 2002-06-05 | 2006-09-07 | Barckholtz Timothy A | Reduction of NOx in fluid catalytic cracking regenerator off-gas streams |
| CN1883768A (en) * | 2006-05-29 | 2006-12-27 | 浙江大学 | Wet method combined process for desulfurization and denitration for chlorine-containing strong oxidizer absorption liquid |
| CA2762926A1 (en) * | 2009-06-17 | 2010-12-23 | Mitsubishi Heavy Industries, Ltd. | Mercury reduction system and mercury reduction method of flue gas containing mercury |
| KR20150081049A (en) * | 2014-01-03 | 2015-07-13 | 인하대학교 산학협력단 | Method for simultaneously eliminating of nitrogen oxide and sulfur oxide gas by electric precipitator |
| CN105169913A (en) * | 2015-08-16 | 2015-12-23 | 南京理工大学 | Chlorine dioxide oxidizing agent supply system for boiler flue gas denitration and technology thereof |
| CN106178899A (en) * | 2016-08-30 | 2016-12-07 | 山东格润内泽姆环保科技有限公司 | Compound dioxygen oxidation and denitration process and device |
| CN106731601A (en) * | 2016-12-22 | 2017-05-31 | 青岛大学 | A kind of solwution method flue gas desulfurization and denitrification integrated apparatus |
| CN206935094U (en) * | 2017-07-10 | 2018-01-30 | 云南澄江天辰磷肥有限公司 | A kind of SNCR equipment for denitrifying flue gas |
| CN107138038A (en) * | 2017-07-11 | 2017-09-08 | 毕伟新 | A kind of wet desulphurization denitration dust collecting integrated technique and device |
| CN108295634A (en) * | 2018-04-11 | 2018-07-20 | 江苏垦乐节能环保科技有限公司 | A kind of sintering flue gas high-efficiency desulfurization denitrating system and its implementation |
| CN108499343A (en) * | 2018-05-30 | 2018-09-07 | 南京优蓝环保科技有限公司 | A kind of coal-fired boiler tail gas integrated desulfurization, denitration, smoke harnessing system |
Non-Patent Citations (3)
| Title |
|---|
| 《火电厂烟气脱硫装置运行检修岗位培训教材》编委会编: "《火电厂烟气脱硫装置运行检修岗位培训教材》", 31 March 2012, 中国电力出版社 * |
| 段传和等编著: "《选择性非催化还原法 SNCR 烟气脱硝》", 31 January 2012, 中国电力出版社 * |
| 王潇: ""中小锅炉燃煤烟气脱硫脱硝一体化控制技术试验研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105311946A (en) | Flue gas denitration and desulfuration washing system and denitration and desulfuration method | |
| CN104258719A (en) | Desulfuration, denitration and dust removal (PM2.5 removal) three-in-one technical system for boiler exhaust gas by adopting ammonia method | |
| CN204710082U (en) | A kind of low-temperature denitration of flue gas system | |
| CN106166434A (en) | A kind of ozone oxidation double tower ammonia process of desulfurization denitrating technique and system thereof | |
| CN104399367A (en) | Smoke washing device with scaling-shaped hole plate | |
| CN110479077A (en) | A kind of ammonia process of desulfurization oxidation unit and method | |
| CN105148698A (en) | Boiler flue gas desulfurization and denitrification system | |
| CN206229197U (en) | One kind layering component single cycle spray desulphurization system | |
| CN205760545U (en) | Three circulating flue gas desulfurization tower or the systems for wet ammonia process desulfurizing | |
| CN205796943U (en) | Ozone oxidation double tower ammonia process of desulfurization denitrating system | |
| CN114849471A (en) | HTr-3SO combined denitration system applied to treatment of glass fiber kiln waste gas | |
| CN109647193A (en) | A kind of SCR denitration method and device of ammonia segmentation supply | |
| CN207287121U (en) | A kind of flue gas multi-stage spray desulphurization and denitration, dust removal integrated plant | |
| CN108261905A (en) | A kind of denitration integrated device and method | |
| CN106345288A (en) | Method and system for utilizing phosphoric ore pulp to treat sulfur-containing flue gas | |
| CN109331631A (en) | A kind of fire coal boiler fume high-efficiency desulfurization denitrification integrated device and its implementation | |
| CN209791261U (en) | Multi-stage purification tower for flue gas treatment | |
| CN204320092U (en) | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate | |
| CN110787609A (en) | Flue gas denitration device for tank furnace and denitration method thereof | |
| CN206965500U (en) | Fire coal boiler fume denitrating system | |
| CN205361029U (en) | Flue gas denitration desulfurization washing system | |
| CN201320448Y (en) | Double-pipeline dense and diluted liquid feed desulphurization device of large wet process | |
| CN108386858A (en) | A kind of smoke processing system of denitration desulfurization and dedusting | |
| CN201249101Y (en) | Two-stage parallel spray thionizer | |
| CN209287047U (en) | Equipment for denitrifying flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |
|
| RJ01 | Rejection of invention patent application after publication |