CN108525505A - A kind of cement clean manufacturing efficient combination desulfurization technology - Google Patents
A kind of cement clean manufacturing efficient combination desulfurization technology Download PDFInfo
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- CN108525505A CN108525505A CN201810659746.1A CN201810659746A CN108525505A CN 108525505 A CN108525505 A CN 108525505A CN 201810659746 A CN201810659746 A CN 201810659746A CN 108525505 A CN108525505 A CN 108525505A
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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
- B01D53/74—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
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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
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8609—Sulfur oxides
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Abstract
The present invention relates to a kind of cement clean manufacturing efficient combination desulfurization technologies, it includes solid desulfurating agent transport system, liquid desulfurizing agent transport system and desulphurization system, the solid desulfurating agent transport system includes solid desulfurating agent closed tank truck, solid desulfurating agent holding vessel, current stabilization screw(-type) feeder, metering screw batcher and elevator, the liquid conveying system includes liquid desulfurizing agent closed tank truck, liquid desulfurizing agent holding vessel, liquid conducting pipes and electromagnetic flowmeter, the desulphurization system includes level-one preheater, two level preheater, three-level preheater, level Four preheater, Pyatyi preheater and cement kiln；The present invention has the advantages that production cost is low, desulfurization rate is fast, desulfuration efficiency is high, does not generate secondary pollution, the feature of environmental protection is strong and realizes cement clean manufacturing.
Description
Technical field
The invention belongs to manufacture of cement technical field of desulfurization, and in particular to a kind of cement clean manufacturing efficient combination desulfurization
Technology.
Background technology
SO in cement industry flue gas2The sulfide and elemental sulfur being mainly derived from raw material and fuel, as country is to SO2
Discharge standard requires to be increasingly stringenter, many clinker manufacturing enterprise SO in China2Emission reduction tasks very severe, annual SO2Blowdown
Expense is up to millions of members, cement kiln SO2Emission control becomes a urgent task；The common desulfurization technology master in cement plant at present
If spray calcium, ammonia spray and wet desulphurization in cement kiln, however these desulfurization technologies are not thorough there are of high cost, desulfurization and ammonia
The problem of escape causes secondary pollution, therefore, urgent need offer one kind is at low cost, desulfurization rate is fast, desulfurization rate is high, does not generate two
The cement clean manufacturing of secondary pollution efficient combination desulfurization technology.
Invention content
The purpose of the invention is to overcome the deficiencies in the prior art, and provide a kind of using solid-liquid biphasic catalysis absorption side
Method depth absorbs the SO discharged in fixed cement kiln2, production cost is low, desulfurization rate is fast, desulfuration efficiency is high and does not generate secondary
The cement clean manufacturing of pollution efficient combination desulfurization technology.
The object of the present invention is achieved like this：A kind of cement clean manufacturing efficient combination desulfurization technology, it includes solid
Body desulfurizing agent transport system, liquid desulfurizing agent transport system and desulphurization system, the solid desulfurating agent transport system include solid
Body desulfurizing agent closed tank truck, solid desulfurating agent holding vessel, current stabilization screw(-type) feeder, metering screw batcher and elevator, it is described
The upper end of solid desulfurating agent holding vessel be provided with deduster, the lower part of the solid desulfurating agent holding vessel is provided with broken arch dress
It sets, the arch breaking apparatus is connected with plant area's compressed gas holding vessel, solid desulfurating agent storage by air shooter B
The lower end of tank is provided with manual gate, and current stabilization screw(-type) feeder, the current stabilization spiral shell are provided with below the manual gate
The lower section of rotation batcher outlet is provided with metering screw batcher, and meter is provided on the left of the upper end of the metering screw batcher
Amount claims, and the lower section of metering screw batcher outlet is provided with conveying skewed slot B, the lower section of the outlets conveying skewed slot B
Elevator is set, conveying skewed slot A is provided with below the lift outlet；
The liquid conveying system include liquid desulfurizing agent closed tank truck, liquid desulfurizing agent holding vessel, liquid conducting pipes and
Electromagnetic flowmeter, the top of the liquid desulfurizing agent holding vessel are connected by water pipe with plant area clear water holding vessel, the water
Electromagnetic flowmeter A is provided on pipe, the liquid desulfurizing agent holding vessel lower end is provided with weighing sensor, and the liquid is de-
Display is provided on the tank body of sulphur agent holding vessel, the weighing sensor and display are electrically connected, and the liquid is de-
The lower part of sulphur agent holding vessel is connected with liquid conducting pipes B, liquid conducting pipes C and blow-off line, the liquid delivery tube
It is provided with corrosion protection pump on road C, liquid delivery branch pipe is connected on the right side of the liquid conducting pipes C and return duct junction
Road A and liquid delivery branch pipeline B, the liquid delivery branch pipeline A pass through return duct and liquid desulfurizing agent holding vessel phase
Even, plant area's compressed gas holding vessel is crossed the right side of junction by air shooter A and liquid delivery branch pipeline A
It is connected with spray gun.Plant area's compressed gas holding vessel is connected by air shooter A with liquid delivery branch pipeline A,
Spray gun is connected on the right side of the liquid delivery branch pipeline A, the spray gun is located at air shooter A and liquid conveying branch
The right side of the road junctions pipeline A；
The desulphurization system includes level-one preheater, two level preheater, three-level preheater, level Four preheater, Pyatyi preheater
And cement kiln, the level-one preheater, two level preheater, three-level preheater, level Four preheater and Pyatyi preheater lower part
It is both provided with valve, the level Four preheater and Pyatyi preheater are connected by pipeline with cement kiln lower wall, the water
The upper end of stall is connected by pipeline with the upper side wall of Pyatyi preheater.
The solid desulfurating agent is the calcium base complex that the oxide based on calcium based component is mixed and processed.
The liquid desulfurizing agent is made of the oxidant containing catalytically fixed sulphur and catalyst.
The spray gun is arranged on the gas approach of level-one preheater.
It is provided with electromagnetic flowmeter B on the liquid delivery branch pipeline A.
Level-one preheater, two level preheater, three-level preheater, level Four preheater and the Pyatyi preheater is whirlwind
Preheater.
The deduster is sack cleaner.
The sulfur removal technology includes the following steps：
1）Solid desulfurating agent is delivered to solid desulfurating agent storage by solid desulfurating agent closed tank truck by solid desulfurating agent delivery pump
In tank, the arch breaking apparatus of the lower part of solid desulfurating agent holding vessel setting is connected with plant area compressed gas holding vessel, and compressed gas is led to
It crosses arch breaking apparatus and sprays into gas into solid desulfurating agent holding vessel, prevent occurring knot doming effect in solid desulfurating agent holding vessel；It beats
Manual gate is opened, solid desulfurating agent is successively flowed into current stabilization screw(-type) feeder and metering screw batcher, passes through current stabilization spiral
Batcher efficiently solves the problems, such as that the slug of solid desulfurating agent, the weighing balance on metering screw batcher write down solid desulfurating agent
Weight, for weighing balance in such a way that suspension is weighed, which is the direct transmission of power rather than indirect transfer, measuring accuracy
It is high；Solid desulfurating agent is entered by the outlet of metering screw batcher in the conveying skewed slot B equipped with cement slurry, solid desulfurization
It is delivered in conveying skewed slot A by elevator after agent and cement slurry mixing；
2）Liquid desulfurizing agent is delivered to the storage of liquid desulfurizing agent by liquid desulfurizing agent closed tank truck by liquid desulfurizing agent delivery pump
In tank, liquid desulfurizing agent is concentrated type product, and the weight of liquid desulfurizing agent is recorded by weighing sensor and display, passes through water
Pipe injected clear water into liquid desulfurizing agent holding vessel, the volume of clear water, clear water and liquid are write down by the electromagnetic flowmeter A on water pipe
The weight ratio of body desulfurizing agent is 1:1；Liquid desulfurizing agent after dilution is delivered to liquid delivery branch pipe by liquid conducting pipes C
The flow of liquid desulfurizing agent after road A, electromagnetic flowmeter B record dilution, liquid desulfurizing agent in liquid delivery branch pipeline A with
Compressed gas in air shooter A is delivered to after collecting in spray gun；When flow is more than setting value, liquid delivery branch is opened
Valve on pipeline B, liquid desulfurizing agent are flowed back to through return duct in fluid flowmeter holding vessel, the use of liquid with precise control desulfurizing agent
Amount；The lower part of liquid desulfurizing agent holding vessel is connected with liquid conducting pipes B and blow-off line, and liquid will be deposited in by blow-off line
The sundries of body desulfurizing agent is discharged, and is delivered to lower liquid desulfurizing agent through liquid desulfurizing agent delivery pump by liquid conducting pipes B
The top of liquid desulfurizing agent holding vessel prevents occurring the non-uniform phenomenon of liquid desulfurization dilution agent in liquid desulfurizing agent holding vessel；
3）Step 1）With step 2）It is carried out at the same time, step 1）Mixed solid desulfurating agent and cement slurry enters through conveying skewed slot A
To two level preheater exit, then it is transported in level-one preheater with air-flow；Solid desulfurating agent in level-one preheater and
Cement slurry is transported to three-level preheater exit, is then transported in two level preheater with air-flow；In two level preheater
Solid desulfurating agent and cement slurry be transported to level Four preheater exit, be then transported to three-level preheater with air-flow
It is interior；Solid desulfurating agent and cement slurry in three-level preheater are transported to Pyatyi preheater exit, then defeated with air-flow
It send to level Four preheater, the solid desulfurating agent and cement slurry in level Four preheater are transported in cement kiln, in cement kiln
The SO of generation2Gas is entered from the top of cement kiln in Pyatyi preheater, is then successively preheated by level Four preheater, three-level
Device, two level preheater and level-one preheater, spray gun, step 2 are provided on the gas approach of level-one preheater）Liquid after dilution
Body desulfurizing agent is atomized into fine drop by spray gun and compressed air and sprays into flue, entrance of the liquid desulfurizing agent in level-one preheater
SO in flue and in level-one preheater and in flue gas2Desulfurization reaction occurs for gas, and flue gas is finally discharged out of level-one preheater,
The gas of discharge is transported to through wind turbine in dust-extraction unit.
Desulphurization mechanism is as follows：
(1)SO2Oxidation process：Under the action of liquid desulfurizing agent, SO in flue gas2It is quickly generated SO3, significantly improve SOXReaction
Activity and desulfurization reaction rate.
(2) smoke catalytic sweetening process：SO in flue gasXUnder the effect of liquid desulfurizing agent, generation is reacted with calcium agent sulphur-fixing agent
Calcium sulfate complex salt, the compound salt-stable is strong, decomposition temperature is high, is heated and does not decompose under high temperature.
(3) high-temperature fixed sulfur process：It is burnt into the stage in cement kiln, calcium sulfate complex salt and calcium oxide, aluminium oxide, the oxygen of production
Change iron etc. solid phase reaction occurs, generates clinker mineral, realize that high temperature determines sulphur, avoids SO2Secondary release.
Beneficial effects of the present invention：The invention discloses a kind of cement clean manufacturing efficient combination desulfurization technology, solids
The top of desulfurizing agent holding vessel is provided with sack cleaner, prevents the process of filling solid desulfurating agent in solid desulfurating agent holding vessel
In there is the phenomenon that airborne dust；The arch breaking apparatus and plant area's compressed gas holding vessel phase of the lower part setting of solid desulfurating agent holding vessel
Even, compressed gas sprays into gas into solid desulfurating agent holding vessel by arch breaking apparatus, prevents from going out in solid desulfurating agent holding vessel
Now tie doming effect；Solid desulfurating agent first passes through the slug that current stabilization screw(-type) feeder solves the problems, such as solid desulfurating agent, then passes through meter
The weight for measuring screw(-type) feeder metering of solids desulfurizing agent, outlet of the solid desulfurating agent through metering screw batcher after metering enter
Into conveying skewed slot B, after being mixed in conveying skewed slot B equipped with cement slurry, solid desulfurating agent and cement slurry in conveying skewed slot B
It is delivered in conveying skewed slot A by elevator, then enters two level preheater exit by the outlet of conveying skewed slot A, so
It is transported to level-one preheater with air-flow afterwards, is then sequentially entered in two level preheater, three-level preheater and level Four preheater,
It is finally transported in cement kiln, the SO generated in cement kiln2Gas is entered from the top of cement kiln in Pyatyi preheater, so
Successively pass through level Four preheater, three-level preheater, two level preheater and level-one preheater afterwards, in the gas approach of level-one preheater
On be provided with spray gun, the liquid desulfurizing agent after dilution by spray gun and compressed air be atomized into fine drop spray into flue in, liquid
Desulfurizing agent in the gas approach of level-one preheater and in level-one preheater with the SO in flue gas2Desulfurization reaction occurs for gas, carries
High desulfurization efficiency and rate；Flue gas is finally discharged out of level-one preheater, and the gas of discharge is transported to dedusting dress through wind turbine
In setting；Solid desulfurating agent and liquid desulfurizing agent are filled to production equipment, using solid-liquid biphasic catalysis adsorption method, in desulfurization
During by being used in combination solid desulfurating agent and liquid desulfurizing agent, depth, which absorbs, discharges in fixed cement production process
SO2Gas, high temperature determine sulphur, avoid SO2Secondary release, pass through SO in the flue gas that is discharged after this combination desulfurization technology2Concentration is low
10ppm realizes SO2Near-zero release, the clean manufacturing for meeting environmentally friendly needs, realizing cement；Total, the present invention, which has, to be produced into
This is low, desulfurization rate is fast, desulfuration efficiency is high, does not generate secondary pollution, the advantages of feature of environmental protection is strong and realizes cement clean manufacturing.
Description of the drawings
Fig. 1 is a kind of flow chart of cement clean manufacturing efficient combination desulfurization technology of the present invention.
In figure：1, liquid desulfurizing agent closed tank truck 2, liquid desulfurizing agent delivery pump 3, valve 4, liquid conducting pipes A
5, liquid desulfurizing agent holding vessel 6, water pipe 7, return duct 8, display screen 9, liquid conducting pipes B 10, plant area's clear water holding vessel
11, weighing sensor 12, electromagnetic flowmeter A 13, blow-off line 14, liquid conducting pipes C 15, corrosion protection pump 16, liquid are defeated
Send bypass line A 17, electromagnetic flowmeter B 18, liquid delivery branch pipeline B 19, valve 20, Pyatyi preheater 21, three-level
Preheater 22, level-one preheater 23, air shooter A 24, plant area's compressed gas holding vessel 25, wind turbine 26, gas conveying
Pipe B 27, conveying skewed slot A 28, elevator 29, spray gun 30, two level preheater 31, level Four preheater 32, cement kiln 33,
Convey skewed slot B 34, metering screw batcher 35, weighing balance 36, current stabilization screw(-type) feeder 37, solid desulfurating agent closed tank truck
38, solid desulfurating agent delivery pump 39, Solid Conveying and Melting pipeline 40, solid desulfurating agent holding vessel 41, deduster 42, arch breaking apparatus
43, manual gate.
Specific implementation mode
Embodiment 1
As shown in Figure 1, a kind of cement clean manufacturing efficient combination desulfurization technology, it includes solid desulfurating agent transport system, liquid
Body desulfurizing agent transport system and desulphurization system, the solid desulfurating agent transport system include solid desulfurating agent closed tank truck 37,
Solid desulfurating agent holding vessel 40, current stabilization screw(-type) feeder 36, metering screw batcher 34 and elevator 28, the solid desulfurization
The upper end of agent holding vessel 40 is provided with deduster 41, and the lower part of the solid desulfurating agent holding vessel 40 is provided with arch breaking apparatus
42, the arch breaking apparatus 42 is connected with plant area's compressed gas holding vessel 24, the solid desulfurization by air shooter B26
The lower end of agent holding vessel 40 is provided with manual gate 43, and the lower section of the manual gate 43 is provided with current stabilization screw(-type) feeder
36, the lower section of the current stabilization screw(-type) feeder 36 outlet is provided with metering screw batcher 34, metering screw feed
Weighing balance 35 is provided on the left of the upper end of machine 34, the lower section of the metering screw batcher 34 outlet is provided with conveying skewed slot
Elevator 28 is arranged in the lower section of B33, the outlets conveying skewed slot B33, and the lower section that the elevator 28 exports is provided with defeated
Send skewed slot A27；
The liquid conveying system includes liquid desulfurizing agent closed tank truck 1, liquid desulfurizing agent holding vessel 5, liquid conducting pipes
And electromagnetic flowmeter, the top of the liquid desulfurizing agent holding vessel 5 are connected by water pipe 6 with plant area clear water holding vessel 10, institute
Electromagnetic flowmeter A12 is provided on the water pipe 6 stated, 5 lower end of liquid desulfurizing agent holding vessel is provided with weighing sensor 11,
Display 8 is provided on the tank body of the liquid desulfurizing agent holding vessel 5, the weighing sensor 11 and display 8 are electrical
Connection, the lower part of the liquid desulfurizing agent holding vessel 5 is connected with liquid conducting pipes B9, liquid conducting pipes C14 and blowdown
Pipeline 13, corrosion protection pump 15 is provided on the liquid conducting pipes C14, and the liquid conducting pipes C14 connects with return duct 7
Liquid delivery branch pipeline A16 and liquid delivery branch pipeline B18, the liquid delivery branch pipe are connected on the right side of the place of connecing
Road A16 is connected by return duct 7 with liquid desulfurizing agent holding vessel 5, and plant area's compressed gas holding vessel 24 is defeated by gas
It send pipe A23 to be connected with liquid delivery branch pipeline A16, spray gun is connected on the right side of the liquid delivery branch pipeline A16
29, the spray gun 29 is located at the right side of air shooter A23 and the junctions liquid delivery branch pipeline A16；
The desulphurization system includes level-one preheater 22, two level preheater 30, three-level preheater 21, level Four preheater 31, five
Grade preheater 20 and cement kiln 32, the level-one preheater 22, two level preheater 30, three-level preheater 21, level Four preheater
31 and the lower part of Pyatyi preheater 20 be both provided with valve 19, the level Four preheater 31 and Pyatyi preheater 20 pass through pipeline
It is connected with 32 lower wall of cement kiln, the upper end of the cement kiln 32 is connected by pipeline with the upper side wall of Pyatyi preheater 20.
The sulfur removal technology includes the following steps：
1）Solid desulfurating agent is delivered to solid desulfurating agent by solid desulfurating agent closed tank truck 37 by solid desulfurating agent delivery pump 38
In holding vessel 40, the arch breaking apparatus 42 of the lower part of solid desulfurating agent holding vessel 40 setting and 24 phase of plant area compressed gas holding vessel
Even, compressed gas sprays into gas into solid desulfurating agent holding vessel 40 by arch breaking apparatus 42, opens manual gate 43, and solid is de-
Sulphur agent is successively flowed into current stabilization screw(-type) feeder 36 and metering screw batcher 34, the weighing balance on metering screw batcher 34
35 write down the weight of solid desulfurating agent, and solid desulfurating agent is entered by the outlet of metering screw batcher 34 equipped with cement slurry
Conveying skewed slot B33 in, be delivered in conveying skewed slot A27 by elevator 28 after solid desulfurating agent and cement slurry mixing；
2）Liquid desulfurizing agent is delivered to the storage of liquid desulfurizing agent by liquid desulfurizing agent closed tank truck 1 by liquid desulfurizing agent delivery pump 2
It deposits in tank 5, liquid desulfurizing agent is concentrated type product, and the weight of liquid desulfurizing agent is recorded by weighing sensor 11 and display 8,
By water pipe 6 into liquid desulfurizing agent holding vessel 5 injected clear water, the body of clear water is write down by the electromagnetic flowmeter A12 on water pipe 6
The weight ratio of product, clear water and liquid desulfurizing agent is 1:1, the liquid desulfurizing agent after dilution is delivered to by liquid conducting pipes C14
Liquid desulfurizing agent in liquid delivery branch pipeline A16, liquid delivery branch pipeline A16 and the compression in air shooter A23
It is delivered to after gas collection in spray gun 29；
3）Step 1）With step 2）It is carried out at the same time, step 1）Mixed solid desulfurating agent and cement slurry through convey skewed slot A27 into
Enter to 30 exit of two level preheater, is then transported in level-one preheater 22 with air-flow；Solid in level-one preheater 22
Desulfurizing agent and cement slurry are transported to 21 exit of three-level preheater, are then transported in two level preheater 30 with air-flow；
Solid desulfurating agent and cement slurry in two level preheater 30 are transported to 31 exit of level Four preheater, then defeated with air-flow
It send to three-level preheater 21；Solid desulfurating agent and cement slurry in three-level preheater 21 are transported to Pyatyi preheater 20 and go out
At mouthful, then it is transported in level Four preheater 31 with air-flow, the solid desulfurating agent in level Four preheater 31 and cement slurry quilt
It is delivered in cement kiln 32, the SO generated in cement kiln 322Gas is entered from the top of cement kiln 32 in Pyatyi preheater 20,
Then successively pass through level Four preheater 31, three-level preheater 21, two level preheater 30 and level-one preheater 22, in level-one preheater
Spray gun 29, step 2 are provided on 22 gas approach）Liquid desulfurizing agent after dilution is atomized into carefully by spray gun 29 and compressed air
Droplet sprays into flue, and liquid desulfurizing agent is in the gas approach of level-one preheater 22 and in level-one preheater 22 and in flue gas
SO2Desulfurization reaction occurs for gas, and finally discharge, the gas of discharge are transported to flue gas through wind turbine 25 out of level-one preheater 22
In dust-extraction unit.
The invention discloses a kind of cement clean manufacturing efficient combination desulfurization technology, the tops of solid desulfurating agent holding vessel
It is provided with sack cleaner, prevents the phenomenon that airborne dust occur during filling solid desulfurating agent in solid desulfurating agent holding vessel；
The arch breaking apparatus of the lower part setting of solid desulfurating agent holding vessel is connected with plant area compressed gas holding vessel, and compressed gas passes through broken arch
Device sprays into gas into solid desulfurating agent holding vessel, prevents occurring knot doming effect in solid desulfurating agent holding vessel；Solid desulfurization
Agent first passes through the slug that current stabilization screw(-type) feeder solves the problems, such as solid desulfurating agent, then passes through metering screw batcher metering of solids
The weight of desulfurizing agent, outlet of the solid desulfurating agent through metering screw batcher after metering enter in conveying skewed slot A, and conveying is oblique
Conveying is delivered to by elevator after being mixed in conveying skewed slot A equipped with cement slurry, solid desulfurating agent and cement slurry in slot A
In skewed slot B, two level preheater exit then is entered by the outlet of conveying skewed slot B, is then transported to level-one with air-flow
Preheater then sequentially enters in two level preheater, three-level preheater and level Four preheater, is finally transported to cement kiln
In, the SO2 gases generated in cement kiln are entered from the top of cement kiln in Pyatyi preheater, are then successively preheated by level Four
Device, three-level preheater, two level preheater and level-one preheater are provided with spray gun on the gas approach of level-one preheater, dilution
Liquid desulfurizing agent afterwards is atomized into fine drop by spray gun and compressed air and sprays into flue, and liquid desulfurizing agent is in level-one preheater
Gas approach in and level-one preheater in flue gas in SO2Desulfurization reaction occurs for gas, improves desulfurization efficiency and rate；
Flue gas is finally discharged out of level-one preheater, and the gas of discharge is transported to through wind turbine in dust-extraction unit.
Embodiment 2
As shown in Figure 1, a kind of cement clean manufacturing efficient combination desulfurization technology, it includes solid desulfurating agent transport system, liquid
Body desulfurizing agent transport system and desulphurization system, the solid desulfurating agent transport system include solid desulfurating agent closed tank truck 37,
Solid desulfurating agent holding vessel 40, current stabilization screw(-type) feeder 36, metering screw batcher 34 and elevator 28, the solid desulfurization
The upper end of agent holding vessel 40 is provided with deduster 41, and the lower part of the solid desulfurating agent holding vessel 40 is provided with arch breaking apparatus
42, the arch breaking apparatus 42 is connected with plant area's compressed gas holding vessel 24, the solid desulfurization by air shooter B26
The lower end of agent holding vessel 40 is provided with manual gate 43, and the lower section of the manual gate 43 is provided with current stabilization screw(-type) feeder
36, the lower section of the current stabilization screw(-type) feeder 36 outlet is provided with metering screw batcher 34, metering screw feed
Weighing balance 35 is provided on the left of the upper end of machine 34, the lower section of the metering screw batcher 34 outlet is provided with conveying skewed slot
Elevator 28 is arranged in the lower section of B33, the outlets conveying skewed slot B33, and the lower section that the elevator 28 exports is provided with defeated
Send skewed slot A27；
The liquid conveying system includes liquid desulfurizing agent closed tank truck 1, liquid desulfurizing agent holding vessel 5, liquid conducting pipes
And electromagnetic flowmeter, the top of the liquid desulfurizing agent holding vessel 5 are connected by water pipe 6 with plant area clear water holding vessel 10, institute
Electromagnetic flowmeter A12 is provided on the water pipe 6 stated, 5 lower end of liquid desulfurizing agent holding vessel is provided with weighing sensor 11,
Display 8 is provided on the tank body of the liquid desulfurizing agent holding vessel 5, the weighing sensor 11 and display 8 are electrical
Connection, the lower part of the liquid desulfurizing agent holding vessel 5 is connected with liquid conducting pipes B9, liquid conducting pipes C14 and blowdown
Pipeline 13, corrosion protection pump 15 is provided on the liquid conducting pipes C14, and the liquid conducting pipes C14 connects with return duct 7
Liquid delivery branch pipeline A16 and liquid delivery branch pipeline B18, the liquid delivery branch pipe are connected on the right side of the place of connecing
Road A16 is connected by return duct 7 with liquid desulfurizing agent holding vessel 5, and plant area's compressed gas holding vessel 24 is defeated by gas
It send pipe A23 to be connected with liquid delivery branch pipeline A16, spray gun is connected on the right side of the liquid delivery branch pipeline A16
29, the spray gun 29 is located at the right side of air shooter A23 and the junctions liquid delivery branch pipeline A16；
The desulphurization system includes level-one preheater 22, two level preheater 30, three-level preheater 21, level Four preheater 31, five
Grade preheater 20 and cement kiln 32, the level-one preheater 22, two level preheater 30, three-level preheater 21, level Four preheater
31 and the lower part of Pyatyi preheater 20 be both provided with valve 19, the level Four preheater 31 and Pyatyi preheater 20 pass through pipeline
It is connected with 32 lower wall of cement kiln, the upper end of the cement kiln 32 is connected by pipeline with the upper side wall of Pyatyi preheater 20.
The solid desulfurating agent is the calcium base complex that the oxide based on calcium based component is mixed and processed.
The liquid desulfurizing agent is made of the oxidant containing catalytically fixed sulphur and catalyst.
The spray gun 29 is arranged on the gas approach of level-one preheater 22.
It is provided with electromagnetic flowmeter B17 on the liquid delivery branch pipeline A16.
Level-one preheater 22, two level preheater 30, three-level preheater 21, level Four preheater 31 and the Pyatyi preheater
20 be cyclone preheater.
The deduster 41 is sack cleaner.
The sulfur removal technology includes the following steps：
1）Solid desulfurating agent is delivered to solid desulfurating agent by solid desulfurating agent closed tank truck 37 by solid desulfurating agent delivery pump 38
In holding vessel 40, the arch breaking apparatus 42 of the lower part of solid desulfurating agent holding vessel 40 setting and 24 phase of plant area compressed gas holding vessel
Even, compressed gas sprays into gas into solid desulfurating agent holding vessel 40 by arch breaking apparatus 42, opens manual gate 43, and solid is de-
Sulphur agent is successively flowed into current stabilization screw(-type) feeder 36 and metering screw batcher 34, the weighing balance on metering screw batcher 34
35 write down the weight of solid desulfurating agent, and solid desulfurating agent is entered by the outlet of metering screw batcher 34 equipped with cement slurry
Conveying skewed slot B33 in, be delivered in conveying skewed slot A27 by elevator 28 after solid desulfurating agent and cement slurry mixing；
2）Liquid desulfurizing agent is delivered to the storage of liquid desulfurizing agent by liquid desulfurizing agent closed tank truck 1 by liquid desulfurizing agent delivery pump 2
It deposits in tank 5, liquid desulfurizing agent is concentrated type product, and the weight of liquid desulfurizing agent is recorded by weighing sensor 11 and display 8,
By water pipe 6 into liquid desulfurizing agent holding vessel 5 injected clear water, the body of clear water is write down by the electromagnetic flowmeter A12 on water pipe 6
The weight ratio of product, clear water and liquid desulfurizing agent is 1:1, the liquid desulfurizing agent after dilution is delivered to by liquid conducting pipes C14
Liquid desulfurizing agent in liquid delivery branch pipeline A16, liquid delivery branch pipeline A16 and the compression in air shooter A23
It is delivered to after gas collection in spray gun 29；
3）Step 1）With step 2）It is carried out at the same time, step 1）Mixed solid desulfurating agent and cement slurry through convey skewed slot A27 into
Enter to 30 exit of two level preheater, is then transported in level-one preheater 22 with air-flow；Solid in level-one preheater 22
Desulfurizing agent and cement slurry are transported to 21 exit of three-level preheater, are then transported in two level preheater 30 with air-flow；
Solid desulfurating agent and cement slurry in two level preheater 30 are transported to 31 exit of level Four preheater, then defeated with air-flow
It send to three-level preheater 21；Solid desulfurating agent and cement slurry in three-level preheater 21 are transported to Pyatyi preheater 20 and go out
At mouthful, then it is transported in level Four preheater 31 with air-flow, the solid desulfurating agent in level Four preheater 31 and cement slurry quilt
It is delivered in cement kiln 32, the SO generated in cement kiln 322Gas is entered from the top of cement kiln 32 in Pyatyi preheater 20,
Then successively pass through level Four preheater 31, three-level preheater 21, two level preheater 30 and level-one preheater 22, in level-one preheater
Spray gun 29, step 2 are provided on 22 gas approach）Liquid desulfurizing agent after dilution is atomized into carefully by spray gun 29 and compressed air
Droplet sprays into flue, and liquid desulfurizing agent is in the gas approach of level-one preheater 22 and in level-one preheater 22 and in flue gas
SO2Desulfurization reaction occurs for gas, and finally discharge, the gas of discharge are transported to flue gas through wind turbine 25 out of level-one preheater 22
In dust-extraction unit.
The invention discloses a kind of cement clean manufacturing efficient combination desulfurization technology, the tops of solid desulfurating agent holding vessel
It is provided with sack cleaner, prevents the phenomenon that airborne dust occur during filling solid desulfurating agent in solid desulfurating agent holding vessel；
The arch breaking apparatus of the lower part setting of solid desulfurating agent holding vessel is connected with plant area compressed gas holding vessel, and compressed gas passes through broken arch
Device sprays into gas into solid desulfurating agent holding vessel, prevents occurring knot doming effect in solid desulfurating agent holding vessel；Solid desulfurization
Agent first passes through the slug that current stabilization screw(-type) feeder solves the problems, such as solid desulfurating agent, then passes through metering screw batcher metering of solids
The weight of desulfurizing agent, outlet of the solid desulfurating agent through metering screw batcher after metering enter in conveying skewed slot A, and conveying is oblique
Conveying is delivered to by elevator after being mixed in conveying skewed slot A equipped with cement slurry, solid desulfurating agent and cement slurry in slot A
In skewed slot B, two level preheater exit then is entered by the outlet of conveying skewed slot B, is then transported to level-one with air-flow
Preheater then sequentially enters in two level preheater, three-level preheater and level Four preheater, is finally transported to cement kiln
In, the SO2 gases generated in cement kiln are entered from the top of cement kiln in Pyatyi preheater, are then successively preheated by level Four
Device, three-level preheater, two level preheater and level-one preheater are provided with spray gun on the gas approach of level-one preheater, dilution
Liquid desulfurizing agent afterwards is atomized into fine drop by spray gun and compressed air and sprays into flue, and liquid desulfurizing agent is in level-one preheater
Gas approach in and level-one preheater in flue gas in SO2Desulfurization reaction occurs for gas, improves desulfurization efficiency and rate；
Flue gas is finally discharged out of level-one preheater, and the gas of discharge is transported to through wind turbine in dust-extraction unit；By solid desulfurating agent and
Liquid desulfurizing agent is filled to production equipment, using solid-liquid biphasic catalysis adsorption method, is made by combining during desulfurization
With solid desulfurating agent and liquid desulfurizing agent, depth absorbs the SO discharged in fixed cement production process2Gas, high temperature are determined sulphur, are kept away
Exempt from SO2Secondary release, pass through SO in the flue gas that is discharged after this combination desulfurization technology2The low 10ppm of concentration realizes SO2Nearly zero
Discharge, the clean manufacturing for meeting environmentally friendly needs, realizing cement；Total, the present invention is with production cost is low, desulfurization rate is fast, de-
Sulphur efficiency is high, does not generate secondary pollution, the advantages of feature of environmental protection is strong and realizes cement clean manufacturing.
Claims (8)
1. a kind of cement clean manufacturing efficient combination desulfurization technology, it includes solid desulfurating agent transport system, liquid desulfurizing agent
Transport system and desulphurization system, it is characterised in that：The solid desulfurating agent transport system include solid desulfurating agent closed tank truck,
Solid desulfurating agent holding vessel, current stabilization screw(-type) feeder, metering screw batcher and elevator, the solid desulfurating agent holding vessel
Upper end be provided with deduster, the lower part of the solid desulfurating agent holding vessel is provided with arch breaking apparatus, the arch breaking apparatus
It is connected with plant area's compressed gas holding vessel by air shooter B, the lower end of the solid desulfurating agent holding vessel is provided with hand
Flashboard is moved, current stabilization screw(-type) feeder is provided with below the manual gate, under current stabilization screw(-type) feeder outlet
Side is provided with metering screw batcher, and weighing balance, the metering are provided on the left of the upper end of the metering screw batcher
The lower section of screw(-type) feeder outlet is provided with conveying skewed slot B, and elevator is arranged in the lower section of the outlets conveying skewed slot B, described
Lift outlet below be provided with conveying skewed slot A；
The liquid conveying system include liquid desulfurizing agent closed tank truck, liquid desulfurizing agent holding vessel, liquid conducting pipes and
Electromagnetic flowmeter, the top of the liquid desulfurizing agent holding vessel are connected by water pipe with plant area clear water holding vessel, the water
Electromagnetic flowmeter A is provided on pipe, the liquid desulfurizing agent holding vessel lower end is provided with weighing sensor, and the liquid is de-
Display is provided on the tank body of sulphur agent holding vessel, the weighing sensor and display are electrically connected, and the liquid is de-
The lower part of sulphur agent holding vessel is connected with liquid conducting pipes B, liquid conducting pipes C and blow-off line, the liquid delivery tube
It is provided with corrosion protection pump on road C, liquid delivery branch pipe is connected on the right side of the liquid conducting pipes C and return duct junction
Road A and liquid delivery branch pipeline B, the liquid delivery branch pipeline A pass through return duct and liquid desulfurizing agent holding vessel phase
Even, plant area's compressed gas holding vessel is connected by air shooter A with liquid delivery branch pipeline A, the liquid
It is connected with spray gun on the right side of body conveying bypass line A, the spray gun is located at air shooter A and liquid delivery branch pipeline A
The right side of junction；
The desulphurization system includes level-one preheater, two level preheater, three-level preheater, level Four preheater, Pyatyi preheater
And cement kiln, the level-one preheater, two level preheater, three-level preheater, level Four preheater and Pyatyi preheater lower part
It is both provided with valve, the level Four preheater and Pyatyi preheater are connected by pipeline with cement kiln lower wall, the water
The upper end of stall is connected by pipeline with the upper side wall of Pyatyi preheater.
2. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：Described consolidates
Body desulfurizing agent is the calcium base complex that the oxide based on calcium based component is mixed and processed.
3. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：The liquid
Body desulfurizing agent is made of the oxidant containing catalytically fixed sulphur and catalyst.
4. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：The spray
Rifle is arranged on the gas approach of level-one preheater.
5. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：The liquid
It is provided with electromagnetic flowmeter B on body conveying bypass line A.
6. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：Described one
Grade preheater, two level preheater, three-level preheater, level Four preheater and Pyatyi preheater are cyclone preheater.
7. a kind of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, it is characterised in that：Described removes
Dirt device is sack cleaner.
8. a kind of sulfur removal technology of cement clean manufacturing efficient combination desulfurization technology as described in claim 1, feature exist
In：The sulfur removal technology includes the following steps：
Solid desulfurating agent is delivered to solid desulfurating agent holding vessel by solid desulfurating agent closed tank truck by solid desulfurating agent delivery pump
Interior, the arch breaking apparatus of the lower part of solid desulfurating agent holding vessel setting is connected with plant area compressed gas holding vessel, and compressed gas passes through
Arch breaking apparatus sprays into gas into solid desulfurating agent holding vessel；Manual gate is opened, solid desulfurating agent is successively flowed into current stabilization spiral shell
It revolves in batcher and metering screw batcher, the weighing balance on metering screw batcher writes down the weight of solid desulfurating agent；Solid
Desulfurizing agent is entered by the outlet of metering screw batcher in the conveying skewed slot B equipped with cement slurry, solid desulfurating agent and water
It is delivered in conveying skewed slot A by elevator after the mixing of mud raw material；
Liquid desulfurizing agent is delivered to liquid desulfurizing agent holding vessel by liquid desulfurizing agent closed tank truck by liquid desulfurizing agent delivery pump
It is interior, by water pipe into liquid desulfurizing agent holding vessel injected clear water, the weight ratio of clear water and liquid desulfurizing agent is 1:1；After dilution
Liquid desulfurizing agent liquid delivery branch pipeline A, the liquid in liquid delivery branch pipeline A are delivered to by liquid conducting pipes C
Body desulfurizing agent is delivered to after collecting with the compressed gas in air shooter A in spray gun；
Step 1）With step 2）It is carried out at the same time, step 1）Mixed solid desulfurating agent and cement slurry is entered through conveying skewed slot B
Two level preheater exit, is then transported to air-flow in level-one preheater；Solid desulfurating agent in level-one preheater and water
Mud raw material are transported to three-level preheater exit, are then transported in two level preheater with air-flow；In two level preheater
Solid desulfurating agent and cement slurry are transported to level Four preheater exit, are then transported in three-level preheater with air-flow；
Solid desulfurating agent and cement slurry in three-level preheater are transported to Pyatyi preheater exit, are then transported to air-flow
In level Four preheater, solid desulfurating agent and cement slurry in level Four preheater are transported in cement kiln, are generated in cement kiln
SO2Gas is entered from the top of cement kiln in Pyatyi preheater, then successively by level Four preheater, three-level preheater,
Two level preheater and level-one preheater, spray gun, step 2 are provided on the gas approach of level-one preheater）Liquid after dilution
Desulfurizing agent is atomized into fine drop by spray gun and compressed air and sprays into flue, entrance cigarette of the liquid desulfurizing agent in level-one preheater
SO in road and in level-one preheater and in flue gas2Desulfurization reaction occurs for gas, and flue gas is finally discharged out of level-one preheater, arranges
The gas gone out is transported to through wind turbine in dust-extraction unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821395A (en) * | 2019-01-07 | 2019-05-31 | 长兴中元氢氧化钙有限公司 | A kind of calcium-based ammonia-free composite desulfurization device for dry-process cement production line and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69124496D1 (en) * | 1990-11-28 | 1997-03-13 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurization device |
| US5820831A (en) * | 1994-06-09 | 1998-10-13 | Abb Environmental Systems, Div. Of Abb Flakt, Inc. | Method and apparatus for preparing calcium carbonate for scrubbing sulfur oxides from combustion effluents |
| CN1356922A (en) * | 1999-06-18 | 2002-07-03 | 弗·尔·斯米德恩公司 | Method and appts. for desulphurisation of exhaust gases |
| CN105585263A (en) * | 2015-12-23 | 2016-05-18 | 中国建筑材料科学研究总院 | Preparation method of cement clinker |
| CN206372687U (en) * | 2016-11-17 | 2017-08-04 | 孙家澍 | The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined |
| CN107930376A (en) * | 2017-11-27 | 2018-04-20 | 浙江工业大学 | The cement kiln desulfurizer and technique of a kind of dry-and-wet combined |
-
2018
- 2018-06-25 CN CN201810659746.1A patent/CN108525505A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69124496D1 (en) * | 1990-11-28 | 1997-03-13 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurization device |
| US5820831A (en) * | 1994-06-09 | 1998-10-13 | Abb Environmental Systems, Div. Of Abb Flakt, Inc. | Method and apparatus for preparing calcium carbonate for scrubbing sulfur oxides from combustion effluents |
| CN1356922A (en) * | 1999-06-18 | 2002-07-03 | 弗·尔·斯米德恩公司 | Method and appts. for desulphurisation of exhaust gases |
| CN105585263A (en) * | 2015-12-23 | 2016-05-18 | 中国建筑材料科学研究总院 | Preparation method of cement clinker |
| CN206372687U (en) * | 2016-11-17 | 2017-08-04 | 孙家澍 | The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined |
| CN107930376A (en) * | 2017-11-27 | 2018-04-20 | 浙江工业大学 | The cement kiln desulfurizer and technique of a kind of dry-and-wet combined |
Non-Patent Citations (3)
| Title |
|---|
| 中国环境科学学会: "《中国环境科学学会学术年会论文集 2010 第2卷》", 31 August 2010, 中国环境科学出版社 * |
| 刘龙等: "《水泥工厂实用新技术 立窑篇》", 31 January 2000, 武汉工业大学出版社 * |
| 马艳宁等: "《SDA脱硫除尘工艺技术手册》", 31 July 2016, 中国环境科学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821395A (en) * | 2019-01-07 | 2019-05-31 | 长兴中元氢氧化钙有限公司 | A kind of calcium-based ammonia-free composite desulfurization device for dry-process cement production line and method thereof |
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