CN208049705U - A kind of cement kiln desulfurizer of dry-and-wet combined - Google Patents
A kind of cement kiln desulfurizer of dry-and-wet combined Download PDFInfo
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- CN208049705U CN208049705U CN201721610005.1U CN201721610005U CN208049705U CN 208049705 U CN208049705 U CN 208049705U CN 201721610005 U CN201721610005 U CN 201721610005U CN 208049705 U CN208049705 U CN 208049705U
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Abstract
The utility model discloses a kind of cement kiln desulfurizers of dry-and-wet combined, fully combine the technical characterstic of cement production process, solid-state dry-desulphurizer A is added in cement kiln raw material bucket elevator entrance, high temperature wet desulfurizing agent B is added in multi-cyclone pre-heater inlet flue, all desulfurization chemical reactions occur in multi-cyclone preheater and its gas approach, former cement kiln multi-cyclone preheater and its gas approach become the reactor of this sulfur removal technology, the SO in flue gas2It is removed wherein.Whole device includes mainly solid-state dry-desulphurizer A warehouses, blanking manual gate valve A, screw(-type) feeder A, warehouse B, blanking manual gate valve B, screw feeder B, electric gate valve, dissolving tank, delivery pump, solution reservoir, delivery pump, double-current spray gun body etc..The utility model has technical process easy to operate, takes up an area less, and cost is small, and low energy consumption, and denitrification efficiency is high, discharges SO in neat stress2Concentration meets relevant criterion.
Description
Technical field
The utility model is related to a kind of cement kiln desulfurizers of dry-and-wet combined, are applied to the flue gas desulfurization system of dry-and-wet combined
In system, belong to the technical field of cement kiln flue gas desulfurization.
Background technology
Sulfur dioxide (SO2) it is to cause one of primary pollution source of atmosphere pollution, the environmental pollution thus brought, especially
Acid rain, haze are extremely serious, cause serious economic loss.The environmental pollution moment threatens the health of people simultaneously,
The improvement for increasing sulfur dioxide is too impatient to wait.
In cement production process, the sulphur content in fuel and raw material generates SO in raw material maturing process2, by theory
The exhaust gas volumn of estimation, the cement producing line of a 5000 ton day production capacities, discharge is 500000Nm3/ h, the SO in flue gas2Concentration
Up to 1500mg/Nm3More than, the SO that is discharged daily into air2Reach 18 tons or more, the pollution of environment is well imagined, because
This, the desulfurization of cement kiln tail gas has been very urgent.
At this stage, it is administered for cement kiln tail gas, due to being limited by place, lime stone-gypsum can not be used wet on a large scale
Ammonium hydroxide is sprayed come desulfurization in method desulfurization technology, most cement plant using in kiln tail portion, which is primarily present following Railway Project：
(1) desulfuration efficiency is low, in entrance SO2Concentration is more than 600mg/Nm3When, export SO2Concentration is more than 200mg/Nm3, can not row up to standard
It puts；(2) the escaping of ammonia is serious, flue, humidification tower, the deduster of the ammonia heavy corrosion rear end of escape；(3) ammonia escaped becomes one kind
New pollution sources generate environment new pollution.Therefore it is badly in need of developing a set of completely new cement kiln desulfurization technology.
Utility model content
The utility model aim is to provide a kind of cement kiln dry-and-wet combined desulfurizer and technique, can efficiently remove water
SO in stall furnace exhaust gas2。
A kind of cement kiln desulfurizer of dry-and-wet combined, described device include being used for transmission the biography of solid-state dry-desulphurizer A
Defeated device A, the transmitting device B for being used for transmission high temperature wet desulfurizing agent B, desulfurization reactor, the cement kiln 40 for generating flue gas,
It is characterized in that：The desulfurization reactor is the existing multi-cyclone preheater 16 of cement kiln production technology, the multistage rotation
Wind formula preheater series be n, be denoted as successively first order tornado preheater 161, second level tornado preheater 162 ... n-th
Grade tornado preheater 16n, from first order tornado preheater, second level tornado preheater ... the preheating of n-th grade of cyclone type
The mounting height of device is sequentially reduced, and n is the integer of 3-5, is equipped with offgas outlet at the top of first order tornado preheater, lower part is set
There are connecting line and the connecting line to be divided into two and is separately connected second level tornado preheater top and third level cyclone type
At the top of preheater, second level tornado preheater lower part is connected with connecting line and the connecting line is divided into two and is separately connected
At the top of third level tornado preheater top and fourth stage tornado preheater, and so on, under the n-th -2 grades tornado preheaters
Portion is equipped with connecting line and the connecting line is divided into two and is separately connected (n-1)th grade of tornado preheater top and n-th grade of rotation
At the top of wind formula preheater, (n-1)th grade of tornado preheater, n-th grade of tornado preheater lower part be connected with cement kiln 40,
Exhanst gas outlet is equipped at the top of the cement kiln, exhanst gas outlet is communicated with the top of n-th grade of tornado preheater；
Gas approach 17 is additionally provided with to mutual at the top of first order tornado preheater top and second level tornado preheater
It is connected, the transmitting device A, transmitting device B are connected with gas approach.
Further, the transmitting device A include for storing the warehouse A 10 of solid-state dry-desulphurizer, the bottoms warehouse A are set
The the one the first screw(-type) feeders 12 for being arranged below the blanking manual gate valve 11 set, blanking manual gate valve, the one the first spiral shells
Rotation batcher 12 exports the cement slurry conveying skewed slot 13 being correspondingly arranged, cement slurry conveying skewed slot 13 exports the bucket being correspondingly arranged
Formula elevator 14, bucket elevator 14 export the raw material skewed slot 15 being correspondingly arranged, and the raw material skewed slot 15 is tilted with ground, ground
The closer one end in face is connected with gas approach 17.
Further, the transmitting device B is made of air transport device, liquid transporting apparatus and double-current spray gun body 28；Institute
Double-current spray gun body 28 is stated with gas approach 17 to be connected；
The air transport device be connect compressed air compressed air for instrument storage tank 30, compressed air for instrument storage tank with
Double-current spray gun body 28 connects；
The liquid transporting apparatus include for storing the warehouse B 20 of high temperature wet desulfurizing agent B, the bottoms warehouse B are arranged
The second screw(-type) feeder 22, the second screw(-type) feeder 22 that blanking manual gate valve 21,21 lower section of blanking manual gate valve are arranged
Export be correspondingly arranged electric gate valve 23, electric gate valve 23 export be correspondingly arranged dissolving tank 24, delivery pump 25, by defeated
The storage tank 26 and delivery pump 27 that pump 25 is connected with dissolving tank 24 are sent, delivery pump 27 is connected to storage tank 26 and double-current spray gun body 28, described
Dissolving tank 24 is equipped with the process water of connecting tube connection plant area.
The one the first screw(-type) feeder 12 described in the utility model is by frequency control, according to the SO in flue gas2Concentration is adjusted
The feeding coal of the warehouse A 10 of section storage solid-state dry-desulphurizer.
Second screw(-type) feeder 22 described in the utility model is frequency control, according to the SO in flue gas2Concentration is stored up to adjust
Deposit the feeding coal of the warehouse B 20 of high temperature wet desulfurizing agent B.
Delivery pump 25 described in the utility model is centrifugal pump, and the delivery pump 27 is metering pump or centrifugal multistage pump multiple centrifugal pump.
A kind of sulfur removal technology of cement kiln desulfurizer using the dry-and-wet combined, the technique are：
(1) dry desulfurization：The pulverized solid dry-desulphurizer A to be come by tank car transport passes through Geldart-D particle to warehouse A10
Storage, tremie pipe, hand operated gate valves 11 of the pulverized solid dry-desulphurizer A by the bottoms warehouse A, into the one the first spirals
Batcher 12, the first screw(-type) feeder 12 is frequency control, according to the SO in flue gas2Concentration adjusts solid-state dry-desulphurizer A
Feeding coal (exhanst gas outlet SO2Concentration increases, then adjusts the use that the first screw(-type) feeder 12 increases the A of solid-state dry-desulphurizer
Amount), the solid-state dry-desulphurizer A come out from the first screw(-type) feeder 12 enters in cement slurry conveying skewed slot 13, cement slurry
Cement slurry is put into conveying skewed slot 13, cement slurry is conveyed after being mixed with solid-state dry-desulphurizer A by bucket elevator 14
To raw material skewed slot 15 (the quality dosage of solid-state dry-desulphurizer A is usually a ten thousandth of cement slurry to 10/10000ths), lead to
Raw material skewed slot 15 is crossed to be added in first order tornado preheater 161 and by tornado preheaters at different levels；And flue gas is from cement kiln
Exhanst gas outlet enter n-th grade of tornado preheater, subsequent flue gas constantly rises, pass sequentially through (n-1)th grade of tornado preheater,
The n-th -2 grades tornado preheaters ..., third level tornado preheater, second level tornado preheater, first order cyclone type it is pre-
Hot device, SOs of the solid-state dry-desulphurizer A in tornado preheaters at different levels and gas approach 17 and in flue gas2It is anti-that chemistry occurs
It answers, the SO in flue gas2It is removed；
(2) wet desulphurization：The powdery high temperature wet desulfurizing agent B to be come by tank car transport passes through Geldart-D particle to warehouse B 20
Middle storage, powdery high temperature wet desulfurizing agent B enter the second spiral by the tremie pipe of the bottoms warehouse B, by hand operated gate valve 21
Batcher 22, the second screw(-type) feeder 22 are frequency control, pass through feed (the exhanst gas outlet SO of the second screw(-type) feeder 222It is dense
Degree increases, then adjusts the dosage that the second screw(-type) feeder 22 increases powdery high temperature wet desulfurizing agent B), high temperature wet desulfurizing agent B warps
Enter dissolving tank 24 after crossing electric gate valve 23, dissolving tank 24 is configured high temperature wet desulfurizing agent B by a certain amount of process water
It is 10%~20% solution at mass concentration, the high temperature wet desulfurizing agent B solution configured is sent by delivery pump 25 to storage tank 26
For use, the high temperature wet desulfurizing agent B solution being stored in storage tank 26 is delivered to double-current spray gun body 28 by delivery pump 27, in spray gun
It is interior to be mixed with the compressed air from compressed air for instrument storage tank 30, it is atomized into fine liquid particle, sprays into and is revolved with the first order
In the connected gas approach 17 of wind formula preheater 161, the high temperature wet desulfurizing agent B solution of penetrating is revolved in gas approach and the first order
In wind formula preheater with the SO in flue gas2It chemically reacts, the SO in flue gas2It is removed,
Step (1) dry desulfurization, step (2) wet desulphurization are carried out at the same time.
In general, the solid-state dry-desulphurizer A is calcium hydroxide, calcium oxide, magnesium hydroxide or other common metal oxygens
Compound desulfurizing agent, such as iron oxide, the high temperature wet desulfurizing agent B is the alkaline aqueous solution of non-ammonia, such as sodium hydroxide is molten
Liquid etc. is in protection domain.
Further, the reaction temperature of the gas approach and first order tornado preheater is 400 DEG C~500 DEG C, described
The reaction temperature of the second level to n-th grade of tornado preheater is 400 DEG C~900 DEG C.
The major advantage of the technology：
1. cyclone type raw material heater has good mass-and heat-transfer performance, an efficient gas is provided for desulphurization reaction
Gu, gas-liquid chemistry reaction environment, all become the reactor of desulfurization per level-one tornado preheater and its gas approach, therefore can be with
Obtain higher desulfuration efficiency.
2. multi-cyclone preheater temperature range from 300 DEG C~900 DEG C, has certain per level-one tornado preheater
Temperature field range can select best desulfurization reaction temperature window that desulfurizing agent is added, therefore can obtain higher desulfurization effect
Rate.
3. the two kinds of desulfurizing agents of dry and wet used have higher reactivity, higher desulfuration efficiency can get.
4. a whole set of desulfurizer technological process is simple, floor space is small, makes full use of cement plant existing device, discharge it is net
SO in flue gas2Concentration meets《Cement industry atmosphere pollutants emission standards》(GB4915-2013) emission request in, in water
Stall furnace exhaust gas is with a wide range of applications in administering.
The effect of the utility model is mainly reflected in：Under conditions of low cost, in efficient removal cement kiln tail gas
SO2, realize qualified discharge, and simple for process, efficient, low energy consumption.
Description of the drawings
Fig. 1 is a kind of block diagram of the cement kiln sulfur removal technology of dry-and-wet combined.
Fig. 2 is a kind of cement kiln desulfurization process figure of dry-and-wet combined.
In figure, 10- warehouses A, 11- solid-state dry-desulphurizer A blanking manual gate valves, 12- solid-state dry-desulphurizer A spirals
Batcher, 13- cement slurries convey skewed slot, 14- bucket elevators, 15- raw material skewed slots, the rotation of 161~165-the first~Pyatyi
Wind formula preheater, 17- gas approach, 20- warehouses B, 21- high temperature wet desulfurizing agent B blanking manual gate valves, 22- solid-state dry method
Desulfurizing agent A screw(-type) feeders, 23- electric gate valves, 24- dissolving tanks, 25- delivery pumps, 26- storage tanks, 27- delivery pumps, 28- are bis-
Fluid sprayer, 30- compressed air for instrument storage tanks.
Specific implementation mode
The utility model is further described with reference to specific embodiment, but the scope of protection of the utility model and not only
It is limited to this.
As shown in Fig. 2, a kind of cement kiln desulfurizer of dry-and-wet combined, which includes desulfurization reactor, generates flue gas
Cement kiln 40, the desulfurization reactor be the existing multi-cyclone preheater 16 of cement kiln production technology, it is described more
Grade tornado preheater series determines that the present embodiment is specially 5 grades, is denoted as first successively according to existing cement kiln production technology
Grade tornado preheater 161, second level tornado preheater 162 ... level V tornado preheater 165, from the first order revolve
Wind formula preheater, second level tornado preheater ... the mounting height of level V tornado preheater is sequentially reduced, the first order
It is equipped with offgas outlet at the top of tornado preheater, lower part, which is equipped with connecting line, and the connecting line is divided into two is separately connected the
At the top of two-stage cyclone preheater top and third level tornado preheater, second level tornado preheater lower part is connected with connection
Pipeline and the connecting line, which are divided into two, is separately connected third level tornado preheater top and fourth stage tornado preheater
Top, third level tornado preheater lower part is equipped with connecting line and the connecting line is divided into two and is separately connected fourth stage rotation
At the top of wind formula preheater top and level V tornado preheater, fourth stage tornado preheater, level V tornado preheater
Lower part be connected with cement kiln 40, exhanst gas outlet, exhanst gas outlet and level V cyclone type are equipped at the top of the cement kiln
The top of preheater communicates；
Gas approach 17 is additionally provided with to mutual at the top of first order tornado preheater top and second level tornado preheater
It is connected.
The device further includes the blanking manual for storing the warehouse A 10 of solid-state dry-desulphurizer A, the setting of the bottoms warehouse A
Solid-state dry-desulphurizer the first screw feeders of A that gate valve 11,11 lower section of solid-state dry-desulphurizer A blanking manuals gate valve are arranged
Machine 12, the first screw(-type) feeders of solid-state dry-desulphurizer A 12 export cement slurry conveying skewed slot 13, the cement slurry being correspondingly arranged
Conveying skewed slot 13 exports the bucket elevator 14 being correspondingly arranged, bucket elevator 14 exports the raw material skewed slot 15 being correspondingly arranged, institute
It states raw material skewed slot 15 to tilt with ground, the closer one end in ground is connected with gas approach 17；
The device further includes being used for transmission height by what air transport device, liquid transporting apparatus and double-current spray gun body 28 formed
The transmitting device of warm wet desulphurization agent B, the double fluid spray gun body 28 are connected with gas approach 17；The air transport device is
The compressed air for instrument storage tank 30 of compressed air is connected, compressed air for instrument storage tank is connect with double-current spray gun body 28；The liquid
Conveying device includes the high temperature wet desulfurizing agent B for storing the warehouse B 20 of high temperature wet desulfurizing agent B, the setting of the bottoms warehouse B
The high temperature wet desulfurizing agent B second that blanking manual gate valve 21,21 lower section of high temperature wet desulfurizing agent B blanking manuals gate valve are arranged
Screw(-type) feeder 22, the second screw(-type) feeders of high temperature wet desulfurizing agent B 22 export electric gate valve 23, the electric inserting being correspondingly arranged
Plate valve 23 exports the dissolving tank 24 being correspondingly arranged, delivery pump 25, the storage tank 26 being connected with dissolving tank 24 by delivery pump 25 and defeated
Pump 27, delivery pump 27 is sent to be connected to storage tank 26 and double-current spray gun body 28, the technique that the dissolving tank 24 is equipped with connecting tube connection plant area
Water；
First screw(-type) feeder 12, the second screw(-type) feeder 22 are by frequency control, according to the SO in flue gas2Concentration is come
The feeding coal of the warehouse A10 of storage solid-state dry-desulphurizer, the warehouse B20 of high temperature wet desulfurizing agent B are adjusted respectively；It is described defeated
It is centrifugal pump to send pump 25, and the delivery pump 27 is metering pump or centrifugal multistage pump multiple centrifugal pump.
In addition as shown in Figure 1, 2, the utility model additionally provides a kind of technique using above-mentioned apparatus, and (1) dry method is de-
Sulphur：The pulverized solid dry-desulphurizer A to be come by tank car transport is stored by Geldart-D particle to warehouse A, and pulverized solid dry method is de-
Tremie pipe, hand operated gate valves 11 of the sulphur agent A by the bottoms warehouse A, into the first screw(-type) feeder 12, the first screw(-type) feeder 12
For frequency control, according to the SO in flue gas2Concentration adjusts the feeding coal of solid-state dry-desulphurizer A, from the first screw(-type) feeder
12 solid-state dry-desulphurizer A out enters in cement slurry conveying skewed slot 13, and cement is put into cement slurry conveying skewed slot 13
Raw material, cement slurry by bucket elevator 14 are delivered to 15 (dry desulfurization of raw material skewed slot after being mixed with solid-state dry-desulphurizer A
The quality dosage of agent A is usually a ten thousandth of cement slurry to 10/10000ths), pass through raw material skewed slot 15 and first order rotation is added
In wind formula preheater 161 and pass through tornado preheaters at different levels；And flue gas enters n-th grade of cyclone type from the exhanst gas outlet of cement kiln
Preheater, subsequent flue gas constantly rise, pass sequentially through (n-1)th grade of tornado preheater, the n-th -2 grades tornado preheaters ...,
Third level tornado preheater, second level tornado preheater, first order tornado preheater, solid-state dry-desulphurizer A is each
SO in grade tornado preheater and gas approach 17 and in flue gas2It chemically reacts, the SO in flue gas2It is removed；
(2) wet desulphurization：The powdery high temperature wet desulfurizing agent B to be come by tank car transport passes through Geldart-D particle to warehouse B20
Middle storage, powdery high temperature wet desulfurizing agent B enter the second spiral by the tremie pipe of the bottoms warehouse B, by hand operated gate valve 21
Batcher 22, the second screw(-type) feeder 22 are frequency control, pass through the feed of the second screw(-type) feeder 22, high temperature wet desulfurizing agent
B enters dissolving tank 24 after electric gate valve 23, and dissolving tank 24 is by a certain amount of process water, by high temperature wet desulfurizing agent B
It is 10%~20% solution to be configured to mass concentration, and the high temperature wet desulfurizing agent B solution configured is sent by delivery pump 25 to storage
Tank 26 is for use, and the high temperature wet desulfurizing agent B solution being stored in storage tank 26 is delivered to double-current spray gun body 28 by delivery pump 27,
It is mixed with the compressed air from compressed air for instrument storage tank 30 in spray gun, is atomized into fine liquid particle, sprayed into and first
In the connected gas approach 17 of grade tornado preheater 161, the high temperature wet desulfurizing agent B solution of penetrating is in gas approach and the
In one cyclonic formula preheater with the SO in flue gas2It chemically reacts, the SO in flue gas2It is removed,
Step (1) dry desulfurization, step (2) wet desulphurization are carried out at the same time.
The technique can efficiently remove the SO in kiln gas2, desulfurizing agent A is solid, and desulfurizing agent B solids are configured to
Desulfurizing agent B solution.
As shown in Figure 1, 2, desulfurizing agent A is transported to scene by tank car, by Geldart-D particle to desulfurizing agent A warehouses 10.
As shown in Figure 1, 2, be stored in desulfurizing agent A in desulfurizing agent A warehouses 10 by hand operated gate valve 11, the first spiral to
Material machine 12 is added into raw material conveyor skewed slot 13 and is mixed with cement slurry, and the feeding coal of desulfurizing agent A passes through the first spiral shell
Batcher 12 is revolved to control.
As shown in Figure 1, 2, desulfurizing agent A and cement slurry are delivered to raw material bucket elevator 14 by raw material conveyor skewed slot 13
In, enter raw material conveyor skewed slot 15 after being promoted to eminence, it is pre- that cyclone type is added by skewed slot 15 together in desulfurizing agent A and cement slurry
In hot device 161, then enter tornado preheater 162 from tornado preheater 161, enters whirlwind from tornado preheater 162
Formula preheater 163 enters tornado preheater 164 from tornado preheater 163, in heaters at different levels (161~164) and its enters
In mouth flue, the SO in desulfurizing agent A and kiln gas2It reacts, the SO in kiln tail gas2It is removed.
As shown in Figure 1, 2, the SO in desulfurizing agent A and kiln gas2Temperature range when reaction is at 400 DEG C~900 DEG C.
As shown in Figure 1, 2, the SO in desulfurizing agent A and kiln gas2In multi-cyclone preheater 161~164 and its entrance
It is chemically reacted in flue.
As shown in Figure 1, 2, desulfurizing agent B is transported to scene by tank car, by Geldart-D particle to desulfurizing agent B warehouses 20.
As shown in Figure 1, 2, be stored in desulfurizing agent B in desulfurizing agent B warehouses 20 by hand operated gate valve 21, the second spiral to
Be added into after material machine 22, electric gate valve 23 in desulfurizing agent B dissolving tanks 24, and the process water being added be configured to 10% together~
20% desulfurizing agent B solution.
As shown in Figure 1, 2, the desulfurizing agent B solution configured is delivered to desulfurizing agent B solution holding vessel 26 by delivery pump 25,
Delivery pump 25 is centrifugal pump.
As shown in Figure 1, 2, the desulfurizing agent B solution being stored in desulfurizing agent B solution holding vessel 26 is defeated by delivery pump 27
It send to double-current spray gun body 28, delivery pump 27 is metering pump or centrifugal multistage pump multiple centrifugal pump.
As shown in Figure 1, 2, desulfurizing agent B solution is mixed with the compressed air from compressed air cylinder 30 in double-current spray gun body 28
It closes, under compressed air and the atomizing of nozzle, desulfurizing agent B solution is atomized into the droplet of 100 μm of <, droplet and kiln
SO in furnace gas2It chemically reacts, the SO in kiln gas2It is removed.
As shown in Figure 1, 2, spray gun 28 is double-current spray gun body, is arranged on the gas approach of tornado preheater 161, spray gun
28 quantity is branched.
As shown in Figure 1, 2, the SO in the desulfurizing agent B solution and kiln gas of penetrating2In 161 entrance cigarette of tornado preheater
It is chemically reacted in road and tornado preheater 161, reaction temperature is at 400 DEG C~500 DEG C.
The above, the desulfurizing agent A and SO in kiln gas2It chemically reacts, reaction temperature section is 400~900
DEG C, the position of the chemical reaction of generation is not limited to the tornado preheater series described in the utility model patent, cyclone type
Preheater series will depending on cement kiln production technology, in all 400~900 DEG C of temperature ranges, in tornado preheater and
Desulfurization chemical reaction occurs for its gas approach, both is within the protection scope of the present invention.
The above, the desulfurizing agent B and SO in kiln gas2It chemically reacts, reaction temperature section is 400~500
DEG C, the position of the chemical reaction of generation is not limited to tornado preheater 161 and its entrance described in the utility model patent
The position of flue, tornado preheater will be all in 400~500 DEG C of temperature ranges depending on cement kiln production technology
Tornado preheater is added desulfurizing agent B wherein and its desulfurization chemical reaction occurs for gas approach, in the utility model
Within protection domain.
The above, the utility model patent make full use of tornado preheater and its cigarette in cement kiln production technology
Road is as desulfurization reactor and the essential core content of the utility model patent, in all production technologies using cement kiln
Tornado preheater and its flue both are within the protection scope of the present invention as desulfurization reactor.
Embodiment 1：
As shown in Fig. 2, being implemented using the utility model technological process.
According to the technological process of Fig. 2, desulfurizing agent A is added in raw material conveyor skewed slot, by raw material and is taken off by bucket elevator
The mixture of sulphur agent A is promoted in the raw material skewed slot of eminence, and the mixture of raw material and desulfurizing agent A are added by the raw material skewed slot of eminence
Enter into one cyclonic formula pre-heater inlet flue, desulfurizing agent A and cement slurry sequentially enter one cyclonic formula preheater, two level
Tornado preheater, three-level tornado preheater, Category Four cyclone formula preheater, in one cyclonic formula preheater, two-stage cyclone
In preheater, three-level tornado preheater, Category Four cyclone formula preheater, desulfurizing agent A and SO in kiln gas2It chemically reacts,
SO in kiln gas2It is removed.
After desulfurizing agent B is configured to 10%~20% solution, double-current spray gun body, double-current spray gun body arrangement are delivered to by pump
On one cyclonic formula pre-heater inlet flue, for temperature at 400 DEG C~500 DEG C, desulfurizing agent B solution is empty by spray gun and compression herein
Fine drop of the aerosol chemical conversion less than 100 μm, sprays into flue, desulfurizing agent B is in one cyclonic formula preheater and its gas approach
In with the SO in kiln gas2It chemically reacts, the SO in kiln gas2It is removed.
By the combined desulfurization of desulfurization A and desulfurizing agent B, the desulfuration efficiency of the utility model is more than 90%, in emission
SO2Concentration is less than 200mg/Nm3, meet national standard.Therefore, the utility model can be widely applied to cement kiln tail gas
Desulfurization.
Claims (6)
1. a kind of cement kiln desulfurizer of dry-and-wet combined, described device includes being used for transmission the transmission of solid-state dry-desulphurizer A
Device A, the transmitting device B for being used for transmission high temperature wet desulfurizing agent B, desulfurization reactor, the cement kiln (40) for generating flue gas,
It is characterized in that：The desulfurization reactor is the existing multi-cyclone preheater (16) of cement kiln production technology, the multistage
Tornado preheater series is n, is denoted as first order tornado preheater (161), second level tornado preheater successively
(162) ... n-th grade of tornado preheater (16n), from first order tornado preheater, second level tornado preheater ...
The mounting height of n-th grade of tornado preheater is sequentially reduced, and n is the integer of 3-5, is equipped at the top of first order tornado preheater
Offgas outlet, lower part is equipped with connecting line and the connecting line is divided into two and is separately connected second level tornado preheater top
At the top of third level tornado preheater, second level tornado preheater lower part is connected with connecting line and the connecting line one
It is divided into two to be separately connected at the top of third level tornado preheater top and fourth stage tornado preheater, and so on, the n-th -2 grades
Tornado preheater lower part is equipped with connecting line and the connecting line is divided into two and is separately connected (n-1)th grade of tornado preheater
At the top of top and n-th grade of tornado preheater, (n-1)th grade of tornado preheater, n-th grade of tornado preheater lower part and water
Stall stove (40) is connected, and exhanst gas outlet, the top of exhanst gas outlet and n-th grade of tornado preheater are equipped at the top of the cement kiln
It communicates；
Gas approach (17) is additionally provided with to mutual at the top of first order tornado preheater top and second level tornado preheater
Connection, the transmitting device A, transmitting device B are connected with gas approach.
2. the cement kiln desulfurizer of dry-and-wet combined as described in claim 1, it is characterised in that：The transmitting device A includes
For storing the warehouse A (10) of solid-state dry-desulphurizer A, blanking manual gate valve (11), the blanking manual of the setting of the bottoms warehouse A
The cement slurry that the first screw(-type) feeder (12), screw(-type) feeder (12) outlet of setting below gate valve (11) are correspondingly arranged is defeated
It send skewed slot (13), cement slurry conveying skewed slot (13) to export bucket elevator (14), the bucket elevator (14) being correspondingly arranged to go out
The raw material skewed slot (15) that mouth is correspondingly arranged, the raw material skewed slot (15) tilt with ground, the closer one end in ground and entrance
Flue (17) is connected.
3. the cement kiln desulfurizer of dry-and-wet combined as described in claim 1, it is characterised in that：The transmitting device B is by sky
Gas conveying device, liquid transporting apparatus and double-current spray gun body (28) form；The double fluid spray gun body (28) and gas approach (17)
It is connected；
The air transport device is the compressed air for instrument storage tank (30) for connecting compressed air, compressed air for instrument storage tank with it is double
Fluid sprayer (28) connects；
The liquid transporting apparatus includes for storing under the warehouse B (20) of high temperature wet desulfurizing agent B, the setting of the bottoms warehouse B
Expect hand operated gate valve (21), the second screw(-type) feeder (22) of blanking manual gate valve (21) lower section setting, second spiral
Batcher (22) exports the electric gate valve (23) being correspondingly arranged, electric gate valve (23) exports the dissolving tank being correspondingly arranged
(24), delivery pump (25), the storage tank (26) that is connected with dissolving tank (24) by delivery pump (25) and delivery pump (27), delivery pump
(27) connection storage tank (26) and double-current spray gun body (28), the dissolving tank (24) are equipped with the process water of connecting tube connection plant area.
4. the cement kiln desulfurizer of dry-and-wet combined as claimed in claim 2, it is characterised in that：First screw(-type) feeder
(12) by frequency control, according to the SO in flue gas2Concentration come adjust storage solid-state dry-desulphurizer warehouse A (10) feed
Amount.
5. the cement kiln desulfurizer of dry-and-wet combined as claimed in claim 3, it is characterised in that：Second screw(-type) feeder
(22) it is frequency control, according to the SO in flue gas2Concentration adjusts the feed of the warehouse B (20) of storage high temperature wet desulfurizing agent B
Amount.
6. the cement kiln desulfurizer of dry-and-wet combined as claimed in claim 3, it is characterised in that：The delivery pump (25) be from
Heart pump, the delivery pump (27) are metering pump or centrifugal multistage pump multiple centrifugal pump.
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| CN201721610005.1U CN208049705U (en) | 2017-11-27 | 2017-11-27 | A kind of cement kiln desulfurizer of dry-and-wet combined |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721610005.1U CN208049705U (en) | 2017-11-27 | 2017-11-27 | A kind of cement kiln desulfurizer of dry-and-wet combined |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111097282A (en) * | 2019-12-31 | 2020-05-05 | 崇左南方水泥有限公司 | Method and device for desulfurizing cement kiln flue gas by using white mud |
| CN114225881A (en) * | 2021-12-14 | 2022-03-25 | 河南汇金智能装备有限公司 | Gas flow reaction kettle in pipeline and desulfurizing device using same |
| CN115974435A (en) * | 2023-01-10 | 2023-04-18 | 福建龙麟环境工程有限公司 | Dynamic sulfur suppression system and method for novel dry-process cement kiln under automatic control of DCS |
-
2017
- 2017-11-27 CN CN201721610005.1U patent/CN208049705U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111097282A (en) * | 2019-12-31 | 2020-05-05 | 崇左南方水泥有限公司 | Method and device for desulfurizing cement kiln flue gas by using white mud |
| CN114225881A (en) * | 2021-12-14 | 2022-03-25 | 河南汇金智能装备有限公司 | Gas flow reaction kettle in pipeline and desulfurizing device using same |
| CN114225881B (en) * | 2021-12-14 | 2023-11-10 | 河南汇金智能装备有限公司 | Air flow reaction kettle in pipeline and desulfurizing device using air flow reaction kettle |
| CN115974435A (en) * | 2023-01-10 | 2023-04-18 | 福建龙麟环境工程有限公司 | Dynamic sulfur suppression system and method for novel dry-process cement kiln under automatic control of DCS |
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