CN206198984U - Dry-process cement rotary kiln ammonia process semidry process desulfurizer - Google Patents
Dry-process cement rotary kiln ammonia process semidry process desulfurizer Download PDFInfo
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- CN206198984U CN206198984U CN201620697082.4U CN201620697082U CN206198984U CN 206198984 U CN206198984 U CN 206198984U CN 201620697082 U CN201620697082 U CN 201620697082U CN 206198984 U CN206198984 U CN 206198984U
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Abstract
The utility model discloses a kind of dry-process cement rotary kiln ammonia process semidry process desulfurizer, device includes ammoniacal liquor storage system, ammoniacal liquor delivery measurement system, blowing plant, ammonia atomization device, programmable control unit, wherein ammoniacal liquor storage system by tank used for storing ammonia, unload ammonia module, technique water tank and constitute, ammoniacal liquor delivery measurement system is mended ammonia module, ammoniacal liquor metering module and is constituted by ammoniacal liquor surge tank, ammoniacal liquor conveyor module, desulfurization.The utility model has that desulfuration efficiency is high, ammoniacal liquor utilization rate is high, simple to operate, high degree of automation and the low advantage of cost of investment.
Description
Technical field
The utility model is related to desulfurizing industrial fume environment protection treating field, specifically a kind of dry-process cement rotary kiln ammonia process semidry method
Desulfurizer.
Background technology
Cement industry atmosphere pollutants emission standardses are enhanced again in recent years, and on December 27th, 2013 is directed to cement industry, state
Family has issued tightened up standard limit of smog release《Cement industry atmosphere pollutants emission standardses》(GB4915-2013), wherein advising
SO2 concentration of emissions will be controlled in below 200mg/Nm3 in determining flue gas, and key area will be controlled in 100mg/Nm3.Therefore, cement
Kiln flue gas desulfurization is gradually taken seriously.
Element sulphur in new dry process rotary kiln production system is essentially from fuel (coal) and raw material (lime stone ore).Combustion
Expect the SO2 produced in dore furnace and kiln hood burning with flue gas stream by preheater, wherein with raw meal powder haptoreaction and then reach
To the effect of desulfurization；Raw material institute's sulfur-bearing is decomposed in top preheater and produces SO2, is used to dry except part SO2 introduces raw mill
Raw material is so as to outside realizing desulfurization, most of SO2 can be with flue gas from kiln tail discharge system.Therefore, cement kiln tail smoke SO 2
Generation depends primarily on sulfur content size in raw material limestone.
The desulfurizer of Vehicles Collected from Market is numerous with technology category, and is mainly used in coal steam-electric plant smoke improvement field.
If such desulfurizer and technique are directly applied into cement kiln flue gas desulfurization, in the side such as initial outlay, operation expense
Face can be difficult to receive by manufacturer.Such as, wet desulfurizing process (with limestone-gypsum method) is not particularly suited for most of cement plant cigarette
Gas SO2 is slightly above the situation of flue gas pollutant discharge standard；Dry desulfurization (in-furnace calcium spraying) is not suitable for cement kiln, because cement
Kiln production technology itself just contains substantial amounts of calcium based raw material, the DeGrain of extra plus calcium desulfurizing；(spraying is dry for semi-dry desulphurization
Dry method) application when need the multiple desulfurizing agent spray sites of selection, just can guarantee that flue gas bulk devulcanization effect.
It is response national environmental protection emission reduction policy, is that cement industry seeks economic, efficient sulfur removal technology, it is proposed that Yi Zhongyong
In the apparatus and method of cement kiln flue gas desulfurization.
Utility model content
The purpose of this utility model is to provide a kind of dry-process cement rotary kiln ammonia process semidry process desulfurizer, to reduce cement kiln end
Smoke SO 2 concentration of emission, to reach discharging standards.
In order to achieve the above object, the technical scheme that the utility model is used for：
Dry-process cement rotary kiln ammonia process semidry process desulfurizer, it is characterised in that：Including ammoniacal liquor storage system, ammoniacal liquor conveying metering
System, blowing plant, ammonia atomization device, programmable control unit, wherein：
Ammoniacal liquor storage system by tank used for storing ammonia, unload ammonia module, technique water tank and constitute, wherein unloading outlet and the ammoniacal liquor of ammonia module
Storage tank import is connected, and tank used for storing ammonia outlet, technique tank outlet are connected to ammoniacal liquor delivery measurement system by pipeline respectively；
Ammoniacal liquor delivery measurement system mends ammonia module, ammoniacal liquor metering module structure by ammoniacal liquor surge tank, ammoniacal liquor conveyor module, desulfurization
Into tank used for storing ammonia outlet, technique tank outlet are mended ammonia module inlet and be connected with desulfurization respectively in the ammoniacal liquor storage system, desulfurization
Mend ammonia module outlet to be connected with ammoniacal liquor surge tank import, the outlet of ammoniacal liquor surge tank is connected with ammoniacal liquor conveyor module import, and ammoniacal liquor is deposited
Technique tank outlet is also connected with ammoniacal liquor conveyor module import in storage system, and the outlet of ammoniacal liquor conveyor module is entered with ammoniacal liquor metering module
Mouth connection, ammoniacal liquor metering module outlet is connected with ammonia atomization device import；
The outlet of ammonia atomization device is led on the wherein one-level preheater body of quality coal in cement kiln systems and the flue gas of the preheater
In liter pipeline；
Blowing plant is exported and is connected with ammonia atomization device, by blowing plant for ammonia atomization device is provided
Stabilization source of the gas；
Programmable control unit respectively with ammoniacal liquor storage system in unload ammonia in ammonia module, and ammoniacal liquor delivery measurement system
Water conveyor module, desulfurization mend ammonia module, the electrical connection of ammoniacal liquor metering module.
Described dry-process cement rotary kiln ammonia process semidry process desulfurizer, it is characterised in that：Also include flue gas monitoring device, it is described
The probe portion of flue gas monitoring device be arranged on quality coal in cement kiln systems in preheater flue gas rising passway in, flue gas monitoring device with can
Programming Control device is connected.
Described dry-process cement rotary kiln ammonia process semidry process desulfurizer, it is characterised in that：The preferred two-fluid of ammonia atomization device
Atomizing lance.
Described dry-process cement rotary kiln ammonia process semidry process desulfurizer, it is characterised in that：Preferably, blowing plant is provided
Source gas pressure value be 0.3-0.7MPa.
The utility model uses apparatus above, with desulfuration efficiency it is high, ammoniacal liquor utilization rate is high, simple to operate, automation journey
Degree height and the low advantage of cost of investment.Meanwhile, ammoniacal liquor stocking system can utilize built denitration ammoniacal liquor stocking system, and be changed
Make.Additionally, the construction period is short, duration ＜ 15 days, without stopping kiln, does not influence cement kiln production line normally to run.It is former with reference to flue gas
Beginning SO2 concentration can flexible modulation ammoniacal liquor usage amount, saving desulfurization ammoniacal liquor usage amount, reduction operating cost.
Brief description of the drawings
Fig. 1 is the new dry process rotary kiln kiln exit gas desulphurization system apparatus structure schematic diagram of the utility model embodiment 1.
Fig. 2 is the new dry process rotary kiln kiln exit gas desulphurization system apparatus structure schematic diagram of the utility model embodiment 2.
Fig. 3 is the new dry process rotary kiln kiln exit gas desulphurization system apparatus structure schematic diagram of the utility model embodiment 3.
Marked in figure：
1st, ammoniacal liquor stocking system, 2, ammoniacal liquor delivery measurement system, 3, unload ammonia module, 4, tank used for storing ammonia, 5, technique water tank, 6,
Ammonia module is mended in desulfurization, and 7, ammoniacal liquor surge tank, 8, ammoniacal liquor conveyor module, 9, ammoniacal liquor metering module, 10, blowing plant, 11, ammonia
Water atomization plant, 12, one-level preheater, 13, two grades of preheaters, 14, three-level preheater, 15, flue gas monitoring device, 16, can compile
Process control device.
Specific embodiment
Below against accompanying drawing, by the description to embodiment, to apparatus and method specific embodiment of the present utility model
Further details of explanation.
The utility model structure as expressed by accompanying drawing, is a kind of new dry process rotary kiln kiln exit gas desulfurizer.
The utility model is directed to new dry process rotary kiln kiln exit gas SO2Content overproof discharges phenomenon, with reference to cement kiln life
The analysis result of production. art own characteristic and cement raw material ore institute sulfur-bearing composition and content, chooses suitable temperature province and anti-
Flow field is answered, by independent conveying, metering and atomising device by ammonia atomization, with flue gas mixing and contacting reaction, SO is realized2Emission reduction
Purpose.
The utility model fume desulphurization method is mainly in ammonia water spray to quality coal in cement kiln systems by ammonia atomization device.
Ammonia spirit concentration is 10-90%, and more preferably concentration is 15-50%, most preferable concentrations 20-30%.
Ammonia atomization device is twin spray gun.
The main chemical reactions equation that the utility model is related to is as follows：
1st, the SO in ammoniacal liquor and flue gas2Generation ammonium bisulfite and ammonium sulfite are reacted under conditions of with the presence of steam：
3NH3+2SO2+2H2O→NH4HSO3+(NH4)2SO3
2nd, sulphite O in flue gas2In the presence of reacting generating salt：
NH4HSO3+1/2O2→NH4HSO4
(NH4)2SO3+1/2O2→(NH4)2SO4
The generation of non-secondary pollution thing, environmental protection in the utility model fume desulphurization method implementation process.
Embodiment 1
As shown in figure 1, in the present embodiment, the ammoniacal liquor for using 20-30% is desulfurizing agent, by unloading ammonia module 3 by outsourcing ammonia
Water is delivered to tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 1/3 of the volume of tank used for storing ammonia 4.Ammonia module 6 is mended by ammonia by desulfurization
Water is delivered to ammoniacal liquor surge tank 7 from tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 2/3 of the cumulative volume of ammoniacal liquor surge tank 7.Ammoniacal liquor
Stocking system 1 is provided with technique water tank 5, and technique water tank 5 mends ammonia module 6 with desulfurization and ammoniacal liquor conveyor module 8 is connected to realize
Periodically equipment, pipeline are cleaned, prevents from blocking.The operational factor of ammoniacal liquor stocking system 1 is by electric signal transmission to programmable
Control device 16.
Independent ammoniacal liquor conveyor module 8, ammoniacal liquor metering module 9 are provided with the present embodiment.By ammoniacal liquor conveyor module 8 by ammonia
Water is delivered to the ammonia atomization device 11 being arranged on one-level preheater 12 and its uptake flue.The control of ammoniacal liquor conveying capacity is main
Completed by ammoniacal liquor metering module 9, ammoniacal liquor measure monitor result is transmitted to programmable control unit in electric signal transmission mode
16。
Blowing plant 10 is provided with the present embodiment, to ensure the stability of spray gun atomizing effect.Blowing plant
10 is that ammonia atomization device 11 provides pressure-stabilized air source, and the gas pressure value is 0.4-0.5MPa.
Flue gas monitoring device 15 is provided with the present embodiment, real-time monitoring can be carried out to the smoke components after desulphurization reaction.
SO in Main Analysis flue gas2Concentration controls desulfurized effect, while being also required to be analyzed ammonia in flue gas composition, controls not anti-
The desulfurizing agent ammoniacal liquor discharge capacity answered.Flue gas monitoring result is by electric signal transmission to programmable control unit 16.
Programmable control unit 16 is collected and comes from ammoniacal liquor stocking system 1, ammoniacal liquor delivery measurement system 2 and cigarette in the present embodiment
The electric signal of gas monitoring device 15, the middle control control operation with field apparatus is collected with the monitoring result for realizing field apparatus, is reached
To desulphurization system automation mechanized operation purpose.
Embodiment 2
As shown in Fig. 2 in the present embodiment, the ammoniacal liquor for using 30-35% is desulfurizing agent, by unloading ammonia module 3 by outsourcing ammonia
Water is delivered to tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 1/3 of the volume of tank used for storing ammonia 4.Ammonia module 6 is mended by ammonia by desulfurization
Water is delivered to ammoniacal liquor surge tank 7 from tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 2/3 of the cumulative volume of ammoniacal liquor surge tank 7.Ammoniacal liquor
Stocking system 1 is provided with technique water tank 5, and technique water tank 5 mends ammonia module 6 with desulfurization and ammoniacal liquor conveyor module 8 is connected to realize
Periodically equipment, pipeline are cleaned, prevents from blocking.The operational factor of ammoniacal liquor stocking system 1 is by electric signal transmission to programmable
Control device 16.
Independent ammoniacal liquor conveyor module 8, ammoniacal liquor metering module 9 are provided with the present embodiment.By ammoniacal liquor conveyor module 8 by ammonia
Water is delivered to the ammonia atomization device 11 being arranged on two grades of preheaters 13 and its uptake flue.The control of ammoniacal liquor conveying capacity is main
Completed by ammoniacal liquor metering module 9, ammoniacal liquor measure monitor result is transmitted to programmable control unit in electric signal transmission mode
16。
Blowing plant 10 is provided with the present embodiment, to ensure the stability of spray gun atomizing effect.Blowing plant
10 is that ammonia atomization device 11 provides pressure-stabilized air source, and the gas pressure value is 0.5-0.55MPa.
Flue gas monitoring device 15 is provided with the present embodiment, real-time monitoring can be carried out to the smoke components after desulphurization reaction.
SO in Main Analysis flue gas2Concentration controls desulfurized effect, while being also required to be analyzed ammonia in flue gas composition, controls not anti-
The desulfurizing agent ammoniacal liquor discharge capacity answered.Flue gas monitoring result is by electric signal transmission to programmable control unit 16.
Programmable control unit 16 is collected and comes from ammoniacal liquor stocking system 1, ammoniacal liquor delivery measurement system 2 and cigarette in the present embodiment
The electric signal of gas monitoring device 15, the middle control control operation with field apparatus is collected with the monitoring result for realizing field apparatus, is reached
To desulphurization system automation mechanized operation purpose.
Embodiment 3
As shown in figure 3, in the present embodiment, the ammoniacal liquor for using 35-40% is desulfurizing agent, by unloading ammonia module 3 by outsourcing ammonia
Water is delivered to tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 1/3 of the volume of tank used for storing ammonia 4.Ammonia module 6 is mended by ammonia by desulfurization
Water is delivered to ammoniacal liquor surge tank 7 from tank used for storing ammonia 4 so that ammoniacal liquor volume is not less than the 2/3 of the cumulative volume of ammoniacal liquor surge tank 7.Ammoniacal liquor
Stocking system 1 is provided with technique water tank 5, and technique water tank 5 mends ammonia module 6 with desulfurization and ammoniacal liquor conveyor module 8 is connected to realize
Periodically equipment, pipeline are cleaned, prevents from blocking.The operational factor of ammoniacal liquor stocking system 1 is by electric signal transmission to programmable
Control device 16.
Independent ammoniacal liquor conveyor module 8, ammoniacal liquor metering module 9 are provided with the present embodiment.By ammoniacal liquor conveyor module 8 by ammonia
Water is delivered to the ammonia atomization device 11 being arranged on three-level preheater 14 and its uptake flue.The control of ammoniacal liquor conveying capacity is main
Completed by ammoniacal liquor metering module 9, ammoniacal liquor measure monitor result is transmitted to programmable control unit in electric signal transmission mode
16。
Blowing plant 10 is provided with the present embodiment, to ensure the stability of spray gun atomizing effect.Blowing plant
10 is that ammonia atomization device 11 provides pressure-stabilized air source, and the gas pressure value is 0.55-0.6MPa.
Flue gas monitoring device 15 is provided with the present embodiment, real-time monitoring can be carried out to the smoke components after desulphurization reaction.
SO in Main Analysis flue gas2Concentration controls desulfurized effect, while being also required to be analyzed ammonia in flue gas composition, controls not anti-
The desulfurizing agent ammoniacal liquor discharge capacity answered.Flue gas monitoring result is by electric signal transmission to programmable control unit 16.
Programmable control unit 16 is collected and comes from ammoniacal liquor stocking system 1, ammoniacal liquor delivery measurement system 2 and cigarette in the present embodiment
The electric signal of gas monitoring device 15, the middle control control operation with field apparatus is collected with the monitoring result for realizing field apparatus, is reached
To desulphurization system automation mechanized operation purpose.
Have to the main advantage of new dry process rotary kiln kiln exit gas desulfurization using above desulfurization technology：1. desulfuration efficiency
Height, because ammoniacal liquor is bigger relative to the alkalescence of conventional desulfurizing agent (such as limestone/lime), so the reaction effect of the ammonia process of desulfurization
More preferably, desulfuration efficiency ＞ 60% can be realized by the actual running results；2. ammoniacal liquor utilization rate is high, and ammoniacal liquor is atomized by atomizing lance
With flue gas good mixing effect, ammoniacal liquor utilization rate ＞ 85% in injection to system；3. simple to operate, this desulphurization system may be incorporated into
Middle control DCS operations, high degree of automation；4. the construction period is short, in this desulfurization technology work progress, without stopping kiln, desulphurization system
With cement producing line independent operating arranged side by side, cement industry production is not interfered with.
Above content is that the utility model is exemplarily described with reference to accompanying drawing, in addition, of the present utility model specific
Implementation is not entirely limited by above description, as long as employing what method design of the present utility model and technical scheme were carried out
The improvement of various unsubstantialities, or it is not engineered by it is of the present utility model design and technical scheme directly apply to other occasions
, in protection domain of the present utility model.
Claims (2)
1. dry-process cement rotary kiln ammonia process semidry process desulfurizer, it is characterised in that：Including ammoniacal liquor storage system, ammoniacal liquor conveying metering system
System, blowing plant, ammonia atomization device, programmable control unit, wherein：
Ammoniacal liquor storage system by tank used for storing ammonia, unload ammonia module, technique water tank and constitute, wherein unloading outlet and the tank used for storing ammonia of ammonia module
Import is connected, and tank used for storing ammonia outlet, technique tank outlet are connected to ammoniacal liquor delivery measurement system by pipeline respectively；
Ammoniacal liquor delivery measurement system is mended ammonia module, ammoniacal liquor metering module and is constituted by ammoniacal liquor surge tank, ammoniacal liquor conveyor module, desulfurization,
Tank used for storing ammonia outlet, technique tank outlet are mended ammonia module inlet and are connected with desulfurization respectively in the ammoniacal liquor storage system, and desulfurization is mended
Ammonia module outlet is connected with ammoniacal liquor surge tank import, and the outlet of ammoniacal liquor surge tank is connected with ammoniacal liquor conveyor module import, ammoniacal liquor storage
Technique tank outlet is also connected with ammoniacal liquor conveyor module import in system, and ammoniacal liquor conveyor module is exported and ammoniacal liquor metering module import
Connection, ammoniacal liquor metering module outlet is connected with ammonia atomization device import；
The wherein one-level preheater body of quality coal in cement kiln systems and the flue gas tedge of the preheater are led in the outlet of ammonia atomization device
In road；
Blowing plant is exported and is connected with ammonia atomization device, by blowing plant for ammonia atomization device provides stabilization
Source of the gas；
Programmable control unit respectively with ammoniacal liquor storage system in unload ammonia module, and ammoniacal liquor delivery measurement system in ammoniacal liquor it is defeated
Module, desulfurization is sent to mend ammonia module, ammoniacal liquor metering module and electrically connect.
2. dry-process cement rotary kiln ammonia process semidry process desulfurizer according to claim 1, it is characterised in that：Also supervised including flue gas
Device is surveyed, the probe portion of the flue gas monitoring device is arranged in the flue gas rising passway of preheater in quality coal in cement kiln systems, flue gas
Monitoring device is connected with programmable control unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039963A (en) * | 2016-07-01 | 2016-10-26 | 合肥水泥研究设计院 | Ammonium-method semi-dry-method desulphurization device and method for dry-method cement kiln |
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2016
- 2016-07-01 CN CN201620697082.4U patent/CN206198984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039963A (en) * | 2016-07-01 | 2016-10-26 | 合肥水泥研究设计院 | Ammonium-method semi-dry-method desulphurization device and method for dry-method cement kiln |
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Address after: 230051 No. 60 Wangjiang East Road, Anhui, Hefei Patentee after: Hefei cement research and Design Institute Co., Ltd. Address before: 230051 No. 60 Wangjiang East Road, Anhui, Hefei Patentee before: Hefei Cement Research Design Institute |