CN206730830U - Denitrating flue gas processing system based on ozone low-temperature oxidation - Google Patents

Denitrating flue gas processing system based on ozone low-temperature oxidation Download PDF

Info

Publication number
CN206730830U
CN206730830U CN201720561922.9U CN201720561922U CN206730830U CN 206730830 U CN206730830 U CN 206730830U CN 201720561922 U CN201720561922 U CN 201720561922U CN 206730830 U CN206730830 U CN 206730830U
Authority
CN
China
Prior art keywords
ozone
unit
flue gas
processing system
denitrating flue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201720561922.9U
Other languages
Chinese (zh)
Inventor
罗范生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Tianze Changning Environment Technology Co Ltd
Original Assignee
Beijing Tianze Changning Environment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Tianze Changning Environment Technology Co Ltd filed Critical Beijing Tianze Changning Environment Technology Co Ltd
Priority to CN201720561922.9U priority Critical patent/CN206730830U/en
Application granted granted Critical
Publication of CN206730830U publication Critical patent/CN206730830U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Treating Waste Gases (AREA)

Abstract

The utility model discloses a kind of denitrating flue gas processing system based on ozone low-temperature oxidation, including ozone preparation unit and denitration process unit, wherein:The ozone preparation unit includes the ozone unit being connected with external air source and the cooling unit being connected with the coolant inlet of the ozone unit, the denitration process unit includes mixing reactor and scrubbing tower, wherein, the entrance of the mixing reactor comes gas phase company with the ozone outlet and flue gas of ozone unit respectively, and its outlet is connected with scrubbing tower.Processing system of the present utility model, it is stable and reliable in work, treatment effeciency is high and energy consumption is low.

Description

Denitrating flue gas processing system based on ozone low-temperature oxidation
Technical field
It the utility model is related to a kind of processing system that flue gas desulfurization and denitrification and flue gas pollutant are carried out using ozone;Category In environmental technology field.
Background technology
The main source of flue gas pollutant is the burning of fuel, these fuel include coal, coke, heavy oil, diesel oil, coal gas, Natural gas etc..And harmful substance caused by adjoint fuel combustion, such as:Sulfur dioxide (SO2), nitrogen oxides (NOx), heavy metal Hg (Hg) etc., its total amount is very big, such as without processing, can cause serious atmosphere pollution and environmental pollution, endanger human health.
Fume treatment is complicated process, from the point of view of Technological Economy and efficiency, is taken off using combining for multiple technologies Except (purification) technology is following developing direction.The nitrogen oxides in flue gas is removed using lower temperature plasma technology, sulphur aoxidizes Thing is at present most in the flue gas of prospect and one of Treatment process, and dielectric barrier discharge (Dielectric Barrier Discharge, DBD) as the common method that low temperature plasma is produced under atmospheric pressure, have in smoke gas treatment field good Application prospect.
1998, the ozone low-temperature oxidation technique (LoTOX) of BOC Co. obtained EPA under U.S.'s woods moral gas The prize of optimal practicable techniques and optimal emission reduction prize.It is a kind of low temperature oxidization process, is (main using ozone oxidation nitrogen oxides If NO and NO2), it is generated high oxide NOx (such as N of nitrogen2O5).These oxides are not only solvable, and have Activity, therefore traditional wet method or desiccation washing process can be used easily to separate it with other dangerous harmful substances.
Patent CN100354022 discloses a kind of ozone oxidation and denitration method of boiler flue gas, and specifically discloses:In temperature The boiler flue low-temperature zone that scope is 100-150 DEG C sprays into ozone O3NO in boiler smoke is oxidized to high price soluble in water State nitrogen oxides NO2、NO3Or N2O5, then boiler smoke is washed using alkali lye to remove the nitrogen oxides in flue gas.However, this A kind of simply preliminary technical scheme.
Numerous commercial Application cases show that ozone low-temperature oxidation technique is used for denitrating flue gas, and it is in construction investment, pollutant Remove, the simplicity of process operating management etc., there is more obvious advantage than other techniques.However, ozone generator Cost, the stability of system and reliability and produce the further genralrlization that expense of ozone etc. constrains the technique.It is for example, existing Denitrating system of some based on ozone, it uses traditional tubular ozone generator mostly, because it endures the drawbacks of denouncing to the fullest extent, this Class processing system substantially belongs to a kind of expensive, extensive, insecure system, can not meet the needs of practicality.On and The ozone low-temperature oxidation denitrating technique that the LoTOX stated is proposed, due to dealing with objects the complexity and processing method of (pollutant) Difference between (technique) case, it is difficult to satisfaction and is actually needed.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of flexible in configuration, upgrading is convenient, both may be used It is seamlessly connected with existing technique, system, can be conveniently expanded (such as combined desulfurization/denitrating system, multiple pollutant collaboration again Denitrating system etc.) flue gas by ozone low-temperature oxidation denitration process system.
To achieve the above object, the utility model uses following technical scheme:
A kind of denitrating flue gas processing system based on ozone low-temperature oxidation, including ozone preparation unit and denitration process list Member, wherein:The ozone preparation unit includes the ozone unit being connected with external air source and the cooling with the ozone unit The connected cooling unit of liquid entrance, the denitration process unit include mixing reactor and scrubbing tower, wherein, the mixing is anti- The entrance of device is answered to come gas phase company with the ozone outlet and flue gas of ozone unit respectively, its outlet is connected with scrubbing tower.
Preferably:The oxygen that the ozone preparation unit also includes being arranged between external air source and ozone unit is located in advance Manage unit.
Preferably:The ozone unit includes at least one set of Ozone generator module, the Ozone generator module bag Include dielectric barrier discharge component.
Preferably:The ozone preparation unit also includes the ozone being arranged between ozone unit and denitration process unit Monitoring assembly, and, the PLC control unit being controlled to each processing equipment and monitoring assembly of ozone preparation unit.
Preferably:The denitration process unit also include being arranged at the ozone outlet of ozone unit and mixing reactor it Between dispensers.
Preferably:The flue gas that the denitration process unit also includes being arranged between smoke inlet and mixing reactor enters Mouth monitor component, and it is arranged at the exhanst gas outlet sensor of the smoke outlet of the scrubbing tower.
Preferably:The denitrating flue gas processing system also includes the cigarette being arranged between smoke inlet and mixing reactor Gas pretreatment unit, the flue gas pretreatment unit are in SCR processing units, SNCR processing units and dedusting temperature reducing unit It is at least one.
Preferably:Cleaning solution storage tank is provided with before the cleaning solution entrance of the scrubbing tower, the waste liquid outlet of scrubbing tower is set Recycling unit is equipped with, clear liquid caused by the recycling cell processing is connected with cleaning solution storage tank.
Preferably:The denitrating flue gas processing system also includes whole processing system being monitored and automated control Central control unit/work station of system.
The beneficial effects of the utility model are that denitrating flue gas processing system of the present utility model is using modularization, intelligence Change, embedded design mode, by being arranged on the monitor component of multiple process points, the production in ozone preparation process can be monitored in real time The operating mode of amount, quality (concentration) and oxidation and denitration process point, realizes the accurate dispensing of ozone and optimal oxidation and denitration Effect.Also, processing system of the present utility model, it is stable and reliable in work, treatment effeciency is high, energy consumption is low, both can be with existing work Skill, processing system and control system etc. are seamlessly connected, and can carry out upgrading expansion again for actual conditions again, flexible in configuration, Upgrading is convenient.
Brief description of the drawings
Fig. 1 shows the structural representation of the denitrating flue gas processing system described in the utility model based on ozone low-temperature oxidation Figure;
Fig. 2 shows that the flue gas based on ozone low-temperature oxidation takes off according to another embodiment of the present utility model Another structural representation of nitre processing system, wherein, ozone preparation unit is not shown.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
As shown in figure 1, the denitrating flue gas processing system described in the utility model based on ozone low-temperature oxidation, including denitration Processing unit 1 and ozone preparation unit 2, wherein, the ozone preparation unit 2 includes ozone unit 25, oxygen pretreatment list Member 24 and cooling unit 22, the entrance of the oxygen pretreatment unit 24 with external air source such as, making oxygen by air separation unit or liquid oxygen Storage tank is connected, and its outlet is connected with the oxygen intake of ozone unit 25.The oxygen for coming from external air source pre-processes list through oxygen Enter after the processing such as first 24 dryings, freezing, filtering, pressure regulation into ozone unit 25.The cooling liquid outlet of the cooling unit 22 It is connected with the coolant inlet of ozone unit 25, the coolant for coming from cooling unit 22 passes through heat exchange in ozone unit Afterwards, send out and be back in the cooling unit 22 by the cooling liquid outlet of ozone unit.It is described smelly in the utility model Oxygen unit 25 includes at least one set of Ozone generator module, and the Ozone generator module includes dielectric barrier discharge (DBD) group Part, the dielectric barrier discharge component can use it is known in the art it is any be applied to produce ozoniferous DBD components, herein no longer Repeat.Ozone outlet and corresponding ozone pipeline of the ozone caused by the ozone unit 25 through unit are delivered to denitration process In unit 1.Further, the ozone pipeline is provided with smelly between the ozone unit 25 and denitration process unit 1 Oxygen monitoring assembly 23, the ozone monitoring component 23 include but is not limited to be applied to ozone caused by monitoring ozone unit 25 Concentration, the sensor of flow and pressure and other parameters, transmitter, instrumentation such as, thermometer, pressure gauge etc..It is in addition, described smelly Oxygen preparation unit 2 also includes the PLC control unit 21 being controlled to each processing equipment and monitor component in unit.
The denitration process unit 1 includes dispensers 19, the mixing reactor 18 that setting is sequentially connected with by pipeline And scrubbing tower 16, wherein, the ozone of the ozone inlet and ozone unit 26 in ozone preparation unit 2 of the dispensers 19 Outlet is connected, and caused ozone enters mixing reactor after dispensers 19 adjust pressure, flow in ozone unit 26 In 15.Preferably, ozone caused by ozone unit 26 is adjusted to multiple-channel output by the dispensers 19, and is connected to mixed Close multiple decanting points of reactor 15.The gas access of the mixing reactor 15 ozone outlet with dispensers 19 respectively And pending smoke inlet is connected, in the mixing reactor 15, flue gas middle or low price state, NO, the NO for being insoluble in water2、 Hg reacts rapidly generation high-valence state, N soluble in water with ozone2O5、Hg2+It is subsequently fed into the bottom of scrubbing tower 16.It is described to wash The top for washing tower 16 is provided with the spray assemblies being connected with the cleaning solution outside scrubbing tower 16, lifting of the cleaning solution through pump group part 17 Enter in scrubbing tower 16 and carry out spray washing to entering the flue gas in scrubbing tower 16 to remove the N in flue gas2O5、Hg2+ Deng pollutant, caused clean gas can be discharged by the exhanst gas outlet on scrubbing tower top after processing, and waste liquid caused by washing Can scrubbed tower bottom waste liquid outlet discharge.In actual mechanical process, the scrubbing tower 16 can use according to actual condition All types of scrubbing tower known in the art, e.g., no-arbitrary pricing scrubbing tower, scrubbing tower containing earthfill rockfill concrete riprap RCC, multisection type scrubbing tower or single hop Formula scrubbing tower etc., also the emitted dose of cleaning solution and spray in scrubbing tower 16 can be adjusted into by the control to pump group part 17 Firing rate degree, to reach optimal clean result.It will be appreciated by persons skilled in the art that in actual mechanical process, it is described Cleaning solution can use clear water, weak lye, desulfurization slurry and other cleaning solutions according to actual conditions, for different processing pair As being acted synergistically with the scrubbing tower of different structure, and then realize combined denitration, desulfurization and demercuration and other effects.In addition, in this reality In new, the denitration process unit 1 may also include the blower fan 13 that is arranged between smoke inlet and mixing reactor 18 with And smoke inlet monitor component 12, the smoke inlet monitor component 12 may include but be not limited to be applied to monitoring into mixing instead The sensor 14 of the inlet flue gas composition before device 18 and the transmitter suitable for regulation flue gas flow, pressure and temperature are answered, Such as flow transmitter, pressure transmitter, temperature transmitter.The also settable cigarette of smoke outlet at the top of scrubbing tower 16 Gas exit sensor 15 with monitor and judge it is scrubbed after flue gas whether can arrange outside.In addition, the denitration process unit 1 is also PLC control unit 11 including carrying out PLC controls to each processing equipment in unit and monitor component.
According to another embodiment of the present utility model, as shown in Fig. 2 the denitrating flue gas processing system may also include and set The flue gas pretreatment unit 41 being placed between smoke inlet and mixing reactor 18, the flue gas pretreatment unit 41 include SCR At least one of processing unit, SNCR processing units and dedusting temperature reducing unit, to cause flue gas first through SCR processing, SNCR Entered back into after processing and/or dedusting, cooling processing in mixing reactor 18 and carry out oxidation reaction with ozone.In addition, described wash Cleaning solution storage tank 42 is additionally provided with before washing the cleaning solution entrance of tower 16, it is single that recycling is additionally provided with the waste liquid outlet of scrubbing tower 16 Member 43, wherein, the recycling unit 43 may include the processing component such as filter assemblies, to be produced to being washed in scrubbing tower 16 Raw waste liquid carries out such as filtration treatment, and clear liquid can be sent into cleaning solution storage tank 42 caused by processing, and caused dope can be carried out Recovery further processing.In addition, denitrating flue gas processing system described in the utility model may also include and whole processing system is entered Row monitoring and central control unit/work station 3 of Automated condtrol.Central control unit/the work station 3 can be according to system In the collection of each monitor component field data and superior instructions, finger is assigned to denitration process unit 1 by PLC control unit 11 Order, by the control to dispensers 19 and blower fan 13, adjust the ozone dosage in mixing reactor 18 and reaction Time, so as to reach optimal flue gas oxidation effectiveness, and by the control to pump group part 17, then it can adjust and washed in scrubbing tower 16 The emitted dose and jet velocity of liquid, to reach clean result optimal in scrubbing tower.In addition, central control unit/the work Make station 3 can also be transmitted by each monitoring assembly in system import smoke components, exiting flue gas composition, flue gas flow, temperature, The data such as pressure and ozone concentration, flow, pressure, instruction is assigned by the phase ozone preparation unit of PLC control unit 21, with reality When according to the flue gas data transmitted adjust the concentration of output ozone, flow and pressure etc., so as to be precisely controlled ozone Injected volume.
The utility model additionally provides a kind of method handled using the denitrating flue gas processing system flue gas, its Processing step includes:1) ozone that flue gas is prepared with ozone preparation unit 1 carries out hybrid reaction in mixing reactor 18 so that Flue gas middle or low price state, NO, the NO for being insoluble in water2, Hg and ozone react generation high-valence state, N soluble in water rapidly2O5、Hg2+;2) Flue gas after ozone oxidation, which is entered in scrubbing tower 16, to be washed to remove the N in flue gas2O5、Hg2+Etc. soluble in water Pollutant, the cleaning flue gases after washing can be arranged outside, and waste liquid can flow back to receipts outside.
Further, the processing step may also include:Before the flue gas oxidation reaction of step 1), first flue gas is carried out SCR processing/SNCR processing and/or dedusting cooling processing.Further, example can be carried out to waste liquid caused by washing in step 2) Such as filtration treatment, clear liquid caused by processing can be back in scrubbing tower as cleaning solution, dope caused by processing it is recyclable enter one Step processing.
Denitrating flue gas processing system of the present utility model, overcoming conventional art can not organically blend with ozone preparation system The drawbacks of, in ozone preparation, distribution, section is launched using systematization, intelligentized design, by setting monitoring group in multiple process points Part, to monitor the operating mode of Yield and quality (concentration) and oxidation and denitration process point in ozone preparation process in real time, realize smelly The accurate dispensing of oxygen and optimal oxidation and denitration effect.Also, processing system of the present utility model, stable and reliable in work, place It is low to manage efficiency high, energy consumption, and can be seamlessly connected with existing technique, processing system and control system etc., can be directed to again actually Situation carries out upgrading expansion again, and flexible in configuration, upgrading is conveniently.
It is only the utility model preferred embodiment in summary, is not used for limiting practical range of the present utility model. Equivalence changes, modification and the change of part that i.e. all contents according to present utility model application the scope of the claims are made, should all belong to Technology category of the present utility model.

Claims (9)

1. a kind of denitrating flue gas processing system based on ozone low-temperature oxidation, including ozone preparation unit and denitration process list Member, it is characterised in that:The ozone preparation unit include the ozone unit that is connected with external air source and with the ozone unit The connected cooling unit of coolant inlet, the denitration process unit includes mixing reactor and scrubbing tower, wherein, it is described The entrance of mixing reactor comes gas phase company with the ozone outlet and flue gas of ozone unit respectively, and its outlet is connected with scrubbing tower.
2. denitrating flue gas processing system according to claim 1, it is characterised in that:The ozone preparation unit also includes setting The oxygen pretreatment unit being placed between external air source and ozone unit.
3. denitrating flue gas processing system according to claim 1, it is characterised in that:The ozone unit includes at least one set Ozone generator module, the Ozone generator module include dielectric barrier discharge component.
4. the denitrating flue gas processing system according to any one in claim 1-3, it is characterised in that:It is prepared by the ozone Unit also includes the ozone monitoring component being arranged between ozone unit and denitration process unit, and, to ozone preparation unit Each processing equipment and the PLC control unit that is controlled of monitoring assembly.
5. denitrating flue gas processing system according to claim 1, it is characterised in that:The denitration process unit also includes setting The dispensers being placed between the ozone outlet and mixing reactor of ozone unit.
6. denitrating flue gas processing system according to claim 1, it is characterised in that:The denitration process unit also includes setting The smoke inlet monitor component being placed between smoke inlet and mixing reactor, and it is arranged at the exhanst gas outlet of the scrubbing tower The exhanst gas outlet sensor at place.
7. existed according to any one in claim 1-3 or the denitrating flue gas processing system described in claim 5 or 6, its feature In:The denitrating flue gas processing system also includes the flue gas pretreatment unit being arranged between smoke inlet and mixing reactor, The flue gas pretreatment unit is at least one of SCR processing units, SNCR processing units and dedusting temperature reducing unit.
8. existed according to any one in claim 1-3 or the denitrating flue gas processing system described in claim 5 or 6, its feature In:Cleaning solution storage tank is provided with before the cleaning solution entrance of the scrubbing tower, the waste liquid outlet of scrubbing tower is provided with recycling list Member, clear liquid caused by the recycling cell processing are connected with cleaning solution storage tank.
9. existed according to any one in claim 1-3 or the denitrating flue gas processing system described in claim 5 or 6, its feature In:The denitrating flue gas processing system also includes being monitored whole processing system and the center control of Automated condtrol is single Member/work station.
CN201720561922.9U 2017-05-19 2017-05-19 Denitrating flue gas processing system based on ozone low-temperature oxidation Active CN206730830U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720561922.9U CN206730830U (en) 2017-05-19 2017-05-19 Denitrating flue gas processing system based on ozone low-temperature oxidation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720561922.9U CN206730830U (en) 2017-05-19 2017-05-19 Denitrating flue gas processing system based on ozone low-temperature oxidation

Publications (1)

Publication Number Publication Date
CN206730830U true CN206730830U (en) 2017-12-12

Family

ID=60566552

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720561922.9U Active CN206730830U (en) 2017-05-19 2017-05-19 Denitrating flue gas processing system based on ozone low-temperature oxidation

Country Status (1)

Country Link
CN (1) CN206730830U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008128A (en) * 2017-05-19 2017-08-04 北京天择昌宁环境技术股份有限公司 Denitrating flue gas processing system and method based on ozone low-temperature oxidation
CN108057340A (en) * 2017-12-21 2018-05-22 中国科学院过程工程研究所 A kind of aluminium oxide calcining flue gas desulfurization and denitrification system and method and purposes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008128A (en) * 2017-05-19 2017-08-04 北京天择昌宁环境技术股份有限公司 Denitrating flue gas processing system and method based on ozone low-temperature oxidation
CN108057340A (en) * 2017-12-21 2018-05-22 中国科学院过程工程研究所 A kind of aluminium oxide calcining flue gas desulfurization and denitrification system and method and purposes
US11090608B2 (en) 2017-12-21 2021-08-17 Institute Of Process Engineering, Chinese Academy Of Sciences System and method for desulfurization and denitrification of alumina calcination flue gas, and use

Similar Documents

Publication Publication Date Title
CN203764106U (en) Flue gas denitrification device implemented by combining SNCR (selective non-catalytic reduction)-ozone oxidation with wet absorption
CN108295565A (en) The method and system of flue gas desulfurization and denitrification
CN212188526U (en) Flue gas treatment system after sludge treatment
CN107008128A (en) Denitrating flue gas processing system and method based on ozone low-temperature oxidation
CN206240299U (en) A coke oven flue exhaust gas purification waste heat recovery equipment
CN206730830U (en) Denitrating flue gas processing system based on ozone low-temperature oxidation
CN204502789U (en) A kind of incinerator smoke denitration desulfurizer
CN112426863A (en) A dry-process double-bag flue gas purification integrated device for co-processing multiple pollutants
CN205760536U (en) A kind of device of oxidizing process gas cleaning desulfurization denitration demercuration
CN204865530U (en) Spout calcium desulfurization low temperature denitrification facility in coal fired boiler flue gas stove
CN105727712B (en) A kind of flue gas desulfurization denitration dust-removing integrated equipment of coal-fired ceramic kiln
CN212548813U (en) Flue gas purification ultralow emission treatment system
CN203916431U (en) A kind of gaseous oxidation is in conjunction with the flue gas combined desulfurization and denitration device of wet absorption
CN106178877A (en) A coke oven flue exhaust gas purification waste heat recovery equipment and process
CN106110850A (en) A kind of flue gas pollutant minimum discharge system and method
CN202823129U (en) Flue gas cleaning device of spray drying method combined with hydrated lime powder spraying
CN204933256U (en) A kind of heavy oil power-plant flue gas denitrating system
CN208482234U (en) A kind of flue gas wet denitration device
CN204952660U (en) Denitration dry desulfurization equipment in coal fired boiler flue gas stove
CN109126441A (en) A kind of intelligent flue gas denitration device
CN211988033U (en) Flue gas denitration system of methane generator set
CN206121410U (en) Flue gas purification system
CN211800052U (en) Desulfurization, denitrification and dust removal integrated flue gas treatment device for cement kiln
CN101306321B (en) Coal smoke desulfurization and dust removal device and its use method
CN204891599U (en) Coal fired boiler flue gas dry desulfurization low temperature denitrification facility

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant