CN208082179U - The governing system of FCC flue gases - Google Patents
The governing system of FCC flue gases Download PDFInfo
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- CN208082179U CN208082179U CN201820266539.5U CN201820266539U CN208082179U CN 208082179 U CN208082179 U CN 208082179U CN 201820266539 U CN201820266539 U CN 201820266539U CN 208082179 U CN208082179 U CN 208082179U
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Abstract
The utility model is related to a kind of governing systems of FCC flue gases,The governing system of the FCC flue gases includes SCR reactors,Waste heat boiler,Pre-duster,Water fog generator,Wet desulphurization device,Wet electrical dust precipitator,Injection apparatus,Temperature-detecting device and sulfur trioxide concentration detection apparatus,The smoke inlet of the SCR reactors is for being passed through FCC flue gases to be administered,The smoke inlet of the outlet flue and waste heat boiler of the SCR reactors,The outlet flue of the waste heat boiler and the smoke inlet of pre-duster,The outlet flue of the pre-duster and the smoke inlet of wet desulphurization device,And the outlet flue of the wet desulphurization device and the smoke inlet of wet electrical dust precipitator pass sequentially through pipeline connection setting respectively,The governing system that the outlet flue of the wet electrical dust precipitator is used to be discharged the FCC flue gases of FCC flue gas the utility model after administering has the advantages that effectively administer the coloured plume in FCC flue gases.
Description
Technical field
The utility model is related to plume Treatment process, more particularly to a kind of governing system of FCC flue gases.
Background technology
Coloured plume refers mainly to fine dust, sulfate, ammonium salt, nitrate, the heavy metal etc. that flue gas is discharged into air through chimney
Fine particle, because of the reasons such as sky background color and skylight photograph, viewing angle, the white of generation, grey, yellow, blue hangover
Phenomenon.
In FCC (Fluid Catalytic Cracking, i.e. catalytic cracking) regenerated flue gas, coloured plume particulate matter
Mainly there is following approach in source：(1) particulate matter that the abrasion of FCC regenerated catalysts is carried out；(2) SCR denitration system sprays ammonia
The NH of escape3With SO2In conjunction with the ammonia sulfate crystal of generation；(3) wet desulphurization chimney tail portion carries the sulfuric acid that slurries crystallization generates
Salt；(4) with heavy metal, the fine particle etc. of flue gas escape in wet desulphurization.
And existing FCC smoke gas treatments then have the following problems：
(1) a large amount of SO3Generate corrosion upstream device
About 0.5~1.5% SO in FCC regenerative combustion process flue gases2SO can be further oxided into3, and in SCR denitration
In the process, sub-fraction SO can also be made using vanadium, tungsten, titanium catalyst series2It is oxidized into SO3, wherein V2O5To oxidation process
With very strong catalytic action.
SO in flue gas3Flue gas acid dew point can be caused to improve, flue-gas temperature must be maintained at higher 10-15 than acid dew-point temperature
DEG C, to avoid upstream device acid corrosion, this will cause generatine set heat efficiency to decline；Secondly, SO3Can in air preheater with SCR denitration
Unreacted NH3It reacts and generates ammonium hydrogen sulfate, ammonium hydrogen sulfate can cause a large amount of flying dust deposition downstream equipments surface, cause
Equipment is corroded.
(2) existing wet desulfurization system can not effectively remove SO3, generate coloured plume
SO into wet desulfurization system flue gas3It is with sulfuric acid and SO3Existing for gaseous molecular form, they are easily
It is dissolved in water, chemically reaction mechanism angle analysis wet desulfurization system slurries are to SO3Should there are very high absorbing and removing efficiency, but thing
It is real to be but far from it：SO in flue gas3It is quickly cooled to acid dew point after into wet desulfurization system hereinafter, the overwhelming majority is by coordinating
Karyomorphism is at tiny SO3Aerosol, they are concentrated mainly on submicron particle size range.Big drop acid mist can in spray column with slurry
Droplet collision is absorbed by slurries in turn to be removed, and followability is good in the gas flow for these aerosol particles, can bypass slurry drops not
The SO for merging with drop, therefore being absorbed by slurries3Removing acts on limited, most of SO3It is still carried over flue gas de-
Outside sulphur tower.
Sulfuric acid mist aerosol containing submicron order in the flue gas of existing flue gas managing technique discharge, can be right when being discharged into air
Light generates scattering process, and so-called blue plumage phenomenon can be formed when more than a certain concentration；After sulfuric acid mist aerosol enters atmospheric environment,
Acid rain, which can be formed, leads to the important as precursors object of PM2.5 in soil acidification and construction material corrosion or air.
(3) waste water, the waste residue of the sulfur removal technology generation after wet absorption dust are difficult to handle
In FCC regenerated flue gas wet absorption techniques, the catalyst particles in flue gas can enter doctor solution, need discharging any waste liquor
To waste water treatment system, by being discharged after oxidation, flocculation and filtration treatment, flow is complicated, operation stability is poor.
The filtering of fine dust is global problem in desulfurization waste liquor, it is extremely difficult to it is up to standard, and filter device easily blocks, it is periodically anti-
It rinses and will produce waste water again, actual motion effect is undesirable.The waste residue moisture content generated in wastewater treatment process is higher, is not easy to
Disposition.
(4) granular material discharged after wet desulphurization to be difficult to reach new standard requirement
Conventional FCC dedustings use wet absorption technique, and efficiency of dust collection is about 50%, (increase particulate matter by process modification
With the collision, cohesion and time of contact of droplet etc.) efficiency of dust collection, but not more than 80% can be improved, it is caught particularly with PM2.5
Collection rate is up to 60%.The On Fcc Waste Heat Boiler soot blowing stage is difficult to reach the existing national granular material discharged standard in place.
(5) high fume temperature, smoke temperature change greatly
FCC regenerated flue gas is after waste heat boiler, and 180~240 DEG C of normal temperature is big to desulphurization system erosion resistant coating thermal shock,
Anticorrosive coating peeling is easy to cause to fall off.
In addition, when desulfurizing tower inlet flue gas temperature high circulation slurries spray is combined with high-temperature flue gas, since the heat exchange of slurries is evaporated,
A large amount of fine particle crystal is will produce, a large amount of aerosol is caused to enter chimney with flue gas, leads to the problem of coloured plume.And
And not there is the governance approach for effectively administering above-mentioned coloured plume in the prior art.
Utility model content
Technical problem to be solved in the utility model is：A kind of governing system of FCC flue gases is provided, can effectively be administered
Coloured plume in FCC flue gases.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of governing system of FCC flue gases, including it is SCR reactors, waste heat boiler, pre-duster, water fog generator, wet
Method desulfurizer, wet electrical dust precipitator, injection apparatus, temperature-detecting device and sulfur trioxide concentration detection apparatus, the SCR are anti-
Answer the smoke inlet of device for being passed through FCC flue gases to be administered, the outlet flue of the SCR reactors and the smoke inlet of waste heat boiler,
The outlet flue of the waste heat boiler and smoke inlet of pre-duster, the outlet flue of the pre-duster and wet desulphurization device enter
The smoke inlet of the outlet flue and wet electrical dust precipitator of mouth and the wet desulphurization device passes sequentially through pipeline connection and sets respectively
It sets, the outlet flue of the wet electrical dust precipitator is used to that the FCC flue gases after administering to be discharged；
The water fog generator is set in the connecting line between the wet desulphurization device and pre-duster, and described
Water fog generator is close to the smoke inlet of the wet desulphurization device, and the atomizing nozzle of the water fog generator is equipped with water mists spray
Mouth, the injection apparatus include the first jet exit and the second jet exit, the company between the SCR reactors and waste heat boiler
It takes over road to be connected to first jet exit, the connecting line between the waste heat boiler and pre-duster is sprayed with described second
Exit wound of bullet is connected to；
The temperature-detecting device is set at the smoke inlet of the wet desulphurization device；
The sulfur trioxide concentration inspection is respectively equipped at the outlet flue of the SCR reactors and at the outlet flue of waste heat boiler
Survey device.
Further, close to the outlet flue of the SCR reactors, second jet exit leans on first jet exit
The outlet flue of the nearly waste heat boiler.
Further, further include wastewater treatment equipment, the bottom of the wet desulphurization device is equipped with waste water discharge opening, described
The outlet flue of wet desulphurization device is set to the top of wet desulphurization device, and the wastewater treatment equipment includes waterwater entrance, described
Waste water discharge opening is connected to the waterwater entrance.
Further, further include smoke machine, the smoke inlet of the smoke machine is for being passed through FCC flue gases to be administered, the smoke machine
Outlet flue and SCR reactors smoke inlet pipeline connection.
Further, the pre-duster is electrostatic precipitator, electrostatic fabric filter or bag filter.
Further, further include smoke re-heater, the outlet flue of the wet electrical dust precipitator and smoke re-heater enter cigarette
Mouth connection, the outlet flue of the smoke re-heater are connected to chimney, are connected to external environment via chimney.
The beneficial effects of the utility model are：
(1) design it is above-mentioned include SCR reactors, waste heat boiler, pre-duster, water fog generator, wet desulphurization device,
Wet electrical dust precipitator, injection apparatus, temperature-detecting device and sulfur trioxide concentration detection apparatus FCC flue gases governing system and
Corresponding administering method carries out pre- dedusting and removing SO before desulfurization3, when effectively reducing desulfurization in wet desulphurization device
Grain object content, reduce in desulfurization wastewater treating capacity and later discharge chimney can particulates object concentration；
It (2) can effective multiple pollutants such as desulfurization fine particle, droplet, heavy metal, aerosol；
(3) reduce SCR reactors the escaping of ammonia and SO3Corrosion to upstream device；
(4) water fog generator uses mist-generating nozzle, water mist grain size to be less than 400 μm, to which its surface area and density are high,
Can be achieved fast cooling, water mists adsorption capacity is strong, can effectively with particulate matter, SO3In conjunction with Caragana seed pests, to can subsequently be taken off
Sulphur spray washing；
(5) increase wet electrical dust precipitator after desulfurization, can realize aerosol, ammonium salt, inorganic salts and heavy metal etc. in FCC flue gases
The collaboration of multiple pollutant is administered.
Description of the drawings
Fig. 1 is the overall structure diagram of the governing system of the FCC flue gases of the utility model embodiment.
Label declaration
1, FCC apparatus；2, SCR reactors；3, waste heat boiler；4, pre-duster；5, water mist fills；6, wet desulphurization fills
It sets；7, wet electrical dust precipitator；8, injection apparatus；9, temperature-detecting device；10, sulfur trioxide concentration detection apparatus；11, at waste water
Manage device；12, smoke machine；13, smoke re-heater；14, chimney.
Specific implementation mode
For technology contents, the objects and the effects of the utility model are described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is：It includes SCR reactors, waste heat boiler, pre-duster, water to design above-mentioned
Mist generation device, wet desulphurization device, wet electrical dust precipitator, injection apparatus, temperature-detecting device and sulfur trioxide Concentration Testing
The governing system of the FCC flue gases of device.
Please refer to Fig. 1, the governing system of FCC flue gases, including SCR reactors 2, waste heat boiler 3, pre-duster 4, water mist hair
Generating apparatus 5, wet desulphurization device 6, wet electrical dust precipitator 7, injection apparatus 8, temperature-detecting device 9 and sulfur trioxide Concentration Testing
Device 10, the smoke inlet of the SCR reactors 2 are described for being passed through FCC flue gases to be administered (by being discharged in FCC apparatus 1)
The outlet flue of SCR reactors 2 enters cigarette with the smoke inlet of waste heat boiler 3, the outlet flue of the waste heat boiler 3 and pre-duster 4
Mouth, the outlet flue of the pre-duster 4 and the smoke inlet of wet desulphurization device 6 and the outlet flue of the wet desulphurization device 6
Pipeline connection setting is passed sequentially through respectively with the smoke inlet of wet electrical dust precipitator 7, and the outlet flue of the wet electrical dust precipitator 7 is used for
FCC flue gases after discharge improvement (by being discharged in chimney 14)；
The water fog generator 5 is set in the connecting line between the wet desulphurization device 6 and pre-duster 4, and
Close to the smoke inlet of the wet desulphurization device 6, the atomizing nozzle of the water fog generator 5 is equipped with the water fog generator 5
Mist-generating nozzle, the injection apparatus 8 include the first jet exit and the second jet exit, the SCR reactors 2 and waste heat pot
Connecting line between stove 3 is connected to first jet exit, the connecting tube between the waste heat boiler 3 and pre-duster 4
Road is connected to second jet exit；
The temperature-detecting device 9 is set at the smoke inlet of the wet desulphurization device 6；
The sulfur trioxide concentration is respectively equipped at the outlet flue of the SCR reactors 2 and at the outlet flue of waste heat boiler 3
Detection device 10.
The utility model also provides a kind of administering method of FCC flue gases, is controlled using coloured plume in above-mentioned FCC flue gases
Reason system carries out, and includes the following steps：
Step (1)：By Ca (OH)2、NaHCO3Or Na2CO3Solid is smashed into graininess, obtains feed particulate material；
Step (2)：When the FCC flue gases administered pass through SCR reactors and waste heat boiler respectively, sulfur trioxide concentration is utilized
Detection device is respectively to the concentration of the sulfur trioxide in the flue gas at the outlet flue of SCR reactors and at the outlet flue of waste heat boiler
It is detected, and according to testing result, calculating separately at the outlet flue for obtaining SCR reactors and at the outlet flue of waste heat boiler needs
The molar concentration for the sulfur trioxide to be removed；
Step (3)：Using injection apparatus by the feed particulate material obtained in step (1) respectively by the first jet exit and
Second jet exit is sprayed, to remove the sulfur trioxide in flue gas；The first jet exit sprays in per unit volume flue gas
The emitted dose of feed particulate material be to need the sulfur trioxide removed to rub at the outlet flue for the SCR reactors that step (2) obtains
The emitted dose of 1-3 times of your concentration, the feed particulate material that the second jet exit sprays in per unit volume flue gas obtains for step (2)
1-3 times of the molar concentration of the sulfur trioxide removed is needed at the outlet flue of the waste heat boiler obtained；
Step (4)：Flue gas passes through pre-duster, the CaSO for generating step (3) using pre-duster4Particulate matter, Na2SO3
Particulate matter or the removing of heavy metal particles object；
Step (5)：Flue gas using water fog generator by before discharge in pre-duster and entering wet desulphurization device, being sprayed
Spill the water droplet that diameter is less than 400 μm, cools down to flue gas；The temperature of flue gas is examined using temperature-detecting device
It surveys, and adjusts the fountain height of water droplet in real time so that the temperature that temperature-detecting device detects is maintained at 90-110 DEG C；
Step (6)：Flue gas pass through wet desulphurization device, using wet desulphurization device by flue gas sulfur dioxide and part
Sulfur trioxide removing；
Step (7)：Flue gas passes through wet electrical dust precipitator, using wet electrical dust precipitator by sulfate, the nitrate in flue gas
Or the removing of heavy metal aerosol, obtain neat stress.
As can be seen from the above description, the beneficial effects of the utility model are：
(1) design it is above-mentioned include SCR reactors, waste heat boiler, pre-duster, water fog generator, wet desulphurization device,
Wet electrical dust precipitator, injection apparatus, temperature-detecting device and sulfur trioxide concentration detection apparatus FCC flue gases governing system and
Corresponding administering method carries out pre- dedusting and removing SO before desulfurization3, when effectively reducing desulfurization in wet desulphurization device
Grain object content, reduce in desulfurization wastewater treating capacity and later discharge chimney can particulates object concentration；
It (2) can effective multiple pollutants such as desulfurization fine particle, droplet, heavy metal, aerosol；
(3) reduce SCR reactors the escaping of ammonia and SO3Corrosion to upstream device；
(4) water fog generator uses mist-generating nozzle, water mist grain size to be less than 400 μm, to which its surface area and density are high,
Can be achieved fast cooling, water mists adsorption capacity is strong, can effectively with particulate matter, SO3In conjunction with Caragana seed pests, to can subsequently be taken off
Sulphur spray washing；
(5) increase wet electrical dust precipitator after desulfurization, can realize aerosol, ammonium salt, inorganic salts and heavy metal etc. in FCC flue gases
The collaboration of multiple pollutant is administered.
In the governing system of FCC flue gases：
Further, first jet exit is close to the outlet flue of the SCR reactors 2, second jet exit
Close to the outlet flue of the waste heat boiler 3.
Further, further include wastewater treatment equipment 11, the bottom of the wet desulphurization device 6 is equipped with waste water discharge opening,
The outlet flue of the wet desulphurization device 6 is set to the top of wet desulphurization device 6, and the wastewater treatment equipment 11 enters including waste water
Mouthful, the waste water discharge opening is connected to the waterwater entrance.
Further, further include smoke machine 12, the smoke inlet of the smoke machine 2 for being passed through FCC flue gases to be administered, i.e., with
The outlet flue pipeline connection of FCC apparatus 1, the outlet flue of the smoke machine 12 and the smoke inlet pipeline connection of SCR reactors 2.
Further, the pre-duster 4 is electrostatic precipitator, electrostatic fabric filter or bag filter.
Further, further include smoke re-heater 13 (i.e. GGH), the outlet flue and flue gas of the wet electrical dust precipitator 7 are again
The smoke inlet of hot device 13 is connected to, and the outlet flue of the smoke re-heater 13 is connected to chimney 14, via chimney 14 and external environment
Connection.
In the administering method of FCC flue gases：
Further, the sprinkling direction of the water droplet and flue gas flow to it is identical.
Further, in step (5), the temperature that control temperature-detecting device detects is maintained at 100 DEG C.
Further, the neat stress that step (7) obtains is first via smoke re-heater, then passes through smoke stack emission to external environment
In.
Fig. 1 is please referred to, the embodiments of the present invention one are：
The governing system of the FCC flue gases of the present embodiment, including it is SCR reactors 2 (SCR is selective catalytic reduction), remaining
Heat boiler 3, pre-duster 4, water fog generator 5, wet desulphurization device 6, wet electrical dust precipitator 7, injection apparatus 8, temperature inspection
Device 9 and sulfur trioxide concentration detection apparatus 10 are surveyed, the smoke inlet of the SCR reactors 2 is for being passed through FCC flue gases to be administered
(by being discharged in FCC apparatus 1, FCC is Fluid Catalytic Cracking, i.e. catalytic cracking), the SCR reactors 2
The smoke inlet of outlet flue and waste heat boiler 3, the waste heat boiler 3 outlet flue and pre-duster 4 smoke inlet, described pre- remove
The outlet flue of dirt device 4 is removed with the smoke inlet of wet desulphurization device 6 and the outlet flue of the wet desulphurization device 6 with wet type electricity
The smoke inlet of dirt device 7 passes sequentially through pipeline connection setting respectively, after the outlet flue of the wet electrical dust precipitator 7 is used to that improvement to be discharged
FCC flue gases (by being discharged in chimney 14)；
The water fog generator 5 is set in the connecting line between the wet desulphurization device 6 and pre-duster 4, and
Close to the smoke inlet of the wet desulphurization device 6, the atomizing nozzle of the water fog generator 5 is equipped with the water fog generator 5
Mist-generating nozzle, the injection apparatus 8 include the first jet exit and the second jet exit, the SCR reactors 2 and waste heat pot
Connecting line between stove 3 is connected to first jet exit, the connecting tube between the waste heat boiler 3 and pre-duster 4
Road is connected to second jet exit；
The temperature-detecting device 9 is set at the smoke inlet of the wet desulphurization device 6；
The sulfur trioxide concentration is respectively equipped at the outlet flue of the SCR reactors 2 and at the outlet flue of waste heat boiler 3
Detection device 10.
First jet exit is close to the outlet flue of the SCR reactors 2, and second jet exit is close to described remaining
The outlet flue of heat boiler 3.
Further include wastewater treatment equipment 11, the bottom of the wet desulphurization device 6 is equipped with waste water discharge opening, and the wet method is de-
The outlet flue of sulphur device 6 is set to the top of wet desulphurization device 6, and the wastewater treatment equipment 11 includes waterwater entrance, described useless
Water outlet is connected to the waterwater entrance.
Further include smoke machine 12, the smoke inlet of the smoke machine 2 and the outlet flue pipeline connection of FCC apparatus 1, the smoke machine 12
The smoke inlet pipeline connection of outlet flue and SCR reactors 2.
The pre-duster 4 is electrostatic precipitator, electrostatic fabric filter or bag filter.
Further include smoke re-heater 13 (i.e. GGH, i.e. Gas Gas Heater), the outlet flue of the wet electrical dust precipitator 7
Be connected to the smoke inlet of smoke re-heater 13, the outlet flue of the smoke re-heater 13 is connected to chimney 14, via chimney 14 with
External environment is connected to.
The administering method of the FCC flue gases of the present embodiment, includes the following steps：
1, prepare the Ca (OH) of solid2、NaHCO3Or Na2CO3, by the Ca (OH) of solid2、NaHCO3Or Na2CO3It is ground into
Graininess；
2, SO in flue gas at dynamic monitoring SCR reactors outlet flue and at waste heat boiler outlet flue3Concentration, obtain SO3's
Concentration target value, and according to testing result and SO3Concentration target value, calculate separately obtain SCR reactors outlet flue at and
The molar concentration of the sulfur trioxide removed is needed at the outlet flue of waste heat boiler；
3, according to SO in the flue gas at the outlet flue of SCR reactors3Concentration, to SCR reactor outlet flues at injection by
The Ca (OH) obtained in step A2、NaHCO3Or Na2CO3Particle, Ca (OH) in per unit volume flue gas2、NaHCO3Or Na2CO3Powder
The emitted dose at end is that the position needs the SO removed31-3 times of molal quantity, while according to heat boiler outlet flue gas SO3's
Concentration sprays the Ca (OH) by being obtained in step A also into the flue gas positioned at heat boiler outlet flue2、NaHCO3Or Na2CO3
Particle, Ca (OH) in per unit volume flue gas2、NaHCO3Or Na2CO3The emitted dose of powder is that the position needs the SO removed3's
1-3 times of molal quantity passes through Ca (OH)2、NaHCO3Or Na2CO3Particle and the SO in flue gas3Gas-solid reaction occurs, it will be in flue gas
SO3Removing；
4, pre-duster is provided between wet desulphurization device and waste heat boiler, the pre-duster may be used electrostatic and remove
Dirt device, electrostatic fabric filter or bag filter；
5, step 2, the Ca (OH) described in 32、NaHCO3Or Na2CO3Particle and SO3React the CaSO generated4Or Na2SO3?
Grain object, heavy metal particles object are removed before being desulfurized by pre-duster.
6, the water fog generator passed through into flue gas before wet desulphurization device, water fog generator are sprayed using water mists
Mouth ensures that water droplet diameter is less than 400um, and surface area and density are higher, it can be achieved that flue gas fast cooling.Water mists spray
Mouth sprays water droplet and uses suitable spray form identical with flue gas flow direction.Water mist is controlled according to dynamic temperature monitoring before desulfurization entrance
The water spray of the water droplet of generating means sprinkling, to realize desulfurization inlet temperature for 100 DEG C or so；
7, the flue gas sprayed by water fog generator enters wet desulphurization device removing SO2And part SO3；
8, the fine graineds such as sulfate, nitrate, heavy metal aerosol that the flue gas after desulfurization process carries are wet entering
Terminal processes are carried out when formula electric precipitator, it can be achieved that multiple pollutant collaboration improvement, finally realizes that coloured plume is administered.
It can effectively be administered in conclusion the governing system and its administering method of FCC flue gases provided by the utility model have
The advantages of coloured plume in FCC flue gases.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of governing system of FCC flue gases, which is characterized in that including SCR reactors, waste heat boiler, pre-duster, water mist hair
Generating apparatus, wet desulphurization device, wet electrical dust precipitator, injection apparatus, temperature-detecting device and sulfur trioxide concentration detection apparatus,
The smoke inlet of the SCR reactors is for being passed through FCC flue gases to be administered, the outlet flue and waste heat boiler of the SCR reactors
Smoke inlet, the waste heat boiler outlet flue and the smoke inlet of pre-duster, the outlet flue of the pre-duster and wet method it is de-
The smoke inlet of the outlet flue and wet electrical dust precipitator of the smoke inlet of sulphur device and the wet desulphurization device passes sequentially through respectively
Pipeline connection is arranged, and the outlet flue of the wet electrical dust precipitator is used to that the FCC flue gases after administering to be discharged；
The water fog generator is set in the connecting line between the wet desulphurization device and pre-duster, and the water mist
For generating means close to the smoke inlet of the wet desulphurization device, the atomizing nozzle of the water fog generator is equipped with mist-generating nozzle,
The injection apparatus includes the first jet exit and the second jet exit, the connection between the SCR reactors and waste heat boiler
Pipeline is connected to first jet exit, and the connecting line between the waste heat boiler and pre-duster is sprayed with described second
Outlet；
The temperature-detecting device is set at the smoke inlet of the wet desulphurization device；
The sulfur trioxide Concentration Testing dress is respectively equipped at the outlet flue of the SCR reactors and at the outlet flue of waste heat boiler
It sets.
2. the governing system of FCC flue gases according to claim 1, which is characterized in that first jet exit is close to institute
State the outlet flue of SCR reactors, outlet flue of second jet exit close to the waste heat boiler.
3. the governing system of FCC flue gases according to claim 1, which is characterized in that further include wastewater treatment equipment, it is described
The bottom of wet desulphurization device is equipped with waste water discharge opening, and the outlet flue of the wet desulphurization device is set to the top of wet desulphurization device
Portion, the wastewater treatment equipment include waterwater entrance, and the waste water discharge opening is connected to the waterwater entrance.
4. the governing system of FCC flue gases according to claim 1, which is characterized in that further include smoke machine, the smoke machine enters
Mouth is for being passed through FCC flue gases to be administered, the outlet flue of the smoke machine and the smoke inlet pipeline connection of SCR reactors.
5. the governing system of FCC flue gases according to claim 1, which is characterized in that the pre-duster is electrostatic precipitation
Device, electrostatic fabric filter or bag filter.
6. the governing system of FCC flue gases according to claim 1, which is characterized in that further include smoke re-heater, it is described wet
The outlet flue of formula electric precipitator is connected to the smoke inlet of smoke re-heater, and the outlet flue of the smoke re-heater is connected to chimney,
It is connected to external environment via chimney.
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| CN201820266539.5U CN208082179U (en) | 2018-02-24 | 2018-02-24 | The governing system of FCC flue gases |
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| CN201820266539.5U CN208082179U (en) | 2018-02-24 | 2018-02-24 | The governing system of FCC flue gases |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187463A (en) * | 2018-02-24 | 2018-06-22 | 厦门锐传科技有限公司 | The governing system and its administering method of FCC flue gases |
| CN111561793A (en) * | 2020-05-28 | 2020-08-21 | 中国石油化工股份有限公司 | FCC catalyst spray drying tail gas heat recovery system and method thereof |
-
2018
- 2018-02-24 CN CN201820266539.5U patent/CN208082179U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108187463A (en) * | 2018-02-24 | 2018-06-22 | 厦门锐传科技有限公司 | The governing system and its administering method of FCC flue gases |
| CN111561793A (en) * | 2020-05-28 | 2020-08-21 | 中国石油化工股份有限公司 | FCC catalyst spray drying tail gas heat recovery system and method thereof |
| CN111561793B (en) * | 2020-05-28 | 2024-02-06 | 中国石油化工股份有限公司 | FCC catalyst spray drying tail gas heat recovery system and method thereof |
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