CN108246038A - The smoke-gas wet desulfurization gas-liquid-solid separating technology and system of anti-clogging long-term operation - Google Patents
The smoke-gas wet desulfurization gas-liquid-solid separating technology and system of anti-clogging long-term operation Download PDFInfo
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- CN108246038A CN108246038A CN201810266178.9A CN201810266178A CN108246038A CN 108246038 A CN108246038 A CN 108246038A CN 201810266178 A CN201810266178 A CN 201810266178A CN 108246038 A CN108246038 A CN 108246038A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
Abstract
The present invention relates to device smoke-gas wet desulfurization gas-liquid-solid separation technology field is urged again, more particularly, to the smoke-gas wet desulfurization gas-liquid-solid separating technology and system of a kind of anti-clogging long-term operation.The technique includes the following steps：By flue gas by cylindrical structure to carry out fluid flow state adjustment process, the large scale drop liquid foam and particulate matter carried in flue gas completes sedimentation separation according to Stokes separation theorem；To flue gas spray washing liquid；Flue gas enters leatherleaf separator, and the heavy phase in flue gas carries matter fine droplet liquid foam and particulate matter coalescence increase, and separation is forced from flue gas.The technique of the present invention, compared with prior art, the present invention can be obviously improved particle-resistant object plugging performance, so as to reduce technique and device operation pressure drop.And the present invention is improved separating effect and separative efficiency, is effectively reduced and avoided Separation process arrangements flue gas emission the secondary risk accidents of environment protection emissions such as " float rain " " descending salt " occur using multi-stage separation.
Description
Technical field
The present invention relates to device smoke-gas wet desulfurization gas-liquid-solid separation technology field is urged again, more particularly, to a kind of anti-clogging
The smoke-gas wet desulfurization gas-liquid-solid separating technology and system of long-term operation.
Background technology
Petroleum refining, derived energy chemical, natural gas processing and conveying, offshore platform and land terminal oil-gas mining, metallurgy,
In the industry fields such as thermoelectricity, coking, papermaking, environmental protection, pharmacy and food, can almost generate without exception many flue gases need by
Isolation of purified qualified discharge.Especially Catalytic Unit wet desulfurization flue gas foam removal dust collecting process, sulphur unit tail gas burn
Smoke-gas wet desulfurization foam removal dust collecting process and circulating fluidized bed combustion coal boiler wet method desulfurization flue gas foam removal dust collecting process process, work
Condition is complicated, and discharge capacity is big, saliferous is high containing Dust Capacity height, sulfur and nitrogen oxides content, accident flue gas high/low temperature alternation
Pulse is destructive strong, and the requirement of fume treatment discharge index is stringent.The anti-crystal salt of long-term operation and dust particle block, are low
Run pressure drop, high stable separative efficiency, low-maintenance cost the smoke-gas wet desulfurization gas for urging device anti-clogging long-term operation again
Solid-liquor separation technique is the key technology that domestic and international enterprise is badly in need of at present.
At present, above-mentioned industry field both at home and abroad many enterprises, especially oil refining industry and enterprise that device is urged to resist again is stifled
In the smoke-gas wet desulfurization gas-liquid-solid separating technology for filling in long-term operation, use more and carried from nineteen ninety for Introduced From Abroad technique packet
The conventional washing tower flue gas foam removal dedusting isolation technics being simply configured, such as the separation of hyperbolic cone, filler separation, simple baffling tabula rasa point
From technology etc..The external technique packet that these current years introduce carries isolation technics, although can meet environment row not stringent at that time
Standard requirement is put, simultaneously because being limited to by technology at that time, the separating technology technology of the easy configuration can not meet Chinese state
Degree inside carry out in the recent period, harsh Europe and the more than fume environment protection discharge standard of U.S. domestic standard shoulder to shoulder.These are heavy
Main deficiency existing for the smoke-gas wet desulfurization gas-liquid-solid separating technology and application apparatus of device anti-clogging long-term operation is urged to exist
In：1) operating flexibility space is small, and long-term operation is not smooth, faults frequent, it is impossible to adapt to practical fluctuation operating mode.2) process system
Operation pressure drop is risen violently soon, and internals are often blocked by dust and salting-out crystallization object, and operation and maintenance difficulty is big.3) it is not suitable with what is occurred frequently
Flue gas high/low temperature alternating impulse accident conditions, such as " running agent " operating mode, descending liquid circulatory system all standing operating mode lead to internals in accident
Deform cataclastic failure under operating mode.4) to flue gas low separation efficiency, often there is " float rain " " salt reduction " phenomenon in technique discharge flue gas
Polluting device ambient atmosphere environment and operation field, enterprise must arrange personnel interval to carry out water-washing desalting stain to operation field in several days
And winter shovel salt work, enterprise is often connected to masses' complaint and local environmental protection administration punishes.
For example, tens of sets that refinery company builds up in domestic several big systems urge device again, using the famous technique in the U.S.
The included washing tower flue gas foam removal dedusting isolation technics of packet (such as Exxon Neftegas Limited WGS wet fuel gas desulfurizing technologies packet, Du Pont-
Bell's lattice company EDV wet fuel gas desulfurizing technology packets etc.), but there are above-mentioned main problems in device actual motion.And domestic number
More Di Lian enterprises and the private enterprise are measured, it is heavy to urge device flue gas overall process and emission behaviour even worse.To find out its cause, owner
The original separating technology of selection and internals design side or supplier, lack the design of dynamics isolation technics accurate calculation and configuration is put down
Platform is only designed, manufactures, configuration separation internals, causing to wash the operation of tower flue gas foam removal dedusting separating technology from beginning by rule of thumb
It is problematic in that whole.
There are some enterprises also to carry isolation technics imitating above-mentioned external technique packet both at home and abroad, attempt pair there are also enterprise
Above-mentioned foreign countries' technique packet carries isolation technics and is transformed, but is held due to lacking depth in itself to dynamics isolation technics,
It has no ability to build accurate dynamics separation calculating design and configuration system workbench, often take a part for the whole.Over the past two years, stone
Oily refinery device owners also attempt to use aforementioned likeness in form and refreshing non-various improvement are done under harsh environment protection emission pressure
Method, but be difficult to obtain satisfied operational effect always.So many enterprises are there is an urgent need to provide, a kind of energy is satisfied to solve aforementioned ask
The smoke-gas wet desulfurization gas-liquid-solid separating technology for urging device anti-clogging long-term operation again of topic.
Invention content
The purpose of the present invention is to provide a kind of smoke-gas wet desulfurization gas-liquid-solid separating technologies of anti-clogging long-term operation
And system, it is risen violently soon with solving process system operation pressure drop in the prior art, internals are often by dust and salting-out crystallization object
It blocks, operation and maintenance difficulty is big and the inferior technical problem of low separation efficiency.
A kind of smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation provided by the invention, the technique packet
Include following steps：
By flue gas by cylindrical structure to carry out fluid flow state adjustment process, flue gas is during fluid flow state adjustment
Fully develop, the large scale drop liquid foam and particulate matter carried in flue gas completes sedimentation separation according to Stokes separation theorem；
To flue gas spray washing liquid, the microscopic grains particulate matter in flue gas be washed liquid fully soak and coalesce to be formed it is larger
Size heavy phase carries particulate matter, a part of particle object sedimentation separation；
Flue gas enters leatherleaf separator, and the heavy phase in flue gas carries matter fine droplet liquid foam and particulate matter coalescence increase,
Separation is forced from flue gas.
Further, the flue gas being directed through after the separation of leatherleaf separator using gas operated device is entered in chimney.
Further, the liquid and particulate collection isolated from leatherleaf separator are discharged, and are isolated with flue gas.
Further, the gas after being detached out of leatherleaf separator is entered into chimney from top by gas operated device, point
The liquid separated out collects discharge from below.
Further, the present invention provides a kind of smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation,
The system includes desulfurization tower shell, eddy flow wash mill and leatherleaf separator；The bottom of the desulfurization tower shell is cylindrical,
And form fluid flow state adjustment area；Flue gas fully develops in fluid flow state adjustment area, the large scale drop liquid carried in flue gas
Foam and particulate matter complete sedimentation separation according to Stokes separation theorem；The eddy flow wash mill is fixed on the desulfurization tower casing
On the side wall of body, and positioned at the top in fluid flow state adjustment area, for flue gas spray washing agent, flue gas washing to be soaked；
The leatherleaf separator is fixed on the inside of the desulfurization tower shell, for the heavy phase in flue gas to be carried matter fine droplet liquid
Foam and particulate matter coalescence increase, and separation is forced from flue gas.
Further, gas operated device is further included；The gas operated device is arranged on the top of the leatherleaf separator, described
The lower end of gas operated device is connected with the top of the leatherleaf separator, and lower end is used to connect with chimney entrance；The air guide dress
It puts that the gas after detaching is guided to enter in chimney.
Further, descending liquid device is further included；The descending liquid device includes the gentle envelope device of descending liquid pipeline；The descending liquid pipeline
Upper end connected with the lower end of the leatherleaf separator, the air seal is arranged on the lower end of the descending liquid pipeline.
Further, the descending liquid pipeline includes vertical duct and transverse pipe；The upper end of the vertical duct and the leatherleaf point
Lower end connection from device, the lower end of the vertical duct is connected with the transverse pipe；The air seal is arranged on the transverse pipe
One end.
Further, the eddy flow wash mill includes fixing piece and swirl flow nozzle；One end of the fixing piece is fixed on
On the outer wall of the desulfurization tower shell, the other end is located at the inside of the desulfurization tower shell, and the eddy flow spray is fixed at the end
Head.
The present invention provides a kind of smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation, and flue gas Primordial Qi is first
The cylindrical space of fluid flow state adjustment process is introduced into, flue gas axially slows down, and flue gas fluidised form fully develops, each fluid in cross section
The diminution of infinitesimal Momentum And Kinetic Energy difference obtains homogenization distribution, and the heavy phase of large-size carries matter in accordance with Stokes' law from light phase
Preliminary sedimentation separation is able in flue gas.The heavy phase that coming out still remaining from fluid flow state adjustment process has reduced size carries the cigarette of matter
Gas, to the flue gas spray washing agent, a large amount of liquid foams generated through its injection carry matter to reduced size heavy phase remaining in flue gas
Progress fully washing wetting, the heavy phase after wetting carry matter and then assemble to form size bigger, the heavy phase of proportion bigger carrying matter
Grain, a part of particle object in accordance with Stokes' law continue the sedimentation separation from flue gas stream, and rest part then with flue gas into
Enter leatherleaf separator.The remaining heavy phase that flue gas carries wetting carries matter fine droplet liquid foam and particulate matter, enters according to stream
Body dynamics isolation technics is precisely required in the leatherleaf internals aerodynamics runner of the special construction of setting, is forced to carry out efficient
Kinetic energy momentum converts, fluid along small radius of turn high speed rotation, the heavy phase of wetting carry between matter particle mutually efficiently collision and
Coalescence increase, increased heavy phase carry matter and make in the vector separation field including radial centrifugal force field, non-radial super gravity field
It is detached, and collect the liquid film to be formed and constantly thickened in leatherleaf internals group wall surface from flue gas with lower pressure, and it is residual in flue gas stream
The more minute liquid foam liquid mist and dust particle stayed once strike liquid film surface, i.e., are converted to huge surface from fluid dynamic energy
The liquid film of free energy is trapped and is further collected into liquid film, and the liquid film that these continuous renewals thicken falls in gravity leading role
It is discharged to leatherleaf separator bottom.
The technique of the present invention, in the prior art compared with by the way of filler, curved surface cone, baffle plate etc. are traditional, this hair
It is bright to be obviously improved particle-resistant object plugging performance, so as to reduce technique and device operation pressure drop.And the present invention is using multistage point
From raising separating effect and separative efficiency effectively reduce and avoid Separation process arrangements flue gas emission " float rain " " descending salt " occur
Wait the secondary risk accidents of environment protection emissions.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation that the embodiment of the present invention one provides
Structure diagram.
Fig. 2 is the structure diagram that fluid flow state adjusts area in the present invention.
Fig. 3 is the structure diagram of eddy flow wash mill in the present invention.
Fig. 4 is the structure diagram of leatherleaf separator in invention.
Fig. 5 is the structure diagram of descending liquid device in the present invention.
Reference numeral：
1- desulfurization tower shells；2- fluid flow states adjust area；3- eddy flow wash mills；
4- leatherleaf separators；5- gas operated devices；6- descending liquid devices；
7- air seals；8- supports connector；9- reducings are bored；
10- chimney entrances；31- swirl flow nozzles；32- connecting sleeves；
33- sluicing pipes；34- eddy flow fasteners；41- leatherleaf modules；
42- frames；43- stiffener plates；44- leatherleaf fasteners；
61- descending liquid fasteners；62- vertical ducts；63- transverse pipes；
Alpha- spray angles；Beta- transverse pipes inclination angle；D- desulfurizing tower internal diameters；
D1- chimney inlet diameters；H1- fluid flow states adjust area's height；L1- spray heights；
R1- sprays radius.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention provides a kind of smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation, which includes
Following steps：By flue gas by cylindrical structure to carry out fluid flow state adjustment process, flue gas adjusts process in fluid flow state
Interior abundant development, the large scale drop liquid foam and particulate matter carried in flue gas complete sedimentation point according to Stokes separation theorem
From；
To flue gas spray washing liquid, the microscopic grains particulate matter in flue gas be washed liquid fully soak and coalesce to be formed it is larger
Size heavy phase carries particulate matter, a part of particle object sedimentation separation；
Flue gas enters leatherleaf separator, and the heavy phase in flue gas carries matter fine droplet liquid foam and particulate matter coalescence increase,
Separation is forced from flue gas.
The present invention provides a kind of smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation, and flue gas Primordial Qi is first
The cylindrical space of fluid flow state adjustment process is introduced into, flue gas axially slows down, and flue gas fluidised form fully develops, each fluid in cross section
The diminution of infinitesimal Momentum And Kinetic Energy difference obtains homogenization distribution, and the heavy phase of large-size carries matter in accordance with Stokes' law from light phase
Preliminary sedimentation separation is able in flue gas.The heavy phase that coming out still remaining from fluid flow state adjustment process has reduced size carries the cigarette of matter
Gas, to the flue gas spray washing agent, a large amount of liquid foams generated through its injection carry matter to reduced size heavy phase remaining in flue gas
Progress fully washing wetting, the heavy phase after wetting carry matter and then assemble to form size bigger, the heavy phase of proportion bigger carrying matter
Grain, a part of particle object in accordance with Stokes' law continue the sedimentation separation from flue gas stream, and rest part then with flue gas into
Enter leatherleaf separator.The remaining heavy phase that flue gas carries wetting carries matter fine droplet liquid foam and particulate matter, enters according to stream
Body dynamics isolation technics is precisely required in the leatherleaf internals aerodynamics runner of the special construction of setting, is forced to carry out efficient
Kinetic energy momentum converts, fluid along small radius of turn high speed rotation, the heavy phase of wetting carry between matter particle mutually efficiently collision and
Coalescence increase, increased heavy phase carry matter and make in the vector separation field including radial centrifugal force field, non-radial super gravity field
It is detached, and collect the liquid film to be formed and constantly thickened in leatherleaf internals group wall surface from flue gas with lower pressure, and it is residual in flue gas stream
The more minute liquid foam liquid mist and dust particle stayed once strike liquid film surface, i.e., are converted to huge surface from fluid dynamic energy
The liquid film of free energy is trapped and is further collected into liquid film, and the liquid film that these continuous renewals thicken falls in gravity leading role
It is discharged to leatherleaf separator bottom.
The technique of the present invention, in the prior art compared with by the way of filler, curved surface cone, baffle plate etc. are traditional, this hair
It is bright to be obviously improved particle-resistant object plugging performance, so as to reduce technique and device operation pressure drop.And the present invention is using multistage point
From raising separating effect and separative efficiency effectively reduce and avoid Separation process arrangements flue gas emission " float rain " " descending salt " occur
Wait the secondary risk accidents of environment protection emissions.Also, technique and device operating flexibility space are obviously improved, especially unusual service condition is fitted
It should be able to power.
On the basis of above-described embodiment, further, after being directed through the separation of leatherleaf separator using gas operated device
Flue gas enter in chimney.
In the present embodiment, the gas after being separated by filtration is led into chimney using gas operated device, improves efficiency.Air guide
Device is tubular construction, can be cylinder or polygon cylinder or other shapes of.
On the basis of above-described embodiment, further, the liquid and particulate matter isolated from leatherleaf separator are received
Collection discharge, and be isolated with flue gas.
In the present embodiment, detach liquid and the contactless no back-mixing of purified flue gas after isolation and be directly displaced into desulfurization
Nearby preferable sedimentation separation, while the effectively cigarette of entry deterrence fluid flow state adjusting apparatus are realized in flue gas low flow velocity region to inner wall of tower
Gas Primordial Qi is directly entered after gas operated device and is caused point to smoke stack emission by descending liquid device " short circuit " the leatherleaf separator that detours
It is reduced from efficiency.
On the basis of above-described embodiment, further, the gas after being detached out of leatherleaf separator is passed through from top
It crosses gas operated device and enters chimney, the liquid isolated collects discharge from below.
Concrete meaning in invention.
Fig. 1 is the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation that the embodiment of the present invention one provides
Structure diagram；Fig. 2 is the structure diagram that fluid flow state adjusts area in the present invention；Fig. 3 is eddy flow washing dress in the present invention
The structure diagram put；Fig. 4 is the structure diagram of leatherleaf separator in the present invention；Fig. 5 is descending liquid device in the present invention
Structure diagram；As shown in Figures 1 to 5, the embodiment of the present invention provides a kind of smoke-gas wet desulfurization of anti-clogging long-term operation
Gas-liquid solid separation system, the system include desulfurization tower shell 1, eddy flow wash mill 3 and leatherleaf separator 4；Desulfurization tower shell 1
Bottom it is cylindrical, and formed fluid flow state adjustment area 2；Flue gas fully develops in fluid flow state adjustment area 2, is taken in flue gas
The large scale drop liquid foam and particulate matter of band complete sedimentation separation according to Stokes separation theorem；Eddy flow wash mill 3 is fixed
On the side wall of desulfurization tower shell 1, and positioned at the top in fluid flow state adjustment area 2, for flue gas spray washing agent, by cigarette
Gas washing soaks；Leatherleaf separator 4 is fixed on the inside of desulfurization tower shell 1, small for the heavy phase in flue gas to be carried matter
Drop liquid foam and particulate matter coalescence increase, and separation is forced from flue gas.
The embodiment of the present invention provides a kind of smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation, this is
System includes desulfurization tower shell 1, eddy flow wash mill 3 and leatherleaf separator 4；Flue gas Primordial Qi is initially entered in desulfurization tower shell 1
Fluid flow state adjustment area 2, the fluid flow state adjustment area 2 shown in maximum cross section cylindrical space, flue gas axially slow down, cigarette
Air-flow state fully develops, and each fluid infinitesimal Momentum And Kinetic Energy difference diminution in cross section obtains homogenization distribution, the heavy phase of large-size
It carries matter and is able to preliminary sedimentation separation from light phase flue gas in accordance with Stokes' law.It is come out from fluid flow state adjustment area 2 still residual
The heavy phase for having reduced size carries the flue gas of matter, immediately into 3 zone of action of eddy flow scrubbing section namely eddy flow wash mill,
Matter is carried to reduced size heavy phase remaining in flue gas through a large amount of liquid foams that its injection generates and carries out fully washing wetting, after wetting
Heavy phase carry matter then assemble to be formed size bigger, the heavy phase of proportion bigger carry matter particle, a part of particle object in accordance with this hold in the palm
Gram this law continues the sedimentation separation from flue gas stream, and rest part is then as flue gas enters leatherleaf separator 4.Flue gas carries
The remaining heavy phase of wetting carries matter fine droplet liquid foam and particulate matter, enters and is precisely required according to fluid dynamics isolation technics
In the leatherleaf internals aerodynamics runner of the special construction of setting, it is forced to carry out efficient kinetic energy momentum transformation, fluid is along small
Radius of turn high speed rotation, the heavy phase of wetting carry between matter particle mutually efficiently collision and coalesce increase, increased heavy phase carries
Matter forces to detach from flue gas under the vector separation field action including radial centrifugal force field, non-radial super gravity field, and
Collect the liquid film to be formed and constantly thickened in leatherleaf internals group wall surface, and remaining more minute liquid foam liquid mist and dust in flue gas stream
Particulate matter once strikes liquid film surface, i.e., be converted to from fluid dynamic energy huge surface free energy liquid film trapping and it is further
Collect into liquid film, the liquid film that these continuous renewals thicken falls on the discharge of 4 bottom of leatherleaf separator under gravity leading role.
The present invention coordinates eddy flow wash mill 3 and fluid flow state adjustment area 2 to divide flue gas using leatherleaf separator 4
From with compared with by the way of filler, curved surface cone, baffle plate etc. are traditional, the present invention is obviously improved particle-resistant object in the prior art
Plugging performance, so as to reduce technique and device operation pressure drop.And the present invention realizes multi-stage separation, improves separating effect and separation
Efficiency effectively reduces and avoids Separation process arrangements flue gas emission the secondary risk things of environment protection emissions such as " float rain " " descending salt " occur
Therefore.
On the basis of above-described embodiment, further, gas operated device 5 is further included；Gas operated device 5 is arranged on leatherleaf separation
The top of device 4, the lower end of gas operated device 5 are connected with the top of leatherleaf separator 4, and lower end is used to connect with chimney entrance 10
It is logical；Gas of the gas operated device 5 for after guiding separation enters in chimney.
The gas after being separated by filtration is led into chimney the present embodiment provides gas operated device 5, improves efficiency.Air guide fills
5 are put as tubular construction, can be cylinder or polygon cylinder or other shapes of.
On the basis of above-described embodiment, further, descending liquid device 6 is further included；Descending liquid device 6 include descending liquid pipeline and
Air seal 7；The upper end of descending liquid pipeline is connected with the lower end of leatherleaf separator 4, and air seal 7 is arranged on the lower end of descending liquid pipeline.
The liquid film thickened is constantly updated in the present embodiment, in leatherleaf separator 4 and is fallen under gravity leading role and is passed through
It is discharged in descending liquid pipeline.Descending liquid pipeline can separate liquid and flue gas, by independent descending liquid device 6, with purified flue gas
Contactless no back-mixing and be directly displaced near desulfurization inner wall of tower flue gas low flow velocity region and realize preferable sedimentation separation, while effectively
The flue gas Primordial Qi of entry deterrence fluid flow state adjusting apparatus by descending liquid device 6 " short circuit " detour leatherleaf separator 4 directly into
Enter causes separative efficiency to reduce after gas operated device 5 to smoke stack emission.
On the basis of above-described embodiment, further, descending liquid pipeline includes vertical duct 62 and transverse pipe 63；Vertical duct 62
Upper end connected with the lower end of leatherleaf separator 4, the lower end of vertical duct 62 is connected with transverse pipe 63；Air seal 7 is arranged on horizontal stroke
To one end of pipe 63.
Wherein, vertical duct 62 can be one or more；When vertical duct 62 is multiple, multiple intervals of vertical duct 62 are set
It puts.
Further, as one of embodiment, transverse pipe 63 and horizontal line are at an acute angle, in the present embodiment, vertical duct
62 connect leatherleaf separator 4 with transverse pipe 63, and transverse pipe 63 and horizontal line are at an acute angle, convenient for that will fall into transverse pipe 63
Liquid and solid particle flow downward discharge, and transverse pipe 63 is avoided to block.Flue gas outside transverse pipe 63 can be prevented using air seal 7
Enter from the lower end of transverse pipe 63, improve separating effect.
Further, vertical duct 62 is fixed by descending liquid fastener 61.
On the basis of above-described embodiment, further, on the basis of above-described embodiment, further, eddy flow washing
Device 3 includes fixing piece and swirl flow nozzle 31；One end of fixing piece is fixed on the outer wall of desulfurization tower shell 1, and the other end is located at
The inside of desulfurization tower shell 1, and fix swirl flow nozzle 31 at the end.Fixing piece includes connecting sleeve 32, sluicing pipe 33 and eddy flow
Fastener 34；Connecting sleeve 32 is fixed on the outer wall of desulfurization tower shell 1；Sluicing pipe 33 is located in connecting sleeve 32, and eddy flow is tight
Firmware 34 fixes connecting sleeve 32 and sluicing pipe 33；One end of sluicing pipe 33 is located in desulfurization tower shell 1, and sluicing pipe 33
The end fix swirl flow nozzle 31.Wherein, eddy flow wash mill 3 can be one or more；When eddy flow wash mill 3 is multiple
When, multiple eddy flow wash mills 3 are arranged at intervals successively along the circumferential direction of desulfurization tower shell 1.
In the present embodiment, using swirl flow nozzle 31 to flue gas spray washing liquid, spray range can be expanded, using connecting sleeve
32 and the mode of sluicing pipe 33 fix swirl flow nozzle 31, it is simple in structure, be easily installed dismounting.Eddy flow wash mill 3 is set as more
It is a to improve separative efficiency.
On the basis of above-described embodiment, further, the top of desulfurization tower shell 1 is in truncated cone-shaped, and lower part is cylinder；
Fluid flow state adjustment area 2 is formed at the lower part of desulfurization tower shell 1；Eddy flow wash mill 3 and leatherleaf separator 4 are respectively positioned on desulfurizing tower
The top of housing 1.
In the present embodiment, the top of desulfurization tower shell 1 is truncated cone-shaped, can reduce desulfurization tower shell 1 so as to form reducing cone 9
Volume, since upper diameter becomes smaller, while also reduce the thickness on 1 top of desulfurization tower shell, on cost have property
Valency advantage.
On the basis of above-described embodiment, further, leatherleaf separator 4 includes frame 42 and leatherleaf module 41；Plumage
Leaf module 41 is removably secured with frame 42 and connect.
In the present embodiment, separation module is removably secured with frame 42 to be connect, it can be achieved that online in the case of not dismantling
Offline thorough cleaning when rough cleaning and parking dismounting, it is easy to use.
Further, leatherleaf separator 4 includes leatherleaf fastener 44 and stiffener plate 43.
Embodiment one：
Specifically, the parameters such as the material of desulfurization tower shell 1, desulfurizing tower internal diameter D are determined by process upstream interface.
Specifically, fluid flow state adjustment area is the cylindrical space being arranged on inside desulfurization tower shell 1.The fluid flow state tune
Main plot height H1 is not less than the internal diameter D of 0.1 times of desulfurization tower shell 11.
Preferably, air seal 7 be located at fluid flow state adjustment area 2 upper end, that is, fluid flow state adjustment area 2 be arranged on it is de-
The inside of sulphur tower shell 1 by between upstream device setting battery limit (BL) line (hemline of desulfurization tower shell 1) and 7 bottom line of air seal and by
The cylindrical space that desulfurization tower shell 1 surrounds, specifically, eddy flow wash mill 3 be located at fluid flow state adjustment area 2 top, and with
Fluid flow state adjustment overlaps between area 2 without interval namely the two.
Specifically, the material of eddy flow wash mill 3 is determined according to the working condition requirement that process upstream gives.
Specifically, 3 height H1 of eddy flow wash mill and 31 parameter of swirl flow nozzle, by leatherleaf separation accurate calculation design and
Configuration platform determines.
Specifically, by the way that connector 8 is supported to be connect with desulfurization tower shell 1, connection mode connects leatherleaf separator 4 to be fixed
It connects or is detachably connected.
Specifically, leatherleaf separator 4 includes at least one set of leatherleaf module 41, leatherleaf separator frame 42, reinforcing rib
Plate 43 and leatherleaf fastener 44.
Leatherleaf separator 4 is fixedly connected with support connector 8, can only be cleaned roughly online.
Specifically, the configurations of leatherleaf separator 4 and size are by the design of dynamics gas-liquid separation accurate calculation and group
State platform determines.
Specifically, the configurations of gas operated device, downspout and air seal and size are precisely counted by dynamics gas-liquid separation
It calculates design and configuration platform determines.
In the present embodiment, processing flue-gas temperature is 64.5 DEG C, flue gas gauge pressure 3kPaG, flue gas flow 191000Nm3/h。
In the present embodiment, 1 material of desulfurization tower shell be Q345R+S31603, inner diameter of tower D be 5100mm, chimney entrance
Diameter D1 is 2300mm.It greatly promotes process unit and internals to change operating mode, flue gas high/low temperature is handed over especially under accident conditions
Becoming pulse causes process unit and internals failure even to damage.
In the present embodiment, fluid flow state adjustment 2 place cylindrical space height H1 of area is 735mm, and cylinder diameter is
5100mm, ratio of height to diameter 0.1441.
In the present embodiment, eddy flow wash mill 3, material S31603, spray height L1 are 750mm, spray radius R1
For 1300mm, spray angles alpha is 120 °；Nozzle is eddy flow washing wetting nozzle.
In the present embodiment, leatherleaf separator 4, material S31603 include 16 groups of standalone modules.Leatherleaf module, is adopted
With dismantled and assembled linked vector graph.
In the present embodiment, gas operated device 5, diameter D1 are 2280mm, material S31603.
In the present embodiment, descending liquid device 6, by 62,4 16 sets of downspout flange fasteners 61, vertical duct transverse pipes 63
And 4 sets of air seals 7 form, material S31603.
In the present embodiment, transverse pipe inclination angle beta is 8.5 °.
The smoke-gas wet desulfurization gas-liquid solid separation system for the anti-clogging long-term operation that the present embodiment two provides is to implementing
The smoke-gas wet desulfurization gas-liquid solid separation system for the anti-clogging long-term operation that example one provides is further improved, in embodiment one
And on the basis of Fig. 1-Fig. 5, the smoke-gas wet desulfurization gas-liquid-solid separation for the anti-clogging long-term operation that the present embodiment two provides
System, processing flue-gas temperature are 56 DEG C, flue gas gauge pressure 5kPaG, flue gas flow 168298Nm3/h.
In the present embodiment, 1 material of desulfurization tower shell be Q345R+S31603, inner diameter of tower D be 4400mm, chimney entrance
Diameter D1 is 2400mm.
In the present embodiment, 2 place cylindrical space height H1 of fluid flow state adjustment section is 650mm, and cylinder diameter is
4400mm, ratio of height to diameter 0.1477.
In the present embodiment, eddy flow wash mill 3, spray height L1 are 873mm.
In the present embodiment, gas operated device 5, a diameter of 2370mm.
In the present embodiment, 63 inclination angle beta of transverse pipe is 5 °.
Embodiment three：
The smoke-gas wet desulfurization gas-liquid solid separation system for the anti-clogging long-term operation that the present embodiment three provides is to implementing
The smoke-gas wet desulfurization gas-liquid solid separation system for the anti-clogging long-term operation that example one provides is further improved, in embodiment one
And on the basis of Fig. 1-Fig. 5, the smoke-gas wet desulfurization gas-liquid-solid separation for the anti-clogging long-term operation that the present embodiment three provides
System, processing flue-gas temperature are 60 DEG C, flue gas gauge pressure 0kPaG, flue gas flow 440000Nm3/h。
In the present embodiment, desulfurizing tower internal diameter D is 8500mm, and chimney inlet diameter D1 is 3800mm.
In the present embodiment, 2 place fluid flow state adjustment area height H1 of fluid flow state adjustment area is 1150mm, and cylinder is straight
Diameter is 8500mm, ratio of height to diameter 0.1353.
In the present embodiment, eddy flow wash mill 3, spray height L1 are 1300mm.
In the present embodiment, gas operated device 5, a diameter of 3750mm.
In the present embodiment, 63 inclination angle beta of transverse pipe is 3 °.
To sum up, the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation provided by the invention has such as
Lower advantage：
The present invention can effectively prevent leads to flue gas desulfurization washing foam removal dedusting separation due to flue gas Primordial Qi upstream fluctuation of operating conditions
Process unit and internals failure operation are even blocked and are damaged, lifting process device long period operating flexibility, promote separative efficiency,
Operation droop loss is reduced, reduces the exceeded secondary risk accidents of environment protection emission brought of flue gas emission.
It is in particular in：
1) technique and device operating flexibility space are obviously improved, especially to unusual service condition adaptability.
2) particle-resistant object plugging performance is obviously improved, so as to reduce technique and device operation pressure drop.
3) it greatly promotes process unit and internals to change operating mode, flue gas high/low temperature alternating impulse especially under accident conditions
Failure is caused even to damage to process unit and internals.
4) technique and device separation operational efficiency are improved, effectively reduces and avoid Separation process arrangements flue gas emission to occur
The secondary risk accidents of environment protection emissions such as " float rain " " descending salt ".
Comparative example A：
It is initially that certain petroleum chemical enterprise urges device flue gas sodium alkali desulphurization gas-liquid-solid again that this comparative example, which is U.S.'s environmental protection company,
The technique packet technology provided is provided.
In this comparative example, processing flue-gas temperature, flue gas gauge pressure and flue gas flow are same as Example 1.
In this comparative example, piece-rate system is using external model EF-25A filler piece-rate systems.
In this comparative example, EF-25A filler piece-rate systems are not provided with descending liquid system.
In this comparative example, it is not provided with gas directing system.
Comparative example B
It is initially that certain petroleum chemical enterprise urges device flue gas sodium alkali desulphurization gas-liquid-solid point again that this comparative example, which is certain domestic university,
The technique provided from process.
In this comparative example, processing flue-gas temperature, flue gas gauge pressure and flue gas flow are same as Example 3.
In this comparative example, Separate System of Water-jet is using traditional baffling tabula rasa demister.
In this comparative example, it is not provided with descending liquid system.
In this comparative example, it is not provided with gas directing system.
The other the same as in Example 3.
Comparative example C
This comparative example is that certain domestic company urges device flue gas sodium alkali desulphurization gas-liquid-solid to detach again for certain petroleum chemical enterprise
The technique that journey provides.
In this comparative example, flue-gas temperature is 76.5 DEG C, flue gas gauge pressure 3kPaG, flue gas flow 170000Nm3/h。
In this comparative example, washing system is filter core module.
In this comparative example, piece-rate system bores droplet separator using hyperbolic.
In this comparative example, without gas directing system.
In this comparative example, it is not provided with descending liquid system.
The implementation result of the present invention：
About the dust that separation removal carries from flue gas stream and the heavy phase dissolved with sulfate carries matter technology
Comprehensive performance is good and bad, can be from technology and application apparatus to flue gas high/low temperature alternating temperature-changing impact tolerance range, continuous
Heavy phase carries matter residual quantity, discharge in operation pressure drop (i.e. anti-dust and salting-out crystallization plugging performance) in 8000 hours, discharge flue gas
It is next to carry matter size, discharge flue gas " the float rain " parameters such as " salt reduction " phenomenon and operating flexibility and information for remaining heavy phase in flue gas
Comprehensive Evaluation.
It urges again in device smoke-gas wet desulfurization washing foam removal dust collecting process performance indicator, is resistant to flue gas high/low temperature alternating temperature-changing
Impact range is wider, shows technique and its application apparatus in upstream " running agent " operating mode, the stoppage in transit etc. suddenly of loop slurry system once in a while
The resistance even damaged that avoids breaking down under the non-operating mode occurred is stronger, can substantially reduce because process unit failure is stopped
Fortune loss and checking maintenance expense.
It urges again in device smoke-gas wet desulfurization washing foam removal dust collecting process performance indicator, long period continuous operation pressure drop is got over
It is low, show that the anti-dust of technique and salting-out crystallization blocking ability are stronger；Heavy phase in flue gas is discharged to carry in matter residual quantity, discharge flue gas
The heavy phase of remaining carries matter size, discharge flue gas " the float rain " parameters such as " salt reduction " phenomenon and operating flexibility and information and is commented to integrate
Sentence, then show to urge device smoke-gas wet desulfurization washing gas-liquid-solid separation configuration technique more excellent again, be more suitable for urging device cigarette again
Gas-liquid solid separation process is washed in gas wet desulphurization.
By taking certain petro-chemical corporation urges device flue gas sodium alkali desulphurization scrubbing tower tail gas Control of Hidden transformation project again as an example, in order to
Satisfaction urges the smooth operation of device flue gas sodium alkali desulphurization scrubbing tower long period, smoke stack emission flue gas not to continue to occur again
Accidents such as " float rain " " salt reductions " and frequently complained by the periphery masses, and discharge flue gas is made to reach the requirement of local environmental protection administration, should
Company continuously attempts to be transformed using different separating technology technologies in recent years.The enterprise is used at the beginning of plant construction from urging again
Company of the U.S. provide urge again the desulfurization of device fume treatment sodium alkali wash gas-liquid separation technique, because operation pressure drop rise violently,
Device blocks, smoke stack emission gas " float rain " and " salt reduction " and original technique is changed to certain university of the country is the transformation work that provides
Skill, but the reforming technology of university offer and device operation pressure drop, smoke stack emission gas " float rain " and " salt reduction " still cannot reach
Local environmental protection administration's discharge fume indication requirement finally urges device again using the present invention using leatherleaf separation core technology configuration
The smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation, which just obtains, is satisfied with operational effect.
Each example urges the smoke-gas wet desulfurization gas-liquid-solid separating technology test evaluation pair of device anti-clogging long-term operation again
1 is listed in the table below than situation：
Table 1：Each example is urged the smoke-gas wet desulfurization gas-liquid-solid separating technology of device anti-clogging long-term operation to test and is commented again
Valency contrast table
The smoke-gas wet desulfurization gas-liquid-solid separating technology for urging device anti-clogging long-term operation again from 1 each example of upper table is tested
Evaluation contrast table can be seen that：
1) from technique and application apparatus to flue gas alternating hot and cold temperature tolerance can, embodiment 1,2,3 and 4 and right
Ratio A and B, be respectively provided with it is excellent to flue gas alternating hot and cold temperature tolerance energy, except only comparative example C.To find out its cause, it is
Only have in examples detailed above in comparative example C techniques and application apparatus using the ceramic and plastics material for not being resistant to alternating hot and cold temperature
Matter, and remaining embodiment 1-4 and comparative example A and B are using the Stainless steel 316 with tolerance alternating hot and cold temperature excellent properties
Material.
2) 1,2,3 and 4 present invention of embodiment urges device anti-clogging long period again using leatherleaf separation core technology configuration
The smoke-gas wet desulfurization gas-liquid-solid separating technology of operation, they ran pressure drop, discharge flue gas raffinate amount, discharge cigarette at 8000 hours
In gas Liquid Residue foam full-size, discharge flue gas " float rain " indexs such as " salt reduction " and operating flexibility space, it is significantly better than the U.S.
Certain company process ration example A, the country certain colleges and universities process ration example B and the country certain company process ration example C.To find out its cause, it is
The smoke-gas wet desulfurization gas-liquid-solid for urging device anti-clogging long-term operation again that the present invention is configured using leatherleaf separation core technology
The complete science of separating technology configuration, and participate in configuration technological parameter group by accurate dynamics isolation technics calculate design and
The accurate interpretative version of configuration system platform obtains；And comparative example A-C something in commons lack fluid flow state adjustment system, air guide system
System, descending liquid system and descending liquid gas sealing system, technique configuration element is imperfect, and collaboration can not be formed between technique configuration element and is made
With.Owner provides more supplemental informations：Comparative example A shows as blocking and leads to technique in the major drawbacks that device scene is run
" obstruction " operation is not smooth, and the major drawbacks performance that comparative example C is run at device scene is low separation efficiency and causes to discharge cigarette
Gas carrying liquid is serious, and comparative example B is showed the drawbacks of device scene is run and is between comparative example A and C.
3) 1,2,3 and 4 present invention of embodiment urges device anti-clogging long period again using leatherleaf separation core technology configuration
The smoke-gas wet desulfurization gas-liquid-solid separating technology of operation, the higher embodiment of operation pressure drop, corresponding discharge flue gas raffinate amount
Low tendency is presented away with discharge flue gas Liquid Residue foam full-size.The reason is that the present invention detaches core using leatherleaf
Technical configuration urges the smoke-gas wet desulfurization gas-liquid-solid separating technology of device anti-clogging long-term operation to establish precisely moving again
Mechanics separation is calculated on the accurate separation scheme basis that design and configuration platform system obtain, and this kind of separating technology technology is only
It is converted by fluid from kinetic energy momentum and completes weight phase separation without consuming external energy, the pressure drop the big, shows to use
In realization separation, the energy of conversion consumption is more, completes the efficiency of separation more preferably.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. the smoke-gas wet desulfurization gas-liquid-solid separating technology of a kind of anti-clogging long-term operation, which is characterized in that including following step
Suddenly：
By flue gas by cylindrical structure to carry out fluid flow state adjustment process, flue gas is abundant during fluid flow state adjustment
Develop, the large scale drop liquid foam and particulate matter carried in flue gas completes sedimentation separation according to Stokes separation theorem；
To flue gas spray washing liquid, the microscopic grains particulate matter in flue gas is washed liquid and fully soaks and coalesce to form large-size
Heavy phase carries particulate matter, a part of particle object sedimentation separation；
Flue gas enters leatherleaf separator, and the heavy phase in flue gas carries matter fine droplet liquid foam and particulate matter coalescence increase, from cigarette
Separation is forced in gas.
2. the smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation according to claim 1, feature
It is, the flue gas being directed through after the separation of leatherleaf separator using gas operated device is entered in chimney.
3. the smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation according to claim 2, feature
It is, the liquid and particulate collection isolated from leatherleaf separator is discharged, and is isolated with flue gas.
4. the smoke-gas wet desulfurization gas-liquid-solid separating technology of anti-clogging long-term operation according to claim 3, feature
Be, by out of leatherleaf separator detach after gas enter chimney by gas operated device from top, the liquid isolated from
Collect discharge in lower section.
5. a kind of smoke-gas wet desulfurization gas-liquid-solid using claim 1-4 any one of them anti-clogging long-term operations detaches
The smoke-gas wet desulfurization gas-liquid solid separation system of the anti-clogging long-term operation of technique, which is characterized in that including desulfurization tower shell,
Eddy flow wash mill and leatherleaf separator；
The bottom of the desulfurization tower shell is cylindrical, and forms fluid flow state adjustment area；Flue gas is in fluid flow state adjustment area
Fully develop, the large scale drop liquid foam and particulate matter carried in flue gas completes sedimentation separation according to Stokes separation theorem；
The eddy flow wash mill is fixed on the side wall of the desulfurization tower shell, and the top in area is adjusted positioned at fluid flow state,
For to flue gas spray washing agent, flue gas washing to be soaked；
The leatherleaf separator is fixed on the inside of the desulfurization tower shell, for the heavy phase in flue gas to be carried the small liquid of matter
Dropping liquid foam and particulate matter coalescence increase, force separation from flue gas.
6. the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation according to claim 5, feature
It is, further includes gas operated device；
The gas operated device is arranged on the top of the leatherleaf separator, and the lower end of the gas operated device is detached with the leatherleaf
The top connection of device, lower end are used to connect with chimney entrance；Gas of the gas operated device for after guiding separation enters cigarette
In chimney.
7. the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation according to claim 6, feature
It is, further includes descending liquid device；
The descending liquid device includes the gentle envelope device of descending liquid pipeline；Under the upper end of the descending liquid pipeline and the leatherleaf separator
End connection, the air seal are arranged on the lower end of the descending liquid pipeline.
8. the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation according to claim 7, feature
It is, the descending liquid pipeline includes vertical duct and transverse pipe；
The upper end of the vertical duct is connected with the lower end of the leatherleaf separator, the lower end of the vertical duct and the transverse pipe
Connection；The air seal is arranged on one end of the transverse pipe.
9. the smoke-gas wet desulfurization gas-liquid solid separation system of anti-clogging long-term operation according to claim 5, feature
It is, the eddy flow wash mill includes fixing piece and swirl flow nozzle；
One end of the fixing piece is fixed on the outer wall of the desulfurization tower shell, and the other end is located at the interior of the desulfurization tower shell
Portion, and fix the swirl flow nozzle at the end.
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