CN208757290U - The supply equipment of demister in desulphurization system, desulphurization system - Google Patents

The supply equipment of demister in desulphurization system, desulphurization system Download PDF

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Publication number
CN208757290U
CN208757290U CN201821487437.2U CN201821487437U CN208757290U CN 208757290 U CN208757290 U CN 208757290U CN 201821487437 U CN201821487437 U CN 201821487437U CN 208757290 U CN208757290 U CN 208757290U
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waste water
demister
water
wastewater
reuse
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韦飞
惠润堂
杨爱勇
舒喜
周香
王敏
王梦勤
冯建春
王春玲
陆斌
李瑾
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Guodian Environmental Protection Research Institute Co Ltd
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Guodian Environmental Protection Research Institute Co Ltd
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Abstract

The utility model discloses a kind of supply equipments of demister in desulphurization system, desulphurization system, wherein the supply equipment of demister includes: waste water collection device in desulphurization system, which can collect the waste water generated during gypsum dehydration;It is connected to waste water collection device and for handling waste water to reach the wastewater treatment equipment of the rinse water standard of demister;For waste water of storing that treated and for the reclamation set to demister supply flushing water.The supply equipment of demister in above-mentioned desulphurization system, realize the useless water reuse of gypsum dehydration generation, reduce the raised speed of liquid level in desulfuration absorbing tower, the stability for influencing desulfuration absorbing tower operation because of return of waste water to desulfuration absorbing tower is avoided, the stability of desulfuration absorbing tower operation is improved;Amount of extra water needed for rinsing demister is decreased, water conservation is realized.

Description

The supply equipment of demister in desulphurization system, desulphurization system
Technical field
The utility model relates to flue gas desulfurization technique fields, more specifically in a kind of desulphurization system, desulphurization system The supply equipment of demister.
Background technique
Currently, flue gas desulphurization system mainly uses Limestone-gypsum Wet Flue Gas Desulfurization Process technique, Limestone-gypsum Wet Flue Gas Desulfurization Process Technique be after being dissolved using lime stone it is manufactured alkalinity gypsum solution as absorbent to the pollutant SO contained in flue gas2It is inhaled Receipts processing, by-produced gypsum can be used as commodity and bring economic benefit.
By-produced gypsum is oil-containing gypsum crystal, CaCl2, a small amount of unreacted lime stone, CaF2It is other with a small amount of flying dust etc. The mixture of compound is delivered to gypsum hydrocyclone by discharge pump and gypsum crystal is classified, gypsum hydrocyclone The solid of underflow oil-containing 50% flow to gypsum slurries baffle-box, distribution to gypsum dehydration system by gravity.
In gypsum dehydration system, it is low to generate moisture content after centrifugal dehydrator or plate and frame filter press dehydration for gypsum slurries In 10% gypsum and the waste water of solid content >=1%.The waste water suspension is high, is sent after usually converging to desulfurization and is absorbed again Tower.But return of waste water is to desulfuration absorbing tower, and it is larger compared with the liquid level rate of climb easily led in desulfuration absorbing tower, influence desulfurization The stability of absorption tower operation.
In addition, it is 10~60 μm of water mist that desulfuration absorbing tower, which in the process of running, is also easy to produce partial size, water mist dissolved with sulfuric acid, Sulfate, sulfur dioxide etc. can pollute and corrode blower, heat exchanger and flue.Therefore, absorption is set on wet desulfurizing process The standby requirement for proposing demisting, demister of the cleaned gas through desulfuration absorbing tower top before leaving desulfuration absorbing tower remove Mist.Because containing CaSO in water mist4、CaSO3And containing substances such as silicon, iron, aluminium in flying dust, these substances have biggish viscosity, compared with Demister fouling is easily caused, periodic flushing demister is needed, institute's water requirement is larger.
In conclusion how waste water is handled, to avoid desulfuration absorbing tower fortune is influenced because of return of waste water to desulfuration absorbing tower Capable stability, is a problem to be solved by those skilled in the art.
Utility model content
The purpose of the utility model is to provide a kind of supply equipments of demister in desulphurization system, to avoid because of return of waste water To desulfuration absorbing tower and influence desulfuration absorbing tower operation stability.The another object of the utility model is to provide a kind of desulfurization system System.
To achieve the goals above, the utility model provides the following technical solutions:
The supply equipment of demister in a kind of desulphurization system, comprising:
Waste water collection device, the waste water collection device can collect the waste water generated during gypsum dehydration;
It is connected to the waste water collection device and handles the waste water to reach the waste water of the rinse water standard of demister Processing unit;
For the waste water of storing that treated and for the reclamation set to demister supply flushing water.
Preferably, the waste water collection device includes: wastewater collection pond, for covering the collecting pit of the wastewater collection pond Cover board;Wherein, the wastewater collection pond is equipped with the agitating device for stirring the waste water.
Preferably, the wastewater treatment equipment includes:
For adjusting the pH value of the waste water and the wastewater equalization pond of hardness;
For covering the conditioning tank cover board of the wastewater equalization pond;
For removing the waste water treater of the suspended matter in the waste water;
Wherein, the waste water collection device, the wastewater equalization pond and the waste water treater are sequentially communicated.
Preferably, the wastewater equalization pond is equipped with pH regulating device and water demineralization device, wherein the pH regulating device Medicament be lime, the medicament of the water demineralization device is Na2CO3
Preferably, the waste water treater includes filter and thickener, wherein the filtering outlet of the filter and institute State reclamation set connection, the filter concentrated water outlet is connected to the thickener, the supernatant outlet of the thickener and The mud discharging mouth of the inlet communication of the filter, the concentrated water slot is connected to by filter press with the wastewater collection pond.
Preferably, the filter is tube microfiltration membrane, and the filter press is the filter press that desulfurization wastewater handles workshop.
Preferably, in above-mentioned desulphurization system demister supply equipment further include:
For the waste water in the waste water collection device to be delivered to the first delivery pump of the wastewater equalization pond;For inciting somebody to action Waste water in the wastewater equalization pond is delivered to the second delivery pump of the waste water treater;
Wherein, the exit of second delivery pump is provided with pH meter, nephelometer and alkalimeter.
Preferably, the reclamation set includes: reuse water tank, for being connected to time of the reuse water tank and the demister With pipeline, the reuse water pump being serially connected on the reuse pipeline;
Wherein, the reuse water tank is equipped with liquidometer, pH meter, nephelometer and alkalimeter;The reuse pipeline, the demisting The flushing of the moisturizing pipeline of device and the demister carrys out waterpipe and is connected to by triple valve.
The supply equipment of demister in desulphurization system provided by the utility model, passes through waste water collection device, wastewater treatment Device and reclamation set realize collection and handle the waste water of gypsum dehydration generation, and by treated, waste water leads to demister, To realize the useless water reuse of gypsum dehydration generation, the raised speed of liquid level in desulfuration absorbing tower is reduced, is avoided The stability that desulfuration absorbing tower operation is influenced because of return of waste water to desulfuration absorbing tower improves the stabilization of desulfuration absorbing tower operation Property.
Meanwhile in desulphurization system provided by the utility model demister supply equipment, using reclamation set will handle after Waste water lead to demister, to rinse demister, reduce rinse demister needed for amount of extra water, realize water conservation.
The supply equipment of demister in desulphurization system based on above-mentioned offer, the utility model additionally provide a kind of desulfurization system System, which includes: gypsum dehydration equipment, demister in demister and desulphurization system described in any of the above embodiments Supply equipment, the waste water collection device are connected to the wastewater outlet of the gypsum dehydration equipment, and the reclamation set can be to The demister supplies flushing water.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the block diagram of the supply equipment of demister in desulphurization system provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
The supply equipment of demister in desulphurization system provided by the embodiment of the utility model, as shown in Figure 1, the desulphurization system The supply equipment of middle demister includes: waste water collection device, wastewater treatment equipment and reclamation set.
Above-mentioned waste water collection device can collect the waste water generated during gypsum dehydration;Above-mentioned wastewater treatment equipment is used for It is connected to waste water collection device and handles waste water to reach the rinse water standard of demister;Above-mentioned reclamation set is used for storeroom Waste water after reason and for supplying flushing water to demister.
The supply equipment of demister, is collected by waste water collection device in desulphurization system provided by the embodiment of the utility model The waste water that gypsum dehydration generates handles the waste water after collecting by wastewater treatment equipment, using reclamation set will that treated be useless Water leads to demister, supplies flushing water to demister, to realize the useless water reuse of gypsum dehydration generation, reduces de- The raised speed of liquid level in sulphur absorption tower, avoiding influences the steady of desulfuration absorbing tower operation because of return of waste water to desulfuration absorbing tower It is qualitative, improve the stability of desulfuration absorbing tower operation.
Meanwhile in desulphurization system provided by the embodiment of the utility model demister supply equipment, will treated waste water Demister is led to, to rinse demister, reduces amount of extra water needed for rinsing demister, realizes water conservation.
For the capacity of above-mentioned waste water collection device, set according to actual needs.Preferably, above-mentioned wastewater collection dress Set the wastewater collection amount that detachment system normally produces 1h or more that can satisfy.
Preferably, above-mentioned waste water collection device includes: wastewater collection pond, for covering the collecting pit lid of wastewater collection pond Plate.
For the ease of collecting waste water, waste water collection device is arranged in gypsum dehydration workshop.Specifically, above-mentioned wastewater collection Pond is arranged in gypsum dehydration workshop, and the waste water that gypsum dehydration generates is imported by gravity stream into wastewater collection pond.
The bottom of pond precipitating sludge and CaSO of wastewater collection pond in order to prevent4, above-mentioned wastewater collection pond is equipped with useless for stirring The agitating device of water, is periodically stirred waste water and periodic cleaning.
In order to improve service life, above-mentioned wastewater collection pond is buried concrete anticorrosion structure, and collecting pit cover board is coagulation Earth mulch plate
Certainly, it is other structures, such as sewage collecting box etc. that above-mentioned waste water collection device, which also may be selected, it is not limited on State embodiment.
In actual application, waste water is handled according to the flushing water quality standard of demister.Preferably, above-mentioned wastewater treatment dress Setting includes: wastewater equalization pond, conditioning tank cover board and waste water treater.
Above-mentioned wastewater equalization pond is used to adjust the pH value and hardness of waste water, and conditioning tank cover board is for covering wastewater equalization pond; Waste water treater is used to remove the suspended matter in waste water;Wherein, wastewater collection pond, wastewater equalization pond and waste water treater successively connect It is logical.It is understood that adjusting the pH value of waste water so that waste water is adjusted to neutrality.
In order to improve service life, above-mentioned wastewater equalization pond is buried concrete anticorrosion structure, and conditioning tank cover board is coagulation Earth mulch plate.Above-mentioned wastewater treatment equipment can also be other structures, it is not limited to this.
Preferably, above-mentioned wastewater equalization pond is equipped with pH regulating device and water demineralization device.In this way, facilitating adjusting waste water PH and hardness.The medicament of above-mentioned pH regulating device is lime, and the medicament of water demineralization device is Na2CO3.Certainly, pH tune is selected The medicament of regulating device and water demineralization device is other, it is not limited to this.
For the ease of the suspended matter in removal waste water, above-mentioned waste water treater includes filter and thickener, wherein filtering The filtering outlet of device is connected to reclamation set, and the outlet of the concentrated water of filter is connected to thickener, the supernatant outlet of thickener and The mud discharging mouth of the inlet communication of filter, concentrated water slot is connected to by filter press with wastewater collection pond.
Waste water after the filter, is divided into the production water and concentrated water of filtering, and the generation of filtering enters reclamation set, filtering it is dense Water enters thickener, is concentrated by thickener, and concentration time is not less than 12h, and the supernatant in thickener enters filter, mistake All production water of filter enters reclamation set.The mud cake outward transport that filter press generates, the filters pressing water that filter press generates enter waste water receipts Ji Chi.
Preferably, above-mentioned filter is tube microfiltration membrane, the tube microfiltration membrane the degree of automation is higher, occupied area compared with It is small.Certainly, it is other types that above-mentioned filter, which may be selected, it is not limited to above-described embodiment.
The suction parameter of above-mentioned tube microfiltration membrane are as follows: pH is neutral, suspended matter < 10000mg/L, hardness < 1000mg/L, Effluent quality is suspended matter < 100mg/L, and hardness < 100mg/L flow to water≤80% of thickener.
In order to make full use of the existing equipment in desulphurization system, above-mentioned filter press is the filters pressing that desulfurization wastewater handles workshop Machine.
Preferably, in above-mentioned desulphurization system demister supply equipment further include: for will be useless in waste water collection device Water is delivered to the first delivery pump of wastewater equalization pond, for the waste water in wastewater equalization pond to be delivered to the second of waste water treater Delivery pump.
In order to guarantee the regulating effect of wastewater equalization pond, the exit of above-mentioned second delivery pump is provided with pH meter, nephelometer And alkalimeter.
Further, above-mentioned first delivery pump and the second delivery pump are wear resistant corrosion resistant type centrifugal pump of horizontal axis.Certainly, Above-mentioned first delivery pump may be selected and the second delivery pump is other types, it is not limited to this.
Preferably, above-mentioned reclamation set includes: reuse water tank, for being connected to the reuse pipeline of reuse water tank and demister, The reuse water pump being serially connected on reuse pipeline.
The amount of storage of above-mentioned reuse water tank, is set according to actual needs.Preferably, above-mentioned reuse water tank at least can The processed waste water amount of operation teams and groups' time is stored, operation teams and groups' time is 8h.
In order to guarantee that the water energy in reuse water tank reaches reuse, above-mentioned reuse water tank is equipped with liquidometer, pH meter, nephelometer and alkali Degree meter, to detect the liquid level, pH value of water, turbidity and basicity in reuse water tank.
Further, above-mentioned reuse pipeline, the moisturizing pipeline of demister and the flushing of demister carry out waterpipe by three Port valve connection.Specifically, when triple valve is in the first valve position, reuse pipeline carrys out waterpipe with flushing and is connected to;At triple valve When the second valve position, moisturizing pipeline is carried out waterpipe with flushing and is connected to.
When needing self-complementary waterpipe moisturizing, switching three-way valve make moisturizing pipeline with rinse come waterpipe be connected to;When need Will from when reuse piped water supply, switching three-way valve make reuse pipeline with rinse to carry out waterpipe and be connected to.
Certainly, reuse pipeline also may be selected, moisturizing pipeline and the flushing of demister carry out waterpipe and tee tube are used to be connected to, and Reuse valve is arranged in reuse pipeline, and supplement pipeline is arranged water supply valve, controls water by control reuse valve and water supply valve Source incoming road.
For the ease of control, above-mentioned reuse water pump is electrodynamic pump, and triple valve is electrically operated valve.
In order to improve service life, above-mentioned reuse water tank is carbon steel Anti-corrosion box.Certainly, above-mentioned reuse water tank, which also may be selected, is Other materials, it is not limited to this.
The supply equipment of demister, the utility model embodiment also provide in the desulphurization system provided based on the above embodiment A kind of desulphurization system, the desulphurization system include: gypsum dehydration equipment, desulphurization system described in demister and above-described embodiment The supply equipment of middle demister, waste water collection device are connected to the wastewater outlet of gypsum dehydration equipment, and reclamation set can be to removing Day with fog supplies flushing water.
Since the supply equipment of demister in above-mentioned desulphurization system has above-mentioned technique effect, above-mentioned desulphurization system has upper The supply equipment of demister in desulphurization system is stated, then above-mentioned desulphurization system also has corresponding technical effect, and repeats no more herein.
The utility model embodiment additionally provides a kind of method of supplying water of demister in desulphurization system, removes in the desulphurization system The method of supplying water of day with fog is applied to wet desulfurization system, specifically, is applied to lime stone-wet desulfurization system, the desulphurization system The method of supplying water of middle demister specifically includes step:
S01 the waste water that gypsum dehydration generates) is collected:
Gypsum dehydration is carried out between gypsum dehydration, for the ease of collecting the waste water that gypsum dehydration generates, preferential selection is in stone The waste water that gypsum dehydration generates is collected between cream dehydration.Specifically, it is collected using wastewater collection pond or sewage collecting box etc.. Certainly, other modes can also be used to be collected, the utility model embodiment does not limit this.
S02 the waste water after collecting is handled) to reach the rinse water standard of demister:
For the processing mode of waste water, handled according to the rinse water standard of demister.Preferably, above-mentioned steps: Waste water after processing collection, specifically includes step: adjusting the pH value and hardness of waste water, removes the suspended matter in waste water.It can manage Solution, adjusts the pH value of waste water so that waste water is adjusted to neutrality.For the ease of adjusting pH value, the pH of waste water is adjusted using lime Value;For the ease of adjusting hardness, using Na2CO3Adjust the hardness of waste water.Certainly, the pH that other medicaments adjust waste water can also be used Value and hardness, it is not limited to this.
For the ease of removing oil removal, above-mentioned steps: the suspended matter in removal waste water, comprising steps of
Filtered wastewater, the concentrated water that thickening filtration generates, the supernatant generated after filtering and concentrating, to the sludge generated after concentration It is dehydrated, collects the water generated after dehydration and simultaneously mixed with the waste water being collected into, the drainage excessively that filtered wastewater and supernatant generate As treated waste water.It is understood that cross drainage and supernatant that waste water generates after filtering produce after filtering Raw drainage of crossing leads to demister to rinse demister.
Preferably, using the same filter filtered wastewater and supernatant.In this way, reducing the number of filter, reduce Cost.Certainly, different filter filtered wastewater and supernatant can also be used, it is not limited to this.
In order to make full use of existing equipment, preferential selection is using the filter press in desulfurization wastewater processing workshop to generating after concentration Sludge be dehydrated.
S03) by treated, waste water leads to demister to rinse demister:
Specifically, by reuse pipeline by the flushing of treated waste water is delivered to demister come waterpipe, and use three The moisturizing pipeline of port valve switching reuse pipeline and demister is carried out waterpipe with flushing and is connected to.When needing self-complementary waterpipe moisturizing, Switching three-way valve make moisturizing pipeline with rinse come waterpipe be connected to;When needing from reuse piped water supply, switching three-way valve makes Reuse pipeline with flushing come waterpipe be connected to.
Certainly, reuse pipeline also may be selected, moisturizing pipeline and the flushing of demister carry out waterpipe and tee tube are used to be connected to, and Reuse valve is arranged in reuse pipeline, and supplement pipeline is arranged water supply valve, controls water by control reuse valve and water supply valve Source incoming road.
For the ease of conveying, reuse pipeline is serially connected with reuse water pump.
For the ease of the waste water after Treatment for Reuse, using collect that treated waste water, reuse pipeline and the reuse of reuse water tank Water tank connection.
The method of supplying water of demister in above-mentioned desulphurization system will be located by collecting and handling the waste water of gypsum dehydration generation Waste water after reason leads to demister, to realize the useless water reuse of gypsum dehydration generation, reduces in desulfuration absorbing tower The raised speed of liquid level avoids the stability that desulfuration absorbing tower operation is influenced because of return of waste water to desulfuration absorbing tower, improves The stability of desulfuration absorbing tower operation.
Meanwhile in above-mentioned desulphurization system demister method of supplying water, will treated that waste water leads to demister, removed with rinsing Day with fog reduces amount of extra water needed for rinsing demister, realizes water conservation.
After collecting the waste water that gypsum dehydration generates, the sludge and CaSO in waste water in order to prevent4It further include step Deng precipitating It is rapid: the waste water after periodic agitation collection.Specifically, the waste water after preset time stirring is collected, also can periodic cleaning.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model. Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase Consistent widest scope.

Claims (9)

1. the supply equipment of demister in a kind of desulphurization system characterized by comprising
Waste water collection device, the waste water collection device can collect the waste water generated during gypsum dehydration;
It is connected to the waste water collection device and for handling the waste water to reach the waste water of the rinse water standard of demister Processing unit;
For the waste water of storing that treated and for the reclamation set to demister supply flushing water.
2. supply equipment according to claim 1, which is characterized in that the waste water collection device includes: wastewater collection pond, For covering the collecting pit cover board of the wastewater collection pond;Wherein, the wastewater collection pond is equipped with for stirring the waste water Agitating device.
3. supply equipment according to claim 1, which is characterized in that the wastewater treatment equipment includes:
For adjusting the pH value of the waste water and the wastewater equalization pond of hardness;
For covering the conditioning tank cover board of the wastewater equalization pond;
For removing the waste water treater of the suspended matter in the waste water;
Wherein, the waste water collection device, the wastewater equalization pond and the waste water treater are sequentially communicated.
4. supply equipment according to claim 3, which is characterized in that the wastewater equalization pond is equipped with pH regulating device and water Matter softening plant, wherein the medicament of the pH regulating device is lime, and the medicament of the water demineralization device is Na2CO3
5. supply equipment according to claim 3, which is characterized in that the waste water treater includes filter and concentration Slot, wherein the filtering outlet of the filter is connected to the reclamation set, concentrated water outlet and the concentration of the filter Slot connection, the inlet communication of the supernatant outlet of the thickener and the filter, the mud discharging mouth of the thickener pass through pressure Filter is connected to the wastewater collection pond.
6. supply equipment according to claim 5, which is characterized in that the filter is tube microfiltration membrane, the filters pressing Machine is the filter press that desulfurization wastewater handles workshop.
7. supply equipment according to claim 3, which is characterized in that further include:
For the waste water in the waste water collection device to be delivered to the first delivery pump of the wastewater equalization pond;For will be described Waste water in wastewater equalization pond is delivered to the second delivery pump of the waste water treater;
Wherein, the exit of second delivery pump is provided with pH meter, nephelometer and alkalimeter.
8. supply equipment described in any one of -7 according to claim 1, which is characterized in that the reclamation set includes: reuse Water tank, for being connected to the reuse pipeline of the reuse water tank and the demister, the recycle-water being serially connected on the reuse pipeline Pump;
Wherein, the reuse water tank is equipped with liquidometer, pH meter, nephelometer and alkalimeter;The reuse pipeline, the demister The flushing of moisturizing pipeline and the demister carrys out waterpipe and is connected to by triple valve.
9. a kind of desulphurization system, comprising: gypsum dehydration equipment and demister, which is characterized in that further include as in claim 1-8 Described in any item supply equipments, the waste water collection device are connected to the wastewater outlet of the gypsum dehydration equipment, and described time With device flushing water can be supplied to the demister.
CN201821487437.2U 2018-09-11 2018-09-11 The supply equipment of demister in desulphurization system, desulphurization system Active CN208757290U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108905587A (en) * 2018-09-11 2018-11-30 国电环境保护研究院有限公司 The method of supplying water and supply equipment of demister in desulphurization system, desulphurization system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108905587A (en) * 2018-09-11 2018-11-30 国电环境保护研究院有限公司 The method of supplying water and supply equipment of demister in desulphurization system, desulphurization system

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