CN204933124U - A kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit - Google Patents
A kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit Download PDFInfo
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- CN204933124U CN204933124U CN201520571226.7U CN201520571226U CN204933124U CN 204933124 U CN204933124 U CN 204933124U CN 201520571226 U CN201520571226 U CN 201520571226U CN 204933124 U CN204933124 U CN 204933124U
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Abstract
The utility model discloses a kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, it comprises: loose fiber bed, and described loose fiber bed comprises a U-shaped skeleton, and described U-shaped skeleton is provided with demist fiber; Flusher, described flusher comprises a stay pipe, described stay pipe is provided with two symmetrical the first cleaning hoses and the second cleaning hose, described first cleaning hose is provided with several first jet, the delivery port of these first jet is towards U-shaped skeleton, described second cleaning hose is provided with several second nozzles, and the delivery port of these second nozzles, towards U-shaped skeleton, described stay pipe is also provided with at least one the 3rd nozzle.The utility model space availability ratio is high, and low cost of manufacture not easily blocks, renewable, and separation accuracy is high, and decay resistance is strong, and handling safety, pressure drop is little, and energy consumption is low.
Description
Technical field
The utility model relates to a kind of scavenge unit, is specifically related to a kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit.
Background technology
In wet desulfurizing process, slurry solid content 20% when current desulfurizer generally designs, droplet content 75mg/m3 in desulfurizer demister exiting flue gas, the gypsum particle concentration being equivalent to carry in flue gas is 15mg/m3, this means in neat stress, to have at least the particle of 15mg/m3 to be that wet desulphurization device increases, unavoidable, simultaneously during actual motion, slurry solid content more than 20% or in absorption tower flue gas flow rate higher or demister effect is bad, capital is caused and is carried droplet content higher than 75mg/m3, now in flue gas, gypsum particle substrate concentration falls that to reach 20mg/m3 even higher, this concentration has reached the 20mg/m3 smoke dust discharge concentration limit value of key area in GB13223-2011 standard, close to the 30mg/m3 smoke dust discharge concentration limit value in area general in GB13223-2011 standard.Consider that desulfurizer inlet flue gas dust content is 40 ~ 60mg/Nm3 again, so flue gas is difficult to meet new environmental protection standard requirement after wet desulphurization.
At present, in wet desulphurization tail gas demist dedusting application, wet cottrell, Flat defroster and ridge type demister three kinds is mainly adopted.
Wet cottrell: wet cottrell is primarily of anode system (receiving electrode), cathod system (corona wire), HVDC power supply composition, high voltage electrostatic device is utilized to apply high-tension electricity to the corona wire be erected in wet cottrell during work, high-voltage electrostatic field is defined between yin, yang two-stage, under the effect of electric field force, in whole receiving electrode pipe, all form corona zone.When the flue gas of dust-laden, drop, aerosol, acid mist and other pollutants enters the electrostatic field being enough to make gas ionization, produce a large amount of negative ions and electronics and make dirt, acid mist, drop etc. charged, particle after charged moves to receiving electrode and deposits on receiving electrode under the effect of electric field force, in deposition process, receiving electrode inside pipe wall forms dust-laden liquid film, dust-laden liquid film flows in the collecting tank of wet cottrell bottom under gravity, thus reaches the object of dirt, drop, aerosol, acid mist and other pollutants in trapping flue gas.
Flat defroster: demister modules adopts the demister arrangements of horizontal structure form.Flat defroster can be installed in absorption tower, and flue gas, for flowing vertically to, is called the board-like demister of horizontal or is called for short Flat defroster; Flat defroster also can be installed vertically on absorption tower outlet horizontal flue, is called rectilinear board-like demister or chimney flue type demister.General employing Two-layer Beam supports or fixes.
Ridge type demister: demister modules adopts the demister arrangements of ridge structure form." people " font, rhombus and circle is divided into by profile.The advantage of ridge-roof type demister is that flue gas is less than the mean flow rate of horizontal cross-section in tower by the flow velocity of blade normal, though like this in tower flue gas flow rate higher, when by demister, because circulation area increases, flue gas flow rate is reduced.
Flat and ridge type demister all adopts blade construction, and this structure demisting efficiency is low, and separation accuracy is low, and solid particle easily deposits on blade, easily there is dead angle in cleaning process, and the inconvenient difficulty of mounting and dismounting, investment is large.Wet cottrell application conditions is harsher simultaneously, and structure is more complicated, and electric quantity consumption is large.
Utility model content
The utility model in order to solve the problem, thus provides a kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, described scavenge unit is arranged in desulfidation tail gas flue, and described scavenge unit comprises:
Loose fiber bed, described loose fiber bed comprises a U-shaped skeleton, the open end of described U-shaped skeleton is to air inlet, and described U-shaped skeleton two ends are fixed in desulfidation tail gas flue by support, and described U-shaped skeleton is provided with the demist fiber for removing dust-laden droplet in desulfidation tail gas;
Flusher, described flusher comprises a stay pipe, described stay pipe is provided with two symmetrical the first cleaning hoses and the second cleaning hose, described first cleaning hose is positioned at the upper end of U-shaped skeleton side, described first cleaning hose is provided with several first jet, the delivery port of these first jet is towards U-shaped skeleton, described second cleaning hose is positioned at the bottom of U-shaped skeleton opposite side, described second cleaning hose is provided with several second nozzles, these second nozzles delivery port towards U-shaped skeleton, described stay pipe is also provided with at least one the 3rd nozzle, the delivery port of the 3rd nozzle is towards the low order end of U-shaped skeleton.
In a preferred embodiment of the present utility model, the thickness of described loose fiber bed is 30 ~ 300mm, and pressure drop is 50 ~ 500Pa.
In a preferred embodiment of the present utility model, the flushing flow rate of first jet is 5 ~ 80L/min, and flushing water pressure is 1 ~ 6barg, and rinsing angle is 60 ~ 150 °, and washing time is spaced apart 30 ~ 300min.
In a preferred embodiment of the present utility model, the flushing flow rate of described second nozzle is 5 ~ 80L/min, and flushing water pressure is 1 ~ 6barg, and rinsing angle is 60 ~ 150 °, and washing time is spaced apart 30 ~ 300min.
By technique scheme, the beneficial effects of the utility model are:
The utility model structure is simple, and easy to use, space availability ratio is high, and low cost of manufacture not easily blocks, renewable, and separation accuracy is high, and decay resistance is strong, and handling safety, pressure drop is little, and energy consumption is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1, the utility model provide for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, it is arranged in desulfidation tail gas flue, and it comprises loose fiber bed 100 and flusher 200.
Loose fiber bed 100, it is arranged in desulfidation tail gas flue, and thickness is specially 30 ~ 300mm, pressure drop is specially 50 ~ 500Pa, it is that it specifically comprises a U-shaped skeleton 110, and the open end of U-shaped skeleton 110 is to air inlet for removing the dust-laden droplet entering desulfidation tail gas in desulfidation tail gas flue.
U-shaped skeleton 110 two ends are fixed in desulfidation tail gas flue 300 by support 120, and U-shaped skeleton 110 is for installing demist fiber.
Demist fiber, it is arranged on U-shaped skeleton 110, and it is for purifying desulfidation tail gas, and remove dust-laden droplet in desulfidation tail gas, impurity can be attached on adsorbing fiber, and clean tail gas can be discharged from the gas outlet of tail gas flue 300.
Flusher 200, it is arranged in desulfidation tail gas flue 300, and it is for cleaning the impurity be attached on demist fiber, improves the demisting efficiency of loose fiber bed 100.
Flusher 200 comprises a stay pipe 210, stay pipe 210 connects water source, stay pipe 210 is provided with two symmetrical the first cleaning hose 220 and the second cleaning hoses 230, first cleaning hose 220 is positioned at the upper end of U-shaped skeleton 110 side, first cleaning hose 220 is provided with several first jet 221, the delivery port of these first jet 221 is towards U-shaped skeleton 110, the water that stay pipe 210 can be inputted the first cleaning hose 220 by such first jet 221 be sprayed onto be positioned at U-shaped skeleton 110 upper end demist fiber on, by the Impurity removal on demist fiber.
Equally, second cleaning hose 230 is positioned at the bottom of U-shaped skeleton 110 opposite side, second cleaning hose 230 is provided with several second nozzles 231, these second nozzles 231 delivery port towards U-shaped skeleton 110, the water that stay pipe 210 can be inputted the second cleaning hose 230 by second nozzle 231 be sprayed onto be positioned at U-shaped skeleton 110 bottom demist fiber on, by the Impurity removal on demist fiber.
The delivery port that stay pipe 210 is also provided with at least one the 3rd nozzle the 211, three nozzle 211 who can be sprayed onto towards U-shaped skeleton the 110, three nozzle 211 be positioned at U-shaped skeleton 110 low order end adsorbing fiber on, by the Impurity removal on demist fiber.
First jet 221, second nozzle 231 and the 3rd nozzle 211 open and close simultaneously, wash amount is all 5 ~ 80L/min, flushing water pressure is all 1 ~ 6barg, rinsing angle is 60 ~ 150 °, washing time interval is all 30 ~ 300min, by matching of first jet 221, second nozzle 231 and the 3rd nozzle 211, makes water be fan-shaped ejection, backwash can be carried out to loose fiber bed 100, the impurity on demist fiber is rinsed out.
By above-mentioned enforcement, the tail gas after the utility model process, tail gas pressure drop is less than 100Pa, and dust-laden drop removal amount is about 22.85g/m
3, more than 1um drop clearance 99% in tail gas.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1., for a Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, it is characterized in that, described scavenge unit is arranged in desulfidation tail gas flue, and described scavenge unit comprises:
Loose fiber bed, described loose fiber bed comprises a U-shaped skeleton, the open end of described U-shaped skeleton is to air inlet, and described U-shaped skeleton two ends are fixed in desulfidation tail gas flue by support, and described U-shaped skeleton is provided with the demist fiber for removing dust-laden droplet in desulfidation tail gas;
Flusher, described flusher comprises a stay pipe, described stay pipe is provided with two symmetrical the first cleaning hoses and the second cleaning hose, described first cleaning hose is positioned at the upper end of U-shaped skeleton side, described first cleaning hose is provided with several first jet, the delivery port of these first jet is towards U-shaped skeleton, described second cleaning hose is positioned at the bottom of U-shaped skeleton opposite side, described second cleaning hose is provided with several second nozzles, these second nozzles delivery port towards U-shaped skeleton, described stay pipe is also provided with at least one the 3rd nozzle, the delivery port of the 3rd nozzle is towards the low order end of U-shaped skeleton.
2. one according to claim 1 is used for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, and it is characterized in that, the thickness of described loose fiber bed is 30 ~ 300mm, and pressure drop is 50 ~ 500Pa.
3. one according to claim 1 is used for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, it is characterized in that, the flushing flow rate of first jet is 5 ~ 80L/min, and flushing water pressure is 1 ~ 6barg, rinsing angle is 60 ~ 150 °, and washing time is spaced apart 30 ~ 300min.
4. one according to claim 1 is used for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit, it is characterized in that, the flushing flow rate of described second nozzle is 5 ~ 80L/min, and flushing water pressure is 1 ~ 6barg, rinsing angle is 60 ~ 150 °, and washing time is spaced apart 30 ~ 300min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520571226.7U CN204933124U (en) | 2015-07-31 | 2015-07-31 | A kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit |
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| CN201520571226.7U CN204933124U (en) | 2015-07-31 | 2015-07-31 | A kind of for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet scavenge unit |
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| CN204933124U true CN204933124U (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148641A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | Coal-fired power plant desulphurization tail gas dust-containing droplet removing apparatus and cleaning method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148641A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | Coal-fired power plant desulphurization tail gas dust-containing droplet removing apparatus and cleaning method thereof |
| CN105148641B (en) * | 2015-07-31 | 2017-07-18 | 上海安赐环保科技股份有限公司 | One kind is used for Desulphurization for Coal-fired Power Plant tail gas dust-laden droplet remove device and its cleaning method |
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Address after: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee after: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY CO., LTD. Address before: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee before: Shanghai Anhorn Mechanical Equipment Co., Ltd. |