CN204039090U - Process heat-engine plant desulfurized waste water evaporate to dryness tower - Google Patents
Process heat-engine plant desulfurized waste water evaporate to dryness tower Download PDFInfo
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- CN204039090U CN204039090U CN201420510913.3U CN201420510913U CN204039090U CN 204039090 U CN204039090 U CN 204039090U CN 201420510913 U CN201420510913 U CN 201420510913U CN 204039090 U CN204039090 U CN 204039090U
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Abstract
The utility model relates to the heat-engine plant desulfurized waste water evaporate to dryness tower of a kind of process, it comprises the evaporate to dryness tower cylindrical shell that top is communicated with exhaust pass, also together with there being gas approach on evaporate to dryness tower cylindrical shell, in the medullary ray of gas approach and evaporate to dryness tower cylindrical shell, an imaginary circle is circumscribed, the center of circle of imaginary circle is positioned on the medullary ray of evaporate to dryness tower cylindrical shell, the top that evaporate to dryness tower cylinder inboard wall is positioned at gas approach is at least provided with a circle atomizing nozzle along short transverse, below is provided with a circle tuyere, imaginary circle is cut in outside the center line of discharge of the multiple atomizing nozzles in one circle atomizing nozzle, multiple wind nozzle outlet centerline dip in one circle tuyere point to imaginary circle.This device effectively can process saltiness height waste water, has structure simple, can increase electric precipitator inlet flue gas humidity, improves Electric Scrubber Efficiency, realizes waste water zero release truly and reduces dust granules thing to air environmental pollution.
Description
Technical field
The utility model relates to field of waste water treatment, particularly relates to and is applicable to be difficult to process saltiness high field of waste water treatment in heat-engine plant desulfurized waste water and other industry, be specifically related to the heat-engine plant desulfurized waste water evaporate to dryness tower of a kind of process.
Background technology
Shortage of water resources and efflux wastewater to have become international problem to the pollution of environment, and no matter thermal power plant, as using water rich and influential family, considers from economy or environment protection, water saving and to reduce efflux wastewater most important.Therefore research and development is applicable to the device of thermal power plant's production, life sewage treatment and reuse; reduce investment and the working cost of sewage disposal; realize the target of wastewater zero discharge, Chinese national economy and social development and environment protection are of great practical significance.
At present, the whole nation 90% and above thermal power generation unit use Wet Flue Gas Desulfurization Technique, and the desulfurization process of steel industry, produce a large amount of desulfurization wastewaters.And wet desulphurization waste water is high concentration suspended matter, high chlorine root, high saliferous, high-concentration heavy metal waste water, environmental pollution is extremely strong, and intractability is also comparatively large, and Ye Shi power plant realizes the maximum difficult point of wastewater zero discharge.The domestic disposal options to desulfurization wastewater mainly pays the utmost attention to the rear reuse of process, if without reuse condition, to qualified discharge after its process.Because desulfurization wastewater is through preliminary treatment, be still high chlorine root, high saliferous and containing micro heavy waste water, its Reuse Range limitation is very large.
Current, fuel-burning power plant desulfurization wastewater often adopts neutralization, precipitation, flocculation and conventional chemical treatment techniques that is concentrated and clarification, but chemical process processing cost is high, and constantly need add pharmaceutical chemicals, labor intensive, can not recycle, in another chemical process processed waste water, chlorion still cannot be removed.As adopted waste liquid evaporate to dryness tower to process desulfurization wastewater, then there are not the problems referred to above.
Utility model content
For Shortcomings in prior art, the purpose of this utility model there is provided that a kind of cost is low, structure adds electric precipitator inlet flue gas humidity simply simultaneously, can realize the process heat-engine plant desulfurized waste water evaporate to dryness tower of heat-engine plant desulfurized waste water zero release truly.
For achieving the above object, the utility model have employed following technical scheme: process heat-engine plant desulfurized waste water evaporate to dryness tower, comprise evaporate to dryness tower cylindrical shell, the top of described evaporate to dryness tower cylindrical shell has exhanst gas outlet, shown exhanst gas outlet is communicated with exhaust pass, the bottom of described exhaust pass is positioned at the top of evaporate to dryness tower cylindrical shell, and the bottom of exhaust pass is provided with mechanical filter;
The bottom of described evaporate to dryness tower cylindrical shell is provided with the scraper slag removing machine of the macrobead thing discharge for being deposited at the bottom of tower;
Described evaporate to dryness tower cylindrical shell has smoke inlet, shown smoke inlet is communicated with gas approach, in the medullary ray of this gas approach and evaporate to dryness tower cylindrical shell, an imaginary circle is circumscribed, the center of circle of described imaginary circle is positioned on the medullary ray of evaporate to dryness tower cylindrical shell, its radius is 0.2-0.8 times of evaporate to dryness tower cylindrical shell radius, further, this imaginary circle arranged transversely;
The inwall of described evaporate to dryness tower cylindrical shell is at least provided with a circle atomizing nozzle along short transverse, often enclose atomizing nozzle and comprise multiple atomizing nozzle, often enclose the inwall circumference setting of the multiple atomizing nozzles in atomizing nozzle along evaporate to dryness tower cylindrical shell, the nearest circle atomizing nozzle of distance evaporate to dryness tower cylinder body bottom is positioned at the top of gas approach, and is cut in described imaginary circle outside the center line of discharge of multiple atomizing nozzles in this circle atomizing nozzle;
The inwall circumference of described evaporate to dryness tower cylindrical shell is also provided with a circle tuyere, and a described circle tuyere is positioned at the below of gas approach and comprises multiple tuyere, and described multiple wind nozzle outlet centerline dip points to the boundary line of described imaginary circle.
As optimization, the sense of rotation of the fine drop of described atomizing nozzle ejection is contrary with the sense of rotation of the flue gas sprayed from gas approach.
As optimization, the inwall of described evaporate to dryness tower cylindrical shell is provided with multi-turn atomizing nozzle along short transverse, and the spacing of two adjacent rings atomizing nozzle is equal.
As optimization, the spacing of often enclosing adjacent two atomizing nozzles in atomizing nozzle is equal.
The utility model is as the preposition fume treatment technology of thionizer, heat smoke obtains moistening and lowering temperature at this, the spray cooling process of desulfuration absorbing tower entrance can be replaced, and increase smoke moisture, be conducive to the dust removing effects improving electric dust-removing equipment, compared with prior art, the utility model also tool have the following advantages:
1, the utility model utilizes between fuel-burning power plant air preheater outlet and electric precipitator import has discrepancy in elevation flue, centre arranges this evaporate to dryness tower apparatus, utilization enters waste water evaporate to dryness tower flue gas heat and passes into high temperature air carries out atomization and vaporization process to desulfurization wastewater, micron order fine solid particles in waste water, various ion, be blended in flue gas with dust after heavy metal element drying crystalline, macrobead thing to fall at the bottom of tower and is discharged by scraper slag removing machine at the bottom of tower, small particle enters electric precipitator with flue gas and is caught by electrode, with the outer row of ash, waste steam is arranged outward with flue gas, the real zero release of desulfurization wastewater can not only be realized like this, reduce the discharge of thermal power plant's dust granules thing, meet the actual requirement of environmental protection, and can processing cost be saved.
2, the desulfurization wastewater evaporate to dryness tower that the utility model provides conveniently can solve a current desulfurization wastewater process difficult problem, and processing method is simple, investment and running cost low, put goods on the market after running, existing various desulfurization wastewater treatment facility can be replaced and use in firepower factory.Will reduce desulfurization wastewater processing cost and equipment maintenance cost largely, promote the use of in the desulfurization wastewaters such as coal-fired thermal power generation unit, market outlook are huge.
3, the atomizing of flue gas and warm air heat and atomizing nozzle is utilized, the quick evaporate to dryness of waste water can be accelerated, and ensure that in waste water evaporate to dryness tower, flue-gas temperature remains on flue gas acid dew point temperature, and the humidity that flue gas enters electric precipitator can be improved, improve electric precipitator dust removing effects.
Accompanying drawing explanation
Fig. 1 is the structural representation processing heat-engine plant desulfurized waste water evaporate to dryness tower in embodiment 1.
Fig. 2 is the sectional view that Figure 1A-A locates.
Fig. 3 is the sectional view that Figure 1B-B locates.
Fig. 4 is the structural representation of desulfurization wastewater evaporate to dryness tower structure in embodiment 2.
In accompanying drawing: 1-exhaust pass; 2-mechanical filter; 3-evaporate to dryness tower cylindrical shell; 4-atomizing nozzle; 5-tuyere; 6-scraper slag removing machine; 7-gas approach.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
embodiment 1:process heat-engine plant desulfurized waste water evaporate to dryness tower, as shown in Figure 1, comprise exhaust pass 1, mechanical filter 2, evaporate to dryness tower cylindrical shell 3, atomizing nozzle 4, tuyere 5, scraper slag removing machine 6, gas approach 7, this waste water evaporate to dryness tower utilizes the effect of evaporate to dryness tower, be difficult to recycle saltiness height waste water to desulfurization wastewater or other, first be atomized by atomizing nozzle, after in evaporate to dryness tower, carry out evaporation curable process.
At the top of evaporate to dryness tower cylindrical shell 3, there is exhanst gas outlet, shown exhanst gas outlet is communicated with exhaust pass 1, the bottom of exhaust pass 1 is positioned at the top of evaporate to dryness tower cylindrical shell 3, and the bottom of exhaust pass 1 is provided with mechanical filter 2, mechanical filter 2 can be the types such as window shutter, filtering net or cloth bag type.The bottom of evaporate to dryness tower cylindrical shell 3 is provided with the scraper slag removing machine 6 of the macrobead thing discharge for being deposited at the bottom of tower.
Evaporate to dryness tower cylindrical shell 3 has smoke inlet, shown smoke inlet is communicated with gas approach 7, the medullary ray of this gas approach 7 and the interior imaginary circle of evaporate to dryness tower cylindrical shell 3 circumscribed, the center of circle of described imaginary circle is positioned on the medullary ray of evaporate to dryness tower cylindrical shell 3, its radius is 0.2-0.8 times of evaporate to dryness tower cylindrical shell 3 radius, and, this imaginary circle arranged transversely, namely this imaginary circle is parallel with the cross section of evaporate to dryness tower cylindrical shell 3, sets this imaginary circle as benchmark imaginary circle for convenience of describing.
The inwall of evaporate to dryness tower cylindrical shell 3 is at least provided with a circle atomizing nozzle along short transverse, often enclose atomizing nozzle and comprise multiple atomizing nozzle 4, often enclose the inwall circumference setting of the multiple atomizing nozzles 4 in atomizing nozzle along evaporate to dryness tower cylindrical shell 3, a circle atomizing nozzle nearest bottom distance evaporate to dryness tower cylindrical shell 3 is positioned at the top of gas approach 7, and is cut in described imaginary circle outside multiple atomizing nozzles 4 jet exit medullary ray in this circle atomizing nozzle.
As optimization, the inwall of evaporate to dryness tower cylindrical shell 3 can be provided with multi-turn atomizing nozzle along short transverse, and the spacing of two adjacent rings atomizing nozzle is equal, and the spacing of often enclosing adjacent two atomizing nozzles 4 in atomizing nozzle is equal.Benchmark imaginary circle is cut in outside the center line of discharge of the multiple atomizing nozzles in wherein nearest bottom multi-turn atomizing nozzle middle distance evaporate to dryness tower cylindrical shell 3 circle.Atomizing nozzle in each circle adopts following current or arranged crosswise, multiple atomizing nozzles 4 jet exit medullary ray often in circle can along being cut in an imaginary circle outward clockwise or counterclockwise, the center of circle of the imaginary circle often in circle is all positioned on the medullary ray of evaporate to dryness tower cylindrical shell 3, and all imaginary circle are all equal with benchmark imagination radius of a circle, the distance between adjacent two imaginary circle equals the distance between two adjacent rings atomizing nozzle.
The inwall circumference of evaporate to dryness tower cylindrical shell 3 is also provided with a circle tuyere 5, and encloses the below that tuyere 5 is positioned at gas approach 7, and comprises multiple tuyere 5, and multiple tuyere 5 center line of discharge tilts to point to the boundary line of benchmark imaginary circle.
The sense of rotation of the fine drop of atomizing nozzle 4 nozzle ejection is contrary with the sense of rotation of the flue gas sprayed from gas approach 7.Particularly, when the multiple atomizing nozzles 4 jet exit medullary ray in atomizing nozzle 4 is cut in imaginary circle (when there being multi-turn atomizing nozzle along outer counterclockwise, the imaginary circle of the counterclockwise circumscribed correspondence of center line of discharge of atomizing nozzle in often enclosing), gas approach 7 medullary ray is cut in corresponding imaginary circle along outer clockwise, thus the sense of rotation of the fine drop making atomizing nozzle 4 nozzle spray is contrary with the sense of rotation of the flue gas sprayed from gas approach 7, reinforcement flue gas and fine drop (becoming fine drop after waste water atomization) mix and enhanced heat exchange.In addition due to the draft of evaporate to dryness tower cartridge outlet flue, force air-flow to rise, result forms a spinning updraft in evaporate to dryness tower cylindrical shell.Gas approach also can adopt clockwise circle to arrange or branch into multiple gas approachs to connect with evaporate to dryness tower cylindrical shell 3 and arrange.
The waste water evaporate to dryness tower that during use, the utility model provides can comprise the steps:
1) waste water and pressurized air are by a certain percentage, spray into evaporate to dryness tower cylindrical shell 3 through atomizing nozzle 4, and particularly, can arrange an a waste pipe A1 and compressed air pipe A2, this waste pipe A1 is communicated with atomizing nozzle with compressed air pipe A2;
2) be atomized as fine drop in evaporate to dryness tower cylindrical shell after waste water enters atomizing nozzle 4, fine drop mixes with flue gas and warm air and is heated to temperature of saturation, until evaporate to dryness in evaporate to dryness tower cylindrical shell; Pressurized air and the waste water pressure ratio entered in atomizing nozzle 4 is 0.25 ~ 0.6, and the fine drop particle diameter after atomizing nozzle 4 is atomized is 0 ~ 200 μm, and speed is 50 ~ 100m/s.
3) high-temperature flue gas enters evaporate to dryness tower cylindrical shell 3 through gas approach 7 and fully mixes with the waste water of the atomization sprayed into.
4) warm air sprays in evaporate to dryness tower cylindrical shell 3 through tuyere 5, strengthen the disturbance of air-flow in evaporate to dryness tower cylindrical shell, strengthening waste water and flue gas heat exchange, accelerate the evaporate to dryness of fine drop, reduce the evaporate to dryness time, flue-gas temperature in evaporate to dryness tower cylindrical shell can be controlled further and reduce amplitude, ensure that in evaporate to dryness tower cylindrical shell, flue-gas temperature is on flue gas acid dew point temperature, prevent liquid to be collected in bottom, cause evaporate to dryness tower cylindrical shell to corrode and being bonded together of lime-ash.
5) resistates in flue gas after fine particle and waste water evaporate to dryness collides and agglomeration, form macrobead thing, macrobead thing is deposited on the bottom of dry tower cylindrical shell under gravity and centrifugal action, and the scraper slag removing machine 6 through being arranged on dry tower cylinder body bottom is discharged, after mechanical filter 2 filtration of other small particle then with the first bottom through exhaust pass 1 of flue gas (being also positioned at evaporate to dryness tower cylindrical shell top) simultaneously, enter in electric precipitator through exhaust pass 1 and be removed.
embodiment 2:consider the layout practical situation of the industry flues such as iron and steel, papermaking and gasification, can consider to adopt the desulfurization wastewater evaporate to dryness tower structure shown in accompanying drawing 4, this desulfurization wastewater evaporate to dryness tower structure only has different as follows from the heat-engine plant desulfurized waste water of the process in embodiment 1 evaporate to dryness tower:
1, the bottom of exhaust pass 1 extends in evaporate to dryness tower cylindrical shell 3, the part specifically between the atomization nozzle 4 of evaporate to dryness tower cylindrical shell 3 and tuyere 5.High-temperature flue gas in evaporate to dryness tower cylindrical shell 3 is entered under gravity from gas approach 7, force air descend, again because the bottom of exhaust pass 1 is positioned at evaporate to dryness tower cylindrical shell bottom, in the action of gravity of its draft and high-temperature flue gas, result forms one and rotates downdraft in evaporate to dryness tower cylindrical shell 3.
2, evaporate to dryness tower cylindrical shell 3 top and in evaporate to dryness tower cylindrical shell 3 part arranged between atomizing nozzle 4, there is smoke inlet, shown smoke inlet is communicated with gas approach 7.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. process heat-engine plant desulfurized waste water evaporate to dryness tower, it is characterized in that: comprise evaporate to dryness tower cylindrical shell (3), the top of described evaporate to dryness tower cylindrical shell (3) has exhanst gas outlet, shown exhanst gas outlet is communicated with exhaust pass (1), the bottom of described exhaust pass (1) is positioned at the top of evaporate to dryness tower cylindrical shell (3), and the bottom of exhaust pass (1) is provided with mechanical filter (2);
The bottom of described evaporate to dryness tower cylindrical shell (3) is provided with the scraper slag removing machine (6) of the macrobead thing discharge for being deposited at the bottom of tower;
Described evaporate to dryness tower cylindrical shell (3) has smoke inlet, shown smoke inlet is communicated with gas approach (7), the medullary ray of this gas approach (7) and the interior imaginary circle of evaporate to dryness tower cylindrical shell (3) circumscribed, the center of circle of described imaginary circle is positioned on the medullary ray of evaporate to dryness tower cylindrical shell (3), its radius is 0.2-0.8 times of evaporate to dryness tower cylindrical shell (3) radius, further, this imaginary circle arranged transversely;
The inwall of described evaporate to dryness tower cylindrical shell (3) is at least provided with a circle atomizing nozzle along short transverse, often enclose atomizing nozzle and comprise multiple atomizing nozzle (4), often enclose the inwall circumference setting of the multiple atomizing nozzles (4) in atomizing nozzle along evaporate to dryness tower cylindrical shell (3), the nearest circle atomizing nozzle in distance evaporate to dryness tower cylindrical shell (3) bottom is positioned at the top of gas approach (7), and is cut in described imaginary circle outside the center line of discharge of multiple atomizing nozzles (4) in this circle atomizing nozzle;
The inwall circumference of described evaporate to dryness tower cylindrical shell (3) is also provided with a circle tuyere (5), described circle tuyere (5) is positioned at the below of gas approach (7) and comprises multiple tuyere (5), and described multiple tuyere (5) center line of discharge tilts to point to the boundary line of described imaginary circle.
2. process according to claim 1 heat-engine plant desulfurized waste water evaporate to dryness tower, is characterized in that: the sense of rotation of the fine drop that described atomizing nozzle (4) sprays is contrary with the sense of rotation of the flue gas sprayed from gas approach (7).
3. process according to claim 1 heat-engine plant desulfurized waste water evaporate to dryness tower, is characterized in that: the inwall of described evaporate to dryness tower cylindrical shell (3) is provided with multi-turn atomizing nozzle along short transverse, and the spacing of two adjacent rings atomizing nozzle is equal.
4. the heat-engine plant desulfurized waste water evaporate to dryness of the process according to claim 1 or 3 tower, is characterized in that: the spacing of often enclosing adjacent two atomizing nozzles (4) in atomizing nozzle is equal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510913.3U CN204039090U (en) | 2014-09-05 | 2014-09-05 | Process heat-engine plant desulfurized waste water evaporate to dryness tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420510913.3U CN204039090U (en) | 2014-09-05 | 2014-09-05 | Process heat-engine plant desulfurized waste water evaporate to dryness tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150552A (en) * | 2014-09-05 | 2014-11-19 | 重庆大学 | Distillation drying tower for treating desulfurized waste water in thermal power plant |
| CN107089694A (en) * | 2017-05-25 | 2017-08-25 | 华南理工大学 | A kind of swirling flow atomizing desulfurization wastewater coalescence dedusting self-adaptive processing device and method |
| CN111821835A (en) * | 2020-08-18 | 2020-10-27 | 吉林同鑫热力集团股份有限公司 | Energy-saving environment-friendly low-resistance film scattering dust-removing desulfurization and denitrification device |
-
2014
- 2014-09-05 CN CN201420510913.3U patent/CN204039090U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150552A (en) * | 2014-09-05 | 2014-11-19 | 重庆大学 | Distillation drying tower for treating desulfurized waste water in thermal power plant |
| CN104150552B (en) * | 2014-09-05 | 2016-01-20 | 重庆大学 | The heat-engine plant desulfurized waste water evaporate to dryness tower of a kind of process |
| CN107089694A (en) * | 2017-05-25 | 2017-08-25 | 华南理工大学 | A kind of swirling flow atomizing desulfurization wastewater coalescence dedusting self-adaptive processing device and method |
| CN111821835A (en) * | 2020-08-18 | 2020-10-27 | 吉林同鑫热力集团股份有限公司 | Energy-saving environment-friendly low-resistance film scattering dust-removing desulfurization and denitrification device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150905 |
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