CN203458942U - Ultrafine particle chemical agglomeration flocculation device based on wet desulphurization system - Google Patents
Ultrafine particle chemical agglomeration flocculation device based on wet desulphurization system Download PDFInfo
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- CN203458942U CN203458942U CN201320512860.4U CN201320512860U CN203458942U CN 203458942 U CN203458942 U CN 203458942U CN 201320512860 U CN201320512860 U CN 201320512860U CN 203458942 U CN203458942 U CN 203458942U
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- flocculant
- chemical agglomeration
- desulphurization
- reunion
- spray equipment
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Abstract
The utility model discloses an ultrafine particle chemical agglomeration flocculation device based on a wet desulphurization system. The device comprises a desulphurization tower (1) of the wet desulphurization system and is characterized in that a spray device is arranged in the desulphurization tower (1), wherein the spray device is provided with two liquid inlet pipes; one liquid inlet pipe passes through a first metering pump (4) and then is externally connected with a desulphurization liquid storage tank (2), and the other liquid inlet pipe passes through an air compressor (6) and a second metering pump (5) and then is externally connected with a chemical agglomeration flocculant storage tank (3); a nozzle (7) of the spray device synergistically sprays an agglomeration flocculant and desulphurization liquid into the desulphurization tower. According to the device, the agglomeration of ultrafine particles is promoted by a chemical agglomeration process in the desulphurization tower so that the ultrafine particles can be removed under the effect of the desulphurization system without influencing the combustion operation condition or changing the parameters of the desulphurization tower.
Description
Technical field
The utility model relates to a kind of ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system.
Background technology
China is current coal production and the country of consumption of maximum in the world, and burned-coal fly ash particle is one of main source of China's atmosphere pollution.Coal-fired superfine particulate matters (PM
2.5) pollution problem even more serious, on ultra-fine grain, be conventionally enriched with a large amount of toxic trace elements and organic pollution, and easily by human body, sucked, serious harm human health.Meanwhile, these fine graineds are also the key factors of bringing out the great environment events such as Global climate change, smog episode and depletion of the ozone layer.At present, the mainstream technology of controlling coal-fired ultrafine grain discharge is that pretreatment facility is set before cleaner, removes after making it be agglomerated into larger particles by physics or chemical action.Sound, optical, electrical, magnetic, heat, the various technology of phase transformation have facilitation in various degree to fine grain reunion.Chemical agglomeration technology can not affect normal production also without changing under the condition of existing cleaner, effectively promote coal-fired ultrafine grain to reunite, realize multiple pollutant cooperation-removal, have broad application prospects, but before cleaner, use reunion flocculation technique also to have some problems, because chemical agglomeration agent contains large quantity of moisture, after spraying into flue and mixing with flue gas, can cause flue-gas temperature to decline, dew-point temperature rises, be prone to cold end corrosion, harm electric power factory equipment.
Wet Flue Gas Desulfurization Technique is with the slurries of lime stone or lime, to make desulfurizing agent in the absorption tower of desulfurizer, in absorption tower, to flue gas spray washing, makes the SO in flue gas
2reaction generates CaSO
3and CaSO
4, realize flue gas desulfurization.Wet desulfurization system itself has certain dust collection capacity, but it can produce superfine particulate matter (PM in sweetening process
2.5), make wet desulfurization system after ultra-fine grain substrate concentration increase on the contrary.In desulphurization system, adopting chemical agglomeration flocculation technique to promote superfine particulate matter to reunite flocculates, can promote on the one hand this part fine grained and coal-fired fine grained to reunite with flocculating grows up, improve the removal effect of desulphurization system to superfine particulate matter, realize desulphurization system desulphurizing and dust-removing integral, can also avoid on the other hand before dust arrester, adopting chemical agglomeration technology problem, the problem includes: the problem of cold end corrosion.
The existing chemical agglomeration flocculation technique that adopts in desulphurization system is that reunion flocculant is successively sprayed in desulfurizing tower from doctor solution by different nozzles, likely cause the too early effective atomization that mixes or be difficult to guarantee reunion flocculant of reunion flocculant and doctor solution, reduced the efficiency of dust collection of wet desulfurization system, affect doctor solution desulfurized effect, and cost is higher.
Utility model content
Technical problem to be solved in the utility model; just be to provide a kind of ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system; by existing power plant wet desulphurization device is simply transformed; by reunion flocculant and the collaborative desulfurizing tower that sprays into of doctor solution; effectively promote that in desulfurizing tower, ultra-fine grain reunion flocculation forms bulky grain; improve wet desulfurization system efficiency of dust collection, do not affect doctor solution desulfurized effect, realize desulphurizing and dust-removing integral simultaneously.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system; the desulfurizing tower 1 that comprises wet desulfurization system; it is characterized in that: in described desulfurizing tower 1, be provided with spray equipment; spray equipment has two feed tubes;, external doctor solution holding vessel 2, another external chemical agglomeration flocculant holding vessel 3 after air compressor 6 and the second measuring pump 5 after the first measuring pump 4, the nozzle of spray equipment is by reunion flocculant and the collaborative desulfurizing tower that sprays into of doctor solution.
Nozzle 7 structures of described spray equipment are: the housing of a tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber, at the bottom of internal barrel, have osculum and form spout, reunion flocculant feed tube pierces into inner core from the bottom of housing cylinder, on housing stack shell, have up and down two radial holes and be communicated with respectively shell inner cavity and interior tube inner chamber, in being communicated with, the radial hole of the external air compressor air inlet pipe of radial hole of tube inner chamber, connection shell inner cavity is communicated with desulfurizing agent feed tube.The housing of described tubular can be for split type.
Described reunion flocculant is coal-fired ultrafine grain chemical agglomeration flocculant, by mass percent, is that guar gum 0.00005～0.005%, 0.0005～0.1% APES, 0.002～0.05% sodium chloride and water form.
The preparation method of this novel reunion flocculant: add running water in container, then add guar gum under vigorous stirring, after waiting guar gum to dissolve completely, add respectively APES, sodium chloride, be then stirred to completely and dissolve.
Spray equipment is connected with chemical agglomeration flocculant holding vessel, air compressor respectively by pipeline, and doctor solution sprays by spray equipment and pressure-air that reunion flocculant is produced by air compressor sprays into absorption tower gas approach after by nozzle 7 atomizations on spray equipment.By adjust measuring pump control reunion flocculant from doctor solution flow to be applicable to different flue gas operating modes, realize desulphurizing and dust-removing integral.
The advantage of this new device is:
1. this new device adopts chemical agglomeration method to promote superfine particulate matter to reunite in desulfurizing tower, enables to be removed under the effect of desulphurization system, can carry out not affecting burning operating condition and do not change under the condition of desulfurizing tower parameter.
2. the reunion flocculant raw material sources that this new device provides are extensive, cheap, environmentally friendly, building-up process simple and fast, to environment without harm.Reunion flocculant can well be used in desulfurizing tower alkaline environment, obvious to the reunion flocculation of ultra-fine grain in desulfurizing tower, can make wet desulfurization system improve more than 30% the removal efficiency of ultra-fine grain, and doctor solution desulfuration efficiency is had no significant effect.
3. this new device comprises the equipment such as air compressor, pump, agglomerator holding vessel, and simple in structure, cost is lower, only need can realize and utilize desulphurization plant desulphurizing and dust-removing integral the simple transformation of desulphurization plant.
Accompanying drawing explanation
Fig. 1 is the reunion flocculant configuration schematic diagram of this new device;
Fig. 2 is that the equipment of this new device forms schematic diagram;
Fig. 3 is the structure cross-sectional schematic of nozzle.
In figure: 1-desulfurizing tower, 2-doctor solution holding vessel, 3-reunion flocculant, 4-the first measuring pump, 5-the second measuring pump, 6-air compressor, 7-mouth spray.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the reunion flocculant configuration schematic diagram that Fig. 1 is this new device, the equipment that Fig. 2 is this new device forms schematic diagram.
Ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system of the present utility model; the desulfurizing tower 1 that comprises wet desulfurization system; in desulfurizing tower 1, be provided with spray equipment; spray equipment has two feed tubes;, external doctor solution holding vessel 2, another external chemical agglomeration flocculant holding vessel 3 after air compressor 6 and the second measuring pump 5 after the first measuring pump 4, the nozzle 7 of spray equipment is by reunion flocculant and the collaborative desulfurizing tower that sprays into of doctor solution.
Referring to Fig. 3, the nozzle arrangements of spray equipment is: the housing of a tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber, at the bottom of internal barrel, have osculum and form spout, reunion flocculant feed tube pierces into inner core from the bottom of housing cylinder, has up and down two radial holes and be communicated with respectively shell inner cavity and interior tube inner chamber on housing stack shell, and the external air compressor air inlet pipe of radial hole of tube inner chamber in being communicated with is communicated with desulfurizing agent feed tube, be communicated with the radial hole of shell inner cavity.The tubular shell of the present embodiment is split type.
Reunion flocculant is coal-fired ultrafine grain chemical agglomeration flocculant; by mass percent, be that guar gum 0.00005～0.005%, 0.0005～0.1% APES, 0.002～0.05% sodium chloride and water form; its preparation method is: in container, add running water; then under vigorous stirring, add guar gum; after dissolving completely Deng guar gum; add respectively APES, sodium chloride, be then stirred to completely and dissolve.
Agglomerator embodiment, in embodiment, percentage is mass percent.
Embodiment 1:
Formulation examples:
Guar gum: 0.0001%
APES: 0.002%
Sodium chloride: 0.001%
All the other are water.
Fig. 1 is reunion flocculant configuration schematic diagram, by each constituent content of power-plant flue gas and flying dust character are analyzed, determine each constituent content of reunion flocculant and with doctor solution flow-rate ratio, then by desulfurizing tower, export ultra-fine grain substrate concentration each parameter of reunion flocculant is revised, to reach best desulfurization and dedusting effect.
The doctor solution flowing out from doctor solution holding vessel is controlled flow by measuring pump and then from desulfurizing tower mouth spray, is sprayed, reunion flocculant by measuring pump control flow under the effect of air compressor from mouth spray atomization allot, promote superfine particulate matter reunion flocculation in desulfurizing tower, thereby realize wet desulphurization device desulphurizing and dust-removing integral.
Application example: adopt certain desulfurizing tower of electric power plant entrance flying dust to mix as simulated flue gas with the mist of configuration, by reuniting in formulation examples, the mode of flocculant by atomizing spray sprays in desulfurizing tower, carry out desulfurization and dedusting experiment, detect desulfurizing tower outlet ultra-fine grain substrate concentration and SO
2concentration.Its concrete operating mode is: SO in flue gas
2concentration is 1200mg/m
3, 50 degrees Celsius of doctor solution temperature, liquid-gas ratio is 18L/m
3, the flocculant concentration of reuniting in mixed solution is 0.06g/L.Experimental result shows: before not adding the middle reunion flocculant of formulation examples (1), it is 12%, SO that ultra-fine grain amount removal efficiency can reach
2removal efficiency is 93%, adds after the middle reunion flocculant of formulation examples (1), and ultra-fine grain amount removal efficiency can reach 38%, SO
2removal efficiency is still more than 90%.
Claims (3)
1. the ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system; the desulfurizing tower (1) that comprises wet desulfurization system; it is characterized in that: described desulfurizing tower is provided with spray equipment in (1); spray equipment has two feed tubes;, external doctor solution holding vessel (2), another external chemical agglomeration flocculant holding vessel (3) after air compressor (6) and the second measuring pump (5) after the first measuring pump (4), the nozzle of spray equipment (7) is by reunion flocculant and the collaborative desulfurizing tower that sprays into of doctor solution.
2. the ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system according to claim 1, it is characterized in that: the nozzle of described spray equipment (7) comprises the housing of tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber, at the bottom of internal barrel, have osculum and form spout, reunion flocculant feed tube pierces into inner core from the bottom of housing cylinder, on housing stack shell, have up and down two radial holes and be communicated with respectively shell inner cavity and interior tube inner chamber, the external air compressor air inlet pipe of radial hole of tube inner chamber in being communicated with, the radial hole that is communicated with shell inner cavity is communicated with desulfurizing agent feed tube.
3. the ultrafine grain chemical agglomeration flocculation plant based on wet desulfurization system according to claim 2, is characterized in that: the housing of the nozzle of described spray equipment (7) is split type.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512860.4U CN203458942U (en) | 2013-08-21 | 2013-08-21 | Ultrafine particle chemical agglomeration flocculation device based on wet desulphurization system |
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|---|---|---|---|
| CN201320512860.4U CN203458942U (en) | 2013-08-21 | 2013-08-21 | Ultrafine particle chemical agglomeration flocculation device based on wet desulphurization system |
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| CN203458942U true CN203458942U (en) | 2014-03-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056679A (en) * | 2015-08-11 | 2015-11-18 | 中国五环工程有限公司 | Method and device for removing PM2.5 (particulate matter) in WFGD (wet flue gas desulfurization) process |
| CN107213675A (en) * | 2017-07-19 | 2017-09-29 | 陈宗良 | A kind of marine alga liquid area synergist flocculation plant |
| CN107281806A (en) * | 2017-07-19 | 2017-10-24 | 陈宗良 | A kind of marine alga liquid area synergist filter |
| CN117942686A (en) * | 2024-01-25 | 2024-04-30 | 大连理工大学盘锦产业技术研究院 | Method and device for efficiently agglomerating, drying and recycling fine particles |
-
2013
- 2013-08-21 CN CN201320512860.4U patent/CN203458942U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056679A (en) * | 2015-08-11 | 2015-11-18 | 中国五环工程有限公司 | Method and device for removing PM2.5 (particulate matter) in WFGD (wet flue gas desulfurization) process |
| CN105056679B (en) * | 2015-08-11 | 2017-03-01 | 中国五环工程有限公司 | PM in process of wet desulphurization2.5Removal methods and its device |
| CN107213675A (en) * | 2017-07-19 | 2017-09-29 | 陈宗良 | A kind of marine alga liquid area synergist flocculation plant |
| CN107281806A (en) * | 2017-07-19 | 2017-10-24 | 陈宗良 | A kind of marine alga liquid area synergist filter |
| CN117942686A (en) * | 2024-01-25 | 2024-04-30 | 大连理工大学盘锦产业技术研究院 | Method and device for efficiently agglomerating, drying and recycling fine particles |
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Granted publication date: 20140305 |