CN203470227U - Nested nozzle integrating functions of desulfurization and dust removal and used for wet desulfurization device of coal-fired power plant - Google Patents

Abstract

Provided is nested nozzle integrating functions of desulfurization and dust removal and used for a wet desulfurization device of a coal-fired power plant. The nested nozzle is characterized by comprising a cylindrical shell (1); an inner cylinder is inversely buckled on the inner surface of the bottom of the cylindrical shell, and an inner cylinder cavity forms a mixing chamber (6); the bottom of the inner cylinder is provided with a small opening used as a spout (5); an aggregated flocculant liquid inlet pipe (4) penetrates into the inner cylinder from the outside of the cylindrical bottom of the shell, and the cylindrical body of the shell is vertically provided with two radial holes which are communicated with the inner cavity of the shell and the inner cylinder cavity respectively, wherein the radial hole communicated with the inner cylinder cavity is externally connected with an air compressor air inlet pipe (3), and the radial hole communicated with the inner cavity of the shell is communicated with a desulfurizer liquid inlet pipe (2). On one hand, the nested nozzle ensures effective atomization of aggregated flocculant and is favorable for promoting aggregation and flocculation of ultrafine particles, on the other hand, the nested nozzle avoids too early mixing between the aggregated flocculant and doctor solution and prevents the desulfurization efficiency from decreasing due to the fact that the doctor solution is aggregated and flocculated under the effect of the aggregated flocculant, and the purpose that the cost of desulfurization and dust removal integration of a desulfurizing tower is low can be achieved effectively.

Description

Suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral

Technical field

The utility model relates to a kind of nozzle, especially relates to a kind of suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral.

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 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 technology 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, adopt chemical agglomeration technology, in desulfurizing tower, spray the reunion of reunion flocculant promotion superfine particulate matter, can promote on the one hand this part fine grained and coal-fired fine grained to reunite 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.

Prior art 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 suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral, it sprays in desulfurizing tower by reunion flocculant and doctor solution simultaneously, improve wet desulfurization system efficiency of dust collection, do not affect doctor solution desulfurized effect simultaneously.

Solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral, it is characterized in that: the housing 1 that comprises tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber 6, at the bottom of internal barrel, have osculum and form spout 5, reunion flocculant feed tube 4 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.

On the basis of the above, the utility model can also be done further improvement:

The housing 1 of described tubular is split type.

The flocculation liquid of reuniting enters in mixing chamber by feed tube, then under compressed-air actuated effect, after atomization, sprays, and doctor solution sprays after entering outer layer pipe by doctor solution feed tube.

Technique effect of the present utility model is embodied in:

1. this nozzle has guaranteed effective atomization of reunion flocculant on the one hand, being conducive to promote superfine particulate matter to be reunited flocculates, avoided on the other hand reunion flocculant to mix with the too early of doctor solution, prevent from doctor solution reuniting flocculation and cause desulfuration efficiency to decline under the effect of reunion flocculant, has effectively realized desulfurizing tower desulphurizing and dust-removing integral;

2. this nozzle can be used for doctor solution and reunion flocculant sprays simultaneously, and utilize the original wet desulfurization system nozzle of this nozzle exchange and set up associated conduit and can realize the transformation of desulfurizing tower desulphurizing and dust-removing integral, and without other transformations, with low cost.

Accompanying drawing explanation

Accompanying drawing is suit nozzle cross-sectional schematic of the present utility model.

In figure: 1-tubular shell, 2-desulfurizing agent feed tube, 3-air compressor tube connector, 4-reunion flocculant feed tube, 5-spout, 6-mixing chamber.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the utility model.

As accompanying drawing, suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral of the present utility model, the housing 1 that comprises tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber 6, at the bottom of internal barrel, have osculum and form spout 5, reunion flocculant feed tube 4 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 1 of the tubular of the present embodiment is split type.

Reunion flocculant enters mixing chamber 6 by reunion flocculant feed tube 4, and atomization under the effect of the air being entered by air compressor tube connector 3, then from spout 5 ejections.Doctor solution enters nozzle from desulfurizing agent feed tube 2 and then sprays.

Claims (2)

1. the suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral, it is characterized in that: the housing (1) that comprises tubular, at the bottom of it, on inner face, back-off has an inner core, inner core chamber forms mixing chamber (6), at the bottom of internal barrel, have osculum and form spout (5), reunion flocculant feed tube (4) 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 (3) 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 (2).

2. the suit nozzle for coal-burning power plant's wet desulphurization device desulphurizing and dust-removing integral according to claim 1, is characterized in that: the housing of described tubular (1) is for split type.

Images