CN105597483B - A kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method - Google Patents

A kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method Download PDF

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Publication number
CN105597483B
CN105597483B CN201610153279.6A CN201610153279A CN105597483B CN 105597483 B CN105597483 B CN 105597483B CN 201610153279 A CN201610153279 A CN 201610153279A CN 105597483 B CN105597483 B CN 105597483B
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China
Prior art keywords
flue gas
cooling
ontology
water
dissolved particles
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CN201610153279.6A
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Chinese (zh)
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CN105597483A (en
Inventor
赵健飞
吕国庆
王纯山
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北京赫宸智慧能源科技股份有限公司
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Priority to CN201610153279.6A priority Critical patent/CN105597483B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0003Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
    • B01D5/0012Vertical tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of devices for separating particles from gases or vapours
    • B01D50/004Combinations of devices relating to groups B01D45/00 and B01D47/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

The present invention proposes a kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method, including:Ontology;Entrance is set to ontology upper end;Guide portion is set in ontology, is connected to entrance;Cooling condensing zone, is set in ontology, is connected to guide portion;Impact zone is disturbed, is set in ontology, is connected to cooling condensing zone;Gathering ground is set in ontology, is connected to disturbance impact zone;Turnover Disengagement zone, connect in predetermined angle A with ontology, is connected to gathering ground;Outlet is connected to turnover Disengagement zone.Advantageous effect of the present invention:It is put forward for the first time the influence that fine particle is discharged in dissolved particles in wet desulfurization flue gas at home, it provides and is cooled with wet desulfuration tower exiting flue gas, make the part Water vapor condensation of supersaturated flue gas, remove in flue gas the device and method for the purpose of fine particle in dissolved particles in vapor, vapor and flue gas, fine particle atmosphere pollution is effectively reduced, current " haze " is administered significant.

Description

A kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method

Technical field

The present invention relates to dissolved particles removing, purification techniques fields in wet desulfurization flue gas, and it is de- to particularly relate to a kind of wet method Sulphur flue gas cooling method water vapor removing dissolved particles device and method.

Background technology

At present, domestic thermal power generation unit is to meet environmental protection to SO2Emission request, about 80% large and medium-sized coal unit It is mounted with wet desulphurization device (WFGD-Wet Flue Gas Desulfurization).Certain coal-burned industrial boilers are also installed Or planning that wet desulphurization device is installed, to meet increasingly stringent environmental requirement.With " ultra-clean discharge " (SO2≤ 35mg/Nm3;NOx≤50mg/Nm3;Flue dust≤5mg/Nm3) desired implementation, existing desulfurizing tower is adapted:" increasing spraying layer ", " cycles of intensified lime slurries ", " installing the equal scoreboard of flue gas additional ", " reinforce tower wall peripheral sealing and reduce flue gas escape " etc..These are arranged The contact for all enhancing high-temperature flue gas and lime slurry is applied, result all makes desulfurizing tower exiting flue gas " water content increase ", was in Saturation state.

Lime liquor slurry temperature degree is higher than environment temperature, the slurry dissolved particles (TDS-Total in wet desulfuration tower Dissolved Solids) content is high (15,000~35,000ppm).Therefore, " the slurry water vapour " that flue gas is taken out of contains A large amount of dissolved particles." the slurry vapor " being discharged with chimney floats in air, with evaporating for its moisture, contained by Dissolved particles will be floated in air with extremely subtle particle (containing PM2.5), it is extremely difficult to settle, this will aggravate subtle significantly The atmosphere pollution of grain, it is considered to be constitute one of the important origin cause of formation of " haze ".American National Environmental Protection Agency (EPA) is to " by extraneous item Dissolved particles content has stringent limitation in the industrial water of part stimulation splashing evaporation ".The country there is no this limitation, also not with molten Particle (TDS) parameter in order to control is solved, quantitative study dissolved particles evaporate the correlation for aggravating air fine particle and polluting with vapor Research and report.The present invention is at home for the first time by the dirt of " dissolved particles " and air fine particle in lime slurry and vapor Dye links together, and is trapped removing.

Invention content

The present invention proposes a kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method, solves existing There is problem above-mentioned in technology.

The technical proposal of the invention is realized in this way:

A kind of device of wet desulfurization flue gas cooling method water vapor removing dissolved particles, including:

Ontology;

Entrance is set to the ontology upper end;

Guide portion is set in the ontology, is connected to the entrance;

Cooling condensing zone, is set in the ontology, is connected to the guide portion;

Impact zone is disturbed, is set in the ontology, is connected to the cooling condensing zone;

Gathering ground is set in the ontology, is connected to the disturbance impact zone;

Turnover Disengagement zone, connect in predetermined angle A with the ontology, is connected to the gathering ground;

Outlet, is connected to the turnover Disengagement zone.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Guide plate is set in the guide portion.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Cooling tube is set in the cooling condensing zone.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Corrugated plating is set in the disturbance impact zone.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Header tank is set in the gathering ground.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Smoke bending plate is set in the turnover Disengagement zone.

Preferably, the predetermined angle A is 45 °~90 °.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Cooling column;

First cooling water pipeline, one end are connected to the cooling column, and the other end is connected to the cooling tube.

Further, the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, is also wrapped It includes:

Second cooling water pipeline, one end are connected to the cooling column, and the other end is connected to the guide portion;

Water jet is set in the guide portion, is connected to second cooling water pipeline.

A kind of method of wet desulfurization flue gas cooling method water vapor removing dissolved particles, includes the following steps:

Keep pending flue gas tentatively cooling and is oriented to;

The flue gas by the preliminary cooling and guiding is set further to be cooled into droplet, the droplet traps the flue gas Become dust-laden droplet after middle fine particle, dust-laden droplet outer surface covers liquid film again, and increase forms condensed water precipitation;

The condensed water is set to generate disturbance and collision, while flue gas power-assisted, its own gravity being subject to using the condensed water Effect and effect of inertia further do steam-water separation and trap the fine particle in the flue gas, collect the water isolated, and will The flue gas discharge isolated;

So that the flue gas of the discharge is transferred in the predetermined angle A in flowing, steam-water separation is further done, then by institute State flue gas emission.

Beneficial effects of the present invention are:

The device and method of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, explicitly points out Dissolved particles in flue gas are discharged with the water vapour in flue gas, will be with subtle particles float with evaporating for its moisture Among air, the atmosphere pollution of subtle particle is exacerbated, and provides and is cooled with wet desulfuration tower exiting flue gas, Make the part Water vapor condensation of supersaturated flue gas, removes in dissolved particles and the flue gas in the vapor and vapor in flue gas Fine particle be purpose relevant apparatus and method, can effectively contained humidity in recovered flue gas, greatly reduce dissolved particles The atmosphere pollution of the fine particle generated with vapor discharge, the especially pollution of PM2.5 have current " haze " improvement Extremely important realistic meaning.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art With obtain other attached drawings according to these attached drawings.

Fig. 1 is a kind of structural representation of the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention Figure.

In figure:

1, ontology;2, entrance;3, guide portion;4, cooling condensing zone;5, impact zone is disturbed;6, gathering ground;7, turnover separation Area;8, it exports;9, guide plate;10, cooling tube;11, corrugated plating;12, header tank;13, smoke bending plate;14, cooling column;15, first Cooling water pipeline;16, the second cooling water pipeline.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

As shown in Figure 1, a kind of device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, Including:

Ontology 1;

Entrance 2 is set to 1 upper end of ontology;

Guide portion 3 is set in ontology 1, is connected to entrance 2;

Cooling condensing zone 4, is set in ontology 1, is connected to guide portion 3;

Impact zone 5 is disturbed, is set in ontology 1, is connected to cooling condensing zone 4;

Gathering ground 6 is set in ontology 1, is connected to disturbance impact zone 5;

Turnover Disengagement zone 7, connect in predetermined angle A with ontology, is connected to gathering ground 6;

Outlet 8 is connected to turnover Disengagement zone 7.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Guide plate 9 is set in guide portion 3.

Wherein, the quantity of guide plate 9 is several, and guide plate 9 and the flow direction of flue gas are in 20 °~35 °, and guide plate 9 is high Degree is 300~600mm, such as 300mm, 350mm, 400mm, 450mm, 500mm, 550mm or 600mm, can specifically be wanted according to pressure drop Depending on asking.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Cooling tube 10 is set in cooling condensing zone 4.

Wherein, the quantity of cooling tube 10 is several, and several cooling tubes 10 form cooling tube bundle in cooling condensing zone 4.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Corrugated plating 11 is set in disturbance impact zone 5.

Wherein, corrugated plating 11 is along flow of flue gas direction 300~800mm of height, for example, 300mm, 400mm, 500mm, 600mm, 700mm or 800mm, can be depending on actual conditions.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Header tank 12 is set in gathering ground 6.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Smoke bending plate 13 is set in turnover Disengagement zone 7.Smoke bending plate 13 can be such that flue gas is whirled up, and further detach Go out to be mixed with the water of dissolved particles and fine particle.

Wherein it is preferred to the predetermined angle A be 45 °~90 °, be specifically as follows 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, 85 ° or 90 °.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Cooling column 14;

First cooling water pipeline 15, one end are connected to cooling column 14, and the other end is connected to cooling tube 10.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention can also include:

Second cooling water pipeline 16, one end are connected to cooling column 14, and the other end is connected to guide portion 3;

Water jet is set in guide portion 3, is connected to the second cooling water pipeline 16.

Wherein, water jet is set in guide portion 3, can more effectively remove the fine particle in flue gas, it will be a part of wet The required supplement water of method desulfurization, by spray into be supplemented in come.

Wherein it is preferred to which the second cooling water pipeline 16 can also be connected to guide plate 9.

Wherein it is preferred to which outlet 8 is specially escape pipe, escape pipe is Cyclic dart shape, is further reduced dissolved particles with water Steam is discharged and the fine particle of generation.

The device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention borrows cooled dehydrated method, Fine particle contained in dissolved particles and the flue gas in vapor is trapped, wet desulfuration tower can be mounted on and exported, it can be by wet method Desulfurizing tower exit gas temperature cools down 5 DEG C~8 DEG C, so that large quantity of moisture in the supersaturated flue gas in desulfurizing tower outlet is condensed out, desulfurization Fine particle contained in dissolved particles and flue gas in flue gas vapor, including PM2.5, it is one also to mix the water with precipitation Body.In ontology 1,10 internal circulation cooling water of cooling tube, guide portion 3 is equipped with water jet, while can also be flowed inside guide plate 9 Logical cooling water, and corrugated plating 11 is installed.Flue gas is from top to bottom or horizontal, is in rotational flow along the guiding of guide plate 9, generates preliminary cold But and rotation, then pass through the further cooling condensation of cooling tube 10, finally flow through corrugated plating 11 and do steam-water separation, vapor with The rotational flow of flue gas is separated from flue gas, and the water containing dissolved particles and the fine particle being captured being separated is suitable 1 inner wall of ontology flows from above to below, and flows into header tank 12, and flue gas flows from above to below, and turns above 12 side of header tank Roll over Disengagement zone 7 flow shape it is at 45 °~90 ° turnover, by inertia through smoke bending plate 13 be further separated out it is therein be mixed with dissolving The water of grain and fine particle.

The present invention also provides a kind of method of wet desulfurization flue gas cooling method water vapor removing dissolved particles, including it is following Step:

Keep pending flue gas tentatively cooling and is oriented to;

Make further to be cooled into droplet by flue gas that is tentatively cooling and being oriented to, droplet traps in flue gas after fine particle As dust-laden droplet, dust-laden droplet outer surface covers liquid film again, and increase forms condensed water precipitation;

Flue gas power-assisted, the self gravitation effect and used for so that condensed water is generated disturbance and collision, while being subject to using condensed water Property effect, further do steam-water separation and trap flue gas in fine particle, collect the water isolated, and the flue gas that will be isolated Discharge;

So that the flue gas of discharge is transferred in predetermined angle A in flowing, steam-water separation is further done, then by flue gas emission.

In conjunction with the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, specially:

Make pending flue gas in the tentatively cooling of guide portion 3 and be oriented to, flue gas is in rotational flow;

Make further to be cooled into droplet in cooling condensing zone 4 by flue gas that is tentatively cooling and being oriented to, droplet traps cigarette Become dust-laden droplet in gas after fine particle, dust-laden droplet outer surface covers liquid film again, and increase forms condensed water precipitation;

So that condensed water is generated disturbance and collision in disturbance impact zone 5, at the same be subject to using condensed water flue gas power-assisted, itself Gravity and effect of inertia further do steam-water separation and trap the fine particle in flue gas, collected and detached by gathering ground 6 The water gone out, and the flue gas isolated is expelled to turnover Disengagement zone 7;

So that the flue gas of discharge is transferred in predetermined angle A in the flowing of turnover Disengagement zone 7, further does steam-water separation, so Flue gas is passed through into 8 discharge of outlet afterwards.

The device and method of wet desulfurization flue gas cooling method water vapor removing dissolved particles of the present invention, explicitly points out Dissolved particles in flue gas are discharged with the water vapour in flue gas, will be with subtle particles float with evaporating for its moisture Among air, the atmosphere pollution of subtle particle is exacerbated, and provides and is cooled with wet desulfuration tower exiting flue gas, Make the part Water vapor condensation of supersaturated flue gas, removes in dissolved particles and the flue gas in the vapor and vapor in flue gas Fine particle be purpose relevant apparatus and method, can effectively contained humidity in recovered flue gas, greatly reduce dissolved particles The atmosphere pollution of the fine particle generated with vapor discharge, the especially pollution of PM2.5 have current " haze " improvement Extremely important realistic meaning.Flue-gas temperature can be reduced by 5 DEG C~8 DEG C simultaneously, and recycle a large amount of water, for example, usual 1 × 600MW coal units, if wet desulfuration tower exit gas temperature is 50 DEG C, flue gas can take about 50~60t/h out of from desulfurizing tower Water, the device and method of the wet desulfurization flue gas cooling method water vapor removing dissolved particles through the invention can will Flue-gas temperature is reduced to 45 DEG C~42 DEG C.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (5)

1. a kind of device of wet desulfurization flue gas cooling method water vapor removing dissolved particles, which is characterized in that including:
Ontology (1);
Entrance (2) is set to the ontology (1) upper end;
Guide portion (3) is set in the ontology (1), is connected to the entrance (2);
Guide plate (9) is set in the guide portion (3), and the flow direction of guide plate (9) and flue gas is in 20 °~35 °;
Cooling condensing zone (4), is set in the ontology (1), is connected to the guide portion (3);
Cooling tube (10) is set in the cooling condensing zone (4);
It disturbs impact zone (5), is set in the ontology (1), is connected to the cooling condensing zone (4);
Corrugated plating (11) is set in the disturbance impact zone (5);
Gathering ground (6) is set in the ontology (1), is connected to the disturbance impact zone (5);
Header tank (12) is set in the gathering ground (6);
It transfers Disengagement zone (7), connect in predetermined angle A with the ontology, be connected to the gathering ground (6);
The predetermined angle A is 45 °~90 °;
It exports (8), is connected to the turnover Disengagement zone (7).
2. the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles according to claim 1, feature exist In further including:
Smoke bending plate (13) is set in the turnover Disengagement zone (7).
3. the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles according to claim 1, feature exist In further including:
Cooling column (14);
First cooling water pipeline (15), one end are connected to the cooling column (14), and the other end is connected to the cooling tube (10).
4. the device of wet desulfurization flue gas cooling method water vapor removing dissolved particles according to claim 3, feature exist In further including:
Second cooling water pipeline (16), one end are connected to the cooling column (14), and the other end is connected to the guide portion (3);
Water jet is set in the guide portion (3), is connected to second cooling water pipeline (16).
5. the wet desulphurization cigarette of wet desulfurization flue gas cooling method water vapor removing dissolved particles device according to claim 1 Air cooling method water vapor removing dissolved particles method, which is characterized in that include the following steps:
Keep pending flue gas tentatively cooling and is oriented to;
The flue gas by the preliminary cooling and guiding is set further to be cooled into droplet, the droplet traps thin in the flue gas Become dust-laden droplet after microparticle, dust-laden droplet outer surface covers liquid film again, and increase forms condensed water precipitation;
The condensed water is set to generate disturbance and collision, while flue gas power-assisted, the self gravitation effect being subject to using the condensed water And effect of inertia, it further does steam-water separation and traps the fine particle in the flue gas, collect the water isolated, and will separation The flue gas discharge gone out;
So that the flue gas of the discharge is transferred in predetermined angle A in flowing, further does steam-water separation, then arrange the flue gas It puts.
CN201610153279.6A 2016-03-17 2016-03-17 A kind of wet desulfurization flue gas cooling method water vapor removing dissolved particles device and method CN105597483B (en)

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CN108114583A (en) * 2017-08-16 2018-06-05 山东天境环保科技有限公司 Control flue gas correlation atmospheric acid particulate matter and low-carbon control haze method and system
CN108036346B (en) * 2017-08-16 2020-09-08 山东天境环保科技有限公司 Smoke energy-saving micro-exhaust method and device suitable for boiler

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CN2751235Y (en) * 2004-09-25 2006-01-11 吴金泉 Wet method divided flow rotating spray desulfurization and dust collection device
CN102767837B (en) * 2012-07-24 2015-01-07 西安交通大学 System for recovering water contained in flue gas and synchronously removing PM2.5 (Particulate Matter)
CN103721548B (en) * 2014-01-17 2015-09-09 东南大学 PM in a kind of promotion wet desulphurization neat stress 2.5the desulfurizer removed and method thereof
CN205517112U (en) * 2016-03-17 2016-08-31 北京赫宸环境工程股份有限公司 Wet?flue?gas desulfurization flue gas cooling method desorption vapor dissolves granule device

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