CN211936362U - Multi-point powder spraying desulfurization system based on SDA method - Google Patents
Multi-point powder spraying desulfurization system based on SDA method Download PDFInfo
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- CN211936362U CN211936362U CN201922314206.2U CN201922314206U CN211936362U CN 211936362 U CN211936362 U CN 211936362U CN 201922314206 U CN201922314206 U CN 201922314206U CN 211936362 U CN211936362 U CN 211936362U
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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Abstract
The utility model discloses a desulfurization system dusts at multiple spot based on SDA method relates to industry flue gas desulphurization unit. The utility model discloses a: a desulfurizing tower; rotating the atomizer; a flue gas outlet pipe; and the inlet of the desulfurized ash conveying tank is communicated with the desulfurized ash bin through a pipeline, the outlet of the desulfurized ash conveying tank is communicated with the feed inlet of the Venturi powder pump, the air inlet of the Venturi powder pump is communicated with the air outlet of the electric dust remover, and the air outlet of the Venturi powder pump is communicated with the powder spraying mechanisms respectively. The utility model discloses flue gas and desulfurizer mix inadequately in to current rotatory spraying desulfurization technique tower, and the serious extravagant problem of tower inner space is through arranging powder spraying point in the annular space of not co-altitude week side in the tower, make full use of idle space, optimize reaction space for mix more fully, compare with original technology, the desulfurization ash directly spouts and adds the tower, and the circulation multiplying power is bigger, and the desulfurizer utilization ratio is higher, has improved desulfurization efficiency.
Description
Technical Field
The utility model relates to an industrial flue gas desulfurization device, more specifically say, relate to a desulfurization system dusts a plurality of points based on SDA method, are applicable to the purification treatment who contains the sulphur flue gas in the industry.
Background
SO2Is the atmosphereOne of the main pollutants is also the main reason for causing acid rain, and along with the enhancement of the awareness of people on environmental protection, the nation has gone out a series of policies on SO2The discharge is controlled. At present, wet, semi-dry and dry desulphurization processes are mostly adopted in industry to carry out desulphurization on flue gas, wherein the rotary spray drying method in the semi-dry process is developed and applied in the 70 and 80 th ages of the 20 th century.
The rotary spray drying desulfurization method takes lime slurry after digestion reaction as a desulfurizing agent, and the main component of the desulfurizing agent is Ca (OH)2The lime slurry is sprayed into the desulfurizing tower through the atomizer to contact and react with the flue gas, and SO in the flue gas2Absorbed and the water in the desulfurizing agent is evaporated and dried. The rotary spray drying desulfurization technology is widely adopted because the desulfurization efficiency is between that of a wet method and that of a dry method, no wastewater is generated in the process, the price of the desulfurizer is low, and the process operation is simple.
Related technical solutions are disclosed in the prior art for rotary spray desulfurization, such as patent publication nos: CN 204841399U, published: on day 09 of 12 months 2015, the invention is named as: the application discloses a desulfurization and dust removal device based on a rotary spray drying method, wherein a flue gas distributor and a rotary atomizer are arranged at the top of a desulfurization tower, and coke oven flue waste gas enters the desulfurization tower through the flue gas distributor; a desulfurizing liquid high-level buffer tank is arranged above the side of the desulfurizing tower; a cloth bag dust removal system is arranged, the inlet of the cloth bag dust removal system is communicated with the middle part of the inner cavity of the desulfurizing tower, and the outlet of the cloth bag dust removal system is provided with an induced draft fan communicated with a chimney; the inlet of the desulfurization ash bin is respectively communicated with the bottom of the desulfurization tower and the other outlet of the cloth bag dust removal system; the outlets of the desulfurizer bin and the desulfurization ash bin are communicated with a desulfurization solution preparation tank, and the desulfurization solution preparation tank is connected to a desulfurization solution high-level buffer tank through a desulfurization solution delivery pump; the high-level buffer tank of the desulfurization solution is connected to the rotary atomizer through a pipeline, and an electric regulating valve and an electromagnetic flowmeter are arranged in the pipeline. The desulfurization dust collector of this application has solved the secondary pollution problem of desulfurization ash to the environment. However, the application also has some disadvantages, for example, the desulfurization dust removal device of the application still has a certain improvement space compared with a wet method in desulfurization efficiency, the mixing of the flue gas and the desulfurizing agent in the desulfurization tower is not sufficient, and the space in the tower is seriously wasted, so that the desulfurization efficiency is low; the desulfurization ash pulping recycling increases the load of the atomizer, aggravates the abrasion of the atomizing wheel, increases the operation cost and the like.
In conclusion, how to overcome the defect of low desulfurization efficiency of the existing rotary spray desulfurization technology is a technical problem to be solved urgently in the prior art.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims at overcoming the lower not enough of desulfurization efficiency that current rotatory spraying desulfurization technique exists, provide a desulfurization system dusts a plurality of points based on SDA method, improved desulfurization efficiency.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a desulfurization system dusts a plurality of points based on SDA method, include:
the top of the desulfurizing tower is communicated with a flue gas distributor, and the flue gas distributor is communicated with a gas outlet of the electric dust collector through a pipeline;
the rotary atomizer is positioned at the top of the desulfurization tower, an outlet of the rotary atomizer is positioned at the top end of the interior of the desulfurization tower, and an inlet of the rotary atomizer is communicated with an outlet of the top tank above the rotary atomizer; the inlet of the top tank is communicated with the slaked lime slurry tank through a pipeline; an inner flue is connected to the inner side wall of the desulfurizing tower, an inlet of the inner flue is communicated with an air outlet of the electric dust collector through a pipeline, and an outlet of the inner flue is opposite to an outlet of the rotary atomizer above;
the flue gas outlet pipe is communicated with the lower part of the desulfurizing tower, the flue gas outlet pipe is communicated with the air inlet of the bag type dust collector through a pipeline, the air outlet of the bag type dust collector is communicated with a chimney through a pipeline, and an ash discharge port of the bag type dust collector is communicated with the desulfurizing ash bin through a pipeline;
the inlet of the desulfurized ash conveying tank is communicated with the desulfurized ash bin through a pipeline, the outlet of the desulfurized ash conveying tank is communicated with the feed inlet of a Venturi powder pump, the air inlet of the Venturi powder pump is communicated with the air outlet of the electric dust collector, and the air outlet of the Venturi powder pump is respectively communicated with the powder spraying mechanisms; the flue gas distributor is internally provided with a powder spraying mechanism, the top end inside the desulfurizing tower is provided with the powder spraying mechanism, the inner side wall of the desulfurizing tower is provided with the powder spraying mechanism, the inside flue is internally provided with the powder spraying mechanism, and the flue gas outlet pipe is internally provided with the powder spraying mechanism.
As a further improvement, the electric dust remover is communicated with the chimney through a flue gas bypass pipeline.
As a further improvement, the powder spraying mechanism installed on the inner side wall of the desulfurizing tower is divided into a plurality of layers from top to bottom, and each layer comprises a plurality of powder spraying mechanisms which are positioned at the same height and circumferentially distributed on the inner side wall of the desulfurizing tower.
As a further improvement, the mechanism of dusting includes the injection pipe and installs in the elbow of injection pipe tip, installs the injection pipe axis of every mechanism of dusting on the desulfurizing tower inside wall through the centre of a circle of this mechanism of dusting place high department desulfurizing tower cross section, and the elbow axis of installing every mechanism of dusting on the desulfurizing tower inside wall is the same with the contained angle that corresponds the injection pipe axis.
As a further improvement, the elbow axis included angle of any two adjacent powder spraying mechanisms installed on each layer on the inner side wall of the desulfurizing tower is theta.
As a further improvement, the elbow axis included angle of any two adjacent powder spraying mechanisms installed on each layer on the inner side wall of the desulfurizing tower is 90 degrees.
As a further improvement of the utility model, an atomized water nozzle is arranged between two adjacent powder spraying mechanisms on each layer on the inner side wall of the desulfurizing tower.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a multiple spot desulfurization system that dusts based on SDA method is through adding the mechanism that dusts at desulfurization system different positions, different angles to make gas, liquid, solid three-phase mix more fully in the desulfurizing tower, the desulfurizer is more abundant with the flue gas reaction, and the desulfurization is more high-efficient.
(2) The utility model discloses a desulfurization system dusts at multiple spot based on SDA method adds the mechanism of dusting through the not co-altitude annular space of week survey in the desulfurizing tower to optimize the interior granule concentration distribution of tower, make idle space can make full use of in the tower.
(3) The utility model discloses a desulfurization system dusts at multiple spot based on SDA method adds the atomized water nozzle through each mechanism of dusting within a definite time to make the dry powder obtain moist activation, the desulfurizer is more high-efficient with flue gas reaction.
(4) The utility model discloses a multiple spot desulfurization system that dusts based on SDA method, convenient operation compares in current rotatory spray drying desulfurization technology, and the desulfurization ash directly spouts and adds into the desulfurizing tower in, and the non-circulation gets into slurrying system, and it is higher to have desulfurization ash circulation multiplying power, under the condition of equal quick lime consumption, the desulfurizer utilization ratio is higher, the better characteristics of desulfurization efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a process flow diagram of an embodiment SDA method-based multi-point powder injection desulfurization system;
FIG. 2 is a schematic structural diagram of a desulfurizing tower in the embodiment;
FIG. 3 is a first schematic sectional view taken along A-A in FIG. 2;
FIG. 4 is a second schematic sectional view taken along A-A of FIG. 2;
FIG. 5-a1 is a numerical simulation of SO2 concentration distribution in a conventional desulfurizing tower (processed from original color pictures to black and white pictures);
5-b1 is a numerical simulation diagram of SO2 concentration distribution in the desulfurizing tower after the multi-point powder spraying desulfurization system based on SDA method of the utility model is adopted (processed from original color pictures into black and white pictures);
FIG. 5-a2 is a numerical simulation (original color picture) of SO2 concentration distribution in a conventional desulfurizing tower;
fig. 5-b2 is a numerical simulation diagram (original color picture) of the distribution of the concentration of SO2 in the desulfurization tower after the multi-point powder spraying desulfurization system based on the SDA method of the present invention is adopted.
The reference numerals in the schematic drawings illustrate: 1-an electric dust collector; 2-a flue gas bypass pipeline; 3-a flue gas distributor; 4-internal flue; 5-rotating the atomizer; 6-a desulfurizing tower; 7-powder spraying mechanism; 8-a bag filter; 9-desulfurization ash bin; 10-top tank; 11-slaked lime slurry tank; 12-a venturi powder pump; 13-a chimney; 14-desulfurized fly ash conveying tank; 15-flue gas outlet pipe; 16. atomizing water nozzles.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
Referring to fig. 1-2, the multi-point powder injection desulfurization system based on the SDA method of the present embodiment includes:
the top of the desulfurizing tower 6 is communicated with a flue gas distributor 3, and the flue gas distributor 3 is communicated with a gas outlet of the electric dust collector 1 through a pipeline;
the rotary atomizer 5 is positioned at the top of the desulfurizing tower 6, the outlet of the rotary atomizer 5 is positioned at the top end inside the desulfurizing tower 6, and the inlet of the rotary atomizer 5 is communicated with the outlet of the top tank 10 above; the inlet of the top tank 10 is communicated with a slaked lime slurry tank 11 through a pipeline; an inner flue 4 is connected to the inner side wall of the desulfurizing tower 6, an inlet of the inner flue 4 is communicated with an air outlet of the electric dust collector 1 through a pipeline, and an outlet of the inner flue 4 is over against an outlet of the rotary atomizer 5 above;
the flue gas outlet pipe 15 is communicated with the lower part of the desulfurizing tower 6, the flue gas outlet pipe 15 is communicated with an air inlet of the bag type dust collector 8 through a pipeline, an air outlet of the bag type dust collector 8 is communicated with the chimney 13 through a pipeline, and an ash discharge port of the bag type dust collector 8 is communicated with the desulfurizing ash bin 9 through a pipeline;
the inlet of the desulfurized ash conveying tank 14 is communicated with the desulfurized ash bin 9 through a pipeline, the outlet of the desulfurized ash conveying tank 14 is communicated with the feed inlet of the venturi powder pump 12, the air inlet of the venturi powder pump 12 is communicated with the air outlet of the electric dust collector 1, and the air outlet of the venturi powder pump 12 is respectively communicated with the powder spraying mechanisms 7; a powder spraying mechanism 7 is installed in the flue gas distributor 3, the powder spraying mechanism 7 is installed at the top end inside the desulfurizing tower 6, the powder spraying mechanism 7 is installed on the inner side wall of the desulfurizing tower 6, the powder spraying mechanism 7 is installed in the internal flue 4, and the powder spraying mechanism 7 is installed in the flue gas outlet pipe 15; in the embodiment, the powder spraying mechanisms 7 comprise spraying pipes and elbows arranged at the ends of the spraying pipes, a sealing ring is arranged at the joint of each powder spraying mechanism 7 and the desulfurizing tower 6, and the adjustable elbows are additionally arranged at the ends of the spraying pipes, so that the spraying angles of the powder spraying mechanisms 7 can be adjusted to adapt to the distribution of gas flow fields in the tower; the method comprises the following steps that desulfurized ash particles collected by a bag type dust collector 8 are blown into a desulfurizing tower 6 again through a powder spraying mechanism 7 through air force to carry out desulfurization operation, so that the desulfurization efficiency is obviously improved, the consumption of slaked lime slurry is reduced, and the production cost is reduced, specifically, flue gas with a certain flow speed and discharged by an electric dust collector 1 enters a Venturi powder pump 12 from an air inlet of the Venturi powder pump 12 and is discharged from an air outlet of the Venturi powder pump 12, and in the process, along with the flow of the flue gas in the Venturi powder pump 12, desulfurized ash particles in a desulfurized ash conveying tank 14 are sucked into the Venturi powder pump 12 along a feed inlet of the Venturi powder pump 12 and are discharged into the desulfurizing tower 6 along with the flue gas, so that the effect of pneumatic conveying is achieved on one hand, on the other hand, the flue gas to be desulfurized and the desulfurized ash can be effectively mixed, and the desulfurization efficiency is improved; wherein, utilize former flue gas to provide pneumatic transport, adopt the venturi principle to spout the desulfurization ash, avoided utilizing compressed air to carry the change of flue gas composition in the desulfurizing tower 6 that the desulfurization ash brought to avoid desulfurization efficiency to descend.
The SDA method-based multi-point powder injection desulfurization system of the embodiment is used as follows: the flue gas is dedusted by an electric precipitator 1 and then enters a desulfurizing tower 6 through a flue gas distributor 3 and an internal flue 4, slaked lime slurry is pumped into a top tank 10 from a slaked lime slurry tank 11 and then is atomized into fog drops of about 50 mu m by a rotary atomizer 5 to be mixed with the flue gas, and SO in the flue gas2The acid substances and the fog drops are subjected to chemical reaction; meanwhile, the desulfurized ash is sprayed into the desulfurizing tower 6 through the powder spraying mechanisms 7 at different positions, is fully mixed with the flue gas, and is cooperated with slaked lime slurry to perform a desulfurization reaction with the flue gas, so that the desulfurization effect is enhanced; the desulfurized flue gas enters the bag type dust collector 8 through a flue gas outlet pipe 15 at the lower part of the desulfurizing tower 6 to remove smoke dust particles, and then is discharged from a chimney 13. Wherein, the desulfurization ash is collected in the desulfurization ash bin 9 through the ash discharge port of the bag type dust collector 8, one part of the desulfurization ash in the desulfurization ash bin 9 is transported and discharged outside, and the other part of the desulfurization ash is pneumatically conveyed into the desulfurization ash conveying tank 14 for recycling.
In the embodiment, the powder spraying mechanisms 7 are arranged and distributed at different positions in the desulfurizing tower 6, and the powder spraying amounts at different positions are set according to the reaction degree of flue gas in the desulfurizing tower 8, so that the powder spraying amounts are distributed in multiple stages, and in order to avoid powder adhesion and atomizer abrasion, the distances of the powder spraying mechanisms 7 extending into the desulfurizing tower 6 are different, specifically according to the distribution of flow fields in the desulfurizing tower 6; if the desulfurization ash needs to be humidified, a humidifying pipeline is additionally arranged, the water spraying amount of the humidifying pipeline is set according to the flue gas temperature at different positions, and the specific powder spraying positions, the number of 7 powder spraying mechanisms and the combined mode of powder spraying and humidifying are flexible and changeable and can be adjusted according to the actual working condition.
In this embodiment, the dry ash adopts the desulfurization ash of cyclic use (also can add calcium base desulfurizer dry powder in the desulfurization ash), make full use of the active ingredient in the waste material, reduced the use amount of former desulfurizer, and different positions department all is equipped with dusting mechanism 7 in the desulfurizing tower 6, has increased granule concentration distribution in the tower, and the flue gas mixes more fully with the desulfurizer, has improved desulfurization efficiency, has reduced the running cost.
The multi-point powder spraying desulfurization system based on the SDA method of the embodiment adds the powder spraying mechanism 7 at different positions and different angles of the desulfurization system, so that gas, liquid and solid phases in the desulfurization tower 6 are mixed more sufficiently, a desulfurizer reacts more sufficiently with flue gas, and the desulfurization is more efficient.
The multi-point powder spraying desulfurization system based on the SDA method is convenient to operate, and has the characteristics of high desulfurizer utilization rate, low operation cost, high desulfurization efficiency and the like compared with the existing rotary spray drying desulfurization process.
Example 2
The structure of the multi-point powder injection desulfurization system based on the SDA method of the present embodiment is substantially the same as that of embodiment 1, and further: the electric dust remover 1 is communicated with the chimney 13 through the flue gas bypass pipeline 2, and when the desulfurization system breaks down, the flue gas bypass pipeline 2 can be opened temporarily to facilitate the maintenance of the interior of the desulfurization system.
Example 3
Referring to fig. 3, the structure of the multi-point powder injection desulfurization system based on the SDA method of the present embodiment is substantially the same as that of embodiment 2, and further: the powder spraying mechanisms 7 arranged on the inner side wall of the desulfurizing tower 6 are divided into a plurality of layers from top to bottom, each layer comprises a plurality of powder spraying mechanisms 7 which are positioned at the same height and are circumferentially distributed on the inner side wall of the desulfurizing tower 6, the central axis of a spraying pipe of each powder spraying mechanism 7 arranged on the inner side wall of the desulfurizing tower 6 passes through the center of the cross section of the desulfurizing tower 6 at the height of the powder spraying mechanism 7, the included angle between the central axis of an elbow of each powder spraying mechanism 7 arranged on the inner side wall of the desulfurizing tower 6 and the central axis of the corresponding spraying pipe is the same, the arrangement ensures that the airflow direction of the desulfurized ash sprayed by each powder spraying mechanism 7 on each layer sequentially changes along the clockwise direction or the anticlockwise direction, thereby ensuring that all the airflow of the desulfurized ash sprayed by each layer is combined into the rotational flow situation, forming a large number of rotational flow areas in the desulfurizing tower 6, the reaction between the desulfurizer and the flue gas is more sufficient, and the desulfurization is more efficient; optimally, included angles of central axes of elbows of any two adjacent powder spraying mechanisms 7 on each layer arranged on the inner side wall of the desulfurizing tower 6 are theta, and the arrangement ensures that a figure defined by the central axes of the elbows of each powder spraying mechanism 7 on each layer is just a regular polygon corresponding to the quantity of the powder spraying mechanisms 7 on the layer, thereby being beneficial to the effective formation of rotational flow in the desulfurizing tower 6; in this embodiment, each layer includes four mechanisms 7 that spray powder that are located same height and distribute along circumference on 6 inside walls of desulfurizing tower, and install on 6 inside walls of desulfurizing tower on every layer arbitrary adjacent two mechanisms 7 that spray powder's elbow axis contained angle be 90, above setting, usable "four corners tangential circle" principle converges the biggest cyclone that forms through the mechanism 7 spun desulfurization ash air current of spraying powder on every layer, this cyclone is flowing pasting 6 inside walls of desulfurizing tower, air current disturbance in 6 to the desulfurizing tower is the biggest, make desulfurizer and flue gas reaction more abundant.
Example 4
Referring to fig. 4, the structure of the multi-point powder injection desulfurization system based on the SDA method of the present embodiment is substantially the same as that of embodiment 3, and further: and an atomized water nozzle 16 is arranged between two adjacent powder spraying mechanisms 7 on each layer.
In the upper area of the desulfurizing tower 6, the slurry sprayed by the rotary atomizer 5 is mixed with the dry ash to provide a certain humid environment for the dry ash, and in the middle and lower areas of the desulfurizing tower 6, because the moisture in the slurry is dried, an atomized water nozzle 16 is arranged between two adjacent powder spraying mechanisms 7 to moisten the dry ash, so that the activity of the dry ash is increased, and the reaction efficiency can be enhanced.
Referring to fig. 5-a1, 5-a2, 5-b1 and 5-b2, for the multi-point powder injection desulfurization system based on the SDA method proposed in this embodiment, comparative calculations are performed on the SO2 concentration distribution and the desulfurization efficiency in the existing desulfurization tower and the desulfurization tower after the multi-point powder injection desulfurization system based on the SDA method of this embodiment is adopted through simulation numerical simulation, which provides a theoretical basis for the contents of the present invention. As shown in fig. 5-a1 and 5-a2, when the multi-point powder injection desulfurization system based on the SDA method of the present embodiment is not used, the region with higher SO2 concentration in the desulfurization tower is mainly distributed in the upper part of the tower, i.e., the region near the atomizer, at the top of the tower, and at the position of the flue gas duct from the top of the tower to the bottom of the tower, and the desulfurization efficiency in the desulfurization tower is 85%; as shown in fig. 5-b1 and 5-b2, after the multi-point powder injection desulfurization system based on the SDA method of the present embodiment is adopted, the mixing area in the desulfurization tower is optimized, the concentration of SO2 in each area in the desulfurization tower is significantly reduced, the desulfurization efficiency is increased from 85% to 90%, and the desulfurization efficiency is significantly increased.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (7)
1. A multi-point powder injection desulfurization system based on an SDA method is characterized by comprising:
the top of the desulfurizing tower (6) is communicated with a flue gas distributor (3), and the flue gas distributor (3) is communicated with a gas outlet of the electric dust collector (1) through a pipeline;
the rotary atomizer (5), the rotary atomizer (5) is positioned at the top of the desulfurizing tower (6), the outlet of the rotary atomizer (5) is positioned at the top end of the inside of the desulfurizing tower (6), and the inlet of the rotary atomizer (5) is communicated with the outlet of the top tank (10) above; the inlet of the top tank (10) is communicated with a slaked lime slurry tank (11) through a pipeline; an inner flue (4) is connected to the inner side wall of the desulfurizing tower (6), an inlet of the inner flue (4) is communicated with an air outlet of the electric dust collector (1) through a pipeline, and an outlet of the inner flue (4) is over against an outlet of the rotary atomizer (5) above;
the flue gas outlet pipe (15), the flue gas outlet pipe (15) is communicated with the lower part of the desulfurizing tower (6), the flue gas outlet pipe (15) is communicated with the air inlet of the bag type dust collector (8) through a pipeline, the air outlet of the bag type dust collector (8) is communicated with the chimney (13) through a pipeline, and the ash discharge port of the bag type dust collector (8) is communicated with the desulfurizing ash bin (9) through a pipeline;
the inlet of the desulfurization ash conveying tank (14) is communicated with the desulfurization ash bin (9) through a pipeline, the outlet of the desulfurization ash conveying tank (14) is communicated with the feed inlet of a Venturi powder pump (12), the air inlet of the Venturi powder pump (12) is communicated with the air outlet of the electric dust remover (1), and the air outlet of the Venturi powder pump (12) is respectively communicated with the powder spraying mechanisms (7); install powder spraying mechanism (7) in flue gas distributor (3), powder spraying mechanism (7) are installed on the inside top of desulfurizing tower (6), install powder spraying mechanism (7) on desulfurizing tower (6) inside wall, install powder spraying mechanism (7) in inside flue (4), install powder spraying mechanism (7) in flue gas outlet pipe (15).
2. The SDA method-based multipoint powder injection desulfurization system according to claim 1, characterized in that: the electric dust remover (1) is communicated with a chimney (13) through a flue gas bypass pipeline (2).
3. The SDA method-based multipoint powder injection desulfurization system according to claim 1, characterized in that: the powder spraying mechanism (7) arranged on the inner side wall of the desulfurizing tower (6) is divided into a plurality of layers from top to bottom, and each layer comprises a plurality of powder spraying mechanisms (7) which are positioned at the same height and circumferentially distributed on the inner side wall of the desulfurizing tower (6).
4. The SDA method-based multi-point powder injection desulfurization system according to claim 3, characterized in that: the powder spraying mechanism (7) comprises a spraying pipe and an elbow arranged at the end part of the spraying pipe, the central axis of the spraying pipe of each powder spraying mechanism (7) arranged on the inner side wall of the desulfurizing tower (6) passes through the center of the cross section of the desulfurizing tower (6) at the height of the powder spraying mechanism (7), and the included angle of the central axis of the elbow of each powder spraying mechanism (7) arranged on the inner side wall of the desulfurizing tower (6) is the same as the included angle of the central axis of the corresponding spraying pipe.
5. The SDA method-based multi-point powder injection desulfurization system according to claim 4, characterized in that: the included angles of the central axes of the elbows of any two adjacent powder spraying mechanisms (7) arranged on each layer on the inner side wall of the desulfurizing tower (6) are theta.
6. The SDA method-based multi-point powder injection desulfurization system according to claim 5, characterized in that: the included angles of the central axes of the elbows of any two adjacent powder spraying mechanisms (7) arranged on each layer on the inner side wall of the desulfurizing tower (6) are both 90 degrees.
7. The SDA method-based multi-point powder injection desulfurization system according to claim 6, characterized in that: and an atomized water nozzle (16) is arranged between every two adjacent powder spraying mechanisms (7) on each layer on the inner side wall of the desulfurizing tower (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182426.6A CN109806757A (en) | 2019-03-07 | 2019-03-07 | Multiple spot powder injection desulphurization system based on SDA method |
| CN2019101824266 | 2019-03-07 |
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| CN211936362U true CN211936362U (en) | 2020-11-17 |
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| CN201910182426.6A Withdrawn CN109806757A (en) | 2019-03-07 | 2019-03-07 | Multiple spot powder injection desulphurization system based on SDA method |
| CN201911328516.8A Pending CN110898657A (en) | 2019-03-07 | 2019-12-20 | Multi-point powder spraying desulfurization system based on SDA method |
| CN201922314206.2U Active CN211936362U (en) | 2019-03-07 | 2019-12-20 | Multi-point powder spraying desulfurization system based on SDA method |
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| CN201910182426.6A Withdrawn CN109806757A (en) | 2019-03-07 | 2019-03-07 | Multiple spot powder injection desulphurization system based on SDA method |
| CN201911328516.8A Pending CN110898657A (en) | 2019-03-07 | 2019-12-20 | Multi-point powder spraying desulfurization system based on SDA method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110898657A (en) * | 2019-03-07 | 2020-03-24 | 安徽欣创节能环保科技股份有限公司 | Multi-point powder spraying desulfurization system based on SDA method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327768A (en) * | 2019-07-29 | 2019-10-15 | 贵阳铝镁设计研究院有限公司 | Semi-dry process flue gas desulphurization dust collecting process and its device |
| CN113304585A (en) * | 2021-05-22 | 2021-08-27 | 北京铝能清新环境技术有限公司 | Semi-dry desulfurization system suitable for low-sulfur flue gas |
| CN115006971A (en) * | 2022-06-10 | 2022-09-06 | 安徽欣创节能环保科技股份有限公司 | Be applied to desulfurizing tower of multiple spot desulfurization system of dusting |
| CN117679945A (en) * | 2023-12-15 | 2024-03-12 | 南京诺禾机械制造有限公司 | Circulating fluidized bed flue gas desulfurization device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102380308A (en) * | 2010-09-03 | 2012-03-21 | 鞍钢集团工程技术有限公司 | Sintering flue gas desulfurization and purification method and equipment |
| US9429274B2 (en) * | 2010-12-22 | 2016-08-30 | Alstom Technology Ltd | Slurry control system |
| CN105582779A (en) * | 2016-01-20 | 2016-05-18 | 江苏宏联环保科技有限公司 | Exhaust gas purification tower adopting rotational flow type spraying |
| CN106422706A (en) * | 2016-11-28 | 2017-02-22 | 秦皇岛玻璃工业研究设计院 | Atomizing nozzle, desulfurization system and desulfurization method of glass melting furnace flue gas |
| CN206566758U (en) * | 2017-03-07 | 2017-10-20 | 安徽欣创节能环保科技股份有限公司 | A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device |
| CN207928910U (en) * | 2017-12-29 | 2018-10-02 | 无锡市华星东方电力环保科技有限公司 | A kind of downflow type semi-dry process flue gas desulphurization dust-extraction unit |
| CN109806757A (en) * | 2019-03-07 | 2019-05-28 | 安徽工业大学 | Multiple spot powder injection desulphurization system based on SDA method |
-
2019
- 2019-03-07 CN CN201910182426.6A patent/CN109806757A/en not_active Withdrawn
- 2019-12-20 CN CN201911328516.8A patent/CN110898657A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898657A (en) * | 2019-03-07 | 2020-03-24 | 安徽欣创节能环保科技股份有限公司 | Multi-point powder spraying desulfurization system based on SDA method |
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| CN110898657A (en) | 2020-03-24 |
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