Spray type desulfurized flue gas emission device

Abstract

A spray type desulfurized flue gas emission device comprises a rack and an adsorption tank, the adsorption tank is installed on the rack, a filter screen, a reaction screen and a gas injection screen are sequentially installed in the adsorption tank from top to bottom, the interior of the adsorption tank is divided into an exhaust cavity, a reaction cavity and a gas injection cavity through the filter screen and the reaction screen, an atomizing nozzle is further installed on the filter screen, and the gas injection cavity is communicated with the reaction cavity. An inlet of the atomizing nozzle is communicated with one end of the atomizing pipe, the other end of the atomizing pipe is communicated with an outlet of the metering pump, and an inlet of the metering pump is communicated with adsorption liquid; an atomizing nozzle is further mounted on the filter screen, an inlet of the atomizing nozzle is communicated with one end of an atomizing pipe, the other end of the atomizing pipe is communicated with an outlet of a metering pump, and an inlet of the metering pump is communicated with adsorption liquid; an atomizing nozzle is further mounted on the filter screen, an inlet of the atomizing nozzle is communicated with one end of an atomizing pipe, the other end of the atomizing pipe is communicated with an outlet of a metering pump, and an inlet of the metering pump is communicated with adsorption liquid.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of, in particular to a kind of spray type desulfurization flue gas discharge device. BACKGROUND

[0002] Spray drying desulfurization method is to use the power of mechanical or airflow to disperse absorbent into extremely small mist liquid drops, mist liquid drops form relatively large contact surface with flue gas, and a kind of heat exchange, mass transfer and chemical reaction between gas-liquid two phases occurs.The commonly used absorbent is lye, lime milk, limestone slurry etc., and most of the devices currently use lime milk as absorbent.Generally, the desulfurization rate of this method is 65%~85%.The desulfurization is carried out in gas, liquid and solid three-phase state, the process equipment is simple, the product is dry CaSO3, CaSO4, easy to handle, without serious equipment corrosion and plugging, and the water consumption is also less.But the automation requirement is relatively high, the dosage of absorbent is difficult to control, and the absorption efficiency is not very high.

[0003] Therefore, how to realize accurate control of absorbent dosage and improve absorption efficiency is the problem to be solved at present. SUMMARY

[0004] In view of the above defects of the prior art, the technical problem to be solved by the utility model is to provide a spray type desulfurization flue gas discharge device, which can adjust the dosage of absorbent in real time according to the gas condition, so as to realize accurate control.

[0005] To achieve the above purpose, the utility model provides a spray type desulfurization flue gas discharge device, which comprises a rack and an adsorption tank, the adsorption tank is installed on the rack, and a filter screen, a reaction screen and a jet screen are installed in the adsorption tank from top to bottom,

[0006] A atomizing nozzle is further installed on the filter screen, the inlet of the atomizing nozzle is communicated with one end of an atomizing pipe, the other end of the atomizing pipe is communicated with the outlet of a metering pump, and the inlet of the metering pump is communicated with an adsorption liquid;

[0007] The jet screen is sleeved and fixed outside a cleaning pipe, the inside of the cleaning pipe is a hollow cleaning pipe cavity, the cleaning pipe cavity is communicated with the jet screen for gas guiding, the cleaning pipe cavity is further communicated with one end of an air inlet pipe, and the cleaning pipe cavity is directly or indirectly installed on the adsorption tank; the other end of the air inlet pipe is communicated with the outlet of a gas flow meter, the inlet of the gas flow meter is communicated with the outlet of an air extractor, and the inlet of the air extractor is communicated with waste gas needing to be adsorbed.

[0008] As a further improvement of the utility model, the filter screen, the reaction screen and the jet screen are all in the shape of a dome with high middle and low periphery.

[0009] As a further improvement of the utility model, a plurality of filter screen holes and reaction screen holes are arranged on the filter screen and the reaction screen respectively, and the filter screen holes and the reaction screen holes are used for allowing the fluid to pass through.

[0010] As a further improvement of the utility model, the air injection net comprises an outer net and an inner net, and an air injection gap is arranged between the outer net and the inner net, wherein the outer net and the inner net are respectively provided with through holes; the inner net is sleeved and fixed on the cleaning pipe.

[0011] As a further improvement of the utility model, a through groove is arranged at the position corresponding to the reaction net on the adsorption tank, a current collection shell is arranged on the outer side of the adsorption tank and corresponds to the through groove, the inner side of the current collection shell is a hollow current collection cavity, and the current collection cavity is communicated with one end of the current collection pipe.

[0012] As a further improvement of the utility model, one end of the exhaust cavity is communicated with the exhaust pipe, and the other end of the exhaust pipe is led out of the adsorption tank and is arranged on the adsorption tank.

[0013] As a further improvement of the utility model, one end of the cleaning pipe is led out of the discharging part and is assembled with the motor shaft, the motor shaft is arranged in the motor, and the motor is arranged on the rack.

[0014] As a further improvement of the utility model, a discharging part is arranged at the bottom of the adsorption tank, a discharging inclined plate and a gas supply shaft sleeve are fixedly arranged in the discharging part, a through discharging groove is arranged at the position corresponding to the lowest end of the discharging inclined plate, and the sundries falling on the discharging inclined plate are guided into the discharging groove through the discharging inclined plate and are discharged.

[0015] The cleaning pipe is communicated with the gas supply shaft sleeve and can rotate and seal relative to the gas supply shaft sleeve, a first ring groove and a first through hole are arranged at the position corresponding to the gas supply shaft sleeve, the first through hole is communicated with the first ring groove and the cleaning pipe cavity, the first ring groove is communicated with the air inlet pipe, and the air inlet pipe is arranged on the gas supply shaft sleeve.

[0016] As a further improvement of the utility model, a second ring groove and a second through hole are arranged at the position corresponding to the assembly of the cleaning pipe and the inner net, and the second through hole is communicated with the second ring groove and the cleaning pipe cavity.

[0017] As a further improvement of the utility model, the outer wall of the outer net is tightly attached to the first scraper, the outer wall of the reaction net is tightly attached to the second scraper, and the inner wall of the filter screen is tightly attached to the third scraper, the third scraper is connected and assembled with the second scraper through a scraper frame, and the second scraper and the first scraper are fixedly arranged on the cleaning pipe.

[0018] The reaction net and the filter screen are fixedly arranged on the adsorption tank, and the cleaning pipe is communicated with the reaction net and the filter screen.

[0019] The utility model discloses the beneficial effect is:

[0020] The utility model discloses adopt the metering pump, gas flowmeter respectively detect liquid absorbent, need adsorb the flow of waste gas, and the program of built -in is according to the flow that the gas flowmeter detects the flow calculation needed liquid absorbent, then through the metering pump ration supply.This mode can realize the real -time adjustment absorbent dosage according to the gas situation, with the accurate control is realized, reduces the dosage of absorbent under the premise of ensuring the desulfurization effect.In addition the utility model discloses atomize into water mist after liquid absorbent and waste gas contact, plus the even wind of reaction net, the rotation paint spraying of paint spraying net can effectively increase the contact time of water mist and waste gas, thereby improve the desulfurization effect, improve the utilization rate of adsorbent and desulfurization efficiency.In addition the utility model discloses still design first scraper, second scraper, third scraper respectively to the air -blown net, reaction net, filter screen scrape wash to prevent the blockage, scale, thereby greatly reduce the maintenance frequency, reduce the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structural schematic diagram of the utility model;

[0022] Figure 2 It is the section view of the utility model at the center surface where the cleaning pipe 410 axis is;

[0023] Figure 3 It is the section view of the utility model at the other center surface where the cleaning pipe 410 axis is;

[0024] Figures 4-5 It is the structural schematic diagram of the utility model after removing rack 100;

[0025] Figures 6-8 It is the partial structural schematic diagram of the utility model after removing rack 100, adsorption tank 310;

[0026] Figure 9 It is the absorbent dosage control system schematic diagram of the utility model. DETAILED DESCRIPTION

[0027] The technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment.

[0028] See Figures 1-9The spray type desulfurization flue gas emission device of the embodiment comprises a rack 100, an adsorption tank 310, the adsorption tank 310 is installed on the rack 100, a discharge part 330 is installed at the bottom of the adsorption tank 310, a filter screen 630, a reaction screen 620 and a jet screen 610 are installed in the adsorption tank 310 from top to bottom, the filter screen 630 and the reaction screen 620 divide the inside of the adsorption tank 310 into an exhaust cavity 311, a reaction cavity 312 and a jet cavity 313 respectively, a side through groove 314 is arranged at the corresponding position of the adsorption tank 310 and the reaction screen 620, a confluence shell 320 is installed at the corresponding position of the side through groove 314 outside the adsorption tank 310, the inside of the confluence shell 320 is a hollow confluence cavity 321, and the confluence cavity 321 is communicated with one end of a confluence pipe 530. When in use, the sundries on the reaction screen 620 can enter the confluence cavity 321 through the side through groove 314 and then be discharged from the confluence pipe 530 to avoid blocking the reaction screen 620. A plurality of filter screen holes 631 and reaction screen holes 621 are arranged on the filter screen 630 and the reaction screen 620 respectively, and the filter screen holes 631 and the reaction screen holes 621 are used for allowing fluid to pass through.

[0029] The exhaust cavity 311 is communicated with one end of an exhaust pipe 520, the other end of the exhaust pipe 520 is led out of the adsorption tank 310 and the exhaust pipe 520 is installed on the adsorption tank 310. When in use, the adsorbed gas flow is discharged from the exhaust pipe 520 after passing through the filter screen 630.

[0030] The filter screen 630 is further provided with an atomizing nozzle 220, the inlet of the atomizing nozzle 220 is communicated with one end of an atomizing pipe 510, the other end of the atomizing pipe is communicated with the outlet of a metering pump, the inlet of the metering pump is communicated with an adsorption liquid. When in use, the metering pump quantitatively pumps the adsorption liquid to the atomizing nozzle 220, the adsorption liquid is atomized into water mist after passing through the atomizing nozzle 220 and then falls to the reaction screen 620, and the gas flow to be adsorbed is fully contacted with the water mist and reacts after passing through the reaction screen 620 to adsorb sulfur such as sulfur dioxide in the gas flow. Part of the gas flow to be desulfurized is contacted with the water mist at the reaction screen 620, and the water mist is condensed into a film at the reaction screen hole 621 to further increase the contact area and the contact time, thereby improving the adsorption efficiency. The adsorbed gas flow is filtered through the filter screen hole 631 and then enters the exhaust cavity 311, and then is output through the exhaust pipe. The solid and the water flow which are reacted and crystallized on the reaction screen 620 either fall through the reaction screen hole 621 or enter the confluence cavity 321 through the side through groove 314 and are discharged.

[0031] The jet screen 610 comprises an outer screen 611 and an inner screen 612, and a jet gap 613 is arranged between the outer screen 611 and the inner screen 612, and a plurality of outer screen holes 6111 and inner screen holes 6121 are arranged on the outer screen 611 and the inner screen 612 respectively.

[0032] The inner net 612 is fixed on the cleaning pipe 410, the inside of the cleaning pipe 410 is a hollow cleaning pipe cavity 411, the cleaning pipe cavity 411 is communicated with one end of the air inlet pipe 540, the other end of the air inlet pipe 540 is communicated with the outlet of the gas flow meter, the inlet of the gas flow meter is communicated with the outlet of the air pump, and the inlet of the air pump is communicated with the waste gas needing to be adsorbed. In use, the air pump is started to pump the waste gas to the gas flow meter, the gas flow meter measures the gas flow, the waste gas enters the air inlet pipe and then enters the inner net 612 through the cleaning pipe cavity 411, then enters the air injection gap 613 through the inner net hole 6121, and finally is sprayed out from the outer net hole 6111. In this way, the outer net hole 6111 is evenly blown, so that the gas flow can enter the air injection cavity 313 uniformly, then the waste gas rises to the reaction net, finally contacts the water mist at the reaction net 620 in the reaction cavity 312 and is adsorbed, and finally the gas flow is discharged after passing through the filter screen 630. The signals of the gas flow meter and the metering pump are connected to the industrial computer, the industrial computer calculates the required adsorption liquid according to the preset proportion and the detected gas flow, so as to control the metering pump to supply the corresponding flow or volume of adsorption liquid to the atomizing nozzle 220. This effectively solves the technical problem of accurately controlling the amount of absorbent according to the gas flow. The adsorption liquid can be calcium hydroxide solution.

[0033] One end of the cleaning pipe 410 penetrates out of the discharge part 330 and is assembled with the motor shaft 211, the motor shaft 211 is arranged in the motor 210, and the motor 210 is installed on the rack 100. The motor 210 can drive the cleaning pipe 410 to rotate, so as to drive the air injection net 610 to rotate, which makes the sprayed waste gas rotate upward, increases the contact time with the water mist, and at the same time, the dirt on the surface of the air injection net 610 is thrown into the air injection cavity 313 by centrifugal force.

[0034] Preferably, the second ring groove 415 and the second through hole 414 are arranged at the assembly position of the cleaning pipe 410 and the inner net 612, the second through hole 414 communicates the second ring groove 415 with the cleaning pipe cavity 411, so that the waste gas in the cleaning pipe cavity 411 enters the second ring groove 415 through the second through hole 414, and then enters the inner net 612.

[0035] Preferably, the discharge inclined plate 332 and the air supply shaft sleeve 420 are fixedly arranged in the inside of the discharge part 330, the discharge part 330 is provided with a through discharge groove 331 corresponding to the lowest end of the discharge inclined plate 332, and the dirt falling on the discharge inclined plate 332 is guided to enter the discharge groove 331 and is discharged.

[0036] The cleaning pipe 410 passes through the air supply shaft sleeve 420 and is in sealed assembly with the air supply shaft sleeve 420 in relative circumferential rotation, the cleaning pipe 410 is provided with a first ring groove 413 and a first through hole 412 at the corresponding position of the air supply shaft sleeve 420, the first through hole 412 communicates the first ring groove 413 with the cleaning pipe cavity 411, the first ring groove 413 communicates with the air inlet pipe 540 which is installed on the air supply shaft sleeve 420. The exhaust gas delivered by the air inlet pipe 540 enters the cleaning pipe cavity 411 for delivery after passing through the first ring groove 413 and the first through hole 412. This design does not affect the delivery of the gas flow when the cleaning pipe 410 rotates.

[0037] The outer wall of the outer net 611 is tightly attached to the first scraper 710, the outer wall of the reaction net 620 is tightly attached to the second scraper 720, and the inner wall of the filter net 630 is tightly attached to the third scraper 730, the third scraper 730 is connected and assembled with the second scraper 720 through the scraper frame 740, and the second scraper 720 and the first scraper 710 are both installed and fixed on the cleaning pipe 410. When the cleaning pipe 410 rotates, the first scraper 710, the second scraper 720 and the third scraper 730 can be driven to rotate, so as to respectively clean the outer net 611, the reaction net 620 and the filter net 630. This design is mainly to prevent blockage.

[0038] The reaction net 620 and the filter net 630 are both installed and fixed on the adsorption tank 310, and the cleaning pipe 410 passes through the reaction net 620 and the filter net 630 and is in relative circumferential rotation and non-axial movement assembly with the reaction net 620 and the filter net 630.

[0039] Preferably, the filter net 630, the reaction net 620 and the air injection net 610 are all in the shape of a dome with a high middle and low periphery. This design is mainly to reduce the probability of foreign matter adsorption.

[0040] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled person in the field to which the present application belongs.

[0041] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0043] In the present application, the circumferentially rotatable assembly is a connecting assembly that can rotate relative to each other, such as through a bearing assembly; the circumferentially rotatable and axially immovable assembly is an assembly that can rotate relative to each other, but cannot move axially, such as installing shaft clamps on both sides of the shaft and the mounting device to prevent the shaft from moving axially; the circumferentially rotatable and axially movable assembly is a movable assembly, such as a shaft assembly through a shaft hole; the circumferentially immovable and axially movable assembly can be a spline groove and spline assembly.

[0044] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0046] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A spray type desulfurized flue gas emission device, characterized by: The utility model provides a kind of adsorption device, including rack, adsorption tank, the adsorption tank is installed on rack, the inside of adsorption tank is installed filter screen, reaction net, jet net in turn from top to bottom, the inside of adsorption tank is divided into exhaust cavity, reaction cavity, jet cavity by filter screen, reaction net respectively, The filter screen is also provided with an atomizing nozzle, the inlet of the atomizing nozzle is communicated with one end of the atomizing pipe, the other end of the atomizing pipe is communicated with the outlet of the metering pump, and the inlet of the metering pump is communicated with the adsorption liquid. The jet net is sleeved and fixed outside the cleaning pipe, the inside of the cleaning pipe is a hollow cleaning pipe cavity, the cleaning pipe cavity is communicated with the jet net for air conduction, the cleaning pipe cavity is also communicated with one end of the air inlet pipe, and the cleaning pipe cavity is directly or indirectly installed on the adsorption tank.

2. The spray desulfurization flue gas emission device according to claim 1, characterized in that: The other end of the air inlet pipe is communicated with the outlet of the gas flow meter, the inlet of the gas flow meter is communicated with the outlet of the air extractor, and the inlet of the air extractor is communicated with the exhaust gas to be adsorbed.

3. The spray desulfurization flue gas emission device according to claim 1 or 2, characterized in that: The filter screen, the reaction net and the jet net are all in the shape of a dome with a high middle and low periphery.

4. The spray desulfurization flue gas emission device according to claim 1 or 2, characterized in that: The filter screen and the reaction net are respectively provided with a plurality of penetrating filter screen holes and reaction net holes for allowing fluid to pass through.

5. The spray desulfurization flue gas emission device according to claim 1, characterized in that: The jet net includes an outer net and an inner net, and the outer net and the inner net are provided with penetrating outer net holes and inner net holes respectively.

6. The spray desulfurization flue gas emission device according to claim 1, characterized in that: The adsorption tank is provided with a penetrating side through groove corresponding to the reaction net, and a flow collecting shell is installed outside the adsorption tank corresponding to the side through groove.

7. The spray type desulfurization flue gas emission apparatus according to claim 4, wherein: The exhaust cavity is communicated with one end of the exhaust pipe, and the other end of the exhaust pipe is led out of the adsorption tank and installed on the adsorption tank.

8. The spray desulfurization flue gas emission device according to claim 1, characterized in that: One end of the cleaning pipe is assembled with a motor shaft after penetrating out of the discharging part, the motor shaft is installed in a motor, and the motor is installed on the rack. A discharging part is installed at the bottom of the adsorption tank, and a discharging inclined plate and a gas supply shaft sleeve are fixedly installed inside the discharging part.

9. The spray type desulfurization flue gas emission apparatus according to claim 4, wherein: The cleaning pipe penetrates through the gas supply shaft sleeve and is relatively circumferentially rotatable, sealingly assembled with the gas supply shaft sleeve, and provided with a first ring groove and a first through hole corresponding to the gas supply shaft sleeve.

10. The spray desulfurization flue gas emission device according to claim 7, characterized in that: The cleaning pipe and the inner net are assembled with a second ring groove and a second through hole, and the second through hole communicates the second ring groove with the cleaning pipe cavity. The outer wall of the outer net is tightly attached to a first scraper, the outer wall of the reaction net is tightly attached to a second scraper, and the inner wall of the filter screen is tightly attached to a third scraper. The reaction net and the filter screen are fixedly installed on the adsorption tank, and the cleaning pipe penetrates through the reaction net and the filter screen respectively.

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