CN210079244U - Microwave drying spray desulfurization device - Google Patents
Microwave drying spray desulfurization device Download PDFInfo
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- CN210079244U CN210079244U CN201920645668.XU CN201920645668U CN210079244U CN 210079244 U CN210079244 U CN 210079244U CN 201920645668 U CN201920645668 U CN 201920645668U CN 210079244 U CN210079244 U CN 210079244U
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Abstract
The utility model discloses a microwave drying spray desulfurization device, including the spray tower, set up the flue gas intake pipe in spray tower one side, set up at spray tower lower extreme and the communicating ash bucket of spray tower to and set up the outlet duct on the ash bucket lateral wall. The upper end of the spraying tower is provided with an alkali liquor storage tank, the alkali liquor storage tank is connected with a spray pipe, and the other end of the spray pipe penetrates through the inner wall of the spraying tower and is fixedly connected to the top end of the inner part of the spraying tower. The microwave source is fixedly arranged on the outer side wall of the spraying tower, and the waveguide window is arranged at the joint of the microwave source and the spraying tower. The utility model discloses utilize microwave rapid draing desulfurization result, improved the utilization ratio of absorbent, reduce the desulfurization and give birth to admittedly useless output, have desulfurization efficiency height, easy operation and working costs low grade advantage, be suitable for the industrialization and popularize and apply.
Description
Technical Field
The utility model relates to a waste gas treatment equipment field especially relates to a microwave drying spray desulfurization device.
Background
At present, the pollution of sulfur dioxide and acid rain in China is serious, and the control and reduction of the emission of the sulfur dioxide are matters which are not slow at all. But the pollution situation of sulfur dioxide in China is still severe due to various reasons such as economy, technology and the like. On one hand, sulfur dioxide has great industrial demand as an important chemical raw material for producing a series of chemical fertilizers such as sulfuric acid and the like, and on the other hand, sulfur dioxide is discharged into the atmosphere along with white tail gas to pollute the environment, thereby causing economic loss of more than 1100 million yuan each year. Therefore, the search for an economic, efficient and feasible flue gas desulfurization method for controlling and reducing the emission of sulfur dioxide becomes the most urgent task in the field of atmospheric pollution control in China at present.
The widely used commercial desulfurization technology in the world is the calcium method, and the proportion of the calcium method is more than 90 percent. The desulfurization techniques can be further classified into wet, dry and semi-dry (semi-wet) methods according to the dry and wet states of the absorbent and the desulfurization product during desulfurization. The existing wet flue gas desulfurization process is generally to spray water to cool flue gas, so that the temperature of the flue gas entering a tower is reduced to a temperature which can be endured by a tower body anticorrosive material for a long time. At present, boiler flue gas in China is basically built with flue gas desulfurization facilities, more than 90% of boilers are subjected to wet desulfurization, and particularly, small and medium-sized industrial boilers are subjected to simple wet processes by using alkalis such as lime/limestone, sodium alkali and alkaline wastewater as desulfurizing agents. The method has the advantages of high desulfurization reaction speed, simple equipment, high desulfurization efficiency and the like, but the problems of serious corrosion, high operation and maintenance cost, easy secondary pollution and the like generally exist.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a microwave drying spray desulphurization unit can improve the utilization ratio of absorbent, and reduces the desulfurization and gives up the output admittedly, and desulfurization is efficient, easy operation and working costs are low.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a microwave drying spray desulphurization unit, includes the spray tower, sets up the flue gas intake pipe of spray tower one side sets up the spray tower lower extreme with communicating ash bucket of spray tower, and set up outlet duct on the ash bucket lateral wall, the upper end of spray tower is provided with the alkali lye reservoir, be connected with the spray tube on the alkali lye reservoir, the other end of spray tube passes the inner wall fixed connection of spray tower is in the inside top of spray tower. And a microwave source is fixedly arranged on the outer side wall of the spraying tower, and a waveguide window is arranged at the joint of the microwave source and the spraying tower.
By adopting the technical scheme, the alkali liquor storage tank and the microwave source are arranged outside the spraying tower, so that the waste gas entering the spraying tower and the alkali liquor flowing into the spraying tower can react with each other, and the aim of desulfurization is fulfilled. In addition, the heat effect of the microwave source can not only accelerate the chemical reaction rate, but also rapidly dry the desulfurization product, discharge the dried solid waste into the ash bucket, and also improve the temperature of the waste gas, thereby ensuring the required heat for the high-altitude discharge of the subsequently purified gas. The scheme further improves the utilization rate of the absorbent, reduces the generation amount of desulfurization solid waste, and has higher desulfurization efficiency.
As a further aspect of the present invention: and a plurality of spray heads are connected to the pipe section of the spray pipe positioned in the spray tower.
By adopting the technical scheme, the contact area of the alkali liquor and the waste gas is further increased by connecting the plurality of spray heads on the spray pipe, and the desulfurization reaction is accelerated.
As a further aspect of the present invention: and an ultrasonic ash removal device is fixedly mounted on the outer side wall of the spraying tower.
Adopt above-mentioned technical scheme, set up ultrasonic wave ash removal device through the lateral wall at the spray tower, can further increase the area of contact of the sulfur dioxide in alkali lye and the waste gas for reaction rate also can prevent that the solid waste product that the desulfurization reaction in-process produced from accumulating on the spray tower inner wall.
As a further aspect of the present invention: the ultrasonic ash removal device is arranged on the lower side of the microwave source.
By adopting the technical scheme, the ultrasonic ash removal device is arranged at the lower side of the microwave source, so that the microwave source accelerates the drying of the solid waste products generated by the desulfurization reaction, and the solid waste products are vibrated by the ultrasonic ash removal device in the descending process and finally fall into the ash hopper.
As a further aspect of the present invention: and one end of the air outlet pipe, which is far away from the ash bucket, is provided with a cyclone dust collector.
By adopting the technical scheme, the cyclone dust collector is arranged on the gas outlet pipe, so that fine particles in the gas are further removed from the gas discharged from the gas outlet pipe in the cyclone dust collector, and the purified gas is discharged.
As a further aspect of the present invention: and a flue gas inlet pipe on the spray tower is arranged above the microwave source.
By adopting the technical scheme, the flue gas inlet pipe is arranged above the microwave source, so that the waste gas entering from the flue gas inlet pipe can be quickly mixed with alkali liquor, and the reaction rate is accelerated and the desulfurization effect is better under the action of the microwave source in the descending process.
As a further aspect of the present invention: the material of the waveguide window is one of high-purity quartz, alumina ceramic or mica.
By adopting the technical scheme, the high-purity quartz, the alumina ceramic and the mica stone are high-temperature-resistant waveguide materials, so that on one hand, microwaves generated by a microwave source can penetrate through the side wall of the spray tower to enter the spray tower, on the other hand, the service time of equipment can be prolonged, and the production requirement of a high-temperature waste gas desulfurization process is met.
As a further aspect of the present invention: the flue gas inlet pipe is communicated with an inlet of the spray tower, the ash bucket is communicated with an outlet of the air outlet pipe, first metal nets are arranged in the outlets of the flue gas inlet pipe and the ash bucket, and the aperture of each first metal net is smaller than 5 mm.
By adopting the technical scheme, the first metal net is arranged in the inlet of the smoke inlet pipe communicated with the spraying tower and the outlet of the ash bucket communicated with the air outlet pipe, so that the microwave in the spraying tower and the ash bucket can be prevented from being leaked from the smoke inlet pipe and the air outlet pipe, and secondary pollution is caused.
As a further aspect of the present invention: and a second metal net is arranged between the lower part of the spray head and the upper part of the inlet of the flue gas inlet pipe in the spray tower.
By adopting the technical scheme, the second metal mesh is arranged between the lower part of the spray head and the upper part of the inlet of the flue gas inlet pipe in the spray tower, so that microwave leakage in the spray tower can be prevented, and the phenomenon of sparking is avoided.
As a further aspect of the present invention: the diameter of the mesh of the second metal net is 1-4 cm.
Adopt above-mentioned technical scheme, through the mesh diameter that sets up the second metal mesh, further ensure that the microwave can not reveal from the second metal mesh.
The utility model has the advantages that:
(1) the microwave source in the utility model can not only accelerate the chemical reaction speed, but also rapidly dry the desulfurization product, the ultrasonic deashing device can promote the surface contact reaction of the waste gas and the alkali liquor, and can also prevent the inner wall of the spraying tower from solidifying the desulfurization product;
(2) the utility model has high utilization rate of the alkali liquor absorbent, can greatly reduce the operation cost of desulfurization and reduce the generation amount of solid waste;
(3) the flue gas temperature after the desulfurization treatment of the device is high, and the high-altitude emission of the flue gas is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a microwave drying spray desulfurization device provided in an embodiment of the present invention;
in the figure: 1-a flue gas inlet pipe; 2-a spray tower; 3-a microwave source; 4-ultrasonic deashing device; 5-an alkali liquor storage tank; 6-spraying a pipe; 7-a spray head; 8-ash bucket; 9-cyclone dust collector; 10-air outlet pipe; 11-a first metal mesh; 12-a second metal mesh; 13-waveguide window.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left and right directions in the drawings are regarded as the upper, lower, left and right directions of the microwave drying spray desulfurization apparatus described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Referring to fig. 1, a microwave drying spray desulfurization device comprises a spray tower 2, and an ash bucket 8 arranged at the lower end of the spray tower 2 and communicated with the spray tower 2, wherein a flue gas inlet pipe 1 is arranged on the side wall of the spray tower 2, an air outlet pipe 10 is arranged on the side wall of the ash bucket 8, and the air outlet pipe 10 is preferably arranged on the side wall of the upper end of the ash bucket 8.
The upper end of the spraying tower 2 is provided with an alkali liquor storage tank 5, the alkali liquor in the alkali liquor storage tank 5 can be one of limestone slurry, lime water or soda solution, and limestone slurry with mass concentration of 20-40% is preferred in the embodiment. Be connected with spray tube 6 on the bottom lateral wall of alkali lye reservoir 5, the inner wall fixed connection that spray tube 6's the other end passed spray tower 2 is on spray tower 2's inside top for the area of contact of increase alkali lye and waste gas for going on of desulfurization reaction, the utility model discloses evenly be connected with a plurality of shower nozzles 7 on the pipeline section that lies in spray tower 2 inside on spray tube 6, a plurality of shower nozzles 7 can the highly uniform, also can highly inconsistent.
In addition, a microwave source 3 is fixedly arranged on the outer side wall of the spraying tower 2, and the microwave source 3 is arranged below the flue gas inlet pipe 1. The microwave source 3 comprises a power supply, a magnetron and a waveguide, wherein the magnetron is a water-cooling magnetron, the water-cooling magnetron has a better heat dissipation effect, the normal operation of the microwave magnetron can be ensured, and the service life of equipment is prolonged. The power of the microwave source 3 is 1-100kw, the frequency is 2.45GHz and 915 MHz. The waveguide window 13 is arranged at the joint of the microwave source 3 and the spray tower 2, and the waveguide window 13 is made of one of high-temperature-resistant high-purity quartz, alumina ceramic or mica stone so as to meet the requirement of a desulfurization process of high-temperature waste gas.
In order to prevent the microwave in the spray tower 2 from revealing, the utility model discloses the entry that accesss to the spray tower at the flue gas intake pipe, the ash bucket all is provided with the first metal mesh that aperture < 5mm in accesss to the export of outlet duct.
In addition, in order to prevent the microwave leakage and the ignition phenomenon, a second metal net with the mesh diameter of 1-4cm is arranged on the inner wall between the lower part of the spray head 7 and the upper part of the inlet of the flue gas inlet pipe 1 in the spray tower 2.
In order to prevent the accumulation of solid waste products generated in the desulfurization reaction process on the inner wall of the spray tower 2, an ultrasonic ash removal device 4 is fixedly installed on the outer side wall of the spray tower 2, the ultrasonic ash removal device 4 is the prior art, and the sound wave ash removal device with the model of SQ-75WG produced by Xin automatic instruments Limited in Liaoning is adopted in the embodiment. The ultrasonic ash cleaner 4 is arranged at the lower side of the microwave source 3, and solid waste products generated in the desulfurization reaction process fall into an ash bucket 8. On the other hand, the contact area of the alkali liquor and the sulfur dioxide in the waste gas can be further enlarged through the vibration effect of the ultrasonic wave, and the reaction rate is accelerated.
The utility model discloses still keep away from one of ash bucket 8 on outlet duct 10 and serve and be provided with cyclone 9, can make the outlet duct combustion gas further detach the tiny particulate matter in the gas in cyclone 9, the gas outgoing after the purification.
Use the utility model discloses during the desulfurization treatment of carrying out waste gas, the boiler flue gas is after dust removal and denitration treatment, get into spray tower 2 from flue gas intake pipe 1, the lime stone thick liquid in alkali lye reservoir 5 flows through shower nozzle 7 on spray tube 6 and forms oxysulfide contact reaction such as sulfur dioxide in droplet from top to bottom and the flue gas and generate calcium sulfite and calcium sulfate, the microwave radiation that microwave source 3 produced carries out the rapid draing back to desulfurization product and forms solid powder, solid powder can collect outward transportation in falling into the ash bucket 8 of 2 lower extremes of spray tower under the action of gravity, partly dust gets into cyclone 9 along with the gas after the desulfurization reaction, further detach the tiny particulate matter in the gas and obtain the gas after-purifying discharge in cyclone 9.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A microwave drying spray desulfurization device comprises a spray tower (2), a flue gas inlet pipe (1) arranged on one side of the spray tower (2), an ash bucket (8) arranged at the lower end of the spray tower (2) and communicated with the spray tower (2), and an air outlet pipe (10) arranged on the side wall of the ash bucket (8), and is characterized in that an alkali liquor storage tank (5) is arranged at the upper end of the spray tower (2), a spray pipe (6) is connected onto the alkali liquor storage tank (5), and the other end of the spray pipe (6) penetrates through the inner wall of the spray tower (2) and is fixedly connected to the top end of the interior of the spray tower (2);
the microwave source (3) is fixedly arranged on the outer side wall of the spraying tower (2), and a waveguide window (13) is arranged at the joint of the microwave source (3) and the spraying tower (2).
2. The microwave drying spray desulfurization device according to claim 1, characterized in that a plurality of spray heads (7) are connected to the pipe section of the spray pipe (6) located inside the spray tower (2).
3. The microwave drying spray desulfurization device according to claim 1, characterized in that the outer side wall of the spray tower (2) is fixedly provided with an ultrasonic ash removal device (4).
4. The microwave drying spray desulfurization device of claim 3, characterized in that the ultrasonic ash removal device (4) is disposed at the lower side of the microwave source (3).
5. The microwave drying spray desulfurization device of claim 1, characterized in that a cyclone (9) is disposed on the end of the outlet pipe (10) away from the ash bucket (8).
6. The microwave drying spray desulfurization device according to claim 1, characterized in that the flue gas inlet pipe (1) on the spray tower (2) is arranged above the microwave source (3).
7. The microwave drying spray desulfurization apparatus of claim 1, characterized in that: the material of the waveguide window (13) is one of high-purity quartz, alumina ceramic or mica.
8. The microwave drying spray desulfurization device according to claim 1, characterized in that the inlet of the flue gas inlet pipe (1) to the spray tower (2) and the outlet of the ash hopper (8) to the gas outlet pipe (10) are provided with a first metal mesh (11), and the aperture of the first metal mesh (11) is less than 5 mm.
9. The microwave drying spray desulfurization device according to claim 2, characterized in that a second metal mesh (12) is provided in the spray tower (2) between below the spray head (7) and above the inlet of the flue gas inlet pipe (1).
10. Microwave drying spray desulphurisation device according to claim 9, wherein the mesh diameter of the second metal mesh (12) is between 1 and 4 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645668.XU CN210079244U (en) | 2019-05-06 | 2019-05-06 | Microwave drying spray desulfurization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920645668.XU CN210079244U (en) | 2019-05-06 | 2019-05-06 | Microwave drying spray desulfurization device |
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| CN210079244U true CN210079244U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682385A (en) * | 2020-12-28 | 2022-07-01 | 陕西青朗万城环保科技有限公司 | Electromagnetic dust removal method and control system thereof |
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2019
- 2019-05-06 CN CN201920645668.XU patent/CN210079244U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682385A (en) * | 2020-12-28 | 2022-07-01 | 陕西青朗万城环保科技有限公司 | Electromagnetic dust removal method and control system thereof |
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