CN210522242U - Experimental device for reduce white plume emission after desulfurization - Google Patents
Experimental device for reduce white plume emission after desulfurization Download PDFInfo
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- CN210522242U CN210522242U CN201921440515.8U CN201921440515U CN210522242U CN 210522242 U CN210522242 U CN 210522242U CN 201921440515 U CN201921440515 U CN 201921440515U CN 210522242 U CN210522242 U CN 210522242U
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- desulfurization
- white smoke
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Abstract
The utility model discloses an experimental device for reduce white plume emission after desulfurization, including reaction unit, reaction unit's the upper portion left and right sides is equipped with the outlet duct respectively and has the feed inlet of upper cover, and the outlet duct other end is connected with CO2The recycling device is characterized in that the lower part of the reaction device is connected with an air inlet pipe, the other end of the air inlet pipe is connected with a white smoke plume collector, the lower part of the reaction device is also provided with a discharge outlet, the discharge outlet is connected with a solid-liquid separation device, the solid-liquid separation device is connected with a desulfurization device, a stirring device is arranged in the reaction device, and the air inlet pipe is also provided with a buffer cavity; theThe device can lead the white smoke plume in the buffer cavity to be led into the reaction device after reaching the proper temperature so as to improve CO2The activation efficiency of (3).
Description
Technical Field
The utility model relates to a chemistry experiment technical field particularly, relates to an experimental apparatus that white plume discharged after reducing the desulfurization.
Background
Currently, Flue Gas Desulfurization (FGD) is the most widely used desulfurization method in the world today, and is the SO control method2And acid rain hazard. At present, the flue gas desulfurization technology most applied in China is a wet limestone gypsum desulfurization method, and the technology is mature and can be used for removing the sulfurThe method has the advantages of high sulfur efficiency, high system reliability and high automation degree, but has the problems of high equipment investment, complex system, easy blockage, scaling, corrosion and leakage, large production amount of desulfurized product gypsum, low quality, generation of white smoke plume to cause haze pollution and the like, and the problems cause certain limitations in the aspects of economy, operation maintenance and environmental protection in wet desulphurization. In the presence of sulfur dioxide (SO)2) And nitrogen oxides (NOx) are gradually controlled, and haze and CO caused by white smoke plume2The greenhouse effect caused by the emission increasingly draws more attention of the environmental protection department, and becomes a problem which is urgently needed to be solved by coal-fired power plants in China.
Taking the example of guaranteeing the air quality in recent years, according to the data of the national environmental protection agency, although denitration and desulfurization are adopted after heating coal in winter, the air pollution is still serious in 2016 and the air pollution in the past in winter and is always serious; however, after the gas heating is changed in the winter of 2017, the air quality is greatly improved, and the highest air quality is light pollution. This indicates that although the SO is removed from the coal as it is fired2NOx, but the exhausted flue gas still pollutes the atmosphere, and the most intuitive embodiment is on the air quality. According to the data display of the economic cooperation development organization and the international energy agency, the coal-fired power plant is CO2Main source of (CO) of existing power plants2Annual emissions are about 106 million tons, accounting for 40.6% of the total worldwide emissions. This requires the use of circulating fluidized bed technology (CFB), Integrated Gasification Combined Cycle (IGCC), Carbon Capture and Storage (CCS), etc. to control the CO2And (4) discharging.
Laboratory bench tests are key steps of process research, and at present, fewer experimental devices for reducing the emission of desulfurized white smoke plume are provided, so that the design of the experimental device for reducing the emission of desulfurized white smoke plume is of great significance.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, provide an experimental apparatus for reduce white plume emission after desulfurization for develop and reduce white plume and CO2Discharge of SO2Has higher removing efficiencyExperimental study of the rates.
In order to realize the purpose, the technical scheme of the utility model is that:
an experimental device for reducing the emission of desulfurized white smoke plume comprises a reaction device, wherein the left side and the right side of the upper part of the reaction device are respectively provided with an air outlet pipe and a feed inlet with an upper cover, and the other end of the air outlet pipe is connected with CO2The recycling device is characterized in that the lower part of the reaction device is connected with an air inlet pipe, the other end of the air inlet pipe is connected with a white smoke plume collector, the lower part of the reaction device is also provided with a discharge outlet, the discharge outlet is connected with a solid-liquid separation device, the solid-liquid separation device is connected with a desulfurization device, a stirring device is arranged in the reaction device, and the air inlet pipe is also provided with a buffer cavity; buffer cavity right side inner wall on articulated have an tablet, be close to with the intake pipe that buffer cavity right side is connected has seted up annular seal groove in, the inside sealed lid that is provided with of seal groove, the nearly left side of sealed lid lateral wall is opened and is equipped with the air channel, fixedly connected with electro-magnet on the right side inner wall of sealed lid, electro-magnet and seal groove left side inner wall between be connected through extension spring, set up built-in temperature sensor's detection groove on the tablet, temperature sensor's control signal output passes through the connecting wire and is connected with the input electricity of the controller on the electro-magnet, the output of controller links to each other with the input electricity of electro-magnet, be equipped with the heating network in the buffer cavity, all be equipped with the stop valve on the pipeline of outlet duct and on the pipeline.
The air inlet pipe which is close to and connected with the right side of the buffer cavity body is in an expanded shape, and a sealing groove is arranged in the expanded air inlet pipe.
The upper side of the buffer cavity is fixedly connected with a power supply for supplying power to the electromagnet and the heating net.
The heating net is arranged at the position close to the inner wall of the left side of the buffer cavity, and the periphery of the heating net is connected with the inner wall of the buffer cavity respectively.
And the buffer cavity is also provided with a regulator for controlling the temperature in the buffer cavity.
The stirring device comprises a stirring long rod arranged in the axial direction in the middle of the reaction device and a motor arranged at the outer top of the reaction device and used for driving the stirring long rod, and a coaxial stirring blade group is arranged on the stirring long rod.
The solid-liquid separation device is arranged as a settling tank.
Adding Na through a feed inlet with an upper cover2SO4Powder, pure water, CaCO3And (3) powder.
And a flow valve and a flow indicator are arranged at the joint of the white smoke plume collector and the air inlet pipe.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
(1) the experimental result shows that the temperature of the white smoke plume is controlled within the range of 40-60 ℃, and CO is generated2Activation efficiency reach the best, the utility model discloses a set up the buffering cavity in the intake pipe, the inside tablet that has temperature sensor that sets up of buffering cavity, white plume temperature result transmits the controller in the buffering cavity that temperature sensor will sense, control the inside electro-magnet of sealed lid and being connected and the disconnection of power through the controller, adjust and control sealed lid and insert or extract from the seal groove is inside, and then control the closure of buffering cavity and intake pipe or open, after guaranteeing that white plume temperature in the buffering cavity reaches the temperature of settlement, just can flow into reaction unit through the intake pipe in, in order to improve CO2The activation efficiency of (3).
(2) By arranging a stirring long rod, a stirring blade group and the like in the reaction device, the added Na can be added2SO4Powder, pure water, CaCO3Mixing the powders thoroughly to form a slurry, introducing CO2To make CO2And the slurry is fully mixed and reacted.
(3) The device has simple structure and strong practicability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the buffer chamber structure of the present invention.
In the figure, 1 reaction device, 2 feed inlets3 outlet pipe and 4CO2The device comprises a recovery device, a 5 air inlet pipe, a 6 motor, a 7 discharge outlet, a 8 solid-liquid separation device, a 9 stirring device, a 10 induction plate, an 11 buffer cavity, a 12 sealing groove, a 13 sealing cover, a 14 vent groove, a 15 electromagnet, a 16 extension spring, a 17 temperature sensor, a 18 heating net, a 19 power supply, a 20 regulator and a 21 white smoke plume collector.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the figures 1 and 2 together, the experimental device for reducing the emission of white smoke plume after desulfurization comprises a reaction device 1, wherein the reaction device 1 is used for activating limestone for desulfurization into Ca (HCO) in advance3)2The left and right sides of the upper part of the reaction device 1 are respectively provided with an air outlet pipe 3 for discharging unreacted flue gas, and an ultra-fine limestone powder which is provided with an upper cover and is used for introducing water and is treated and Na used as a catalyst2SO4The other end of the powder inlet 2 and the other end of the gas outlet 3 are connected with CO2A recovery device 4 connected with the lower part of the reaction device 1 for introducing rich water vapor and CO2The other end of the air inlet pipe 5 is connected with a white smoke plume collector 21, a flow valve and a flow indicator are arranged at the joint of the white smoke plume collector 21 and the air inlet pipe 5, and the lower part of the reaction device 1 is also provided with a device for discharging Ca (HCO)3)2A discharge outlet 7 for the solution and the unreacted solid impurities, wherein the discharge outlet 7 is connected with a solid-liquid separation device 8, the solid-liquid separation device 8 is connected with a desulfurization device, and the solid-liquid separation device 8 is arranged as a settling tank. Removing solid impurities by solid-liquid separation device 8 to remove Ca (HCO)3)2The solution is introduced into a desulfurizing tower for desulfurization treatment, and stop valves are arranged on the pipeline of the gas outlet pipe 3 and the pipeline of the discharge outlet 7 connected with the solid-liquid separation device 8.
Be equipped with agitating unit 9 in reaction unit 1, agitating unit 9 is including setting up the axial stirring stock in the middle of reaction unit 1 and the motor 6 (model NZJ200S-200) that is used for driving the stirring stock that sets up at reaction unit 1 outer top, be equipped with coaxial stirring blade group on the stirring stock. By providing stirring means 9, canTo add Na2SO4Powder, pure water, CaCO3Mixing the powders thoroughly to form a slurry, introducing CO2After that, CO is reacted2And the slurry is fully mixed and reacted.
In order to ensure that the temperature of the white smoke plume introduced into the reaction device 1 is within the range of 40-60 ℃, the air inlet pipe 5 is also provided with a buffer cavity 11; buffer cavity 11 right side inner wall on articulated have an tablet 10, be close to with set up annular seal groove 12 in the intake pipe 5 that buffer cavity 11 right side is connected, in order to reduce the installation degree of difficulty of seal groove 12, preferably, be close to with intake pipe 5 that buffer cavity 11 right side is connected is the inflation form, be equipped with seal groove 12 in the intake pipe 5 that the form department of being inflation. Seal groove 12 inside be provided with sealed lid 13, the nearly left side of sealed lid 13 lateral wall is opened and is equipped with air channel 14, fixedly connected with electro-magnet 15 on the right side inner wall of sealed lid 13, be connected through extension spring 16 between electro-magnet 15 and the 12 left side inner walls of seal groove, set up built-in temperature sensor 17's detection groove on the tablet 10, temperature sensor 17's control signal output passes through the connecting wire and is connected with the input electricity of the controller on electro-magnet 15, the output of controller links to each other with electro-magnet 15's input electricity, be equipped with heating network 18 in the buffer chamber 11. And a power supply 19 for supplying power to the electromagnet 15 and the heating net 18 is fixedly connected to the upper side of the buffer cavity 11. The heating net 18 is arranged on the inner wall of the left side of the buffer cavity 11, and the periphery of the heating net 18 is connected with the inner side wall of the buffer cavity 11 respectively. The buffer cavity 11 is further provided with a regulator 20 for controlling the temperature in the buffer cavity 11, and the regulator 20 is electrically connected with the heating net 18 through a connecting wire.
When the temperature sensor 17 senses that the temperature of the white smoke plume in the buffer cavity 11 reaches the set temperature, the electromagnet 15 and the power supply 19 are controlled by the controller to be powered off, the electromagnet 15 is powered off to cause the extension spring 16 connected with the electromagnet to extend rightwards, so that the sealing cover 13 is pulled out from the inside of the sealing groove 12, and the white smoke plume flows out of the vent groove 14 and enters the reaction device 1.
The process method has unique innovation: limestone is activated in advance before desulfurization and is used for desulfurization, gas-liquid solid phase mass transfer is changed into gas-liquid mass transfer, sulfur-containing flue gas is easy to absorb, and the desulfurization rate and efficiency are improved; the impurities in the limestone are removed, and the quality of the desulfurization product gypsum is improved.
The method solves the problem that the desulfurized flue gas contains a large amount of greenhouse gas CO2And the water vapor containing sulfate pollutes the environment, breaks through the bottleneck that the gypsum generated in the existing wet desulphurization technology has poor quality and is difficult to utilize, not only meets the requirement of the current environmental protection, but also can meet the improvement of the future environmental protection standard (for example, to CO)2And sulfate control). Has the characteristics of easy realization, high removal rate and high recovery rate.
The wet desulphurization process comprises the following steps:
(1) the desulfurized flue gas at 40-60 ℃ enters an activation working section from the inlet of the reaction device, and the activation working section mainly completes CO2And limestone activation. In a bubble reactor, a large amount of CO is contained2The flue gas reacts with the limestone slurry to finish the reaction on CaCO3The activation reaction principle is as follows:
(2) activated Ca (HCO) containing solid insoluble matter3)2The solution is led out of the reaction device and enters a solid-liquid separation device (such as a sedimentation tank) for solid-liquid separation.
(3) Pure Ca (HCO)3)2The solution enters a desulfurizing tower to carry out desulfurization treatment on the coal-fired flue gas, and the reaction principle is as follows:
1）SO2+H2O→H2SO3(absorption)
2）Ca(HCO3)2+H2SO3→CaSO3+2CO2+2H2O (double decomposition)
3）CaSO3+1/2O2→CaSO4(Oxidation)
4）CaSO4+2H2O→CaSO4·2H2O (Crystal)
(4) And (4) circulating the generated desulfurization flue gas into the reaction device, and repeating the first process.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An experimental device for reducing emission of desulfurized white smoke plume is characterized by comprising a reaction device, wherein the left side and the right side of the upper part of the reaction device are respectively provided with an air outlet pipe and a feed inlet with an upper cover, and the other end of the air outlet pipe is connected with CO2The recycling device, the inferior part of the said reaction unit connects with the intake pipe, the other end of the intake pipe connects with the white plume collector, the inferior part of the reaction unit also has discharge outlets, the discharge outlet connects with the solid-liquid separation device, the solid-liquid separation device connects with the desulfurizer, there are stirring devices in the reaction unit, there are buffer chambers on the intake pipe; the inner wall of the right side of the buffer cavity is hinged with an induction plate, and an annular sealing groove is formed in an air inlet pipe connected with the right side of the buffer cavity and close to the inner wallThe utility model discloses a solid-liquid separation device, including seal groove, sealed lid, sensing plate, temperature sensor, control signal output part, the inside sealed lid that is provided with of seal groove, sealed lid lateral wall nearly left side is opened and is equipped with the air channel, fixedly connected with electro-magnet on the right side inner wall of sealed lid, be connected through extension spring between electro-magnet and the seal groove left side inner wall, set up built-in temperature sensor's detection groove on the sensing plate, temperature sensor's control signal output part is connected through the input electricity of the controller on connecting wire and the electro-magnet, the output of controller links to each other with the input electricity of electro-magnet, be equipped with the heating wire in the buffer chamber.
2. The experimental device for reducing the emission of white smoke plume after desulfurization, as recited in claim 1, wherein an air inlet pipe connected to the right side of the buffer cavity is expanded, and a sealing groove is disposed in the expanded air inlet pipe.
3. The experimental device for reducing the emission of white smoke plume after desulfurization, according to claim 1, wherein a power supply for supplying power to the electromagnet and the heating net is fixedly connected to the upper side of the buffer cavity.
4. The experimental device for reducing the emission of white smoke plume after desulfurization, according to claim 1, wherein the heating net is disposed near the inner wall of the left side of the buffer cavity, and the periphery of the heating net is connected to the inner wall of the buffer cavity.
5. The experimental device for reducing the emission of white smoke plume after desulfurization as set forth in claim 1, wherein the buffer chamber is further provided with a regulator for controlling the temperature in the buffer chamber.
6. The experimental device for reducing the emission of white smoke plume after desulfurization as claimed in claim 1, wherein the stirring device comprises a long stirring rod disposed in the middle axial direction of the reaction device and a motor disposed at the outer top of the reaction device for driving the long stirring rod, and the long stirring rod is provided with a coaxial stirring blade set.
7. The experimental facility for reducing the emission of white smoke plume after desulfurization, according to claim 1, wherein the connection between the white smoke plume collector and the air inlet pipe is provided with a flow valve and a flow indicator.
8. The experimental facility for reducing the emission of white smoke plume after desulfurization as set forth in claim 1, wherein Na is added through a feeding port with a top cover2SO4Powder, pure water, CaCO3And (3) powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440515.8U CN210522242U (en) | 2019-09-02 | 2019-09-02 | Experimental device for reduce white plume emission after desulfurization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440515.8U CN210522242U (en) | 2019-09-02 | 2019-09-02 | Experimental device for reduce white plume emission after desulfurization |
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| Publication Number | Publication Date |
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| CN210522242U true CN210522242U (en) | 2020-05-15 |
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| CN201921440515.8U Expired - Fee Related CN210522242U (en) | 2019-09-02 | 2019-09-02 | Experimental device for reduce white plume emission after desulfurization |
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Granted publication date: 20200515 Termination date: 20210902 |