Escape-phenomenon-free device for efficiently removing harmful substances in gas

Abstract

The invention provides an escape-phenomenon-free device for efficiently removing harmful substances in gas, which comprises a spraying device, an atomizing device, a vapor-liquid separator, a gas treatment device, a vacuum dehydration device, a material conveying device, a Venturi tube and a liquid storage tank, one input end of the spraying device is connected with harmful gas, and the other input end of the spraying device is connected with the output end of the atomizing device; the output end of the spraying device is connected with a vapor-liquid separator through a centrifugal fan, the gas output end of the vapor-liquid separator is connected with a gas treatment device, the liquid output end of the vapor-liquid separator is connected with a vacuum dehydration device, and the output end of the vacuum dehydration device is connected with one input end of a Venturi tube through a drainage pipeline. The other input end of the Venturi tube is connected with a material conveying device, the output end of the Venturi tube is connected to a liquid storage tank through a connecting pipeline, the output end of the liquid storage tank is connected with the input end of an atomization device, and a valve for supplementing liquid is arranged on the connecting pipeline. According to the invention, gas harmful substances are efficiently removed without escape.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas harmful substance collection, in particular to a high-efficiency gas harmful substance removal device without escape phenomenon. BACKGROUND

[0002] Metallurgical, chemical, mechanical, electric power and other industries will discharge gas harmful substances, especially the flue gas containing SO2 and other gas harmful substances, a large amount of harmful flue gas will be produced during alloy pouring in industrial production, and there are many other gas harmful substance discharge projects, and the current environmental protection treatment means generally adopts a multi-layer spraying device arranged in a desulfurization tower to capture gas harmful substances, in order to achieve better effect, the spraying device in the desulfurization tower and the tower height of the desulfurization tower are increased, but the gas harmful substance escape phenomenon still exists. SUMMARY

[0003] In order to solve the problem of gas harmful substance escape in the prior art gas harmful substance removal device, the present application provides a high-efficiency gas harmful substance removal device without escape phenomenon.

[0004] The technical scheme of the present application is as follows: The high-efficiency gas harmful substance removal device without escape phenomenon comprises a spraying device, an atomizing device, a vapor-liquid separator, a gas treatment device, a vacuum dehydration device, a material conveying device, a Venturi tube and a liquid storage tank, one input end of the spraying device is connected with harmful gas, the other input end is connected with the output end of the atomizing device, the output end of the spraying device is connected with the vapor-liquid separator through a centrifugal fan, the gas output end of the vapor-liquid separator is connected with the gas treatment device, the liquid output end is connected with the vacuum dehydration device, the output end of the vacuum dehydration device is connected with one input end of the Venturi tube through a drainage pipeline, the other input end of the Venturi tube is connected with the material conveying device, the output end is connected to the liquid storage tank through a connecting pipeline, the output end of the liquid storage tank is connected with the input end of the atomizing device, and a valve for supplementing liquid is arranged on the connecting pipeline. The mixture of the material conveying device and the water of the vacuum dehydration device are mixed in the Venturi tube to form a capture solution, the capture solution is atomized in the atomizing device through the liquid storage tank, the atomized solution forms a mixed gas flow with the harmful gas in the spraying device, the harmful gas and the capture solution are fully contacted and chemically reacted to form a mixture through high-speed stirring of the centrifugal fan, the separated gas after the vapor-liquid separator is treated in the gas treatment device, and the mixture is treated into solid and water through the vacuum dehydration device, and the water is recycled through the drainage pipeline.

[0005] Preferably, the gas treatment device is a catalytic hydrogenation device, which comprises at least two reaction towers, the bottom end of each reaction tower is communicated with the top end of the adjacent reaction tower, each reaction tower is internally filled with a catalyst for hydrogenation reaction, and the bottom end of the first reaction tower is connected with the gas output end of the vapor-liquid separator.

[0006] The device for removing harmful gas without escape phenomenon according to claim 1, wherein a centrifugal water pump is arranged on the water drainage pipeline, and the centrifugal water pump is close to the vacuum dehydration device, and a flow meter is arranged on the water drainage pipeline, and the flow meter is close to the Venturi tube.

[0007] Preferably, the atomizing device is a centrifugal atomizer.

[0008] Preferably, the material conveying device comprises a storage tank and a screw feeder, the screw feeder is arranged above the Venturi tube through a material conveying pipeline, an inlet of the screw feeder is connected to the storage tank, and the storage tank is arranged higher than the screw feeder.

[0009] Preferably, a centrifugal pump is arranged on a front side of an input end of the atomizing device.

[0010] The device for removing harmful gas without escape phenomenon according to the present application has the following advantages: the device for removing harmful gas without escape phenomenon according to the present application can rapidly prepare a trapping solution in the Venturi tube, then atomize the trapping solution through the centrifugal atomizer to perform high-efficiency mixing, then form a mixed gas flow with harmful gas in the spraying device, then output the mixed gas flow to the vapor-liquid separator after sufficient stirring and contact in the centrifugal fan, then directly process the gas output from the vapor-liquid separator through the gas processing device, and the trapping rate of the harmful gas reaches 100%. The mixture output from the vapor-liquid separator is dehydrated through the vacuum dehydration device, and then the water is recycled to the Venturi tube through the water drainage pipeline, and the water drainage pipeline is regularly supplemented with liquid. Therefore, the device for removing harmful gas without escape phenomenon according to the present application can completely remove the harmful gas, realize the removal of the harmful gas without escape, save energy, and recycle. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0012] Figure 1 FIG. 1 is a structural schematic diagram of the device for removing harmful gas without escape phenomenon according to the present application.

[0013] In the drawings: 1, spraying device; 2, atomizing device; 3, vapor-liquid separator; 4, catalytic hydrogenation device; 5, vacuum dehydration device; 6, material conveying device; 7, Venturi tube; 8, liquid storage tank; 9, valve; 11, centrifugal fan; 12, water drainage pipeline; 13, connecting pipeline; 14, centrifugal water pump; 15, flow meter; 16, centrifugal pump. DETAILED DESCRIPTION

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example: Figure 1 The device shown is a highly efficient gaseous pollutant removal device with no escape phenomenon, comprising: a spray device 1, an atomizing device 2, a gas-liquid separator 3, a catalytic hydrogenation device 4, a vacuum dehydration device 5, a material conveying device 6, a venturi tube 7, and a storage tank 8. One input end of the spray device 1 is connected to the pollutant gas, and the other input end is connected to the output end of the atomizing device 2. The output end of the spray device 1 is connected to the gas-liquid separator 3 via a centrifugal fan 11. The gas output end of the gas-liquid separator 3 is connected to the catalytic hydrogenation device 4, and the liquid output end is connected to the vacuum dehydration device 5. The output end of the vacuum dehydration device 5 is connected to one input end of the venturi tube 7 via a drain pipe 12. The other input end of the venturi tube 7 is connected to the material conveying device 6, and the output end is connected to the storage tank 8 via a connecting pipe 12. The output end of the storage tank 8 is connected to the input end of the atomizing device 2, and the output end of the atomizing device 2 is connected to... A liquid replenishment valve 9 is installed on the connecting pipe 13 of the spray device 1, and a centrifugal water pump 14 and a flow meter 15 are installed on the drain pipe 12. The centrifugal water pump 14 is close to the vacuum dehydration device 5, and the flow meter 15 is close to the venturi tube 7. A centrifugal pump 16 is installed on the front side of the input end of the atomizing device of the spray device. The mixture of the material conveying device 6 and the water of the vacuum dehydration device 5 are mixed in the venturi tube 7 to form a collection solution. The collection solution is atomized in the atomizing device 2 through the storage tank 8. The atomized solution forms a mixed airflow with the harmful gas in the spray device 1. The high-speed stirring of the centrifugal fan 11 makes the harmful gas and the collection solution fully contact each other and undergo a chemical reaction to form a mixture of gaseous harmful substances. The gas separated by the gas-liquid separator is processed in the gas treatment device. The mixture is processed into solid and water by the vacuum dehydration device. The water is recycled through the drain pipe.

[0016] The catalytic hydrogenation unit 4 includes at least two reaction towers, the bottom of each reaction tower is connected to the top of the adjacent reaction tower, each reaction tower is filled with catalyst for hydrogenation reaction, and the bottom of the first reaction tower is connected to the gas output end of the gas-liquid separator.

[0017] The atomizing device is a centrifugal atomizer. The material conveying device includes a storage tank and a screw feeder. The screw feeder is installed above the venturi tube via a conveying pipe. The inlet of the screw feeder is connected to the storage tank, and the storage tank is positioned higher than the screw feeder.

[0018] The device for removing harmful gas without escape phenomenon of the present application uses calcium oxide or other compounds that can capture harmful gas to fill the storage tank, uses the screw feeder to control the dosage of calcium oxide input into the venturi, and forms the capture solution of water and calcium oxide or other compounds in the venturi, which is input into the centrifugal atomizer through the storage tank for high-efficiency mixing, is input into the spraying device through the centrifugal pump, and is input into the spraying device with harmful gas, so that the harmful gas and the capture solution form the mixed gas flow in the spraying device, enter the centrifugal fan, are stirred at high speed under the high-speed rotation of the centrifugal fan blades, fully contact calcium oxide and sulfur dioxide, capture 100% of the sulfur dioxide gas to form the mixture, transport the mixture to the vapor-liquid separator, separate the calcium carbonate slurry mixture to fall into the vacuum dehydration device, reuse the calcium carbonate after dehydration, and transport the water to the venturi through the drain pipe by the centrifugal water pump for recycling, and use other harmless gas in the catalytic hydrogenation device to realize the high-efficiency removal of harmful gas without escape phenomenon.

[0019] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A highly efficient device for removing harmful gaseous substances without escape, characterized in that, include: The system includes a spraying device, an atomizing device, a vapor-liquid separator, a gas processing device, a vacuum dehydration device, a material conveying device, a venturi tube, and a storage tank. One input end of the spraying device is connected to the harmful gas, and the other input end is connected to the output end of the atomizing device. The output end of the spraying device is connected to the vapor-liquid separator via a centrifugal fan. The gas output end of the vapor-liquid separator is connected to the gas processing device, and the liquid output end is connected to the vacuum dehydration device. The output end of the vacuum dehydration device is connected to one input end of the venturi tube via a drainage pipe. The other input end of the venturi tube is connected to the material conveying device, and the output end is connected to the storage tank via a connecting pipe. The output end of the storage tank is connected to the input end of the atomizing device, and a liquid replenishment valve is installed on the connecting pipe. The mixture from the material conveying device and the water from the vacuum dehydration device are mixed in the venturi tube to form a collection solution. The collection solution is then atomized in the atomizing device after passing through the storage tank. The atomized solution forms a mixed airflow with the harmful gas in the spray device. The high-speed agitation of the centrifugal fan ensures that the harmful gas and the collection solution come into full contact and undergo a chemical reaction, forming a mixture of gaseous harmful substances. The gas separated by the gas-liquid separator is then processed in the gas treatment device. The mixture is then processed into solids and water by the vacuum dehydration device, and the water is recycled through the drainage pipe.

2. The highly efficient gaseous pollutant removal device with no escape phenomenon according to claim 1, characterized in that, The gas processing device is a catalytic hydrogenation device, which includes at least two reaction towers. The bottom of each reaction tower is connected to the top of the adjacent reaction tower. Each reaction tower is filled with a catalyst for hydrogenation reaction. The bottom of the first reaction tower is connected to the gas output end of the gas-liquid separator.

3. The highly efficient gaseous pollutant removal device with no escape phenomenon according to claim 1, characterized in that, A centrifugal water pump and a flow meter are installed on the drainage pipe. The centrifugal water pump is close to the vacuum dehydration device, and the flow meter is close to the venturi tube.

4. The highly efficient gaseous pollutant removal device with no escape phenomenon according to claim 1, characterized in that, The atomizing device is configured as a centrifugal atomizer.

5. The highly efficient gaseous pollutant removal device with no escape phenomenon according to claim 1, characterized in that, The material conveying device includes a storage tank and a screw feeder. The screw feeder is installed above the venturi tube through a conveying pipe. The inlet of the screw feeder is connected to the storage tank, and the storage tank is positioned higher than the screw feeder.

6. The highly efficient gaseous pollutant removal device with no escape phenomenon according to claim 1, characterized in that, A centrifugal pump is installed on the front side of the input end of the atomizing device of the spraying device.

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