Harmful gas escape-free efficient removal device

Abstract

The utility model provides a harmful gas escape-free high-efficiency removal device which comprises a premixer for mixing trapping solution, an outlet of the premixer is communicated with an inlet of a centrifugal atomizer, an outlet of the centrifugal atomizer is connected with the inlet of a centrifugal mixer, and an inlet pipeline of the centrifugal mixer is communicated with a harmful gas input pipeline. And an outlet of the centrifugal mixer is communicated with an inlet of the vapor-liquid separator. According to the utility model, high-efficiency removal of harmful gas is realized, and the escape phenomenon of the harmful gas is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of harmful gas collection, and particularly relates to an efficient removal device for harmful gases without escape. Background Art

[0002] Industries such as metallurgy, chemical industry, machinery, and electric power all emit harmful gas substances. In particular, the flue gas emitted during combustion and explosion contains harmful gas substances such as SO2. A large amount of harmful flue gas is also generated during alloy casting in industrial production. There are also many other projects that emit harmful gas substances. Currently, the common means of environmental protection treatment is to use a multi-layer spray device inside a desulfurization tower to capture harmful gas substances. In order to achieve better results, the spray device inside the desulfurization tower and the height of the desulfurization tower are increased, but there is still a phenomenon of harmful gas escape. Content of the Utility Model

[0003] In order to solve the problem that the existing harmful gas removal device still has harmful gas escape, the utility model proposes an efficient removal device for harmful gases without escape.

[0004] The technical solution of the utility model is realized as follows:

[0005] An efficient removal device for harmful gases without escape includes a pre-mixer for mixing capture solutions. The outlet of the pre-mixer is connected to the inlet of a centrifugal atomizer. The outlet of the centrifugal atomizer is connected to the inlet of a centrifugal mixer. The inlet pipe of the centrifugal mixer is connected to the input pipe of harmful gases. The outlet of the centrifugal mixer is connected to a vapor-liquid separator.

[0006] Preferably, the material outlet of the vapor-liquid separator is connected to a dehydrator, and the gas outlet is connected to a catalytic hydrogenation device.

[0007] Preferably, the pre-mixer includes a material conveyor, a liquid flow pipe, a solution pump, and a static mixer. The material conveyor contains a compound, and its outlet is connected to the liquid flow pipe. The water outlet of the liquid flow pipe is connected to the static mixer through the solution pump.

[0008] Preferably, the pre-mixer includes a material conveyor, a liquid flow pipe, and a literary and historical mixer. The material conveyor contains a compound, and the output end of the material conveyor and the output end of the liquid flow pipe are connected to the input end of the literary and historical mixer.

[0009] Preferably, two centrifugal atomizers are provided. The two centrifugal atomizers are arranged at different heights and connected to form a secondary atomization. The inlet of one centrifugal atomizer is connected to the outlet of the pre-mixer through a liquid storage tank, and the outlet of the other centrifugal atomizer is connected to the centrifugal mixer.

[0010] Preferably, the centrifugal mixer includes a centrifugal pump, a spraying device, and a centrifugal fan. The inlet of the centrifugal pump is connected to the outlet of the centrifugal atomizer. The outlet of the centrifugal pump is connected to the inlet of the spraying device through a first pipeline. The spraying device is fixed on the inlet air duct of the centrifugal fan. The outlet of the centrifugal fan is connected to the inlet of the vapor-liquid separator. The input pipeline of the harmful gas communicates with the first pipeline located in front of the inlet of the spraying device.

[0011] Preferably, the dehydrator is set as a vacuum belt dehydrator. The water outlet of the vacuum belt dehydrator is connected to a centrifugal water pump. The centrifugal water pump is communicated with the liquid flow pipeline through a connecting pipeline. A flow meter is arranged on the connecting pipeline.

[0012] Preferably, the material conveyor includes a storage tank and a screw feeder. The outlet of the storage tank is connected to the screw feeder. The outlet of the screw feeder is higher than the liquid flow pipeline.

[0013] The beneficial effects of the present utility model are as follows: An efficient removal device for harmful gases without escape of the present utility model uses a pre-mixer to quickly prepare a capture solution, and then atomizes the capture solution through a centrifugal atomizer. The atomized capture solution is efficiently and precisely mixed, and then forms a mixed gas flow with the harmful gas in the centrifugal mixer for sufficient stirring contact, enabling the capture solution to fully react chemically with the harmful gas to form a mixture, achieving a 100% capture rate of the gas harmful substances. The vapor-liquid separator separates the mixture into harmless gas and recyclable substances, which not only solves the escape phenomenon of harmful gases but also improves the recycling utilization rate. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of the pre-mixer of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the efficient removal device for harmful gases without escape of the present utility model.

[0017] In the figure:

[0018] 1. Pre - mixer; 2. Liquid storage tank; 3. Centrifugal atomizer; 4. Centrifugal mixer; 5. Vapor - liquid separator; 6. Dehydrator; 7. Centrifugal water pump; 8. Connecting pipeline; 9. Flowmeter; 10. Catalytic hydrogenation device; 11. Storage tank; 12. Liquid flow pipeline; 13. Solution pump; 14. Static mixer; 15. Screw feeder; 16. Feeding pipeline; 41. Centrifugal pump; 42. Spray device; 43. Centrifugal fan. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0020] Embodiment: As Figure 1 and Figure 2 shown in the high - efficiency removal device for harmful gas without escape, including: a pre - mixer 1 for mixing the capture solution, the outlet of the pre - mixer 1 is connected to the inlet of the liquid storage tank 2, the outlet of the liquid storage tank 2 is connected to the inlet of the centrifugal atomizer 3, the outlet of the centrifugal atomizer 3 is connected to the inlet of the centrifugal mixer 4, the outlet of the centrifugal mixer 4 is connected to the inlet of the vapor - liquid separator 5, the material outlet of the vapor - liquid separator 5 is connected to the dehydrator 6, and the gas outlet of the vapor - liquid separator 5 is connected to the catalytic hydrogenation device 10.

[0021] The dehydrator 6 is a vacuum belt dehydrator, the water outlet of the vacuum belt dehydrator is connected to the centrifugal water pump 7, and the centrifugal water pump 7 is connected to the liquid flow pipeline 12 through the connecting pipeline 8. A flowmeter 9 is provided on the connecting pipeline 8.

[0022] The pre - mixer is used to mix the capture solution, which can be a capture solution of calcium oxide and water, or a capture solution for capturing other harmful gases. The capture solution is stored in the liquid storage tank. The capture solution in the liquid storage tank is atomized by the centrifugal atomizer to complete high - efficiency fine mixing. The harmful gas and the highly - refined capture solution form a mixed gas flow in the centrifugal mixer and are fully mixed. The capture solution and the harmful gas are in full contact, and the capture rate of gas harmful substances reaches 100%. The vapor - liquid separator directly utilizes the separated gas in the catalytic hydrogenation device, and the separated water is directly recycled.

[0023] As Figure 2As shown in the figure, the pre-mixer 1 includes a storage tank 11, a liquid flow pipeline 12, a solution pump 13, a static mixer 14, a screw feeder 15 and a feeding pipeline 16. The storage tank 11 contains a compound for collecting harmful gases. The outlet of the storage tank 11 is connected to the screw feeder 15. The outlet of the screw feeder 15 is connected to the liquid flow pipeline 12 through the feeding pipeline 16. The outlet of the screw feeder 15 is higher than the liquid flow pipeline 12. Water enters from the water inlet of the liquid flow pipeline 12, and the outlet of the liquid flow pipeline 12 is connected to the static mixer 14 through the solution pump 13.

[0024] The storage tank contains calcium oxide or other compounds for trapping harmful gases. After being mixed with the water in the liquid flow pipeline, it is transported to the static mixer through the solution pump for premixing, which is used for efficiently preparing the trapping solution. The screw feeder enables the quantitative feeding of the compound in the storage tank. The outlet of the screw feeder is relatively high, which is conducive to quickly dropping the solid compound into the liquid flow pipeline.

[0025] The structure of the pre-mixer 1 may also include a storage tank, a screw feeder, a liquid flow pipeline, and a venturi mixer. The compound contained in the storage tank is output through the screw feeder. The output ends of the screw feeder and the liquid flow pipeline are connected to the input end of the venturi mixer. The compound and water are mixed in the venturi mixer to form the trapping solution.

[0026] As Figure 1 shown in the figure, two centrifugal atomizers 3 are provided. The two centrifugal atomizers are arranged at different heights and connected to form a two-stage atomization. The inlet of one centrifugal atomizer is connected to the outlet of the venturi mixer or the outlet of the static mixer through the liquid storage tank 2. The outlet of the other centrifugal atomizer is connected to the centrifugal mixer. The two centrifugal atomizers form a two-stage atomization to complete the efficient fine mixing of the trapping solution.

[0027] As Figure 1 shown in the figure, the centrifugal mixer 4 includes a centrifugal pump 41, a spraying device 42 and a centrifugal fan 43. The inlet of the centrifugal pump 41 is connected to the outlet of the centrifugal atomizer. The outlet of the centrifugal pump 41 is connected to the inlet of the spraying device 42 through the first pipeline. The spraying device 42 is fixed on the inlet air duct of the centrifugal fan 43. The outlet of the centrifugal fan 43 is connected to the inlet of the gas-liquid separator 5. The first pipeline located in front of the inlet of the spraying device is connected to the input pipeline of the harmful gas.

[0028] The centrifugal fan of the centrifugal mixer of the present utility model agitates at high speed the mixed gas flow formed by the spray-like collection solution and harmful gas in the spray device, enabling the efficiently and precisely mixed collection solution and harmful gas to come into full contact without dead angles in the spray state. The collection solution and harmful gas fully undergo chemical reactions to form a mixture. The usable harmless gas, water, and solid are separated by a vapor-liquid separator. The capture rate of gas harmful substances is as high as 100%, achieving no escape of harmful gas. The solid can be directly applied or sold. The dehydrated water is circulated through the liquid flow pipeline after being metered by a flowmeter through a centrifugal water pump via a connecting pipeline.

[0029] For the high-efficiency removal device for no escape of harmful gas of the present utility model, other devices can also be used for the material conveyor of the pre-mixer. The flowmeter on the connecting pipeline can also be replaced with a flow control valve. The spray device and the centrifugal atomizer are existing devices.

[0030] Taking sulfur dioxide gas as an example, for the high-efficiency removal device for no escape of harmful gas of the present utility model: during use, calcium oxide is loaded into the storage tank, the liquid flow pipeline is connected to a water source, and a screw feeder is used to control the dosage of calcium oxide input into the liquid flow pipeline. The calcium oxide is mixed with water in the liquid flow pipeline and then input into a static mixer through a solution pump for pre-mixing to form a collection solution. The collection solution is input into a storage tank, and the collection solution in the storage tank is input into a centrifugal atomizer for atomization, and then undergoes secondary atomization by another centrifugal atomizer for highly efficient and precise mixing, and is input into the spray device through a centrifugal pump to form a spray pattern. The harmful gas is input into the first pipeline before the spray device. The collection solution after secondary atomization and the harmful gas are mixed in the spray device to form a mixed gas flow. The mixed gas flow enters the centrifugal fan, and under the agitation of the high-speed rotation of the blades of the centrifugal fan, the calcium oxide solution in the spray state and the sulfur dioxide gas come into full contact without dead angles, forming calcium sulfite, achieving complete capture of the gas harmful substance sulfur dioxide. The mixture of calcium sulfite, solution, and gas is transported by the centrifugal fan to a vapor-liquid separator. The calcium sulfite separated by the vapor-liquid separator falls into a vacuum belt dehydrator, and after dehydration, the calcium sulfite is reused. The water is circulated through the liquid flow pipeline after being metered by a centrifugal water pump through a flowmeter.

[0031] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An efficient removal device for harmful gases without escape, characterized in that, Comprising: A pre-mixer for the mixed capture solution, the outlet of the pre-mixer is connected to the inlet of the centrifugal atomizer, the outlet of the centrifugal atomizer is connected to the inlet of the centrifugal mixer, the inlet pipeline of the centrifugal mixer is connected to the input pipeline of the harmful gas, and the outlet of the centrifugal mixer is connected to the vapor-liquid separator.

2. The high-efficiency removal device for harmful gases without escape according to claim 1, characterized in that, The material outlet of the vapor-liquid separator is connected to a dehydrator, and the gas outlet is connected to a catalytic hydrogenation device.

3. The high-efficiency removal device for harmful gases without escape according to claim 1, wherein The pre-mixer includes a material conveyor, a liquid flow pipeline, a solution pump, and a static mixer. The material conveyor contains a compound, its outlet is connected to the liquid flow pipeline, and the water outlet of the liquid flow pipeline is connected to the static mixer through the solution pump.

4. The high-efficiency removal device for harmful gases without escape according to claim 1, characterized in that, The pre-mixer includes a material conveyor, a liquid flow pipeline, and a literary and historical mixer. The material conveyor contains a compound, and the output end of the material conveyor and the output end of the liquid flow pipeline are connected to the input end of the literary and historical mixer.

5. The high-efficiency removal device for harmful gases without escape according to claim 1, wherein, Two centrifugal atomizers are provided, the two centrifugal atomizers are arranged at different heights and connected to form a two-stage atomization. The inlet of one centrifugal atomizer is connected to the outlet of the pre-mixer through a liquid storage tank, and the outlet of the other centrifugal atomizer is connected to the centrifugal mixer.

6. The high-efficiency removal device for harmful gases without escape according to claim 5, characterized in that, The centrifugal mixer includes a centrifugal pump, a spraying device, and a centrifugal fan. The inlet of the centrifugal pump is connected to the outlet of the centrifugal atomizer, the outlet of the centrifugal pump is connected to the inlet of the spraying device through a first pipeline, the spraying device is fixed on the inlet air duct of the centrifugal fan, the outlet of the centrifugal fan is connected to the inlet of the vapor-liquid separator, and the first pipeline located in front of the inlet of the spraying device is connected to the input pipeline of the harmful gas.

7. The high-efficiency removal device for harmful gases without escape according to claim 2, wherein The dehydrator is set as a vacuum belt dehydrator, the water outlet of the vacuum belt dehydrator is connected to a centrifugal water pump, the centrifugal water pump is connected to the liquid flow pipeline through a connecting pipeline, and a flow meter is arranged on the connecting pipeline.

8. The high-efficiency removal device for harmful gases without escape according to claim 3 or 4, characterized in that, The material conveyor includes a storage tank and a screw feeder, the outlet of the storage tank is connected to the screw feeder; the outlet of the screw feeder is higher than the liquid flow pipeline.

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