Desulfurization and denitrification flue gas recycling device

Abstract

The utility model provides a desulfurization and denitrification flue gas recycling device, which relates to the technical field of flue gas recycling and comprises a boiler body, one end of the boiler body is fixed and communicated with a flue gas inlet pipe, one side of the boiler body is provided with a water pump, and the output end of the water pump is fixedly connected with a water inlet pipe. And the other end of the water inlet pipe fixedly communicates with the boiler body, and the surface of the water pump fixedly communicates with a connecting pipe. In the utility model, a large amount of water vapor (generated by combustion of H in fuel) in flue gas can release a large amount of condensation latent heat after water vapor condensation, after the condensation heat exchanger is installed, the exhaust gas temperature can be reduced to below 100 DEG C, sensible heat in the flue gas and latent heat emitted after water vapor condensation are absorbed, and the heat efficiency of the boiler is improved to more than 95%; meanwhile, in the condensation and dewing process of water vapor in the flue gas, harmful gas such as NOX and SOX in the flue gas is absorbed, harmful gas in emissions is greatly lower than the national emission standard, meanwhile, fuel is saved, and annual CO2 emission of a user is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas recycling technical field especially relates to desulfurization and denitration flue gas recycling device. BACKGROUND

[0002] Statistics, various chemical plants and glass melting industries through the flue gas heat accounts for more than 10% of fuel combustion release all heat, so the waste heat resource potential is great, fully recycling good waste heat resource, to enterprise energy saving and emission reduction work, economic efficiency, has very important significance.

[0003] At present, the flue gas waste heat recovery technology mainly through: (1) condensing boiler, (2) heat pipe technology, (3) heat pump technology, (4) heat exchanger flue gas waste heat recovery technology etc., the flue gas waste heat recovery system commonly used in the glass melting industry factory at present mainly divides into three kinds, namely: (1) with the flue gas waste heat recovery system of main body of regenerative heat exchanger, (2) with the flue gas waste heat recovery system of main body of direct contact heat exchanger, and there is a large amount of water vapor in the flue gas (H in fuel combustion produces) water vapor condensation will release a large amount of latent heat of condensation, and then easily the thermal efficiency of boiler, and harmful gas in the flue gas NOX, SOX, harmful gas in the emission, and then easily pollute the environment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the prior art in the flue gas NOX, SOX, harmful gas in the emission, and harmful gas, and then easily pollute the environment problem, and puts forward the desulfurization and denitration flue gas recycling device.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: desulfurization and denitration flue gas recycling device, including the boiler body, the one end of boiler body is fixed and is communicated with the flue gas inlet pipe, the one side of boiler body is equipped with water pump, the output of water pump is fixedly connected with the water inlet pipe, the other end of water inlet pipe is fixedly communicated with boiler body, the surface of water pump is fixedly communicated with the connecting pipe, the other end of connecting pipe is fixedly communicated with water tank, the one end of boiler body is fixedly communicated with the flue gas outlet pipe, the other end of flue gas outlet pipe is fixedly communicated with energy saving device, and the both ends of energy saving device and near the top are fixedly communicated with connecting liquid pipe and liquid outlet pipe respectively, the other end of connecting liquid pipe is fixedly communicated with liquid pump, the output of liquid pump is fixedly communicated with liquid suction pipe, and the other end of liquid suction pipe and liquid outlet pipe is fixedly communicated with water tank.

[0006] Preferably, the top surface of the boiler body is fixedly installed with a pressure gauge.

[0007] Preferably, the bottom of the boiler body is fixedly connected with a support plate, the top of the support plate is fixedly connected with arc plates in a symmetrical manner, and the inner arc walls of the arc plates are attached to the bottom of the boiler body.

[0008] Preferably, the bottom of the economizer and close to the four corners are fixedly connected with support columns, and the bottom of the support column is fixedly connected with a bottom plate.

[0009] Preferably, the other end of the economizer is fixedly connected with a connecting cylinder, and the other end of the connecting cylinder is fixedly connected with a chimney.

[0010] Preferably, the top of the water tank is fixedly connected with a liquid outlet pipe, the other end of the liquid outlet pipe is fixedly connected with a water replenisher, and the other end of the water replenisher is fixedly connected with a liquid inlet pipe.

[0011] Compared with the prior art, the advantages and positive effects of the utility model lie in,

[0012] 1、In the utility model, there is a large amount of water vapor (H in fuel combustion) in flue gas, and a large amount of latent heat of condensation is released when water vapor condenses. After the installation of the condensing heat exchanger, the exhaust gas temperature can be reduced to below 100 degrees, the sensible heat and latent heat released after the condensation of water vapor in the flue gas are absorbed, and the thermal efficiency of the boiler is improved to more than 95%.

[0013] 2、In the utility model, during the condensation and dewing process of water vapor in flue gas, harmful gases such as NOX and SOX in flue gas are absorbed, harmful gases in the emission are greatly lower than the national emission standard, fuel is saved, and annual CO2 emission of users is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The utility model proposes the overall structure perspective view of the desulfurization and denitration flue gas recycling device;

[0015] Fig. 2 The utility model proposes the overall structure side view of the desulfurization and denitration flue gas recycling device.

[0016] Legend: 1, boiler body;2, pressure gauge;3, smoke inlet pipe;4, support plate;5, arc plate;6, water pump;7, water inlet pipe;8, water tank;9, connecting pipe;10, smoke outlet pipe;11, economizer;12, connecting cylinder;13, chimney;14, support column;15, bottom plate;16, connecting liquid pipe;17, liquid pump;18, liquid suction pipe;19, liquid outlet pipe;20, water replenisher;21, liquid inlet pipe. DETAILED DESCRIPTION

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1, such as Figs. 1-2 As shown, this utility model provides a desulfurization and denitrification flue gas recovery and utilization device, including a boiler body 1. One end of the boiler body 1 is fixed and connected to a flue gas inlet pipe 3. A water pump 6 is provided on one side of the boiler body 1. The output end of the water pump 6 is fixedly connected to a water inlet pipe 7. The other end of the water inlet pipe 7 is fixedly connected to the boiler body 1. A connecting pipe 9 is fixedly connected to the surface of the water pump 6. The other end of the connecting pipe 9 is fixedly connected to a water tank 8. One end of the boiler body 1 is fixedly connected to a flue gas outlet pipe 10. The other end of the flue gas outlet pipe 10 is fixedly connected to an energy-saving device 11. The two ends of the energy-saving device 11 and near the top are respectively fixedly connected to a connecting liquid pipe 16 and a liquid outlet pipe 19. The other end of the connecting liquid pipe 16 is fixedly connected to a liquid pump 17. The output end of the liquid pump 17 is fixedly connected to a suction pipe 18. The other ends of the suction pipe 18 and the liquid outlet pipe 19 are fixedly connected to the water tank 8.

[0020] The overall effect of Embodiment 1 is as follows: A flue gas inlet pipe 3 is fixedly connected to one end of the boiler body 1, allowing flue gas to enter the boiler body 1. A water pump 6 is installed on one side of the boiler body 1, with a water inlet pipe 7 fixedly connected to the output end of the water pump 6. The other end of the water inlet pipe 7 is fixedly connected to the boiler body 1. A connecting pipe 9 is fixedly connected to the surface of the water pump 6, and a water tank 8 is fixedly connected to the other end of the connecting pipe 9. This allows water from the water tank 8 to be pumped into the boiler body 1 through the connecting pipe 9 and the water inlet pipe 7. There is a smoke outlet pipe 10, which can achieve the effect of smoke discharge. An energy-saving device 11 is fixedly connected to the other end of the smoke outlet pipe 10, which can achieve the effect of energy saving. A connecting liquid pipe 16 and a liquid outlet pipe 19 are fixedly connected to the two ends of the energy-saving device 11 near the top, respectively. A liquid pump 17 is fixedly connected to the other end of the connecting liquid pipe 16. A liquid suction pipe 18 is fixedly connected to the output end of the liquid pump 17. The other ends of the liquid suction pipe 18 and the liquid outlet pipe 19 are fixedly connected to the water tank 8, which can achieve the effect of the liquid pump 17 filling the water tank 8 through the liquid suction pipe 18, the connecting liquid pipe 16 and the energy-saving device 11.

[0021] Example 2, as Figs. 1-2As shown, the top surface of the boiler body 1 is fixedly provided with a pressure gauge 2; the bottom of the boiler body 1 is fixedly connected with a support plate 4, the top of the support plate 4 is fixedly connected with arc plates 5 symmetrically, the inner arc wall of the arc plate 5 is attached to the bottom of the boiler body 1; the bottom of the economizer 11 and near the four corners are fixedly connected with support columns 14, the bottom of the support column 14 is fixedly connected with a bottom plate 15; the other end of the economizer 11 is fixedly connected with a connecting cylinder 12, the other end of the connecting cylinder 12 is fixedly connected with a chimney 13; the top of the water tank 8 is fixedly connected with a liquid outlet pipe 19, the other end of the liquid outlet pipe 19 is fixedly connected with a water supplement device 20, the other end of the water supplement device 20 is fixedly connected with a liquid inlet pipe 21.

[0022] The effect achieved by the whole embodiment 2 is that the top surface of the boiler body 1 is fixedly provided with a pressure gauge 2, which can monitor the pressure inside the boiler body 1; the bottom of the boiler body 1 is fixedly connected with a support plate 4, the top of the support plate 4 is fixedly connected with arc plates 5 symmetrically, the inner arc wall of the arc plate 5 is attached to the bottom of the boiler body 1, which can support the bottom of the boiler body 1; the bottom of the economizer 11 and near the four corners are fixedly connected with support columns 14, the bottom of the support column 14 is fixedly connected with a bottom plate 15, which can support the bottom of the economizer 11; the other end of the economizer 11 is fixedly connected with a connecting cylinder 12, the other end of the connecting cylinder 12 is fixedly connected with a chimney 13, which can exhaust smoke; the top of the water tank 8 is fixedly connected with a liquid outlet pipe 19, the other end of the liquid outlet pipe 19 is fixedly connected with a water supplement device 20, the other end of the water supplement device 20 is fixedly connected with a liquid inlet pipe 21, which can supplement water inside the water tank 8.

[0023] Working principle: the water in the water tank 8 is pumped into the boiler body 1 through the connecting pipe 9 and the water inlet pipe 7 by the water pump 6, then the flue gas is pumped into the boiler body 1 through the smoke inlet pipe 3, which can heat the water and recycle the waste heat in the flue gas, and the flue gas after absorbing the waste heat can be discharged from the chimney 13 through the economizer 11, which can supplement water inside the water tank 8 through the water supplement device 20, and the process of flue gas waste heat recovery can make a large amount of water vapor (H produced by burning fuel) in the flue gas, and the condensation of water vapor will release a large amount of latent heat of condensation, after installing the condensing heat exchanger, the exhaust gas temperature can be reduced to below 100 degrees, absorbing the sensible heat in the flue gas and the latent heat released after the condensation of water vapor, the thermal efficiency of the boiler body 1 is improved to more than 95%, and in the process of condensation of water vapor in the flue gas, harmful gases such as NOX and SOX in the flue gas are absorbed, the harmful gases in the exhaust are much lower than the national emission standard, the fuel is saved, and the annual CO2 emission of the user is reduced.

[0024] The wiring diagram of the boiler body 1, the pressure gauge 2, the water pump 6, the energy saver 11, the liquid pump 17 and the water replenisher 20 belongs to the common knowledge in the field, and the working principle is a known technology, and the model is selected according to actual use, so the control mode and wiring arrangement of the boiler body 1, the pressure gauge 2, the water pump 6, the energy saver 11, the liquid pump 17 and the water replenisher 20 are not explained in detail.

[0025] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still falls within the protection scope of the present application.

Claims

1. A device for recovering and utilizing desulfurized and denitrified flue gas, comprising a boiler body (1), characterized in that: One end of the boiler body (1) is fixed and communicated with the smoke inlet pipe (3), one side of the boiler body (1) is provided with the water pump (6), the output end of the water pump (6) is fixedly connected with the water inlet pipe (7), the other end of the water inlet pipe (7) is fixedly communicated with the boiler body (1), the surface of the water pump (6) is fixedly communicated with the connecting pipe (9), the other end of the connecting pipe (9) is fixedly communicated with the water tank (8), one end of the boiler body (1) is fixedly communicated with the smoke outlet pipe (10), the other end of the smoke outlet pipe (10) is fixedly communicated with the energy saving device (11), the two ends of the energy saving device (11) and close to the top are fixedly communicated with the connecting liquid pipe (16) and the liquid outlet pipe (19) respectively, the other end of the connecting liquid pipe (16) is fixedly communicated with the liquid pump (17), the output end of the liquid pump (17) is fixedly communicated with the liquid suction pipe (18), the other end of the liquid suction pipe (18) and the liquid outlet pipe (19) is fixedly communicated with the water tank (8).

2. The desulfurization and denitrification flue gas recycling device according to claim 1, characterized in that: The top surface of the boiler body (1) is fixedly installed with the pressure gauge (2).

3. The desulfurization and denitrification flue gas recycling device according to claim 1, characterized in that: The bottom of the boiler body (1) is fixedly connected with the supporting plate (4), the top of the supporting plate (4) is fixedly connected with the arc plate (5) symmetrically, and the inner arc wall of the arc plate (5) is attached to the bottom of the boiler body (1).

4. The desulfurization and denitrification flue gas recycling device according to claim 1, characterized in that: The bottom of the energy saving device (11) and close to the four corners are fixedly connected with the supporting column (14), and the bottom of the supporting column (14) is fixedly connected with the bottom plate (15).

5. The desulfurization and denitrification flue gas recycling device according to claim 1, characterized in that: The other end of the energy saving device (11) is fixedly communicated with the connecting cylinder (12), and the other end of the connecting cylinder (12) is fixedly communicated with the chimney (13).

6. The desulfurization and denitration flue gas recycling device according to claim 1, characterized in that: The top of the water tank (8) is fixedly communicated with the liquid outlet pipe (19), the other end of the liquid outlet pipe (19) is fixedly communicated with the water supplement device (20), and the other end of the water supplement device (20) is fixedly communicated with the liquid inlet pipe (21).

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