Denitration circulating treatment device for boiler

Abstract

The utility model belongs to the technical field of boiler denitration, and particularly relates to a boiler denitration circulating treatment device which comprises a treatment box, a control panel fixedly installed on the front face of the treatment box, a liquid storage box fixedly installed on one side of the treatment box, a water pump fixedly installed on the top of the liquid storage box, a sewage draining outlet formed in the bottom of the inner wall of the treatment box and a filter screen plate arranged on the inner wall of the treatment box. A spraying frame is fixedly mounted in the treatment box, an exhaust pipe is arranged at the top of the treatment box, and a connecting pipe is fixedly connected to one side of the exhaust pipe. The liquid storage tank, the liquid inlet, the gas inlet, the heat exchange pipe and the exhaust port are matched for use, so that the injected waste gas can be quickly and effectively subjected to heat exchange, the ammonia water in the liquid storage tank can be conveniently heated, the waste of heat energy is avoided, the heated ammonia water can form finer atomized particles during spraying, the distribution of ammonia gas is improved, and the service life of the ammonia gas is prolonged. The catalyst is more uniformly mixed with the waste gas, so that the uniformity, activity and efficiency of the reaction are improved, and the denitration effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler denitration technical field, concretely is a kind of boiler denitration circulating treatment device. BACKGROUND

[0002] Boiler is a kind of energy conversion equipment, the energy input to boiler has chemical energy in fuel, electric energy, boiler exports have certain heat energy steam, high-temperature water or organic heat carrier.Boiler is the original meaning of the water container heated on the fire, and furnace refers to the place of burning fuel.Boiler includes two parts of pot and furnace.Boiler produces hot water or steam, which can directly provide the required heat for industrial production and people's life, or can be converted into mechanical energy through steam power device, or can be converted into electric energy through generator.Boiler that provides hot water is called hot water boiler, mainly used for life, and a small amount is used in industrial production.Boiler that produces steam is called steam boiler, commonly known as boiler, mainly used in thermal power plant, ship, locomotive and industrial enterprise.Boiler will discharge flue gas when in use, and flue gas contains a lot of nitrogen oxides, so denitration device is needed to remove nitrogen oxides in flue gas to avoid pollution of atmospheric environment.

[0003] The prior art has the following disadvantages: the prior art discloses a boiler flue circulating denitration device with publication number CN202022644869.3, which comprises a denitration device body, a collecting pipe fixedly connected to the lower end of the denitration device body, a hopper fixedly connected to the inner lower end of the denitration device body, an inlet pipe fixedly connected to the left side of the denitration device body, a clamping cover fixedly connected to the inner left side of the denitration device body, a lower dust plate fixedly connected to the inner upper end of the denitration device body, an upper dust plate fixedly connected to the inner upper end of the denitration device body, a lower sprayer fixedly connected to the inner upper end of the denitration device body, an upper sprayer fixedly connected to the inner upper end of the denitration device body, a plurality of spray pipes fixedly connected to the lower end of the lower sprayer and the upper sprayer respectively, an outlet pipe fixedly connected to the upper end of the denitration device body, and an outlet cover fixedly connected to the inner upper end of the denitration device body. The lower dust plate, the upper dust plate, the lower sprayer and the upper sprayer are arranged respectively to achieve the effect of circulating denitration. The through hole, the collecting pipe and the hopper are arranged to facilitate the collection of dirt and impurities generated after circulating denitration, thereby avoiding environmental pollution caused by leakage.

[0004] The above-mentioned device can facilitate denitration of waste gas during use, but it is difficult to avoid incomplete denitration of waste gas during use, which is not convenient for better circulating denitration of waste gas and may pollute the air environment. Moreover, it is not convenient to recycle the heat of waste gas during introduction, which may cause waste of heat energy and reduce the practicability and functionality of the structure. UTILITY MODEL CONTENT

[0005] In view of the defects of the prior art, the utility model provides a boiler denitration circulating treatment device to solve the problems in the prior art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a boiler denitration circulating treatment device, including the treatment box, control panel is fixedly installed on the treatment box front, the treatment box one side is fixedly installed with the liquid storage tank, the water pump is fixedly installed on the liquid storage tank top, the treatment box inner wall bottom is provided with the blowdown, the treatment box inner wall is provided with the filter screen, the treatment box inside is fixedly installed with the spray frame, the treatment box top is provided with the exhaust pipe, the exhaust pipe one side is fixedly connected with the connecting pipe, the connecting pipe one end is fixedly connected with the circulating fan, the circulating fan one side is fixedly connected with the backflow pipe.

[0007] As a preferred technical scheme of the utility model, the liquid storage tank includes liquid inlet, air inlet, heat exchange pipe and exhaust port, the liquid storage tank top is provided with liquid inlet, the liquid storage tank top is provided with air inlet, the liquid storage tank inside is provided with heat exchange pipe, the liquid storage tank bottom is provided with exhaust port, the heat exchange pipe is linked with air inlet and exhaust port, the heat exchange pipe is provided as spiral shape, the exhaust port is linked with the treatment box.

[0008] As a preferred technical scheme of the utility model, the water pump is electrically connected with the control panel through the wire, and the water pump is communicated with the inside of the liquid storage tank through the water pipe.

[0009] As a preferred technical scheme of the utility model, the spray frame includes liquid injection port, shunt pipe, spray head and liquid guide pipe, one side of the spray frame is provided with liquid injection port, the inside of the spray frame is provided with shunt pipe, the bottom of the shunt pipe is provided with spray head, the spray frame is provided with liquid guide pipe, the spray frame is provided with a plurality of, the spray frame is communicated through the liquid guide pipe, and the liquid injection port is connected with the water pump through the water pipe.

[0010] As a preferred technical scheme of the utility model, the spray head is provided with a plurality of, and the spray head is uniformly and symmetrically distributed at the bottom of the shunt pipe.

[0011] As a preferred technical scheme of the utility model, the exhaust pipe includes exhaust valve and air outlet, the exhaust valve is fixedly installed on the exhaust pipe, the exhaust valve one end is provided with air outlet, the gas detector is fixedly installed in the exhaust pipe, and the exhaust pipe is connected with the circulating fan through the connecting pipe.

[0012] As a preferred technical scheme of the utility model, the circulating fan is electrically connected with the control panel through wires, the circulating fan is connected with one side of the bottom of the treatment box through a backflow pipe, and a gas valve is arranged at the connection position of the backflow pipe and the treatment box.

[0013] Compared with the prior art, the utility model provides a boiler denitration circulating treatment device, has the following beneficial effects:

[0014] 1、This boiler denitration circulating treatment device, through setting up liquid storage tank, liquid inlet, air inlet, heat exchange pipe and exhaust port cooperate and use, can carry out quick and effective heat exchange to the injected waste gas, convenient for heating the ammonia water in the liquid storage tank, avoid causing heat energy waste, at the same time, water pump, spray frame, liquid injection port, shunt pipe, spray head and liquid guide pipe cooperate and use, ammonia water in the liquid storage tank can be guided out, convenient for the comprehensive uniform spraying denitration work of waste gas, at the same time, since the ammonia water is heated, the heated ammonia water can form finer atomized particles when spraying, improve the distribution of ammonia gas, make it form more uniform mixture with waste gas, help to improve the uniformity, activity and efficiency of reaction, thereby improve the denitration effect.

[0015] 2、This boiler denitration circulating treatment device, through setting up exhaust pipe, exhaust valve, connecting pipe, circulating fan and backflow pipe cooperate and use, through setting up gas detector in the exhaust pipe, the waste gas after denitration can be detected in real time, the circulating fan can be controlled to work when the detection is not up to standard, the waste gas is guided into the treatment box inside through the connecting pipe and backflow pipe again, convenient for circulating denitration, can make the denitration more thorough, avoid easily causing environmental pollution. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the internal structure schematic view of the liquid storage tank of the utility model;

[0018] Figure 3 It is the internal structure schematic view of the treatment box of the utility model;

[0019] Figure 4 It is the spray frame structure schematic view of the utility model.

[0020] In the drawing: 1, treatment box;2, control panel;3, liquid storage tank;301, liquid inlet;302, air inlet;303, heat exchange pipe;304, exhaust port;4, water pump;5, blowdown;6, filter screen;7, spray frame;701, liquid injection port;702, shunt pipe;703, spray head;704, liquid guide pipe;8, exhaust pipe;801, exhaust valve;802, gas outlet;9, connecting pipe;10, circulating fan;11, backflow pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Please refer to Figures 1-4 In the embodiment, the boiler denitration circulating treatment device comprises a treatment box 1, a control panel 2 is fixedly installed on the front face of the treatment box 1, a liquid storage tank 3 is fixedly installed on one side of the treatment box 1, a water pump 4 is fixedly installed on the top of the liquid storage tank 3, a blowdown port 5 is arranged on the inner wall bottom of the treatment box 1, a filter screen plate 6 is arranged on the inner wall of the treatment box 1, a spraying frame 7 is fixedly installed inside the treatment box 1, an exhaust pipe 8 is arranged on the top of the treatment box 1, a connecting pipe 9 is fixedly connected to one side of the exhaust pipe 8, a circulating fan 10 is fixedly connected to one end of the connecting pipe 9, and a return pipe 11 is fixedly connected to one side of the circulating fan 10.

[0023] Referring to Figure 1 and Figure 2 The liquid storage tank 3 comprises an inlet port 301, an air inlet port 302, heat exchange pipes 303 and an exhaust port 304, the inlet port 301 is arranged on the top of the liquid storage tank 3, the air inlet port 302 is arranged on the top of the liquid storage tank 3, the heat exchange pipes 303 are arranged inside the liquid storage tank 3, the exhaust port 304 is arranged on the bottom of the liquid storage tank 3, the heat exchange pipes 303 are in communication with the air inlet port 302 and the exhaust port 304, the heat exchange pipes 303 are arranged in a spiral shape, and the exhaust port 304 is in communication with the treatment box 1.

[0024] Specifically, the waste gas injected can be conveniently heat-exchanged, and heat can be conveniently recycled.

[0025] Referring to Figure 1 、 Figure 3 and Figure 4 The water pump 4 is electrically connected to the control panel 2 through wires, and the water pump 4 is in communication with the inside of the liquid storage tank 3 through a water pipe; the spraying frame 7 comprises an injection port 701, a shunt pipe 702, a spray head 703 and a liquid guide pipe 704, the spraying frame 7 is provided with the injection port 701 on one side, the spraying frame 7 is provided with the shunt pipe 702 on the inner side, the shunt pipe 702 is provided with the spray head 703 on the bottom, the spraying frame 7 is provided with the liquid guide pipe 704, a plurality of spraying frames 7 are arranged, the spraying frames 7 are in communication with each other through the liquid guide pipes 704, and the injection port 701 is connected with the water pump 4 through a water pipe; a plurality of spray heads 703 are arranged, and the spray heads 703 are uniformly and symmetrically distributed on the bottom of the shunt pipe 702.

[0026] Specifically: facilitate the control water pump 4 work, convenient export ammonia water from the nozzle 703 inside the liquid tank 3 is sprayed, can carry out the waste gas denitration work.

[0027] With reference to Figure 1 And Figure 3 , the exhaust pipe 8 includes exhaust valve 801 and outlet 802, the exhaust valve 801 is fixedly installed on the exhaust pipe 8, the exhaust valve 801 one end is provided with outlet 802, the exhaust pipe 8 inside fixedly installed with gas detector, the exhaust pipe 8 is connected with circulating fan 10 through connecting pipe 9; circulating fan 10 is electrically connected with control panel 2 through wire, circulating fan 10 is connected with the bottom side of processing box 1 through backflow pipe 11, the backflow pipe 11 is provided with gas valve at processing box 1 connection place;

[0028] Specifically: facilitate the detection of gas emissions, while the non-compliance gas can be recycled denitration work.

[0029] The working principle and use process of the utility model: the operator connects the exhaust pipe of the boiler with the top air inlet 302 of the liquid tank 3, the exhaust gas can be injected into the processing box 1 through the heat exchange pipe 303 and the exhaust port 304, the heat contained in the exhaust gas can be quickly exchanged through the ammonia water in the liquid tank 3, so that the ammonia water can be heated, the water pump 4 is controlled to work, the heated ammonia water in the liquid tank 3 can be injected into the spraying frame 7 through the liquid injection port 701, then sprayed through the liquid guide pipe 704, the shunt pipe 702 and the nozzle 703, which facilitates the spray denitration of the exhaust gas, the exhaust gas after spray denitration enters the exhaust pipe 8, the gas detector in the exhaust pipe 8 can detect the denitration exhaust gas, the standard detection can make the exhaust gas discharge by opening the exhaust valve 801, and the non-compliance detection can control the circulating fan 10 to work, the exhaust gas is introduced into the processing box 1 through the connecting pipe 9 and the backflow pipe 11 again, which facilitates the cyclic denitration.

[0030] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A boiler denitration circulating treatment device, comprising a treatment box (1), a control panel (2) is fixedly installed on the front face of the treatment box (1), characterized in that: The processing box (1) one side fixed mounting liquid storage tank (3), the liquid storage tank (3) top fixed mounting water pump (4), the processing box (1) inner wall bottom is provided with blowdown (5), the processing box (1) inner wall is provided with filter screen (6), the processing box (1) inside fixed mounting is spouted frame (7), the processing box (1) top is provided with exhaust pipe (8), the exhaust pipe (8) one side fixed connection has connecting pipe (9), the connecting pipe (9) one end fixed connection has circulating fan (10), the circulating fan (10) one side fixed connection has backflow pipe (11).

2. The boiler denitration circulating treatment device according to claim 1, characterized in that: The liquid storage tank (3) includes liquid inlet (301), air inlet (302), heat exchange pipe (303) and exhaust (304), the liquid storage tank (3) top is provided with liquid inlet (301), the liquid storage tank (3) top is provided with air inlet (302), the liquid storage tank (3) inside is provided with heat exchange pipe (303), the liquid storage tank (3) bottom is provided with exhaust (304), the heat exchange pipe (303) is communicated with air inlet (302) and exhaust (304), the heat exchange pipe (303) is provided as spiral shape, the exhaust (304) is communicated with processing box (1).

3. The boiler denitration circulating treatment device according to claim 1, characterized in that: The water pump (4) is electrically connected with the control panel (2) through wires, and the water pump (4) is communicated with the inside of the liquid storage tank (3) through the water pipe.

4. The boiler denitration circulating treatment device according to claim 1, characterized in that: The spray frame (7) includes liquid injection port (701), shunt pipe (702), spray head (703) and liquid guide pipe (704), one side of the spray frame (7) is provided with liquid injection port (701), the inside of the spray frame (7) is provided with shunt pipe (702), the bottom of the shunt pipe (702) is provided with spray head (703), the spray frame (7) is provided with liquid guide pipe (704), the spray frame (7) is provided with a plurality of, the spray frame (7) is communicated through the liquid guide pipe (704), the liquid injection port (701) is connected with the water pump (4) through the water pipe.

5. The boiler denitration circulating treatment device according to claim 4, characterized in that: The spray head (703) is provided with a plurality of, the spray head (703) is uniformly and symmetrically distributed on the bottom of the shunt pipe (702).

6. The boiler denitration circulating treatment device according to claim 1, characterized in that: The exhaust pipe (8) includes exhaust valve (801) and air outlet (802), the exhaust pipe (8) is fixedly installed with exhaust valve (801), one end of the exhaust valve (801) is provided with air outlet (802), the exhaust pipe (8) is fixedly installed with gas detector inside, the exhaust pipe (8) is connected with the circulating fan (10) through the connecting pipe (9).

7. The boiler denitration circulating treatment device according to claim 1, characterized in that: The circulating fan (10) is electrically connected with the control panel (2) through wires, the circulating fan (10) is connected with one side of the bottom of the processing box (1) through the backflow pipe (11), the backflow pipe (11) is provided with a gas valve at the connection with the processing box (1).

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