Waste gas purification device for steel pipe production

Abstract

The utility model discloses a waste gas purification device for steel pipe production in the technical field of waste gas purification, which comprises a body, a dust removal box, a support plate, a first reaction tank and a second reaction tank, the dust removal box is fixedly connected to the left side of the top of an inner cavity of the body, and the support plate is fixedly connected to the middle of the left side wall of the inner cavity of the body; the first reaction tank is fixedly connected to the middle of the right side wall of an inner cavity of the body, the second reaction tank is fixedly connected to the middle of the bottom of the inner cavity of the body, filter plates are inserted into the left side and the right side between the top and the bottom of the inner side wall of the dust removal box, and an activated carbon plate is inserted into the middle between the top and the bottom of the inner side wall of the dust removal box; the waste gas purification device for steel pipe production has the advantages that the structural design is reasonable, various purification modes are integrated, waste gas can be sufficiently purified, deposited reactants are effectively prevented from blocking the desulfurization tank, and the purification effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification, in particular to a waste gas purification device for steel pipe production. Background Art

[0002] During the steel pipe production process, a large amount of nitrogen oxides will be produced during the combustion process. At the same time, the sulfur-containing fuel used as fuel will also produce toxic gas sulfur dioxide and a large amount of particulate matter, causing serious pollution to air quality and atmosphere.

[0003] During the production process of existing steel pipes, a variety of mixed harmful gases will be generated. The existing purification devices purify the waste gas through simple filtration and adsorption or a single method, resulting in incomplete waste gas purification. When the existing waste gas purification device uses calcium oxide for desulfurization, the deposited reactants are easy to clog the desulfurization tank, affecting the purification effect. For this reason, we propose a waste gas purification device for steel pipe production. Utility Model Content

[0004] The purpose of the utility model is to provide a waste gas purification device for steel pipe production, so as to solve the problem raised in the above background technology that the existing steel pipe will produce a variety of mixed harmful gases during the production process, the existing purification device uses simple filtration and adsorption or a single method to purify the waste gas, resulting in incomplete waste gas purification, and when the existing waste gas purification device uses calcium oxide for desulfurization, the deposited reactants are easy to clog the desulfurization tank, affecting the purification effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas purification device for steel pipe production, comprising a main body, a dust removal box, a support plate, a first reaction tank and a second reaction tank, the dust removal box being fixedly connected to the left side of the top of the inner cavity of the main body, the support plate being fixedly connected to the middle of the left side wall of the inner cavity of the main body, the first reaction tank being fixedly connected to the middle of the right side wall of the inner cavity of the main body, the second reaction tank being fixedly connected to the middle of the bottom of the inner cavity of the main body, filter plates being inserted on both sides between the top and the bottom of the inner side wall of the dust removal box, an activated carbon plate being inserted in the middle between the top and the bottom of the inner side wall of the dust removal box, a flow controller being fixedly connected to the right side of the bottom of the dust removal box, a second fan being fixedly connected to the lower side of the right side wall of the dust removal box, an output end of the second fan being connected to a heater through a pipeline, the top left side of the support plate being fixedly connected to a liquid ammonia storage tank, and the top middle of the support plate being fixedly connected to A first water pump is connected, an evaporator is fixedly connected to the right side of the top of the support plate, the output end of the evaporator is connected to a mixer through a pipeline, an ammonia spray head is fixedly connected to the left side of the inner wall of the first reaction tank, a rectifier is fixedly connected between the upper sides of the inner wall of the first reaction tank, a catalytic plate is fixedly connected between the lower sides of the inner wall of the first reaction tank, a demister is fixedly connected between the upper sides of the inner wall of the second reaction tank, a spray head is fixedly connected between the middle of the inner wall of the second reaction tank, a second water pump is fixedly connected to the middle of the bottom of the inner cavity of the body, a calcium oxide liquid tank is fixedly connected to the left side of the bottom of the inner cavity of the body, a motor is fixedly connected to the bottom of the inner cavity of the second reaction tank, a stirring scraper is fixedly connected to the output end of the motor, a solenoid valve is plugged into the lower right side of the outer wall of the second reaction tank, the output end flange of the solenoid valve is connected to the exhaust pipe, and a third fan is fixedly connected to the left side of the bottom of the dust removal box.

[0006] As a further description of the above technical solution:

[0007] The dust removal box is connected to the first reaction tank via a pipeline, and the first reaction tank is connected to the second reaction tank via a pipeline.

[0008] As a further description of the above technical solution:

[0009] A protection box is fixedly connected to the middle of the upper side of the left side wall of the main body, and a first fan is fixedly connected to the inner side wall of the protection box.

[0010] As a further description of the above technical solution:

[0011] The first water pump is connected to the liquid ammonia storage tank via a pipeline, and the input end of the evaporator is connected to the output ends of the flow controller and the heater via pipelines respectively.

[0012] As a further description of the above technical solution:

[0013] The input end of the second water pump is connected to the output end of the calcium oxide liquid tank through a pipeline, and the exhaust pipe passes through the lower right side of the inner side wall of the body and extends to the outside thereof.

[0014] As a further description of the above technical solution:

[0015] A controller is fixedly connected to the middle of the right side of the front side wall of the main body, and the controller is electrically connected to the first fan, the flow controller, the second fan, the heater, the first water pump, the evaporator, the mixer, the defogger, the second water pump, the motor, the solenoid valve and the third fan.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The exhaust gas purification device for steel pipe production filters and adsorbs particulate matter in the exhaust gas by arranging filter plates and activated carbon plates in the dust removal box. The first water pump is used to pump the liquid ammonia from the liquid ammonia storage tank. The second fan cooperates with the heater to introduce liquid ammonia and hot air into the evaporator for evaporation. After mixing in the mixer, mist liquid ammonia is sprayed out from the ammonia spray head to mix with the exhaust gas. The nitrogen oxides in the exhaust gas are removed by catalytic plates. Then, the mist is removed by the demister in the second reaction tank. The second water pump introduces calcium oxide liquid into the spraying process. The sulfur dioxide in the exhaust gas is removed through the reaction. The device integrates multiple purification methods to fully purify the exhaust gas.

[0018] 2. The exhaust gas purification device for steel pipe production is equipped with a motor at the bottom of the second reaction tank to drive the stirring scraper to rotate, thereby accelerating the reaction between liquid calcium oxide and exhaust gas. At the same time, it continuously stirs and scrapes the reactants on the wall of the second reaction tank, and quickly discharges them through the pipeline by activating the solenoid valve, effectively avoiding the clogging of the desulfurization tank by the deposited reactants, and ensuring the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an exhaust gas purification device for steel pipe production proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of an exhaust gas purification device for steel pipe production proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of an exhaust gas purification device for steel pipe production proposed by the utility model;

[0022] Figure 4 This is an enlarged structural diagram of the first reaction tank of a waste gas purification device for steel pipe production proposed in this utility model

[0023] Figure 5This utility model proposes a waste gas purification device for steel pipe production Figure 2 Enlarged structural diagram at point A in the middle.

[0024] In the figure: 100, main body; 110, controller; 120, protection box; 130, first fan; 200, dust removal box; 210, filter plate; 220, activated carbon plate; 230, flow controller; 240, second fan; 250, heater; 300, support plate; 310, liquid ammonia storage tank; 320, first water pump; 330, evaporator; 340, mixer; 400, first reaction tank; 410, ammonia spray head; 420, rectifier; 430, catalytic plate; 500, second reaction tank; 510, demister; 520, spray head; 530, second water pump; 540, calcium oxide liquid tank; 550, motor; 560, stirring scraper; 570, solenoid valve; 580, exhaust pipe; 590, third fan. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] The utility model provides a waste gas purification device for steel pipe production, which integrates multiple purification methods and can fully purify the waste gas, effectively avoiding the clogging of the desulfurization tank by the deposited reactants, and ensuring the purification effect. Figure 1-5 , including a body 100, a dust removal box 200, a support plate 300, a first reaction tank 400 and a second reaction tank 500;

[0029] Please refer again Figure 1-5 The main body 100 is used to connect and fix the dust removal box 200, the support plate 300, the first reaction tank 400 and the second reaction tank 500.

[0030] Please refer again Figure 2 Filter plates 210 are inserted on both sides of the left and right sides between the top and bottom of the inner wall of the dust removal box 200, and an activated carbon plate 220 is inserted in the middle between the top and bottom of the inner wall of the dust removal box 200. A flow controller 230 is fixedly connected to the right side of the bottom of the dust removal box 200, and a second fan 240 is fixedly connected to the lower side of the right side wall of the dust removal box 200. The output end of the second fan 240 is connected to the heater 250 through a pipe. The dust removal box 200 is fixedly connected to the left side of the top of the inner cavity of the body 100. The dust removal box 200 is used to connect and fix the filter plate 210 and the activated carbon plate 220. The filter plate 210 is used to filter particulate matter, and the activated carbon plate 220 is used to adsorb particulate matter. The flow controller 230 is used to control the output amount of liquid ammonia, and the heater 250 is used to heat the air.

[0031] Please refer again Figure 2 A liquid ammonia storage tank 310 is fixedly connected to the left side of the top of the support plate 300, a first water pump 320 is fixedly connected to the middle of the top of the support plate 300, an evaporator 330 is fixedly connected to the right side of the top of the support plate 300, and the output end of the evaporator 330 is connected to the mixer 340 through a pipeline. The support plate 300 is fixedly connected to the middle of the left side wall of the inner cavity of the main body 100. The support plate 300 is used to connect and support the liquid ammonia storage tank 310, the first water pump 320, the evaporator 330 and the mixer 340. The liquid ammonia storage tank is used to store liquid ammonia, the evaporator 330 is used to perform evaporation operation, and the mixer 340 is used to mix liquid ammonia and hot air.

[0032] Please refer again Figure 2An ammonia spray head 410 is fixedly connected to the left side of the inner wall of the first reaction tank 400, a rectifier 420 is fixedly connected between the upper sides of the inner walls of the first reaction tank 400, and a catalytic plate 430 is fixedly connected between the lower sides of the inner walls of the first reaction tank 400. The first reaction tank 400 is fixedly connected in the middle of the right side wall of the inner cavity of the main body 100. The first reaction tank 400 is used to connect and fix the ammonia spray head 410, the rectifier 420 and the catalytic plate 430. The ammonia spray head 410 is used to spray liquid nitrogen, and the catalytic plate 430 is used for catalysis.

[0033] Please refer again Figure 2 and Figure 5 A demister 510 is fixedly connected between the upper sides of the inner wall of the second reaction tank 500, a spray head 520 is fixedly connected between the middle of the inner wall of the second reaction tank 500, a second water pump 530 is fixedly connected to the middle of the inner bottom of the main body 100, a calcium oxide liquid tank 540 is fixedly connected to the left side of the inner bottom of the main body 100, a motor 550 is fixedly connected to the inner bottom of the second reaction tank 500, a stirring scraper 560 is fixedly connected to the output end of the motor 550, a solenoid valve 570 is plugged into the lower right side of the outer wall of the second reaction tank 500, and the output end flange of the solenoid valve 570 is connected to the exhaust pipe 5 80. A third fan 590 is fixedly connected to the left side of the bottom of the dust removal box 200. The second reaction tank 500 is fixedly connected in the middle of the bottom of the inner cavity of the main body 100. The second reaction tank 500 is used to connect and fix the second reaction tank 500, the spray head 520 and the motor 550. The spray head 520 is used to spray liquid calcium oxide. The second water pump 530 and the calcium oxide liquid tank 540 are used to extract the liquid calcium oxide. The motor 550 is used to drive the stirring scraper 560 to rotate. The stirring scraper 560 is used to stir and scrape the reactants on the second reaction tank 500. The solenoid valve 570 is used to extract the reactants.

[0034] To sum up: by arranging the filter plate 210 and the activated carbon plate 220 in the dust removal box 200, the particulate matter in the exhaust gas is filtered and adsorbed, the liquid ammonia storage tank 310 is introduced into the evaporator 330 through the first water pump 320, and the second fan 240 cooperates with the heater 250 to introduce the liquid ammonia and hot air into the evaporator 330 for evaporation, and after mixing through the mixer 340, the misted liquid ammonia is sprayed out from the ammonia spray head 410 to mix with the exhaust gas, and the nitrogen oxides therein are catalytically removed by the catalytic plate 430, and then the mist is removed by the demister 510 in the second reaction tank 500, and the second water pump 530 introduces the calcium oxide liquid into the spray, and the sulfur dioxide therein is removed through the reaction. Multiple purification methods are integrated into one, which can fully purify the exhaust gas.

[0035] Please refer again Figure 1 The dust removal box 200 is connected to the first reaction tank 400 through a pipeline, and the first reaction tank 400 is connected to the second reaction tank 500 through a pipeline.

[0036] Please refer again Figure 2-3 A protection box 120 is fixedly connected to the middle of the upper side of the left side wall of the main body 100, and a first fan 130 is fixedly connected to the inner wall of the protection box 120.

[0037] Please refer again Figure 2 The first water pump 320 is connected to the liquid ammonia storage tank 310 through a pipeline, and the input end of the evaporator 330 is connected to the output ends of the flow controller 230 and the heater 250 through pipelines.

[0038] Please refer again Figure 2 and Figure 4 The input end of the second water pump 530 is connected to the output end of the calcium oxide liquid tank 540 through a pipeline, and the exhaust pipe 580 passes through the lower right side of the inner wall of the body 100 and extends to the outside thereof.

[0039] Please refer again Figure 1-5 A controller 110 is fixedly connected to the middle of the right side of the front side wall of the main body 100, and the controller 110 is electrically connected to the first fan 130, the flow controller 230, the second fan 240, the heater 250, the first water pump 320, the evaporator 330, the mixer 340, the defogger 510, the second water pump 530, the motor 550, the solenoid valve 570 and the third fan 590;

[0040] In summary: by setting a motor 550 at the bottom of the second reaction tank 500 to drive the stirring scraper 560 to rotate, the reaction of liquid calcium oxide with the exhaust gas is accelerated, and at the same time, the reactants on the wall of the second reaction tank 500 are continuously stirred and scraped off, and the reactants are quickly discharged through the pipeline by starting the solenoid valve 570, effectively avoiding the deposited reactants from clogging the desulfurization tank and ensuring the purification effect.

[0041] During specific use, personnel in this technical field introduce the exhaust gas from the first fan 130 into the dust removal box 200, the filter plate 210 and the activated carbon plate 220 filter and adsorb the particulate matter in the exhaust gas, and the exhaust gas enters the first reaction tank 400, and the liquid ammonia storage tank 310 is introduced by the first water pump 320. The second fan 240 cooperates with the heater 250 to introduce the liquid ammonia and hot air into the evaporator 330 for evaporation, and after mixing through the mixer 340, mist liquid ammonia is sprayed out from the ammonia spray head 410 to mix with the exhaust gas, and the nitrogen oxides therein are catalytically removed by the catalytic plate 430. Then the exhaust gas is introduced into the second reaction tank 500, the demister 510 performs demisting, and the second water pump 530 introduces the calcium oxide liquid into the spray, and the sulfur dioxide therein is removed through the reaction. The solenoid valve 570 is started to discharge the reactant emulsion, and the third fan 590 is started to discharge the clean gas.

[0042] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An exhaust gas purification device for steel pipe production, characterized by: The invention comprises a body (100), a dust removal box (200), a support plate (300), a first reaction tank (400) and a second reaction tank (500), wherein the dust removal box (200) is fixedly connected to the left side of the top of the inner cavity of the body (100), the support plate (300) is fixedly connected to the middle of the left side wall of the inner cavity of the body (100), the first reaction tank (400) is fixedly connected to the middle of the right side wall of the inner cavity of the body (100), the second reaction tank (500) is fixedly connected to the middle of the bottom of the inner cavity of the body (100), and the left and right sides between the top and bottom of the inner wall of the dust removal box (200) are inserted. A filter plate (210) is connected, an activated carbon plate (220) is inserted between the top and bottom of the inner wall of the dust removal box (200), a flow controller (230) is fixedly connected to the right side of the bottom of the dust removal box (200), a second fan (240) is fixedly connected to the lower side of the right side wall of the dust removal box (200), and the output end of the second fan (240) is connected to the heater (250) through a pipeline, a liquid ammonia storage tank (310) is fixedly connected to the left side of the top of the support plate (300), a first water pump (320) is fixedly connected to the middle of the top of the support plate (300), and the top of the support plate (300) is fixedly connected to the left side of the top of the support plate (300). An evaporator (330) is fixedly connected to the right side, and the output end of the evaporator (330) is connected to a mixer (340) through a pipeline. An ammonia spray head (410) is fixedly connected to the left side of the inner wall of the first reaction tank (400). A rectifier (420) is fixedly connected between the upper sides of the inner wall of the first reaction tank (400). A catalytic plate (430) is fixedly connected between the lower sides of the inner wall of the first reaction tank (400). A demister (510) is fixedly connected between the upper sides of the inner wall of the second reaction tank (500). A spray head (520) is fixedly connected between the middle of the inner wall of the second reaction tank (500). ), a second water pump (530) is fixedly connected to the middle of the bottom of the inner cavity of the body (100), a calcium oxide liquid tank (540) is fixedly connected to the left side of the bottom of the inner cavity of the body (100), a motor (550) is fixedly connected to the bottom of the inner cavity of the second reaction tank (500), an output end of the motor (550) is fixedly connected to a stirring scraper (560), a solenoid valve (570) is plugged into the lower right side of the outer wall of the second reaction tank (500), an output end flange of the solenoid valve (570) is connected to an exhaust pipe (580), and a third fan (590) is fixedly connected to the left side of the bottom of the dust removal box (200).

2. The exhaust gas purification device for steel pipe production according to claim 1, characterized in that: The dust removal box (200) is connected to the first reaction tank (400) via a pipeline, and the first reaction tank (400) is connected to the second reaction tank (500) via a pipeline.

3. The exhaust gas purification device for steel pipe production according to claim 1, characterized in that: A protection box (120) is fixedly connected to the middle of the upper side of the left side wall of the body (100), and a first fan (130) is fixedly connected to the inner side wall of the protection box (120).

4. The exhaust gas purification device for steel pipe production according to claim 1, characterized in that: The first water pump (320) is connected to the liquid ammonia storage tank (310) via a pipeline, and the input end of the evaporator (330) is connected to the output ends of the flow controller (230) and the heater (250) via pipelines.

5. The exhaust gas purification device for steel pipe production according to claim 1, characterized in that: The input end of the second water pump (530) is connected to the output end of the calcium oxide liquid tank (540) through a pipeline, and the exhaust pipe (580) passes through the lower right side of the inner wall of the body (100) and extends to the outside thereof.

6. The exhaust gas purification device for steel pipe production according to claim 1, characterized in that: A controller (110) is fixedly connected to the middle of the right side of the front side wall of the body (100), and the controller (110) is electrically connected to the first fan (130), the flow controller (230), the second fan (240), the heater (250), the first water pump (320), the evaporator (330), the mixer (340), the demister (510), the second water pump (530), the motor (550), the solenoid valve (570) and the third fan (590).

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