Pretreatment device for high-temperature flue gas

Abstract

The utility model discloses a high-temperature flue gas pretreatment device which comprises a cooling box, a heat exchange pipe is arranged in the cooling box, the heat exchange pipe is arranged in a snake shape, the head end of the heat exchange pipe extends outwards to be provided with an air inlet pipe, the tail end of the heat exchange pipe extends to the outer side of the cooling box and is connected with a dust removal box, and a filter screen plate is arranged in the dust removal box. A rotating shaft is arranged at the top of the dust removal box through a bearing, a rotating assembly is arranged in cooperation with the rotating shaft, the rotating shaft extends to the position below the filter screen plate through the bearing and is provided with a scraping plate, a blowing pipe is arranged on the side edge of the rotating shaft and located above the filter screen plate, and an air conveying cavity communicated with the blowing pipe is formed in the rotating shaft; according to the high-temperature flue gas pretreatment device, effective cooling and dust filtering in the high-temperature flue gas pretreatment process can be achieved, and meanwhile flue gas energy can be effectively utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas treatment technical field more specifically, it relates to a kind of pretreatment device of high-temperature flue gas. BACKGROUND

[0002] More flue gas will be generated in industrial production and processing process, especially in the industry involving high-temperature treatment, combustion reaction or chemical reaction, such as power, metallurgy, chemical industry, building materials and other industries. These flue gas usually contains dust, harmful gases (such as sulfur oxides, nitrogen oxides, heavy metals, etc.) and other pollutants, which will have serious impact on the environment and human health if not properly treated before discharge.

[0003] The flue gas has a high temperature when it is discharged, so it needs to be cooled before the chemical reaction purification of harmful substances;

[0004] The Chinese patent document with publication number CN215876827U discloses a high-temperature flue gas pretreatment device, which realizes the cooling and pretreatment of flue gas by injecting a reducing agent into the flue gas conveying pipeline.

[0005] However, the above scheme cannot effectively utilize the high-temperature energy in the flue gas, and cannot effectively remove the dust in the flue gas during the pretreatment process. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the problems existing in the prior art, the utility model provides a pretreatment device for high-temperature flue gas to solve the technical problems of poor utilization of high-temperature energy in flue gas and poor dust removal effect in the prior art mentioned in the background.

[0008] (II) Technical solutions

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0010] The utility model relates to a kind of high-temperature flue gas's pre-treatment device, including cooling tank, heat exchange pipe is provided in the cooling tank, the heat exchange pipe is serpentine arrangement, the first end of the heat exchange pipe extends outwardly and is provided with inlet pipe, and tail end extends to the outside of cooling tank and is connected with dust removal tank, filter screen is provided in the dust removal tank, the top of the dust removal tank is provided with rotating shaft by bearing, and rotating assembly is arranged in cooperation with rotating shaft, the rotating shaft is extended below filter screen by bearing and is provided with scraper, the side of the rotating shaft and above filter screen is provided with purging pipe, the rotating shaft is provided with gas supply cavity in intercommunication purging pipe, the top of the gas supply cavity is connected with gas supply pipe by sealing bearing, the tail end of the gas supply pipe is provided with gas supply equipment, wherein gas supply equipment can be selected high pressure fan or high pressure gas pump and other airflow driving equipment, the top of dust removal tank is provided with exhaust pipe.

[0011] The utility model further sets up, be provided with inlet pipe and outlet pipe on the cooling tank, the inlet pipe is located at one end of heat exchange pipe connection dust removal tank, the outlet pipe is located at one end of inlet pipe, and water inlet and water outlet in cooling tank are realized by inlet pipe and outlet pipe.

[0012] The utility model further sets up, a plurality of heat exchange fins are uniformly provided on the heat exchange pipe, the heat exchange effect between heat exchange pipe and water flow circulating in cooling tank can be improved by heat exchange fin, and the cooling effect of high-temperature flue gas is improved.

[0013] The utility model further sets up, rotating assembly includes first motor, the first motor is arranged on dust removal tank, and synchronous belt drive structure is arranged between the output of first motor and the top of rotating shaft, starts first motor, the rotating shaft is controlled to rotate by the cooperation of first motor and synchronous belt drive structure, so as to drive scraper to rotate by rotating shaft, and the bottom end of filter screen is scraped and cleaned.

[0014] The utility model further sets up, the bottom of dust removal tank is provided with dust exhaust pipe, valve is provided on the dust exhaust pipe, dust intercepted in dust removal tank is conveniently discharged outward by dust exhaust pipe, and valve is used to control the opening and closure of dust exhaust pipe.

[0015] The utility model further sets up, dust guide pipe is arranged at the bottom bending portion of heat exchange pipe, dust collecting tank is arranged at the bottom of dust guide pipe, dust intercepted in heat exchange pipe is conveniently guided downwards into dust collecting tank and collected.

[0016] The utility model further sets up, dust exhaust tank is arranged at the bottom of dust collecting tank, dust exhaust assembly is arranged in dust exhaust tank, and sealing door is arranged at the tail end of dust exhaust tank, dust collected by dust collecting tank is conveniently discharged outward by dust exhaust tank, and cleaning is realized.

[0017] The utility model further sets up, the dust discharging component includes spiral material discharging shaft, spiral material discharging shaft is installed in the dust discharging box through bearing, the outside wall of dust discharging box is provided with second motor on cooperation spiral material discharging shaft, starts second motor, can control spiral material discharging shaft rotation through second motor, thereby controls the dust in dust discharging box and exports, realizes the cleaning of dust in dust collecting box.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the utility model provides a kind of high-temperature flue gas's pretreatment device, with following beneficial effects:

[0020] 1, the utility model discloses a cooling tank can be discharged by setting high-temperature flue gas through air inlet pipe and is transported into the heat exchange pipe in cooling tank, cold water is transported into cooling tank by water inlet pipe simultaneously, and is exported by water outlet pipe, so that flowing cold water is contacted with heat exchange pipe, to realize the cooling of flue gas in heat exchange pipe, to facilitate subsequent flue gas processing, simultaneously, high-temperature flue gas in heat exchange pipe can heat the water flow in heat exchange tank, to be used for production and life needs, improve the utilization of heat energy.

[0021] 2, simultaneously, the utility model discloses dust guide pipe is provided at the bottom end bending of heat exchange pipe, and dust collecting box is provided at the bottom end of dust guide pipe, so, due to the serpentine setting of heat exchange pipe, part dust will be intercepted in heat exchange pipe, this part dust will eventually fall to bottom end bending, and is collected by descending to dust collecting box in dust guide pipe, when needing to discharge dust, open seal door, start second motor, can control spiral material discharging shaft rotation by second motor, dust in dust collecting box will fall to dust discharging box, and under the action of spiral material discharging shaft, export to realize the cleaning of dust.

[0022] 3, the utility model discloses dust removal tank, and the airflow after cooling is transported into dust removal tank, and is transported upwards, exports by exhaust pipe, in this process, dust in flue gas will be intercepted by filter screen, to realize the filtration of dust in flue gas, in this process, start first motor, can control the rotation of rotating shaft by the cooperation of first motor and synchronous belt transmission structure, to drive scraper rotation by rotating shaft, to scrape and clean the bottom end of filter screen, simultaneously, start gas supply equipment, so that airflow can be transported to gas conveying cavity by gas supply pipe, and is transported to blowing pipe by gas conveying cavity, so that airflow can be blown towards filter screen by blowing pipe, to make the airflow of downward reverse blowing filter screen, improve the cleaning effect of filter screen. ACCURACY

[0023] Figure 1 It is the whole structure diagram of a kind of high-temperature flue gas's pretreatment device in the utility model Figure 1 ;

[0024] Figure 2 The whole structure schematic diagram of a high-temperature flue gas pretreatment device in the utility model Figure 2

[0025] Figure 3 The internal structure section view schematic diagram of the cooling box in the utility model

[0026] Figure 4 The internal structure section view schematic diagram of the dust discharging box in the utility model

[0027] Figure 5 The internal structure section view schematic diagram of the dust removal box in the utility model

[0028] Figure 6 The connection structure section view schematic diagram between the stirring shaft, the scraper, the blowing pipe and the gas supply pipe in the utility model.

[0029] In the figure: 1, cooling box; 2, heat exchange pipe; 3, air inlet pipe; 4, dust removal box; 5, filter screen; 6, rotating shaft; 7, scraper; 8, blowing pipe; 9, gas conveying cavity; 10, gas supply pipe; 11, gas supply equipment; 12, water inlet pipe; 13, water outlet pipe; 14, heat exchange fin; 15, first motor; 16, synchronous belt transmission structure; 17, dust discharging pipe; 18, valve; 19, dust guide pipe; 20, dust collecting box; 21, dust discharging box; 22, sealing door; 23, spiral discharging shaft; 24, second motor. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled in the art to which the present application belongs.

[0032] In the present application, unless otherwise specified, the directions such as "up, down" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions. Similarly, for the convenience of understanding and description, "left, right" are generally directed to the left and right shown in the drawings, and "inner, outer" are directed to the inner and outer relative to the contour of each component itself, but the above direction words are not used to limit the present application.

[0033] Please refer to Figures 1-6 ​The utility model provides a kind of high-temperature flue gas's pre-treatment device, including cooling tank 1, heat exchange pipe 2 is provided in cooling tank 1, heat exchange pipe 2 is serpentine setting, the first end of heat exchange pipe 2 extends outward and is provided with inlet pipe 3, and tail end extends to the outside of cooling tank 1 and is connected with dust removal tank 4, dust removal tank 4 is provided with filter screen plate 5, the top of dust removal tank 4 is provided with rotating shaft 6 by bearing, and rotating assembly is set by cooperation rotating shaft 6, rotating shaft 6 is set with scraper 7 by bearing and extends to the below of filter screen plate 5, the side of rotating shaft 6 and above filter screen plate 5 is provided with blowing pipe 8, rotating shaft 6 is provided with gas supply cavity 9 by being connected blowing pipe 8, the top of gas supply cavity 9 is connected with gas supply pipe 10 by sealing bearing, the tail end of gas supply pipe 10 is provided with gas supply equipment 11, the top of dust removal tank 4 is provided with exhaust pipe.

[0034] Please refer to Figures 1-6 , as a kind of embodiment of cooling tank 1: cooling tank 1 is provided with inlet pipe 12 and outlet pipe 13, inlet pipe 12 is located at the one end of heat exchange pipe 2 and dust removal tank 4, outlet pipe 13 is located at the one end of inlet pipe 3, the water inlet and outlet in cooling tank 1 are realized by inlet pipe 12 and outlet pipe 13.

[0035] Please refer to Figures 1-6 , as a kind of embodiment of heat exchange pipe 2: heat exchange pipe 2 is uniformly provided with a plurality of heat exchange fins 14, the heat exchange effect between heat exchange pipe 2 and the water flow circulating in cooling tank 1 can be improved by heat exchange fin 14, and the cooling effect of high-temperature flue gas is improved.

[0036] Please refer to Figures 1-6 , as a kind of embodiment of rotating assembly: rotating assembly includes first motor 15, first motor 15 is arranged on dust removal tank 4, and synchronous belt drive structure 16 is arranged between the output end of first motor 15 and the top end of rotating shaft 6, by the cooperation of first motor 15 and synchronous belt drive structure 16, the rotation of rotating shaft 6 can be controlled by starting first motor 15, so that the rotation of scraper 7 is driven by rotating shaft 6, and the bottom end of filter screen plate 5 is scraped and cleaned.

[0037] Please refer to Figures 1-6 , as a kind of embodiment of dust removal tank 4: dust removal tank 4 is provided with dust exhaust pipe 17 at the bottom end, valve 18 is arranged on dust exhaust pipe 17, dust intercepted in dust removal tank 4 is conveniently discharged outward through dust exhaust pipe 17, and valve 18 is used to control the opening and closing of dust exhaust pipe 17.

[0038] Please refer to Figures 1-6 , as a kind of embodiment of heat exchange pipe 2: dust guide pipe 19 is arranged at the bottom end of heat exchange pipe 2, dust guide pipe 19 is provided with dust collection tank 20 at the bottom end, so that the dust intercepted in heat exchange pipe 2 can be guided downward into dust collection tank 20 to realize collection.

[0039] Please refer toFigures 1-6 As an embodiment of the dust collecting box 20: the bottom end of the dust collecting box 20 is provided with a dust discharging box 21, the dust discharging box 21 is provided with a dust discharging assembly, and the tail end of the dust discharging box 21 is provided with a sealing door 22, so that the dust collected by the dust collecting box 20 can be discharged outward through the dust discharging box 21, and cleaning is realized;

[0040] Specifically, the dust discharging assembly includes a spiral discharging shaft 23, the spiral discharging shaft 23 is installed in the dust discharging box 21 through a bearing, a second motor 24 is arranged on the outer side wall of the dust discharging box 21 in cooperation with the spiral discharging shaft 23, the second motor 24 is started, the rotation of the spiral discharging shaft 23 can be controlled through the second motor 24, so that the dust in the dust discharging box 21 is discharged outward, and the cleaning of the dust in the dust collecting box 20 is realized.

[0041] In summary:

[0042] The utility model discloses a cooling box 1 can be discharged high temperature flue gas through the air inlet pipe 3 and is transported to the heat exchange pipe 2 in cooling box 1, simultaneously, the cold water is transported to cooling box 1 through the water inlet pipe 12, and is discharged through the water outlet pipe 13, make the flowing cold water and heat exchange pipe 2 contact, thereby realize the cooling of the flue gas in heat exchange pipe 2, in order to the processing of subsequent flue gas, simultaneously, the high temperature flue gas in heat exchange pipe 2 can heat the water flow in heat exchange box, thereby for the production and life demand, improve the utilization of heat energy;

[0043] Meanwhile, the utility model discloses a dust guide pipe 19 is provided with dust collecting box 20 at the bottom end of the dust guide pipe 19, like this, because the serpentine setting of heat exchange pipe 2, part dust will be intercepted in heat exchange pipe 2, this part dust will eventually fall to the bottom bending, through the dust guide pipe 19 and drop to the dust collecting box 20 and collect, when need to discharge dust, open the sealing door 22, start second motor 24, through second motor 24 can control spiral discharging shaft 23 rotates, the dust in dust collecting box 20 will fall to dust discharging box 21, and under the action of spiral discharging shaft 23, discharge outward and realize the cleaning of dust.

[0044] The utility model discloses a dust removal box 4, the airflow after cooling is transported to dust removal box 4, and is transported upward, and is discharged through the exhaust pipe, in this process, the dust in flue gas will be intercepted by filter screen 5, thereby realize the filtration of dust in flue gas, in this process, start first motor 15, through the cooperation of first motor 15 and synchronous belt drive structure 16 can control the rotation of the rotating shaft 6, thereby drive scraper 7 to rotate through the rotating shaft 6, and scrape and clean the bottom end of filter screen 5, simultaneously, start gas supply equipment 11, so that the airflow can be transported to the gas supply pipe 10 through the gas supply pipe 10, and be transported to the blowing pipe 8 through the gas supply cavity 9, so that the airflow can be blown to filter screen 5 through blowing pipe 8, thereby making the downward airflow reverse blowing filter screen 5, improve the cleaning effect of filter screen 5.

[0045] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be described one by one. In the above, when referring to the fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and deformations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0046] In all the above-mentioned solutions, when referring to the operation of the electrical element, it is controlled by the controller unless otherwise specified. Since the controller is matched with the commonly used device, its control principle and circuit connection belong to the existing known and mature technology, and the specific circuit structure will not be described here.

[0047] In all the above-mentioned solutions, when referring to the motor, it can be matched with the speed reducer if necessary. The connection structure and working principle between the motor and the speed reducer are the existing known technology, and the utility model will not be described.

[0048] In all the above-mentioned solutions, when referring to the connection between the solar panel and the battery, the necessary accessories such as the inverter, the battery charging controller, the cable, the fuse and the bracket can be matched. The control principle and the circuit connection belong to the existing known and mature technology, and the specific circuit structure will not be described here.

Claims

1. A device for pre-treatment of high-temperature flue gases, comprising a cooling box (1), characterised in that: The cooling box (1) is provided with heat exchange pipes (2), the heat exchange pipes (2) are arranged in a serpentine shape, the first end of the heat exchange pipes (2) extends outward and is provided with an air inlet pipe (3), and the tail end extends to the outside of the cooling box (1) and is connected with a dust removal box (4), the dust removal box (4) is provided with a filter screen (5) inside, the top of the dust removal box (4) is provided with a rotating shaft (6) through a bearing, and a rotating assembly is arranged in cooperation with the rotating shaft (6), the rotating shaft (6) extends below the filter screen (5) through a bearing and is provided with a scraper (7), the side of the rotating shaft (6) and above the filter screen (5) is provided with a blowing pipe (8), the rotating shaft (6) is provided with a gas conveying cavity (9) inside and in communication with the blowing pipe (8), the top of the gas conveying cavity (9) is connected with a gas supply pipe (10) through a sealing bearing, and the tail end of the gas supply pipe (10) is provided with a gas supply device (11).

2. A device for pre-treatment of high-temperature flue gases according to claim 1, characterised in that: The cooling box (1) is provided with a water inlet pipe (12) and a water outlet pipe (13), the water inlet pipe (12) is located at one end of the heat exchange pipe (2) connected with the dust removal box (4), and the water outlet pipe (13) is located at one end of the air inlet pipe (3).

3. A device for pre-treatment of high temperature flue gases according to claim 1, characterized in that: The heat exchange pipe (2) is uniformly provided with a plurality of heat exchange fins (14).

4. A device for pre-treatment of high temperature flue gases according to claim 1, characterized in that: The rotating assembly comprises a first motor (15), the first motor (15) is arranged on the dust removal box (4), and a synchronous belt transmission structure (16) is arranged between the output end of the first motor (15) and the top end of the rotating shaft (6).

5. A device for pre-treatment of high temperature flue gases according to claim 1, characterized in that: The bottom end of the dust removal box (4) is provided with a dust discharge pipe (17), and the dust discharge pipe (17) is provided with a valve (18).

6. A device for pre-treatment of high-temperature flue gases according to any of claims 1-5, characterised in that: The bottom end of the heat exchange pipe (2) is provided with a dust guide pipe (19), and the bottom end of the dust guide pipe (19) is provided with a dust collecting box (20).

7. A device for pre-treatment of high temperature flue gases according to claim 6, characterized in that: The bottom end of the dust collecting box (20) is provided with a dust discharging box (21), the dust discharging box (21) is provided with a dust discharging assembly, and the tail end of the dust discharging box (21) is provided with a sealing door (22).

8. A device for pre-treatment of high temperature flue gases according to claim 7, characterised in that: The dust discharging assembly comprises a spiral discharging shaft (23), the spiral discharging shaft (23) is mounted in the dust discharging box (21) through a bearing, and a second motor (24) is arranged on the outer wall of the dust discharging box (21) in cooperation with the spiral discharging shaft (23).

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