Flue gas pretreatment device

Abstract

The utility model provides a flue gas pretreatment device, and belongs to the technical field of flue gas pretreatment devices. The flue gas pretreatment device comprises a connecting pipe, a flue gas inlet pipe, a desulfurization plate, a three-way pipe, a first electromagnetic valve, a flue gas discharge pipe, a flue gas analyzer, an induced draft fan, a treatment pipe, a spraying mechanism, a waste liquid discharge mechanism, a purification mechanism and a re-purification mechanism, and the upper end of the connecting pipe is fixed to the lower end of the treatment pipe; according to the flue gas pretreatment device, when the activated carbon filter plate is cleaned or replaced, flue gas treatment does not need to be stopped, the flue gas treatment efficiency is improved, the activated carbon filter plate is convenient to disassemble and assemble, and in addition, the activated carbon filter plate is convenient to disassemble and assemble. When the activated carbon filter plate cannot be replaced or cleaned in time, the part of flue gas can be re-injected into the treatment pipe for re-purification treatment, so that the flue gas which does not reach the standard cannot be discharged, and better use experience is brought to a user.

Description

Technical Field

[0001] The present application relates to the technical field of flue gas pretreatment devices, and in particular to a flue gas pretreatment device. Background Art

[0002] After searching, the Chinese patent number is CN201821802582.5, a flue gas pretreatment device, including a treatment pipe, the bottom of the treatment pipe is fixedly connected to a connecting pipe, the bottom of the connecting pipe is fixedly connected to a connecting plate, both sides of the top of the connecting plate are threadedly connected to threaded rods, the top of the treatment pipe is fixedly connected to a smoke exhaust pipe, both sides of the top of the smoke exhaust pipe are fixedly connected to support rods, the top of the support rods is fixedly connected to a rain cover, and the bottom of the inner cavity of the treatment pipe is fixedly connected to a smoke inlet pipe. The flue gas pretreatment device is connected to the smoke inlet pipe through a connecting pipe, and is discharged through the air vents opened on the front of the smoke inlet pipe, so that the exhaust gas is located inside the treatment pipe, desulfurized by the desulfurization plate, and treated by the spray pipe and steering knuckle on the front of the solution tank so that the atomizing nozzle treats the exhaust gas. The generated waste liquid is collected by the water collection tank and discharged through the outlet pipe, thereby achieving the purpose of good treatment effect.

[0003] However, the above solution still has defects. Although the activated carbon filter plate is used to purify the flue gas, the activated carbon filter plate needs to be cleaned or replaced regularly, and the flue gas treatment needs to be stopped at this time, which reduces the flue gas treatment efficiency. The disassembly and assembly of the activated carbon filter plate is also too time-consuming and labor-intensive. In addition, when the activated carbon filter plate is not replaced or cleaned in time, the flue gas treated by the activated carbon filter plate often fails to meet the emission requirements, resulting in this part of the flue gas being discharged to pollute the environment, which brings a bad user experience. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a flue gas pretreatment device, which aims to improve the problem that although the flue gas is purified by using an activated carbon filter plate, the activated carbon filter plate needs to be cleaned or replaced regularly, and at this time the flue gas treatment needs to be stopped, which reduces the flue gas treatment efficiency, and the disassembly and assembly of the activated carbon filter plate is too time-consuming and labor-intensive. In addition, when the activated carbon filter plate is not replaced or cleaned in time, the flue gas treated by the activated carbon filter plate often fails to meet the emission requirements, resulting in this part of the flue gas being discharged and polluting the environment.

[0005] This application is implemented as follows:

[0006] The present application provides a flue gas pretreatment device, comprising a connecting pipe, a smoke inlet pipe, a desulfurization plate, a tee pipe, a first solenoid valve, a smoke exhaust pipe, a smoke analyzer, an induced draft fan, a treatment pipe, a spray mechanism, a waste liquid discharge mechanism, a purification mechanism, and a re-purification mechanism, wherein the upper end of the connecting pipe is fixed to the lower end of the treatment pipe, the bottom of the inner cavity of the treatment pipe is fixedly connected to the smoke inlet pipe, and the bottom of the smoke inlet pipe is communicated with the top end of the connecting pipe;

[0007] The smoke inlet pipe is provided with a ventilation groove, the interior of which is fixedly connected to the desulfurization plate, two tees are provided, the two tees are provided on the box body, the first solenoid valve is provided on the tees, the lower end of the smoke exhaust pipe is fixed to the main pipe of one of the tees, the flue gas analyzer is fixed to the outer wall of the smoke exhaust pipe, and the induced draft fan is fixed in one of the tees;

[0008] The spray mechanism is installed in the processing tube, and the arrangement of the spray mechanism realizes spraying of the flue gas;

[0009] The waste liquid discharge mechanism is installed on the smoke inlet pipe, and the waste liquid discharge mechanism is set to discharge the waste liquid into the treatment pipe;

[0010] The purification mechanism is installed between the two tee pipes. The setting of the purification mechanism can purify the exhaust gas, and the two processing chambers can realize continuous purification of the exhaust gas.

[0011] The re-purification mechanism is installed between the smoke exhaust pipe and the processing pipe. The re-purification mechanism is used to guide the smoke that has not been completely treated back into the processing pipe to achieve thorough purification of the smoke.

[0012] In one embodiment of the present application, a connecting plate is further included, and the connecting plate is fixed on the lower end of the connecting pipe.

[0013] In one embodiment of the present application, the spray mechanism includes a solution tank, a spray pipe, an atomizing nozzle and a liquid inlet pipe, the upper end of the smoke inlet pipe is fixed on the lower surface of the solution tank, the spray pipe is fixed on the outer wall of the solution tank and is communicated with the liquid outlet of the solution tank, the atomizing nozzle is arranged on the spray pipe, one end of the liquid inlet pipe is arranged on the solution tank, and the liquid inlet pipe passes through the treatment pipe.

[0014] In one embodiment of the present application, the waste liquid discharge mechanism includes a water collecting trough, a water outlet pipe and a stop valve, the water collecting trough is fixed on the outer wall of the smoke inlet pipe, one end of the water outlet pipe is arranged on the water collecting trough, the water outlet pipe passes through the treatment pipe, and the stop valve is arranged on the water outlet pipe.

[0015] In one embodiment of the present application, the purification mechanism includes a box body, a partition, an activated carbon filter plate and a buckle. The box body is installed between the two three-way pipes, the activated carbon filter plate is slidably inserted in the box body, and different parts of the buckle are respectively fixed on the activated carbon filter plate and the outer wall of the box body.

[0016] In one embodiment of the present application, the re-purification mechanism includes an air duct, a second solenoid valve, a one-way valve and a third solenoid valve. The air duct is installed between the smoke exhaust pipe and the treatment pipe. The second solenoid valve and the one-way valve are both arranged on the air duct. The third solenoid valve is arranged on the smoke exhaust pipe. The third solenoid valve is located above the flue gas analyzer.

[0017] In one embodiment of the present application, a rain cover is further included, and the rain cover is fixed to the upper end of the smoke exhaust pipe.

[0018] In one embodiment of the present application, four first solenoid valves are provided, and the four first solenoid valves are installed on different branches of the two three-way pipes.

[0019] The beneficial effect of the present application is that the flue gas pretreatment device obtained by the above design does not need to stop the treatment of the flue gas when cleaning or replacing the activated carbon filter plate, thereby improving the flue gas treatment efficiency and facilitating the disassembly and assembly of the activated carbon filter plate. In addition, when the activated carbon filter plate is not replaced or cleaned in time, this part of the flue gas will be re-injected into the treatment pipe for purification again to ensure that substandard flue gas will not be discharged, bringing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a flue gas pretreatment device provided in an embodiment of the present application;

[0022] Figure 2 A cross-sectional view of a processing tube provided for an embodiment of the present application;

[0023] Figure 3 A cross-sectional view of a tee pipe and a box provided in an embodiment of the present application;

[0024] Figure 4A schematic diagram of the three-dimensional structure of the purification mechanism provided in an embodiment of the present application.

[0025] In the figure: 110 - connecting pipe; 120 - connecting plate; 130 - smoke inlet pipe; 140 - desulfurization plate; 150 - spray mechanism; 151 - solution tank; 152 - spray pipe; 153 - atomizing nozzle; 154 - liquid inlet pipe; 160 - waste liquid discharge mechanism; 161 - water collection tank; 162 - water outlet pipe; 163 - stop valve; 170 - three-way pipe; 180 - first solenoid valve; 190 - purification mechanism; 1901 - housing; 1902 - partition; 1903 - activated carbon filter plate; 1904 - buckle; 191 - re-purification mechanism; 1911 - air duct; 1912 - second solenoid valve; 1913 - one-way valve; 1914 - third solenoid valve; 192 - exhaust pipe; 193 - flue gas analyzer; 194 - rain cover; 195 - induced draft fan; 196 - treatment pipe. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] Example

[0028] See also Figure 1 - Figure 4 The present application provides a technical solution: a flue gas pretreatment device, comprising a connecting pipe 110, a smoke inlet pipe 130, a desulfurization plate 140, a three-way pipe 170, a first solenoid valve 180, a smoke exhaust pipe 192, a smoke analyzer 193, an induced draft fan 195, a treatment pipe 196, a spray mechanism 150, a waste liquid discharge mechanism 160, a purification mechanism 190, and a re-purification mechanism 191. The upper end of the connecting pipe 110 is fixed to the lower end of the treatment pipe 196. The device also includes a connecting plate 120, which is fixed to the lower end of the connecting pipe 110. The arrangement of the connecting plate 120 facilitates the installation of the connecting pipe 110 and other pipelines. The bottom of the inner cavity of the treatment pipe 196 is fixedly connected to the smoke inlet pipe 130, and the bottom of the smoke inlet pipe 130 is communicated with the top of the connecting pipe 110.

[0029] A ventilation groove is provided on the smoke inlet pipe 130, and a desulfurization plate 140 is fixedly connected to the interior of the ventilation groove. Two tees 170 are provided, and the two tees 170 are arranged on the box body 1901. A first solenoid valve 180 is provided on the tees 170. The lower end of the exhaust pipe 192 is fixed to the main pipe of one of the tees 170. The flue gas analyzer 193 is fixed to the outer wall of the exhaust pipe 192. The induced draft fan 195 is fixed in one of the tees 170. A rain cover 194 is also included. The rain cover 194 is fixed to the upper end of the exhaust pipe 192. Four first solenoid valves 180 are provided, and the four first solenoid valves 180 are installed on different branches of the two tees 170.

[0030] The spray mechanism 150 is installed in the processing tube 196. The spray mechanism 150 is set to spray the flue gas. The spray mechanism 150 includes a solution tank 151, a spray pipe 152, an atomizing nozzle 153 and a liquid inlet pipe 154. The upper end of the smoke inlet pipe 130 is fixed to the lower surface of the solution tank 151. The spray pipe 152 is fixed to the outer wall of the solution tank 151 and communicates with the liquid outlet of the solution tank 151. The atomizing nozzle 153 is set on the spray pipe 152. One end of the liquid inlet pipe 154 is set on the solution tank 151, and the liquid inlet pipe 154 passes through the processing tube 196.

[0031] The waste liquid discharge mechanism 160 is installed on the smoke inlet pipe 130. The waste liquid discharge mechanism 160 is set to discharge the waste liquid into the treatment pipe 196. The waste liquid discharge mechanism 160 includes a water collection tank 161, a water outlet pipe 162 and a flow-stop valve 163. The water collection tank 161 is fixed to the outer wall of the smoke inlet pipe 130. One end of the water outlet pipe 162 is set on the water collection tank 161. The water outlet pipe 162 passes through the treatment pipe 196. The flow-stop valve 163 is set on the water outlet pipe 162.

[0032] The purification mechanism 190 is installed between the two tees 170. The configuration of the purification mechanism 190 purifies the exhaust gas, and the two processing chambers can achieve continuous purification of the exhaust gas. The purification mechanism 190 includes a box 1901, a partition 1902, an activated carbon filter plate 1903, and a buckle 1904. The box 1901 is installed between the two tees 170. The activated carbon filter plate 1903 is slidably inserted into the box 1901. Different parts of the buckle 1904 are respectively fixed to the activated carbon filter plate 1903 and the outer wall of the box 1901.

[0033] The re-purification mechanism 191 is installed between the smoke exhaust pipe 192 and the treatment pipe 196. The re-purification mechanism 191 is used to guide the incompletely treated flue gas back into the treatment pipe 196 to achieve thorough purification of the flue gas. The re-purification mechanism 191 includes an air guide pipe 1911, a second solenoid valve 1912, a one-way valve 1913 and a third solenoid valve 1914. The air guide pipe 1911 is installed between the smoke exhaust pipe 192 and the treatment pipe 196. The second solenoid valve 1912 and the one-way valve 1913 are both arranged on the air guide pipe 1911. The third solenoid valve 1914 is arranged on the smoke exhaust pipe 192. The third solenoid valve 1914 is above the flue gas analyzer 193.

[0034] Specifically, the working principle of the flue gas pretreatment device is as follows: when in use, the corresponding two first solenoid valves 180 of the four first solenoid valves 180 are opened, the second solenoid valve 1912 is closed, and the third solenoid valve 1914 is opened. The flue gas enters the smoke inlet pipe 130 through the connecting pipe 110 and is discharged through the ventilation slot opened on the front of the smoke inlet pipe 130, so that the exhaust gas is located inside the treatment pipe 196. The induced draft fan 195 works to guide the flue gas upward, desulfurizes through the desulfurization plate 140, and passes through the solution tank 151, the spray pipe 152, and the atomizing spray nozzle 153. The cooperation of the head 153 and the liquid inlet pipe 154 sprays the waste gas, and the waste liquid generated is collected by the water collection tank 161 and discharged through the outlet pipe 162. One of the activated carbon filter plates 1903 filters and purifies the rising waste gas, and finally discharges it through the exhaust pipe 192. When the flue gas analyzer 193 detects that the flue gas does not meet the emission requirements, the flue gas analyzer 193 transmits a signal to the control terminal, and the control terminal controls the second solenoid valve 1912 to open, the third solenoid valve 1914 to close, and the two opened solenoid valves 1914 of the four first solenoid valves 180 are closed. The first solenoid valve 180 is closed, and the two closed first solenoid valves 180 are opened. The flue gas that does not meet the emission requirements is introduced into the treatment pipe 196 again through the induced draft fan 195. At this time, another activated carbon filter plate 1903 treats the exhaust gas. When the flue gas analyzer 193 detects that the flue gas meets the emission requirements, the flue gas analyzer 193 transmits a signal to the control terminal. The control terminal controls the second solenoid valve 1912 to close and the third solenoid valve 1914 to open, thereby realizing continuous treatment of the flue gas. Then, the buckle 1904 is opened. Another activated carbon filter plate 1903 can be cleaned or replaced. When the flue gas pretreatment device cleans or replaces the activated carbon filter plate 1903, there is no need to stop the treatment of the flue gas, which improves the treatment efficiency of the flue gas and facilitates the disassembly and assembly of the activated carbon filter plate 1903. In addition, when the activated carbon filter plate 1903 is not replaced or cleaned in time, this part of the flue gas will be re-injected into the treatment tube 196 for purification again to ensure that substandard flue gas will not be discharged, giving users a better user experience.

[0035] It should be noted that the specific models and specifications of the first solenoid valve 180, the second solenoid valve 1912, the third solenoid valve 1914, the flue gas analyzer 193 and the induced draft fan 195 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0036] The power supply and principles of the first solenoid valve 180 , the second solenoid valve 1912 , the third solenoid valve 1914 , the flue gas analyzer 193 and the induced draft fan 195 are clear to those skilled in the art and are not described in detail here.

[0037] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

Claims

1. A flue gas pretreatment device, characterized in that: The invention comprises a connecting pipe (110), a smoke inlet pipe (130), a desulfurization plate (140), a three-way pipe (170), a first solenoid valve (180), a smoke exhaust pipe (192), a smoke analyzer (193), an induced draft fan (195), a treatment pipe (196), a spray mechanism (150), a waste liquid discharge mechanism (160), a purification mechanism (190), and a re-purification mechanism (191); the upper end of the connecting pipe (110) is fixed to the lower end of the treatment pipe (196); the bottom of the inner cavity of the treatment pipe (196) is fixedly connected to the smoke inlet pipe (130), and the bottom of the smoke inlet pipe (130) is communicated with the top end of the connecting pipe (110); The smoke inlet pipe (130) is provided with a ventilation groove, and the desulfurization plate (140) is fixedly connected to the interior of the ventilation groove. Two three-way pipes (170) are provided, and the two three-way pipes (170) are provided on the box body (1901). The first solenoid valve (180) is provided on the three-way pipe (170). The lower end of the smoke exhaust pipe (192) is fixed to the main pipe of one of the three-way pipes (170). The flue gas analyzer (193) is fixed to the outer wall of the smoke exhaust pipe (192). The induced draft fan (195) is fixed in one of the three-way pipes (170). The spray mechanism (150) is installed in the processing pipe (196), and the arrangement of the spray mechanism (150) enables spraying of the flue gas; The waste liquid discharge mechanism (160) is installed on the smoke inlet pipe (130), and the waste liquid discharge mechanism (160) is configured to discharge the waste liquid into the treatment pipe (196); The purification mechanism (190) is installed between the two three-way pipes (170). The arrangement of the purification mechanism (190) enables the waste gas to be purified, and the two processing chambers can achieve continuous purification of the waste gas. The re-purification mechanism (191) is installed between the exhaust pipe (192) and the treatment pipe (196). The re-purification mechanism (191) is used to guide the incompletely treated flue gas back into the treatment pipe (196) to achieve complete purification of the flue gas.

2. A flue gas pretreatment device according to claim 1, characterized in that: It also includes a connecting plate (120), which is fixed on the lower end of the connecting pipe (110).

3. The flue gas pretreatment device according to claim 1, characterized in that: The spray mechanism (150) includes a solution tank (151), a spray pipe (152), an atomizing nozzle (153) and a liquid inlet pipe (154); the upper end of the smoke inlet pipe (130) is fixed on the lower surface of the solution tank (151); the spray pipe (152) is fixed on the outer wall of the solution tank (151) and communicates with the liquid outlet of the solution tank (151); the atomizing nozzle (153) is arranged on the spray pipe (152); one end of the liquid inlet pipe (154) is arranged on the solution tank (151), and the liquid inlet pipe (154) passes through the treatment pipe (196).

4. The flue gas pretreatment device according to claim 1, characterized in that: The waste liquid discharge mechanism (160) includes a water collecting trough (161), a water outlet pipe (162) and a stop valve (163); the water collecting trough (161) is fixed on the outer wall of the smoke inlet pipe (130); one end of the water outlet pipe (162) is arranged on the water collecting trough (161); the water outlet pipe (162) passes through the treatment pipe (196); and the stop valve (163) is arranged on the water outlet pipe (162).

5. The flue gas pretreatment device according to claim 1, characterized in that: The purification mechanism (190) includes a box (1901), a partition (1902), an activated carbon filter plate (1903) and a buckle (1904), wherein the box (1901) is installed between the two three-way pipes (170), the activated carbon filter plate (1903) is slidably inserted into the box (1901), and different parts of the buckle (1904) are respectively fixed on the outer wall of the activated carbon filter plate (1903) and the box (1901).

6. The flue gas pretreatment device according to claim 1, characterized in that: The re-purification mechanism (191) includes an air duct (1911), a second solenoid valve (1912), a one-way valve (1913) and a third solenoid valve (1914); the air duct (1911) is installed between the smoke exhaust pipe (192) and the processing pipe (196); the second solenoid valve (1912) and the one-way valve (1913) are both arranged on the air duct (1911); the third solenoid valve (1914) is arranged on the smoke exhaust pipe (192); and the third solenoid valve (1914) is located above the flue gas analyzer (193).

7. The flue gas pretreatment device according to claim 1, characterized in that: It also includes a rain cover (194), which is fixed to the upper end of the smoke exhaust pipe (192).

8. The flue gas pretreatment device according to claim 1, characterized in that: Four first solenoid valves (180) are provided, and the four first solenoid valves (180) are installed on different branches of the two three-way pipes (170).

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