A flue gas desulfurization device

Abstract

The utility model relates to the technical field of flue gas desulfurization, and disclose a kind of flue gas desulfurization device, including tank, send smoke pipe, smoke pipe and spray subassembly, send smoke pipe is located at tank lower position outside, smoke pipe is located at tank upper position outside, send smoke pipe, smoke pipe and tank are in the state of communication, it is characterized by: the tank is internally provided with several filter screens, several filter screens are provided with connecting rod, connecting rod outer end swing joint has telescopic link, telescopic link one end and tank interior are fixedly connected;The other end of connecting rod swing joint has connecting ring, and connecting ring is screw thread connected with threaded rod, and threaded rod is rotatably connected with tank;The tank is internally provided with fixed rod, and fixed rod is fixedly connected with tank, and the top of threaded rod is rotatably connected with fixed rod;By setting filter screen, the lime water of recycling can be filtered, so that spray subassembly cannot be easily blocked, and long-term flue gas filtration is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas desulfurization technical field, concretely is a flue gas desulfurization device. BACKGROUND

[0002] Flue gas desulfurization device is a kind of equipment for treating the flue gas generated in combustion process, remove sulfur dioxide (SO2) therein.In many industrial production processes, such as thermal power generation, steel smelting, chemical production, etc., burning sulfur-containing fuel will produce a large amount of flue gas containing sulfur dioxide.Sulfur dioxide is a major atmospheric pollutant, which can cause environmental problems such as acid rain, chemical smog, and has many hazards to human health and ecological system.

[0003] Chinese patent provides flue gas desulfurization device, and the publication number is CN210993668U, it includes the pretreatment box for carrying out physical desulfurization to flue gas, the desulfurization tank for carrying out chemical desulfurization to flue gas and gas guide device, gas guide device includes first pipeline and second pipeline, first pipeline is communicated with pretreatment box;The two ends of second pipeline are communicated with pretreatment box and desulfurization tank respectively, and the second end of second pipeline is located at the position close to the bottom of desulfurization tank.The flue gas desulfurization device disclosed by the utility model includes the pretreatment box for carrying out physical desulfurization to flue gas and the desulfurization tank for carrying out chemical desulfurization to flue gas, which can carry out physical desulfurization and chemical desulfurization to flue gas, and this way can make sulfur dioxide in flue gas be stripped more thoroughly, so that the flue gas discharged reaches the discharge standard, and the flue gas desulfurization device disclosed by the utility model only needs to send limestone powder and clean water into desulfurization tank first, and then pass flue gas into pretreatment box to complete twice desulfurization of flue gas.

[0004] The above-mentioned device has the effect of simple operation and convenient desulfurization, but when lime water is used for spraying desulfurization, the recycling of lime water can cause the blockage of the spraying assembly, which affects the flue gas desulfurization, and therefore a flue gas desulfurization device is needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a flue gas desulfurization device to solve the problem that the recycling of limestone can cause the blockage of the spraying assembly when the existing device uses lime water for desulfurization.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flue gas desulfurization device, comprising a tank body, a smoke feeding pipe, a smoke outlet pipe and a spraying assembly, the smoke feeding pipe is located at the lower position outside the tank body, the smoke outlet pipe is located at the upper position outside the tank body, the smoke feeding pipe, the smoke outlet pipe and the tank body are in a communicating state, characterized in that: a plurality of filter screens are arranged inside the tank body, a connecting rod is arranged between the plurality of filter screens, a telescopic rod is movably connected to one end of the connecting rod outside, and one end of the telescopic rod is fixedly connected to the inside of the tank body.

[0007] Preferably, the other end of the connecting rod is movably connected to a connecting ring, and the connecting ring is threadedly connected to a threaded rod, which is rotatably connected to the tank body.

[0008] Preferably, a fixing rod is provided inside the tank body, the fixing rod is fixedly connected to the tank body, and the top end of the threaded rod is rotatably connected to the fixing rod.

[0009] Preferably, a motor is installed at the bottom of the tank, and the output shaft of the motor is fixedly connected to the threaded rod.

[0010] Preferably, a water inlet pipe is provided through the inside and outside of the tank, the water inlet pipe is connected to an annular pipe, and a nozzle is provided at the bottom of the annular pipe, with the nozzle located above the filter screen.

[0011] Preferably, a valve is provided on one side of the tank body, and a demister is provided inside the tank body, with the demister located above the spray assembly.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This flue gas desulfurization device can filter the lime water generated during desulfurization by setting a filter screen, so that the recycled lime water is less likely to clog the spray components. When the spray components spray the flue gas for desulfurization, the liquid will be filtered through the filter screen to the bottom of the tank, thus filtering the lime water.

[0014] 2) This flue gas desulfurization device, through the installation of a water inlet pipe, annular pipe, and nozzles in conjunction with a filter screen, can clean the filter screen. When in use, start the motor, the threaded rod rotates and drives the connecting ring to move upward, so that the filter screen, which was originally in a concave state, becomes convex. Then connect the water inlet pipe to the water source, the water source will enter the annular pipe and spray out from the nozzle. Since the filter screen is in a convex state at this time, the water flow can wash the impurities filtered on the top of the filter screen down to the bottom of the tank, thereby achieving the effect of cleaning the filter screen. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a diagram illustrating the internal structure of this utility model;

[0018] Figure 4 This is a partial internal structural diagram of the present invention.

[0019] In the figure: 1, tank body; 2, smoke pipe; 3, smoke pipe; 4, spray assembly; 5, demister; 6, valve; 7, threaded rod; 8, connecting ring; 9, connecting rod; 10, telescopic rod; 11, fixed rod; 12, filter screen; 13, motor; 14, water inlet pipe; 15, annular pipe; 16, spray head. DETAILED DESCRIPTION

[0020] 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 protection scope of the utility model.

[0021] Embodiment one

[0022] In combination Figures 1-4 A flue gas desulfurization device, comprising a tank body 1, a smoke pipe 2, a smoke pipe 3 and a spray assembly 4, the smoke pipe 2 is located at the lower position outside the tank body 1, the smoke pipe 3 is located at the upper position outside the tank body 1, and the smoke pipe 2, the smoke pipe 3 and the tank body 1 are in a communication state.

[0023] Referring to Figure 1 - Figure 3 Further, a plurality of filter screens 12 are arranged in the tank body 1, connecting rods 9 are arranged between the plurality of filter screens 12, a telescopic rod 10 is movably connected to one end of the connecting rod 9, one end of the telescopic rod 10 is fixedly connected to the inside of the tank body 1, the other end of the connecting rod 9 is movably connected to a connecting ring 8, the connecting ring 8 is threadedly connected to a threaded rod 7, and the threaded rod 7 is rotatably connected to the tank body 1; a fixed rod 11 is arranged in the tank body 1, the fixed rod 11 is fixedly connected to the tank body 1, the top end of the threaded rod 7 is rotatably connected to the fixed rod 11; and a motor 13 is arranged at the bottom of the tank body 1, and the output shaft of the motor 13 is fixedly connected to the threaded rod 7.

[0024] Specifically, the filter screen 12 can filter the lime water after spraying. When limestone solids are generated after spraying, the spray assembly 4 can be blocked by the repeatedly used circulating water source, so that the filter screen 12 is arranged to filter the lime water, and the lime water can be repeatedly used.

[0025] Embodiment two

[0026] Referring to Figure 4 On the basis of embodiment one, further, a water inlet pipe 14 is arranged through the inside and outside of the tank body 1, the water inlet pipe 14 is connected to an annular pipe 15, a spray head 16 is arranged at the bottom of the annular pipe 15, and the spray head 16 is located above the filter screen 12; a valve 6 is arranged at one side of the outside of the tank body 1, a demister 5 is arranged in the inside of the tank body 1, and the demister 5 is located above the spray assembly 4.

[0027] Specifically, the spray head 16 can clean the filter screen 12, when the filter screen 12 needs to be cleaned, the motor 13 is started, the threaded rod 7 rotates, the connecting ring 8 moves upward to make the connecting rod 9 rotate upward, so that the filter screen 12 changes from the recessed state to the protruding state, thereby facilitating the spray head 16 to spray and wash the filter screen 12.

[0028] In actual operation, the flue gas enters the inside of the tank body 1 through the flue gas conveying pipe 2, the lime water sprayed by the spraying assembly 4 is used for desulfurization of the flue gas, the sprayed lime water reaches the bottom inside of the tank body 1 after being filtered by the filter screen 12, the filter screen 12 can filter the lime solid particles generated during spraying, thereby slowing down the rate of increase of the concentration of the lime water at the bottom of the tank body 1, so that the spraying assembly 4 is not easy to be blocked, when the filter screen 12 inside the tank body 1 needs to be cleaned, first, the motor 13 is started, the threaded rod 7 rotates to drive the connecting ring 8 to move upward, the connecting rod 9 rotates, the telescopic rod 10 first contracts and then elongates, the filter screen 12 changes from the recessed state to the protruding state, at this time, the water source is connected from the connecting pipe 14, the water source will pass through the annular pipe 15 and be sprayed from the spray head 16, since the filter screen 12 is in the protruding state at this time, the water source can wash out the limestone of the filter screen 12 and drop to the bottom inside of the tank body 1, thereby achieving the effect of cleaning the filter screen 12.

[0029] 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 variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization device, comprising a tank body (1), a flue gas inlet pipe (2), a flue gas outlet pipe (3) and a spray assembly (4), the flue gas inlet pipe (2) is located at a lower position outside the tank body (1), the flue gas outlet pipe (3) is located at an upper position outside the tank body (1), the flue gas inlet pipe (2), the flue gas outlet pipe (3) and the tank body (1) are in a communication state, characterized in that: The tank body (1) is internally provided with a plurality of filter screens (12), the filter screens (12) are provided with connecting rods (9) therebetween, one end of the connecting rod (9) is movably connected with an extension rod (10), one end of the extension rod (10) is fixedly connected with the tank body (1).

2. A flue gas desulphurization device according to claim 1, characterized in that: The other end of the connecting rod (9) is movably connected with a connecting ring (8), the connecting ring (8) is threadedly connected with a threaded rod (7), and the threaded rod (7) is rotatably connected with the tank body (1).

3. A flue gas desulphurization device according to claim 2, characterized in that: The tank body (1) is internally provided with a fixed rod (11), the fixed rod (11) is fixedly connected with the tank body (1), and the top end of the threaded rod (7) is rotatably connected with the fixed rod (11).

4. A flue gas desulphurization device according to claim 3, characterized in that: The bottom of the tank body (1) is provided with a motor (13), and the output shaft of the motor (13) is fixedly connected with the threaded rod (7).

5. A flue gas desulphurization device according to claim 4, characterized in that: A water inlet pipe (14) is arranged through the inside and outside of the tank body (1), the water inlet pipe (14) is connected with a ring-shaped pipe (15), the ring-shaped pipe (15) is provided with a spray head (16) at the bottom, and the spray head (16) is located above the filter screen (12).

6. A flue gas desulphurization device according to claim 1, characterized in that: The tank body (1) is provided with a valve (6) on one side, and the tank body (1) is internally provided with a demister (5), and the demister (5) is located above the spray assembly (4).

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