Wet desulphurization absorption device for thermal power plant

Abstract

The utility model discloses a wet desulfurization absorption device for a thermal power plant, and relates to the technical field of desulfurization devices. The air inlet assembly comprises an air inlet pipe and an annular air pipe, the air inlet pipe is communicated with a smoke exhaust pipe of the thermal power plant and extends into the absorption barrel, the annular air pipe is arranged at the end of the air inlet pipe, and a plurality of air outlet heads are arranged on the lower surface of the annular air pipe in a circumferential array mode; and the desulfurization assembly is used for desulfurizing the flue gas introduced into the absorption cylinder. According to the wet desulphurization absorption device for the thermal power plant disclosed by the utility model, the gas inlet assembly and the desulphurization assembly are arranged, so that when the device is used for carrying out desulphurization treatment on flue gas of the thermal power plant, the flue gas can be introduced into desulfurizer liquid in the absorption barrel through the gas inlet pipe, and the desulfurizer liquid reacts with the flue gas, so that the aim of partial desulphurization is fulfilled; and then the liquid conveying pump is started, so that the purpose of fully desulfurizing the flue gas is achieved, and the desulfurization effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to desulfurization device technical field especially relates to a wet flue gas desulfurization and absorption device of thermal power plant. BACKGROUND

[0002] Thermal power plant is a factory that uses fuel (such as coal) to produce electricity.

[0003] Thermal power plant will discharge a large amount of flue gas in the process of operation, and the common flue gas desulfurization method is wet desulfurization, that is, the flue gas is introduced into the absorption tower, and then the desulfurization agent made of limestone or lime slurry is sprayed and washed to achieve the purpose of desulfurization, but the flue gas entering the absorption tower cannot be ensured to fully contact with the sprayed desulfurization agent, resulting in that part of the flue gas not contacting with the desulfurization agent will also be discharged, thereby causing insufficient desulfurization, and in the process of desulfurization, the solid particles in the flue gas not fully contacting with the desulfurization agent will also be discharged, causing air pollution. In view of this, the present application provides a wet flue gas desulfurization and absorption device for thermal power plant. SUMMARY

[0004] The utility model discloses a wet flue gas desulfurization and absorption device for thermal power plant, which aims to solve the technical problem of insufficient desulfurization in the background art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A wet flue gas desulfurization and absorption device for thermal power plant, comprising:

[0007] An absorption cylinder;

[0008] An air inlet assembly for introducing flue gas from the thermal power plant into the inner bottom of the absorption cylinder, the air inlet assembly comprising an air inlet pipe in communication with the flue gas discharge pipe of the thermal power plant and extending into the interior of the absorption cylinder, and an annular air pipe provided at the end of the air inlet pipe, the lower surface of the annular air pipe being provided with a plurality of air outlet heads arranged in a circumferential array;

[0009] A desulfurization assembly for desulfurizing the flue gas introduced into the interior of the absorption cylinder, the desulfurization assembly comprising a desulfurization agent liquid filled in the inner bottom of the absorption cylinder, and a rotating rod rotatably arranged on the inner top wall of the absorption cylinder and extending to the upper surface of the absorption cylinder, the outer surface of the rotating rod being provided with an annular spray pipe, the lower surface of the annular spray pipe being provided with a plurality of atomizing nozzles arranged in a circumferential array, the interior of the rotating rod being provided with a cylindrical cavity, the inner wall of the cylindrical cavity being provided with four first connecting pipes embedded in a circumferential array and extending into the interior of the annular spray pipe, the desulfurization assembly further comprising a liquid delivery pump fixed on the outer surface of the absorption cylinder for delivering the desulfurization agent liquid in the inner bottom of the absorption cylinder to the interior of the annular spray pipe.

[0010] In a preferred scheme, the bottom end of the rotating rod is fixed with a connecting pipe, and the bottom end of the connecting pipe is rotationally connected with the end of the air inlet pipe. The inner wall of the connecting pipe is embedded with four second connecting pipes in a circumferential array, which extend into the interior of the annular air pipe.

[0011] The annular air pipe can rotate, and the flue gas can enter the interior of the annular air pipe.

[0012] In a preferred scheme, the liquid inlet end of the infusion pump is provided with a liquid suction pipe extending to the bottom interior of the absorption cylinder, and the end of the liquid suction pipe is provided with a filter cover. The liquid outlet end of the infusion pump is provided with an infusion pipe extending into the cylindrical cavity of the rotating rod, and the inner top wall of the cylindrical cavity is provided with a rotating hole rotationally connected with the outer surface of the infusion pipe.

[0013] The liquid in the bottom interior of the absorption cylinder can be delivered into the interior of the annular spray pipe by the infusion pump.

[0014] In a preferred scheme, the surface of the infusion pipe is provided with a connecting cylinder, and the upper surface of the absorption cylinder is rotationally provided with a rotating shaft extending into the interior of the connecting cylinder. The top end of the rotating shaft is provided with an impeller.

[0015] When the liquid of the desulfurizing agent is delivered into the infusion pipe during the operation of the infusion pump, the impeller can be driven to rotate, thereby driving the rotating shaft to rotate.

[0016] In a preferred scheme, the surface of the rotating shaft is fixed with a driving gear, and the outer surface of the rotating rod is fixed with a driven gear meshing with the driving gear.

[0017] The rotating rod can be driven to rotate by the rotation of the rotating shaft through the driving gear and the driven gear.

[0018] In a preferred scheme, the inner wall of the absorption cylinder is fixed with an intercepting mesh plate, and the surface of the intercepting mesh plate is provided with a rotating hole rotationally connected with the outer surface of the rotating rod. The outer surface of the rotating rod is fixed with a scraper slidingly connected with the outer surface of the intercepting mesh plate.

[0019] The particles in the flue gas can be effectively intercepted by the intercepting mesh plate, and the lower surface of the intercepting mesh plate can be effectively scraped and cleaned by the scraper.

[0020] In a preferred scheme, the upper surface of the absorption cylinder is provided with an exhaust assembly. The exhaust assembly includes an exhaust pipe embedded in the upper surface of the absorption cylinder and extending into the interior of the absorption cylinder, and a mounting pipe threadedly connected with the top end of the exhaust pipe. The inner wall of the mounting pipe is fixed with two symmetrical mounting mesh plates, and the interior of the mounting pipe is filled with activated carbon particles in the middle of the two mounting mesh plates.

[0021] By setting the activated carbon particles, the odor in the flue gas can be adsorbed and eliminated by the activated carbon particles when the flue gas after desulfurization is discharged through the exhaust pipe.

[0022] As can be seen from the above, the wet desulfurization absorption device for thermal power plants has the following technical effects.

[0023] Firstly, the device can pass the flue gas into the inside of the desulfurizer liquid in the absorption cylinder through the air inlet pipe, so that the desulfurizer liquid and the flue gas react to achieve the purpose of partial desulfurization, and then the liquid pump is started to achieve the purpose of fully desulfurizing the flue gas, thereby further improving the desulfurization effect.

[0024] Secondly, the gas after being sprayed and desulfurized can be discharged through the exhaust pipe, and at the same time, the flue gas can be adsorbed by the activated carbon particles before being discharged, thereby achieving the purpose of double desulfurization. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective structural schematic view of the wet desulfurization absorption device for thermal power plants is provided.

[0026] Figure 2 A rear view structural schematic view of the wet desulfurization absorption device for thermal power plants is provided.

[0027] Figure 3 A sectional structural schematic view of the wet desulfurization absorption device for thermal power plants is provided.

[0028] Figure 4 A perspective structural schematic view of the wet desulfurization absorption device for thermal power plants is provided. Figure 3 An enlarged structural schematic view of position A in the wet desulfurization absorption device for thermal power plants is provided.

[0029] In the drawings:

[0030] 100, absorption cylinder;

[0031] 200, air inlet assembly; 201, air inlet pipe; 202, annular air pipe; 203, air outlet head;

[0032] 300, desulfurization assembly; 301, rotating rod; 302, annular spray pipe; 303, atomizing nozzle; 304, cylindrical cavity; 305, first connecting pipe; 306, infusion pump; 307, connecting pipe; 308, second connecting pipe; 309, liquid suction pipe; 3010, infusion pipe; 3011, scraper; 3012, connecting cylinder; 3013, rotating shaft; 3014, impeller; 3015, driving gear disc; 3016, driven gear disc; 3017, intercepting mesh plate;

[0033] 400, exhaust assembly; 401, exhaust pipe; 402, mounting pipe; 403, mounting mesh disc; 404, activated carbon particles. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] Referring to Figures 1 to 4 A wet desulfurization absorption device for a thermal power plant, comprising:

[0037] An absorption cylinder 100;

[0038] An air inlet assembly 200 for introducing flue gas of the thermal power plant into the inner bottom of the absorption cylinder 100, the air inlet assembly 200 comprising an air inlet pipe 201 in communication with the flue gas exhaust pipe of the thermal power plant and extending into the interior of the absorption cylinder 100, and an annular air pipe 202 arranged at the end of the air inlet pipe 201, the lower surface of the annular air pipe 202 being provided with a plurality of air outlet heads 203 arranged in a circumferential array;

[0039] The desulfurization assembly 300 is used for desulfurizing the flue gas entering the inside of the absorption cylinder 100, and the desulfurization assembly 300 comprises a desulfurizer liquid filled in the bottom of the absorption cylinder 100, and a rotating rod 301 rotatably arranged on the top wall of the absorption cylinder 100 and extending to the upper surface of the absorption cylinder 100, wherein the outer surface of the rotating rod 301 is provided with an annular spray pipe 302, the lower surface of the annular spray pipe 302 is provided with a plurality of atomizing nozzles 303 in a circumferential array, and the inside of the rotating rod 301 is provided with a cylindrical cavity 304, and the inner wall of the cylindrical cavity 304 is embedded with four first connecting pipes 305 in a circumferential array and extending to the inside of the annular spray pipe 302, and the desulfurization assembly 300 further comprises a liquid delivery pump 306 fixedly arranged on the outer surface of the absorption cylinder 100 and used for delivering the desulfurizer liquid in the bottom of the absorption cylinder 100 to the inside of the annular spray pipe 302.

[0040] With reference to Figure 2 and Figure 3 In a preferred embodiment, the bottom end of the rotating rod 301 is fixedly provided with a connecting pipe 307, and the bottom end of the connecting pipe 307 is rotatably connected with the end of the air inlet pipe 201, and the inner wall of the connecting pipe 307 is embedded with four second connecting pipes 308 in a circumferential array and extending to the inside of the annular air pipe 202.

[0041] Specifically, by arranging the connecting pipe 307 and the second connecting pipe 308, the annular air pipe 202 can rotate, and the flue gas can enter the inside of the annular air pipe 202.

[0042] With reference to Figure 3 In a preferred embodiment, the liquid inlet end of the liquid delivery pump 306 is provided with a liquid suction pipe 309 extending to the bottom of the absorption cylinder 100, and the end of the liquid suction pipe 309 is provided with a filter cover, and the liquid outlet end of the liquid delivery pump 306 is provided with a liquid delivery pipe 3010 extending to the inside of the cylindrical cavity 304 of the rotating rod 301, and the inner top wall of the cylindrical cavity 304 is provided with a rotating hole rotatably connected with the outer surface of the liquid delivery pipe 3010.

[0043] Specifically, by arranging the liquid suction pipe 309 and the liquid delivery pipe 3010, the desulfurizer liquid in the bottom of the absorption cylinder 100 can be delivered to the inside of the annular spray pipe 302 by the liquid delivery pump 306.

[0044] With reference to Figure 3 and Figure 4 In a preferred embodiment, the surface of the liquid delivery pipe 3010 is provided with a connecting cylinder 3012, and the upper surface of the absorption cylinder 100 is rotatably provided with a rotating shaft 3013 extending to the inside of the connecting cylinder 3012, and the top end of the rotating shaft 3013 is provided with an impeller 3014.

[0045] Specifically, by setting the impeller 3014, in the process of running the infusion pump 306, the desulfurizing agent liquid is delivered into the infusion pipe 3010, which can drive the impeller 3014 to rotate, thereby driving the rotating shaft 3013 to rotate.

[0046] With reference to Figure 4 In a preferred embodiment, the surface of the rotating shaft 3013 is fixedly provided with a driving gear plate 3015, and the outer surface of the rotating rod 301 is fixedly provided with a driven gear plate 3016 which is in mesh with the driving gear plate 3015.

[0047] Specifically, by setting the driving gear plate 3015 and the driven gear plate 3016, the rotating rod 301 can be driven to rotate by the rotation of the rotating shaft 3013.

[0048] With reference to Figure 3 In a preferred embodiment, the inner wall of the absorption cylinder 100 is fixedly provided with an intercepting net plate 3017, and the surface of the intercepting net plate 3017 is provided with a rotating hole which is in rotating connection with the outer surface of the rotating rod 301, and the outer surface of the rotating rod 301 is fixedly provided with a scraper 3011 which is in sliding connection with the outer surface of the intercepting net plate 3017.

[0049] Specifically, by setting the intercepting net plate 3017, the particulate impurities in the flue gas can be effectively intercepted, and the lower surface of the intercepting net plate 3017 can be effectively scraped and cleaned by the scraper 3011.

[0050] The utility model discloses a flue gas desulfurization device, which comprises a flue gas inlet assembly 200, a desulfurization assembly 300, an absorption cylinder 100, an infusion pump 306, a mist nozzle 303 and an exhaust assembly 400.

[0051] With reference to Figure 4 In a preferred embodiment, the upper surface of the absorption cylinder 100 is provided with the exhaust assembly 400, which comprises an exhaust pipe 401 embedded in the upper surface of the absorption cylinder 100 and extending into the interior of the absorption cylinder 100, and a mounting pipe 402 threadedly connected to the top end of the exhaust pipe 401, the inner wall of the mounting pipe 402 is fixedly provided with two symmetrical mounting net plates 403, and the interior of the mounting pipe 402 is filled with activated carbon particles 404 in the middle of the two mounting net plates 403.

[0052] Specifically, by setting the activated carbon particles 404, when the desulfurized flue gas is discharged through the exhaust pipe 401, the activated carbon particles 404 can adsorb and eliminate the odor in the flue gas.

[0053] The utility model discloses a double desulfurization device for thermal power plant flue gas, which comprises a cylindrical cavity 304, a ring-shaped spraying pipe 302, a mist spraying head 303, a liquid suction pipe 309, a liquid delivery pump 306, an active carbon particle 404, an exhaust pipe 401 and an exhaust assembly 400.

[0054] Working principle: when the device is used for desulfurization treatment of flue gas of thermal power plant, the flue gas can be introduced into the inside of the desulfurizer liquid in the absorption cylinder 100 through the air inlet pipe 201, so that the desulfurizer liquid and the flue gas can react to realize partial desulfurization, then the liquid delivery pump 306 is started, the desulfurizer liquid at the bottom of the absorption cylinder 100 is delivered into the cylindrical cavity 304 through the liquid suction pipe 309 and the liquid delivery pipe 3010, and then delivered into the ring-shaped spraying pipe 302 through the first connecting pipe 305, and finally sprayed out through the mist spraying head 303 to spray and desulfurize the flue gas, and in the process of spray and desulfurization, the particulate impurities in the flue gas can be intercepted under the action of the intercepting screen plate 3017, so that the flue gas can be fully desulfurized, when the desulfurizer liquid is delivered in the liquid delivery pipe 3010, the impeller 3014 can be driven to rotate, the rotation of the impeller 3014 drives the rotation of the rotating shaft 3013, the rotation of the rotating shaft 3013 drives the rotation of the driving gear disc 3015, the rotation of the driving gear disc 3015 drives the rotation of the driven gear disc 3016 and the rotating rod 301, the rotation of the rotating rod 301 drives the rotation of the ring-shaped spraying pipe 302, so that the mist spraying head 303 can be rotated, the liquid sprayed out of the mist spraying head 303 can fully contact and react with the flue gas, at the same time, the rotation of the rotating rod 301 also drives the scraper 3011 to rotate on the lower surface of the intercepting screen plate 3017, so that the intercepted impurities can be effectively cleaned, and the rotating rod 301 also drives the connecting pipe 307 to rotate when rotating, so that the ring-shaped air pipe 202 can be rotated, so that the flue gas sprayed out through the air outlet head 203 can rapidly react in the inside of the desulfurizer liquid, so that the sufficiency of the reaction between the flue gas and the desulfurizer liquid is further improved, and the desulfurization effect is further improved, and the flue gas after being sprayed and desulfurized can be discharged through the exhaust pipe 401, and in the process of discharging, the flue gas can be adsorbed by the active carbon particles 404 and then discharged, so that double desulfurization can be realized.

[0055] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be the replacement of part of the structure, device, method step, or the complete technical scheme. According to the technical scheme and the utility model concept of the utility model, equivalent replacement or change should be covered in the protection scope of the utility model.

Claims

1. A wet desulfurization absorption device for a thermal power plant, characterized in that, include: Absorption cylinder (100); An air intake assembly (200) is used to introduce flue gas from a thermal power plant into the bottom of an absorption cylinder (100). The air intake assembly (200) includes an air intake pipe (201) that communicates with the flue gas pipe of the thermal power plant and extends into the absorption cylinder (100), and an annular air pipe (202) disposed at the end of the air intake pipe (201). The lower surface of the annular air pipe (202) is provided with a plurality of air outlets (203) arranged in a circumferential array. A desulfurization assembly (300) is used to desulfurize the flue gas introduced into the absorption cylinder (100). The desulfurization assembly (300) includes a desulfurizing agent liquid injected into the bottom of the absorption cylinder (100) and a rotating rod (301) rotatably disposed on the top wall of the absorption cylinder (100) and extending to the upper surface of the absorption cylinder (100). An annular spray pipe (302) is provided on the outer surface of the rotating rod (301), and the lower surface of the annular spray pipe (302) is arranged in a circumferential array. There are several atomizing nozzles (303), and the rotating rod (301) has a cylindrical cavity (304) inside. The inner wall of the cylindrical cavity (304) is embedded with four first connecting pipes (305) extending into the annular spray pipe (302) in a circumferential array. The desulfurization assembly (300) also includes a liquid pump (306) fixed on the outer surface of the absorption cylinder (100) for conveying the desulfurizing agent liquid at the bottom of the absorption cylinder (100) to the inside of the annular spray pipe (302).

2. The wet desulfurization absorption device for a thermal power plant according to claim 1, characterized in that, The bottom end of the rotating rod (301) is fixed with a connecting pipe (307), and the bottom end of the connecting pipe (307) is rotatably connected to the end of the air inlet pipe (201). The inner wall of the connecting pipe (307) is circumferentially arrayed with four second connecting pipes (308) extending into the annular air pipe (202).

3. The wet desulfurization absorption device for a thermal power plant according to claim 1, characterized in that, The infusion pump (306) has a suction pipe (309) extending to the bottom of the absorption cylinder (100) at its inlet end, and a filter cover is provided at the end of the suction pipe (309). The infusion pump (306) has an infusion pipe (3010) extending into the cylindrical cavity (304) inside the rotating rod (301). The inner top wall of the cylindrical cavity (304) has a rotating hole that is rotatably connected to the outer surface of the infusion pipe (3010).

4. The wet desulfurization absorption device for a thermal power plant according to claim 3, characterized in that, The surface of the infusion tube (3010) is provided with a connecting cylinder (3012), and the upper surface of the absorption cylinder (100) is rotatably provided with a rotating shaft (3013) extending into the interior of the connecting cylinder (3012), and the top end of the rotating shaft (3013) is provided with an impeller (3014).

5. The wet desulfurization absorption device for a thermal power plant according to claim 4, characterized in that, The surface of the rotating shaft (3013) is fixed with a drive gear disk (3015), and the outer surface of the rotating rod (301) is fixed with a driven gear disk (3016) that meshes with the drive gear disk (3015).

6. The wet desulfurization absorption device for a thermal power plant according to claim 1, characterized in that, The inner wall of the absorption cylinder (100) is fixedly provided with an intercepting mesh plate (3017), and the surface of the intercepting mesh plate (3017) is provided with a rotating hole that is rotatably connected to the outer surface of the rotating rod (301). The outer surface of the rotating rod (301) is fixedly provided with a scraper (3011) that is slidably connected to the outer surface of the intercepting mesh plate (3017).

7. The wet desulfurization absorption device for a thermal power plant according to claim 1, characterized in that, The upper surface of the absorption cylinder (100) is provided with an exhaust assembly (400). The exhaust assembly (400) includes an exhaust pipe (401) embedded in the upper surface of the absorption cylinder (100) and extending into the interior of the absorption cylinder (100), and an installation pipe (402) threaded to the top of the exhaust pipe (401). The inner wall of the installation pipe (402) is fixed with two symmetrical installation mesh disks (403), and the interior of the installation pipe (402) located between the two installation mesh disks (403) is filled with activated carbon particles (404).

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