Flue gas purification device for coal-fired power plant

Abstract

The utility model relates to the technical field of flue gas purification, and discloses a flue gas purification device for a coal-fired power plant, which aims to solve the problem that the existing device cannot efficiently purify the flue gas of the coal-fired power plant, and comprises a flue gas treatment box body, the surface of the flue gas treatment box body is provided with a flue gas primary dust falling treatment mechanism and a flue gas impurity treatment mechanism, and the flue gas enters through a gas inlet pipe; the method comprises the following steps: spraying water by an atomizing spray head for preliminary dust fall, driving an auxiliary treatment plate by a motor to accelerate flue gas flow to strengthen dust fall, storing dust and water in a collecting water tank, discharging the dedusted flue gas through an exhaust pump and an exhaust pipeline, entering a flue gas impurity treatment mechanism, and in the mechanism, guiding by a guide fan, spraying a catalyst by a spraying spray head, and reacting with introduced ammonia gas for denitration. According to the device, through two-stage treatment, impurity elements in flue gas are effectively eliminated, efficient purification is achieved, the burden of follow-up treatment equipment can be relieved, and the good application prospect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas purification technical field, concretely is a kind of coal-fired power plant flue gas purification device. BACKGROUND

[0002] The dust purifier is a kind of high-efficiency air purifier designed for industrial waste gas smoke and dust, which is composed of a complete air purification system of dust suction pipeline, high-efficiency filter, activated carbon filter, special dust suction fan and touch type microcomputer controller, and is widely used in machinery, hardware, electronics, photoelectricity, chemical industry, tobacco, pharmaceutical, food, biology and other industries and other places with smoke, dust and dust pollution.

[0003] Generally, the existing flue gas treatment device is directly discharged after being treated by filter plate after water washing, but the flue gas of coal-fired power plant contains some harmful elements, which will harm the atmosphere when directly filtered and discharged, and cannot achieve efficient purification treatment. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of coal-fired power plant flue gas purification device to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of coal-fired power plant flue gas purification device, including flue gas treatment box, the surface of the flue gas treatment box is provided with flue gas primary dust-settling treatment mechanism, the surface of the flue gas treatment box is provided with flue gas impurity treatment mechanism;

[0006] The flue gas impurity treatment mechanism includes a medicament tank fixedly connected to the right end of the top of the flue gas treatment box body, liquid discharge pipes fixedly connected to the left and right ends of the medicament tank, a medicine spraying head installed at the right end of the top inside of the flue gas treatment box body, an installation frame fixedly connected to the center of the right end of the top inside of the flue gas treatment box body, a guide fan installed inside the installation frame, plug-in frames fixedly connected to the left and right sides of the right end inside of the flue gas treatment box body, treatment filter plates plugged into the plug-in frames, a bottom discharge port formed at the bottom end of the flue gas treatment box body, a collection tank fixedly connected to the bottom end of the bottom discharge port, a collection tank drain pipe fixedly connected to the left end of the collection tank, a filter plate extraction port formed at the right end of the front of the flue gas treatment box body, and the flue gas enters the right end inside of the flue gas treatment box body after being treated by the flue gas primary dust reduction treatment mechanism, is guided by the guide fan, is sprayed with the medicament by the medicine spraying head, the medicine spraying head sprays the catalyst, the flue gas, the catalyst and the imported ammonia gas react to generate nitrogen and water, and then the denitration treatment is performed, the water is filtered by the treatment filter plates in the later stage, the harmless nitrogen is discharged by the exhaust fan and the flue gas primary dust reduction treatment mechanism, and the arrangement of the mechanism can effectively eliminate the impurity elements in the flue gas and effectively purify the flue gas.

[0007] Preferably, the plug-in frames and the treatment filter plates are provided in two groups and are arranged at the center of the right end inside of the flue gas treatment box body.

[0008] Preferably, the medicament tank is provided with the liquid discharge pipes at the left and right ends, the liquid discharge pipes penetrate through the top of the flue gas treatment box body at the bottom end, and the medicine spraying head is installed at the bottom end of the liquid discharge pipe.

[0009] Preferably, the flue gas primary dust fall treatment mechanism comprises a water storage tank, the water storage tank is fixedly connected to the top left end of the flue gas treatment box body, water inlet pipes are fixedly connected to the left and right ends of the water storage tank, an atomizing nozzle is installed at the top left end in the flue gas treatment box body, a drain port is formed at the left end of the bottom of the flue gas treatment box body, a collection water tank is fixedly connected to the bottom of the drain port, a drain pipe is fixedly connected to the left end of the collection water tank, a partition plate is fixedly connected to the middle of the inside of the flue gas treatment box body, a rotating shaft is arranged at the left end of the partition plate, a fixing sleeve is fixedly connected to the surface of the rotating shaft, an auxiliary treatment plate is fixedly connected to the surface of the fixing sleeve, a motor bracket is fixedly connected to the center of the right end of the partition plate, a motor is installed in the motor bracket, exhaust pumps are installed at the front and rear ends of the right end of the partition plate, and exhaust pipes are fixedly connected to the right ends of the exhaust pumps.

[0010] Preferably, the rotating shaft is fixedly connected to the left end output end of the motor, and the exhaust pumps and the exhaust pipes are provided with two groups.

[0011] Preferably, the bottom end of the flue gas treatment box body is fixedly connected with a base, the left end top of the flue gas treatment box body is fixedly connected with an air inlet chamber, the left end of the air inlet chamber is fixedly connected with an air inlet pipe, an air inlet fan is installed in the air inlet chamber, the right end bottom of the flue gas treatment box body is fixedly connected with an air outlet chamber, and an air outlet fan is installed in the air outlet chamber.

[0012] Compared with the prior art, the coal-fired power plant flue gas purification device has the following beneficial effects:

[0013] The coal-fired power plant flue gas purification device is provided with a flue gas impurity treatment mechanism, flue gas enters the right end in the flue gas treatment box body after being treated by the flue gas primary dust fall treatment mechanism, is guided by a guide fan, and is sprayed with a medicament by a medicament spraying head; the medicament spraying head sprays a catalyst; the flue gas, the catalyst and introduced ammonia gas react to generate nitrogen and water, and then are subjected to denitration treatment; in the later period, the water is filtered by a treatment filter plate, and the harmless nitrogen is discharged by an air outlet fan and the flue gas primary dust fall treatment mechanism; and the arrangement of the flue gas impurity treatment mechanism can effectively eliminate impurity elements in the flue gas and effectively purify the flue gas.

[0014] The coal-fired power plant flue gas purification device is provided with a flue gas primary dust removal treatment mechanism, flue gas enters the device through the air inlet pipe, the flue gas is subjected to preliminary dust removal treatment by the water sprayed by the atomizing nozzle, the motor drives the rotating shaft to rotate, and the auxiliary treatment plate accelerates the flow of the flue gas, so as to strengthen the dust removal efficiency, the dust and water are stored in the collecting water tank for later discharge, the dust-removed flue gas is discharged through the exhaust pump and the exhaust pipeline, and then is treated through the flue gas impurity treatment mechanism, the setting of the mechanism can effectively pretreat the flue gas before treating the impurity elements in the flue gas, and the burden of the subsequent treatment equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a whole structure schematic view of the present application;

[0017] Figure 2 It is an internal structure schematic view of the present application;

[0018] Figure 3 It is a flue gas primary dust removal treatment mechanism schematic view of the present application;

[0019] Figure 4 It is a flue gas impurity treatment mechanism schematic view of the present application.

[0020] In the drawings: 1, base; 2, flue gas treatment box; 3, air inlet chamber; 4, air inlet pipe; 5, air inlet fan; 6, exhaust chamber; 7, exhaust fan; 8, flue gas primary dust removal treatment mechanism; 81, water storage tank; 82, water inlet pipe; 83, atomizing nozzle; 84, water outlet; 85, collecting water tank; 86, water outlet pipe; 87, rotating shaft; 88, fixed sleeve; 89, auxiliary treatment plate; 801, partition; 802, motor frame; 803, motor; 804, exhaust pump; 805, exhaust pipeline; 9, flue gas impurity treatment mechanism; 91, reagent tank; 92, liquid discharge pipe; 93, medicine spraying nozzle; 94, mounting frame; 95, guide fan; 96, plug-in frame; 97, treatment filter plate; 98, bottom discharge port; 99, collecting tank; 901, collecting tank water outlet pipeline; 902, filter plate suction port. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0022] In the present utility model, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be internal communication of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The present utility model provides the following technical solutions: Embodiment 1

[0024] Please refer to Figures 1-4 A coal-fired power plant flue gas purification device includes a flue gas treatment box body 2, the surface of the flue gas treatment box body 2 is provided with a flue gas primary dust removal treatment mechanism 8, the surface of the flue gas treatment box body 2 is provided with a flue gas impurity treatment mechanism 9;

[0025] The flue gas impurity treatment mechanism 9 comprises a medicament tank 91, the medicament tank 91 is fixedly connected to the top right end of the flue gas treatment box body 2, liquid discharge pipes 92 are fixedly connected to the left and right ends of the medicament tank 91, a medicament spraying head 93 is installed at the top right end inside the flue gas treatment box body 2, a mounting frame 94 is fixedly connected to the center of the top right end inside the flue gas treatment box body 2, a guide fan 95 is installed inside the mounting frame 94, plug-in frames 96 are fixedly connected to the left and right sides of the right end inside the flue gas treatment box body 2, treatment filter plates 97 are plugged into the plug-in frames 96, a bottom discharge port 98 is formed at the bottom end of the flue gas treatment box body 2, a collection tank 99 is fixedly connected to the bottom end of the bottom discharge port 98, a collection tank drainage pipe 901 is fixedly connected to the left end of the collection tank 99, a filter plate extraction port 902 is formed at the right front end of the flue gas treatment box body 2, the flue gas enters the right end inside the flue gas treatment box body 2 after being treated by the flue gas primary dust falling treatment mechanism 8, is guided by the guide fan 95, and is sprayed with medicament by the medicament spraying head 93, the medicament spraying head 93 sprays a catalyst, the flue gas, the catalyst and the imported ammonia gas react to generate nitrogen and water, and then are subjected to denitration treatment, are filtered by the treatment filter plates 97 in the later period, the water enters the collection tank 99, and the harmless nitrogen is discharged by the exhaust fan 7 and the flue gas primary dust falling treatment mechanism 8, and the arrangement of the mechanism can effectively eliminate the impurity elements in the flue gas and effectively purify the flue gas.

[0026] The plug-in frames 96 and the treatment filter plates 97 are provided in two groups and are arranged at the center of the right end inside the flue gas treatment box body 2.

[0027] The medicament tank 91 is provided with the liquid discharge pipes 92 at the left and right ends, the liquid discharge pipes 92 penetrate through the top of the flue gas treatment box body 2 at the bottom end, and the medicament spraying head 93 is installed at the bottom end of the liquid discharge pipe 92. Example 2

[0028] Please refer to Figures 1-4And on the basis of embodiment one, further get the flue gas first dust removal processing mechanism 8 including a water storage tank 81, the water storage tank 81 is fixedly connected to the left end of the top of the flue gas treatment box 2, the left and right ends of the water storage tank 81 are fixedly connected with the water inlet pipe 82, the inside top left end of the flue gas treatment box 2 is installed with the atomizing nozzle 83, the bottom left end of the flue gas treatment box 2 is provided with the drain outlet 84, the bottom of the drain outlet 84 is fixedly connected with the collection water tank 85, the left end of the collection water tank 85 is fixedly connected with the drain pipe 86, the inside middle segment of the flue gas treatment box 2 is fixedly connected with the partition plate 801, the left end of the partition plate 801 is provided with the rotating shaft 87, the surface of the rotating shaft 87 is fixedly connected with the fixed sleeve 88, the surface of the fixed sleeve 88 is fixedly connected with the auxiliary processing plate 89, the right end of the partition plate 801 is fixedly connected with the motor bracket 802, the inside of the motor bracket 802 is installed with the motor 803, the right end of the partition plate 801 is installed with the exhaust pump 804, the right end of the exhaust pump 804 is fixedly connected with the exhaust pipe 805, the flue gas enters the device through the air inlet pipe 4, the flue gas is preliminarily treated by the water sprayed by the atomizing nozzle 83, the motor 803 will drive the rotating shaft 87 to rotate, the auxiliary processing plate 89 will accelerate the flow of the flue gas, so as to strengthen the dust removal efficiency, the dust and water will enter the collection water tank 85 for storage, which is convenient for later discharge, the flue gas after dust removal will be discharged through the exhaust pump 804 and the exhaust pipe 805, and then can be treated through the flue gas impurity treatment mechanism 9, the setting of the mechanism can effectively pretreat the flue gas before treating the impurity elements in the flue gas, and reduce the burden of the subsequent treatment equipment;

[0029] The rotating shaft 87 is fixedly connected to the left end output end of the motor 803, and the exhaust pump 804 and the exhaust pipe 805 are provided with two groups;

[0030] The bottom end of the flue gas treatment box 2 is fixedly connected with the base 1, the left end top of the flue gas treatment box 2 is fixedly connected with the air inlet chamber 3, the left end of the air inlet chamber 3 is fixedly connected with the air inlet pipe 4, the inside of the air inlet chamber 3 is installed with the air inlet fan 5, the right end bottom of the flue gas treatment box 2 is fixedly connected with the exhaust chamber 6, and the inside of the exhaust chamber 6 is installed with the exhaust fan 7.

[0031] In the actual operation process, when the device is used, the flue gas enters the device through the air inlet pipe 4, the flue gas is preliminarily treated by the water sprayed by the atomizing nozzle 83, the motor 803 will drive the rotating shaft 87 to rotate, the auxiliary processing plate 89 will accelerate the flow of the flue gas, so as to strengthen the dust removal efficiency, the dust and water will enter the collection water tank 85 for storage, which is convenient for later discharge, the flue gas after dust removal will be discharged through the exhaust pump 804 and the exhaust pipe 805, and then can be treated through the flue gas impurity treatment mechanism 9, the setting of the mechanism can effectively pretreat the flue gas before treating the impurity elements in the flue gas, and reduce the burden of the subsequent treatment equipment;

[0032] The flue gas enters the right end of the flue gas treatment box 2 after passing through the flue gas primary dust removal treatment mechanism 8, is guided by the guide fan 95, and the medicament is sprayed by the spraying head 93. The spraying head 93 sprays the catalyst, the flue gas, the catalyst and the introduced ammonia gas react to generate nitrogen and water, and then the denitration treatment is performed. In the later stage, the filter plate 97 is used for filtering treatment, the water enters the collection box 99, and the harmless nitrogen is discharged through the exhaust fan 7 and the flue gas primary dust removal treatment mechanism 8.

[0033] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, preclude the existence of further identical elements in the process, method, article, or apparatus that includes the recited element.

Claims

1. A flue gas cleaning device for coal-fired power plants, comprising a flue gas treatment cabinet (2), characterized in that: The flue gas treatment box (2) is provided with a flue gas primary dust removal treatment mechanism (8), and the surface of the flue gas treatment box (2) is provided with a flue gas impurity treatment mechanism (9); The flue gas impurity treatment mechanism (9) comprises a medicament box (91), the medicament box (91) is fixedly connected to the top right end of the flue gas treatment box (2), the medicament box (91) is fixedly connected with a liquid discharge pipe (92) at the left and right ends, a medicine spraying head (93) is installed at the top right end inside the flue gas treatment box (2), a mounting frame (94) is fixedly connected to the center of the top right end inside the flue gas treatment box (2), a guide fan (95) is installed in the mounting frame (94), plug-in frames (96) are fixedly connected to the right end inside the flue gas treatment box (2), treatment filter plates (97) are plugged into the plug-in frames (96), a bottom discharge port (98) is formed at the bottom end of the flue gas treatment box (2), a collection box (99) is fixedly connected to the bottom end of the bottom discharge port (98), a collection box drain pipe (901) is fixedly connected to the left end of the collection box (99), and a filter plate extraction opening (902) is formed at the front right end of the flue gas treatment box (2).

2. A flue gas cleaning device for coal-fired power plants according to claim 1, characterized in that: The plug-in frames (96) and the treatment filter plates (97) are provided with two groups, and are arranged at the center of the right end inside the flue gas treatment box (2).

3. A flue gas cleaning device for coal-fired power plants according to claim 1, characterized in that: The medicament box (91) is provided with a liquid discharge pipe (92) at the left and right ends, the bottom end of the liquid discharge pipe (92) penetrates the top of the flue gas treatment box (2), and the medicine spraying head (93) is installed at the bottom end of the liquid discharge pipe (92).

4. A flue gas cleaning device for coal-fired power plants according to claim 1, characterized in that: The flue gas primary dust removal treatment mechanism (8) comprises a water storage tank (81), the water storage tank (81) is fixedly connected to the top left end of the flue gas treatment box (2), the water storage tank (81) is fixedly connected with a water inlet pipe (82) at the left and right ends, an atomizing nozzle (83) is installed at the top left end inside the flue gas treatment box (2), a drain port (84) is formed at the left end of the bottom end of the flue gas treatment box (2), a collection water tank (85) is fixedly connected to the bottom end of the drain port (84), a drain pipe (86) is fixedly connected to the left end of the collection water tank (85), a partition plate (801) is fixedly connected to the middle section inside the flue gas treatment box (2), the partition plate (801) is provided with a rotating shaft (87) at the left end, a fixed sleeve (88) is fixedly connected to the surface of the rotating shaft (87), an auxiliary treatment plate (89) is fixedly connected to the surface of the fixed sleeve (88), a motor frame (802) is fixedly connected to the center of the right end of the partition plate (801), a motor (803) is installed in the motor frame (802), exhaust pumps (804) are installed at the front and rear ends of the right end of the partition plate (801), and an exhaust pipe (805) is fixedly connected to the right end of the exhaust pump (804).

5. A flue gas cleaning device for a coal-fired power plant according to claim 4, characterized in that: The rotating shaft (87) is fixedly connected to the left end output end of the motor (803), and the exhaust pump (804) and the exhaust pipe (805) are provided with two groups.

6. A flue gas cleaning device for coal-fired power plants according to claim 1, characterized in that: The flue gas treatment box (2) bottom end fixedly connected with base (1), the flue gas treatment box (2) left end top fixedly connected with the air inlet chamber (3), the air inlet chamber (3) left end fixedly connected with the air inlet pipe (4), the air inlet chamber (3) inside the air inlet fan (5) is installed, the flue gas treatment box (2) right end bottom fixedly connected with the exhaust chamber (6), the exhaust chamber (6) inside the exhaust fan (7) is installed.

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