Thermal power plant by-product transportation and classification device

Abstract

The utility model discloses a thermal power plant by-product transportation and classification device, which relates to the technical field of thermal power plant transportation and comprises a boiler main body, the outer surface of the boiler main body is fixedly connected with a support frame and fixedly communicated with a ventilation frame, and the lower part of a discharge hopper of the boiler main body is provided with a transportation assembly. And a smoke outlet of the ventilation frame fixedly communicates with an exhaust pipe and a classification treatment mechanism arranged on the outer surface of the ventilation frame. According to the utility model, the treatment box and the layering plate are arranged, so that a liquid desulfurizing agent and a liquid denitrifying agent can be conveniently stored in the upper cavity and the lower cavity of the treatment box respectively to carry out desulfurization and denitrification treatment on sulfur dioxide, nitrate oxide and the like in flue gas; the stirring assembly is used for lifting the flue gas to be rapidly mixed and reacted with a liquid desulfurizing agent and a liquid denitrifying agent in the upper cavity and the lower cavity of the treatment box, the desulfurization and denitrification efficiency is improved, meanwhile, due to the arrangement of the guiding assembly, the flue gas can rapidly enter the treatment box, and the conveying assembly can convey ash into a subsequent collecting area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the transportation technical field of thermal power plant, concretely is a kind of by-product transportation classification device of thermal power plant. BACKGROUND

[0002] Thermal power plant is a factory that uses fuel (such as coal) to produce electricity. However, when using coal as fuel, the coal is usually ground into powder and then charged into a boiler, and the coal powder in the boiler is fully combusted by a burner to produce heat energy, which is used to heat water in the pipes of the boiler to produce steam, which is then converted into mechanical energy by a steam engine, and the mechanical energy is converted into electrical energy by a generator driven by the steam turbine.

[0003] However, after the coal powder is burned, by-products such as ash and flue gas are produced, and the flue gas contains a lot of sulfur and nitrogen oxides. In order to prevent the emission of sulfur dioxide and nitrogen oxides in the flue gas from polluting the environment, the flue gas needs to be sequentially classified and treated before being discharged into the environment. Therefore, we provide a by-product transportation classification device for thermal power plants to solve the above problems. SUMMARY

[0004] The purpose of the present utility model is to overcome the shortcomings of the prior art and provide a by-product transportation classification device for thermal power plants. The device can conveniently process the by-products produced after the coal is burned in the boiler, and the ash in the by-products can be discharged from the boiler and transported. The sulfur dioxide and nitrogen oxides in the flue gas are treated by desulfurization and denitrification to avoid pollution of the environment.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a by-product transportation classification device for thermal power plants, comprising a boiler body, a support frame fixedly connected to the outer surface of the boiler body, and a ventilation frame fixedly communicated with the outer surface of the boiler body. A transportation assembly is arranged at the lower part of the discharge hopper of the boiler body.

[0006] The exhaust port of the ventilation frame is fixedly communicated with an exhaust pipe, and a classification treatment mechanism is arranged on the outer surface of the ventilation frame. The classification treatment mechanism comprises a treatment box fixed to the outer surface of the ventilation frame and connected to the outer end of the exhaust pipe, and a layering plate fixed to the inner wall of the treatment box for dividing the treatment box into an upper cavity and a lower cavity. The classification treatment mechanism further comprises an agitating assembly located inside the treatment box and a guiding assembly located inside the exhaust pipe. The classification treatment mechanism further comprises a driving assembly fixed to the outer surface of the treatment box, which is used to drive the rotation of the agitating assembly and the guiding assembly.

[0007] Further, the classification processing mechanism further comprises a one-way exhaust valve installed on the reserved hole on the upper surface of the layering plate and the bottom wall of the processing box, which is used to control the exhaust of flue gas in the upper cavity and the lower cavity of the processing box. By setting the one-way exhaust valve, the flue gas transmitted in the exhaust pipe can be discharged to the inside of the processing box in one direction through the one-way exhaust valve, and the flue gas can be transmitted in the upper cavity and the lower cavity of the processing box, so that the flue gas can be transmitted from the lower cavity to the upper cavity in turn after being processed.

[0008] Further, the stirring assembly comprises stirring blades rotatably connected to the inner walls of the upper cavity and the lower cavity of the processing box, which are used to promote the rapid mixing reaction of flue gas, liquid desulfurizer and liquid denitration agent in the upper cavity and the lower cavity of the processing box. By setting the stirring assembly, the liquid desulfurizer and the liquid denitration agent in the upper cavity and the lower cavity of the processing box can be stirred, so that the liquid can be rapidly mixed with the flue gas, thereby improving the efficiency of the chemical reaction of the flue gas with the liquid desulfurizer and the liquid denitration agent.

[0009] Further, the driving assembly comprises a fixed plate fixed to the outer surface of the processing box, and a servo motor installed on the upper surface of the fixed plate. The output shaft of the servo motor is rotatably connected to the fixed plate and fixedly connected to a rotating rod. The driving assembly further comprises a first bevel gear fixedly sleeved on the outer surface of the rotating rod, and a second bevel gear fixedly connected to the outer end of the stirring blade and engaged with the first bevel gear. By setting the driving assembly, the stirring assembly can be driven to rotate, so that the liquid in the upper cavity and the lower cavity of the processing box can be rapidly stirred, thereby improving the desulfurization and denitration treatment of sulfur oxides and nitrogen oxides in the flue gas.

[0010] Further, the guiding assembly comprises an air guide plate fixed to the inner wall of the exhaust pipe, and a fan wheel rotatably connected to the upper surface of the air guide plate. The guiding assembly further comprises a linkage assembly connected to the lower end of the fan wheel and connected to the driving assembly. By setting the guiding assembly, the flue gas transmitted in the exhaust pipe can be rapidly circulated, so that the flue gas can be rapidly transmitted to the inside of the processing box, thereby enabling the flue gas to react with the liquid desulfurizer and the liquid denitration agent, and realizing the desulfurization and denitration of sulfur oxides and nitrogen oxides in the flue gas.

[0011] Further, the linkage assembly comprises a third bevel gear fixed to the lower end of the rotating rod, and a rotating shaft rotatably connected to the reserved hole on the inner wall of the exhaust pipe. The two ends of the rotating shaft are fixedly connected with a fourth bevel gear and a fifth bevel gear, respectively. The fourth bevel gear is engaged with the third bevel gear. The linkage assembly further comprises a sixth bevel gear fixedly connected to the lower end of the fan wheel and engaged with the fifth bevel gear. By setting the linkage assembly, the driving assembly can drive the guiding assembly to work, so that the guiding assembly can rapidly guide and discharge the flue gas in the exhaust pipe into the processing box.

[0012] Further, the conveying assembly comprises a conveying belt located directly below the discharge hopper of the support frame, and a plurality of support seats connected with the conveying belt, and the exhaust outlet of the processing box is fixedly connected with an exhaust pipe, through the conveying assembly, the ash generated after the coal powder in the boiler body is burned can fall on the conveying belt, so that the ash can be conveyed to the subsequent collection area through the conveying of the conveying belt.

[0013] Compared with the prior art, the power plant byproduct conveying and classifying device has the following beneficial effects:

[0014] 1、The utility model discloses a processing box and layering board are set up, can be convenient for processing box upper chamber and lower chamber respectively store liquid desulfurizer and liquid denitration agent and carry out desulfurization and denitration treatment to sulfur dioxide and nitric oxide etc.

[0015] 2、The utility model discloses the setting of the drive assembly can conveniently drive the stirring work of the stirring assembly, and through the linkage effect of the linkage assembly, can drive the guiding assembly to the quick guiding of flue gas when driving the stirring assembly to the quick stirring fusion reaction of liquid desulfurizer and liquid denitration agent and flue gas, and then can greatly improve the efficiency of flue gas into the processing box. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the three-dimensional structure of the whole device of the utility model;

[0017] Figure 2 It is the bottom view of the three-dimensional structure of the whole device of the utility model;

[0018] Figure 3 It is the sectional view of the three-dimensional structure of the guiding assembly of the utility model;

[0019] Figure 4 It is the sectional view of the three-dimensional structure of the stirring assembly of the utility model.

[0020] In the drawing: 1, boiler body;2, support frame;3, ventilation frame;4, conveying belt;5, support seat;6, exhaust pipe;7, classification processing mechanism;701, processing box;702, layering board;703, one-way exhaust valve;704, stirring blade;705, fixed plate;706, servo motor;707, rotating rod;708, first bevel gear;709, second bevel gear;7010, third bevel gear;7011, rotating shaft;7012, fourth bevel gear;7013, fifth bevel gear;7014, ventilation plate;7015, fan wheel;7016, sixth bevel gear;8, exhaust pipe. DETAILED DESCRIPTION

[0021] The principles and features of the present application are described below in conjunction with the accompanying drawings, and the examples are used to explain the present application and are not intended to limit the scope of the present application.

[0022] As described in the background, after the combustion of pulverized coal, by-products such as ash and flue gas after the complete combustion of pulverized coal, and many sulfur, nitric oxide and the like are contained in the flue gas, in order to prevent the pollution of the environment caused by the emission of sulfur dioxide and nitric oxide and the like in the flue gas, the flue gas needs to be sequentially classified and treated, therefore, the present embodiment provides a thermal power plant by-product transportation classification device, which can conveniently process the by-products after the combustion of coal in the boiler, so that the ash in the by-products is discharged from the boiler and transported, and the sulfur dioxide and nitric oxide in the flue gas are desulfurized and denitrified, thereby avoiding pollution to the environment.

[0023] Referring to Figure 1 Figure 4 The present embodiment provides a thermal power plant by-product transportation classification device, which comprises a boiler main body 1, a support frame 2 fixedly connected to the outer surface of the boiler main body 1, a ventilation frame 3 fixedly communicated with the outer surface of the boiler main body 1, and a transportation assembly arranged at the lower part of the discharge hopper of the boiler main body 1.

[0024] Referring to Figures 1 to 4 The setting of the transportation assembly can facilitate the transportation of the ash after the combustion of pulverized coal in the boiler, so that the ash can be transported to the subsequent collection area, the setting of the support frame 2 can facilitate the support and stable placement of the boiler main body 1, and the setting of the ventilation frame 3 can facilitate the discharge of the flue gas generated after the combustion in the boiler main body 1 through the smoke exhaust port of the ventilation frame 3 under the condition of negative pressure in the boiler main body 1.

[0025] The transportation assembly comprises a conveyor belt 4 located directly below the discharge hopper of the support frame 2, and a plurality of support seats 5 connected with the conveyor belt 4, and the discharge outlet of the treatment box 701 is fixedly communicated with a smoke exhaust pipe 8.

[0026] By setting the transportation assembly, the ash generated after the combustion of pulverized coal in the boiler main body 1 can fall onto the conveyor belt 4, so that the ash can be transported to the subsequent collection area by the transmission of the conveyor belt 4.

[0027] As a supplement, by setting a driving device for driving the conveyor belt 4, the conveyor belt 4 can be driven to transport the ash, and the setting of the support seat 5 can stably support and place the conveyor belt 4, and the smoke exhaust pipe 8 is used to discharge the treated flue gas.

[0028] ​The exhaust port of the ventilation frame 3 is fixedly communicated with an exhaust pipe 6, and a classification treatment mechanism 7 is arranged on the outer surface of the ventilation frame 3. The classification treatment mechanism 7 comprises a treatment box 701 fixedly arranged on the outer surface of the ventilation frame 3 and communicated with the outer end of the exhaust pipe 6, a layering plate 702 fixedly arranged on the inner wall of the treatment box 701 and used for dividing the treatment box 701 into an upper cavity and a lower cavity, an agitation assembly arranged in the treatment box 701, and a guide assembly arranged in the exhaust pipe 6. The classification treatment mechanism 7 further comprises a driving assembly fixedly arranged on the outer surface of the treatment box 701 and used for driving the rotation of the agitation assembly and the guide assembly.

[0029] With reference to Figures 1 to 4 The classification treatment mechanism 7 can facilitate the treatment of flue gas generated in the boiler body 1 and the desulfurization and denitrification of sulfur dioxide and nitric oxide in the flue gas. Liquid desulfurization agent and liquid denitrification agent are respectively filled in the upper cavity and the lower cavity of the treatment box 701 to chemically react with sulfur dioxide and nitric oxide, so as to achieve the effect of desulfurization and denitrification of the flue gas.

[0030] In addition, the liquid desulfurization agent is N-methyldiethanolamine, which is an organic compound in the form of colorless or dark yellow oil and can be mixed with water and alcohol, slightly soluble in ether, and widely used as a desulfurization and purification emulsifier and an acid gas absorbent in oil field gas and coal gas.

[0031] The main components of the liquid denitrification agent also include aluminum oxide, silicon oxide, calcium oxide and magnesium oxide, among which the content of aluminum oxide and silicon oxide is the largest, and they are mainly used for denitrification treatment.

[0032] The classification treatment mechanism 7 further comprises a one-way exhaust valve 703 installed in the bottom wall of the treatment box 701 and the reserved hole in the upper surface of the layering plate 702, which is used for controlling the exhaust of flue gas in the upper cavity and the lower cavity of the treatment box 701.

[0033] The one-way exhaust valve 703 can facilitate the one-way exhaust of flue gas in the exhaust pipe 6 to the inside of the treatment box 701, and can enable the flue gas to be transmitted from the lower cavity to the upper cavity after being treated in the lower cavity.

[0034] The agitation assembly comprises stirring blades 704 rotationally connected to the inner walls of the upper cavity and the lower cavity of the treatment box 701, which are used for the rapid mixing reaction of flue gas with liquid desulfurization agent and liquid denitrification agent in the upper cavity and the lower cavity of the treatment box 701.

[0035] By setting the stirring assembly, the liquid desulfurizer and the liquid denitration agent in the upper cavity and the lower cavity of the treatment box 701 can be stirred, so that the liquid can be quickly mixed with the flue gas, thereby improving the efficiency of the chemical reaction between the flue gas and the liquid desulfurizer and the liquid denitration agent.

[0036] In addition, by driving the stirring blade 704 to rotate, the stirring blade 704 can quickly stir the liquid in the upper cavity and the lower cavity of the treatment box 701, thereby increasing the flow rate of the liquid.

[0037] The driving assembly includes a fixed plate 705 fixed to the outer surface of the treatment box 701, and a servo motor 706 installed on the upper surface of the fixed plate 705. The output rotating shaft of the servo motor 706 penetrates the fixed plate 705 and is fixedly connected with a rotating rod 707. The driving assembly further includes a first bevel gear 708 fixedly sleeved on the outer surface of the rotating rod 707, and a second bevel gear 709 fixedly connected with the outer end of the stirring blade 704 and engaged with the first bevel gear 708.

[0038] By setting the driving assembly, the stirring assembly can be driven to rotate, so that the stirring assembly can quickly stir the liquid in the upper cavity and the lower cavity of the treatment box 701, thereby improving the desulfurization and denitration treatment of sulfur oxides and nitrogen oxides in the flue gas.

[0039] In addition, by starting the servo motor 706, the servo motor 706 can drive the rotating rod 707 to rotate, so that the rotating rod 707 can drive the first bevel gear 708 and the second bevel gear 709 to mesh with each other, so that the second bevel gear 709 can drive the stirring blade 704 in the stirring assembly to rotate.

[0040] The guide assembly includes a ventilation plate 7014 fixed to the inner wall of the exhaust pipe 6, and a fan wheel 7015 rotatably connected to the upper surface of the ventilation plate 7014. The guide assembly further includes a linkage assembly connected with the lower end of the fan wheel 7015 and connected with the driving assembly.

[0041] By setting the guide assembly, the flue gas transmitted in the exhaust pipe 6 can be quickly circulated, so that the flue gas can be quickly transmitted to the inside of the treatment box 701, so that the flue gas can be chemically reacted in the liquid desulfurizer and the liquid denitration agent, thereby realizing the desulfurization and denitration of sulfur oxides and nitrogen oxides in the flue gas.

[0042] In addition, through the action of the linkage assembly, the driving assembly can drive the fan wheel 7015 to rotate while stirring the stirring assembly, so that the fan wheel 7015 can quickly circulate the flue gas in the exhaust pipe 6 and transmit it to the inside of the treatment box 701.

[0043] The linkage assembly comprises a third bevel gear 7010 fixed at the lower end of the rotating rod 707, and a rotating shaft 7011 rotatably connected with the reserved hole in the inner wall of the exhaust pipe 6, both ends of the rotating shaft 7011 are fixedly connected with a fourth bevel gear 7012 and a fifth bevel gear 7013, the fourth bevel gear 7012 is engaged with the third bevel gear 7010, and the linkage assembly further comprises a sixth bevel gear 7016 fixed at the lower end of the fan wheel 7015 and engaged with the fifth bevel gear 7013.

[0044] By setting the linkage assembly, the driving assembly can drive the guiding assembly to operate, so that the guiding assembly can quickly guide and discharge the flue gas in the exhaust pipe 6 into the treatment box 701.

[0045] In addition, when the driving assembly drives the rotating rod 707 to rotate, the rotating rod 707 drives the third bevel gear 7010 to engage with the fourth bevel gear 7012 for transmission, so that the fourth bevel gear 7012 drives the fifth bevel gear 7013 to rotate through the rotating shaft 7011, and the fifth bevel gear 7013 engages with the sixth bevel gear 7016 for transmission, so that the sixth bevel gear 7016 drives the fan wheel 7015 to rotate, thereby improving the flow speed of the flue gas in the exhaust pipe 6.

[0046] Working principle: when coal is used as fuel for combustion in a thermal power plant, a large amount of flue gas and ash will be generated during the combustion process, so the flue gas and ash need to be treated. When the ash generated after the combustion of coal powder is treated, the conveying assembly is used. The conveying belt 4 in the conveying assembly is driven by an external self-set driving device to transport the ash discharged from the boiler body 1 and transport it to the subsequent collection area for collection and treatment.

[0047] When the sulfur, nitric oxide and other oxides in the flue gas are treated, the flue gas is transmitted to the treatment box 701 through the exhaust pipe 6, and the upper cavity and the lower cavity of the treatment box 701 are filled with liquid desulfurizer and liquid denitration agent respectively, so that the flue gas can be sequentially desulfurized and denitrated when passing through the one-way exhaust valve 703 into the treatment box 701. During the desulfurization and denitrification process, the servo motor 706 can be started, the output shaft of the servo motor 706 can drive the rotating rod 707 to rotate, the rotating rod 707 can drive the first bevel gear 708 to rotate synchronously, the first bevel gear 708 can be meshed with the second bevel gear 709 to drive the second bevel gear 709, so that the second bevel gear 709 can drive the stirring blade 704 to quickly stir the liquid desulfurizer and the liquid denitration agent in the upper cavity and the lower cavity of the treatment box 701, accelerate the rapid fusion reaction with the sulfur oxide and the nitric oxide in the flue gas, and improve the efficiency of desulfurization and denitrification. When the rotating rod 707 rotates, the third bevel gear 7010 and the fourth bevel gear 7012 can be meshed, the fourth bevel gear 7012 can drive the fifth bevel gear 7013 to rotate through the rotating shaft 7011, the fifth bevel gear 7013 can be meshed with the sixth bevel gear 7016, so that the fifth bevel gear 7013 can drive the fan wheel 7015 to rotate, and the fan wheel 7015 can quickly exhaust the flue gas in the exhaust pipe 6 to the inside of the treatment box 701.

Claims

1. A thermal power plant by-product transportation classification device comprising a boiler body (1), characterized by: The outer surface of the boiler body (1) is fixedly connected with a support frame (2), the outer surface of the boiler body (1) is fixedly connected with a ventilation frame (3), and the lower part of the discharge hopper of the boiler body (1) is provided with a conveying assembly; The exhaust port of the ventilation frame (3) is fixedly connected with an exhaust pipe (6), and a classification treatment mechanism (7) is arranged on the outer surface of the ventilation frame (3), the classification treatment mechanism (7) comprises a treatment box (701) fixedly arranged on the outer surface of the ventilation frame (3) and connected with the outer end of the exhaust pipe (6), and a layering plate (702) fixedly arranged on the inner wall of the treatment box (701) and used for dividing the treatment box (701) into an upper cavity and a lower cavity, the classification treatment mechanism (7) further comprises an agitating assembly arranged in the treatment box (701), and a guiding assembly arranged in the exhaust pipe (6), and the classification treatment mechanism (7) further comprises a driving assembly fixedly arranged on the outer surface of the treatment box (701), and the driving assembly is used for driving the rotation of the agitating assembly and the guiding assembly.

2. A thermal power plant by-product transportation classification apparatus according to claim 1, characterized in that: The classification treatment mechanism (7) further comprises a one-way exhaust valve (703) installed on the bottom wall of the treatment box (701) and the upper surface of the layering plate (702), and the one-way exhaust valve (703) is used for controlling the exhaust of flue gas in the upper cavity and the lower cavity of the treatment box (701).

3. A thermal power plant by-product transportation classification apparatus as claimed in claim 1, wherein: The agitating assembly comprises stirring blades (704) rotatably connected with the inner walls of the upper cavity and the lower cavity of the treatment box (701), and the stirring blades (704) are used for the rapid mixing reaction of flue gas, liquid desulfurizer and liquid denitration agent in the upper cavity and the lower cavity of the treatment box (701).

4. A thermal power plant by-product transportation classification apparatus according to claim 3, characterized in that: The driving assembly comprises a fixed plate (705) fixedly arranged on the outer surface of the treatment box (701), and a servo motor (706) installed on the upper surface of the fixed plate (705), the output rotating shaft of the servo motor (706) penetrates through the fixed plate (705) and is fixedly connected with a rotating rod (707), and the driving assembly further comprises a first bevel gear (708) fixedly sleeved on the outer surface of the rotating rod (707), and a second bevel gear (709) fixedly arranged on the outer end of the stirring blade (704) and engaged with the first bevel gear (708).

5. A thermal power plant by-product transportation classification apparatus as claimed in claim 4, wherein: The guiding assembly comprises a ventilation plate (7014) fixedly arranged on the inner wall of the exhaust pipe (6), and a fan wheel (7015) rotatably connected with the upper surface of the ventilation plate (7014), and the guiding assembly further comprises a linkage assembly connected with the lower end of the fan wheel (7015) and connected with the driving assembly.

6. A thermal power plant by-product transportation classification apparatus according to claim 5, characterized in that: The linkage assembly comprises a third bevel gear (7010) fixedly arranged on the lower end of the rotating rod (707), and a rotating shaft (7011) rotatably matched with the reserved hole in the inner wall of the exhaust pipe (6), the two ends of the rotating shaft (7011) are fixedly connected with a fourth bevel gear (7012) and a fifth bevel gear (7013), respectively, the fourth bevel gear (7012) is engaged with the third bevel gear (7010), and the linkage assembly further comprises a sixth bevel gear (7016) fixedly arranged on the lower end of the fan wheel (7015) and engaged with the fifth bevel gear (7013).

7. A thermal power plant by-product transportation classification apparatus according to claim 6, characterized in that: The conveying assembly comprises a conveying belt (4) located right below the discharge hopper of the support frame (2), and a plurality of support seats (5) connected with the conveying belt (4), and the discharge outlet of the processing box (701) is fixedly communicated with a smoke exhaust pipe (8).

Images