CN216703905U - Waste gas filtering device for blending combustion of coal in thermal power plant - Google Patents
Waste gas filtering device for blending combustion of coal in thermal power plant Download PDFInfo
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- CN216703905U CN216703905U CN202121425074.1U CN202121425074U CN216703905U CN 216703905 U CN216703905 U CN 216703905U CN 202121425074 U CN202121425074 U CN 202121425074U CN 216703905 U CN216703905 U CN 216703905U
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Abstract
The utility model discloses a waste gas filtering device for blending combustion of coal in a thermal power plant, which comprises a combustion furnace, a primary filtering mechanism and a sulfur removal filtering system, wherein the primary filtering mechanism is arranged on the combustion furnace; an air inlet pipe is fixedly installed at the air outlet end of the combustion furnace, a filtering air pipe is fixedly installed at the bottom of the primary filtering mechanism, an air outlet pipe is fixedly installed at the top of the sulfur removal filtering system, and an air outlet filter screen is fixedly installed at the air outlet end of the air outlet pipe; the bottom fixed mounting of elementary filtering mechanism has fixed guide, and the inboard activity of fixed guide has cup jointed the rectangle slider, and the top fixed mounting of rectangle slider has elementary filtration screen panel, and the rectangular channel has been seted up at the top of rectangle slider. According to the utility model, the anti-falling filling and sealing sheet is matched with the rotating shaft of the sealing sheet along the sealing sheet, so that the heat-engine plant can effectively block the filtering air pipe when the efficiency is reduced or the work is suspended, the alkali liquor is prevented from flowing backwards, meanwhile, the impeller and the stirring blade are matched to stir the alkali liquor, the contact area between the waste gas and the alkali liquor is increased, and the filtering efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of thermal power generation, in particular to a waste gas filtering device for coal blending and combustion in a thermal power plant.
Background
A thermal power plant, which is called a thermal power plant for short, is a plant for producing electric energy by using combustible materials as fuel. The basic production process is as follows: the fuel heats water to generate steam during combustion, the chemical energy of the fuel is converted into heat energy, the steam pressure drives a turbine to rotate, the heat energy is converted into mechanical energy, then the turbine drives a generator to rotate, and the mechanical energy is converted into electric energy. They generate electricity by taking advantage of the pressure drop during the passage of high temperature, high pressure steam or gas through the turbine to low pressure air or condensate.
At present, most of fuels of thermal power plants mainly use coal, mainly comprise bituminous coal and lean coal, a large amount of gases containing sulfur and nitrogen oxides can be generated after the fuels mainly use coal are combusted, and the method is also one of the important reasons for air pollution and acid rain formation in China at present.
However, these methods have certain limitations, the initial temperature of the exhaust gas emission is high, the pressure is high, when the exhaust is stopped or the emission is reduced, the pressure is easily reduced, so that the alkali liquor flows back into the exhaust pipeline, the damage of the filtering system is caused, the current alkali liquor collection and filtration efficiency is not high, a multi-stage filtration facility needs to be arranged, and the operation cost is directly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a waste gas filtering device for coal blending combustion in a thermal power plant.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a waste gas filtering device for blending combustion of coal in a thermal power plant comprises a combustion furnace, a primary filtering mechanism and a sulfur removal filtering system;
an air inlet pipe is fixedly installed at the air outlet end of the combustion furnace, a filtering air pipe is fixedly installed at the bottom of the primary filtering mechanism, an air outlet pipe is fixedly installed at the top of the sulfur removal filtering system, and an air outlet filter screen is fixedly installed at the air outlet end of the air outlet pipe;
the bottom of the primary filtering mechanism is fixedly provided with a fixed guide rail, the inner side of the fixed guide rail is movably sleeved with a rectangular sliding block, the top of the rectangular sliding block is fixedly provided with a primary filtering net cover, and the top of the rectangular sliding block is provided with a rectangular groove;
the fixed axis of rotation that has cup jointed in desulfurization filtration system's the inboard, the fixed impeller that has cup jointed of surface side wall of axis of rotation, the surface side wall of axis of rotation still fixedly has cup jointed stirring vane, desulfurization filtration system's inside splendid attire has alkali lye, alkali lye discharge valve has still been seted up to desulfurization filtration system's side, desulfurization filtration system's top fixed mounting has alkali lye filling opening.
Preferably, the size of the inner slide rail of the fixed guide rail is matched with that of the rectangular slide block.
Preferably, the bottom of the fixed guide rail is provided with a through round hole, the diameter of the round hole is the same as the inner diameter of the filtering air pipe and is connected with the top end of the filtering air pipe, the width of the rectangular groove is equal to the inner diameter of the filtering air pipe, and the length of the rectangular groove is larger than the inner diameter of the filtering air pipe.
Preferably, a filter screen is detachably mounted on the inner side of the primary filter screen cover, and the aperture of the filter screen is not more than 5 μm;
specifically, the rectangular sliding block can be drawn out along the fixed guide rail when the filter screen is replaced, and then the filter screen inside the primary filter screen cover is replaced.
Preferably, the installation position of the impeller is located inside the filtering air pipe, the size of the impeller is matched with the inner diameter of the filtering air pipe, a waterproof bearing is installed at the contact part of the rotating shaft and the filtering air pipe, and a waterproof rotating bearing is installed at the contact part of the rotating shaft and the inner side of the sulfur removal filtering system.
Preferably, the fixed shutoff piece axis of rotation that has cup jointed in the inboard of elementary filtration screen panel, shutoff piece axis of rotation with the rolling bearing is installed to the inboard contact site of elementary filtration screen panel, the fixed cover of the table lateral wall of shutoff piece axis of rotation has prevented down the embedment closure piece, just prevent down the size of embedment closure piece with the inboard size phase-match of elementary filtration screen panel.
Compared with the prior art, the utility model has the beneficial effects that:
1. when burning furnace and going into waste gas through the intake pipe, when waste gas passes through primary filter screen panel, gaseous through the filter screen promotion prevent down embedment putty piece along shutoff piece axis of rotation production gap, waste gas passes through the gap and gets into primary filter mechanism, accomplish primary filter, then waste gas gets into through the rectangular channel and filters the trachea and carry out the next grade filtration, when adjusting combustion efficiency step-down or the pause burning of thermal power plant, intake pipe pressure reduces, prevent down the closure of embedment putty piece and plug up primary filter screen panel, prevent that alkali lye from flowing backward the inside that gets into primary filter mechanism through filtering the trachea.
2. The waste gas that fires burning furnace production can effectively filter out solid impurity wherein through the 5 micron mesh structure of elementary filter screen panel and accomplish elementary filtration, waste gas gets into alkali lye through filtering the trachea, waste gas drives the impeller rotation when through the impeller, it is rotatory to drive stirring vane simultaneously, stir alkali lye, can stir garrulous gas bubble from filtering trachea bottom combustion gas simultaneously, increase the contact of alkali lye and waste gas, and the efficiency of filtration is improved, need not extra power drive, recycle energy, and energy consumption is reduced, and the environmental pollution is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a waste gas filtering device for blending coal in a thermal power plant according to the present invention;
FIG. 2 is a schematic diagram of a primary filtering structure of a waste gas filtering device for coal blending combustion in a thermal power plant according to the present invention;
FIG. 3 is a schematic view of an alkali liquor filtering structure of the waste gas filtering device for coal blending combustion in a thermal power plant according to the present invention;
fig. 4 is a schematic structural view of a primary filter screen of the waste gas filtering device for coal blending combustion in a thermal power plant according to the present invention.
In the figure: 1. a combustion furnace; 2. an air inlet pipe; 3. a primary filtration mechanism; 4. filtering the air pipe; 5. An exhaust pipe; 6. a sulfur removal filtration system; 31. fixing the guide rail; 32. a primary filter screen; 33. A rectangular groove; 34. a rectangular slider; 51. an exhaust filter screen; 61. a rotating shaft; 62. an impeller; 63. a stirring blade; 64. alkali liquor; 65. an alkali liquor discharge valve; 66. an alkali liquor filling port; 321. Anti-falling filling and sealing blocking sheets; 322. the plugging sheet rotates the shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, the waste gas filtering device for blending coal and burning in a thermal power plant comprises a burning furnace 1, a primary filtering mechanism 3 and a sulfur removal filtering system 6;
an air inlet pipe 2 is fixedly installed at the air outlet end of the combustion furnace 1, a filtering air pipe 4 is fixedly installed at the bottom of the primary filtering mechanism 3, an air outlet pipe 5 is fixedly installed at the top of the sulfur removal filtering system 6, and an air outlet filter screen 51 is fixedly installed at the air outlet end of the air outlet pipe 5;
the bottom of the primary filtering mechanism 3 is fixedly provided with a fixed guide rail 31, the inner side of the fixed guide rail 31 is movably sleeved with a rectangular sliding block 34, the top of the rectangular sliding block 34 is fixedly provided with a primary filtering net cover 32, and the top of the rectangular sliding block 34 is provided with a rectangular groove 33;
the inside of sulphur removal filtration system 6 is fixed to be cup jointed with axis of rotation 61, and the fixed impeller 62 that has cup jointed of the table lateral wall of axis of rotation 61, the table lateral wall of axis of rotation 61 still is fixed to be cup jointed with stirring vane 63, and the inside splendid attire of sulphur removal filtration system 6 has alkali lye 64, and alkali lye discharge valve 65 has still been seted up to the side of sulphur removal filtration system 6, and the top fixed mounting of sulphur removal filtration system 6 has alkali lye filling opening 66.
As shown in fig. 2, the inner rail of the fixed rail 31 has a size corresponding to that of the rectangular block 34.
As shown in fig. 2, a through circular hole is formed at the bottom of the fixed guide rail 31, the diameter of the circular hole is the same as the inner diameter of the filtering air pipe 4 and is connected with the top end of the filtering air pipe 4, the width of the rectangular groove 33 is equal to the inner diameter of the filtering air pipe 4, and the length of the rectangular groove 33 is greater than the inner diameter of the filtering air pipe 4.
As shown in fig. 2, a filter screen is detachably mounted on the inner side of the primary filter screen cover 32, and the aperture of the filter screen is not more than 5 μm;
specifically, the filter screen can be replaced by drawing out the rectangular slider 34 along the fixed rail 31 and then replacing the filter screen inside the primary filter screen 32.
As shown in fig. 3, the impeller 62 is installed inside the filtering air pipe 4, the impeller 62 is matched with the inner diameter of the filtering air pipe 4, the waterproof bearing is installed on the contact part of the rotating shaft 61 and the filtering air pipe 4, and the waterproof bearing is installed on the contact part of the rotating shaft 61 and the inside of the sulfur removal filtering system 6.
As shown in fig. 4, a plugging piece rotating shaft 322 is fixedly sleeved on the inner side of the primary filter screen 32, a rotating bearing is installed at a contact part of the plugging piece rotating shaft 322 and the inner side of the primary filter screen 32, an anti-falling potting plugging piece 321 is fixedly sleeved on the surface side wall of the plugging piece rotating shaft 322, and the size of the anti-falling potting plugging piece 321 is matched with the size of the inner side of the primary filter screen 32.
In the utility model, when the combustion furnace 1 discharges waste gas through the air inlet pipe 2, the waste gas can effectively filter solid impurities in the waste gas through a 5-micron mesh structure of the primary filter screen 32 to complete primary filtration, the anti-falling encapsulation blocking piece 321 is pushed to rotate along the blocking piece rotating shaft 322 to generate a gap, the waste gas enters the primary filter mechanism 3 through the gap to complete primary filtration, the waste gas enters the filter air pipe 4 through the rectangular groove 33 to perform next-stage filtration, when the combustion efficiency of the thermal power plant is adjusted to be lowered or combustion is suspended, the pressure of the air inlet pipe 2 is reduced, the anti-falling encapsulation blocking piece 321 is closed to block the primary filter screen 32, and alkali liquor is prevented from flowing backwards through the filter air pipe 4 to enter the interior of the primary filter mechanism 3; waste gas is through filtering among the trachea 4 entering alkali lye 64, and waste gas drives impeller 62 rotatory when impeller 62, drives stirring vane 63 simultaneously and rotates, stirs alkali lye, can stir simultaneously and smash from the gas bubble of filtering 4 bottom combustion gas of trachea, increases the contact of alkali lye and waste gas, improves filtration efficiency, need not extra power drive, carries out cyclic utilization to energy, reduces energy consumption, reduces environmental pollution.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A waste gas filtering device for blending combustion of coal in a thermal power plant comprises a combustion furnace (1), and is characterized by further comprising a primary filtering mechanism (3) and a sulfur removal filtering system (6);
an air inlet pipe (2) is fixedly mounted at the air outlet end of the combustion furnace (1), a filtering air pipe (4) is fixedly mounted at the bottom of the primary filtering mechanism (3), an air outlet pipe (5) is fixedly mounted at the top of the sulfur removal filtering system (6), and an air outlet filter screen (51) is fixedly mounted at the air outlet end of the air outlet pipe (5);
a fixed guide rail (31) is fixedly installed at the bottom of the primary filtering mechanism (3), a rectangular sliding block (34) is movably sleeved on the inner side of the fixed guide rail (31), a primary filtering net cover (32) is fixedly installed at the top of the rectangular sliding block (34), and a rectangular groove (33) is formed in the top of the rectangular sliding block (34);
the inboard of sulphur removal filtration system (6) is fixed to be cup jointed rotation axis (61), impeller (62) have been cup jointed to the surface lateral wall of rotation axis (61) is fixed, stirring vane (63) have still been fixed to the surface lateral wall of rotation axis (61), the inside splendid attire of sulphur removal filtration system (6) has alkali lye (64), alkali lye discharge valve (65) have still been seted up to the side of sulphur removal filtration system (6), the top fixed mounting of sulphur removal filtration system (6) has alkali lye filling opening (66).
2. The waste gas filtering device for blending coal and burning of the thermal power plant as claimed in claim 1, wherein the size of the inner side slide rail of the fixed guide rail (31) is identical to that of the rectangular slide block (34).
3. The waste gas filtering device for blending coal and burning in thermal power plant according to claim 1, wherein a through round hole is formed at the bottom of the fixed guide rail (31), the diameter of the round hole is the same as the inner diameter of the filtering air pipe (4) and is connected with the top end of the filtering air pipe (4), the width of the rectangular groove (33) is the same as the inner diameter of the filtering air pipe (4), and the length of the rectangular groove (33) is larger than the inner diameter of the filtering air pipe (4).
4. The waste gas filtering device for blending coal and burning of thermal power plant as claimed in claim 1, wherein a filter screen is detachably mounted on the inner side of the primary filter screen (32), and the aperture of the filter screen is not more than 5 μm.
5. The waste gas filtering device for blending coal and burning in thermal power plant according to claim 1, wherein the installation position of the impeller (62) is located inside the filtering air pipe (4), the size of the impeller (62) is matched with the inner diameter of the filtering air pipe (4), a waterproof bearing is installed on the contact part of the rotating shaft (61) and the filtering air pipe (4), and a waterproof rotating bearing is installed on the contact part of the rotating shaft (61) and the inner side of the sulfur removal filtering system (6).
6. The exhaust gas filtering device for blending combustion of coal in thermal power plant as claimed in claim 1, wherein a plugging sheet rotating shaft (322) is fixedly sleeved on the inner side of the primary filter screen (32), a rotating bearing is installed at a contact part of the plugging sheet rotating shaft (322) and the inner side of the primary filter screen (32), an anti-falling potting sheet (321) is fixedly sleeved on the surface side wall of the plugging sheet rotating shaft (322), and the size of the anti-falling potting sheet (321) matches with the size of the inner side of the primary filter screen (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121425074.1U CN216703905U (en) | 2021-06-25 | 2021-06-25 | Waste gas filtering device for blending combustion of coal in thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121425074.1U CN216703905U (en) | 2021-06-25 | 2021-06-25 | Waste gas filtering device for blending combustion of coal in thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216703905U true CN216703905U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121425074.1U Active CN216703905U (en) | 2021-06-25 | 2021-06-25 | Waste gas filtering device for blending combustion of coal in thermal power plant |
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| Country | Link |
|---|---|
| CN (1) | CN216703905U (en) |
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2021
- 2021-06-25 CN CN202121425074.1U patent/CN216703905U/en active Active
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