CN210729029U

CN210729029U - Air purification device for coal-fired thermal power plant

Info

Publication number: CN210729029U
Application number: CN201920994125.9U
Authority: CN
Inventors: 王哮江; 王成林; 王福冲; 方威
Original assignee: State Power Investment Group Xiexin Binhai Power Generation Co ltd
Current assignee: State Power Investment Group Xiexin Binhai Power Generation Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-06-12
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses an air purification device for coal-fired thermal power factory, including coolant tank, purifying column and liquid reserve tank, be provided with air inlet and deashing mouth on the tower wall of purifying column, two drainage fans are installed to the symmetry on the inside wall of purifying column, and the line between two drainage fans coincides with the central axis of air inlet mutually, be provided with the water conservancy diversion piece on the interior diapire of purifying column, and the water conservancy diversion piece is located two drainage fans under, one side that the water conservancy diversion piece is close to the air inlet evenly is provided with a plurality of ash-collecting sheets. The utility model discloses simple structure, reasonable in design promotes the drainage fan through the motion of gaseous self and changes its flow direction, has increased effective reaction time to a large amount of heats that can the make full use of gas carries, for device power supplies such as water pumps, have reduced unnecessary resource consumption.

Description

Air purification device for coal-fired thermal power plant

Technical Field

The utility model relates to an air purification technical field especially relates to an air purification device for coal-fired thermal power factory.

Background

A thermal power plant, called thermal power plant for short, is a plant for producing electric energy by using combustible materials as fuel, and the basic production process is as follows: the fuel heats water to generate steam during combustion, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, then the steam turbine drives a generator to rotate, the mechanical energy is converted into electric energy, and under the large background of building a harmonious society and developing circular economy, the influence of electric power on the environment is mainly considered in the direction of improving the thermal power technology.

Coal-fired thermal power factory is produced as fuel with the coal, there are a lot of coal ash granule and acid gas in the gas that its burning produced, if not purifying gas, can cause the air pollution problem, present air purification device adopts active carbon and alkaline reaction liquid to mutually support and purify waste gas mostly, nevertheless the filtration flow is comparatively simple usually, cause and purify the not abundant phenomenon, and do not utilize the heat in the gas, this can make a large amount of heat energy be wasted, therefore, we propose one purify thoroughly, energy can cyclic utilization be used for coal-fired thermal power factory's air purification device.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an air purification device for a coal-fired thermal power plant.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a air purification device for coal-fired thermal power factory, including coolant tank, purifying column and liquid reserve tank, be provided with air inlet and deashing mouth on the tower wall of purifying column, two drainage fans are installed to the symmetry on the inside wall of purifying column, and the line between two drainage fans coincides mutually with the central axis of air inlet, be provided with the water conservancy diversion piece on the interior diapire of purifying column, and the water conservancy diversion piece is located two drainage fans under, one side that the water conservancy diversion piece is close to the air inlet evenly is provided with a plurality of collection grey pieces.

Preferably, be provided with the heat exchange tube in the purifying tower, and cooling water tank passes through the pump machine and links to each other with the one end of heat exchange tube, the other end of heat exchange tube runs through the lateral wall of purifying tower and is connected with the inlet tube of transducer, the outlet pipe of transducer is connected with the water inlet of liquid reserve tank, and the delivery port of liquid reserve tank has the water pump through water piping connection.

Preferably, a flow control plate is fixedly installed in the purification tower, a plurality of dust collecting nets are symmetrically arranged on the flow control plate, a water conduit is arranged on a fixing frame above the flow control plate and is connected with a water pump, and a plurality of atomizing nozzles are installed on the water conduit.

Preferably, an air homogenizing disc and a demister are further arranged in the purification tower, and the demister is located above the air homogenizing disc.

Preferably, two the flabellum of drainage fan is the arc form, and the flabellum direction of rotation of two drainage fans is opposite.

Preferably, the angle between each dust collecting sheet and the guide block is 25-60 degrees, and a plurality of parallel grooves are formed in the downward surface of each dust collecting sheet 7.

The utility model has the advantages that:

1. through setting up the drainage fan, the collection grey piece, devices such as water conservancy diversion piece, when gaseous follow air inlet gets into, its self kinetic energy can promote the drainage fan and rotate, can guide gaseous downward flow when the drainage fan that is close to air inlet one side rotates, make its movement path through the position of water conservancy diversion piece on the collection grey piece, the collection grey piece becomes certain angle setting with the water conservancy diversion piece, because large granule dust is great at motion in-process inertia, so can be kept off by the collection grey piece at the in-process that the gas flows, and gather with the reaction liquid that purifies the bottom of the tower and sink to the major diameter granule, then deposit at the purification tower bottom, through the flow direction of control gas, can increase filterable effective time.

2. Through setting up devices such as transducer, heat exchange tube, water pump, the heat exchange tube is with the heat exchange to the cooling water in the gas, and this part heat conversion is the electric energy for the water pump power supply through the transducer again, can not cause harmful effects to follow-up purification process's device because of high temperature after the waste gas cooling on the one hand, reduces device life, and on the other hand heat energy can cyclic utilization be the water pump energy supply, has reduced the consumption of the energy.

To sum up, the utility model discloses simple structure, reasonable in design promotes the drainage fan through the motion of gas self and changes its flow direction, has increased effective reaction time to a large amount of heats that can the gaseous carrying of make full use of, for device power supplies such as water pumps, have reduced unnecessary resource consumption.

Drawings

FIG. 1 is a schematic structural diagram of an air purification device for a coal-fired thermal power plant according to the present invention;

fig. 2 is a partial schematic structural view of an ash collecting sheet in an air purification device for a coal-fired thermal power plant.

In the figure: 1 cooling water tank, 2 purifying towers, 3 dust collecting nets, 4 air homogenizing discs, 5 heat exchange pipes, 6 drainage fans, 7 ash collecting sheets, 8 flow guide blocks, 9 demisters, 10 atomizing nozzles, 11 flow control plates, 12 water guide pipes, 13 transducers, 14 liquid storage tanks and 15 water pumps.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, an air purification device for coal-fired thermal power factory, including coolant tank 1, purifying column 2 and liquid reserve tank 14, be provided with air inlet and deashing mouth on the tower wall of purifying column 2, two drainage fans 6 are installed to the symmetry on the inside wall of purifying column 2, and the line between two drainage fans 6 coincides mutually with the central axis of air inlet, gaseous self kinetic energy can drive drainage fan 6 and rotate, be provided with water conservancy diversion piece 8 on the interior diapire of purifying column 2, and water conservancy diversion piece 8 is located two drainage fans 6 under, one side that water conservancy diversion piece 8 is close to the air inlet evenly is provided with a plurality of ash-collecting fin 7.

The utility model discloses in, be provided with heat exchange tube 5 in the purifying tower 2, and coolant tank 1 links to each other with the one end of heat exchange tube 5 through the pump machine, and the other end of heat exchange tube 5 runs through the lateral wall of purifying tower 2 and is connected with the inlet tube that has transducer 13, and transducer 13 can turn into the electric energy with heat energy, and the outlet pipe of transducer 13 is connected with the water inlet of liquid reserve tank 14, and the delivery port of liquid reserve tank 14 has water pump 15 through water piping connection.

The flow control plate 11 is fixedly installed in the purification tower 2, a plurality of dust collecting nets 3 are symmetrically arranged on the flow control plate 11, a water guide pipe 12 is arranged on a fixing frame above the flow control plate 11, the water guide pipe 12 is connected with a water pump 15, a plurality of atomizing nozzles 10 are installed on the water guide pipe 12, the smaller the water mist particles sprayed by the atomizing nozzles 10 are, the better the reaction effect of alkaline reaction liquid and acidic materials in gas is, and the finer the water mist particles are, the more the small particle dust is easily gathered into a group.

Still be equipped with even gas dish 4 and defroster 9 in the purifying column 2, and defroster 9 is located the top of even gas dish 4, and even gas dish 4 makes gaseous dispersion, avoids gaseous from 9 same positions of defroster to influence the defogging effect through influencing.

The fan blades of the two drainage fans 6 are arc-shaped, the rotating directions of the fan blades of the two drainage fans 6 are opposite, and the arc-shaped fan blades are more beneficial to disturbing the flow direction of gas.

The angle between each dust collecting sheet 7 and the flow guide block 8 is 25-60 degrees, a plurality of parallel grooves are formed in the downward surface of each dust collecting sheet 7, the dust collecting sheets 7 are obliquely arranged, large-diameter particles can be stopped down by utilizing the inertia of the particles, and the grooves can prevent the particles from being blown away by subsequent gas.

The utility model discloses during the use, gaseous follow air inlet entering, its self kinetic energy can promote drainage fan 6 to rotate, drainage fan 6 near air inlet one side can guide gaseous downward flow when rotating, make its movement path pass through the position of collection grey piece 7 on water conservancy diversion piece 8, collection grey piece 7 and water conservancy diversion piece 8 become certain angle setting, because large granule dust inertia is great in the motion process, so can be kept off by collection grey piece 7 in the process that the gas circulates, and gather to the major diameter granule with the reaction liquid of purifying column 2 bottom, then deposit in purifying column 2 bottom, because water conservancy diversion piece 8 is the curve design, so can gather gas to second drainage fan 6 department, second drainage fan 6 makes it from the right side upward movement;

the high-temperature gas is contacted with the heat exchange tube 5, cooling water flows in the heat exchange tube 5, therefore, the gas transfers heat to the cooling water, the temperature of the gas is reduced, the influence of overhigh temperature on the service life of devices such as the water diversion tube 12, the atomizing spray head 10 and the like in the subsequent purification process is prevented, the cooling water transfers heat to the energy converter 13, the energy converter 13 can be formed by a thermoelectric power generation piece or other devices with higher conversion efficiency, and the heat is converted into electric energy to supply power for the water pump 15;

after the gas is filtered for the second time by the dust collecting net 3, the carried large particulate matters are remained, the water pump 15 transports the reaction liquid in the liquid storage tank 14 to the purifying tower 2 through the water conduit 12, the reaction liquid is atomized by the atomizing nozzle 10 and then sprayed out, the acidic substances in the gas react with the alkaline solution, the generated reactant falls downwards, then the clean gas is dispersed through the gas homogenizing disc 4, and the water in the gas is discharged from the outlet at the top of the purifying tower 2 after being discharged through the demister 9.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A air purification device for coal-fired thermal power factory, including coolant tank (1), purifying tower (2) and liquid reserve tank (14), its characterized in that, be provided with air inlet and deashing mouth on the tower wall of purifying tower (2), two drainage fans (6) are installed to the symmetry on the inside wall of purifying tower (2), and the line between two drainage fans (6) coincides mutually with the central axis of air inlet, be provided with water conservancy diversion piece (8) on the interior diapire of purifying tower (2), and water conservancy diversion piece (8) are located two drainage fans (6) under, one side that water conservancy diversion piece (8) are close to the air inlet evenly is provided with a plurality of ash collecting sheet (7).

2. The air cleaning apparatus for a coal-fired thermal power plant according to claim 1, wherein a heat exchange pipe (5) is provided in the purification tower (2), and the cooling water tank (1) is connected to one end of the heat exchange pipe (5) by a pump, the other end of the heat exchange pipe (5) penetrates through the side wall of the purification tower (2) and is connected to the water inlet pipe of the transducer (13), the water outlet pipe of the transducer (13) is connected to the water inlet of the liquid storage tank (14), and the water outlet of the liquid storage tank (14) is connected to a water pump (15) by a water pipe.

3. The air purification device for coal-fired thermal power plant according to claim 2, wherein a flow control plate (11) is fixedly installed in the purification tower (2), a plurality of dust collecting nets (3) are symmetrically arranged on the flow control plate (11), a water conduit (12) is fixed on an upper fixing frame of the flow control plate (11), the water conduit (12) is connected with a water pump (15), and a plurality of atomizing nozzles (10) are installed on the water conduit (12).

4. The air purification device for the coal-fired thermal power plant according to claim 1, wherein an air homogenizing disc (4) and a demister (9) are further arranged in the purification tower (2), and the demister (9) is located above the air homogenizing disc (4).

5. The air purification device for a coal-fired thermal power plant according to claim 1, wherein the blades of the two flow guiding fans (6) are both arc-shaped, and the rotation directions of the blades of the two flow guiding fans (6) are opposite.

6. The air purification device for the coal-fired thermal power plant as recited in claim 1, wherein the angle between each ash collecting sheet (7) and the flow guide block (8) is 25 ° -60 °, and a plurality of parallel grooves are formed on the downward surface of each ash collecting sheet (7).