CN202605957U

CN202605957U - Smoke purification device for ultrasonically agglomerating PM2.5 particles

Info

Publication number: CN202605957U
Application number: CN 201220219683
Authority: CN
Inventors: 吴福儿
Original assignee: University of Shaoxing
Current assignee: University of Shaoxing
Priority date: 2012-05-16
Filing date: 2012-05-16
Publication date: 2012-12-19
Anticipated expiration: 2022-05-16

Abstract

The utility model discloses a smoke purification device for ultrasonically agglomerating PM2.5 particles. The smoke purification device comprises an ultrasonic agglomerating atomizer and an electric dust remover, and the ultrasonic agglomerating atomizer comprises an ultrasonic agglomerating atomizer water replenishing port, a fire coal smoke inlet, an ultrasonic vibration plate, a cavity, a liquid discharging port and an ultrasonic agglomerating atomizer outlet. Fire coal smoke is subjected to desulfuration and denitration and then enters the ultrasonic agglomerating atomizer through the fire coal smoke inlet, water mist, negative oxygen ions and the PM2.5 particles in the inflow fire coal smoke are combined to be agglomerated into larger particles and then subjected to dust removing through the electric dust remover, and the smoke enters a chimney and is then discharged from the chimney. According to the smoke purification device for ultrasonically agglomerating the PM2.5 particles, a large amount of fine particles contained in the fire coal smoke can be removed, and the smoke purification device is simple in structure and low in cost.

Description

The smoke eliminator of ultrasonic reunion PM2.5 particle

Technical field

The utility model relates to the purifier of PM2.5 particle, the smoke eliminator of especially ultrasonic reunion PM2.5 particle.

Background technology

At present, China's primary energy structures shape be that the general layout of main fuel used to generate electricity can not change in the recent period with coal.The electric power in the whole nation about 80% is from heat power station, and the environmental pollution that coal burning produces has seriously restricted the development better sooner of China's energy industry and even whole national economy.

Coal-fired flue-gas contains a large amount of subparticles (particle diameter is less than the 5O micron), and wherein the ratio of PMl0 can reach 40%, and ultra-fine grain PM2.5 accounts for 40%-70% among the PM10.PM2.5 is mainly derived from the high-temp combustion of coal, is the maximum composition of smoke poisoning evil property, can adsorb multiple noxious material and pass through the through lung of respiratory tract, even get into hematological system, causes diseases such as cardiovascular disease.Therefore fine particle (PM2.5) pollutes has become the outstanding atmospheric environment problem of China; The coal-burning power plant is the primary pollution source that causes that PM2.5 content increases in China's atmospheric environment; PM2.5 is meant that diameter is less than or equal to 2.5 microns particle in the atmosphere, is also referred to as and can goes into the lung particle.Compare with thicker Atmospheric particulates, the PM2.5 particle diameter is little, is rich in a large amount of poisonous, harmful substances and the time of staying in atmosphere is long, fed distance is far away, thereby bigger to the influence of health and atmosphere quality.Can directly get into bronchus after being inhaled into human body, disturb the Gas Exchange of lung, cause the disease that comprises aspects such as asthma, bronchitis and cardiovascular disease, can damage the ability of hemoglobin delivery of oxygen, forfeiture blood.Concerning the patient of anaemia and blood circulation disorder, possibly produce serious consequence.For example can increase the weight of respiratory disease, even cause heart diseases such as congestive heart failure and coronary artery.

Large coal-fired power plant all is equipped with the dust-removal and desulfurizing denitrification apparatus, to SO ₂, NO _XYet obtained certain effect with the emission control of dust., the discharging of pellet PM2.5 but there are not effective control measure, cause a large amount of fine graineds to enter in the atmosphere, cause serious environmental problem.The technology that removes that can suck particle PM2.5 mainly contains 2 kinds: a kind of is to improve fine grain arresting efficiency through improving existing cleaner, and cost is high, and difficulty is big; Another kind is through physicochemical method, it is reunited earlier or grow up into bulky grain to remove with electric cleaner again.

The utility model content

The purpose of the utility model is: a kind of smoke eliminator of ultrasonic reunion PM2.5 particle is provided, can removes a large amount of subparticles that contain in the coal-fired flue-gas, simple in structure, cost is lower.

For realizing above-mentioned purpose, the utility model can be taked following technical proposals:

The smoke eliminator of a kind of ultrasonic reunion PM2.5 particle of the utility model comprises ultrasonic reunion atomizer, the electric cleaner that outlet is communicated with chimney; Said ultrasonic reunion atomizer comprises: ultrasonic reunion atomizer water supplement port, and the coal-fired flue-gas air inlet is arranged at the ultrasonic vibration plate of ultrasonic reunion atomizer bottom; Be used for the splendid attire aqueous solution and be positioned at the cavity of said ultrasonic vibration plate top, be positioned at the leakage fluid dram of said cavity bottom, and the outlet of ultrasonic reunion atomizer; Said ultrasonic reunion atomizer outlet is communicated with the import of said electric cleaner, and in said ultrasonic reunion atomizer, the ultrasonic vibration plate carries out ultrasonic vibration to the aqueous solution; Produce a large amount of water smokes, negative oxygen ion; PM2.5 particle in the coal-fired flue-gas of water smoke, negative oxygen ion and inflow combines, and is agglomerated into larger particles, gets into electric cleaner through ultrasonic reunion atomizer outlet; Through getting into chimney after the electric cleaner dedusting, discharge by chimney.

Compared with prior art the beneficial effect of the utility model is: owing to adopt technique scheme, comprise ultrasonic reunion atomizer, the electric cleaner that outlet is communicated with chimney; Said ultrasonic reunion atomizer comprises: ultrasonic reunion atomizer water supplement port; The coal-fired flue-gas air inlet is arranged at the ultrasonic vibration plate of ultrasonic reunion atomizer bottom, is used for the splendid attire aqueous solution and is positioned at the cavity of said ultrasonic vibration plate top; Be positioned at the leakage fluid dram of said cavity bottom; And ultrasonic reunion atomizer outlet, said ultrasonic reunion atomizer outlet is communicated with this structure with the import of said electric cleaner; The negative oxygen ion stream bump of the coal-fired flue-gas air-flow of horizontal movement and motion straight up; PM2.5 in the coal-fired flue-gas condenses and grows up, and get into electric cleaner and captured by electric cleaner, thus the purpose of a large amount of PM2.5 particles that realization removes in the coal-fired flue-gas to be contained.The utility model is simple in structure, only needs critical pieces such as ultrasonic reunion atomizer, electric cleaner, and the scope of application is extensive, and cost is lower.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the theoretical physical model sketch map of Fletcher.

The specific embodiment

As shown in Figure 1, the smoke eliminator of a kind of ultrasonic reunion PM2.5 particle of the utility model comprises ultrasonic reunion atomizer; The electric cleaner 7 that outlet is communicated with chimney 8; Said ultrasonic reunion atomizer comprises: ultrasonic reunion atomizer water supplement port 1, and coal-fired flue-gas air inlet 2 is arranged at the ultrasonic vibration plate 4 of ultrasonic reunion atomizer bottom; Be used for the splendid attire aqueous solution 3 and be positioned at the cavity of said ultrasonic vibration plate 4 tops; Be positioned at the leakage fluid dram 5 of said cavity bottom, and ultrasonic reunion atomizer outlet 6, said ultrasonic reunion atomizer outlet 6 is communicated with the import of said electric cleaner 7.

The concrete grammar that uses the smoke eliminator of described ultrasonic reunion PM2.5 particle that coal-fired flue-gas is purified:

Removed SO through desulfuring and denitrifying apparatus ₂, NO _XAfter coal-fired flue-gas, get into ultrasonic reunion atomizer through said coal-fired flue-gas air inlet 2;

In ultrasonic reunion atomizer, 4 pairs of aqueous solution of ultrasonic vibration plate 3 carry out ultrasonic vibration, produce a large amount of water smokes, negative oxygen ion, and the PM2.5 particle in the coal-fired flue-gas of water smoke, negative oxygen ion and inflow combines, and is agglomerated into larger particles;

The water of evaporation is replenished by ultrasonic reunion atomizer water supplement port 1, uses rear portion gradation micronic dust can be deposited in the aqueous solution 3 for a long time, and sewage is discharged by leakage fluid dram 5;

Coal-fired flue-gas after above-mentioned steps is handled gets into electric cleaner 7 through ultrasonic reunion atomizer outlet 6, through getting into chimney 8 after electric cleaner 7 dedustings, is discharged by chimney 7.

As preferably, be added with washing agent in the described aqueous solution 3, adding proportion is 3% (weight).

As shown in Figure 2; Theoretical according to the classical heterogeneous nucleation of Fletcher; The steam drop nucleus that forms that on fine grained, condenses is a spherical part; Nuclear is made up of 2 spheres, and the formation of ball liquid nucleus is by 2 spherical surfaces and the decision of contact angle between the two, and fine grained can be regarded the smooth, spherical particle as.

Claims

1. the smoke eliminator of a ultrasonic reunion PM2.5 particle is characterized in that: comprise ultrasonic reunion atomizer, the electric cleaner (7) that outlet is communicated with chimney (8); Said ultrasonic reunion atomizer comprises: ultrasonic reunion atomizer water supplement port (1), and coal-fired flue-gas air inlet (2) is arranged at the ultrasonic vibration plate (4) of ultrasonic reunion atomizer bottom; Be used for the splendid attire aqueous solution (3) and be positioned at the cavity of said ultrasonic vibration plate (4) top; Be positioned at the leakage fluid dram (5) of said cavity bottom, and ultrasonic reunion atomizer outlet (6), said ultrasonic reunion atomizer outlet (6) is communicated with the import of said electric cleaner (7); In said ultrasonic reunion atomizer; Ultrasonic vibration plate (4) carries out ultrasonic vibration to the aqueous solution (3), produces a large amount of water smokes, negative oxygen ion, and the PM2.5 particle in the coal-fired flue-gas of water smoke, negative oxygen ion and inflow combines; Be agglomerated into larger particles; Get into electric cleaner (7) through ultrasonic reunion atomizer outlet (6),, discharge by chimney (7) through getting into chimney (8) after electric cleaner (7) dedusting.