阅读说明：本技术 地下矿山回风井高压静电除雾降尘系统及设计方法 (Underground mine returnairshaft high-pressure electrostatic demisting dust falling system and design method ) 是由 贾敏涛 华绍广 任甲泽 居伟伟 王爽 贾安民 吴冷峻 周伟 鲁智勇 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种地下矿山回风井高压静电除雾降尘系统及设计方法,整流器(2)与矿区外部电源(1)通过电缆连接后设置在回风井(11)外侧的工业场地内；电晕线(4)自上而下竖向垂直布置在回风井(11)的井筒圆心位置,粉尘水雾捕集极板(6)沿回风井(11)壁面上一周均匀布置,绝缘陶瓷砖(7)安装在回风井(11)壁面和粉尘水雾捕集极板(6)中间；环形供水管(9)固定并环绕在粉尘水雾捕集极板(6)上,其上间隔设置一组喷头(8)。本发明集回风井除雾和降尘功能为一体,结构简单,既能有效捕集回风井外排污风的粉尘和白色“烟”状水蒸气,达到污染物零排放,又不增加通风系统阻力,节约通风系统能耗。(The invention discloses a kind of underground mine returnairshaft high-pressure electrostatic demisting dust falling system and design method, rectifier (2) and mining area external power supply (1) after cable connection by being arranged in the industrial sites on the outside of returnairshaft (11)；Corona wire (4) is vertically arranged vertically on the pit shaft center location of returnairshaft (11) from top to bottom, dust water mist trapping pole plate (6) is evenly arranged for one week along returnairshaft (11) wall surface, and insulating ceramics brick (7) is mounted on returnairshaft (11) wall surface and dust water mist trapping pole plate (6) is intermediate；Annular water supplying pipe (9) is fixed and is looped around in dust water mist trapping pole plate (6), one group of spray head (8) of interval setting thereon.The present invention integrates returnairshaft demisting and depositing dust function, and structure is simple, can effectively trap the dust and white " cigarette " shape vapor of returnairshaft outlet waste air, reach zero release of pollutant, and do not increase ventilating system resistance, save ventilating system energy consumption.)

1. a kind of underground mine returnairshaft high-pressure electrostatic demisting dust falling system, it is characterised in that it is to be by high direct voltage System, Electrostatic Control system, ionization depositing dust demister system and spray irrigation system in combination are constituted: the high direct voltage generating system Comprising rectifier (2), rectifier (2) and mining area external power supply (1) after cable connection by being arranged on the outside of returnairshaft (11) In industrial sites；The Electrostatic Control system includes transformer and power control switch (3)；The ionization depositing dust demisting system System is made of the corona wire (4) as cathode, the dust water mist trapping pole plate (6) as anode and insulating ceramics brick (7), electricity Hachure (4) is vertically arranged vertically on the pit shaft center location of returnairshaft (11) from top to bottom, and dust water mist trapping pole plate (6) edge is returned It is evenly arranged within one week on ventilating shaft (11) wall surface, insulating ceramics brick (7) is mounted on returnairshaft (11) wall surface and dust water mist trapping pole Plate (6) is intermediate；Transformer is connected with one end of power control switch (3) with rectifier (2), the other end be vertically arranged vertically on The corona wire (4) of the pit shaft center location of returnairshaft (11) connects；The spray irrigation system is by fixing and being looped around powder Annular water supplying pipe (9) in dirt water mist trapping pole plate (6) and one group of spray head (8) structure being arranged at intervals on annular water supplying pipe (9) At annular water supplying pipe (9) and water supplying system for mine are connected with each other, and are controlled by ball valve；Transformer and power control switch (3) are adjusted Voltage between corona wire (4) and dust water mist trapping pole plate (6), and then adjust the electric field strength in returnairshaft (11).

2. underground mine returnairshaft high-pressure electrostatic demisting dust falling system as described in claim 1, it is characterised in that: in corona wire (4) it is fixed push-and-pull rod (10) that well head corona wire is set around from center, in corona wire at returnairshaft (11) well head on top (4) lower part setting is straightened plummet (5), and solid from plummet (5) top to returnairshaft (11) surrounding setting returnairshaft inside corona wire Push-and-pull rod (10 ') are determined, to ensure that corona wire (4) is arranged vertically and is not influenced to swing by return air wind field.

3. underground mine returnairshaft high-pressure electrostatic demisting dust falling system as claimed in claim 2, it is characterised in that: the well Corona wire fixed push-and-pull rod (10 ') is all that right-angled intersection is arranged inside mouth corona wire fixed push-and-pull rod (10), returnairshaft, and ten Word crosspoint and corona wire (4) join.

4. underground mine returnairshaft high-pressure electrostatic demisting dust falling system as claimed in claim 3, it is characterised in that: annular supplies water Manage (9) 6~18 spray heads (8) evenly distributed in the circumferential direction, spray head direction intersects 30 with dust water mist trapping pole plate (6)~ 60 ° water spray, spray head (8) water spray are discontinuous working condition downwards.

5. the design method of the underground mine returnairshaft high-pressure electrostatic demisting dust falling system such as claim 1,2,3 or 4, feature It is using following technical scheme:

Corona wire (4), dust water mist trapping pole plate (6) lower end are concordant, and the length of dust water mist trapping pole plate (6) is L2；Dust Water mist trapping pole plate (6) upper end need to reserve enough length L1 apart from returnairshaft (11) well head；It is steamed with charged dust and water The quality of aerated particle be m, carried charge q, the dust and vapor particle that quality m, carried charge are q from inside diameter be D's Returnairshaft (11) is with speed v₀On discharge into the electric field that voltage is U, particle its movement after entering electric field is vertical at the uniform velocity straight Line movement, horizontal direction are attached to dust water mist trapping pole with the class level throw motion that initial velocity is zero uniformly accelrated rectilinear motion Its distance y vertically moved is calculated according to following formula on plate (6):

To guarantee to be adhering completely on entrapment plate with charged dust and vapor particle, then it is enough to should ensure that L1 has Length, and L2 > y takes L1=(1.3~1.7) y, L2=(1.8~2.3) y.

6. the design method of underground mine returnairshaft high-pressure electrostatic demisting dust falling system as claimed in claim 5, feature It is: L1=1.5y, L2=2y.

Technical field

The invention belongs to industrial dedustings, demisting technical field, and in particular to a kind of underground mine returnairshaft outlet waste air drop The design method of dirt, highly humid air condensed water dehumidification system and the system, especially suitable for Temperature Deep high humidity underground mine and Concentration underground mine dusty.Both it can eliminate and drain into the smoke generated to the cold after earth's surface outside highly humid air, and reduce return air The dust concentration of well outlet waste air, and do not increase ventilating system resistance.

Background technique

Underground mine returnairshaft carries discharge underground high temperature and humidity dust-laden dirt wind action, and waste air is discharged by returnairshaft With the sharply release of temperature and pressure after earth's surface, air be rapidly achieved " guttation " condensation after saturation state formed it is dense white Mist, returnairshaft waste air speed is high, the thick fog of tens of meters of likeness in form " chimney " can be formed above well head, visual impact range is more than Several kilometers, nearby residents is allowed to generate in unrelieved feeling.Meanwhile a large amount of dust also drains into atmosphere outside together, causes serious ring Border pollution.

With the promotion of Public environmental attitude, people constantly enhance the concern of own circumference pollution sources.Mine periphery Resident complains to environmental protection administration, bargh's right-safeguarding event is gone to happen occasionally, and returnairshaft outlet waste air not only destroys environment, but also damage The economic benefit and social image of Hai Liao enterprise.

It is retrieved according to pertinent literature, patent of invention " underground mine returnairshaft high temperature is saturated distinguished and admirable dehumidification device and method " (CN201710144136.3) a kind of underground mine returnairshaft high temperature is described to be saturated distinguished and admirable condensation and dewfall, avoid generating in well head The dehumidification device and method of " white smoke " phenomenon.But it is had the disadvantage in that by further analysis, the program

1) dehumidifying area is formed in earth's surface setting air duct, dehumidifying area installs filter screen, forms larger ventilating system in well head Local resistance, ventilation energy consumption increase by 10% or more；

2) filter screen dehumidification efficiency is low, and smoke can weaken, but is difficult to completely remove；

3) returnairshaft wind speed is high (10~15m/s), and wet type dustfall efficiency is relatively low, and outlet dust concentration is still higher.

Summary of the invention

The purpose of the present invention, saturated air shape high aiming at existing underground mine returnairshaft outlet waste air dust concentration At well head smoke phenomenon and prior art, there is increasing, ventilating system energy consumption, depositing dust dehumidification efficiency be low, demisting The technical problems such as effect difference, and a kind of simple structure, convenient for management, depositing dust demisting efficiency height are provided and do not increase ventilating system resistance The underground mine returnairshaft high-pressure electrostatic demisting dust falling system of power.

It is a further object of the present invention to provide the design sides of above-mentioned underground mine returnairshaft high-pressure electrostatic demisting dust falling system Method.

Above-mentioned purpose to realize the present invention, underground mine returnairshaft high-pressure electrostatic demisting dust falling system of the present invention use with Lower technical solution:

A kind of underground mine returnairshaft high-pressure electrostatic demisting dust falling system of the present invention is by high direct voltage generating system, electrostatic Control system, ionization depositing dust demister system and spray irrigation system in combination are constituted: the high direct voltage generating system includes whole Device, rectifier and mining area external power supply are flowed by being arranged in the industrial sites on the outside of returnairshaft after cable connection；Described is quiet Electric control system includes transformer and power control switch；The ionization depositing dust demister system is by the corona as cathode Line, the dust water mist trapping pole plate as anode and insulating ceramics brick are constituted, and corona wire is vertically arranged vertically on back from top to bottom The pit shaft center location of ventilating shaft, dust water mist trapping pole plate are evenly arranged for one week along returnairshaft wall surface, the installation of insulating ceramics brick Among returnairshaft wall surface and dust water mist trapping pole plate, in corona wire and dust water mist trapping pole plate (anode) after system power supply Between form powerful electric field, be ionized air molecule, moment generates a large amount of electronics and positive and negative ion, charged ion with Dust and vapor in air, which are mutually mixed, makes it with charge, and the ion with point makees orientation fortune under the action of electric field force Dynamic, dust and vapor are finally enriched in dust water mist trapping pole plate.One end and rectification of transformer and power control switch Device is connected, and the other end is connect with the corona wire for the pit shaft center location for being vertically arranged vertically on returnairshaft；The spray irrigation System is by fixing and being looped around the annular water supplying pipe in dust water mist trapping pole plate and be arranged at intervals on annular water supplying pipe One group of spray head is constituted, and annular water supplying pipe and water supplying system for mine are connected with each other, and is controlled by ball valve, according to dust water mist trapping pole plate The regular boiled water of the enrichment degree of upper dust is sprayed, and the dust being captured is rinsed.Transformer and power control switch adjust electricity Voltage between hachure and dust water mist trapping pole plate, so adjust returnairshaft in electric field strength, voltage strength can according to return Dust concentration and humid air atomization situation determine in air shaft.

In order to ensure corona wire is vertically fixed, does not swing, at the returnairshaft well head on corona wire top around from center The fixed push-and-pull rod of well head corona wire is set, and in corona wire lower part, setting is straightened plummet, and from plummet top to returnairshaft surrounding The fixed push-and-pull rod of corona wire inside returnairshaft is set, to ensure that corona wire is arranged vertically and is not influenced to swing by return air wind field.

The fixed push-and-pull rod of corona wire is all right-angled intersection inside the fixed push-and-pull rod of the well head corona wire, returnairshaft Setting, right-angled intersection point and corona wire join.

Annular water supplying pipe 6~18 spray heads evenly distributed in the circumferential direction, spray head direction and dust water mist trapping pole plate phase 30~60 ° of water sprays downwards are handed over, spray head water spray is discontinuous working condition.

Stainless steel plate can be used for the dust water mist trapping pole plate or carbon steel plate rolls into cylindrical shape；The corona wire Using tungsten or titanium matter.

The design method of underground mine returnairshaft high-pressure electrostatic demisting dust falling system of the present invention, using following technical scheme:

Corona wire, dust water mist trapping pole plate lower end are concordant, and the ionization depositing dust demister system being vertically arranged along returnairshaft must There must be enough length, if the length of dust water mist trapping pole plate is L2；Dust water mist trapping pole plate upper end is apart from returnairshaft Well head need to reserve enough length L1；Quality with charged dust and vapor particle be m, carried charge q, quality m, The dust and vapor particle that carried charge is q from inside diameter be D returnairshaft with speed v₀On discharge into voltage be U electric field In, particle its movement after entering electric field is vertical linear uniform motion, and horizontal direction is that zero even acceleration straight line is transported with initial velocity Dynamic class level throw motion is attached to its distance y vertically moved in dust water mist trapping pole plate and calculates according to following formula:

To guarantee to be adhering completely on entrapment plate with charged dust and vapor particle, then it should ensure that L1 has Enough length, and L2 > y take L1=(1.3~1.7) y, L2=(1.8~2.3) y；L1=1.5y, L2 are taken under normal circumstances =2y.

Laboratory research and commerical test verifying show underground mine returnairshaft high-pressure electrostatic demisting dust falling system of the present invention And design method is after the above technical solution is adopted, has the positive effect that:

(1) high-pressure electrostatic efficiency of seizing dust reaches 95% or more, realizes dust zero discharge, and dehumidification efficiency is high, substantially eliminates back Ventilating shaft outlet " chimney " shape thick fog；

(2) returnairshaft well head structures in prior art are eliminated, the prior art is overcome and increases ventilating system well The shortcomings that mouth local resistance, reduce by 10% or more ventilating system energy consumption；

(3) device structure is simple, and later period Operation, Administration and Maintenance is convenient, and scene is not take up industrial sites, and construction cost is low.

Detailed description of the invention

Fig. 1 is underground mine returnairshaft high-pressure electrostatic demisting dust falling system structure arrangement schematic diagram of the present invention；

Fig. 2 is the top view of Fig. 1.

Appended drawing reference are as follows: 1-mining area external power supply；2-rectifiers；3-transformers and power control switch；4-coronas Line (cathode, using tungsten or titanium matter)；5-plummets；6-dust water mist trapping pole plates (anode)；7-insulating ceramics bricks；8-sprays Head；9-annular water supplying pipes；10-well head corona wires fix push-and-pull rod；The fixed rigidity of corona wire is drawn inside 10 '-returnairshafts Bar；11-returnairshafts.

Specific embodiment

To better describe the present invention, with reference to the accompanying drawing to underground mine returnairshaft high-pressure electrostatic demisting depositing dust of the present invention System and design method are described in further detail.

Underground mine returnairshaft high-pressure electrostatic demisting dust falling system structure arrangement schematic diagram of the present invention as shown in Figure 1 is simultaneously tied It closes Fig. 2 and finds out that underground mine returnairshaft high-pressure electrostatic demisting dust falling system of the present invention is by high direct voltage generating system, electrostatic control System, ionization depositing dust demister system and spray irrigation system in combination processed are constituted.

The high direct voltage generating system includes rectifier 2, and rectifier 2 is the dress by AC conversion at direct current It sets, rectifier 2 and mining area external power supply 1 after cable connection by being arranged in the industrial sites in 11 outside of returnairshaft.

The Electrostatic Control system includes transformer and power control switch 3, transformer and power control switch) one End is connected with rectifier 2, and the upper end of the other end and the corona wire 4 for the pit shaft center location for being vertically arranged vertically on returnairshaft 11 connects It connects, the voltage between corona wire 4 and dust water mist trapping pole plate (anode) 6 is adjusted by transformer and power control switch 3, into And the electric field strength in returnairshaft 11 is adjusted, voltage can be determined according to dust concentration in returnairshaft 11 and humid air atomization situation.

The ionization depositing dust demister system be by as cathode corona wire 4, as anode dust water mist trap pole Plate 6 and insulating ceramics brick 7 are constituted, and corona wire 4 is vertically arranged vertically on the pit shaft center location of returnairshaft 11, dust from top to bottom It is evenly arranged within water mist trapping pole plate 6 one week along 11 wall surface of returnairshaft, insulating ceramics brick 7 is mounted on 11 wall surface of returnairshaft and dust Among water mist trapping pole plate 6.Well head corona wire is arranged around from center at 11 well head of returnairshaft on 4 top of corona wire to fix Push-and-pull rod 10, in 4 lower part of corona wire, plummet 5 is straightened in setting, and from 5 top of plummet into 11 surrounding of returnairshaft setting returnairshaft Portion's corona wire fixes push-and-pull rod 10 ', to ensure that corona wire 4 is arranged vertically and is not influenced to swing by return air wind field.The well The fixed push-and-pull rod 10 ' of corona wire is all right-angled intersection setting, cross friendship inside the fixed push-and-pull rod 10 of mouth corona wire, returnairshaft Crunode and corona wire 4 join.Powerful electric field is formed between corona wire 4 and dust water mist trapping pole plate 6 after system power supply, is made Air molecule is ionized, and moment generates a large amount of electronics and positive and negative ion, charged ion and the dust and vapor phase in air Mutually mixing makes it with charge, and the ion with point makees directed movement under the action of electric field force, and dust and vapor are finally enriched with In trapping pole plate 6.

Corona wire 4, dust water mist trapping pole plate 6,7 lower end of insulating ceramics brick are concordant, dust water mist trapping pole plate 6, insulation Ceramic Tiles 7 are contour, and must have enough length along the ionization depositing dust demister system that returnairshaft 11 is vertically arranged, if dust water The length of mist trapping pole plate 6 is L2, and 6 upper end of dust water mist trapping pole plate has lotus apart from 11 well head length in reserve L1 of returnairshaft The dust and vapor particle of electricity are attached to the distance y that it is vertically moved in dust water mist trapping pole plate, generally take L1= 1.5y, L2=2y.

The spray irrigation system be by fix and be looped around annular water supplying pipe 9 in dust water mist trapping pole plate 6 and 12 spray heads 8 on annular water supplying pipe 9 are arranged at intervals on to constitute, adjacent spray head plane included angle is 30 °, annular water supplying pipe 9 with Water supplying system for mine is connected with each other, and is controlled by ball valve；45 ° of water sprays downwards are intersected in 8 direction of spray head with dust water mist trapping pole plate 6, The water spray of spray head 8 is discontinuous working condition.It is sprayed according to the regular boiled water of enrichment degree of dust in dust water mist trapping pole plate 6 Leaching, rinses the dust being captured.Dust-containing water under rinsing, downstream to underground return air main entry, is arranged along 11 wall surface of returnairshaft into underground Water system.