Colliery dust purifies plan

1, colliery dust purifies plan overview

The basis chooses the property that coal works, colliery dust receives mechanical power influence to wave in the workshop medicinal powder, wave commonly after coming loose to control height to 4.5-5m slight dust in suspension at the period of time in sky. And more dust are less than 1 μ M commonly, the dust grain of above of 2.5 μ M but by intercept of nasal cavity, guttural mucous membrane, and the grain under 2.5 μ M is not easy by nasal cavity, guttural intercept, especially the following grain of 0.4 μ M can follow pulmonary alveolus to enter blood through breath, accumulation is formed on hemal wall, cause serious harm to the worker.

(1) granularity is subtle: Grime particle is small, soot submits fractional form, bead diameter is between 0.1-1 micron. (although be drying dust,also have agglutinant) .

(2) endanger to human body: Dust particle is lesser divide what affect a person to while human body respiratory system produces harm, also be being met is neurological, it is certain to also have to hemopoietic system and immune system power sea.

The place on put together is narrated, to this second remove dust the project, the can more effective processing that undertakes workshop dust, and link an user produce a situation actually, our design program is narrated as follows.

The first part: Basically will produce dirt dot to make a part sealed cover, make changeover of environment yield dust is close partly condition.

The 2nd part: Remove dust the machine that wash gas overspreads will sealed place to form negative pressure state through conduit and dust collection, because will original dust pounds what wind pressure arises outside excessive escapes instead by aperture diameter pipeline inspiratory remove dust inside the machine that wash gas

The 3rd part: Remove dust the machine that wash gas passes a series of complex solid state – liquid state – detached technology, formation slime water the platoon reachs sink, the air after purifying indoor or outdoor amount to mark to discharge.

2, colliery dust purifies plan design

2.1 221 leather belt and 219, 220 crusher

2.1.1 221 leather belt is superior 215, 216 hand-picked of leather belt suffer makings reprint leather belt, two fall makings chute, chute place already did sealed processing, but sealed cover is a bit short, and sealed and lax, stock falls by altitude, because collision, extruding attacks a dust, elegant to pollution is caused inside the workshop. Place of nose of 221 leather belt already had a share sealed cover, but sealed and lax, stock falls to face of workshop other place directly downward, the dust that produces here but direct by sealed cover vacant place enters a workshop to cause pollution.

2.2.2 have two crusher by chute of 221 leather belt, it is respectively 219 with 220 crusher, crusher already did sealed processing, coal is in crusher produces bigger coal dust in broken process, pressing as a result of what crusher interior arises, grime classics crusher is discharged into makings chute and sealed aperture pollution is caused inside the workshop.

2.2.3 basises spot circumstance, undertake be administeringed integratedly to leather belt and crusher, the sealed cover lengthen that makings chute will suffer to be in on leather belt above all undertakes further sealed processing, nose sealed cover has handling, add outfit block shade farther sealed. Remove dust equipment chooses AB-S model remove dust the machine that wash gas, will 215 hand-picked leather belt falls makings chute incorporates with 219 crusher choose to remove dust the machine that wash gas, will 216 hand-picked leather belt falls makings chute incorporates with 220 crusher choose to remove dust the machine that wash gas, nose of 221 leather belt chooses to remove dust alone the machine that wash gas. Choose 3 to remove dust in all the machine that wash gas, type is same.

2.2.4 remove dust AB-S-6# of the machine that wash gas, handle wind force 12000m3/h, 15KW-4 of electric machinery power extremely, fan is special explosion proof electric machinery, electronic-controlled box spot is controlled (explosion proof) . Remove dust the machine that wash gas is placed go up in platform of the machine that wash gas, platform relies on bracket to prop up, bracket uses 10# channel to make.

2.2.5 collieries dust purifies plan to administer sketch map to be as follows:

The 2.2.6 side that enter makings chute in crusher just open aspiration mouth and leather belt the proper place of sealed cover opens aspiration mouth to undertake collection coal dust, when the mechanic that wash gas is made, mix to crusher negative pressure is formed inside sealed cover, crusher is broken the action of dust classics negative pressure inside the grime of generation and sealed cover, circle of square ground of conduit of classics dust collection, bend, day enter remove dust air inlet of the machine that wash gas, collection coal dust washs air plane to clean via removing dust purify, the gas after purifying discharges a workshop outside, grime and purify fluid (water) shirt-sleeve, classics dehydrator arranges sewage disposal system inside.

2.2.7 makings chute joint is reached to add screen pack and observation hole in conduit and sealed cover, action is segregation large and sundry enter remove dust the machine that wash gas and facilitating observation.

2.2.8 remove dust the machine that wash gas adds outfit vibrating absorber, remove dust of the machine that wash gas into, canal giving wind increases fast flexible connection implement, prevent to remove dust vibration of the machine that wash gas causes pipeline resonance.

2.2.9 wind conduit is outspread to the workshop exterior, the gas after purifying is discharged directly.

3, detail and budget

Remove dust the machine that wash gas construction of system and functional brief introduction

Main body structure

Remove dust lead plane of system of the engine that wash gas has fission and design of integral module type. Whole system by impeller unit and dehydration unit two major module are comprised. All components are found a place for be inside the systematic case that the surface handles through spray paint. Crust uses white to be moved for mass-tone, concise and beautiful.

Remove dust the machine that wash gas is one kind is medium with catharsis fluid, grain of subtle small droplet makes catharsis fluid pulverization below the action of mechanical power, carry fixed rate bump or the action of emulsifying agent and dust particle are united in wedlock, achieve depurative goal.

Remove dust the machine that wash gas is by lead plane, water system all, electronic-controlled the part such as the system is comprised. Remove dust of the machine that wash gas purify mechanism, the syringe in equivalent or grave of prep above article, it is to pass impeller to rotate the high speed that forms blade and air current makes relative to motion dust gas and catharsis fluid mix, happen in mixture process a series of, mixed physical effect, the harmful particle that makes air medium and catharsis fluid union are achieved purify a purpose. Dehydration share is entered at the same time with air after catharsis fluid completes mixture catharsis action, classics dehydrate is detached, the gas after purifying emits into atmosphere directly, the catharsis current after depart answers sedimentation basin, classics precipitation or after filtering, be circulated to use afresh, mud oar is fixed eduction, yi Ke arranges sewage disposal system directly.

Remove dust the idea with traditional breakthrough of the machine that wash gas, those who accomplished the discharge of pressure of modular, gas of efficiency is nonlinear choice, achieved basically inferior 0 discharge, and lowest of specific power consumption, investment the smallest, adaptability (high temperature, tall wet, agglutinant, explosion proof) the strongest. Additional, this product can deploy transducer to use, energy-saving can amount to 30 above.

After joining gush to drench, remove dust the graph of contrail of dust solid grain of interior of the machine that wash gas, can see from inside the graph after joining gush to drench, contrail of dust solid grain produces apparent change, trochoid becomes relatively before gush drenchs, did not become smooth the rule, because dust solid grain drenchs in osculatory gush,this is after water mist droplet, be added by place of water mist droplet, quality greatens, force increases. Dust solid grain passes area of impeller blades roll coming back above all, grain of herein dust solid and herein of water mist droplet are acuteness motion, collision confluence herein is very apparent, bump the water film that is covered to blade to catch directly for the most part, the air containing dirt of the majority is finished in impeller area purify, the shirt-sleeve body of grain of solid of the rest dust, dust solid grain and water mist grain and water mist grain can continue to move ahead, arrive be caught again near guide vane, the dust solid grain that there is thimbleful only finally escapes from platoon a place with a draught go out, remove dust the effect is apparent still.

Remove dust the machine that wash gas catchs market efficiency to the dust grain of different bead diameter

Wash gas machine to removing dust in preamble inside the bead way that spreads a dust grain that when undertaking analytic study, chooses is 5 μ M, passing an analysis is to see remove dust efficiency is very good, but this is intuitionistic only see from cloud atlas, have trade off study without specific data. And when dust catcher works actually, the dust bead diameter that its purify is size is differ, dust catcher is right of the dust grain of different bead diameter catching efficiency is different. Because this parts,be μ of M/18 of μ of M/15 of M1 of μ of M/10 of μ of M/8 of μ of M/5 of 1 μ M1, 2 μ , 12 μ to bead diameter / the dust grain of 20m μ M and 25m μ M undertakes study an analysis.

Before adopting, the face sheds simulative photograph to be the same as measure to three-phase, set dust bead way respectively above each data, install example statistic to calculate in platoon a place with a draught piece remove dust efficiency. The result after the course calculates expresses place to show as follows:

Remove dust the machine that wash gas to grain of dust of different bead diameter purify efficiency

Through analysing the result of the watch, reach should remove dust wash air plane to be more than 8 μ M to bead diameter purifying efficiency still is very tall. When dust bead diameter is more than 10 μ M, its can be purified inside the machine that wash gas, of the imperceptible dust that is less than 5 μ M to bead diameter purify efficiency to have bit of on the low side, but overall for its remove dust performance is very good still.

The real measure that washs gas machine according to removing dust builds three-dimensional geometry model in Solidworks, delimit in WORKBECH cent gets interior sheds a model washing gas machine, undertake in region of field of the convection in ICEM software reseau differentiates, the air in using Fluent software to wash gas machine to removing dust respectively finally is single-phase circulate field, air two-phase of grain of one dust solid flows reach air. Three-phase of droplet of one water mist sheds dust solid grain to be worth imitate into linage. Get after through imitate computation analyses:

(1) removes dust through the analysis a distributinging circumstance flows inside the machine that wash gas, in blade entrance place existence flows 2 times reach, in exit of impeller blades flow path and deflector place existence backset and faze flow.

(2) differs through trade off study droplet of mist of the water when mural face reflectivity is removing dust the distributinging circumstance inside the machine that wash gas, choose emissivity to be respectively 0. 1 with 0. The circumstance of 9. Grain of final analysis dust is removing dust the chroma of particle size distribution inside the machine that wash gas reachs its and pressure distributing chroma is similar, demonstrative dust grain is right of air current follow the gender is very good.

(3) uses Ou La. Lagelang looks. Lagrange model undertakes numeric imitate to washing the three-phase inside air plane to flow, after drenching gotten in season, remove dust after graph of contrail of grain of solid of dust of interior of the machine that wash gas and the plan of contrail of dust solid grain that did not impose gush to drench undertake contrast, reach remove dust of the machine that wash gas remove dust efficiency is very good still.

(Of the dust grain that 4) is not aimed at different bead diameter in cent purify efficiency to undertake what should wash gas machine comparative reaching purify remove dust efficiency is first-rate.