AIR POLLUTION CONTROL AIR POLLUTION CONTROL FROM RICE SHELLERS- A FROM RICE SHELLERS- A

CASE STUDYCASE STUDY

Presented by: Dr S.M Ahuja, Associate Professor,

SLIET,Longowal , indiasandeepmahuja@gmail.com

919814695429

RICE SHELLER LAYOUT

POLLUTION FROM PADDY SILOPOLLUTION FROM PADDY SILO

AvseqRICE01_split001.mpegAvseqRICE01_split001.mpeg

SOURCES OF DUST EMISSIONS

SUCTION FROM ALL THE DUST SUCTION FROM ALL THE DUST EMISSION POINTSEMISSION POINTS

NO. OF POINTSNO. OF POINTS

PADDY SILOPADDY SILO 22 ELEVATORSELEVATORS 11 FAN OVER SCREENS CONTAINED IN A WOODEN FAN OVER SCREENS CONTAINED IN A WOODEN

BOXBOX11

SCREENSSCREENS 22 HUSKERSHUSKERS 33 PADDY SEPARATORPADDY SEPARATOR 11 TOTAL 10TOTAL 10AvseqRICE02_split001.mpegAvseqRICE02_split001.mpeg

CONTAINMENT OF DUSTCONTAINMENT OF DUST

COVERING OVER COVERING OVER HUSKERS (FRONT)HUSKERS (FRONT)

COVERING OVER COVERING OVER HUSKERS (BACK)HUSKERS (BACK)

HOODS

SUCTION FROM

DIFFERENT POINTS

COVERINGS

CONTAINMENT SYSTEMCONTAINMENT SYSTEM

COVERING BY INSTALLING SUITABLE COVERING BY INSTALLING SUITABLE HOODS / ENCLOSURES WHILE ENSURING HOODS / ENCLOSURES WHILE ENSURING WORKABILITY.WORKABILITY.

DUCTING USING PLASTIC PIPE SO THAT DUCTING USING PLASTIC PIPE SO THAT PRESSURE DROP IS MINIMAL.PRESSURE DROP IS MINIMAL.

EFFECTIVE SUCTION USING I.D. FAN. EFFECTIVE SUCTION USING I.D. FAN. ID FAN SPECIFICATIONID FAN SPECIFICATION

AIR FLOW RATEAIR FLOW RATE -- 4000 CUBIC METER 4000 CUBIC METER PER HOUR AT 25 degCPER HOUR AT 25 degC

PRESSURE DROPPRESSURE DROP -- 6 INCHES OF WATER6 INCHES OF WATER DUST CONCENTRATION 3600 mg/Nm3DUST CONCENTRATION 3600 mg/Nm3

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SAILENT FEATURES

OF CYCLONE SEPARATOR

AIR POLLUTION CONTROL AIR POLLUTION CONTROL DEVICEDEVICE

CRITICAL ANALYSIS OF DUSTCRITICAL ANALYSIS OF DUSTPARTICLE DENSITY- 1.8 grams/ccPARTICLE DENSITY- 1.8 grams/ccMEDIAN AERODYNAMIC DIAMETER- 14 micrometersMEDIAN AERODYNAMIC DIAMETER- 14 micrometers

BASED ON COMPUTER-AIDED DESIGN (CAD) OF CYCLONE SEPARATORBASED ON COMPUTER-AIDED DESIGN (CAD) OF CYCLONE SEPARATORLEITH-LICHT MODEL FOR ESTIMATING EFFICIENCYLEITH-LICHT MODEL FOR ESTIMATING EFFICIENCYIOZIA-LEITH MODEL FOR ESTIMATING PRESSURE DROPIOZIA-LEITH MODEL FOR ESTIMATING PRESSURE DROPKALEN-ZENZ MODEL FOR OPTIMIZATIONKALEN-ZENZ MODEL FOR OPTIMIZATION

UNIQUE DIMENSION RATIOSUNIQUE DIMENSION RATIOSESTIMATED DUST COLLECTION EFFICIENCY- 93%ESTIMATED DUST COLLECTION EFFICIENCY- 93%OVERALL DUST COLLECTION EFFICIENCY- 94%OVERALL DUST COLLECTION EFFICIENCY- 94%DUST LOAD- 250 Kg OF DUST DAILYDUST LOAD- 250 Kg OF DUST DAILY750 TONS DUST COLLECTED DAILY FROM RICE SHELLERS OF PUNJAB750 TONS DUST COLLECTED DAILY FROM RICE SHELLERS OF PUNJAB(ABOUT 50000 RICE SHELLERS IN INDIA)(ABOUT 50000 RICE SHELLERS IN INDIA)

CYCLONE SEPARATORCYCLONE SEPARATOR

DUST.mpeg

COMPARISON WITH OTHER COMPARISON WITH OTHER TECHNOLOGIESTECHNOLOGIES

COST EFFECTIVECOST EFFECTIVE NO ADDITIONAL MOTOR REQUIRED.NO ADDITIONAL MOTOR REQUIRED.

HP REQUIRED HP REQUIRED -- 3 TO 43 TO 4 HP REQUIREDHP REQUIRED -- 1515

SINGLE HIGH EFFICIENCY CYCLONE SINGLE HIGH EFFICIENCY CYCLONE INSTEAD OF TWO CYCLONE INSTEAD OF TWO CYCLONE SEPARATORS AND A BAG HOUSESEPARATORS AND A BAG HOUSE

ECONOMIC GAINS DUE TO ECONOMIC GAINS DUE TO ADOPTION OF THIS ADOPTION OF THIS

TECHNOLOGYTECHNOLOGY IMPROVEMENT IN THE IMPROVEMENT IN THE

QUALITY OF BRAN.QUALITY OF BRAN. INCREASE IN THE LIFE OF INCREASE IN THE LIFE OF

RUBBER ROLLS.RUBBER ROLLS. INCREASE IN THE LIFE OF INCREASE IN THE LIFE OF

SHELLING MACHINERYSHELLING MACHINERY CUMULATIVE BENEFIT RS. CUMULATIVE BENEFIT RS.

100,000/- PER SEASON100,000/- PER SEASON PAY BACK PERIOD LESS PAY BACK PERIOD LESS

THAN A SHELLING SEASON.THAN A SHELLING SEASON.

RICE SHELLER WITH APCD

ROTARY AIR LOCK

HOOD OVER PADDY SILO

EMISSION STANDARDS FOR EMISSION STANDARDS FOR RICE SHELLERSRICE SHELLERS

EMISSION STANDARDS FOR SPM EMISSION STANDARDS FOR SPM (mg/Nm3)- 750*(mg/Nm3)- 750*

* * THE EXISTING UNITS NOT MEETING THE PRESCRIBED SITING GUIDELINES THE EXISTING UNITS NOT MEETING THE PRESCRIBED SITING GUIDELINES

WILL MEET A STACK STANDARD OF 500 mg/Nm3. WILL MEET A STACK STANDARD OF 500 mg/Nm3.

IRREGULARITIES IN THE IRREGULARITIES IN THE INDUSTRYINDUSTRY

WRONG ROTARY WRONG ROTARY AIR LOCKAIR LOCK

IMPROPER IMPROPER CENTRAL TAPER CENTRAL TAPER MANIFOLD MANIFOLD

CONTINUED:

CYCLONE SEPARATOR WITHOUT ANY HOPPER AND ROTARY AIR LOCK

PRECAUTIONS/TROUBLE PRECAUTIONS/TROUBLE SHOOTINGSHOOTING

PROPER DRYING OF PADDY.PROPER DRYING OF PADDY. USE OF INSULATED HEATING TAPES USE OF INSULATED HEATING TAPES

IN CASE OF UNAVOIDABLE REASONS.IN CASE OF UNAVOIDABLE REASONS. MANOMETER FOR MEASURING MANOMETER FOR MEASURING

PRESSURE DROP.PRESSURE DROP. REPLACEMENT OF BAGS FITTED REPLACEMENT OF BAGS FITTED

BELOW THE ROTARY AIR LOCK.BELOW THE ROTARY AIR LOCK.

REPLICATION OF THE REPLICATION OF THE TECHNOLOGYTECHNOLOGY

DEMONSTRATION POLLUTION CONTROL DEMONSTRATION POLLUTION CONTROL UNITS PARTIALLY FUNDED BY SMALL UNITS PARTIALLY FUNDED BY SMALL SCALE INDUSTRIAL DEVELOPMENT BANK SCALE INDUSTRIAL DEVELOPMENT BANK OF INDIA.OF INDIA.

TECHNOLOGY APPLIED -TECHNOLOGY APPLIED - 2000 UNITS2000 UNITS RETROFITTED 250 APCDs (CYCLONE RETROFITTED 250 APCDs (CYCLONE

SEPARATORS) BY PROVIDING COMPUTER SEPARATORS) BY PROVIDING COMPUTER AIDED CUSTOMISED DESIGNS FOR AIDED CUSTOMISED DESIGNS FOR INDIVIDUAL INDUSTRYINDIVIDUAL INDUSTRY

TECHNOLOGY HAS ALSO BEEN APPROVED TECHNOLOGY HAS ALSO BEEN APPROVED BY PUNJAB POLLUTION CONTROL BOARD BY PUNJAB POLLUTION CONTROL BOARD

THANKSTHANKS