Engineers Report Pto
Engineers Report Pto
Engineers Report Pto
ENGINEER’S REPORT
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Engineer’s Report for Application for Permit to Operate Air Pollution Installation of VM Agbayani Rice Mill
The Rice milling is the process that helps in removal of hulls and brans
from paddy grains to produce polished rice. Palay or paddy (threshed unmilled
rice) is placed into the main receiving palay bin for storage and then fed into
the single deck palay sifter for sieving and removal of impurities. The cleaned
palay is loaded into the single bucket elevator and moved to the bin for palay
for storage and then it goes to the paddy husker for primary husking or husk
cracking. The mixture of brown grains and unhusked paddy goes through the
V-type “Pinawa” sifter for sieving to remove the husks and for separation of
brown rice and unhusked palay and then the unhusked palay are loaded into a
single bucket elevator and transferred to the bin(for palay return) for storage
and from there it goes to the paddy huller for rehusking. From the huller, the
husks are simultaneously sunctioned by the double C.I. exhaustor to a husk
storage bin located outside the building while the mixture of brown rice and
unhulled grains of brown rice are deposited into the double bucket elevator
(for hulled and unhulled grains) and brought to the storage bin (for hulled and
unhulled grains). then the mixture of hulled and unhulled grains through the
air trap cleaners for further removal of impurities and to the preliminary paddy
separator and eventually to the paddy separator for the separation of the hulled
grains from the unhulled ones. The unhulled grains are returned to the huller
for further removal of husk through the single bucket elevator (for unpolished
rice-Pinawa). All the hulled grains are deposited into the storage bin for
unpolished and then convered to the polishing cone for first polishing pass and
eventually to the single deck rice sifter for sieving and separation of the
polished and semi-polished grains. The semi-polished ones are loaded in the
single bucket elevator are deposited into the storage bin for semi-polished rice
and then moved to the air trap cleaner for removal of impurities.
Simultaneously, the bran (coarse and fine) is collected by the cyclone rice
collectors. From the air trap cleaner, the polished, cleaned and sooled rice is
sunctioned to the double B.I. exhaustor and finally deposited into the storage
bin for cleaned, cooled and polished rice - the finished product.
A.3 List of Air Pollution Sources Equipment (APSE) and Corresponding Air
Pollution Control Facilities (APSF) and Description of Use/Mode of Operation of
Each
a. Palay Sifter - a machine used to separate the palay or paddy from hay
and other impurities by running/sifting them through sieves of predetermined size.
A device with sieve run by machine for winnowing palay to remove the
impurities.
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Engineer’s Report for Application for Permit to Operate Air Pollution Installation of VM Agbayani Rice Mill
c. Paddy Huller/Husker - a machine that breaks and removes the husk or
palay, the process of which can cause air pollution with flying fine husk and other
impurities.
g. Rice Sifter - a machine used to separate the polished from the semi-
polished/broken grains by sifting/running them through a series of sieves of
different sizes, the process of which can cause air pollution with flying fine hulls.
c. Air Trap Cleaner - enclosed devices used to trap and remove dust and
other impurities from the grains, which polished grains from the 1st pass polishing
cone go through.
d. Dust Aspirator - instrument installed at the 2nd pass polishing cone for
collecting hull dust by suction that would otherwise pollute the air.
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Engineer’s Report for Application for Permit to Operate Air Pollution Installation of VM Agbayani Rice Mill
B.1 Specifications
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Engineer’s Report for Application for Permit to Operate Air Pollution Installation of VM Agbayani Rice Mill
A mechanical dryer machine removes water from wet grains by forcing either
ambient air or heated air through the grain bulk. The same quantity of grain is recycled
through the dryer until the final moisture content is reached.
Wet grains are loaded to the intake hopper of the elevator that conveys grains to the
dryer. Air is drawn into the dryer by an axial fan. The air is heated by a biomass-fed furnace
before it enters the dryer. Grains moving down the drying columns are exposed to hot air and
moisture is removed as hot air passes across the drying columns. The exhaust moist air is
sucked by the fan out the dryer. On the other hand, discharged grains are conveyed by the
auger to the elevator and are recirculated to the top portion of bagging bin. Lastly, dried
grains will be directed to the sacks.
CESAR MARASIGAN
PCO
___________________________
Mechanical/Chemical Engineer