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AGRO AGRO PULPING MACHINERY PVT LTD
ISO9001:2O15

BIOMASS WASHER
FIELD OF THE INVENTION:

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This Invention relates to an equipment for removal of Sand, Mud, Stones, Adherent Silica, Chlorides, Ash, Soluble Salts, Gums and other Inherent materials frorrrthe Biomass like Wheat Straw, Rice Straw, Bagasse, Corn Stalk, Cotton Stalk, Corn Cobs, Sarkanda, Wood chips, etc., and to make it suitable for Bio Ethanol, Food grade Pulp & Paper production. The presence of these materials affects the Pulp production process^and falso\,the Biomass to Ethanol conversion in the Hydrolysis process by consuming aSditibnal-chemicals, power, steam & water.
BACKGROUND OF THE INVENTION:
Biomass like Wheat Straw, Rice Straw, Bagasse, 'Corn Stalk, Cotton Stalk, Sarkanda, Corn cobs, Wood chips etc., are collected'Mrom the_Jields and hence comes with many contraries like Sand, Mud, Stones, Adherent/Silica/Asn> Further due to usage of Pesticides and fungicides for the crops the remains,of-the"Used chemicals stick with the Biomass. As a result of which the Biomass has Soluble Salfs^Chlorides etc.; These contraries needs to be removed before making pulp / bio ethanol especially^while making food grade pulp.
Wet Cleaning equipments like Hydra pulpers, Paddle Washers are known to be used for removal of Inherent materials in>theJ3iomass. In these equipments the Biomass is washed and beaten up to loosen thet contraries. The beaten Biomass and the contraries are together discharged at the.same tirrje^By doing so most of the Biomass is drained out along with the contraries.
Similar equipment like Paddle washers, which are used for removing contraries from the Biomass has a gentle slope at the Bottom Trough. A scavenging chain provided at the bottom of the trough removes the settled contraries to a Dual Discharge chute at the bottom. Very Frequent maintenance of the equipment is required due to issues like Chain getting stuck up & corrosion of the chain. This leads to frequent stoppage of the system and hence reducing the production rate.
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/ y^ ISO 9001:2015

Likewise due to lack of sufficient discharge of the contraries at a very frequent rates, the contraries are taken over along with the Biomass to the next stage of the production process. Where the presence of these contraries causes the system an additional power, steam and water consumption. Thereby affecting the productivity and end product quality. ^
BIOMASS WASHER has been designed with the following concept.
1. Efficient washing of the Biomass and for removal of contraries^
2. Very less Loss of Biomass along with the contraries drained afthe'bottom of Washer.
3. Sufficient time provision for settlement of Contraries by gravity and no moving parts.
4. Timely and automatic removal of heavy contraries at thesbottonriv^

5. Single equipment with combination of Biomass was'hlngN"& contraries removal.
OBJECTS OF THE INVENTION:
03
Biomass Washer, the present^inventionjias7 been designed with the principal object
being to remove 85% of ContrariesJrdm Biomass and make it available for Pulp & Bio Ethanol
gj) production with the following advantag'es.^V

1. Biomass with heavy contraries>chloride & Adherent silica content can be washed efficiently. The washed Biomass (witK^5%Nrempval of contraries) can be processed further for Pulp'& Bio Ethanol production. v'v )i
2. The heavy contraries settle_d-at the bottom are removed automatically by Timer based Valves.

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3. The water (drained out of the Biomass washer can be reused back in the equipment thus making the water requirement less. , 4. The Rollers provided in the equipment Beats, washes and conveys the Biomass at a time in an efficient way
5. The Variable speed driven Rollers are provided for treating different Biomass content with variable agitating speeds thus enabling the flow of the Biomass in a uniform and controlled way.
Jji 6. Problem Free running of the equipment with less rotating part and less maintenance, thus
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AGRO
i^~ ISO9001:2015

AGRO PULPING MACHINERY PVT LTD

SUMMARY OF THE INVENTION:

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The Invention provides an equipment for the Efficient washing of Biomass. The washed Biomass will have less Contraries (85% removal) thus making it suitable rcr-vHydrolysis process in the Bio Ethanol production & for the Digestion Process in the Pulp ProduetionsBased on the requirement of the End Biomass product, the removal efficiency can, be/urther/enhanced to 92% by an additional stage washer. The wash water co1lected/af1he end of the washer is
recycled back in the equipment with certain amount of purging^ne^resh.water. Hence the water consumption for the system is very much reduced. The ChemidalvSteam, Water and Power

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required for the Biomass treatment in the Hydrolysis process is^comparatively reduced. The
product coming out of the Hydrolysis process seems quality.
DETAILED DESCRIPTION OF THE INVENTION
to^be^very^uniform and also of better
Description /VyVsON
Feeding Chute for the Biomass'MaterialV
Washer Trough with rectangulaMopX
First angled bottom trougrvin-combination with top rectangular trough
2 Sets of Agitating Rollers^on top Rectangular trough above the first angled bottom
trough
Second angled bottom trough in combination with the top rectangular trough
'& S)
2 Sets of LooseningJioilers on top Rectangular trough above the Second angled bottom
trough!
2 Nos. 6fTimer,b'as'ed Junk trap valves at the bottom of the First angled bottom trough
2 Nos. of Timer based Junk trap valves at the bottom of the Second angled bottom
trough
Discharge Chute for the junk below the First angled Conical bottom trough
Discharge Chute for the Junk below the Second angled conical bottom trough
Water spray connection in the Discharge chute below the First angled conical bottom
trough

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AGRO AGRO PULPING MACHINERY PVT LTD
ISO9001:2015 . .

12. Water spray connection in the Discharge chute below the Second angled conical bottom trough
13. Water Level Adjustment gate
14. Drive for Agitating Rollers
15. Drive for Loosening Rollers
16. Equipment Support Structure
17. Structural RCC Columns
18. Biomass Discharge Chute
The top washer rectangular trough, Agitating Rollers, Loosening rollers, First angled Bottom Trough, Second angled Bottom trough, RolletsTbrive^System are all constructed in a single structure. The entire equipment will be/Supported on Structural RCC columns (S. No. 17)
EQUIPMENT OPERATION:
The Biomass (Bagasse, Wheat Straw Rice Straw, Cotton Stalk, Sarkanda, Corn Stalk,
g) Corn Cobs, Wood Chips) is fed intonrve^Feeding chute (S.No. 1) of the Biomass Washer (Not
shown in the drawing) by a Belt'Gbnve.yor at the top. The Biomass is diluted by addition of
Fresh Water or recycled water\fedjn the Feeding chute through a pipeline (Not shown in the
r^ drawing). The diluted Biomass is agitated and rinsed by two Agitating rollers (S.No. 4). Due to
the heavy agitation action thejcontraries sticking to the Biomass gets loosened and heavy particles get settled^dowrVb.y^gravity to the bottom of the first angled bottom trough (S.No. 3). These settled heavy particles passes through the Discharge Chute (S.No. 9) and are periodically removed_byythe timer based Junk Trap valves (S.No. 7). Water is Sprayed periodically through the Water spray connection (S. No. 11) provided in the Discharge chute for keeping the chute clean without jamming. Further due to the agitation action of the Agitating Rollers the chlorides in the Biomass fiber gets dissolved, washed and removed with the wash ■ water.
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AGRO
f^^ ISO 9001:2015

AGRO PULPING MACHINERY PVT LTD

The washed, clean Biomass is further carried over to the second section of the Washer Trough. The Loosening rollers {S.No. 6) provided in this section has a Loosening action to wash and convey the material. Due to vigorous loosening action the BiomassNvithvany remaining

contraries gets loosened and settles down at the bottom of the second angledjDottom trough (S.
No. 5). The fibre is very much loosened making it available for easy cooking/witrtthe chemicals
.itSn's.
O \s f I )r & Steam. Also any remaining chlorides will get removed. The settl&d^contraries at the bottom
pass though the Discharge Chute (S. No. 10) and are periodically>emoved by the timer based Junk Trap valves (S.No. 8). Water is sprayed periodically throu§hJhe^Water spray connection

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(S. No. 12) provided in the Discharge chute for keeping the/chute clean without jamming.
The washed Biomass is discharged along with the wateras overflow at the Biomass
3/w.asner trc ate-(S^Jo\ 1
Discharge Chute (S. No. 18) at the top end of the/washer trough. The overflow level can be
3) at the discharge end.
adjusted with provision of water Level adjustment gate-(S
The equipment has sufficient residence time for-the Biomass to gets soaked with the water which thereby benefits the Digestion/process o/ Hydrolysis process. The speed of the rollers can be controlled by variable,speed^or aJoetter washed output from the Biomass washer.

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AGRO AGRO PULPING MACHINERY PVT LTD
ISO 9001:2015

CLAIMS:
1. An equipment "Biomass Washer" for washing and cleaning of Biomass (Bagasse, Wheat Straw, Rice Straw, Cotton Stalk, Sarkanda, Corn Stalk, Corn Cobs, Wood Chips,, etc.,) for removal of Sand, Mud, Stones, Adherent Silica, Chlorides, Ash, Soluble Salts, Gums and other Inherent materials collectively called Contraries for making Bioethanol, Food grade pulp, Pulp & Paper with the following concept

a. Efficient washing of the Biomass and for removal of coritrari£s.,(85?/o Removal).
b. Very less Loss of Biomass along with the contraries dra'ined^af the bottom of Washer.
c. Sufficient time provision for settlement of Contraries'by gravity and no movinq parts.
d. Timely and automatic removal of heavy contraries at^he bottom
e. Single equipment with combination of BiomasVwashing & contraries removal.
f. Recycling and using wash water. /N. I v7 [J
The Biomass washer claimed in claim (l wher§>based on the end product requirement
contraries removal can be further the water consumption.
The "Biomass Washer "claimed irrclaim 1-2 comprising of the following parts
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S.No. Description
1. Feeding-Chute for the Biomass Material
2. Washer Trough with rectangular top
3. First angled^bottom trough in combination with top rectangular trough
4. 2 Sets of Agitating Rollers on top Rectangular trough above the first angled bottom trough
5. Second angled bottom trough in combination with the top rectangular trough
6. 2 Sets of Loosening Rollers on top Rectangular trough above the Second angled bottom trough
7. 2 Nos. of Timer based Junk trap valves at the bottom of the First angled bottom trough
3
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9. 10.
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12.
13. 14. 15. 16. 17. 18.

2 Nos. of Timer based Junk trap valves at the bottom of the Second angled bottom
trough -.
Discharge Chute for the junk below the First angled conical bottom trough Discharge Chute for the Junk below the Second angled conical bottom^tirough? Water spray connection in the Discharge chute below the First Wgled^conical bottom
trough S^
Water spray connection in the Discharge chute below the^econd angled conical bottom
trough
Water Level Adjustment gate
Drive for Agitating Rollers
Drive for Loosening Rollers
Equipment Support Structure
Structural RCC Columns
Biomass discharge chute
The top washer rectangular; trc^gfi>Agitating Rollers, Loosening rollers, First angled
Bottom Trough, Second anglecTBottom trough, Rollers Drive System are all constructed
in a single structure. The^entire equipment will be supported on Structural RCC columns
(S. No. 17) ^^ ^^

The Biomass washer claimed in claim 1-3, wherein the operation of the equipment is as
foiiowsyO-.J ]<^^^y
The Biomass (Bagasse, Wheat Straw, Rice Straw, Cotton Stalk, Sarkanda, Corn Stalk, Corn Cobs>.and Wood Chips, etc.,) is fed into the Feeding chute (S.No. 1) of the Biomass Washer (Not shown in the drawing) by a Belt Conveyor at the top. The Biomass is diluted by addition of Fresh Water or recycled water fed in the Feeding chute through a pipeline (Not shown in the drawing). The diluted Biomass is agitated and rinsed by two Agitating rollers (S.No. 4). Due to the heavy agitation action the contraries sticking to the Biomass gets loosened and heavy particles get settled down by gravity to

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AGRO AGRO PULPING MACHINERY PVT LTD
ISO 9001:2015

The bottom of the first angled bottom trough (S.No. 3). These settled heavy particles passes through the Discharge Chute (S.No. 9) and are periodically removed by the timer based Junk Trap valves (S.No. 7). Water is Sprayed periodicallyjhrough the Water spray connection (S. No. 11) provided in the Discharge chute foXkeeping the chute clean without jamming. Further due to the agitation action of the'Agitating^Rollers the chlorides in the Biomass fiber gets dissolved, washed and/emoved.with the wash water.
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The washed, clean Biomass is further carried over to the second section of the Washer Trough. The Loosening rollers (S.No. 6) provided in this section^ias a Loosening action to wash and convey the material. Due to vigorous Loosening-action the Biomass with any remaining contraries gets loosened and settles/down^at the bottom of the second angled bottom trough (S. No. 5). The fibre is very^much loosened making it available for
easy cooking with the chemicals & Steam^Also any remaining chlorides will get
removed. The settled contraries at the^bottorrrpassjthough the Discharge Chute (S. No.
X X \ / 10) and are periodically removed by the>timer basea Junk Trap valves (S.No. 8). Water
is Sprayed periodically througfvthe Water spray connection (S. No. 12) provided in the
Discharge chute for keeping/thexhute cle.anj/vithout jamming.
/ ( A\ X^ The washed Biomass is discharged^a!ong with the water as overflow at the Biomass
Discharge Chute (S. No. 18) afthe top end of the washer trough. The overflow level can
be adjusted with provision-of^water Level adjustment gate (S. No. 13) at the discharge
end. V V X/
The Biomass washer claimed in claim 1-4 where the speed of the rollers can be controlled^byjvariablejspeed to make it suitable for specific Biomass type & Quantity and for a better and uniform washed output.

6. The Biomass washer claimed in claim 1-5 has sufficient residence time for the Biomass to gets soaked with the water which thereby benefits the Digestion process or Hydrolysis process.
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