Wood Pellet Trading

TRADERSbiomass covers the trading of the world’s most common standard & non-standard wood pellet products which either falls into Woody or Non-Woody types.

Technical Specification of  Wood Pellet Products: (Standard Wood Pellet)

*Exact technical specification of Non-standard wood Pellet products can be inserted on the Electronic Trading System and published by suppliers.

Origin & Source

A1 A2 B Analysis Method
1.1.3 Stemwood 1.1.1 Whole trees without roots 1.1 Forest plantation & other virgin wood ISO 17225-1
1.2.1 Chemically untreated wood residues a 1.1.3 Stemwood 1.2 By products and residues from wood processing industry
1.1.4 Logging residues 1.3.1 Chemically untreated used wood
1.2.1 Chemically untreated wood residues a
Elemetrary Composition

Unit

A1

A2

B

Analysis Method

Chlorine, Cl

w % dry

0,02

0,02

0,03

ISO 16994

Sulphur, S

w % dry

0,04

0,05

0,05

ISO 16994

Nirogen, N

w % dry

0,3

0,5

1,0

ISO 16948

Copper, Cu

mg/kg dry

10

10

10

ISO 16968

Chromium, Cr

mg/kg dry

10

10

10

ISO 16968

Arsenic, As

mg/kg dry

1

1

1

ISO 16968

Cadmium, Cd

mg/kg dry

0,5

0,5

0,5

ISO 16968

Mercury, Hg

mg/kg dry

0,1

0,1

0,1

ISO 16994

Lead, Pb

mg/kg dry

10

10

10

ISO 16968

Nickel, Ni

mg/kg dry

10

10

10

ISO 16968

Zinc, Zn

mg/kg

100

100

100

ISO 16968

Ash melting
behaviour f

oC

Should be stated

Should be stated

Should be stated

CEN/TS 15370

Physical Parameter

Unit

A1

A2

B

Analysis Method

Diameter, D b

mm

6 ( ± 1 )

6 ( ± 1 )

6 ( ± 1 )

 ISO 17289

Length, L c

mm

3,15 ≤ L ≤ 40

3,15 ≤ L ≤ 40

3,15 ≤ L ≤ 40

 ISO 17289

Bulk Density, BD

kg/m3

600

600

600

 ISO 17828

Net Calorific Value, Q

MJ/Kg

16,5

16,5

16,0

 ISO 18125

Moisture, M

w %

10

10

10

 ISO 18134-1, ISO 18134-2

Fines, F d

w %

1

1

1

 ISO 18846

Mechanical Durability, DU

w %

97,5

97,5

96,5

 ISO 17831-1

Ash, A

w %

0,7

1,2

≤ 2,0

 ISO 18122
  1. Negligible levels of glue, grease and other timber production additives (< 1 w-%) used in sawmills during the production of timber and timber product from virgin wood is acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.
  2. Selected size D06 or D08 of pellets to be stated.
  3. Amount of pellets longer than 40 mm can be 1 w-%. Maximum length shall be < 45 mm.
  4. At factory gate in bulk transport (at the time of loading) and in small (up to 20 kg)and large sacks (at time of packing or when
    delivering to end-user). Fines less than 3,15 mm are screened by hand according to standard EN 15210-1.
  5. Type of additives to aid production, delivery or combustion (e.g. pressing aids, slagging inhibitors or any other additives like starch, corn flour, potato flour, vegetable oil,…). Also, additives which are used after production, before unloading to end-user storages, shall be stated similarly (type and amount).
  6. All characteristic temperatures (shrinkage starting temperature (SST), deformation temperature (DT), hemisphere temperature (HT) and flow temperature (FT) in oxidizing conditions should be stated.
Origin & Source
I1 I2 I3 Analysis Method
1.1.3 Stemwood 1.1.1 Whole trees without roots 1.1 Forest plantation & other virgin wood ISO 17225-1
1.2.1 Chemically untreated wood residues a 1.1.3 Stemwood 1.2 By products and residues from wood processing industry
1.1.4 Logging residues 1.3 Used wood
1.2.1.5 Bark
1.2.1 Chemically untreated wood residues a

 

Elemetrary Composition

Unit

I1

I2

I3

Analysis Method

Nirogen, N

w % dry

0,3

0,5

1,5

ISO 16948

Sulphur, S

w % dry

0,05

0,05

0,05

ISO 16994

Chlorine, Cl

w % dry

0,05

0,05

0,05

ISO 16994

Arsenic, As

mg/kg dry

2

2

6

ISO 16968

Cadmium, Cd

mg/kg dry

1,0

1,0

10

ISO 16968

Chromium, Cr

mg/kg dry

15

15

15

ISO 16968

 

Physical Parameter

Unit

I1

I2

I3

Analysis Method

Diameter, D b

mm

6 ( ± 1 ), 8 ( ± 1 )

6 ( ± 1 ), 8 ( ± 1 )

6 ( ± 1 ), 8 ( ± 1 )

 ISO 17829

Length, L c

mm

3,15 ≤ L ≤ 40

3,15 ≤ L ≤ 40

3,15 ≤ L ≤ 40

 ISO 17829

Bulk Density, BD

kg/m3

600

600

600

 ISO 17828

Net Calorific Value, Q

MJ/Kg

16,5

16,0

15,5

 ISO 18125

Moisture, M

w % (wet basis)

10

10

10

 ISO 18134-1, ISO 18134-2

Fines, F d

w %

5,0

5,0

7,0

 ISOWD XXXXX

Mechanical Durability, DU

w %

96,5

96,5

97,5

 ISO 17831-1

Ash, A

w %

1,0

1,5

≤ 5,0

 ISO 18122

Ash melting
behaviour g

oC

Should be stated

Should be stated

Should be stated

CEN/TS 15370

Particle size distribution of disintegrated pellets

w-%

Should be stated

Should be stated

Should be stated

ISO 17830

  1. Negligible levels of glue, grease and other timber production additives (< 1 w-%) used in sawmills during production of timber and timber product from virgin wood are acceptable if all chemical parameters of the pellets are clearly within the limits and concentrations are too small to be concerned with.
  2. Selected size D06 or D08 of pellets to be stated. Internal particle size distribution has to be agreed between buyer and seller.
  3. Amount of pellets longer than 40 mm can be 1 w-%. Maximum length shall be < 45 mm.
  4. Type of additives to aid production, delivery or combustion (e.g. pressing aids, slagging inhibitors or any other additives like starch, corn flour, potato flour, vegetable oil,…). Also additives which are used after production, before unloading to end-user storages, shall be stated similarly (type and amount).
  5. All characteristic temperatures (shrinkage starting temperature (SST), deformation temperature (DT), hemisphere temperature (HT) and flow temperature (FT) in oxidized conditions should be stated.

PELLET FUELS INSTITUTE PRODUCT SPECIFICATION

FUEL Properties

PFI Premium

PFI Standard

PFI Utility

Testing Standard

Normative Information – Mandatory

Bulk Density

lb/cu ft

40.0-46.0

38.0-46.0

38.0-46.0

ASTM E 873

Diameter (Inches)

inch

0.23-0.285

0.23-0.285

0.23-0.285

NIST

Diameter (mm)

mm

5.84-7.25

5.84-7.25

5.84-7.25

NIST

Length ( >1.50 inch)

%

1.0

1.0

1.0

NIST

Pellets Durability Index

%

96.6

96.6

96.6

LD2668.T4 1962 Y68

Fines ( At Mill Gates)

%

0.5

0.5

0.5

 

Inorganic Ash

%

1.0

2.0

6.0

D 1102-84

Moisture

%

8.0

10.0

10.0

ASTM E 871

Chloride

ppm

300

300

300

ASTM E 776

 

Informative Only – Not Mandatory

Ash Fusion

Degree F

NA

NA

NA

ASTM D 1857

Heating Value

BTU/h

NA

NA

NA

ASTM E 711

Additives and Binders

%

NA

NA

NA

 

*Exact technical specification of Standard and Non-standard wood pellet products can be inserted on the Electronic Trading System and published by suppliers.

Properties Unit Grade 1 Grade 2 Grade 3 Grade 4
Size (Diameter) mm 6-8 6-8 6-8 6-25
Size (Length) mm ≤32 ≤32 ≤32 ≤32
Unit Volume Mass/ Bulk Density ㎏/㎥ ≥640 ≥600 ≥550 ≥500
Moisture Content % ≤10 ≤10 ≤15 ≤15
Ash Content % ≤0.7 ≤1.5 ≤3.0 ≤6.0
Fine Content % <1.0 <1.0 <2.0 <2.0
Durability % ≥97.5 ≥97.5 ≥95 ≥95
Net Caloric Value

㎉/㎏

(MJ/㎏)

≥4,300

(≥18.0)

≥4,300

(≥18.0)

≥4,040

(≥16.9)

≥4,040

(≥16.9)

Sulphur % <0.05 <0.05 <0.05 <0.05
Chlorine % <0.05 <0.05 <0.05 <0.05
Nitrogen % <0.3 <0.5 <0.7 <1.0
As ㎎/㎏ ≤1.0 ≤1.0 ≤1.0 ≤1.0
Cd ㎎/㎏ ≤0.5 ≤0.5 ≤0.5 ≤0.5
Cr ㎎/㎏ ≤10 ≤10 ≤10 ≤10
Cu ㎎/㎏ ≤10 ≤10 ≤10 ≤10
Pb ㎎/㎏ ≤10 ≤10 ≤10 ≤10
Hg ㎎/㎏ ≤0.05 ≤0.05 ≤0.05 ≤0.05
Ni ㎎/㎏ ≤10 ≤10 ≤10 ≤10
Zn ㎎/㎏ ≤100 ≤100 ≤100 ≤100
Ash melting temperature To be stated as recommendation
Other additives % <2.0 <2.0 <2.0 <2.0

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