Challenges in determination the Moisturecontent of woody biomass

Moisture Measurement

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Challenges in determination the Moisturecontent of woody biomass


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Company profile

INADCO Moisture Measurement develops and produces measuring equipment for inline and online measuring in processes with fine and coarse bulk solids.

Our specialty is the measurement of the moisture content of those bulk solids with our own unique technology, which eliminates the need the use of numerous calibration lines for each change in the product. Further we have equipment for the determination of the bulk density during the process and the weighing of product streams with a low bulk density (60 g/l – 1500 g/l) with a Beltweigher.

Because we are the developer and the manufacturer of our equipment we can, if necessary, adapt the our equipment to suit your process circumstances.

Our moisture meters achieve a very high reproducibility and accuracy which is better than any other system in the measurement in inhomogeneous bulk solids. The measuring range goes from 0,1 percent up to 60 percent.

With years of experience from a wide variety of industries and started in the potting soil industry, INADCO is now more expanding to other industries based on their experience with many products like biomass, animal feed, sand and clay, seeds, salt, glass powder and more.


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Facilities

Head office

Includes an office space, laboratory, development department and a production and testing area

Assembly and test area

Each unit undergoes an endurance test before leaving the factory

Development

Basically every system we create is with SIEMENS equipment and will be drawn 3D


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Core business of INADCO

Measuring the physical properties of Bulkmedia like woodchips, straw, miscanthus.

- Bulkdensity

- Mass

- Volume

- Moisturecontent


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Measuring during process

Moisture = ???? %


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Most known methods of measuring moisture

Drying StoveMicrowave

Capacitive Near Infra Red


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Inline Sensors

Benefits:

- Contactless- Fast- More properties

Disadvantages:

- Measures only surfaces- Sensitive for environments- Expensive

MicrowaveCapacitive

Benefits:

- Simple- Easy to handle- Low cost

Benefits:

- Simple- Easy to integrate- Reasonable price

Disadvantages:- Inaccurate

- Not usable in product with a lot of air inclusions- Not usable in product with hard particles

Disadvantages:- Small surface

- Not usable in product with a lot of air inclusions - Not usable in product with changing bulkdensìty

Price range:

€ 500,00 - € 1.000,00

Price range:

€ 3.500,00 - € 6.500,00

Price range:

€ 12.000,00 - € 30.000,00

Near Infra Red


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Quality of measurement with different technologies


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Influence of Bulkdensity with High Frequency methods

sensor sensor

Higher compression = more moisture particles per volume


Weight

50.11 kg

Weight

49.88 kg

Why?

* The real weight of

this person is 75 kg

How accurate is this scale?

Is this a reliable weighing scale?

* 0.23 kg ?

* NO !!!

Conclusion

Two digits behind the decimal point does not always mean that the value is true

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Reliability of the measurement data

The same person is measured twice


Moisturecontent???

Result: Moisturecontent = 45%

Drying at 103 °C for 24h(EN14774-1:2009)

Could be!

Conclusion

There are more extractables in wood than just water which will vaporize at 103 °C like oils and resins. The real amount of water is thus <45%.1 day in a drum of petrol

The wooden block was pretreated

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Reference measurement. With the drying stove?


STEM BRANCH

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Reliability of the measurement


3 days drying at 60 °C Temperature at 110 °C

+ 2.2%Moisture [%]

Temperature [°C]

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Evaporation of water and …..


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Sample deviation against average from a Drying-stove


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The INADCO Method

The measuring electrode in the wall of the measuring cylinder measure a large thick shell of

product on the inner side of the cylinder


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The INADCO Method in action

This video can be seen at: www.inadco.nl/taal/nederlands/video.htm

http://www.inadco.nl/taal/nederlands/video.htm


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Other measuring-layouts

Measuring in a funnel Measuring through a belt


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Validation


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Thank you for your interest and attention.

For any questions or comments you can always contact us.

INADCOMeerheide 18

5521 DZ Eersel The NetherlandsPhone: +31 (0) 497-517291

Fax: +31 (0) 497-517469E-mail: [email protected]

Web: www.inadco.nl

Documents

Challenges in determination the Moisturecontent of woody biomass