TORREFACTION REACTOR

"Innovation Starts With Us"

Drying Technology

Using dry superheated steam as the heating medium to replace the traditional air/oxygen methods of drying. This dramatically improves the efficiency of the drying process whilst at the same time using a safe, invisible dry gas being used at atmospheric pressure.

The thermal advantages are revolutionising the process drying industry. Achieving validated energy saving against conventional systems, minimal percentage drying losses of product and tremendous advantages in drying cycle times and efficiencies.

Technology

“Patented” Technology Continuous Rotary Torrefaction Reactor design

Cooling

Torrefied BioCoal Pellet material cooling system

Environmental

Environmental Thermal recuperative off process VOC gas purification system

TORREFACTION PROCESS

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Torrefaction
after-before Pelleting

Torrefaction process advangates after and before Pelleting

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Torrefied Pellets

DEFINITION AND PROPERTIES

Torrefied pellets are created through a process called torrefaction. The biomass is roasted, ground and afterwards pelletized. One of the main reasons for torrefaction is the increase of the energy content. Further advantages of torrefied pellets are:

• Improved combustion properties (energy content, heating value)
• Increased grind-ability (requires less energy during processing)
• Increased resistance to water absorption (outdoor storage is possible)
• Reduced biological activity (avoid decomposition of biomass during storage)
• Increased energy density (reduces transport costs)

Torrefied Pellets

RAW MATERIALS

The common raw material for torrefied pellets is woody biomass, but every raw material which can be pelletized can also be torrefied before or after pelletizing.

It is also possible to use low quality feedstocks, like bark. However the use of alternative raw materials, for example hay or straw, can cause operational difficulties.

Straw has, for example, a low ash melting point. Pelletizing has no positive effect on this combustion property. Therefore, if low-quality raw materials are pelletized, combustion properties are not necessarily improved.

Torrefied Pellets

STANDARDS

There is a European standard (DIN EN ISO 17225-8:2016: Solid biofuels – Fuel specifications and classes – Part 8: Graded thermally treated and densified biomass fuels) which defines the application and specification of torrefied pellets.
• Increased energy density (reduces transport costs)
Hence the benefits of torrefaction may outweigh the additional costs for the torrefaction process in many cases.

Torrefied Pellets

PRODUCTION PROCESS

Torrefaction can be applied to raw materials, but also to finished pellets

It is a thermochemical process, typically occurring at 200-350 °C in the absence of oxygen, at atmospheric pressure with low particle heating rates and a reaction time of one hour. Because of the high temperature, during the torrefaction process, the components of the biomass decompose. Low-energy components of the biomass are transferred to the gas phase. First the water is expelled, then hemicellulose decomposes, and partly also lignin.

The process is creating torrefied biomass or char, also referred to as 'biocoal'.

Torrefied Pellets

APPLICATION

At present torrefied pellets are produced mainly for large scale co-firing in coal power plants, they can be used in every plant which normally burns pellets or coal. Because of the roasting, the grindability of the biomass is increased and the grounded pellets can be co-fired with coal. Therefore and because of the reduced costs for transportation, torrefied pellets can become a mass product for industrial application.

WOOD BIOMASS

Tower Pellet Plant

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RICE STRAW

Pellet Plant

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ALFALFA

Pellet Plant

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पराली

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अधिक जानकारी

अल्फाल्फा

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अधिक जानकारी

TORREFACTION

Pellet Plant

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MSWC - MSOF - COMPOST - MANURE - COMPOUND

Pellet Plant

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WOOD - BIOMASS

Pellet Machinery

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Product Brochure & Presentation - Company Profile 

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NTPC TENDERS

Biomass Pellets

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