Envigas Biocarbon

The steel industry is going green

Replacing the extensive use of coal with BioCarbon can enable fossil free steel production. We are proud to be the first large-scale producer of BioCarbon in the Nordics, helping the shift towards a more environmentally-friendly steel industry.

Sustainable BioCarbon

Envigas builds, owns and operates high-precision, large-scale pyrolysis plants which turn organic residuals into BioCarbon and energy. Envigas uses residuals from the forestry and wood industry as sawdust, shavings or wooden pellets that can be turned into high-value output.

Envigas is certified by the European Biochar Foundation

BioCarbon

With precision control of residence time and a pyrolysis temperature close to 600°C, the BioCarbon we produce is nearly free of all PAHs and carries a carbon content of > 90%. With low ash-content and a low level of humidity, this basic BioCarbon is well adapted for use in various metallurgic applications.

BioCoke

Envigas BioCoke is made from BioCarbon, post-processed by densification and mixed with various types of binders. With a higher unit and bulk density, mechanical strength and a somewhat lower reactivity - it is suited for a broader range of applications.

BioOil

BioOil, also called pyrolysis oil, is a liquid mixture of acids and hydrocarbons which can be used as chemicals for a wide range of high value applications.

Syngas

The non-condensable phase of the Syngas produced in the pyrolysis process has a considerable heating value and is ideal to power a boiler producing heating or electricity. Syngas can also be post-processed to become methane or hydrogen.

Learn more about BioCarbon

BioCarbon is a mixture of pure carbon and in-organics from raw material. Along with BioCoke, it can be used as a reduction agent, in skimming and injection for the metallurgic industry, or can be post-processed to bio-based carbon black or bio-graphite.

BioCarbon

Our production

Our process

Our 5 step process secures quality and high carbon content

Feedstock Qualification & Preparation

The choice of residuals as feedstock is of utmost importance for the remaining process steps. Residuals should originate from certified and traceable sources. For the efficacy of the process a low-level humidity is advantageous. We only use residuals from Nordic stemwood, pine or spruce.

Pre-treatment (alternative by choice)

Dependent upon the type of feedstock or biomass, pre-processing treatment can be required. The level of humidity, particle size and shape defines the need for pre-treatment to be optimised for the remaining steps of pyrolysis. As one alternative, wooden pellets could be used with a homogenous shape and particle size, humidity and traceability.

Pyrolysis

The biomass is pyrolysed in a heated and inert (oxygen-free) process of approximately 600°C. The quality of the BioCarbon output is controlled by factors such as temperature and residence time for biomass in process. Approximative yield of biomass to BioCarbon is 20-25%.

Selective Condensation

The process for pyrolysis of biomass emits pyrolysis gas. The approximate biomass-to-gas yield is 60-70%. A selective condensation can be made to output a mix of BioOil and pyrolysis gas. Several post-processing steps can be added to eventually produce e g BioMethane (CH4) or Green Hydrogen (H2). All gas can be condensed to BioOil possible to post-process to fuel-additive quality.

Post Treatment and Packaging

To reduce BioCarbon's high reactivity, there are various means to lower it and make it easier and safer to handle. Envigas has developed several solutions and special routines to secure safe handling and transportation of BioCarbon.