Manufacturing companies, such as producers of tissue paper, ceramics, furniture, aluminium, glass, textiles, gypsum, food etc. need either
– High quality process heat, or
– Power and low temperature heat.
Meva Energy can supply a cost-efficient renewable solution for both, utilizing local biomass residues.
Gas for industrial process heat
Replace fossil liquid petroleum gas (LPG) or natural gas by renewable syngas to generate industrial process heat.
Due to stability of gas composition and very small variations of gas flow and pressure it is possible to replace existing fossil gases also in sensitive industrial processes, like drying of tissue paper.
Combustion of Meva Energy syngas is odor-free and exhaust gases have very low levels of particle content.
Tissue paper production: significant carbon foot print with conventional fossil gas combustion.
Example: Tissue paper production
Enabling fossil-free tissue production with renewable syngas
The final step of producing tissue paper involves drying the tissue using a so-called yankee cylinder equipped with drying hoods. Fossil gas such as LPG or natural gas is combusted in order to produce hot flue gases which are blown through the drying hood and onto the tissue paper surface in order for it to dry.
The quality demands on tissue paper are high- visual imperfections or odors caused by particles originating from the flue gases are unacceptable.
Meva Energy has verified the use of Meva syngas in tissue drying application together with leading burner manufacturers and research institutes and the results is clear:
- Full flame stability with 100% syngas (no LPG enriching)
- Very low levels of particles in the exhaust gases
- No traces of odors or visual imperfections on the paper
- Functionality with several standard burner types such as: corner-, duct- and swirl burners
- Possible to co-fire LPG/NG and renewable syngas in same burner
- No need to redesign or expand existing burner chambers
Meva Energy has been following the tissue industry for last years, discussing with tissue producers, machine manufacturers, consultants and industry experts and a conclusion is clear: the high demands of process heat (high temperature, stable quality, no particles, no odor etc. in combination with cost efficiency) in tissue industry has resulted in that gas will be the solution for a foreseen future. More actors are going for biomass for steam generation (heating inside yankee, gas is still used for hoods) and co-generation (gas generation) units are getting more popular. The few electrical heated drying hoods are to be faced out due to in-efficiency. In fact, many new developments (such as recycling heat from drying hoods to yankee cylinders, increased use of Through-Air-Dryers, co-generation etc.) means an increase of gas usage. Therefore, reliable, cost-efficient renewable gas solutions is urgently needed within the tissue industry.
Combined heat and power
CHP application: renewable local power and heat production
High efficiency due to lean burn combustion
Maximized fuel efficiency in fixed installations of combustion engines is generally achieved by applying the concept of lean burn. Due to this principle, the engine can use a higher compression ratio and thus a higher level of efficiency and more efficient fuel use. However, lean burn engines demand stable fuel supply conditions and they cannot tolerate a quickly changed heating value or flow rate.
To the knowledge of Meva Energy, Meva’s technology is the only gasification system in the world being able to use lean burn CHP engines. The reason is simple; the incomparably continuos and stable character of the process ensures that the gas supply exhibits extremely small level of variation.
CHP application in a wide range of installations
The technology is suitable for several different applications characterized by fuel type and heat application. Possible applications for the current set-up of 1.2 MWe and 2.4 MWth include:
- Industry: chemical plants, saw mills, refineries, laundries, food industry, plastic molding industry, farming and green houses
- Commercial: office buildings, airports, shopping malls
- Residential: DHC systems, multi-family housing, planned communities, hotels
- Institutions: schools, nursing homes, prisons, hospitals
Beside having maximum utilization of the produced heat, the key to reach maximum profitability conditions is to use a low cost fuel. As the system can use saw dust as fuel, one particularly interesting segment is saw mills and wood-producing industry where saw dust is a by-product.
Existing CHP-Plant in Hortlax, Piteå Sweden
Example: Board furniture production
Processing boards, such as MDF, results in fine wood dust contaminated with urea based glue. Only a small share of this can be recycled. CO2 emissions comparable with 2,1 million EU-citizens (similar to Slovenia) could be saved by recovering wood residues from the board industry.
The fine character and solid nitrogen in the glue makes it troublesome to use in conventional boilers for energy recovery.
Meva’s entrained flow gasifier is optimal for this fine character and the wet gas cleaning capture the solid nitrogen – in fact, giving an extra carbon capture effect.
- Valorization of underutilized biomass waste
- Low cost energy production
- CO2 negative solution
A recent calculation for a MDF-based furniture producer of a Meva Energy 2,4MWe and 4,8MWth plant showed 50% reduction in power costs and annually savings of 13 200 tons of fossil CO2 emissions.