Selection of client projects
Baas Energie ENS, Netherlands
Baas Pot-en Tuinplantenkwekerij grows potted flowers under glass for the European market on more than 50 ha at its site in Ens/Northeast Polder.
An increasing demand for heat for year-round production as well as recently an incipient demand for lighting required the expansion of their energy supply. In addition to various gas boilers, a bioenergy line with a conventional grate firing system for wood chips already existed.
The decision for the second energy line was made in October 2016 in favor of our Kombi Power System® with a 4.5 MW updraft gasifier. This generates up to 500 kWel of power and 3,800 kW of thermal output in cogeneration with an ORC system in heat-controlled mode.
The reasons for the decision were the low de-swathing costs, the high overall efficiency >95% and, above all, the extremely low emission values and this without additional filter technology.
OUR SERVICE
- System planning and implementation planning
- Turnkey one-stop technology, including manufacture, transport, installation and launch
Key data
Client: Baas Energie BV
Overall planning: ReGaWatt GmbH, Abensberg
Total investment: approx. 5 Mio. €
Construction period: September 2016 to December 2017
Exeo Kyowa Corporation Furudono, Japan
For more than 15 years, our cooperation partner Polytechnik has also had a partnership with the Japanese plant engineering company Kyowa Exeo Corporation from Tokyo.
After several biomass combustion and boiler plants, the decision has now been made to invest in the first wood gas power plant, and this, in the province of Fukushima. This is a clear sign for the energy transformation!
This decision was preceded by several tests on our test gasifier using Japanese cedar as fuel.
In a first stage of construction, a gasifier system for driving a gas engine with 990 kWel is now being set up at the Furudono site (Ishikawa municipality). Following successful demonstration and test operation, a second stage of construction with a further 990 kWel is planned for 2022.
Due to the fact that the Kombi Power System can process biomasses with high water contents without pre-drying (in Japan biomass fuel reaches up to 60% moisture) Exeo sees great opportunities for further marketing of the updraft gasifier technology in Japan.
Key data
Client: Kyowa Exeo Corporation
Overall planning: ReGaWatt GmbH und Polytechnik Luft- u. Feuerungstechnik GmbH
Total investment: approx. 7.3 Mio. €
Construction period: Period 1: September 2021 to April 2022
Test gasifier Senden
Fuel tests as part of the FNR funding project „Renewable raw materials: „Development of technologies and systems for bioenergy production and use with the aim of further reducing greenhouse gas emissions“.
Our operational experience to date has been limited to the use of untreated wood chips from forest residues and landscape management. However, the market often requires flexibility regarding fuels with much more favorable prices.
These are for example:
- Bark from sawmills
- Waste wood
- Miscanthus
- Compost overflow (woody screen residues from composting plants)
For this purpose, we have set up a test gasifier for the 0.1 MW power class at our partners Blue Energy site in Senden, which enables us, among other things, to carry out customer-specific tests. In addition to the suitability of the fuels, the gas composition as well as the quantity and composition of the by-products (wood oil) and residues (ash) are recorded.
Key data
Overall planning: ReGaWatt GmbH
Construction period: March 2020 to March 2023
Romande Energie Charmey, Switzerland
Romande Service SA, as a subsidiary of the major energy supplier of the canton Vaud, invests in and operates a large number of renewable energy projects in the canton and beyond.
In 2016, for example, a biomass heating plant in need of renovation, including a district heating network, was undertaken in the beautiful mountain resort of Charmey (canton of Fribourg) and is currently being expanded.
The existing biomass boilers are being replaced by the Kombi Power System. This will supply the thermal spa, a swimming pool, hotels, apartment buildings and other consumers as far as the town center.
The heart of the system is an updraft gasifier with a fuel output of 4.5 MW for natural wood chips from forests and landscapes. In combination with a gas engine of 770 kWel and an ORC plant for post-current generation of 120 kWel, this plant constellation achieves an unprecedentedly high degree of electrical utilization.
The special integration of the thermal plant „Les bains de la Gruyere“ with a three-pipe system enables low-temperature heat utilization by means of flue gas condensation.
All in all, not only new milestones are set both in terms of electricity efficiency and overall efficiency, but also very low emission values are guaranteed by post-combustion of the engine exhaust gases and the DeNOx plant.
Key data
Client: Romande Energie Service SA
Overall planning: ReGaWatt GmbH, Abensberg
Total investment: approx. 6 Mio. €
Construction period: May 2018 to December 2019
Romande Energie Puidoux, Switzerland
In 2017, after just one year of construction, both a new biomass cogeneration plant and a district heating network were built in Puidoux next to the sports center to supply the center as well as other municipal, commercial and private clients.
The heart of the plant is an updraft gasifier with a capacity of 4.5 MW, fuel capacity for natural wood chips from forest and landscape management. In combination with a gas engine of 770 kWel and an ORC plant for post-combustion conversion of 120 kWel, this plant constellation achieves an unprecedentedly high degree of electrical utilization. The heat output can be controlled from 1.5 MW up to 2.7 MW. This is possible due to a 50% power reserve at the gasifier.
The afterburning of the engine exhaust gases as well as the gas condensates in the steadily hot combustion chamber is the guarantor for permanently low emission values and this without additional exhaust gas filters or catalysts.
OUR SERVICE
- System planning and implementation planning
- Turnkey technology from a single source, including manufacture, transport, installation and launch
Key data
Client: Romande Energie Service SA
Overall planning: ReGaWatt GmbH, Abensberg
Total investment: approx. 6 Mio. €
Construction period: January 2017 to December 2017
Erweiterung Naturenergie Hersbruck
In 2004, Naturenergie Hersbruck was founded with the main shareholder ForstServiceGesellschaft Nürnberger Land to supply heat to the new Frankenalb Therme.
In the first stage of expansion, a biomass heating plant with grate firing was installed. The connection of the new tax office building and several apartment blocks enabled further expansion to a biomass heating plant. In the annex of the heating plant from 2012, a biomass updraft gasifier with combustion chamber, as well as a compressor air heater and an externally heated gas turbine for power generation were installed for the first time.
With this innovative energy system, the biomass-Achilles-heel particulate matter is a thing of the past: According to TÜV measurements, the new plant imitates 1 – 2mg of particulate matter per Nm³ of flue gas, which corresponds to less than 5% of the strict legal limit – and this without the need for costly filter systems.
Due to various problems with the turbine process, it had to be shut down in 2016. However, the gasifier itself will continue to be operated together with the special combustion chamber and will henceforth be used to supply district heating.
OUR SERVICE
- System planning and implementation planning
- Turnkey technology from a single source, including manufacture, transport, installation and launch
Key data
Client: Naturenergie Hersbruck GmbH & Co. KG
Plant engineering: Gammel Engineering GmbH, Abensberg
Total investment: approx. 5 Mio. €
Construction period: August 2013 to July 2014
