Page 13 - Vol.36-No.6 issue

IRRIGATION

ETW ENERGIETECHNIK er can optionally apply for a further ten- The bottom line is that the CO2 savings
year EEG payment by means of a tender.
achieved by the regenerative storage
EXPANDS BIOGAS PLANT His main advantage: thanks to the Flex power plant in electricity production can
CHP, his plant is now operated in such a
be estimated at 2,683 tonnes per year
TO REGENERATIVE way that electricity and heat can always and in heat production, including pro-
be fed in at the most productive time of
cess heat, at around 1,300 tonnes.
STORAGE POWER PLANT day. For this purpose, the biogas plant is Circle 14 on enquiry card
controlled by a direct marketer in such
a way that the storage tanks are always
In Wehrbleck in Lower Saxony, the optimally filled when prices are at their THE HYBRID 2 IN 1
company ETW Energietechnik from highest and that the largest possible PRODUCTION LINE FOR
Moers expanded an agricultural biogas quantities of electricity and heat are
plant into a regenerative storage pow- available for this purpose.
er plant in 2019. The CHP experts were FLAT DRIPPER/TAPES
supported by the planning company En-
ergethik from Osnabrück. In addition to DRTS is proud to introduce our latest
the new Flex CHP with the TCG 2020 V20 product line the 2 in 1 Hybrid produc-
biogas engine from MWM with 2 mega- tion line for flat dripper/tapes. Our his-
watts, electric and 2.3 megawatts, ther- tory and performance in the last 30 years
mally, ETW also installed a combined positioned us as the leading supplier of
gas storage tank with 8,490 and a heat drip irrigation production lines world-
storage tank with 1,000 cubic meters. wide. DRTS has supplied well over 500
The total investment amounts to 1.6 mil- drip irrigation production lines in over
lion euros. Safety alarm stops gas 30 countries.

supply preventively
The plant is powered by desulphur-
ized biogas. For this purpose, the sulfur
content is conditioned down from around
5,000 parts per million (ppm) to around
2 ppm. A safety alarm with an integrated
stop of the gas supply to the storage pro- Produce Two Unique
tects the CHP at a sulfur content above 2 Product on One Line
Heat ensures rapid start-up ppm. This is particularly necessary be-
cause the sulfur content can rise faster This unique production line gives
Since 2001, farmer Andreas Rohlfs has manufacturers not only production in-
been operating a biogas plant with an in flex operation. After the preventive dependence but production versatility.
area of around 235 hectares. Based on the shutdown, the operation of the engine is The DRTS Hybrid production line 1000
input materials maize, dung, and liquid maintained with the gas from the storage for tape/flat, allows our client to produce
manure, the operator generated around tank. both flat driplines and tapes on the same
5.4 million kilowatt-hours of electrical Space available for SCR production line.
energy and 4.1 million kilowatt-hours of
thermal energy before the expansion. catalytic converter Normally, drip irrigation pipe manu-
Since its expansion into a storage power facturers would either need to purchase
plant, the plant now produces 5.7 million „In order to be prepared for future two separate production lines fr these
kilowatt-hours of electrical energy and NOx limits, ETW has already reserved two types of pipe or stop production en-
almost 5.8 million kilowatt-hours of heat the necessary space on the CHP con- tirely and switch over to a different type
per year. The electricity is fed into the tainer for an SCR catalytic converter. The of dripper in the feeder bowl. Until now.
grid; the waste heat is fed into a district plans also take into account a reserve for The Hybrid production line is unique in
heating network for heating private and exhaust backpressure,“ explains Alex- that it allows for two different types of
municipal buildings and is used to dry ander Szabo, the responsible sales man- drippers, giving the manufacturer the
wood chips. Part of the heat is diverted ager at ETW Energietechnik. ability to introduce a wider range of
to keep the engine warm when it is not Flexible substrate input products to the market with a single pro-
running. This allows the direct marketer duction line.
to quickly restart the engine if necessary The variation of the substrate quanti- The Flat dripper pipes, which use a
and immediately access the full output of ties also contributes to the flexibility of standard sized NPC symmetrical drip-
the CHP. the CHP operation. This makes it possi- per (see DRTS Centra-Flat) are best for
ble to reduce biogas production at low pipes with a wall thickness of 0.3-0.9mm.
Flex operation ensures electricity prices so that the CHP unit These drippers and pipes are used for
profitability can be shut down for up to two days if multi-season applications.
necessary without overloading the gas The Tape Lines, which use a small,
In addition to the increase in output, storage tank. The heat storage tank can non-symmetrical NPC dripper (see
the plant now operates flexibly. In return, store 40,600-kilowatt hours of thermal DRTS Micro/Nano Dripper) are best
Rohlfs will earn an additional flexibility energy and thus supply the heating net- for pipes with a wall thickness of 0.15-
surcharge of 40 euros per kilowatt over work for around 50 hours without the 0.3mm. These Tapes are used for a sin-
the next five years. Afterward, the farm- CHP unit having to be put into operation. gle/double season application.
Circle 15 on enquiry card
Vol. 36 No. 6 11