BIO-ENERGY
designing or upgrading an AD plant there are numerous ways to maximise operational efficiency – improving both economic returns and environmental performance. External digester
“Cooling and
heating (using HRS DTI Series heat exchangers, for example) offers a number of advantages over heating systems which are located in the digester. External heating can be checked, cleaned or serviced at any time without the need to empty (or enter) the digester. Other benefits include the fact that external systems can be designed so that one heat exchanger array heats more than one digester, and the improved thermal performance reduces heating requirements and improves the overall energy efficiency of the AD plant. Operating life is often considerably greater compared to internal heating units, and routine maintenance is more straightforward. Cooling and recovering the heat from exhaust gases can increase the efficiency of combined heat and power (CHP) plants used to generate electricity from biogas. Using HRS G Series heat exchangers on the exhaust recovers energy which can be used elsewhere in the plant, including feedstock and digester heating,
recovering the heat
from exhaust gases can
increase the efficiency of CHP plants used to generate electricity from biogas”
pasteurisation and digestate concentration. The HRS BDS Series is an efficient solution to cool and dehumidify biogas for combustion. The system condenses up to 90% of the water contained in the gas, which is continuously separated before the clean biogas is ready for use as a fuel in the CHP engine, and an optional heat recovery step can reduce energy costs up to 20%. The HRS DPS (Digestate Pasteurisation System) is designed to effectively and
efficiently pasteurise digestate, feedstocks, sludge and similar materials,
allowing operators to maximise the efficiency of their overall process while meeting regulatory requirements and increasing potential markets for digestate as a biofertiliser. Traditional single tank pasteurisation units simply dump this heat afterwards, meaning they are incredibly wasteful and inefficient. In contrast, the DPS recaptures this heat and uses it again, making it up to 70% more efficient than traditional single tank ‘heat jacket’ type pasteurisation systems. After digestion and biogas
production, the digestate is often separated mechanically into solid and liquid phases. The HRS DCS (Digestate Concentration System) uses an evaporation process to concentrate the digestate, meaning that the volume is decreased, reducing the costs of storage, transport and application. Using a multi-stage evaporation process, the liquid digestate volume can be reduced by up to 80%. Unlike other technologies, the HRS DCS increases the content of crop nutrients whilst recapturing energy for use in the subsequent concentration phases, increasing energy efficiency and reusing the condensate elsewhere in the AD plant, and preventing additional discharge to the environment.
HRS Heat Exchangers T: 01923 232335
www.hrs-heatexchangers.com
The use of anaerobic digestion is rapidly increasing in the wastewater sector
MANAGING ENERGY EFFICIENTLY
HRS Heat Exchangers operates at the forefront of thermal technology, offering innovative and effective heat transfer products worldwide, focusing on .
Heating Cooling
Condensing
Evaporation Waste Volume Reduction Product Recovery
info@uk.hrs-he.com | +44 (0)1923 545 625
www.hrs-heatexchangers.com
HRS Heat Exchangers
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44
