Guide to renewable energy - Solid biomass - Agricultural biomass

Solid Biomass

Table of Contents

Wood Biomass

1 Is it for me?

2 Introduction

3 Types of domestic heating systems with wood

4 How much does it cost?

5 What are the benefits?

6 Step by step guide

7 Case studies

Agricultural Biomass
8 It is for me?

9 Introduction

10 How much does it cost?

11 What are the benefits?

12 Step by step guide

13 Case studies

14 Legal considerations and financial tools

15 References

Agricultural Biomass: Case studies

Haslev CHP Plant using straw, Denmark

Haslev CHP Plant was built with the purpose of using straw as fuel for producing electricity and heat. The plant is 100% straw fired and is burning approx. 27,000 tonnes of straw per year.

ftp://erg.ucd.ie/public/pdfiles/res/case_studies/bm_03.pdf

Co-generation plant in Grenaa, Denmark

This co-generation plant includes a circulating fluidised bed boiler plant, steam turbo generator and fuel handling systems. Annual fuel consumption is 69,000 tonnes of straw and 38,000 tonnes of coal.

http://www.lior-int.com/biomass/biomasscs4.htm

Biomass straw fired boiler plant in Przechlewo, Poland

The boiler plant in Przechlewo has been in operation since 2001 and is currently one of the largest biomass-fired energy facilities in Poland.

With the help of the Ekofundusz Foundation, the WFOOEiGW (Voivodeship Fund for Environmental Protection and Water Management) in Gdañsk and the AWRSP (Agricultural Property Agency of the State Treasury), the Urzd Gminy (Local Authority Office) in Przechlewo decided to construct a straw fired boiler to replace the coal-fired boiler plant, which was old, inefficient and emitted harmful substances.

The net cost of 1 ton of straw is EUR 32 and the boiler plant utilizes 2500 tons of straw per year.

http://www.managenergy.net/products/R422.htm

Straw fuelled heating plant in Nakskov, Denmark

In 1957 an oil fuelled heat plant was built in Nakskov city centre to supply the citizens with district heating.

The plant was initiated, built and owned by an association of citizens, but the construction was supported by the municipality, which immediately implemented it in the planning schemes. The heat capacity was 20 MW divided between 4 boilers.

Later in 1984, two straw fuelled boilers with a heat capacity of respectively 4 and 3 MW were built in the western part of the city burning pressed straw pellets. After approximately one year it was concluded, that the pressing of these pellets was too expensive, and thus, the boilers were replaced by one furnace for pure coal firing.

By now, the association had very poor economic results and they were forced to either close or sell the production capacity to the municipality. The latter was done.

The coal furnace was replaced by a straw furnace (NordFab) of 6 MW plus 2 new coal furnaces. In 1996, these two coal furnaces were then also removed, and replaced with another straw fuelled furnace (Vølund), this time with a capacity on 8 MW. In addition, a 20 MW boiler (Vølund) was installed burning gas oil.

http://www.managenergy.net/products/R415.htm

Såtenergi AB - 4 MW Straw heating plant, Sweden

An Air Force base, buys approximately 20 GWH of district heating energy. The fuel is supplied by an by 40 local farmers who owns 9% of Såteneri AB.

Total investment in 1993 was € 1.4 million. Annual profit rose from 75500 Euros in 1996 to 198900 Euros in 2001. The reduced use of oil has led to reduced sulphur dioxide and carbon dioxide emissions.

Since the fuel supply is local, the need for transportation is minimized. Ash from combustion is returned to the fields as fertilizer.

http://www.managenergy.net/download/nr80.pdf