reconstruction of k4 boiler for biomass combustion

Reconstruction of K4 Boiler for Biomass Combustion

Martinská teplárenská, a.s.:The company Martinská teplárenská (MT, a.s.) is a heat source which produces heat together with electric energy, and supplies it into the central heating supply system.

Installed performance of main heat equipment:Boilers Performance (MWth)

K4 (fuel 100% wood chips or 100% natural gas) 60.0

K5 (fuel 100% brown coal or 100% natural gas) 60.0

K6 (fuel brown coal, stabilization with natural gas to 30%) 119.0

K7 (fuel brown coal, stabilization with natural gas to 30%) 119.0

In total 358.0

Annual electric power production: approx. 60 000 MWh

Annual heat supply to the distribution system: 1 116 797 GJ


Reason: Reduction of emissions, SO2 primarily - harmonization with legislation

- year 2003 design intent 2004 feasibility study 2005 project for building permit 2005 application for financing by the

Structural Funds of the Ministry of Environment of the Slovak Republic

- rejected two times 2008 proposed financing from the sale of

CO2 saving and privileged price of electric power produced from renewable

energy sources 2010 completion and delivery of the

construction into use


Reconstruction of K4 Boiler for Biomass

Combustion

Division of the Project:

A boiler reconstruction

B biomass fuel management

VO ensured by means of the journal of European Union

ZOD for reconstruction of the boiler II.Q./2009 –

Metso Power OY

ZOD for biomass fuel management IV.Q./2009 –

Váhostav-SK, a.s.


Combustion

K4 before reconstruction:

75 t/hr., 60 MW, 450 °C, 5.7 MPa

high-pressure

steam boiler fuel: brown coal,

powder combustion 100% performance also

with natural gas


Combustion

Heating plant thermal diagram.

K4 after reconstruction

parameters unchanged, the only change

concerns the fuel, brown coal is to be

replaced by wood chips.

the boiler is reconstructed for fluid

combustion in bubbling fluid layer

Stoker HYBEX


Operation of the boiler K4:

throughout the summer season transitional period up to maximum performance in the winter season (January, February) with a big

coal boiler

expected consumption 60-70 th. tons of wood chips

= compensation for 1/3 of coal basis for delivery – long-term contract with the state

enterprise Lesy SR, š.p.



Combustion

BFB CFB



Combustion

Emissions:

before after(mg/m3) (mg/m3)

TZL 40 30 *

SO2 1700 200

NOx 600 400

CO 250 250

TOC 50

* /polluting solid substances/

** /total organic carbon/

• The Project does not solve TZL, the adjustment shall be proposed in line with the actual state

• CO2 from biomass is not included, it is neutral



Combustion

Disassembly of combustion chamberDisassembly of combustion chamber


Combustion

Disassembly of steam superheaterDisassembly of steam superheater


Combustion

Disassembly of drying shaftsDisassembly of drying shafts


Combustion

DisassemblyDisassembly


Combustion

Foundations for biomass containerFoundations for biomass container

Area ready for storing place – before the Area ready for storing place – before the action commencementaction commencement



Combustion

Area for storing place – before completionArea for storing place – before completion


Combustion

Area for access roadArea for access road


Combustion

Works on the new entrance for bringing wood chips at the Works on the new entrance for bringing wood chips at the beginningbeginning


Combustion

Works on the new entrance for bringing wood chips before Works on the new entrance for bringing wood chips before completioncompletion


Combustion

Aerial view on the construction site before completionAerial view on the construction site before completion

Completion of the reconstruction by April 30, 2010Completion of the reconstruction by April 30, 2010

Elaborated by: Elaborated by: Ing. Miroslav Kadlec Ing. Miroslav Kadlec Trade, Development and Strategy Manager Trade, Development and Strategy Manager

Martinská teplárenská, a.s., www.mtas.skMartinská teplárenská, a.s., www.mtas.sk

e-mail: [email protected], e-mail: [email protected],

Tel. No. +421 905567723Tel. No. +421 905567723

In Martin November 18, 2010In Martin November 18, 2010

Thank you for your Thank you for your attention.attention.


reconstruction of k4 boiler for biomass combustion

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