Steam and hot water boiler systems for industrial and municipal power generation Dr.-Ing. Wolfgang Sobbe VKK Standardkessel Köthen GmbH

Steam and hot water boiler systems for industrial and municipal power generation Dr.-Ing. Wolfgang Sobbe VKK Standardkessel Köthen GmbH German-Vietnamese Bio Energy Day Ho Chi Minh City, 16. September 2013

particularly with biomass firing 1 Company introduction, delivery program 2 Shell boiler with oil/gas firing 3 Heat recovery boilers 4 Boiler systems with biomass firing - Firing and boiler design - System examples 5 Distribution partner in Vietnam: EUROASIATIC JAYA P.T.

VKK Standardkessel Köthen GmbH Köthen: Vorwärmer- und Kesselbau Köthen GmbH (VKK) 1865 Franz Kurth founded a copper- and boiler forge Production of steam boilers and large vessels 1954 VEB Vorwärmer- and Kesselbau Köthen Market leader for coal fired steam generators 1990 Take over of Vorwärmer- and Kesselbau Köthen GmbH by Standardkessel-Gesellschaft Lentjes - Fasel GmbH Duisburg: STANDARDKESSEL-Gesellschaft Lentjes-Fasel GmbH (SKG) 1925 August Fasel registered his company for central heating systems and steam boiler repairs 1950 Production of horizontal flame tube boilers for coal firing Patent for three-pass flame tube / fire tube Boilers Production of radiant steam boilers for high capacities as Portaboiler Production of CONDORBOILER as fully automatic three-pass boiler for fuel oil firing. 2001 VKK STANDARDKESSEL Köthen GmbH Fusion of Standardkessel-Gesellschaft Lentjes - Fasel GmbH with Vorwärmer- and Kesselbau Köthen GmbH

Steam and hot water boiler systems Shell boilers with oil/gas-firing: Boilers for solid fuels: Heat recovery boilers: Three-pass flame tube / fire tube boiler (CONDORBOILER) - Steam output until 55 t/h - Hot water generation until 36 MW Fire tube and water tube design - Biomass combustion - Pulverized lignite combustion Fire tube and water tube design - Heat and power cogeneration - Process heat - Thermal oxidiser

Single-flame tube / three-pass boiler for saturated steam generation

Two-flame tube / three-pass boiler for superheated steam generation

Manufacture in Köthen Made in Germany In-house production of boiler heating surfaces and components as well as tailor made boiler systems in Köthen, Saxony-Anhalt, Germany.

Advantageous boiler designs (Euro-Norm EN 12953) Tailor made design of heating surfaces. Pressure vessel with dished ends. Water-cooled rear flue gas reversing chamber. Cooling grooves at the inlet of flue tubes.

Heat recovery boiler behind gas engine Gas engine system: 4 x 750 kw el, / Exhaust gas: 4 x 1.26 kg/s, 500 C Boiler system: 2 x Heat recovery boilers with 2 separate flue gas passes and with additional firing as separate three-pass system, each boiler 5 t/h, 13 bar saturated t steam

Heat recovery boiler behind gas engine Heat recovery boiler behind gas turbine 55MW 5,5 el Gas turbine: Solar Taurus 60 / Exhaust gas: 20.2 kg/s, 512 C / Natural Gas H (Fuel oil EL) Boiler: Superheated steam: 200 C, 16 bar, 12 t/h (exhaust gas) up to 20 t/h (exhaust gas and additional firing)

Heat recovery boiler behind gas turbine 15 MW el Gas turbines: 2 x Solar Titan 130 2 x Heat recovery boiler with additional firing Heating (100 %, air 11 C) GT-exhaust gas GT-exhaust gas and add. firing Exhaust mass flow kg/s 49.86 50.35 Exhaust gas temp. (comb. chamber) C 500 860 Exhaust gas output temp. C 141 115 Steam output t/h 29.36 65 Steam pressure (14 bar zul ) bar 11 11 Steam temperature (unregulated) C 210 212 Feedwater temperature C 103 103 Pressure loss, gas side mbar 26.4 28.5 Heating input (25 C) MW 25.85 25.85 + 22.7 Thermal output (25 C) MW 19.63 43.57

Boiler systems with biomass firing until appr. 10 MW Usage Self-supply of energy from biomass (e.g. wood, rice husks ) for the generation of hot water, steam or electricity Steam boiler with stoker firing for biomass with oil additional firing system

Biomass combustion and boiler designs Underfloor firing for steam boiler until 10 t/h Underfloor firing for chips, for wood pieces, blowing-in equipment for chips saw dust and wood pieces in flame tube and wood dust, oil burner as additional firing and pre-combustion chamber

Biomass combustion and boiler designs Blow-in-cyclon-combustion for saw dust, abrasive dust and grounded wood chips with oilfired pilot burner for hot water generation 6 MW Parquet factory Moving-grate stoker firing for wood pieces, chips, saw dust and abrasive dust with oil-/gas-additional additional firing for steam generation 12 t/h, 230 C, 16 bar Plywood factory

System example 1 Steam boiler for Biomass-cogeneration plant STEAG-Werl STANDARD-Three-pass Th fire tube boiler with cooled flue gas reversing chamber for better efficiency, with dished ends for a high elasticity and with large water content and large steam space for a high storage capacity. Moving-grate for the combustion of wood chips (old growth, scrap wood, cuttings) with automatic ash removal. Automatic heating surface cleaning system with compressed air rods for 2. and 3. fire tube pass and big cleaning opening for 1. fire tube pass. Flue gas cleaning through cyclon and fabric filter on boiler outlet.

System example 1 Superheated steam boiler Steam output: 5 t/h Operating pressure: 32 bar Steam temperature: 380 C Flue gas temperature: 150 C Heat and power cogeneration Power generation: back-pressure turbine electrical power 480 kw Heat generation: district heating condenser thermal output 3.3 MW

System example 2 Biomass-cogeneration plant VATTENFALL-Sellessen Scope of delivery: Planning, delivery, erection, commissioning and trail operation Delivery period: October 2004 April 2006 Construction start: April 2005 (Ground: 6000 m 2 ) Heat generation: January 2006 Steam generation, max. 15 t/h Operating pressure, max. 44.5 bar Superheated steam temperature (regulated: 80..100% load) 430 C (+ 10 K) Feedwater temperature (Eco inlet) 105 C Boiler efficiency (at 25 C) 89 % Fuel demand (at turbine-nominal load) 3.26 3.70 t/h

System example 2 Fuel Wood chips (crown wood, branch wood, root wood from open-cast mining i or forest holding) Heat value: H u = 8.28 12.24 MJ/kg Water content: W r = 55 % 25 % Ash content: A r = 2.0 7.0 % Fuelstorage with capacity of 5 days Firing Moving-grate, cooled combustion chamber, staged air supply, flue-gas recirculation

System example 2 The design of the combustion chamber was optimised i by CFD simulation of the combustion process. Thus, high burnout rates and low emissions are achieved. Carbon monoxide and temperature distribution in the combustion chamber

System example 2 Biomass boiler (side view)

Distribution partner in Vietnam: EUROASITIC JAYA P.T. Exclusive Sales & Service in Vietnam EUROASIATIC - YOUR PARTNER FOR INDUSTRIAL SOLUTIONS. EA is a German owned and managed company, established in 1969. EA headquarters are based in Indonesia, in the capital city of Jakarta with total staff of 500 in South East Asia. The domestic branch offices are located at the cities of Bandung, Palembang, Medan, Surabaya, Semarang and Solo in Indonesia to provide the solutions at the door steps of customers. EA overseas locations are based in Vietnam,Singapore, Malaysia, Thailand, India, and Philippines providing localised solutions to their customers. With a presence of more than 4 decades in South East Asian markets and with the high knowledge of the markets and their technologies, EUROASIATIC provides solutions under one roof with selected their partners from Germany and across the globe. EA provides their own experienced on-site service back-up at any time, within the countries of their activities.

Distribution partner in Vietnam: EUROASITIC JAYA P.T. Exclusive Sales & Service in Vietnam EUROASIATIC - YOUR PARTNER FOR INDUSTRIAL SOLUTIONS. EA s dedicated personnel provides its expertise in the following Technical Services - Design & Engineering, Project & Construction Management, After-Sales Services, Spare Parts support in addition to Operation & Maintenance Programs, customized and tailor-made energy solutions and plant systems without compromise. German made industrial steam boilers, hot water boilers and high pressure steam boilers by VKK STANDARDKESSEL. These boilers are supplied tailor made for the individual requirements of the customers. Head Office: Branch Office: Ho Chi Minh City Hanoi City 413/15 Nguyen Kiem Street. Phu Nhuan District 649 Kim Ma Street. Ba Dinh District S.R. of Vietnam S.R. of Vietnam Phone: +84838454288 Phone: +8447663564 Facsimile: +84838454278 Facsimile: +8447663565 E-mail: ea.hcmc@euroasiatic.com.vn E-Mail: ea-hanoi@ftmail.vnn.vn

Quality workmanship VKK STANDARDKESSEL has been granted all accreditations required for the manufacture of steam boilers and pressure equipment. On an international level, renowned inspection and accreditation agencies have certified that, we fulfill maximum quality requirements. TÜV Certificates: Quality Management System according to DIN EN ISO 9001 warrants the systematically and controlled Quality workmanship and Certificate Made in Germany

www.vkkstandardkessel.de de