Objetivo Installation of burners for variable low calorific gas to provide the data necessary to improve the design of lean gas firing installations in two aspects :- to give a greater flexibility of operation of the burner when firing a variable mixture of by-product gases (BFG/LDG) alone or in combination with extra fuel supplies (natural gas, propane, coal gas) and/or oxygenation of the fuel.- to investigate methods of combustion control which, together with the burners, are able to cope with a greater range of gas qualities with time variations.Several problems arose during the project;- the support of the blast furnace gas pipeline gave some constructional difficulties concerning the mechanical load on the existing distribution line. This has now been solved.- during the start-up of the boiler, the signals from the uv detecters were barely perceptible. The problem was solved by shortening the guidepipes after which they performed satisfactorily.- when burning pure coke oven-gas or pure natural gas, the part of the burner used for blast-furnace gas became too hot as a result of internal flue-gas recirculation. This was solved by feeding cooling air to this part of the burner.The project has fulfilled its objectives and expectations, except for the investment costs which were 26% higher than expected.Energy savings can be broken down into the following;- boiler no. 15, used in this project, has a 1% higher inherrent efficiency than the "standard" boiler. This means an energy saving of about 15,000 gj/yr.- use of waste flare gas for steam production in the period June and December 1986 saved on average 25,000 gj/month.1) The unusually large actual energy saving of 25,000 gj/month is because of problems at the nearby power station which is normally the largest user of blast-furnace gas. As a result the boiler was fired almost continuously from this gas.Estel Hoogovens will report to International Flame Research Foundation for the investigation of scale up and interaction of burners and for design criteria for instrumentation installations. It is also intended to execute the work in parallel with a research project called "Use of alternative fuels in oil and LPG fired furnaces" which has been started at the department of heat and furnace technology of the Royal Institute of Technology in Stockholm. The IFRF is currently conducting an investigation of specification for burners applicable between approximately 3 and 8 MJ/m3, so the burners will be suitable for those gas composition and the instrumental provisions should be designed for optimum firing within this range. IFRF will have to perform complementary investigation for scaling up of already tested burners which have capacity of 0.5 - 2 MW, for application at boiler 15 and for the investigation of interaction of, for instance, 3 burners in one combustion chamber, as well as for the determination of the required control system. The project will take place in two phases: the first for the construction (installation of boiler 15 in the power station) and the second for scale up, start up and measuring program.Boiler number 15 is one of six steam boilers in power station 1 which supply steam at 80 Bar to two turbo-generators, on to turbo-compresors and then to heat consumers. This boiler represents 25% of the power station capacity. The boiler was fired by coke oven-gas and/or natural gas via front burners. Fuel oil can also be used. This project consists of replacing these gas burners with burners also suitable for low-calorific gas. These burners will have a wide range of control for varying gas compositions. Programa(s) ENG-ENALT 1C - Programme (EEC) of financial support for projects to exploit alternative energy sources, 1979-1984 Tema(s) 1.2 - BUILDINGS Convocatoria de propuestas Data not available Régimen de financiación DEM - Demonstration contracts Coordinador HOOGOVENS GROEP BV Aportación de la UE Sin datos Dirección POSTBUS 10000 1970 Ijmuiden Países Bajos Ver en el mapa Coste total Sin datos
