History of BENSON Technology
Based on the concept developed by Mark Benson, Siemens continued to develop this type of boiler in the mid twenties while retaining the name BENSON Boiler.
It was recognized that a once-through evaporator could be operated at both subcritical and supercritical pressure.
1924
| Siemens obtains patent rights from Mark Benson and develops the BENSON boiler
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1926 to 1929
| Siemens manufactures three BENSON boilers (30 t/h to 125 t/h)
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1933
| Siemens discontinues it's own production;awarding licenses instead to several boiler manufacturers
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1933
| Siemens introduces variable-pressure operation
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1949
| The world's first once-through boiler with high steam conditions (175 bar/610ºC)
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1954
| The world's first boiler with supercritical pressure (300bar/605ºC)
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1963
| The world's first spiral-tubed water walls in membrane design
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1999
| First once-through HRSG with vertical tubing and natural circulation flow characteristic
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2000
| 1000 BENSON boilers sold with > 700.000 t/h in total
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2002
| First once-through boiler with vertically tubed water walls operating at subcritical pressure in low mass flux design (natural circulation flow characteristic)
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2003
| Order for first supercritical CFB boiler (Siemens low mass flux design)
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2007
| First order of a once-through boiler with vertically tubed water walls operating at supercritical pressure (Siemens low mass flux design)
First order of once-through anthracite boilers with vertically tubed water walls operating at supercritical pressure (Siemens low mass flux design)
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