| 1908 |
Wilhelm Wiegand obtained the patent for a multi-effect circulation evaporator |
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| 1920 |
Foundation of the firm of machine engineers Wilhelm Wiegand GmbH in Merseburg |
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| 1930 |
Opening of the Jet Pump Department |
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| 1937 |
First 5-effect evaporation plant for potassium bicarbonate |
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| 1948 |
Reestablishment of Wiegand Apparatebau GmbH in Karlsruhe |
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| 1951 |
Sale of the first porcelain steam jet vacuum pump |
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| 1953 |
Introduction onto the market of the falling film evaporator |
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| 1957 |
Building of our own test center in Karlsruhe |
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First evaporation plant with mechanical vapor recompressor |
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| 1961 |
First jet scrubbing plant for the suction and cleaning of waste gas |
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| 1967 |
First spiral tube evaporator for high-viscous products |
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| 1970 |
Move to the new company premises in Ettlingen |
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| 1971 |
Delivery of the 1,000th falling film evaporation plant |
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| 1973 |
First 6-effect evaporation plant |
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| 1975 |
Delivery of the 10,000th Wiegand water jet vacuum pump |
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Construction of the first product steam driven jet pump |
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| 1977 |
20th patent registration since 1948 in the evaporation sector in 17 countries |
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| 1979 |
30th patent registration since 1948 in the jet pump sector in 37 countries |
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| 1984 |
Entry into the GEA group |
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| 1986 |
Start of our own evaporator manufacture in Beckum |
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| 1987 |
Construction of an evaporation plant for thin juice with an evaporation rate of 475 tons/hr |
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| 1988 |
Testing of the 30,000th jet pump in our R+D centre |
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| 1990 |
Foundation of GEA Wiegand Arnstadt GmbH in Thuringia/Germany |
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| 1991 |
Delivery of the 3,000th evaporation plant |
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Construction of the first fluidized bed evaporation plant |
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Construction of a rectification and recovery plant for 60,000 l/d alcohol |
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| 1992 |
Delivery of 2 evaporators with a total heating surface of more than 11,000 m² |
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| 1993 |
Commissioning of the first fluidized bed drying plant |
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| 1994 |
Certification according to DIN EN ISO 9001 |
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Manufacture authorized by UDT, the Polish Technical Inspection Board |
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| 1996 |
Modernization of the Research and Development Center |
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| 1997 |
First manufacture of evaporators in China |
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Authorization to build pressure vessels in accordance with US regulations (ASME U-Stamp) |
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| 1998 |
Commissioning of the first key-turn alcohol line for 60,000 l/d in East Europe |
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| 1999 |
Transfer of the jet pump activities to the GEA Jet Pumps GmbH |
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| 2001 |
Delivery of vacuum plants for the largest polyester factory in the world |
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| 2002 |
Opening of a Membrane Filtration Department |
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| 2004 |
Commissioning of 3 Bioethanol Production Plants with molecular sieve technology |
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| 2007 |
Turn-key Bioethanol plant for 100,000 tonnes/year |
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Delivery of the vacuum system for the largest refinery worldwide |
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| 2008 |
100 years of Wiegand technology |
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| 2009 |
Reintegration of GEA Jet Pumps GmbH |
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| 2010 |
Start of production in Kitzingen |