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mec Foster Wheeler’s Fired Heat-
ers division in Milan supported the Process Study: thermal and
company LLC KINEF to address fluid-dynamic re-rating of
the design and the operating is-
sues arisen in the dewaxing unit dewaxing heaters ∏1/∏2/∏3
A fired heaters ∏1/∏2/∏3 located at The Kirishinefteorgsyntez refinery reported serious
the Kirishinefteorgsyntez (Kirishi) refinery in Kiri- problems during the initial phase of operation of
shi, Leningradsky region, Russia. three new dewaxing fired heaters. The equipment
Following on from this work, a few years ago designed and supplied by others were found un-
LLC KINEF awarded a contract to Amec Fos- able to reach the design capacity, operating with
ter Wheeler (now Wood) for the engineering and very unsteady regime, tubes were visibly bowed
material supply of nine fired heaters for the new and, very unexpectedly after such a short period
High-Octane Gasoline Compounds Production of operation, hot spots were visible on the external
Complex to be built at the same refinery (figure surface.
1).
Kirishinefteorgsintez is the largest oil refinery Following on from this work, a few years
in Russia, producing petroleum products with ago LLC KINEF awarded a contract to
high-quality performance and environmental Amec Foster Wheeler (now Wood) for the
characteristics, including motor fuels, aromatics,
liquid paraffin, roofing and insulation materials engineering and material supply of nine
etc. Diesel fuel, jet fuel, roofing materials and fired heaters for the new High-Octane
bitumens produced by the refinery meet interna- Gasoline Compounds Production Complex
tional quality standards. to be built at the same refinery
The Kirishi refinery is owned by OJSC Surgutneft-
egas, one of the Russian oil majors involved in
oil and gas production and exploration, gas pro- Kirishi Refinery decided to invite Amec Foster
cessing, power generation, output and marketing Wheeler (now Wood) Fired Heaters specialists for a
of petroleum products, petrochemicals and gas site survey which was propaedeutic to conducting
products. a process study to advise possible solutions for the

Fig. 1 - Shipment of the
fired heaters to Kirishi

Fig. 2 - Existing heater radi-
ant tubes a short time after
start-up: the tubes are not
laying on the supports as a
result of bowing during op-
eration

Impiantistica Italiana - Marzo - Aprile 2018 57