Thermal specificities:
Quiri, specialist in heat exchangers, introduces you a BKU TEMA type steam generator.
This exchanger was delivered to England in 2017 as part of the construction of a cogeneration plant.
The plant also supplies process steam to another plant via this steam generator.
The steam generator, which is a multitubular heat exchanger, of Quiri thermal design, ensures the production of saturated steam by condensing superheated steam. The superheated steam comes from the steam extraction of the turbine. The heating steam supply pressure (primary side) to the steam generator is controlled to maintain constant steam pressure (secondary side).
The feedwater for the shell side (secondary side) is supplied by the water supply system of the factory. The water supply is controlled to maintain a constant level of water on the shell side of the steam generator.
Some Technical Data:
| Shell side | Tube side | ||
| Nature of fluids | Water | Steam | |
| Flow | t/h | 50 | 56 |
| Inlet temperature | °C | 136 | 208 |
| Outlet temperature | °C | 189 | 198 |
| Operating pressure | Bar abs | 12 | 15 |
| Design pressure | Bar g | 15 | 23 |
| Design temperature | °C | 204 | 350 |
| Heat exchanged | MW | 31 | |
| Main dimensions | ||||
| Installed exchange surface | m² | 2350 | ||
| Type of bundle tubes | Smooth bent tubes | |||
| Shell diameter | mm | 2100 | ||
Geometric specificities:
Horizontal tubular heat exchanger, overall length 14 m, empty weight 55 tons.
Construction Specificities:
Code: EN 13445
Regulation: PED 2014/68 / EU
Risk category IV, reception module G
Joint efficiency : 0.85
Metallurgy:
| Material | Standard | |
| Shell | P265 GH | EN 10028-2 |
| Tubesheet | P355 QH | EN 10222-2 |
| Shell and channel flanges | P355 QH | EN 10222-2 |
| Cover | P265 GH | EN 10028-2 |
| Bundle tubes | P235 GH | EN 10216-2 |
| Nozzles | Gr6 | SA333 |
| Baffles | S235JRG2 | EN 10025 |
Tube to tubesheet attachment : welding and expansion
Welding procedures : according to EN ISO 15614-1 or EN 288.3 and EN ISO 15613
Welders qualifications : according to EN ISO 9606-1 and EN 14732
Quality specificities :
LOFC according to customer specifications, requirements of European and local regulations.
Operating file in English language.
Heat exchanger installed in England.
