Waste Heat Recovery

Waste heat recovery

Features of the high pressure steam boilers:

• tubesheet cooling to prevent nitriding;

• channels in contact solely with the cooled synthesis gas leaving the boiler;

• freely-movable U-tube design of the bundle;

• internal bore welding, the heat exchanger tubes are joined to the tubesheet by means of full-penetration welds;

• steam/boiler water separation in the upper part of the waste heat boiler.

The design of high pressure synthesis loop boilers is a long-standing tradition at thyssenkrupp Uhde, dating back to 1969 when equipment of this type was pioneered.

Advantages of high pressure steam boilers:

• all components fabricated from hydrogen-resistant, easy-to-handle, low-alloy materials;

• elimination of stress corrosion cracking and crevice corrosion;

• low thermal stress;

• integrated boiler feed water preheating;

• tube-to-tubesheet welds all subjected to non-destructive tests.