Quenching system
AssigneeBorsig GmbH
InventorsSebastian Drus, Carsten Birk
Life of this patent
Estimating the term…
Abstract
A quenching system for a plant, operating a cracking furnace, works with liquid as well as gaseous starting materials. The quenching system includes a primary heat exchanger (PQE 10) and a secondary heat exchanger (SQE 11) and a tertiary heat exchanger. A TLX-D exchanger (TLX-D 26) is arranged and configured as the tertiary heat exchanger for dual operation. The TLX-D (26) is connected in series via a TLX-D gas feed line (24) to the SQE 11. The TLX-D (26) is connected to a steam drum (59), which is connected to a feed water line (49), via a TLX-D feed water drain line (34) and a TLX-D riser (46) and a TLX-D downcomer (38). The SQE 11 is connected to the steam drum (59), which is connected to the feed water line (49), via a TLX downcomer (52) and a TLX-riser (57).
Claims12
A quenching system for a plant for operating a cracking furnace with liquid as well as gaseous starting materials, the quenching system comprising:
- a primary heat exchanger, a secondary heat exchanger and a tertiary heat exchanger comprising a transfer-line-exchanger for dual or double or alternate operation in gas mode and liquid feed mode;
- a steam drum;
- a gas feed line;
- a feed water line;
- a transfer-line-exchanger feed water drain line;
- a transfer-line-exchanger riser;
- a transfer-line-exchanger downcomer;
- a secondary heat exchanger downcomer, wherein:
- the transfer-line-exchanger is connected in series via the gas feed line to the secondary heat exchanger;
- the steam drum is connected to the feed water line;
- the transfer-line-exchanger is connected to the steam drum via the transfer-line-exchanger feed water drain line and the transfer-line-exchanger riser and the transfer-line-exchanger downcomer;
- the secondary heat exchanger is connected to the steam drum via the secondary heat exchanger downcomer and by the secondary heat exchanger riser.
A quenching system for a plant for operating a cracking furnace with liquid as well as gaseous starting materials, the quenching system comprising:
- a primary heat exchanger;
- a secondary heat exchanger;
- a steam drum;
- a gas feed line;
- a feed water line;
- a transfer-line-exchanger feed water line with a transfer-line-exchanger feed water line valve;
- a transfer-line-exchanger feed water drain line with a transfer-line-exchanger feed water drain line valve;
- a transfer-line-exchanger riser with a transfer-line-exchanger riser valve;
- a transfer-line-exchanger downcomer with a transfer-line-exchanger downcomer valve;
- a secondary heat exchanger downcomer;
- and
- a transfer-line-exchanger arranged and configured as a tertiary heat exchanger for a dual or double or alternate operation in gas feed mode and liquid feed mode, wherein:
- the transfer-line-exchanger is connected in series via the gas feed line to the secondary heat exchanger;
- the steam drum is connected to the feed water line;
- the transfer-line-exchanger is connected to the steam drum via the transfer-line-exchanger feed water drain line and the transfer-line-exchanger riser and the transfer-line-exchanger downcomer;
- the secondary heat exchanger is connected to the steam drum via the secondary heat exchanger downcomer and by the secondary heat exchanger riser;
- the transfer-line-exchanger feed water supply line valve of a transfer-line-exchanger feed water supply line and the feed water drain valve of the transfer-line-exchanger feed water drain line are opened to provide a liquid feed mode;
- and
- the transfer-line-exchanger downcomer valve of the transfer-line-exchanger downcomer and the transfer-line-exchanger riser valve of the transfer-line-exchanger riser are closed to provide a gas feed mode.
Dependencies are inferred from the claim text.