Direct quench apparatus
AssigneeStone & Webster Engineering Corp.
InventorsRay L. Geddes, Harry D. Robinson, Jr.
Life of this patent
Estimating the term…
Abstract
An apparatus for effecting direct quench of pyrolysis furnace effluent. A quench tube sized somewhat larger in diameter than the furnace effluent pipe is provided with an upper inverted ring and an external housing surrounding the terminus of the furnace effluent pipe, the quench tube and the inlet to the transfer pipe. The housing includes a chamber for quench oil, insulation space and purge gas space. In operation, quench oil is introduced continuously into the housing chamber and over the lip of the inverted ring to flow continuously down the sides of the quench tube inner wall.
Claims12
An apparatus for direct quench of pyrolysis gases issuing from a pyrolysis effluent pipe comprising:
- a quench chamber arranged in series alignment following the pyrolysis effluent pipe, which quench chamber is configured in cross-section uniformly in the shape of the termination of the effluent pipe and the inside dimensions of the quench chamber are uniformly larger throughout the entire length thereof than the dimension of the inside diameter of the effluent pipe by the thickness of the layer of quench oil used to flow down the quench chamber inner wall;
- a ring on the entry end of the quench chamber extending upwardly and outwardly therefrom in proximity to the terminus of the effluent pipe;
- means to protect the effluent pipe from quench oil flowing over the ring;
- a quench oil reservoir arranged concentrically around the upper portion of the quench chamber extending above the top of the ring;
- and
- means to introduce quench oil into the quench oil reservoir and over the upper edge of the ring into the interior of the quench chamber to flow down the walls thereof;
- whereby when quench oil is made to flow down the walls of the quench chamber, the inside diameter of the quench oil film is the same as the inside diameter of the termination of the effluent pipe.
An apparatus for direct quench of furnace effluent issuing from a furnace effluent pipe comprising:
- a quench chamber arranged in series following the furnace effluent pipe, which quench chamber is configured in the shape of the termination of the effluent pipe;
- a ring on the entry end of the quench chamber extending upwardly and outwardly therefrom in proximity to the terminus of the effluent pipe, which ring has a curvilinear path for the quench oil to enter the quench chamber;
- a quench oil reservoir arranged concentrically around the upper portion of the quench chamber extending above the top of the ring;
- means to introduce quench oil into the quench oil reservoir and over the upper edge of the ring into the interior of the quench chamber to flow down the walls thereof;
- a baffle between the effluent pipe and the ring;
- and
- a purge gas chamber above the baffle such that purge gas is conducted between the terminus of the effluent pipe and the baffle.
Dependencies are inferred from the claim text.