Shell Oil Comapny

Leslie C Shirvill

Christopher Morley

Stephen G Bryce

Kenneth F Coles

Dominick A McCausland

An apparatus (1) is provided for compressing gas, the apparatus comprising a conduit (3) provided with a non-return inlet valve (10) arranged at the upstream inlet (5) end of the conduit (3), a localized ignition source (20) arranged in the conduit (3) downstream of the non-return inlet valve (10), and means (23) for intermittently supplying secondary fluid into the conduit (3) between the non-return inlet valve (10) and the localized ignition source (20).

Compressing gas flowing through a conduit

Burner (1) for a gaseous fuel comprising a distributing zone (2) surrounded by an outer wall (4) of a porous medium, an air supply tube (9) debouching in the distributing zone (2), a fuel supply tube (12), and a mixing head (13) arranged in the air supply tube (9), which mixing head (13) comprises a box (15) in which the fuel supply tube (12) debouches and open-ended mixing tubes (23 and 24), which extend through the box (15), wherein the part of the wall of a mixing tube (24 or 25) located in the box (15) is provided with openings (29).

Burner for a gaseous fuel

A surface-combustion radiant burner comprising a frame 1 of impermeable material supporting a porous element 2 permeable to gas and conduit means 7 to conduct a combustible gas mixture into a gas distributing space 5 enclosed by the frame 1 and the porous element 2, the porous element 2 being formed of metal particles of an alloy containing iron, chromium and aluminum and having the property of forming an alumina layer on heating in the presence of oxygen. And, a method of using such a burner for burning gas and air mixtures at high temperatures while minimizing nitrogen oxide production and burner corrosion.

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Chester, United Kingdom

Leslie C Shirvill