Johnson Matthey Inc.

Johnson Matthey Public Limited Company

Johnson Matthey Davy Technologies Limited

Matthew John Cousins

David Jonathan Davis

Christopher John Young

Mark Robert Feaviour

Edmund Hugh Stitt

William Maurice Sengelow

Alison Mary Wagland

Stephen David Pollington

Andrew Fish

Michelle Taylor Wilson

Kevin Young

Nicola Campbell McKidd

Michael Davies

Lucy Jane Challis

Claire Cahill

Michele Marigo

Colin Baptist

John David Pach

Paul Rafferty

Alan Gordon Tapster

Lucy Jane Hetherington

Robert Logan

Peter Stones

Andrew Johnson

Anne-Marie Christina Alexander

Paul White

Sarah Ridley

Nicola Campbell Mckidd

David Davis

A method is described for controlling a furnace containing a plurality of catalyst-containing tubes heated by a combustion gas generated by a plurality of burners, said method comprising the steps of: (i) measuring path-averaged combustion gas temperatures on multiple paths through the furnace using tunable diode laser absorption spectroscopy, (ii) periodically measuring temperatures of surfaces within the furnace to obtain periodic surface temperature information, (iii) entering the path-averaged combustion gas temperatures and periodic surface temperature information into a computer model of the furnace, said model comprising parameters for controlling the furnace; and (iv) using the computer model and the temperature information to obtain optimised parameters for controlling the furnace. A system for performing the method is also described.

Furnace control method

A method of recording images within a furnace using a thermal imaging camera comprising a bore scope connected to a digital camera unit is described, comprising the steps of: (a) inserting the borescope into the interior of the furnace, (b) collecting one of more images of the interior of the furnace using the thermal imaging camera with the borescope at a first position, and (c) moving the borescope from the first position to a second position and collecting one or more images of the interior of the furnace as the borescope is moved from the first position to the second position, wherein the borescope movement is guided by means of a guide device comprising a movable borescope mounting, mounted externally on the furnace.

Method of recording images within a furnace using a thermal imaging camera comprising a borescope

A process is described for increasing the hydrogen content of a synthesis gas mixture comprising hydrogen, carbon oxides and steam, comprising the steps of: passing the synthesis gas mixture at an inlet temperature in the range 170-500&#xb0; C. over a water-gas shift catalyst to form a hydrogen-enriched shifted gas mixture, wherein the water-gas shift catalyst is in the form of a cylindrical pellet having a length C and diameter D, wherein the surface of the cylindrical pellet has two or more flutes running along its length, said cylinder having no through-holes and domed ends of lengths A and B such that (A+B+C)/D is in the range 0.25 to 0.25, and (A+B)/C is in the range 0.03 to 0.30.

Water gas shift process

A catalyst precursor, suitable for use after reduction as a water-gas shift catalyst, is described, which is in the form of a pellet comprising one or more oxides of iron, wherein the catalyst precursor has a pore volume 0.30 cm/g and an average pore size in the range 60 to 140 nm The precursor may be prepared by calcination of precipitated iron compounds at temperatures in the range 400-700&#xb0; C.

Water-gas shift catalyst

A process is described for removing halogen compounds, particularly chlorine compounds, from a process fluid, comprising the steps of (i) passing a process fluid containing hydrogen halide over a first sorbent to remove hydrogen halide and generate a hydrogen halide depleted process fluid and then, (ii) passing the hydrogen halide depleted process fluid over a second different sorbent to remove organic halide compounds therefrom. A purification system suitable for removing hydrogen halide and organic halide compounds from process fluids is also described.

Purification process

A process for removing halogen compounds, particularly chlorine compounds, from a process fluid, includes the steps of (i) passing a process fluid containing hydrogen halide over a first sorbent to remove hydrogen halide and generate a hydrogen halide depleted process fluid and then, (ii) passing the hydrogen halide depleted process fluid over a second different sorbent to remove organic halide compounds therefrom. A purification system suitable for removing hydrogen halide and organic halide compounds from process fluids is also described.

A method for preparing a sorbent composition includes the steps of:

Sorbent

A method for producing a sulphided copper sorbent includes the steps of: (i) contacting a sorbent precursor material containing one or more sulphidable copper compounds, with a sulphiding gas stream including hydrogen sulphide to form a sulphided sulphur-containing sorbent material, and (ii) subjecting the sulphided sulphur-containing sorbent material to a heating step in which it is heated to a temperature above that used in the sulphiding step and &#x2267;110&#xb0; C., under an inert gas selected from nitrogen, argon, helium, carbon dioxide, methane, and mixtures thereof, the inert gas optionally including hydrogen sulphide. The method provides sulphided copper sorbents that have reduced levels of elemental sulphur.

Method for producing a sulphided copper sorbent

A sorbent, suitable for removing heavy metals, particularly mercury, from fluid streams containing a reductant such as hydrogen and/or carbon monoxide, is in the form of a shaped unit containing &#x2266;0.1% by weight in total of heavy metal selected from mercury, arsenic, lead, cadmium and antimony, and 4-75% by weight of copper in the form of one or more reduced copper sulphides which have a sulphur to copper atomic ratio of &#x2266;0.6:1.

Reduced copper sulphide sorbent for removing heavy metals

An adsorbent suitable for heavy metal adsorption is described, comprising a thiol functionalized support wherein the adsorbent has a BET surface area in the range 200-500 m/g, a pore diameter in the range 70-150 Angstroms and a pore volume &#x2267;0.25 cm/g. The adsorbent may be used to remove heavy metals e.g. mercury and/or arsenic, from wastewater streams such as produced water or flue gas scrubber waters.

Adsorbents

An adsorbent suitable for heavy metal absorption is described, comprising a thiol-functionalised support containing a stabilising amount of an alkaline metal reacted with said thiol functionality. The adsorbent may be used to remove heavy metals e.g. mercury and/or arsenic, from wastewater streams such as produced water or flue gas scrubber waters.

A process for desulfurizing a process fluid includes contacting a sulphur compound containing feed stream with an absorbent including an iron, copper or nickel compound capable of forming a metal sulphide, a support material, a first binder and a second binder where the first binder is a cement binder and the second binder is a high aspect ratio aluminosilicate clay binder having an aspect ratio &#x3e;2 and a ratio of the first binder to the second binder is in the range 2:1 to 3:1.

Sulphur removal

An absorbent composition suitable for removing mercury, arsenic or antimony from fluid streams includes 5-50% by weight of a particulate sulphided copper compound, 30-90% by weight of a particulate support material, and the remainder one or more binders, wherein the metal sulphide content of the absorbent, other than copper sulphide, is below 5% by weight.

Absorbents

A mercury absorbent comprising a metal sulphide, a support material, a first binder and a second binder, wherein the first binder is a cement binder and the second binder is a high aspect ratio binder having an aspect ratio &#x3e;2. A mercury removal process comprises contacting a mercury containing feed stream with the absorbent.

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Darlington, United Kingdom

Matthew John Cousins