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US 2017/0283720 A1Published application
Pressurising of bulk material in lock hoppers
AssigneePaul Wurth S.A.
InventorsLouis SCHMIT, Ben MULLER
Life of this patent
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Abstract
A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.
Claims7
A process for pressurizing bulk material in a hopper;
- wherein the hopper is configured as a lock hopper containing a bulk material, a source of pressurized gas, lines to convey the pressurized gas from the source to one or more inlets of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.
-9. (canceled)
An apparatus for pressurizing bulk material in a hopper;
- comprising a hopper configured as a lock hopper for containing a bulk material, a source of pressurized gas, lines configured to convey the pressurized gas from the source to one or more inlets of the lock hopper, a valve arranged in the lines, wherein the apparatus is characterized in that said valve is a controllable valve, the opening position of which is controllable by a control unit, the control unit being configured to control the opening position of the valve in order to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.
Dependencies are inferred from the claim text.