Examples of 'spent catalyst' in a sentence
Meaning of "spent catalyst"
spent catalyst: This phrase is used in the context of chemical reactions or industrial processes to refer to a catalyst that has become deactivated or consumed after being used to facilitate a reaction
How to use "spent catalyst" in a sentence
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spent catalyst
The analysis of the spent catalyst was as follows.
No metallic iron was detected in the spent catalyst.
Preparation of spent catalyst for reuse.
Spent catalyst samples were also examined for metal phases.
Such temporarily deactivated catalyst is commonly called spent catalyst.
The spent catalyst was removed by filtration.
This stage is required when a spent catalyst is in the form of a monolith.
Here a spent catalyst is first decoked in a reductive or oxidative atmosphere.
Antimony addition may make disposal of spent catalyst more difficult.
The spent catalyst comes back to the regenerator bottom.
It is therefore advisable to replace the spent catalyst periodically with fresh catalyst.
The spent catalyst can be regenerated in two separate regenerating zones.
The gaseous components are separated from the spent catalyst in the separator.
Preparation of spent catalyst for reuse is integrated in a catalyst management scheme.
At least a portion of the coke is then burned off the spent catalyst.
See also
Spent catalyst is fed to the gasification zone of a coal gasification reactor.
The liquid phase of the spent catalyst was analyzed with a microscope.
Spent catalyst is recycled.
An internal pipe is installed and connected to the spent catalyst supply inlet.
The spent catalyst was a darker tan than the fresh catalyst.
In all the cases a spongy deposit of the carbon on the spent catalyst was obtained.
Thus spent catalyst can not be disposed of without preliminary detoxification treatment.
The intention was to improve the uniformity of the carbon material on the spent catalyst.
A portion of spent catalyst corresponding to the amount of fresh catalyst fed is removed.
The product is isolated by filtering the spent catalyst and removing the solvent.
Spent catalyst particles are stripped of strippable hydrocarbons using a stripping agent such as steam.
Considerable efforts have been made to recover nickel from spent catalyst by hydrometallurgical processes.
Method for sorting spent catalyst as a function of the metals of the catalyst.
Gases are then processed to recover desired hydrocarbons and spent catalyst sent for regeneration.
The spent catalyst may be directly contacted with the aqueous potassium hydroxide.
This operation is repeated once after the spent catalyst has been replaced with fresh catalyst.
The spent catalyst coated with a thin coke layer is passed to a regenerator vessel.
The invention relates to regeneration of spent catalyst from an FCC unit.
A portion of the spent catalyst coated with fine coke layer is passed to a regenerator reactor.
Adding antimony to FCC catalyst may make disposal of spent catalyst more difficult.
The spent catalyst may be fed into the gasification zone in any suitable fashion.
CC means catalytic cracker spent catalyst.
The spent catalyst may preferably be washed with a solvent prior to the regeneration procedure.
The ruthenium-containing spent catalyst is calcined in a muffle furnace.
The spent catalyst passes continuously from the reactor to the regenerator vía a spent catalyst standpipe.
In addition, the filtration process also removes the spent catalyst.
All of the spent catalyst from the reactor section is directed into the regenerator.
Further, a greater portion of contaminants are removed with the spent catalyst.
The prior art spent catalyst distributors use either a plurality of distribution arms or discrete slots.
Therefore, a waste liquid containing a spent catalyst did not occur at all.
Spent catalyst residence time is another control available to an FCCU operator.
Upon completion, the spent catalyst was removed by filtration.
Figure 4 shows a schematic drawing of a prior art spent catalyst distributor.
A minor portion of the solid spent catalyst will remain entrained in the hydrocarbonaceous fluid product.
Thus, such compounds can be extracted by deposition on the spent catalyst.
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