Stripping and depressurization of solids and gas mixture
This patent describes an apparatus for stripping and depressurizing fine particles mixed with gas discharged from a vessel operated at elevated temperature and pressure conditions. It comprises means for receiving and conveying the mixture from the vessel, the means for receiving and conveying extending downwardly from the vessel. The means having upper and lower ends; means for selectively injecting gas into the means for receiving and conveying the mixture, thereby stripping the particulates of entrained synthesis gas; means for maintaining a substantially constant fraction of gas volume to particulates volume in the means for receiving and conveying the mixture; means for maintaining a higher pressure at the lower end of the means for receiving and conveying the mixture than the pressure within the vessel; and means located downstream from the lower end, for decreasing the pressure in the means for receiving and conveying the mixture wherein the means for decreasing pressure includes means for gradually increasing the diameter of the means for receiving and conveying the mixture.
- Assignee:
- Shell Oil Co., Houston, TX (USA)
- Patent Number(s):
- US 4976755; A
- Application Number:
- PPN: US 7-423825
- OSTI ID:
- 5143512
- Resource Relation:
- Patent File Date: 19 Oct 1989
- Country of Publication:
- United States
- Language:
- English
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