US3827830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intensifier system
Assignee: HORN R VAN
•
Filing: 1972-05-03
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Granted: 1974-08-06
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Expires: 1992-05-03
Abstract
Abstract An intensifier system for supplying catalyst to a polyolefin reactor wherein the pressure of the olefin is applied to a vessel containing a hydraulic fluid with a pump submerged in the hydraulic fluid, and the pump pressurizes one end of a free piston cylinder to force catalyst from the other end of the cylinder into the reactor. An identical system supplies catalyst to the reactor while the first system is being recharged. Recharging of the system is accomplished by relieving the pressure in the vessel to a low pressure, and applying an intermediate pressure to force catalyst from a catalyst storage container into the catalyst end of the free piston cylinder, thereby causing the hydraulic fluid to flow from the cylinder back into the vessel.
Inventors
- 👤 Horn R Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:35
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J3/00; B01J3/02; B01J8/18; B01J8/1809; C; C08; C08F; C08F10/00; B01J2208/00; B01J2208/00743; B01J2208/00752; Y; Y10; Y10S; Y10S526/00; Y10S526/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
432 words
Apparatus comprising a high pressure olefin polymerization reactor, a source of olefin under high pressure, means connecting said source to said reactor, whereby olefin at said high pressure may be supplied to said reactor, a pressure-tight vessel, a conduit connecting said source to said vessel whereby olefin at said high pressure may be supplied to said vessel, valve means in said conduit operable to allow and prevent flow to said vessel, a pump in said vessel having its suction line open to a lower portion of the vessel, a low-pressure header, a second conduit connecting said header to an upper portion of said vessel, valve means in said second conduit operable to allow and prevent communication between said vessel and said header, a free-piston cylinder, a third conduit connecting the discharge line of said pump to one end of said cylinder, valve means in said third conduit operable to prevent flow therethrough toward said pump, a fourth conduit connecting said one end of said cylinder to said vessel, valve means in said fourth conduit operable to regulate flow from said one end of said cylinder toward said vessel and to prevent flow therethrough from said vessel toward saiD one end of said cylinder, a source of catalyst at intermediate pressure, a fifth conduit connecting said catalyst source to the other end of said cylinder, valve means in said fifth conduit operable to allow and prevent communication between said catalyst source and said cylinder, a sixth conduit connecting said other end of said cylinder to said reactor, valve means in said sixth conduit operable to prevent flow from said reactor toward said cylinder, and control means connected to said valve means, said control means having a first position in which the valve means are operated to allow flow from said olefin source to said vessel, from said pump to said one end of said cylinder, and from said other end of said cylinder to said reactor, while preventing flow between said vessel and said header, said vessel and said one end of said cylinder, and said other end of said cylinder and said catalyst source, and having a second position in which the valve means are operated to allow flow from said catalyst source to said other end of said cylinder, from said one end of said cylinder to said vessel, and from the upper portion of said vessel to said header, while preventing flow from said reactor to said other end of said cylinder, from said one end of said cylinder to said pump, and from said olefin source to said vessel.
Claim 2
Dependent Claim
432 words
Apparatus comprising a high pressure olefin polymerization reactor, a source of olefin under high pressure, means connecting said source to said reactor, whereby olefin at said high pressure may be supplied to said reactor, a pressure-tight vessel, a conduit connecting said source to said vessel whereby olefin at said high pressure may be supplied to said vessel, valve means in said conduit operable to allow and prevent flow to said vessel, a pump in said vessel having its suction line open to a lower portion of the vessel, a low-pressure header, a second conduit connecting said header to an upper portion of said vessel, valve means in said second conduit operable to allow and prevent communication between said vessel and said header, a free-piston cylinder, a third conduit connecting the discharge line of said pump to one end of said cylinder, valve means in said third conduit operable to prevent flow therethrough toward said pump, a fourth conduit connecting said one end of said cylinder to said vessel, valve means in said fourth conduit operable to regulate flow from said one end of said cylinder toward said vessel and to prevent flow therethrough from said vessel toward saiD one end of said cylinder, a source of catalyst at intermediate pressure, a fifth conduit connecting said catalyst source to the other end of said cylinder, valve means in said fifth conduit operable to allow and prevent communication between said catalyst source and said cylinder, a sixth conduit connecting said other end of said cylinder to said reactor, valve means in said sixth conduit operable to prevent flow from said reactor toward said cylinder, and control means connected to said valve means, said control means having a first position in which the valve means are operated to allow flow from said olefin source to said vessel, from said pump to said one end of said cylinder, and from said other end of said cylinder to said reactor, while preventing flow between said vessel and said header, said vessel and said one end of said cylinder, and said other end of said cylinder and said catalyst source, and having a second position in which the valve means are operated to allow flow from said catalyst source to said other end of said cylinder, from said one end of said cylinder to said vessel, and from the upper portion of said vessel to said header, while preventing flow from said reactor to said other end of said cylinder, from said one end of said cylinder to said pump, and from said olefin source to said vessel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |