US4018621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing slag cakes from synthesizing gas reactors
Assignee: Huels AG
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Filing: 1975-04-11
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Granted: 1977-04-19
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Expires: 1995-04-11
Abstract
Abstract A method for removing slag cakes from synthesizing gas reactors. The seal at the bottom of the reactor is removed, an orifice is melted through the partially solidified slag cake by means of the flame of an oxygen core lance, the liquid slag is drained and the residual parts of the slag cake are liquified by means of an oxygen excess powered gas flame and allowed to drain. When the seal at the bottom of the reactor is in the form of a flat frustum of a cone and made of refractory material filled into a fixed refractory ring the method is facilitated.
Inventors
- 👤 Walter Jahnentz
- 👤 Friedhard Klatt
- 👤 Karl Gaupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:07
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C01B3/363; C10; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/08; C10J3/46; C10J3/48; C10J3/52; C10J3/526; C10J3/72; C10J3/74; C10J3/76; C10J3/82; C10J3/84; C10J2200/00; C10J2200/09; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0946; C10J2300/0953; C10J2300/0959; C10J2300/0973; C10J2300/0976; C10J2300/18; C10J2300/1846; Y; Y10; Y10S; Y10S48/00; Y10S48/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A method for removing a slag cake formed in the bottom of a synthesizing gas reactor having a reactor cover located on the bottom of the reactor, comprising: a. removing said reactor cover; b. melting an orifice through said slag cake and the bottom of the reactor with said reactor cover removed by means of a flame from an oxygen core lance to form liquefied slag; c. draining said liquefied slag through said orifice; d. liquefying residual parts of said slag cake by means of an oxygen excess powered gas flame; and e. draining said liquefied residual parts through said orifice.
Claim 2
Independent Claim
101 words
A method for removing a slag cake formed in the bottom of a synthesizing gas reactor having a reactor cover located on the bottom of the reactor, comprising: a. removing said reactor cover; b. melting an orifice through said slag cake and the bottom of the reactor with said reactor cover removed by means of a flame from an oxygen core lance to form liquefied slag; c. draining said liquefied slag through said orifice; d. liquefying residual parts of said slag cake by means of an oxygen excess powered gas flame; and e. draining said liquefied residual parts through said orifice.
Claim 3
Dependent Claim
51 words
The method of claim 1, further comprising (f) the step of resealing by locating a seal at the bottom end of the reactor and replacing the reactor cover thereover, said seal comprising a flat frustum of a cone made of refractory material and fitted into a fixed ring of refractory material.
Claim 4
Dependent Claim
24 words
The method of claim 2, wherein said step of melting an orifice is carried out from above said seal after said cover is removed.
Claim 5
Dependent Claim
24 words
The method of claim 2, wherein said step of melting an orifice is carried out from below said seal after said cover is removed.
Claim 6
Dependent Claim
23 words
The method of claim 3, further comprising the step of cooling said oxygen core lance by surrounding it with a water-cooled jacketed pipe.
References Cited (Backward Citations)
US1968053A
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US2012832A
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US2885712A
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US2957936A
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US3436316A
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US3583692A
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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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |