← Back to Patent Explorer
US4356004A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for forming charging fuel into agglomerates for the pressure gasification of coal

Assignee: Steag GmbH
•
Filing: 1980-07-07
•
Granted: 1982-10-26
•
Expires: 2000-07-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A process for forming charging fuel into agglomerates for the pressure gasification of coal, comprises the steps of mixing fine, granular charging fuel with a binder outside the pressure reactor, subjecting the mixture, in a pressure vessel, to the pressure prevailing in the reactor, and feeding agglomerates produced from the mixture to the fixed bed of the reactor from above. The mixture is made with a binder which hardens when heated and is kept below hardening temperature during subsequent subjection to pressure until fed to the reactor, the agglomerates being produced by hardening of the binder in the heat prevailing in the reactor above the fixed bed.

Inventors

  • 👤 Artur Richter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:10
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/30; C10J3/72; C10J3/74; C10J3/76; C10J2300/00; C10J2300/09; C10J2300/0903; C10J2300/0906; C10J2300/0909; C10J2300/0913; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 170 words
A process for forming charging fuel into agglomerates for the pressure gasification of coal, comprising the steps of: mixing fine, granular charging fuel of a particle size up to 30 millimeters, with a binder outside the pressure reactor, passing said mixture to a pump assembly, pumping said mixture through a first pipe, wherein the mixture forms a pressure-tight, heat-checking seal, and into a hollow worm heat exchanger, equalizing the pressure of the mixture when it is in the worm heat exchanger and the pressure prevailing in the reactor while cooling said mixture, feeding the mixture through a second pipe, wherein the mixture forms a pressure tight seal, to the fixed bed of the reactor from above, and gasifying the coal in the reactor; said mixture being made with a binder which hardens when heated and being kept below hardening temperature during subsequent subjection to pressure until fed to the reactor, the agglomerates being produced by hardening of the binder in the heat prevailing in the reactor above the fixed bed.
Claim 2
Dependent Claim 170 words
A process for forming charging fuel into agglomerates for the pressure gasification of coal, comprising the steps of: mixing fine, granular charging fuel of a particle size up to 30 millimeters, with a binder outside the pressure reactor, passing said mixture to a pump assembly, pumping said mixture through a first pipe, wherein the mixture forms a pressure-tight, heat-checking seal, and into a hollow worm heat exchanger, equalizing the pressure of the mixture when it is in the worm heat exchanger and the pressure prevailing in the reactor while cooling said mixture, feeding the mixture through a second pipe, wherein the mixture forms a pressure tight seal, to the fixed bed of the reactor from above, and gasifying the coal in the reactor; said mixture being made with a binder which hardens when heated and being kept below hardening temperature during subsequent subjection to pressure until fed to the reactor, the agglomerates being produced by hardening of the binder in the heat prevailing in the reactor above the fixed bed.
Claim 3
Dependent Claim 12 words
A process according to claim 1, wherein the binder is sulphite liquor.
Claim 4
Dependent Claim 17 words
A process according to claim 1, wherein the mixture is cooled while passing through said second pipe.

References Cited (Backward Citations)

US1224335A Cited
US2707148A Cited
US3310836A Cited
US3263748A Cited
US3893504A Cited
US4057400A Cited
US4033730A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-10-25 1986-04-26 1986-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-10-25 1990-04-26 1990-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-10-25 1994-04-26 1994-10-26 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag