U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5823386

Reward Candy Dispenser for Personal Computers

A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 201/44 - PLURAL DISTINCT TEMPERATURE STAGES


Subclass of Class 201 - Distillation: processes, thermolytic
Definition: Thermolytic processes as provided for in this class in which
No. of patents: 66
Last issue date: 12/06/2005


1    
NumberTitleIssue Date
6972085Continuous coking refinery methods and apparatus
A system for refining hydrocarbon containing materials in a continuous coking mode may provide a pyrolyzer (1) which may be inclined to effect a liquid seal between a liquid conduction environment (6) and a gaseous conduction environment (7). A ...
12/06/2005
6033528Process for making blast furnace coke
A blast furnace coal is produced by rapidly heating a coal blend having 10 to 30% by weight of a non-slightly-caking coal having softening initiation temperature T with the balance including a caking coal having softening initiation temperature T0
03/07/2000
5639353Apparatus for carbonizing material
An apparatus for the carbonization of materials, such as coal, comprising an elongated coking retort defined by an annulus which constitutes the coking chamber within which the coal is carbonized indirectly by conduction. In order to provide an efficient ...
06/17/1997
5607556Method for coking coal
This invention discloses a new method for the production of coke from coals. In the present invention, coke is continuously produced by heating a moving charge of coal inside the annular space between two tubes. The coking chamber, which includes a large ...
03/04/1997
5423951Process of continuously making coke of high density and strength
Pieces of coke of high density and strength are made continuously from fine particles of bituminous or subbituminous or lignite coals or of mixtures thereof. The particles are generally oxygenated, mixed with water, compressed to squeeze out some of the w...
06/13/1995
5171406Fluidized bed selective pyrolysis of coal
The present invention discloses a process for the pyrolysis of coal which comprises the effective utilization of two zonal inclined fluidized beds, where said zones can be selectively controlled as to temperature and heating rate. The first zonal inclined...
12/15/1992
5071515Method for improving the density and crush resistance of coke
The density and crush resistance of calcined coke are improved by depositing coker feedstock on green (uncalcined) coke, thereafter subjecting the coke to a heat soak and then calcining the coke....
12/10/1991
5017269Method of continuously carbonizing primarily organic waste material
A method of continuously carbonizing a mixture of primarily organic waste material wherein a stream of comminuted waste material with a substantial organic material content is fed to one end of a mixer barrel, the material is compressed to form a barrel f...
05/21/1991
5007987Method for producing needle coke
The friability of green needle coke is reduced by heating the green needle coke to a temperature between about 875° F. and about 1,200° F. for a time sufficient to reduce the friability of the green needle coke....
04/16/1991
4980028Method of controlling fuel for a coke oven
A method fo controlling fuel for a coke oven by a programmed heating method in which the fuel supply rate is changed at least once during the coal carbonization process in the coke oven, wherein the improvement comprises conducting the substantial reducti...
12/25/1990
4908104Method of continuously carbonizing a mixture of primarily organic waste material
A method of continuously carbonizing a mixture of primarily organic waste material to a high British Thermal Unit char product wherein a stream of comminuted garbage material with a substantial organic material content is fed to one end of a mixer barrel,...
03/13/1990
4894122Continuous process for the desulphurization of carbonaceous residuals from distillation of petroleum using a plurality of fluidized beds
A process for the desulphurization of residuals of petroleum distillation in the form of coke particles having an initial sulphur content greater than about 5% by weight. Desulphurization is effected by means of a continuous electrothermal process based o...
01/16/1990
4683030Method for carbonizing cold-compacted briquettes
Briquettes made from bituminous or sub-bituminous coal or peat are produced by grinding the coal, mixing it with a binder and compacting the mixture. They are then carbonized in a continuous process in a shaft oven. The coal may be predried and the finish...
07/28/1987
4618735Process and apparatus for the conversion of sludges
There is disclosed a new process for the conversion of the organic components of sludge, particularly sewage sludge, to produce useful, storable, energy-containing oil products, apparatus for carrying out the process and a control process for optimization...
10/21/1986
4588477Traveling fluidized bed distillation of scrap tires and rubber vulcanizate
Method for traveling fluidized bed distillation of coarse ground tire scrap, rubber vulcanizate (also vulcanized rubber), in a mixture with coarse aggregate. The rubber and aggregates are charges to a vertical still equipped with power burners near the bo...
05/13/1986
4561966Combination fluid bed dry distillation and coking process for oil/tar sands
A process and apparatus for direct coking of tar sands which includes contacting the tar sand with heat transfer particles resulting from combustion of coked sand effluent from the coking process, and transporting the combination up a riser/mixer to a cok...
12/31/1985
4545859Method for producing needle coke
A method is provided for producing needle coke comprising the steps of heating green needle coke at temperatures between about 935° F. and about 1,100° F. for between about 10 minutes and about 24 hours, cooling the coke to below about 250° F., and cal...
10/08/1985
4521278Method for producing needle coke
A method is provided for producing needle coke comprising the steps of heating green needle coke at temperatures between about 875° F. and about 1,200° F. for between about 10 minutes and about 24 hours, and, without first allowing the temperature of th...
06/04/1985
4511459Simultaneous coking of residual oil and partial gasification and desulfurization of coal
Coking of residual oil and devolatization/partial gasification and desulfurization of solid particulate fuel are carried out in a single reactor. The particulate fuel is burned in a combustion zone in the bottom of the reactor. A bed of particulate fuel i...
04/16/1985
4502920Apparatus for aboveground separation, vaporization and recovery of oil from oil shale
An improved retort apparatus for recovering oil from crushed oil shale moved by gravity through a passageway of an elongated housing includes a control assembly connected adjacent the outlet end of the housing to control the rate of movement of the crushe...
03/05/1985
4421604Procedure to control quality of coal
The quality of coke is improved by measuring the width of a plastic zone of a given type of coal, comparing said measured zone with a predetermined zone width known to result in good quality coke, adjusting certain characteristics of said given coal prior...
12/20/1983
4419185Pyrolysis system with hot gas recirculation
A process and system for continuously pyrolyzing organic feedstock produces a solid carbonaceous residue of controlled volatility, in a manner that is highly energy efficient. The value of the gaseous product and of the pyrolytic oil produced are also opt...
12/06/1983
4417872Heat treating
Heat treating of a material containing a carbon degradable content is carried out by segmenting the temperature range of heat treating into at least two intervals, a first one of which is able to support heat treating without blistering of the material at...
11/29/1983
4406744Process for the production of hydrogenated tar and distillates and low sulfur coke from coal
The production of hydrogenated tar and distillates from coal which is passed through successive condensing, hydrogenation, desulfurization and cooling zones of a dense bed while a flue gas is discharged into the lower portion of the desulfurization zone i...
09/27/1983
4382850Solar retorting of oil shale
An apparatus and method for retorting oil shale using solar radiation. Oil shale is introduced into a first retorting chamber having a solar focus zone. There the oil shale is exposed to solar radiation and rapidly brought to a predetermined retorting tem...
05/10/1983
4366043Method and apparatus for heat processing pulverized brown coal
Heat processing of pulverized brown coal is carried out in two stages. In a chamber for the first-stage heating, brown coal to be processed is heated to a temperature of thermal decomposition thereof with the formation of a solid matter and a vapor and ga...
12/28/1982
4353782Method of solid-state pyrolysis of organic polymeric substances
The yield of good-quality bodies consisting of vitreous carbon is increased to substantially 100% when the pyrolysis is performed in a reaction vessel in which a collecting container or a collecting disc for the condensable volatile decomposition products...
10/12/1982
4334960Process for treating partially desulfurized coke
The invention concerns a process for improving the strength properties of partially desulfurized coke, especially petroleum coke, and in such a way that it is then suitable as raw material for electrodes, in particular anodes for the fused salt electrolyt...
06/15/1982
4303415Gasification of coal
Coal is gasified, to yield a fuel gas having a medium-B.T.U. heating value, in the presence of air and steam in a plurality of reaction stages having different reaction temperatures. Reaction heat is principally supplied directly by recycle of char partic...
12/01/1981
4265710Process for calcining coke
Process for calcining green coke in at least three heating stages, which comprises preheating the green coke in the first stage, preliminarily calcining the coke in the second stage, cooling the coke; and calcining the coke in the third stage, volatile ma...
05/05/1981
4259157Method of producing abrasion-proof coke forms from bituminous coal, brown coal or peat briquets
Abrasion-proof coke forms are produced from bituminous coal, brown coal, or peat in the form of briquets, by preheating the briquets, dehydrating or predrying them, carbonizing them and then cooling them in at least three separate stages in which the briq...
03/31/1981
4259158Apparatus for producing abrasion resistant coke from brown coal briquets
A method of producing abrasion resistant coke from brown coal briquets in a shaft furnace comprises charging the coke briquets into the top of the furnace and removing coke from the bottom of the furnace while directing inert hot combustion gases into the...
03/31/1981
4256539Method of generating gas and coke dust by rapid degasification and rapid vaporization
A method of generating gas and coke dust by means of rapid degasification and rapid vaporization, with simultaneous extensive desulfurization, of coal ground into dust. In a first step, one portion of coal is subjected to complete or partial vaporization....
03/17/1981
4235830Flue pressure control for tunnel kilns
Means and method of operating a tunnel kiln in which green carbon articles are baked in the ware (article) space of a baking zone by heat produced by the combustion of fuel directed to chambers adjacent the zone. The combustion chambers are connected in f...
11/25/1980
4234386Continuous coke making
Binder is added to any finely divided coal which can be made to coalesce on heating, the particles are formed into any shape desired for its end usage, and pyrolyzed under conditions carefully controlled to limit the rate of temperature rise of the shaped...
11/18/1980
4231844Method and apparatus for producing abrasion resistant coke from brown coal briquets
A method of producing abrasion resistant coke from brown coal briquets in a shaft furnace comprises charging the coke briquets into the top of the furnace and removing coke from the bottom of the furnace while directing inert hot combustion gases into the...
11/04/1980
4230602Process for producing highly activated carbonaceous products
A single-pass, continuous process converts organic feedstocks into activated carbonaceous products having high surface area values. The introduction of air and steam into the bed of material at selected locations, and at controlled rates, enables the econ...
10/28/1980
4211632Method for heat processing of pulverized brown coal
According to the invention pulverized brown coal is processed by heating brown coal in two stages. During the first stage brown coal being processed is heated by a gaseous heat carrier to a temperature at which thermal decomposition of the brown coal begi...
07/08/1980
4210491Method and apparatus for retorting a substance containing organic matter
An improved method and apparatus for converting a substance containing organic matter into hydrocarbon vapors and solids residue by feeding the substance into the upstream portion of a substantially cylindrical retort having a substantially horizontal lon...
07/01/1980
4210492Process for the pyrolysis of coal in dilute- and dense-phase fluidized beds
A process for pyrolysis of coal wherein the subdivided coal is preheated, pyrolyzed, and subjected to heat recovery after pyrolysis, heat transfer being effected by contacting the subdivided coal as a dilute-phase fluidized bed in the first stage of dual ...
07/01/1980
1    
 
Sign InRegister
Username  
Password   
forgot password?