| Patent Number |
Title Of Patent |
Date Issued |
| 5824121 |
Apparatus for the pressure gasification of finely divided fuels |
October 20, 1998 |
| A gasification reactor has a mixing tube above it in a common pressure vessel and the mixing tube is provided with a gas cooling heat exchanger. A driving gas feeder draws a portion of the mixture of quenching gas and raw gas from the mixing tube, passes it through the gas cooling heat |
| 5767332 |
Process and apparatus for producing aromatic hydrocarbon composition |
June 16, 1998 |
| In the production of aromatic hydrocarbon from coking crude by-product benzene after a vaporization stage in which the crude benzene is evaporated to leave a residue, the crude benzene is subjected to pressure refining in the presence of hydrogen. The residue is distilled to form hig |
| 5753012 |
Method for the cleaning of flue gases with different contents of acidic components |
May 19, 1998 |
| A method of operating an apparatus for the cleaning of industrial waste gases and especially power plant flue gases. The gases are fed through a quencher to a first scrubber with its own recirculation and upstream of a second scrubber having its own recirculation and aerosols of halogen |
| 5723026 |
Process for recovering pure benzene and pure toluene from aromatic hydrocarbon products |
March 3, 1998 |
| The production of high purity benzene and high purity toluene is obtained by utilizing the initial gas separating column for the treatment of the aromatic containing starting material as a separating column for separating a benzene rich from a toluene rich component. The benzene rich |
| 5672326 |
Method of treating vapors containing ammonia and hydrogen sulfide |
September 30, 1997 |
| Ammonia and 5 to 40 volume percent hydrogen sulfide containing vapors which arise in the vaporization of process water from hydrogenation or a crude oil fraction or in gas treatment in a coking plant, can be subjected in a cracking catalyst reactor to breakdown of the ammonia to nitrogen |
| 5658434 |
Coke-oven door assembly |
August 19, 1997 |
| A coke-oven door assembly has a rigid door, a mounting block adjacent the door, a door-plug backing plate fixed to the mounting block, and a membrane having a center portion between the backing and mounting blocks and a periphery juxtaposed with a coke-oven door jamb. A blade-type seal |
| 5607594 |
Process for purifying an aqueous methyldiethanolamine solution |
March 4, 1997 |
| In the process for purifying an aqueous MDEA-solution the formate content of the MDEA-solution circulated in a main stream between the absorber and desorber of a hydrogen sulfide wash unit for gas produced by gasification of a carbonaceous material, e.g. coal, is measured. A partial stre |
| 5571295 |
Process for cooling of a partial oxidation crude gas |
November 5, 1996 |
| The process for cooling of partial oxidation crude gas includes partially oxidizing a fine grained to powdery combustible material in a flow gasifier in the presence of water vapor and an oxidizing member selected from the group consisting of oxygen and air at pressures of up to 100 bar |
| 5470361 |
Process for working up municipal plastic waste materials by gasification |
November 28, 1995 |
| In the process for gasification of municipal waste plastic waste material pieces of about a 20 mm piece size are compressed and heated at a pressure of from 40 to 80 bar until at a temperature of from 230.degree. to 300.degree. C. to produce an HCl-containing gas and a plastic waste |
| 5445658 |
Gasification apparatus for a finely divided combustible material |
August 29, 1995 |
| The gasification apparatus for gasification of finely divided combustible material under pressure includes a gasification reactor which produces a crude gas, a quenching pipe and a convection-heated boiler with a boiler housing, all mounted inside a pressurized vessel. A gas flow guiding |
| 5443694 |
Method of restoring heating walls of coke oven battery |
August 22, 1995 |
| Renovation of a heating wall, in particular a heating wall head of a coke oven battery, includes starting with reconstruction of the wall to be renovated on a wall protective plate of the part, abutting a new masonry exactly on the wall protective plate, and arranging between the new |
| 5441547 |
Method for gasification of a finely divided combustible material |
August 15, 1995 |
| The gasification process includes providing a gasification reactor for gasifying a finely divided combustible material under pressure to form a crude gas with cinder and ash components, a quenching pipe positioned concentrically above the gasification reactor, a convection-heated boiler |
| 5306396 |
Leveling door |
April 26, 1994 |
| A leveling door for sealing a leveling opening of a coke oven door has a leveling door body, a diaphragm sheet mounted on the leveling door body at its side facing a leveling opening so as to cover the leveling opening, the diaphragm sheet having an edge and being provided on the edge wi |
| 5259932 |
Heating system for regenerative coke ovens |
November 9, 1993 |
| According to the invention the heating system for regenerative coke oven batteries that can be heated with rich gas and/or lean gas or mixed gas is provided comprising vertical flues cooperating in pairs, each vertical flue being connected to a regenerator for preheating the air and, in |
| 5252200 |
Method of separating an aromatic from a hydrocarbon mixture |
October 12, 1993 |
| The process for separating an aromatic from an entry hydrocarbon mixture also containing nonaromatics, by an extractive distillation method using an extractive distillation column with a selective solvent consisting essentially of an N-substituted Morpholine having substituents each of |
| 5238540 |
Method of obtaining a pure aromatic hydrocarbon from a sump product of an extractive distillatio |
August 24, 1993 |
| The method of obtaining a pure aromatic hydrocarbon from a hydrocarbon starting mixture includes extractively distilling the hydrocarbon starting mixture with a selective solvent; feeding the sump product of the extractive distillation through a first and second auxiliary boilers con |
| 5234553 |
Process for obtaining a pure hydrocarbon from a sump product of an extractive distillation |
August 10, 1993 |
| Process for obtaining a pure hydrocarbon from a starting material containing the hydrocarbon including performing an extractive distillation of the starting material containing the hydrocarbon in an extractive distillation column using a solvent comprising an N-substituted morpholine |
| 5215629 |
Method of separating aromatics from a hydrocarbon mixture having an aromatic content |
June 1, 1993 |
| A process for separating an aromatic from a mixture containing also nonaroma includes distilling off the nonaromatics from the top of the extractive distillation column as a top product, drawing the aromatic and selective solvent from the extractive distillation column and subsequently |
| 5180474 |
Method of separation of aromates by extractive distillation |
January 19, 1993 |
| A method of separation of aromates from hydrocarbon mixtures by extractive distillation with a selective solvent, includes introducing a hydrocarbon mixture into the extractive distillation column, distillating out non-aromate components of the introduced hydrocarbon mixture from a head |
| 5107055 |
Method for simultaneous recovery of pure benzene and pure toluene |
April 21, 1992 |
| A simultaneous recovery of pure benzene and pure toluene is performed by extractive distillation with N-formylmorpholine and/or other N-substituted morpholines whose substituents contain not more than seven C-atoms as a solvent. From the entry product by predistillation, a benzene fracti |
| 5100640 |
Method of operating a Claus-plant |
March 31, 1992 |
| The method of performing the Claus process includes the steps of connecting in parallel two combustion furnaces with waste heat boilers, further reacting, after the partial combusting in the combusion furnaces, in a single Claus reactor which is connected to both of the waste heat boiler |
| 5092765 |
Method and arrangement for hot repair of heating trains of coke oven battery |
March 3, 1992 |
| A method of hot repair heating trains of a coke oven battery includes brick laying of a heating train, warming a finished portion of a respective heating train during the brick laying to a temperature of approximately 250.degree. C., directly after ending the brick laying heating a new |
| 5080761 |
Method of optimizing the operation of a distillation column provided with a side heating device |
January 14, 1992 |
| In a method of optimizing the operation of a distillation column with a side heating device for reconditioning of extract which is received during the extraction of hydrocarbon-containing initial products with N-substituted morpholines whose substituents have not more than seven C-at |
| 5066476 |
Method of producing hydrogen-rich gas |
November 19, 1991 |
| A gas with a hydrogen content of at least 85 volume percent of partial oxidation crude gas is produced in a method including cooling of the gas after waste heat boiler of a gasifier by adding converted circulating gas in a quenching zone. The resulting gas mixture after corresponding gas |
| 5062925 |
Method of reducing the nitrogen dioxide content of flue gas from a coke oven with dual heating f |
November 5, 1991 |
| The method of reducing a nitrogen oxides content of a flue gas generated on firing of a rich gas or combination coke oven having a plurality of heating walls forming dual heating flues, in which a single stage or multistage combustion takes place, and also having a plurality of regen |
| 5058534 |
Pipe wall of hot reaction chambers |
October 22, 1991 |
| A pipe wall for hot reaction chambers comprises a plurality of pipes which together define a side to be heat loaded, and a plurality of holding elements arranged on the heat-loaded side for holding a temperature resistant coating. The pipes on the heat-loaded side together forming a |
| 5057190 |
Stripping column installation for separating materials with high boiling point difference |
October 15, 1991 |
| A stripping column installation especially for separating starting materials with a high boiling point difference comprises a stripping column having a withdrawal plate and a column sump, and a circulating boiler connected with the stripping column and having a pipe bundle through wh |
| 5055630 |
Process for making p-xylene with a purity of more than 99.8% by weight |
October 8, 1991 |
| The process for obtaining a p-xylene final product more than 98% pure from a crystalline starting material with a purity of about 98%, includes the steps of intermixing the starting material with precooled water and fed back recovered p-xylene in a mixer at a temperature of 0.degree. to |
| 5034102 |
Column for distillation of charge products having a tendency for two-phase formation in sump |
July 23, 1991 |
| The column for distillation of charge products which form a heavier liquid phase and a lighter liquid phase and connected sump circulating boiler are provided with a liquid impermeable collecting bottom plate located in a lower part of the column. The bottom plate has a discharge passage |
| 5031754 |
Method of working up an overhead product of an extractive distillation of a hydrocarbon mixture |
July 16, 1991 |
| A hydrocarbon material of the starting product is separated in an extractive distillation column in which an N-substituted morpholine whose substituents do not have more than seven carbon atoms is used as a selective solvent. The overhead product comes down as a top product of the ex |
| 5017270 |
Method of reducing nox-content in flue gas during heating of coking oven |
May 21, 1991 |
| NO.sub.x -content in a flue gas during heating of coking oven with heating trains cooperating in pairs, high and low lying combustion stages, and flue gas return at a height of a heating train sole in a circulating stream, is reduced by adjusting a circulating stream rate defined by a |
| 4997547 |
Method for the production of an aromate concentrate suitable for use as blending component for f |
March 5, 1991 |
| In the method for the production of an aromate concentrate suitable for use as blending component for gasifier fuel, feed hydrocarbon mixtures having boiling ranges substantially between 40.degree. and 170.degree. C., are subjected, without any previous separation into individual fractio |
| 4994093 |
Method of producing methanol synthesis gas |
February 19, 1991 |
| In accordance with a method of producing of methanol synthesis gas from a partial oxidation crude gas, the gas is cooled after a waste heat boiler of a gasifier by adding a converted circulating gas in a quenching zone. The resulting gas mixture is dedusted and then separated into a prod |
| 4978368 |
Device for cooling hot product gas exiting from a gasification reactor |
December 18, 1990 |
| The cooling of a stream of hot product gas exiting from an outlet opening of a gasification reactor is made by way of two separate partial streams of cooling fluid such as a cooling gas, vapor or liquid. The first partial stream of the cooling fluid is fed from the outside substantially |
| 4973340 |
Method of removing hydrosulfide from partial oxidation gas |
November 27, 1990 |
| A method of removing hydrosulfide from a crude gas produced by partial oxidation of carbon-containing material comprises the steps of treating a gas at a temperature between 10.degree. and 60.degree. C. with a suitable absorption solution, regenerating the absorption solution loaded durh |
| 4973337 |
Arrangement for cooling hot product gas with adhesive or fusible particles |
November 27, 1990 |
| The arrangement for cooling a hot product gas containing adhesive or fusible particles which lose their adhesiveness during cooling, has a reactor for producing the hot product gas, a cooling duct connected with the reactor for the hot product gas, a nozzle ring subdivided into a plu |
| 4971777 |
Process for the removal of acid components and nitrogen oxides from the waste gases of industria |
November 20, 1990 |
| The process removes acid components including sulfur oxides and nitrogen oxides from the exhaust gases of industrial furnaces and includes oxidizing the nitrogen oxide contained in the exhaust gases with the oxygen contained in the exhaust gases at a exhaust gases temperature between |
| 4971600 |
Arrangement for gasifying fuel |
November 20, 1990 |
| An arrangement for gasification of fuels within the range from fine grain fuel to dust shaped fuels, in a dust cloud with gas comprises a gasification reactor provided with at least two burners, a supply container for accommodating a fuel, a distributor connected to the supply contai |
| 4954136 |
Method of cooling hot product gas with adhesive or fusible particles |
September 4, 1990 |
| A method for cooling a hot product gas containing adhesive or fusible particles include injecting a ring-shaped jet of a cooling fluid into a gas to be cooled in a cooling zone in a flow direction of the gas, with separation of the jet into a plurality of individual cooling fluid jets |
| 4952750 |
Process for making p-xylene with a purity of at least 99.5% |
August 28, 1990 |
| This process is an improvement of a process described in German Open Patent Application No. 3703646 for obtaining a p-xylene product with a purity of at least 99.5%. The inert fluid used as a cold carrier is mixed with a crude product starting material, which has a high p-xylene content, |
| 4950308 |
Apparatus for producing a product gas from a finely-divided carbon-bearing substance |
August 21, 1990 |
| The apparatus for producing a product gas from a fine-grained carbon-bearing substance during a high-pressure gasification comprises a vertical gasifier and radiative cooling device, a vertical convective cooling device through which a flow occurs from top to bottom and a connecting |
| 4936873 |
Method of cooling hot product gas exiting from a gasification reactor |
June 26, 1990 |
| The cooling of a stream of hot product gas exiting from an outlet opening of a gasification reactor is made by way of two separate partial streams of cooling fluid such as a cooling gas, vapor or liquid. The first partial stream of the cooling fluid is fed from the outside substantially |
| 4936871 |
Method of cooling partial oxidation gas |
June 26, 1990 |
| Decribed is a method of cooling partial oxidation gas exiting at a temperature between 1,000.degree. and 1,700.degree. C. from a conically converging outlet portion of a reactor vessel into a subsequent tubular cooling zone. To prevent deposition of sticky molten impurities entrained |
| 4936870 |
Process for determination and control of fuel mass flow in partial oxidation and gasification of |
June 26, 1990 |
| The process for determining and controlling the fuel mass flow in partial oxidation and gasification of a fine-grained to powdery fuel includes particularly drawing the fuel from the supply vessel through a single outlet pipe and feeding the fuel to a distributor, in which a plurality of |
| 4925535 |
Process for the production of an aromate concentrate suitable for use as blending component for |
May 15, 1990 |
| The process for production of an aromate concentrate for use as a blending component for gasification fuel includes subjecting another feed hydrocarbon mixture to an extractive distillation using N-substituted morpholines as selective solvent in a extractive distillation column. Low- |
| 4893912 |
Device for observing a hot reaction space in the interior of a reactor operating at increased pr |
January 16, 1990 |
| A tubular housing is provided at one end thereof with a protective glass prism facing an observation opening in a pressurized reactor. The other end of the housing is closed and the intermediate part thereof supports an inclined mirror. A viewing tubular piece is arranged transversely to |
| 4842695 |
Arrangement of a dry cooler for coke |
June 27, 1989 |
| A dry cooling installation for coke includes an upright cooling shaft having an upper inlet for coke to be cooled and a lower inlet for a recirculating counterstream of cooling gas. Two gas discharge ducts are connected at two opposite points to the cooling shaft and communicate resp |
| 4825638 |
Method of and device for recovering heat energy of hot raw gas gererated a coal gasification arr |
May 2, 1989 |
| In an electric energy generating plant including a coal gasification arrangement and a combined gas turbine and steam combine, hot raw gas generated in the gasification arrangement is fed via a heat-exchanging and dust separating unit into a desulfurization unit from which cool purified |
| 4818252 |
Arrangement for gasifying finely divided particularly solid fuel under high pressure |
April 4, 1989 |
| An arrangement for and a method of gasifying finely divided, particularly solid fuel under increased pressure with a multi-pipe wall having a plurality of pipes arranged to be supplied with a cooling medium, the multi-pipe wall limiting a gas-collecting chamber and also limiting a pl |
| 4810417 |
Process for the simultaneous production of methanol synthesis gas and ammonia synthesis gas |
March 7, 1989 |
| A process for the simultaneous production of methanol synthesis gas and ammonia synthesis gas proceeds from the crude gas of a coal gasification, which initially is subjected to a H.sub.2 S-washing at low temperatures. Then follows a splitting of the desulfurized gas into two partial str |
