Patent application number | Description | Published |
20080276845 | Compact pulverized coal burner - Disclosed is a burner for oxidant gasification of pulverized fuels under high pressures, e.g. 80 bar, and temperatures, e.g. 1200 to 1900° C., in reactors with liquid slag removal for oxygen gasification. The individual pulverized coal supply tubes in the burner are inclined toward the burner axis in the direction of the burner mouth, are implemented equiareally from the burner inlet up to the burner outlet, and end at the burner mouth adjacent to the oxidant outlet. Owing to the pulverized fuel feeding elements being implemented right up to the burner mouth and the instantaneous entry of the pulverized coal into the rotating oxygen stream there is no longer any areal discontinuity at the dust outlet, since here the pulverized coal stream is immediately sucked into the oxidant stream. At the outlet of the media the individual pulverized coal streams merge into a single rotating pulverized coal/oxygen stream, thereby achieving an even flame spread and stabilization. | 11-13-2008 |
20080280237 | Oil gasification burner for ash-free liquid fuel - An oil gasification burner for liquid fuel is proposed which comprises, on a centrally arranged pilot burner part, a number of supply elements arranged outside the annular channel concentrically to the burner axis with pressure atomizer nozzles for introduction of liquid fuel. The pressure atomizer nozzles are embodied such that a fine atomization of the liquid fuel occurs before it comes into contact with the rotated oxidation means. Different liquid fuels can be supplied via the individual supply elements. This enables the nozzle parameters to be adapted to the particular conditions (pressure difference, fineness of droplets, spray angle etc.) of the liquid fuel through a choice of replaceable nozzle. | 11-13-2008 |
20080280241 | Oil/slurry burner with injection atomization - An oil/slurry burner with injection atomization for the gasification of solids-containing liquid fuels under high pressures of e.g. 80 bar (8 MPa) and high temperatures of e.g. 1200 to 1900 degrees centigrade in reactors with liquid slag removal is proposed, wherein a plurality of feeding elements disposed outside the annular duct concentrically with respect to the burner axis are provided for introducing liquid fuel and atomizing agent, the individual feeding elements being implemented intrinsically straight in the burner, inclined to the burner axis in the direction of the burner mouth, and ending at the burner mouth adjacent to the oxidant outlet. By introducing the liquid fuel and atomizing agent in individual completely implemented tubes with a corresponding nozzle, different fuels can be supplied simultaneously via the individual feeds and converted in a flame reaction. | 11-13-2008 |
20080282945 | Pulverized coal combination burner - Disclosed is a burner for oxidant gasification of pulverized fuels under high pressures of e.g. 80 bar (8 MPa) and temperatures of e.g. 1200 to 1900° C. in reactors with liquid slag removal for oxygen gasification, the individual pulverized fuel supply tubes in the burner are designed such that, while retaining the entry cross-sectional area of the tube, the cross-section makes a systematic transition to a curved rectangular duct matched to the annulus. This means that fuel feeding ends immediately adjacent to the oxidant duct, and the flow rate provided in the feeding element is maintained up to the outlet, thereby ensuring trouble-free flow of the pulverized fuel and reducing the amount of inert gas required for purging the feeding element in the non-operational state. | 11-20-2008 |
20090025294 | Simultaneous gasification of coals of widely differing degrees of coalification in entrained flow gasification - The invention relates to a gasification method which, with a reliable and safe mode of operation, allows the simultaneous gasification of coals of different degrees of coalification, including those of differing coal qualities such as brown coals and stone coals, with the pulverized fuel consisting of the mixture of the different coals being fed from a common dispensing system to the gasification reactor. | 01-29-2009 |
20090029299 | Method for the selective safety-related monitoring of entrained-flow gasification reactors - While ensuring technical safety and a short start-up time the invention permits the operation of autothermic partial oxidation of fuels processed into pulverized fuel such as lignite and bituminous coals, petroleum cokes, solid grindable carbon-containing residues, as well as solid-liquid suspensions or slurries, with a gasification agent containing oxygen at operating pressures of up to 8 MPa (80 bar). The selective configuration of the fail-safe monitoring of the gasification process only the supply of the main fuel is cut off. Through the continued operation of the pilot and ignition burner the reactor is kept at operating pressure and after the fault has been rectified fuel gasification can be restarted with the pilot and ignition burner without a complicated placement and pulling of a starter burner and subsequent pressurization of the reactors. | 01-29-2009 |
20090061372 | Combination pulverized fuel burner with integrated pilot burner - The invention comprises a combination burner for the gasification of pulverized fuels with an oxidation means containing free oxygen at ambient or higher pressures, as well as temperatures between 800-1800° C., with the ignition device of the pilot burner with flame monitoring and the pulverized fuel burner being integrated as a combination burner and all operating channels being routed separately from each other up to the mouth of the burner and the media carried by the channels only being mixed at the mouth of the burner. When the pilot burner is dismantled the eddy bodies | 03-05-2009 |
20090077885 | Entrained-flow gasifier with cooling screen and sliding seal - In a reactor for gasification of entrained solid and liquid fuels at temperatures between 1,200 and 1,900° C. and at pressures between ambient pressure and 10 MPa using an oxidizing agent containing free oxygen, the cooling screen is connected to the pressure shell in a gastight manner via a sliding seal in order to allow length changes. Continuous gas purging of the annular gap between pressure shell and cooling screen is unnecessary and gasification gas is prevented from flowing behind. | 03-26-2009 |
20090077886 | Entrained-flow gasifier with cooling screen and bellows compensator - In a reactor for the gasification of solid and liquid fuels in the entrained flow at temperatures between 1200 and 1900° C. and pressures between ambient pressure and 10 MPa with an oxidizing agent containing free oxygen, the cooling screen is connected in a gas-tight manner to the pressure shell via a bellows compensator to accommodate linear deformation. Continuous sweeping by gas of the annular gap between pressure shell and cooling screen is unnecessary and backflow by producer gas is prevented. | 03-26-2009 |
20100126068 | USE OF A MIXTURE OF CARBON DIOXIDE AND NITROGEN AS AN INERTING AND FLOW MEDIUM IN POWDER INJECTION SYSTEMS FOR PULVERIZED COAL GASIFICATION UNDER PRESSURE - A powder injection system for use in pulverized coal gasification under pressure is provided. The powder injection system includes a reservoir for stocking the pulverized coal, a plurality of power injection tubes and a metering unit. A mixture of nitrogen and carbon dioxide is fed to the components that are at operating pressure, namely the powder injection tube and the metering unit, as the inerting and flow medium or fluidizing medium. The nitrogen and carbon dioxide mixture-carrying components are heated in such a manner that the temperature is above the threshold of the diphase range. A method is also provided. The method allows reduction of the nitrogen content in the product gas, which nitrogen is caused by the powder injection system, especially when used in pulverized coal gasification under pressure to produce a synthesis gas for the production of different hydrocarbons. | 05-27-2010 |
20100147413 | USE OF PURE CARBON DIOXIDE AS AN INERTING AND FLOW MEDIUM IN POWDER INJECTION SYSTEMS FOR USE IN PULVERIZED COAL GASIFICATION UNDER PRESSURE - A particulate feed arrangement used in pulverized coal gasification under pressure is provided. The arrangement includes a reservoir for stocking the pulverized coal, a plurality of powder injection tubes, and a metering unit. Pure carbon dioxide is fed to the components that are at operating pressure, namely the power injection tube and the metering unit, as the inerting and flow medium or fluidizing medium. The carbon dioxide-carrying components are heated in such a manner that the temperature is above the threshold of the diphase range. A method is also provided. The method allows elimination of any nitrogen in the product gas, which nitrogen is caused by the powder injection system, especially when used in pulverized coal gasification under pressure to produce a synthesis gas for the production of different hydrocarbons. | 06-17-2010 |
20100300112 | METHOD FOR PRODUCING MOTOR ENERGY FROM FOSSIL FUELS WHILE DISSIPATING PURE CARBON DIOXIDE - A method for producing electric energy from solid and liquid fuels is provided. The fuels are first subjected to a gasification process at high pressure, and the scrubbed gasification gas is fed to a gas and steam turbine process. The combustion of the scrubbed gasification gas in the gas turbine chamber does not occur with air, but with a mixture made of the three components oxygen, carbon dioxide and water vapor. As a result, the waste gas of the gas turbine is made only of carbon dioxide and water vapor. After the condensation thereof, technically pure carbon dioxide remains, which can be dissipated by storage in the deep substrate of the atmosphere. | 12-02-2010 |
20120117878 | Entrained flow gasifier with integrated radiation cooler - An entrained flow gasifier designed as a component for an Integrated Gasification Combined Cycle plant of optimized efficiency is provided. The raw gas initially flows through a waste heat unit designed as a radiation cooler and subsequently flows through a full water quench. This results in a higher ratio of steam in the raw gas, which decreases the medium-pressure steam supply before the water-gas shift and thus improves efficiency in IGCC plants with CO | 05-17-2012 |
20120325128 | Homogenized Feeding of Pulverized fuel with a controllable restriction in the pulverized fuel feed line - An apparatus for constantly supplying pulverized fuel at ambient or increased pressure includes a restrictable pulverized fuel control valve in the pulverized fuel feed line connecting the swirl layer of a dispensing vessel with a pulverized fuel collector is provided. This pulverized fuel control valve effects a compensation for and also attenuation of the pressure fluctuations, as occur in the pulverized fuel feed line, particularly during refill processes of the dispensing vessel. Special embodiments relate to a further homogenization by a fixed throttle facility and also auxiliary gas feeds into the pulverized fuel feed line. | 12-27-2012 |
20120325129 | EQUALIZED INJECTION OF PULVERIZED FUELS WITH FIXED RESTRICTION POINT IN THE PULVERIZED FUEL CONVEYOR LINE - An apparatus for constant feeding of pulverized fuels at ambient or elevated pressure having a fixed restrictor device in the pulverized fuel conveyor line connecting a metering vessel to a pulverized fuel consumer is provided. The restrictor device effects a compensation and also attenuation of pressure fluctuations such as occur in the pulverized fuel conveyor line, in particular during operations to replenish the metering vessel. Special embodiments relate to a further equalization by means of injections of auxiliary gas into the pulverized fuel conveyor line. | 12-27-2012 |
20130168333 | CIRCULATION OF PROCESS WATERS IN ENTRAINED-BED GASIFICATION UNDER PROCESS PRESSURE WITH A PRESSURE FILTRATION UNIT - An apparatus and a method for circulating process waters from plants of dust-pressure or entrained-flow gasification of solid and liquid fuels are provided, wherein process waters are separated from solids or reduced in their solids content by a pressure filtration unit under process pressure and returned to consumer loads, such as raw gas quenching processes and scrubbing processes. | 07-04-2013 |
20140076211 | GASIFYING BURNER WITH INERT GAS CURTAIN BETWEEN PILOT BURNER AND POWDER BURNER - A burner is provided for gasifying powdered fuel with a free oxygen-containing oxidant at temperatures up to 1900° C. and pressures up to 10 MPa. The burner includes a powder burner part having an oxidant channel and a powdered fuel channel, and a central pilot burner part. An annular channel for the outflow of an inert medium is arranged at the burner mouth between the pilot burner part and the powder burner part. | 03-20-2014 |
20140090583 | COMBINATION OF PRESSURE CHARGING AND METERING FOR CONTINUOUSLY SUPPLYING PULVERIZED FUEL INTO AN ENTRAINED-FLOW GASIFYING REACTOR WITH LONG CONVEYING DISTANCES - A system for fluidizing and conveying a powdery product is provided. The system includes plurality of powder-locking and metering vessels, the vessels each having a conveying line for the powdery product and a control mechanism for the mass flow of the powdery product. The conveying lines are brought together to form a common conveying line and are supplied to a remover of the powdery product. The powder-locking and metering vessels are alternatively fed with the powdery product and tensioned with the fluidizing gas under operating pressure. The control mechanisms of the powder-locking and metering vessels are activated in such a manner that the mass flow sum of powdery product in the conveying lines is identical to the desired value for the mass flow of powdery product to the remover of the powdery product. | 04-03-2014 |
20140345466 | QUENCHING SYSTEM FOR COOLING AND CLEANING DUST-CONDUCTING CRUDE GASIFICATION GAS - Separation of dust in a quenching device arranged downstream of an entrained-flow gasification system is increased by a baffle with a double deflection system for deflecting the crude gas at approximately 180° angle. An additional spraying element is provided. The arrangement can be single-sided or double-sided, or can include an additional weir. | 11-27-2014 |
20150033627 | DUST SEPARATION FROM THE CRUDE GAS OF AN ENTRAINED FLOW GASIFIER - A multistage gas washing system is applied for dust separation from crude gases of entrained flow gasification of pulverized fuels under pressures up to 10 MPa and temperatures which are greater than the melting point of the fuel ash. A first stage comprises a modified quenching system and a downstream washing column, which operates as a bubble column. A second washing stage comprises one or more Venturi washers connected in series. A third washing stage comprises multiple high-pressure atomization units of washing water, a partial condenser for cooling the crude gas by 1 to 15° C. with condensate formation, and a separation column, which is equipped with washing surfaces and a plastic-coated demister. | 02-05-2015 |
20150041717 | TREATMENT OF CRUDE SYNTHESIS GAS - A process for treating steam-saturated crude gases from an entrained flow gasification of fuels before entry into heat exchangers sited upstream of a crude gas converting operation. To avoid solid deposits in an entrance region of the heat exchangers, the crude gas is converted from a saturated into a superheated state by supply of a hot gas to the crude gas. Hot gas contemplated is superheated high pressure steam or recycled superheated converted crude gas. | 02-12-2015 |
20150045457 | DEVICE FOR THE TREATMENT OF CRUDE SYNTHESIS GAS - A device for treating steam-saturated crude gases from the entrained flow gasification of fuels before entry into heat exchanges sited upstream of a crude gas converting operation. To avoid solid deposits in an entrance region of the heat exchangers, a crude gas is converted from a saturated into the superheated state by supply of hot gas. Hot gas contemplated is superheated high pressure steam or recycled superheated converted crude gas. | 02-12-2015 |
20150059246 | COMBINED QUENCHING AND SCRUBBING SYSTEM WITH GUIDE TUBE FOR AN ENTRAINED FLOW GASIFYING REACTOR - A three-stage quenching and scrubbing system for treatment of hot crude gases and liquid slag after an entrained flow gasification. In the first primary stage, cooling and scrubbing water is injected such that slag can no longer adhere to the wall of the central tube and the conversion reaction of the carbon monoxide with water vapor to give hydrogen can proceed to close to the equilibrium. A secondary quenching and scrubbing stage takes the form of a bubble column, and further cooling and the deposition of coarse dust and slag are effected in a water bath. The rest of the treatment is through intensive spraying in a tertiary quenching and scrubbing the gas stage, nozzle rings for deposition of fine slag and partly of fine dust. All three quenching and scrubbing stages enable cooling of the crude gas down to the water vapor dew point determined by the plant pressure. | 03-05-2015 |
20150075072 | DIVIDED CENTRAL TUBE OF A COMBINED QUENCHING AND SCRUBBING SYSTEM FOR AN ENTRAINED FLOW GASIFICATION REACTOR - Devices for a three-stage scrubbing system for treatment of hot crude gases and liquid slag by an entrained flow gasification. Crude gas and slag are conducted downward into a water bath in a central tube. The upper part of the central tube consists of a double-threaded tube screen welded in a gas-tight manner, in which water is injected directly as the first scrubbing and cooling stage in the interior thereof. In the water bath, a bubble column is formed, which simultaneously constitutes the second scrubbing and cooling stage. Surface bodies arranged in three layers increase the scrubbing effect. After leaving the bubble column, the crude gas is again sprayed with water in a cavity, wherein one or more nozzle rings are disposed. This forms the third scrubbing stage. The crude gas then leaves the quenching and scrubbing apparatus in steam-saturated form at 200-220° C. and is sent to further treatment. | 03-19-2015 |