115results about "Horizontal chamber coke ovens" patented technology

A system and process to provide integrated control for the pyrolytic composition of organic (biomass) waste products especially for municipal solid waste systems. The system includes integrated control that monitors biomass waste stream throughout the entire system and the products produced therefrom and includes presorting, controlling the amount of material processed in a continuous manner, shredding, removing moisture in a continuous process that is controlled and providing the waste stream to the distillation unit for pyrolytic action where it is converted into gaseous fuel and a char residue. The gaseous fuel is scrubbed clean and monitored and stored and reused to provide heat to the system. The entire system may be self-sustaining and continuous with very little or no human intervention. An integrated real time computer control system includes sensors and measuring devices with all the major components to ensure integrated efficiency.

An improved non-recovery coke oven floor constructed of a single layer of refractory bricks including, for each oven sole flue, a pair of trunnion bricks and a center bridge brick spanning the width of the flue, having lower brick surfaces in the form of an arch, and joined end-to-end by a tapered tongue-and-groove joint disposed approximately perpendicular to the direction of a compression load transmitted by the center bridge brick to the trunnion bricks.

An improved corbel includes a first tier having first blocks and a second tier having second blocks. Each of the first blocks includes a first aperture extending through the block from a first surface to a back surface and a second aperture formed through a top surface of the block, extending into the first aperture. The first blocks are arranged on a substantially planar surface to align the respective first apertures to define a first passageway. Each of the second blocks includes a third aperture extending through the second block from a top surface to a bottom surface. The second blocks are disposed above the first tier to align the third aperture of each of the second blocks with the second aperture of the first blocks to form a second passageway.

The invention provide a method and apparatus for decreasing gas flow rates in a sole flue gas system for a coke oven during at least an initial coking operation after charging a coking oven with coal (43). The method includes providing a duct system (96, 98) between a first coke oven having a first coking chamber (18) and a second coke oven having a second coking chamber (18) to direct at least a portion of gas from a gas space (41) in first coking chamber (18) to the second coke oven thereby reducing a gas flow rate in the first sole flue gas system of the first coke oven. Reduction in sole flue gas flow rates has a beneficial effect on product throughput, the life of the coke oven and environmental control of volatile emissions from coke ovens.

The present invention provides an autothermal torrefaction device, which can be either stationary of mobile. Embodiments of the present invention include a torrefaction chamber having a chamber inlet for receiving biomass and at least one chamber outlet. The torrefaction chamber can be substantially surrounded by an exterior housing defining an outer jacket and having a jacket inlet and a jacket outlet. The outer jacket and torrefaction chamber define a space therebetween such that a burner unit including an inlet operatively connected to the chamber outlet and an outlet operatively connected to the jacket inlet allows vapors produced or released from within the torrefaction chamber to travel into the burner unit for combustion of at least a portion of the vapors and subsequently travel through the space between the jacket and the torrefaction chamber to provide heat necessary for autothermal torrefaction of biomass.

A coke oven includes an oven chamber, an uptake duct in fluid communication with the oven chamber, the uptake duct being configured to receive exhaust gases from the oven chamber, an uptake damper in fluid communication with the uptake duct, the uptake damper being positioned at any one of multiple positions, the uptake damper configured to control an oven draft, an actuator configured to alter the position of the uptake damper between the positions in response to a position instruction, a sensor configured to detect an operating condition of the coke oven, wherein the sensor includes one of a draft sensor, a temperature sensor configured to detect an uptake duct temperature or a sole flue temperature, and an oxygen sensor, and a controller being configured to provide the position instruction to the actuator in response to the operating condition detected by the sensor.

A device for feeding and controlling secondary air from secondary air ducts into flue gas channels of horizontal coke oven chambers is shown. The flue gas channels are located underneath the coke oven chamber floor on which coal carbonization is realized. The flue gas channels serve for combustion of partly burnt coking gases from the coke oven chamber. The partly burnt gases are burnt with secondary air, thus heating the coke cake also from below to ensure even coal carbonization. Secondary air comes from the secondary air ducts connected to atmospheric air and to the flue gas channels. Controlling elements are mounted in the connecting channels between the flue gas channels and secondary air ducts which can precisely control the air flow into the flue gas channels. Thereby, it is possible to achieve a much more regular heating and heat distribution in coke oven chambers. The actual controlling devices in the connecting channels can be formed by turnable pipe sections, wall bricks, or metal flaps. It is particularly advantageous to utilize a hump-like facility (tabouret) which sits in the secondary air ducts and which is comprised of a tabouret plate with a central opening that is slid under the corresponding embranchment to regulate the gas stream. The controlling mechanism can be actuated manually, electrically, or pneumatically. Thereby, the controlling device can also be automated.

A coke plant includes multiple coke ovens where each coke oven is adapted to produce exhaust gases, a common tunnel fluidly connected to the plurality of coke ovens and configured to receive the exhaust gases from each of the coke ovens, multiple standard heat recovery steam generators fluidly connected to the common tunnel where the ratio of coke ovens to standard heat recovery steam generators is at least 20:1, and a redundant heat recovery steam generator fluidly connected to the common tunnel where any one of the plurality of standard heat recovery steam generators and the redundant heat recovery steam generator is adapted to receive the exhaust gases from the plurality of ovens and extract heat from the exhaust gases and where the standard heat recovery steam generators and the redundant heat recovery steam generator are all connected in parallel with each other.

There is described a system and method for recycling carbon-containing material, in particular tyres and plastics materials. The system includes a heating arrangement for anaerobically heating carbon containing material to produce carbon-containing gases. A condensing arrangement is also used to condense a proportion of the carbon-containing gases to provide condensed gases and non-condensed gases. In addition, a recirculating arrangement is provided for recirculating the non-condensed gases into the heating arrangement. Further systems and methods for pre- and post-processing of the carbon-containing material are also disclosed and products of the systems and methods are also described.

A process for keeping coke oven chambers hot during the stoppage of a waste heat boiler. The coke oven chambers are kept hot after emptying using externally heated burners, in which a flue gas low in pollutants is obtained from the burners. The waste heat boilers which, during normal operation, cool the flue gases can be shut off and overhauled, and a flue gas low in pollutants which can be dissipated directly into the atmosphere is obtained by the burner operation. Also disclosed is an apparatus for keeping coke oven chambers hot, the apparatus has a coke oven chamber bench, a flue gas collection line, a flue gas chimney, a waste heat boiler, a waste gas collection line and a waste gas purification system, wherein the flue gas chimney and the waste heat boiler can be shut off on the flue gas side and on the waste gas side.

A device for proportioning of secondary combustion air into the secondary air soles of coke oven chamber ovens is shown. The device is formed by a slide gate or a parallelepiped device or by plates moved by means of a thrust bar, the thrust bar being moved longitudinally in parallel to the coke oven chamber wall so that the plates move away from the secondary air apertures and open or close these. The thrust bar is moved by means of a positioning motor, with the power transmission being effected hydraulically or pneumatically. Via suitable measuring parameters, it is thus possible to optimize secondary heating so that heating is provided evenly from all sides, thus achieving an improvement in coke quality.

A coke oven includes an oven chamber, an uptake duct in fluid communication with the oven chamber, the uptake duct being configured to receive exhaust gases from the oven chamber, an uptake damper in fluid communication with the uptake duct, the uptake damper being positioned at any one of multiple positions, the uptake damper configured to control an oven draft, an actuator configured to alter the position of the uptake damper between the positions in response to a position instruction, a sensor configured to detect an operating condition of the coke oven, wherein the sensor includes one of a draft sensor, a temperature sensor configured to detect an uptake duct temperature or a sole flue temperature, and an oxygen sensor, and a controller being configured to provide the position instruction to the actuator in response to the operating condition detected by the sensor.

A coke plant includes multiple coke ovens where each coke oven is adapted to produce exhaust gases, a common tunnel fluidly connected to the plurality of coke ovens and configured to receive the exhaust gases from each of the coke ovens, multiple standard heat recovery steam generators fluidly connected to the common tunnel where the ratio of coke ovens to standard heat recovery steam generators is at least 20:1, and a redundant heat recovery steam generator fluidly connected to the common tunnel where any one of the plurality of standard heat recovery steam generators and the redundant heat recovery steam generator is adapted to receive the exhaust gases from the plurality of ovens and extract heat from the exhaust gases and where the standard heat recovery steam generators and the redundant heat recovery steam generator are all connected in parallel with each other.

A device for introduction of primary combustion air into the primary heating space of a coke oven chamber admits primary air through ports in the top of a oven chamber or in the oven chamber walls above the door or in the chamber door or in several or all of the mentioned positions These ports have inserts that are equipped with spouts, with the spouts having an opening through which primary air is conducted at a chamfered angle onto the coke cake. The primary air from the opening ports in the coke oven chamber top streams to the coke oven at an angle of less than 90° and primary air from the opening ports in the chamber wall above the door or in the door streams to the coke oven at an angle of greater than 0°. Also shown is a method for use with the described device.

Autothermal torrefaction devices, which can be either stationary of mobile, are provided and include a torrefaction chamber having a chamber inlet for receiving biomass and at least one chamber outlet. The torrefaction chamber can be substantially surrounded by an exterior housing defining an outer jacket and having a jacket inlet and a jacket outlet. The outer jacket and torrefaction chamber define a space therebetween such that a burner unit including an inlet operatively connected to the chamber outlet and an outlet operatively connected to the jacket inlet allows vapors produced or released from within the torrefaction chamber to travel into the burner unit for combustion of at least a portion of the vapors and subsequently travel through the space between the jacket and the torrefaction chamber to provide heat necessary for autothermal torrefaction of biomass.

Apparatus and method in converting municipal solid waste into geo-polymer briquettes and geo-polymer bricks comprising bag opener cum crushers, magnetic separators for ferrous and-eddy current separators for non-ferrous things; squeezer for removing liquid content; inter particle collision driers for drying; pulverizer for pulverizing, and devolatizing carbonization reactor for carbonisation of combustible MSW to produce solid char with low water content. Solid char is mixed with geo-polymer binding agent / starch / tar / to form combustible pellet / briquette. These highly combustible briquette / pellets have high calorific value. The pellet / briquette is formed by rotating combustible char at high rpm and compaction. Pellet has a water content of less than 5% by weight and fuel value of 5500 to 6500 KCAL. This process produces non-combustible geo-polymer brick. The non-combustible MSW separated by a trommel is crushed by inter particle collision crusher and pan mixers mixing with geo-polymer binding agent / fly ash / quarry dust / chips or china clay and moulded.

Useful byproducts are recovered through the pyrolytic processing of biomass material such as vegetation, paper, or worn tires. The process is conducted in a sealed enclosure under vacuum or other controlled atmosphere. The biomass material is ablated and burned by crunching between counter-rotating rollers whose inner walls have been exposed to a highly heated fluid. The biomass material is preheated by injecting into the feeding duct super-heated: dry steam. A condenser within the enclosure reduces resulting vapors into oils that can be drained from the enclosure pan. Solid combustion residue is abstracted from the enclosure by an Archimedes screw.

Provided herein is a method, device and installation for devolatizing a solid feedstock, comprising carbon-based waste selected from the group consisting of hazardous material, biomass, animal manure, tires, municipal solid waste and refuse derived fuel. The method comprises treating the solid feedstock to a produce a particle size laying between about 1 cm3 and about 100 cm3. The solid feedstock is passed into a jacketed system. The solid feedstock is contacted with a heated gas, comprising hydrogen, inside the jacketed system at a temperature of about 500° C. to about 1000° C. for a time of about 60 seconds to about 120 seconds, whereby the solid feedstock is converted into a gas stream and a solid stream.

Method and apparatus for producing synthesis gas comprising the steps of combusting (4) a combustible gas to form hot flue gasses (7), passing the flue gasses (7) through heat storing means (1) so as to heat the heat storing means (1) to an elevated temperature, using the heat thus stored to heat biomass (2) to an elevated temperature so as to form synthesis gas, and withdrawing at least part of the synthesis gas formed, wherein following heating of the heat storing means (1) gaseous medium is circulated through the heat storing means (1), the biomass (2) and back to the heat storing means (1). Furthermore computer program product for performing the method of the invention and the use of the produced biogas are disclosed.

A coke plant includes multiple coke ovens where each coke oven is adapted to produce exhaust gases, a common tunnel fluidly connected to the plurality of coke ovens and configured to receive the exhaust gases from each of the coke ovens, multiple standard heat recovery steam generators fluidly connected to the common tunnel where the ratio of coke ovens to standard heat recovery steam generators is at least 20:1, and a redundant heat recovery steam generator fluidly connected to the common tunnel where any one of the plurality of standard heat recovery steam generators and the redundant heat recovery steam generator is adapted to receive the exhaust gases from the plurality of ovens and extract heat from the exhaust gases and where the standard heat recovery steam generators and the redundant heat recovery steam generator are all connected in parallel with each other.

A method and system for extracting hydrocarbon fuel products from plastic material provides extraction of usable fuel components from waste plastic materials. The materials (or hydrocarbon portion thereof) are liquified and introduced to a chamber where the liquid material is agitated and a negative relative pressure (vacuum) is applied. The liquid is maintained at a substantially constant temperature and the vacuum draws the off-gas hydrocarbon products out for condensation and further processing, while unconverted char is removed to an ash dump. An auger feed unit with agitator buckets is used to propel the char through a feed while agitating the liquid to enhance the rate of gas removal.

A pyrolytic reactor, comprising an inner drum having a circumferential wall formed with a plurality of apertures, an outer drum surrounding the inner drum and defining a clearance therebetween, a feeding device for feeding a plurality of feedstock pieces to the interior of the inner drum, an inlet port through which heat carrier gases flow and are directed to said clearance, for introduction of the heat carrier gases via said plurality of apertures to the inner drum interior and causing pyrolysis of the fed feedstock pieces, a conveyor for transporting a plurality of solid residue pieces produced from a pyrolytic process, and an outlet port through which product vapors and gases, heat depleted heat carrier gases, and the plurality of solid residue pieces are discharged.

The invention relates to a movable slide bed tunnel type coke oven and a use method thereof, and belongs to the field of coal processing and conversion and coking equipment. The coke oven comprises an oven body (48), a front sealing door (7) of the coke oven body, a back sealing door (25) of the coke oven body, a sub-flue (10), a bottom flue (12) and a main flue (6), and is characterized by comprising a coaling preparation chamber (3), a preheating section (50), a carbonization section (51), coke dry quenching section (52) and a coke outlet preparation chamber (23), each part has different structures, and the five parts are connected in series and communicated with each other; and a movable slide bed (37) of loading briquettes or tamping coal materials (44) sequentially pass through the five parts of the coke oven by intermittently moving on a slideway (35) of the slide bed, so that the coal materials are carbonized into coke. The produced coke has uniform specification, large lumpiness, good strength, high heat energy utilization rate, high degree of mechanization, and clean emission of flue gas, and the invention effectively protects atmosphere and water sources and realizes clean production.

There is described a system and method for recycling carbon-containing material, in particular tires and plastics materials. The system includes a heating arrangement for anaerobically heating carbon containing material to produce carbon-containing gases. A condensing arrangement is also used to condense a proportion of the carbon-containing gases to provide condensed gases and non-condensed gases. In addition, a recirculating arrangement is provided for recirculating the non-condensed gases into the heating arrangement. Further systems and methods for pre- and post-processing of the carbon-containing material are also disclosed and products of the systems and methods are also described.

A method and system for extracting hydrocarbon fuel products from plastic material provides extraction of usable fuel components from waste plastic materials. The materials (or hydrocarbon portion thereof) are liquified and introduced to a chamber where the liquid material is agitated and a negative relative pressure (vacuum) is applied. The liquid is maintained at a substantially constant temperature and the vacuum draws the off-gas hydrocarbon products out for condensation and further processing, while unconverted char is removed to an ash dump. An auger feed unit with agitator buckets is used to propel the char through a feed while agitating the liquid to enhance the rate of gas removal.

The present disclosure relates generally to a two-stage biomass pyrolysis processes that maximize pyrolysis vapor yield from a lignocellulosic biomass while being conducive to commercial-scale throughput of biomass. A lignocellulosic feedstock is first pyrolyzed in a reactor first stage comprising at least one auger at a temperature and residence time that produces pyrolysis vapors derived predominantly from cellulose and hemi-cellulose fractions of the feedstock. Partially-pyrolyzed feedstock from the reactor first stage is then pyrolyzed in a reactor second stage at a higher temperature for an additional residence time to produce additional pyrolysis vapors that are predominantly derived from lignin. Certain embodiments arrange multiple reactor first stages around a single reactor second stage.

The invention refers to a tunnel typed coking furnace with a movable sliding bed and the method using the same belonging to the coking field, comprising a furnace body (48), a front sealing door (7), a back sealing door (25), a branch flue (10), a bottom flue (12) and a main flue (6), comprising a first preparation chamber (3) for coaling, a preheating segment (50), a carbonization segment (51), a coke dry quenching segment (52), and a second preparation chamber (23) for coke outlet; each part has different formation from the others, and are interconnected in series with the others; the sliding bed (37) for coaling and tamping coal material (44) passes through the abovementioned five segment in series in order to coke. The invention may realize a production coal material with fixed formation through formation process with pressure, so as to obtain the coke product with the same and big size, in addition to high strength, high utilization rate of heat energy, high degree of mechanization, and it also may realize the clean exhaustion of flue, so as to be able to protect the environment and water resource, and realize clean production.