Abstract:
Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker.
Abstract:
In one aspect, the invention is directed to a method for determining the concentration of anionic polymers or oligomers in industrial water comprising combining a buffer solution and a cationic dye solution, measuring absorbance of the buffer-dye admixture at selected wavelength(s) and determining the polymer or oligomer concentration from the previously determined absorbance values. In alternate embodiments of the invention, the buffer solution may be a multifunctional buffer solution and may be comprised of multiple buffers, masking agents. and/or stabilizing agents and combinations thereof. Other embodiments provide that multiple dyes may be employed.
Abstract:
A method for the reduction of mercury emissions from an industrial plant that utilizes a cement or minerals kiln that has a high level of mercury emissions during specific operating conditions. The invention reduces a large spike in mercury emissions typically seen in cement kiln systems when the in-line raw mill is shut-down and all preheater gases are vented to the stack directly. The invention diverts the preheater gases to a cooling device that functions as an adsorption reactor to provide mercury absorption during periods when the raw mill is not in operation.
Abstract:
A device for converting biomass with a water content of at least 50% to gaseous products includes a reactor filled at least partially with a packing including at least one filler body for accommodating supercritical water and a hydrothermal molten salt. A heater is arranged to heat up the reactor and its content. A first feeding pipe is coupled to the reactor to feed water and salt solution into the reactor. A second feeding pipe is coupled to the reactor to feed to biomass into the reactor. A discharge pipe is coupled to the reactor to discharge gaseous products from the reactor. An outlet is proved in the bottom of the reactor for removing portions of the molten salt.
Abstract:
Methods for pretreating and improving coking coal quality for producing blast-furnace coke by: (a) rapid-heating the coal charge in a fluidized-bed to a temperature range between not lower than 300° C. and not higher than the temperature at which the coal charge begins to soften, at a rate of 30 to 103 ° C./min., (b) classifying the rapid-heated coal charge to fine- and coarse-size coal, and then (c-1) briquetting the fine-size coal or (c-2) rapid-heating the fine- and coarse-size coal individually in a pneumatic preheater to a temperature range between not lower than 300° C. and not higher than the temperature at which the coal charge begins to soften, at a rate of 103 to 105 ° C./min., and (d) forming the fine-size coal.
Abstract:
A low energy method of pyrolysis of rubber or other hydrocarbon material is provided. The hydrocarbon material is heated while maintaining a vacuum, using a clay catalyst. In an additional embodiment, also under a vacuum and optionally with or without the catalyst, the temperature of the reaction chamber and corresponding fuel input is varied either over time or spatially within the reaction chamber, to take advantage of the exothermic properties of the reaction. With the method of the present invention, an improved solid reaction product can be achieved.
Abstract:
The invention relates to a continuous process for producing synthetic crude oil from oil bearing material, e.g., oil shale or tar sand, through continuous feeding and calcining, hydrocracking and hydrogenating kerogen or bitumen.
Abstract:
Method for the gas sealing manufacture of a door frame of a coke oven battery which battery comprises a refractory structure with an armor plate connected to it onto which the door frame is fitted characterized by the following steps: measuring the profile of the surface of the armor plate at the position where it faces the door frame in its mounted state; fitting a profile to one side of the door frame which in its mounted state faces the armor plate, corresponding to the profile of the surface of that armor plate measured in the previous step, in such a way that in its mounted state the door frame rests essentially against the armor plate; placing the door frame thus adapted against the armor plate.
Abstract:
In addition to ash and coke, the gasification residue contains alkaline earth metal sulfide and alkaline earth metal oxide because desulfuring agents have been supplied to the gasifier. At temperatures from 5.degree. to 80.degree. C. the gasification residue is mixed with an acid-containing aqueous solution so that a gas which is rich in H.sub.2 S is produced. Ash, coke, and alkaline earth metal salt are supplied to a flotation zone, in which coke is separated. A solid residue which contains ash and alkaline earth metal salt is withdrawn from the flotation zone. Carbonic acid or dilute sulfuric acid is preferably used as an acid.
Abstract:
A method for operating a battery of coke ovens capable of accomplishing an increase in production and a decrease in the quantity of heat required for carbonization. The battery of cove ovens include a plurality of carbonization chambers to which a series of working numbers indicating the order of unit oven workings are assigned. An operation step is repeatedly practiced which includes a working step of carrying out the unit oven workings in the order of working numbers with respect to the carbonization chambers without providing a working interrupting time between the unit oven workings and an interruption step of interrupting the unit oven working until the the carbonization chamber of the coke oven which has been first subject to the unit oven working reaches a time at which discharge from the carbonization chamber is made possible.