Abstract:
Un procede de melange en continu du charbon avec un liquide non miscible a l'eau produit une boue pompable, uniforme. Du charbon d'alimentation brut, pulverise, et de preference un liquide derive du charbon, non miscible a l'eau sont amenes en continu vers une zone de melange (12 et 18) dans laquelle les particules de charbon et le liquide sont melanges intimement et avancent sous forme d'ecoulement tampon pour former une premiere boue. La premiere boue est extraite de la zone de melange (12 et 18) puis amenee vers une zone de melange (24) ou elle est melangee avec une boue chaude pour former la boue pompable. Une partie de la boue pompable est recyclee en continu vers la zone de melange (12 et 18) pour la melanger au charbon d'alimentation.
Abstract:
This document relates to a fuel oil composition comprising:(i) a solid hydrocarbonaceousand/or solid carbonaceous material, wherein the material is in particulate form, and wherein at least about 90% by volume (%v) of the particles are no greater than about 20 microns in diameter; and(ii) a liquid fuel oil; wherein the solid hydrocarbonaceous and/or solid carbonaceous material is present in an amount of at most about 30 by mass (%m) based on the total mass of the fuel oil composition. The invention further relates a process for the preparation of this fuel oil composition, a method of changing a grade of a liquid fuel oil, and a method for adjusting the flash point of a liquid fuel oil.
Abstract:
Coal particle compositions are provided. The coal particle compositions, in some cases, are characterized by having an extremely small average particle size (e.g., 1.0 micron or less) and a high average surface area (e.g., greater than 3 m 2 /g). The small particle size and high surface area can lead to significant property advantages including more efficient combustion, more effective fractional distillation, and enhanced pollution separation, amongst others. The coal particle compositions may be produced in a milling process that uses preferred grinding media (e.g., high density grinding media) to reduce feed coal particles to a desired final particle size. The coal particle compositions may be used in a variety of different applications including fuel and non-fuel uses.
Abstract translation:提供了煤颗粒组合物。 在一些情况下,煤颗粒组合物的特征在于具有极小的平均粒度(例如,1.0微米或更小)和高的平均表面积(例如大于3m 2 / g / g )。 小颗粒尺寸和高表面积可导致显着的性能优势,包括更有效的燃烧,更有效的分馏和增强的污染分离等等。 煤颗粒组合物可以在使用优选研磨介质(例如高密度研磨介质)的研磨工艺中将原料煤颗粒减少至所需的最终颗粒尺寸。 煤颗粒组合物可用于各种不同的应用,包括燃料和非燃料用途。
Abstract:
The invention is a process for producing a mixture of wax and crude oil which can be pumped at ambient temperature. The wax is preferably a Fisher-Tropsch wax. The temperature of the crude oil is controlled to a level below the dissolution temperature of the wax. The wax crystals are homogenized and dispersed into the crude oil to form a mixture. The present invention prevents the wax from dissolving in the crude oil and subsequently re-crystallizing at lower temperatures which can substantially increase the viscosity of the mixture thereby decreasing the effectiveness of transporting the mixture.
Abstract:
A process for removing even tightly emulsified oil, water and solid emulsions by the application of a shear force sufficient to break the emulsion. In one particular application, a tank bottom sludge produced in the petroleum industry is treated with the shear force of a ball or roller mill until the emulsion is broken. Simultaneous reduction in the particle size of the solid occurs. This process produces commercial grade oil, water and an aqueous slurry of solids devoid of oily compounds. The oil-free solid phase produced thereby is suited for use in a coker quench stream. The demulsification process described may be used to demulsify used oil to recover and recycle the oil constituent of the used oil. The demulsification process of the present invention may be used to demulsify waste products for the later production of a liquid fuel from the oil of the waste product.
Abstract:
A novel grinding mixture useful for preparing a solid-liquid slurry. This grinding mixture contains from 60 to 82 volume percent of carbonaceous material (such as coal and/or coke), from 18 to 40 volume percent of carrier liquid (such as water and/or oil), and from 0.01 to 4.0 weight percent of dispersing agent. The grinding mixture has a pH of from 7 to 12. There are at least two consists in the grinding mixture. From about 2 to about 50 weight percent of the particles in the grinding mixture have a median particle size of from 0.50 to 40 microns, and from about 50 to about 98 weight percent of the particles in the grinding mixture have a particle size in excess of 40 microns. There is also provided a process for preparing a liquid-solid slurry wherein the grinding mixture is ground until a slurry is produced whose particle size distribution is in accordance with a specified "CPFT" formula.
Abstract:
Coal char (20) is produced by the pyrolytic destructive thermal distillation of coal in the absence of oxygen in distillation means (18). The char (20) so produced is ground in grinding means (22) to provide a ground char (24). The ground char (24) is beneficiated in beneficiation means (26), and is then sized in sizing means (30) to produce a char mix (32). The char mix (32) is then admixed in suitable portions with a liquid organic fraction to form a combustible, liquid-solid mixture which is a stable, transportable, fuel composition. Preferably, the liquid organic fraction is obtained from the low boiling fractions derived from the pyrolysis of coal.