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 m2/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非常小的平均粒度(例如,1.0微米或更小)和高平均表面积(例如,大于3m 2 / g )。 小颗粒尺寸和高表面积可以产生显着的性能优点,包括更有效的燃烧,更有效的分馏和增强的污染分离等。 煤颗粒组合物可以在使用优选的研磨介质(例如,高密度研磨介质)的研磨方法中生产以将进料煤颗粒减少到期望的最终粒度。 煤颗粒组合物可以用于各种不同的应用,包括燃料和非燃料用途。
Abstract:
A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
Abstract:
A free-flowing, hydrophobic starch composition has a near-neutral dry product pH. Methods for making the hydrophobic starch composition by preparing an aqueous mixture comprising a starch, a siliconate, and an acid, where the aqueous mixture has a near-neutral pH, and drying the starch solids to obtain a hydrophobic starch. Novel fuel compositions comprise hydrophobic starch which can be used in internal combustion engines, such as diesel engines. Hydrophobic starch compositions may be used as fuels or fuel components. Novel methods of fueling and operating internal combustion engines use hydrophobic starch as fuel or fuel components.
Abstract:
Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods uses a feed coal tar pitch having a softening point in the range of 70° C. to 160° C. The methods may be carried out using appropriate conventional distillation equipment, a wiped film evaporator, or a thin film evaporator.
Abstract:
A process to produce a flowable fuel or fuel supplement from solid and/or liquid waste, such as industrial waste. A system to carry out the process includes producing from the solid and/or liquid industrial waste a solid char and vaporize liquids, recombining the char and the liquids, recovered from the wastes feed, to form a feed slurry containing solids, combining the feed slurry with additional combustible waste liquids which are added at a rate and amount to obtain a fuel slurry of specified properties, particularly specified viscosity and BTU content, subjecting the feed slurry and additional wastes to conditions of attrition in at least one attrition zone to produce a product slurry containing solids of fuel size, recovering the fuel slurry which be used as fuel in partial oxidation processes. The liquid waste may be collected as a product, particularly if they are high in organic compounds.
Abstract:
A method of making a high softening point coal tar pitch using high efficiency evaporative distillation, as well as the uses and applications of such pitch. According to the method, a feed coal tar pitch having a softening point in the range of 70null C. to 160null C. is fed into a processing vessel wherein the processing vessel is heated to a temperature in the range of 300null C. to 450null C. and wherein a pressure inside the processing vessel is in the range of 5 Torr or less. An output coal tar pitch is withdrawn from the processing vessel. The output coal tar pitch has a softening point in the range of 140null C. to 300null C. and has less than 5% mesophase.
Abstract:
Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods uses a feed coal tar pitch having a softening point in the range of 70null C. to 160null C. The methods may be carried out using appropriate conventional distillation equipment, a wiped film evaporator, or a thin film evaporator.
Abstract:
A fuel composition comprising less than about 10 percent-by-weight water, greater than about 30 percent-by-weight solids and from about 30 to about 70 percent-by-weight of a combustible nonaqueous, generally water insoluble liquid, the composition having a minimum heat value of at least 5000 BTU per pound and a viscosity such that said composition is pumpable at ambient temperature, the composition being conveniently derived, for example, from a waste stream containing a liquid, nonaqueous fraction, a solids fraction and an aqueous fraction, such as refinery waste, waste from aluminum smelting processes, paint waste or other industries.
Abstract:
Volatile, carbonaceous material is refined by hydrodisproportionation to produce a slate of co-products by heating the carbonaceous material in the presence of hydrogen donor rich reducing atmosphere and quenching the reaction vapor produced. The slate of co-products includes a fluidic, combustible non-polluting liquid/solid transportable fuel system derived in substantial part from said hydrodisproportionation.
Abstract:
Coal is gasified to produce carbon monoxide which is converted to carbon by a reverse Boudouard reaction2CO.fwdarw.CO.sub.2 +CThe carbon dioxide is recycled and reacted with coal to create more carbon monoxide by the Boudouard reactionCO.sub.2 +C.fwdarw.2COThe resulting carbon is recovered and mixed with a liquid to form a liquid slurry of particulate carbon which is useful as a liquid fuel. The liquid may be water or hydrocarbonaceous liquids. The process optimizes recovery of carbon from coal in a usable form, substantially free of sulfur, hydrogen, ash and nitrogen.
Abstract translation:煤被气化以产生一氧化碳,其通过反向Boudouard反应转化为碳2CO-> CO2 + C二氧化碳被再循环并与煤反应以通过Boudouard反应产生更多的一氧化碳CO 2 + C 2 CO所得碳 回收并与液体混合以形成用作液体燃料的颗粒状碳的液体浆料。 液体可以是水或含烃液体。 该方法优化了以可用形式从煤中回收碳,基本上不含硫,氢,灰和氮。