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    • 2. 发明申请
    • IMPROVED METHOD OF REMOVING GANGUE MATERIALS FROM COAL
    • 从煤中去除UE石材料的改进方法
    • WO1980002153A1
    • 1980-10-16
    • PCT/US1979000198
    • 1979-03-30
    • KELLER CORP
    • KELLER CORPKELLER L
    • C10L09/02
    • C10L9/00B03B9/005
    • A method of removing gangue materials from coal characterized by the steps of comminuting and sizing all of the material to have most particles of a size smaller than one hundred microns; slurrying in an alcohol containing 1 to 4 carbon atoms; thereafter separating by settling velocity separation into an overflow stream containing most of the valuable coal products for storage as a fuel or the like and an underflow containing the gangue materials with some larger sized coal particles; thereafter diluting the underflow with alcohol and separating by settling velocity separation or the like into an overflow stream containing the coal for storage and an underflow containing mostly gangue material with some coal particles; separating the alcohol from the gangue materials and returning the alcohol to the process. The gangue materials can be employed as a fuel if they contain enough of the entrained coal particles. Preferably, the comminution to effect mostly particles smaller than 100 microns is effected by a multi-step process including crashing and screening to drying size: drying: and separating into top and bottom streams, the hot latter being sent to a thermal-chemical reactor employing cool alcohol and thermal shock to effect partial comminution; and further comminution to effect the particle sizes less than 100 microns. Also disclosed are specific details of the process to effect a low cost non-polluting carbonaceous fuel feed stock or hydrocarbon fuel extender.
    • 从煤中除去煤ang石材料的方法,其特征在于以下步骤:粉碎和调整所有材料的尺寸,以具有大小小于一百微米的大多数颗粒; 在含有1至4个碳原子的醇中制浆; 然后通过沉降速度分离分离成包含大部分有价值的煤产品的溢流,用于作为燃料等存储,以及含有具有一些较大尺寸煤颗粒的脉石材料的下溢; 然后用醇稀释下溢,并通过沉降速度分离等分离成包含用于储存的煤的溢流,以及主要含有一些煤颗粒的ang石材料的下溢; 将酒精与ang石材料分离并将酒精返回到该过程中。 如果它们含有足够的夹带煤颗粒,则可以将其用作燃料。 优选地,主要影响小于100微米的颗粒的粉碎是通过多步骤方法实现的,所述多步骤方法包括破碎和筛选干燥尺寸:干燥:分离成顶部和底部料流,其中后者被送入热 - 冷酒精和热休克进行部分粉碎; 并进一步粉碎以实现小于100微米的粒度。 还公开了影响低成本无污染碳质燃料原料或烃燃料增量剂的方法的具体细节。
    • 5. 发明申请
    • DEMINERALIZATION OF COAL
    • 煤的脱矿化
    • WO1987005621A1
    • 1987-09-24
    • PCT/AU1987000080
    • 1987-03-23
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ...WAUGH, Allan, BruceBOWLING, Keith, McGregor
    • COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ...
    • C10L09/02
    • C10L9/02
    • A process for demineralizing coal comprising the steps of: forming a slurry of coal particles, preferably at least 50% by weight of which particles have a maximum dimension of at least 0.5mm, with aqueous solutions of an alkali which solution has an alkali content of from 5 to 30% by weight, such that the slurry has an alkali solution to coal ratio on a weight basis of at least 1:1; maintaining the slurry at a temperature of from 150 DEG C to 300 DEG C, preferably 170 DEG C to 230 DEG C, for a period of from 2 to 20 minutes substantially under autogenous hydrothermal pressure and rapidly cooling the slurry to a temperature of less than 100 DEG C; separating the slurry into alkalize coal and a spent alkali leachant solution; regenerating the alkali leachant solution for reuse in step (a) above by the addition of calcium or magnesium oxide or hydroxide thereto to precipitate minerals therefrom; acidifying the alkalize coal by treatment with an aqueous solution of sulphuric or sulphurous acid to yield a slurry having a pH of from 0.5 to 1.5 and a conductivity of from 10,000 to 100,000 us; separating te slurry into acidified coal and a spent acid leachant solution; and washing the acidified coal.
    • 一种用于使煤脱矿的方法,包括以下步骤:用优选至少50重量%的颗粒的最大尺寸至少为0.5mm的煤颗粒形成浆料,该水溶液的碱含量为 5至30重量%,使得浆料的碱溶液与煤的重量比至少为1:1; 基本上在自生水热压力下将浆料保持在150℃至300℃,优选170℃至230℃的温度下2至20分钟的时间,并迅速将浆料冷却至小于 100℃; 将浆料分离成碱煤和废碱浸出剂溶液; 在上述步骤(a)中再生碱浸出剂溶液以通过加入钙或氧化镁或氢氧化物以从其中沉淀出矿物质; 通过用硫酸或亚硫酸的水溶液处理酸化碱化煤,得到pH为0.5至1.5,电导率为10,000至100,000 us的浆料; 将浆料分离成酸化煤和废酸浸出液; 并洗涤酸化的煤。
    • 7. 发明申请
    • METHOD OF UPGRADING LOW CALORIFIC SOLID FUELS BY DEASHING
    • 通过清洗提高低温固体燃料的方法
    • WO1995002656A1
    • 1995-01-26
    • PCT/GR1994000017
    • 1994-07-13
    • BIOKAT CORPORATIONVALKANAS, George, N.
    • BIOKAT CORPORATION
    • C10L09/02
    • C10L9/02
    • Lignite or peat are ground to particle sizes below 50 mesh and then subjected to washing in a detergent solution, where the inert materials and the unbound ash are removed. Following washing, they are treated in an acid bath containing a 15-20 % strong hydrochloric acid solution in a volume ratio of 4-12 times the processed lignite mass. The acid is continuously recycled and fresh make-up acid is added to maintain a constant acid strength. The addition of a known quantity of sulphuric acid ensures that the dissolved ash compounds are converted into sulphates, which, being insoluble in hydrochloric acid, settle and are periodically removed from the tank. Thus demineralisation of the lignite up to an extent of 60-80 % can be achieved with a similar reduction in its moisture and sulphur content. The processed lignite is then centrifuged and up to 80 % of the hydrochloric acid absorbed is recovered. Recovery of the absorbed acid is completed by washing a centrifuge with the use of the minimum quantity of water. Following neutralisation, the washates are processed in a desalination unit, where clean water and molecular chlorine are recovered. Processing of solid fuels, according to this method, achieves the increase of the calorific value of the product stream by 3 to 5 times.
    • 将褐煤或泥炭研磨成小于50目的粒度,然后在去除惰性物质和未结合灰分的洗涤剂溶液中进行洗涤。 洗涤后,将其在含有15-20%强盐酸溶液的酸浴中处理,体积比为加工褐煤质量的4-12倍。 酸连续循环,并加入新鲜的补充酸以保持恒定的酸强度。 加入已知量的硫酸可确保溶解的灰分化合物转化成不溶于盐酸的硫酸盐,沉淀并定期从罐中取出。 因此,通过类似的水分和硫含量的降低,褐煤的去矿化达到60-80%的程度。 然后将经处理的褐煤离心,并回收吸收的盐酸的80%。 通过使用最少量的水洗涤离心机来完成吸收的酸的回收。 中和后,洗涤液在脱盐单元中进行处理,其中回收清洁水和分子氯。 根据该方法,固体燃料的加工可以使产品流的热值增加3〜5倍。