Coal derived oxidation product for seedling growth stimulation
    1.
    发明授权
    Coal derived oxidation product for seedling growth stimulation 失效
    煤衍生氧化产物用于幼苗生长刺激

    公开(公告)号:US5302524A

    公开(公告)日:1994-04-12

    申请号:US523077

    申请日:1990-05-14

    CPC分类号: C05F11/00

    摘要: A method of stimulating seedling growth which comprises applying a coal-derived oxidation product to the medium in which the seedling is growing. The product is in the form of a solution or a slurry having a pH in the range of 2 to 12 and has the following elemental and functional group analysis (on an air-dried basis):______________________________________ ELEMENTAL ANALYSIS Element Range (%) ______________________________________ Carbon 30-70 Hydrogen 2-6 Nitrogen 0.1-5 Sulphur 0.1-10 Oxygen 15-45 ______________________________________ FUNCTIONAL GROUP ANALYSIS Functional Group Range (meq/g) ______________________________________ Total acidity 3-13 Carboxylic groups 0.5-12 Phenolic groups 0.5-9 ______________________________________

    摘要翻译: 一种刺激幼苗生长的方法,其包括将煤衍生的氧化产物施用到幼苗生长的培养基中。 该产品为pH为2至12范围内的溶液或浆液形式,并具有以下元素和官能团分析(空气干燥): - 元素分析 - 元素比率(%) - 碳30 -70-氢-2,6-氮-0.1-5-硫-0.1-10-氧-15-45-功能基团分析 - 官能团范围(meq / g) - 总酸度3-13-羧酸基团0.5-12-酚基团0 .5-9 -

    Recovery of humic acids
    4.
    发明授权
    Recovery of humic acids 失效
    回收腐殖酸

    公开(公告)号:US5004831A

    公开(公告)日:1991-04-02

    申请号:US437174

    申请日:1989-11-16

    IPC分类号: C07G99/00

    CPC分类号: C07G17/00 Y02P20/149

    摘要: A method of recovering humic acids from a material such as oxidised coal is provided. This method includes the steps of mixing the material with aqueous alkali, particularly aqueous sodium hydroxide, heating the mixture to a temperature above 100.degree. C. and below 180.degree. C. under sufficient pressure to prevent evaporation of the water, and maintaining the elevated temperature for a time, generally less than 2 hours, sufficient to extract a substantial amount of the available humic acids from the material.

    摘要翻译: 提供了从诸如氧化煤的材料中回收腐殖酸的方法。 该方法包括以下步骤:将材料与碱水溶液,特别是氢氧化钠水溶液混合,在足够的压力下将混合物加热到高于100℃和低于180℃的温度,以防止水的蒸发,并保持高温 通常少于2小时,足以从材料中提取大量可用的腐殖酸。

    Process for the oxidation of fine coal
    8.
    发明授权
    Process for the oxidation of fine coal 失效
    细煤氧化工艺

    公开(公告)号:US4912256A

    公开(公告)日:1990-03-27

    申请号:US216223

    申请日:1988-07-07

    申请人: Izak J. Cronje

    发明人: Izak J. Cronje

    IPC分类号: C10L9/06 C08H99/00 C10L1/32

    CPC分类号: C08H99/00 C05F11/02

    摘要: This invention relates to the production of a solid oxidized coal containing humic acids. Coal with a mean particle size of less than 3 mm is slurried with water and then oxidized with oxygen or mixtures of oxygen and air at temperatures ranging from 100.degree. to 300.degree. C., at partial oxygen pressures ranging from 0,1 to 10 MPa and reaction periods ranging from 5 to 600 minutes. In the absence of catalysts, e.g. alkaline bases, the main product of oxidation is humic acids. These humic acids are not dissolved because the pH of this slurry is in the range 4 to 9. Small amount of fulvic acids are formed and these are soluble in the water of the slurry.The coal-derived humic acids may for example find application as soil conditioners, organic fertilisers, briquette and pellet binders, drilling fluid dispersants and viscosity control agents, while the coal-derived fulvic acids may be utilized for the production of fuel extenders, plasticizers and petrochemicals.