Chemically disinfected sewage sludge-containing materials
    1.
    发明授权
    Chemically disinfected sewage sludge-containing materials 失效
    化学消毒含污泥的材料

    公开(公告)号:US5423992A

    公开(公告)日:1995-06-13

    申请号:US702580

    申请日:1991-05-20

    CPC classification number: C02F11/004

    Abstract: A chemically disinfected sewage sludge-containing material comprising (1) an aqueous slurry of sewage sludge-containing material having a solids content in the range of about 10 to 30 wt. %; and (2) a chemical disinfectant comprising a water soluble silicate of sodium in the amount of 5 to 20 wt. % (basis dry wt. of said sewage sludge). In one embodiment, a pumpable chemically disinfected sewage sludge-containing material was produced by the steps of (1) dewatering sewage sludge to produce an aqueous slurry having a solids content of about 10 to 30 wt. %; (2) shearing the dewatered sewage sludge from (1) at a temperature in the range of about ambient to 230.degree. F. and at a shear rate of at least 30 per second for a period in the range of about 0.5 to 180 minutes; and (3) mixing the following materials together at a temperature in the range of about ambient to 230.degree. F. to produce a pumpable aqueous slurry having a solids content in the range of about 30 to 65 wt. % and a pH of at least about 11: (a) about 0.5 to 7 parts by wt. of sheared dewatered sewage sludge from (2); (b) about 5 to 20 wt. % of a silicate of sodium (basis total dry weight of sewage sludge); and (c) about 5 to 7 parts by wt. of at least one material from the group consisting of sewage sludge-containing material, liquid hydrocarbonaceous fuel, solid carbonaceous fuel-containing material, and mixtures thereof.

    Abstract translation: 一种经化学消毒的含污泥的材料,包括(1)含有固体含量为约10至30重量%的含污泥的材料的含水浆料。 %; 和(2)一种化学消毒剂,其包含5至20重量%的钠的水溶性硅酸盐。 %(所述污泥的基础干重)。 在一个实施方案中,通过以下步骤制备可泵送化学消毒的含污泥的材料:(1)将污水污泥脱水以产生固体含量为约10至30重量%的含水浆料。 %; (2)在大约环境温度至230°F的温度和至少30秒/秒的剪切速率下在约0.5至180分钟的范围内剪切来自(1)的脱水污水污泥; 和(3)在约环境温度至230°F的温度范围内将以下材料混合在一起,以产生固体含量在约30至65重量%范围内的可泵送含水浆料。 %和至少约11的pH:(a)约0.5至7重量份。 (2)剪切脱水污泥; (b)约5至20wt。 钠的硅酸盐的百分比(污水污泥的基础总干重); 和(c)约5〜7重量份。 的至少一种材料,其由来自含污泥的材料,液体含烃燃料,含固体含碳燃料的材料及其混合物组成。

    Heteropolysaccharide preparation and use thereof as a mobility control
agent in enhanced oil recovery
    2.
    发明授权
    Heteropolysaccharide preparation and use thereof as a mobility control agent in enhanced oil recovery 失效
    杂多糖制备及其作为增强油采收中的迁移控制剂的用途

    公开(公告)号:US5236046A

    公开(公告)日:1993-08-17

    申请号:US642937

    申请日:1991-01-18

    CPC classification number: C09K8/905

    Abstract: A variant strain of Agrobacter radiobacter has been found to produce a unique heteropolysaccharide containing D-galactose, D-glucose and pyruvic acid in approximate molar ratios of 2:15:2 in a seventeen member repeat unit having the structure shown below, wherein Glc represents D-glucose, Gal represents D-galactose and Pyr represents pyruvic acid, with the numerals indicating the positions of linkage in these ring structures. The heteropolysaccharide is useful in mobility control in oil reservoir formations, especially when crosslinked with trivalent metal cations (Cr.sup.3+, Al.sup.3+, Fe.sup.3+ or Ti.sup.3+) to form a gel which preferentially fills high permeability zones in such reservoirs. ##STR1##

    Abstract translation: 已经发现,具有下列结构的第十七个重复单元中,具有大约摩尔比为2:15:2的含有D-半乳糖,D-葡萄糖和丙酮酸的独特杂多糖类,其中Glc代表 D-葡萄糖,Gal表示D-半乳糖,Pyr表示丙酮酸,数字表示这些环结构中的连接位置。 杂多糖可用于储油层形成中的迁移率控制,特别是当与三价金属阳离子(Cr3 +,Al3 +,Fe3 +或Ti3 +)交联以形成优先填充这些储层中的高渗透性区域的凝胶时。

    Lactic acid process
    3.
    发明授权
    Lactic acid process 失效
    乳酸工艺

    公开(公告)号:US4749652A

    公开(公告)日:1988-06-07

    申请号:US766479

    申请日:1985-08-19

    Inventor: Peter D. Robison

    CPC classification number: C12R1/225 C12P7/56 Y10S435/853

    Abstract: A variant strain of the organism Lactobacillus delbrueckii, accession number ATCC 53197, is provided as well as an improved process for the preparation of lactic acid by the fermentation of carbohydrates using the method strain of Lactobacillus delbrueckii.

    Abstract translation: 提供了生物体德氏酵母菌的变体菌株,登录号为ATCC 53197,并且通过使用德氏乳杆菌的方法菌株发酵碳水化合物来制备乳酸的改进方法。

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