Method of freeze drying sewage sludge
    1.
    发明授权
    Method of freeze drying sewage sludge 失效
    冷冻干燥污泥的方法

    公开(公告)号:US5614107A

    公开(公告)日:1997-03-25

    申请号:US543037

    申请日:1995-10-13

    摘要: A method for processing sewage eliminates chemical "treatment", or, the addition of chemicals that are as harmful or more so to the environment as raw sewage. The method of processing sewage disintegrates the generally solid components of sewage into a highly de-moisturized powder via alternative processes of either (i) a freeze-drying process, or (ii) a combination centrifugal separation and an evacuated "bake-out" process, both which substantially drive out the vaporizable components of the sewage. In consequence, there are no resultant effluent and/or exhausting vapors from this method which would impact the environment.

    摘要翻译: 处理污水的方法消除了化学“处理”,或者添加与原污水一样有害或更为环境的化学物质。 处理污水的方法通过(i)冷冻干燥过程或(ii)组合离心分离和抽空的“烘烤”过程的替代方法将污水的大体固体组分分解成高度脱保湿的粉末 两者都基本上驱除污水的可汽化组分。 因此,没有这种方法产生的流出物和/或排出的蒸汽将影响环境。

    Freeze-thaw method for reducing mineral content of a clay-water mixture
    3.
    发明授权
    Freeze-thaw method for reducing mineral content of a clay-water mixture 失效
    用于降低粘土 - 水混合物的矿物质含量的冻融方法

    公开(公告)号:US4018682A

    公开(公告)日:1977-04-19

    申请号:US610953

    申请日:1975-09-08

    申请人: Jackson S. Boyer

    发明人: Jackson S. Boyer

    摘要: A method for reducing the clay content of a colloidal clay-water mixture which comprises combining the mixture with air at superatmospheric pressure and thereafter expelling the mixture in the form of small droplets at atmospheric pressure at a temperature below 32.degree. F. to form synthetic snow. Thereafter synthetic snow can be melted to recover water containing reduced mineral content. The invention is particularly applicable to sludge associated with the hot water extraction method for recovering bitumen from tar sands.

    摘要翻译: 一种降低胶体粘土 - 水混合物的粘土含量的方法,其包括将混合物与空气在超大气压下混合,然后在大气压下在低于32°F的温度下将小液滴形式的混合物排出,形成合成雪 。 此后可以将合成的雪融化回收含有矿物质含量降低的水。 本发明特别适用于与从焦油砂中回收沥青的热水提取方法相关的污泥。

    Process for purification by cryogenic sublimation
    4.
    发明授权
    Process for purification by cryogenic sublimation 失效
    低温升华纯化方法

    公开(公告)号:US3992159A

    公开(公告)日:1976-11-16

    申请号:US589204

    申请日:1975-06-23

    摘要: A process is described for purifying liquids by cryogenic sublimation. This process involves solidifying the liquid by reducing the temperature and pressure to below the triple point. Purification is then carried out by direct transformation from the solid to the vapor phase. Because of increased differentials in vapor pressures at the low temperature at which the procedure is carried out, this purification process is highly efficient and is also particularly suitable for liquids that are susceptible to decomposition with ordinary purification procedures requiring elevated temperatures. The procedure is also advantageous in separating azeotropes, structurally similar compounds, as well as treating flammable, hydroscopic, corrosive and fuming compounds.

    摘要翻译: 描述了通过低温升华纯化液体的方法。 该过程涉及通过将温度和压力降低到三点以下来固化液体。 然后通过从固体到气相的直接转化来进行纯化。 由于在执行该方法的低温下蒸气压差增加,因此该纯化方法是高效的,并且特别适用于易于通过需要升高温度的普通纯化方法分解的液体。 该方法在分离共沸物,结构相似的化合物以及处理易燃,吸湿,腐蚀性和发烟化合物方面也是有利的。