Belt pressure filter
    11.
    发明授权
    Belt pressure filter 失效
    皮带压力过滤器

    公开(公告)号:US4341628A

    公开(公告)日:1982-07-27

    申请号:US228913

    申请日:1981-01-27

    摘要: A belt pressure filter comprises a gravity dewatering zone for dewatering a sludge as a function of the gravity and a forced dewatering zone for a forced dewatering of the sludge by means of external pressure. An endless filter belt travels from the gravity dewatering zone to the forced dewatering zone. The coagulated sludge is supplied onto the filter belt by means of the gravity dewatering zone. Information representing the level of the sludge deposited on the belt is obtained as an information concerning the dewatering ability of the coagulated sludge supplied onto the filter belt. The traveling speed of the filter belt is calculated and controlled on the basis of the above described level information which represents the layer thickness and hence also the solids concentration. The optimum amount of a dosage of a coagulating agent is determined based on the traveling speed of the filter belt as calculated. As a result, the water content in a dewatered cake is maintained low and constant, while an optimal amount of coagulating agent most suited to the sludge characteristics at that time is added to the material without wasting any excess coagulating agent.

    摘要翻译: 带式压力过滤器包括用于使作为重力的函数的污泥脱水的重力脱水区和用于通过外部压力迫使污泥强制脱水的强制脱水区。 循环过滤带从重力脱水区行进到强制脱水区。 凝结污泥通过重力脱水区供给到过滤带上。 获得表示沉积在带上的污泥的水平的信息作为关于供给到过滤带上的凝结污泥的脱水能力的信息。 基于上述表示层厚度的水平信息并因此也计算固体浓度来计算和控制过滤带的行进速度。 基于计算出的过滤带的行进速度来确定凝结剂的最佳用量。 结果,脱水滤饼中的水分含量保持低且恒定,同时将最适合于此时的污泥特性的最佳量的凝结剂加入到材料中,而不浪费任何过量的凝结剂。

    Apparatus for steam drying filter cake
    12.
    发明授权
    Apparatus for steam drying filter cake 失效
    蒸汽干燥机的设备

    公开(公告)号:US3698556A

    公开(公告)日:1972-10-17

    申请号:US3698556D

    申请日:1970-10-30

    申请人: ENVIROTECH CORP

    IPC分类号: B01D33/00 B01D35/18

    摘要: Apparatus is disclosed for steam drying filter cake formed on a drum or disc vacuum filter mounted for rotation in a container the lower portion of which comprises a feed slurry tank and the upper portion comprises a steam hood or steam dome. Means are provided to control the distribution of steam to the dome; to provide releasable seals for the rotary filter; to provide an improved steam hood; to provide exhaust means for the device and to provide an air cooler for the formed and heated filter cake.

    摘要翻译: 公开了用于蒸汽干燥滤饼的装置,该滤饼形成在滚筒或盘式真空过滤器上,该滤筒安装为用于在容器中旋转,其中下部包括进料浆料槽,上部包括蒸汽罩或蒸汽穹顶。 提供装置以控制蒸汽到圆顶的分布; 以提供用于旋转过滤器的可释放密封件; 提供改进的蒸汽罩; 为装置提供排气装置,并为形成和加热的滤饼提供空气冷却器。

    Dewatering device
    15.
    发明授权
    Dewatering device 失效
    脱水装置

    公开(公告)号:US06461505B1

    公开(公告)日:2002-10-08

    申请号:US09831178

    申请日:2001-05-04

    IPC分类号: B01D3306

    摘要: Apparatus is disclosed for dewatering aqueous suspensions including a pair of rotatable rolls forming a nip therebetween, so that the aqueous suspension can pass downwardly through the nip and be dewatered by removing a filtrate from the suspension, and the dewatered suspension can pass downwardly from the nip, at least one of the rolls being liquid permeable, and at least one screen adjacent to the roll and disposed below the nip, the screen is separated from the roll by a predetermined distance and extends along its length, the predetermined distance being a sufficient distance so that a film of filtrate on the roll passes between the roll and upper end of the screen on one side of the screen and the dewatered suspension passes on the other side of the screen so that the filtrate is prevented from contacting the dewatered suspension below the nip.

    摘要翻译: 公开了一种用于脱水含水悬浮液的设备,其包括一对在其间形成辊隙的可旋转辊,使得水性悬浮液可以向下通过辊隙并通过从悬浮液中除去滤液而脱水,并且脱水的悬浮液可以从辊隙向下通过 至少一个辊是液体可渗透的,以及至少一个与辊相邻并且设置在辊隙下方的筛网,筛网与辊分离预定距离并沿其长度延伸,预定距离为足够的距离 使得辊上的滤液膜在筛网的一侧的辊和上端之间通过,并且脱水的悬浮液在筛网的另一侧上通过,从而防止滤液与脱水的悬浮液接触 掐。

    Method and apparatus for removing liquid from permeable material
    16.
    发明授权
    Method and apparatus for removing liquid from permeable material 失效
    从可渗透材料中去除液体的方法和设备

    公开(公告)号:US4818415A

    公开(公告)日:1989-04-04

    申请号:US173811

    申请日:1988-03-03

    摘要: Disclosed herein are a method for removing liquid from a permeable material, such as slurries, sludges, porous solids and permeable foams. The method involves constraining the material to be deliquified such that the material interfaces with at least one surface which is permeable to the liquid to be removed and then heating the material at one or more locations remote from the permeable surface or surfaces. Such constraining and heating of the material causes the in situ vaporization of the liquid in the vicinity of the remote location or locations. The vaporized liquid expands and forces at least some of the remaining unvaporized liquid through the permeable surface or surfaces. Because only a portion of the liquid contained in the material must be vaporized and such vaporized portion is used to remove at least some of the remaining unvaporized liquid (thereby avoiding the necessity of vaporizing all of the liquid containing in the material), significant reductions in the energy required to substantially deliquify the material may be realized through the use of the method disclosed herein.

    摘要翻译: 本文公开了一种从可渗透材料中除去液体的方法,例如浆料,淤泥,多孔固体和可渗透的泡沫。 该方法包括约束要脱色的材料,使得材料与待除去的液体可渗透的至少一个表面接触,然后在远离可渗透表面的一个或多个位置加热材料。 材料的这种约束和加热导致在远程位置附近的液体的原位汽化。 蒸发的液体膨胀并迫使剩余的未蒸发液体中的至少一些通过可渗透表面。 因为只有一部分材料中所含的液体必须蒸发,并且这种汽化部分用于除去至少一些剩余的未蒸发的液体(从而避免必须蒸发含有材料中的所有液体),所以显着减少 通过使用本文公开的方法可以实现使材料基本上脱色所需的能量。

    Method for dewatering a slurry using a twin belt press with cationic
amine salts
    17.
    发明授权
    Method for dewatering a slurry using a twin belt press with cationic amine salts 失效
    使用双带压机与阳离子胺盐脱水浆料的方法

    公开(公告)号:US4792406A

    公开(公告)日:1988-12-20

    申请号:US197494

    申请日:1988-05-23

    摘要: A method for dewatering a slurry of solid particles suspended in a liquid using a twin belt press dewatering system, comprising the following steps:feeding the slurry of solid particles into the dewatering system;feeding a cationic amine salt solution into the dewatering system at a point just prior to the mixing drum, the cationic amine salt being a latex copolymer of acrylamide and dimethylaminoethylmethacrylate sulfuric acid salt having a mole ratio in the range between about 30:70 to 70:30, preferably 53:47;mixing the cationic amine salt solution with the slurry of solid particles in the mixing drum; andfeeding the cationic amine salt solution/slurry mixture to the twin belt press, whereby the slurry of solid particles is dewatered. The cationic amine salt solution having a strength of less than 1% and a polymer concentration of about 35%.

    摘要翻译: 一种使用双带式压榨脱水系统对悬浮在液体中的固体颗粒的浆料进行脱水的方法,包括以下步骤:将固体颗粒的浆料进料到脱水系统中; 阳离子胺盐是丙烯酰胺和甲基丙烯酸二甲基氨基乙基酯硫酸盐的胶乳共聚物,其摩尔比在约30:70至70:1之间的范围内,将阳离子胺盐溶液加入到脱水系统中。 30,优选53:47; 将阳离子胺盐溶液与固体颗粒的浆料混合在混合鼓中; 并将阳离子胺盐溶液/浆料混合物供给到双带式压榨机中,由此使固体颗粒的浆液脱水。 阳离子胺盐溶液的强度小于1%,聚合物浓度约为35%。