公开(公告)号：US08491864B2

公开(公告)日：2013-07-23

申请号：US11648411

申请日：2006-12-29

申请人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

发明人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

IPC分类号： C01B11/06

CPC分类号： C01B11/062

摘要： A method for continuous manufacture of higher-strength, lower-salt, aqueous sodium hypochlorite bleach from lower-strength aqueous sodium hypochlorite bleach that has some sodium hydroxide and that is essentially free of sodium chloride (salt) crystals, aqueous sodium hydroxide solution having a concentration by weight within a range from about 45% to about 51%, chlorine in gas and/or liquid phase that may or may not include inerts, and a recycle solution. Slurry is withdrawn from the tank at a level below where the lower-strength bleach, the sodium hydroxide solution, the chlorine, and the recycle solution begin to mix with slurry already in the tank. A first portion of the slurry is withdrawn and used as the recycle solution. A second portion of the slurry is withdrawn and processed to separate substantially all salt crystals from residual liquid that is recovered as the higher-strength lower-salt, aqueous sodium hypochlorite bleach.

摘要翻译： 从具有一些氢氧化钠并且基本上不含氯化钠（盐）晶体的低强度次氯酸钠漂白剂连续制造较高强度，低盐的次氯酸钠水溶液的方法，其具有 浓度在约45％至约51％的范围内，气体和/或液相中可能含有或不包括惰性气体的氯，以及再循环溶液。 将淤浆从低于其下的低强度漂白剂，氢氧化钠溶液，氯气和再循环溶液开始与已经在罐中的浆料混合的水平段从罐中取出。 取出第一部分浆料并用作再循环溶液。 将浆料的第二部分取出并处理以将基本上所有的盐晶体与作为较高强度的低级盐酸次氯酸钠漂白剂回收的残余液体分离。

公开(公告)号：US08623318B2

公开(公告)日：2014-01-07

申请号：US11652890

申请日：2007-01-12

申请人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

发明人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

IPC分类号： C01B11/06

CPC分类号： C01B11/062

摘要： A method for continuous manufacture of higher-strength, lower-salt, aqueous sodium hypochlorite bleach from lower-strength aqueous sodium hypochlorite bleach that has some sodium hydroxide and that is essentially free of sodium chloride (salt) crystals, aqueous sodium hydroxide solution having a concentration by weight within a range from about 45% to about 51%, chlorine in gas and/or liquid phase that may or may not include inerts, and a recycle solution. Slurry is withdrawn from the tank at a level below where the lower-strength bleach, the sodium hydroxide solution, the chlorine, and the recycle solution begin to mix with slurry already in the tank. A first portion of the slurry is withdrawn and used as the recycle solution. A second portion of the slurry is withdrawn and processed to separate substantially all salt crystals from residual liquid that is recovered as the higher-strength lower-salt, aqueous sodium hypochlorite bleach. The separation processes uses a pre-thickening tank, a hydrocyclone, and a two-stage centrifuge to recover substantially dry crystalline salt having at least 96% salt content.

摘要翻译： 从具有一些氢氧化钠并且基本上不含氯化钠（盐）晶体的低强度次氯酸钠漂白剂连续制造较高强度，低盐的次氯酸钠水溶液的方法，其具有 浓度在约45％至约51％的范围内，气体和/或液相中可能含有或不包括惰性气体的氯，以及再循环溶液。 将淤浆从低于其下的低强度漂白剂，氢氧化钠溶液，氯气和再循环溶液开始与已经在罐中的浆料混合的水平段从罐中取出。 取出第一部分浆料并用作再循环溶液。 将浆料的第二部分取出并处理以将基本上所有的盐晶体与作为较高强度的低级盐酸次氯酸钠漂白剂回收的残余液体分离。 分离过程使用预增稠罐，水力旋流器和两级离心机来回收具有至少96％盐含量的基本上干燥的结晶盐。

公开(公告)号：US07175824B2

公开(公告)日：2007-02-13

申请号：US11178580

申请日：2005-07-11

申请人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

发明人： Duane J Powell ,  Robert B. Bebow ,  Brent J. Hardman

IPC分类号： C01B11/06

CPC分类号： C01B11/062

摘要： A process and apparatus for the manufacture of high-strength, low-salt sodium hypochlorite. An aqueous solution that comprises certain weight percentages of sodium hypochlorite and sodium hydroxide and that is essentially free of sodium chloride (salt) crystals, an aqueous solution that comprises a certain weight percentage of sodium hydroxide, and chlorine in gas and/or liquid phase that may or may not include inerts are reacted in a tank. This creates a solution having a precipitation zone where salt crystals are precipitating out of solution and falling downward to form a slurry, some of which is withdrawn, then cooled, and then re-introduced into the precipitation zone. Above the precipitation zone is a crystal-free mother liquor zone consisting essentially of crystal-free mother liquor containing a weight percentage of sodium hypochlorite greater than that of than the lower strength aqueous sodium hypochlorite bleach being reacted.

摘要翻译： 用于制造高强度，低盐次氯酸钠的方法和装置。 含有一定重量百分数的次氯酸钠和氢氧化钠并且基本上不含氯化钠（盐）晶体的水溶液，包含一定重量百分比的氢氧化钠的水溶液和气体和/或液相中的氯， 可能或可能不包括惰性物质在罐中反应。 这产生了具有沉淀区的溶液，其中盐晶体从溶液中沉淀出并向下落下以形成浆料，其中一些被抽出，然后冷却，然后再引入沉淀区。 沉淀区以上是无结晶的母液区，基本上由无结晶母液组成，其中含有次氯酸钠的重量百分比大于低强度的次氯酸钠次氯酸钠漂白剂的反应。