公开(公告)号：WO2011095978A1

公开(公告)日：2011-08-11

申请号：PCT/IL2011/000132

申请日：2011-02-06

Applicant: EYAL RESEARCH CONSULTANTS LTD. ,  ASHER VITNER LTD. ,  EYAL, Aharon ,  VITNER, Asher ,  MALI, Revital ,  RAZ, Carmi

Inventor： EYAL, Aharon ,  VITNER, Asher ,  MALI, Revital ,  RAZ, Carmi

IPC: C01B25/234 ,  C01B17/90 ,  C01B21/46

CPC classification number: C01B25/234 ,  C01B17/903 ,  C01B21/46

Abstract: The present invention provides an organic phase composition comprising (f) a first solvent (S1 ) characterized by water solubility of less than 10% and by at least one of (a1 ) having a polarity related component of Hoy's cohesion parameter (delta-P) between 5 and 10 MPa 1/2 and (b1 ) having a Hydrogen bonding related component of Hoy's cohesion parameter (delta-H) between 5 and 20 MPa 1/2 ; (g) a second solvent (S2) characterized by a water solubility of at least 30% and by at least one of (a2) having delta-P greater than 8 MPa 1/2 and (b2) having delta-H greater than 12 MPa 1/2 ; (h) water (i) a non-volatile strong acid, and (j) a salt thereof.

Abstract translation: 本发明提供一种有机相组合物，其包含（f）第一溶剂（S1），其特征在于水溶解度小于10％，和至少一种（a1）具有Hoy的内聚参数（Δ-P）的极性相关成分， 5〜10MPa1 / 2，（b1）具有5〜20MPa·1/2的Hoy粘结参数（δ-H）的氢键相关成分; （g）第二溶剂（S2），其特征在于水溶解度为至少30％，和至少一种具有δ-P大于8MPa1 / 2的（a2）和（b2）具有大于12MPa1的Δ-H / 2; （h）水（i）非挥发性强酸，和（j）其盐。

公开(公告)号：WO2009036674A1

公开(公告)日：2009-03-26

申请号：PCT/CN2008/071801

申请日：2008-07-29

Applicant: 陈培豪

Inventor： 陈培豪

IPC: C01B17/90 ,  C13K1/02

CPC classification number: C13K1/02 ,  C01B17/90 ,  C01B17/903

Abstract: A method for recovering sulfuric acid from concentrated acid hydrolyzate of plant cellulose material is provided. Some examples therein relate to a method, which comprises the following steps: mixing the concentrated acid hydrolyzate of plant cellulose material with a liquid organic precipitant, precipitating sugars from the solution of the hydrolyzate, separating organic precipitant from the remained solution by distillation or extraction, and obtaining pure sulfuric acid solution. The method of separating and recovering sulfuric acid from main hydrolyzate by deposition technique can recover as high as 90% sugars and acid by less precipitant, and thus cuts down the cost of acid recovery greatly. Other examples therein relate to another method, which comprises the following steps: mixing the concentrated acid hydrolyzate of plant cellulose material with alcohols incompatible with water; separating sugars; contacting the remained acid-alcohol solution with water, of which sulfuric acid enters into water; then separating sulfuric acid and alcohols; and obtaining sulfuric acid solution. This method avoids the use of poisonous, inflammable and explosive organic solvents, avoids the energy consumption for recovering these organic solvents, and cuts down the cost of acid recovery greatly.

公开(公告)号：WO1995003994A1

公开(公告)日：1995-02-09

申请号：PCT/JP1994001212

申请日：1994-07-22

Applicant: NITTETSU MINING CO., LTD. ,  IYATOMI, Nobuyoshi ,  MIKAMI, Yasuie

Inventor： NITTETSU MINING CO., LTD.

IPC: C01B17/90

CPC classification number: C22B34/1259 ,  C01B17/902 ,  C01B17/903 ,  C01G23/001 ,  C22B34/125 ,  Y10S423/02

Abstract: For the purpose of efficiently and easily regenerating a sulfuric acid solution having a high concentration and a low impurity content from a metal sulfate-containing waste sulfuric acid solution and waste liquor formed during acid cleaning which are discharged from titanium (IV) oxide-production process carried out according to the sulfuric acid method, titanium present in the metal sulfate-containing waste sulfuric acid solution is removed through a solvent-extraction treatment and then the solution obtained after the solvent-extraction is subjected to a diffusive dialysis treatment.

Abstract translation: 为了从含有金属硫酸盐的废硫酸溶液和在酸清洗期间形成的从钛（IV）氧化物生产过程中排出的废液有效且容易地再生具有高浓度和低杂质含量的硫酸溶液 根据硫酸法进行，通过溶剂萃取处理除去存在于含金属硫酸盐的废硫酸溶液中的钛，然后对溶剂萃取后得到的溶液进行扩散透析处理。

公开(公告)号：WO1991009810A1

公开(公告)日：1991-07-11

申请号：PCT/US1990006772

申请日：1990-11-19

Applicant: EAST PENN MANUFACTURING CO., INC.

Inventor： EAST PENN MANUFACTURING CO., INC. ,  STITZ, Robert, A. ,  BRICKER, Mark

IPC: C01B17/90

CPC classification number: H01M10/54 ,  C01B17/903 ,  Y02W30/84 ,  Y10S423/02

Abstract: The present invention discloses a process of extraction and filtration for removing iron impurities from the acid in used lead-acid batteries. Produced is a reclaimed battery acid which performs very well in new batteries and avoids costs and environmental risks entailed with present methods. In the preferred embodiment, the present invention discloses a process for rejuvenation of strip acid employed in such reclamation. In the process of removing impurities from battery acid through extraction, the extractant becomes loaded with impurities and loses its effectiveness. Extractant may be regenerated by contacting it with a strip acid. A reduction process is employed to regenerate the strip acid so that it may be used repeatedly. By recycling the extractant and the strip acid in the present invention, the present process further increases the effectiveness of battery acid regeneration--producing a reclaimed battery acid fluid which performs very well in new batteries and substantially reducing by-product waste in the regeneration of the battery acid.

Abstract translation: 本发明公开了一种用于从使用过的铅酸电池中的酸中除去铁杂质的提取和过滤方法。 生产的再生电池酸在新电池中表现非常好，避免了现有方法带来的成本和环境风险。 在优选的实施方案中，本发明公开了一种在这种回收中使用的带状酸的再生方法。 在通过萃取从电池酸中除去杂质的过程中，萃取剂变成负载杂质，失去效力。 萃取剂可以通过与带状酸接触来再生。 采用还原方法来再生带状酸，使其可以重复使用。 通过在本发明中再循环萃取剂和带状酸，本方法进一步提高了电池酸再生的效果 - 产生在新电池中表现得非常好的再生电池酸性流体，并且在再生中显着减少了副产物浪费 电池酸。