公开(公告)号：US4483829A

公开(公告)日：1984-11-20

申请号：US461501

申请日：1983-01-27

申请人： Giuliano Guardini

发明人： Giuliano Guardini

IPC分类号： A23J1/10 ,  C01G37/08 ,  C14C3/32 ,  C01G37/02

CPC分类号： C01G37/08 ,  A23J1/10 ,  C14C3/32 ,  Y02W30/76 ,  Y10S530/842 ,  Y10S530/859

摘要： Waste products from the chrome-tanning of hides are washed and then chopped in water, with subsequent hydrolyzation at a pH of at least 10.5 and at boiling or near-boiling temperature. The resulting suspension is filtered to yield a polypeptide solution and a cake of solids consisting essentially of chromium hydroxide. The solution is neutralized, dehydrated, cooled and filtered to provide a virtually chromium-free proteinaceous substance usable as plant or animal feed; the solids are washed, filtered and acidified to provide chromium sulfate suitable for reutilization in tanning.

摘要翻译： 将来自皮革的鞣制的废品洗涤，然后在水中切碎，随后水解至少10.5，沸点或接近沸点的温度。 过滤得到的悬浮液，得到多孔溶液和基本上由氢氧化铬组成的固体饼。 将溶液中和，脱水，冷却并过滤以提供可用作植物或动物饲料的几乎无铬的蛋白质物质; 将固体洗涤，过滤并酸化以提供适于在鞣制中再利用的硫酸铬。

公开(公告)号：US4215989A

公开(公告)日：1980-08-05

申请号：US916464

申请日：1978-06-19

申请人： James E. Cartier

发明人： James E. Cartier

IPC分类号： B01D21/01 ,  C02F1/66 ,  C14C3/06 ,  C14C3/32 ,  C22B7/00 ,  C22B7/02 ,  C22B34/32

CPC分类号： C02F1/66 ,  C14C3/06 ,  C14C3/32 ,  C22B34/32 ,  C22B7/007 ,  C22B7/02 ,  C02F2101/22 ,  C02F2103/24 ,  Y02P10/234 ,  Y02W30/76

摘要： This disclosure is concerned with a tannery primary treatment process that, in total combination, or as separate sub-process features, enables the reducing of BOD loading in such treatment, while increasing the efficiency of hexavalent chrome recovery therefrom by separating out alkaline sulfide solids from the normal unhairing beamhouse stage and utilizing the same to attain appropriate sedimentation tank sludge pH for oxidation of the chrome to the hexavalent state during incineration; and/or increasing the hexavalent chrome recovery by backwetting and roasting the ash again; and/or enabling use of such ash for recycling as a chrome tanning liquor with the side-production of an improved flocculating chrome water wash for waste treatment use.

摘要翻译： 本公开涉及一种制革初级处理方法，其总共组合或作为单独的子方法特征能够在这种处理中减少BOD负载，同时通过将碱性硫化物固体从其中分离出来提高六价铬的回收效率 正常脱毛梁屋阶段，并利用相同的方式获得适当的沉淀池污泥pH值，用于在焚烧期间将铬氧化成六价态; 和/或通过再次润湿和焙烧灰来提高六价铬回收率; 和/或能够使用这种灰分作为铬鞣制液再循环，同时生产用于废物处理用途的改进的絮凝铬水洗涤液。

公开(公告)号：US4086319A

公开(公告)日：1978-04-25

申请号：US740016

申请日：1976-11-08

申请人： Bradford H. Jones

发明人： Bradford H. Jones

IPC分类号： C14C3/32 ,  F23G7/00 ,  C01G37/02 ,  C01G37/14

CPC分类号： F23G7/00 ,  C14C3/32 ,  Y02W30/76

摘要： A process is disclosed for incinerating tannery waste solids containing organic material and chromium which comprises burning at least one ton per day of said waste in the combustion zone of an industrial furnace at a low temperature, preferably between about 800.degree. F. and 1200.degree. F., to convert at least a portion of the organic material to gases and the chromium to ash, removing the gases from the combustion zone and subjecting them to further oxidation, and removing the ash from the furnace. The waste solids include sludge separated from liquid waste, leather scrap, or preferably both. By controlling temperature, waste composition, or both, the chromium in the ash can be obtained in either trivalent or hexavalent form. The hexavalent chromium can be extracted with solvent for reuse in the tanning process. Trivalent chromium, with or without carbon, can be recovered as chromic oxide in an improved stable form for landfill, storage or shipment to a reprocessing center.

摘要翻译： 公开了一种用于焚烧含有机材料和铬的制革废物固体的方法，其包括在低温下，优选在约800°至1200°F之间的工业炉的燃烧区中每天燃烧至少一吨所述废物 将有机材料的至少一部分转化为气体，将铬转化为灰分，从燃烧区中除去气体并使其进一步氧化，并从炉中除去灰分。 废物固体包括从液体废物，皮革废料或优选两者分离的污泥。 通过控制温度，废物组成或两者，灰分中的铬可以以三价或六价形式获得。 六价铬可以用溶剂萃取，在鞣制过程中重新使用。 具有或不具有碳的三价铬可以以改进的稳定形式作为氧化铬回收，用于填埋，储存或运往后处理中心。

公开(公告)号：US4340571A

公开(公告)日：1982-07-20

申请号：US145737

申请日：1980-05-01

申请人： James E. Cartier

发明人： James E. Cartier

IPC分类号： C02F1/66 ,  C14C3/06 ,  C14C3/32 ,  C22B34/32 ,  C01G37/00 ,  C01G37/08

CPC分类号： C02F1/66 ,  C14C3/06 ,  C14C3/32 ,  C22B34/32 ,  C02F2101/22 ,  C02F2103/24 ,  Y02W30/76

摘要： This disclosure is concerned with a tannery primary treatment process that, in total combination, or as separate sub-process features, enables the reducing of BOD loading in such treatment, while increasing the efficiency of hexavalent chrome recovery therefrom by separating out alkaline sulfide solids from the normal unhairing beamhouse stage and utilizing the same to attain appropriate sedimentation tank sludge pH for oxidation of the chrome to the hexavalent state during incineration; and/or increasing the hexavalent chrome recovery by backwetting and roasting the ash again; and/or enabling use of such ash for recycling as a chrome tanning liquor with the side-production of an improved flocculating chrome water wash for waste treatment use.

摘要翻译： 本公开涉及一种制革初级处理方法，其总共组合或作为单独的子方法特征能够在这种处理中减少BOD负载，同时通过将碱性硫化物固体从其中分离出来提高六价铬的回收效率 正常脱毛梁屋阶段，并利用相同的方式获得适当的沉淀池污泥pH值，用于在焚烧期间将铬氧化成六价态; 和/或通过再次润湿和焙烧灰来提高六价铬回收率; 和/或能够使用这种灰分作为铬鞣制液再循环，同时生产用于废物处理用途的改进的絮凝铬水洗涤液。

公开(公告)号：US2418655A

公开(公告)日：1947-04-08

申请号：US60065245

申请日：1945-06-20

申请人： JOSEPH MICHELMAN

发明人： JOSEPH MICHELMAN

IPC分类号： C14C3/32

CPC分类号： C14C3/32 ,  Y02W30/76

公开(公告)号：US20040168266A1

公开(公告)日：2004-09-02

申请号：US10471879

申请日：2003-09-15

发明人： G Wayne McGraw

IPC分类号： C09B067/34

CPC分类号： C14C3/32 ,  C14C3/10 ,  C14C3/30 ,  Y02W30/76

摘要： The present invention relates to a novel method of recovering and recycling active tannins from spent vegetable tanning liquors. Using a low molecular weight alcohol as the extraction agent produces an alcohol fraction or precipitate containing extracted active tannins, and leaves virtually all non-tannins in the aqueous phase of the spent tanning liquor. The methods and resulting chemical mixtures of the present invention have a variety of uses and applications. The method can be applied to freshly produced or aged spent vegetable tanning liquors. The methods are further applicable to dried forms of spent tanning liquors through aqueous reconstitution of dried ReTan, followed by alcohol extraction. The recovered chemical mixture contains recovered tannins which can be recycled through combination with fresh tanning liquors to form an improved tanning liquor.

摘要翻译： 本发明涉及一种从废植物鞣液中回收和回收活性单宁酸的新方法。 使用低分子量醇作为提取剂产生含有提取的活性单宁的醇馏分或沉淀物，并且在废鞣制液体的水相中实际上留下所有非鞣酸。 本发明的方法和所得化学混合物具有多种用途和应用。 该方法可应用于新鲜生产或老化的废植物鞣液。 该方法通过干燥的ReTan的水重​​构，进一步适用于废鞣液的干燥形式，随后进行醇提取。 回收的化学混合物含有回收的单宁，其可通过与新鲜的鞣制液组合再循环以形成改进的鞣制液。

公开(公告)号：US20040030102A1

公开(公告)日：2004-02-12

申请号：US10451501

申请日：2003-06-20

发明人： Giancarlo Artoni

IPC分类号： C07K014/78

CPC分类号： C09H1/04 ,  C09H3/00 ,  C14C3/32 ,  Y02P20/582 ,  Y02W30/76

摘要： The present invention refers to a continuous process for gelatines production and chromium recovery from tanned hides and skins shaving, containing trivalent chromium. The claimed process consists in an acid hydrolysis followed by separations of the various products, wherefrom three major components are obtained: gelatine from collagen, tanning chromium salt, used for hides and skins tanning, and the hydrolysing agent. The gelatines obtained can be used as adhesives in various industrial sectors, i.e. from the industry of abrasives to the paper and cardboard industry, to bookbinding, to the industry of dyes and plasters, to the production of matches. The chromium salts obtained can be recovered and reused in the tanning industry; the hydrolysing agent may be recycled.

摘要翻译： 本发明涉及含有三价铬的鞣制皮革和皮肤削皮的明胶生产和铬回收的连续方法。 要求保护的方法包括酸水解，随后分离各种产物，由此得到三种主要组分：来自胶原的明胶，用于皮革和皮肤鞣制的鞣制铬盐和水解剂。 所获得的明胶可以用作各种工业部门中的粘合剂，即从研磨工业到纸和纸板工业，到装订，染色和灰泥工业到制作。 获得的铬盐可以在鞣制工业中回收和再利用; 水解剂可以再循环。

公开(公告)号：US07077966B2

公开(公告)日：2006-07-18

申请号：US10451501

申请日：2001-12-21

申请人： Giancarlo Artoni

发明人： Giancarlo Artoni

IPC分类号： B01D1/68

CPC分类号： C09H1/04 ,  C09H3/00 ,  C14C3/32 ,  Y02P20/582 ,  Y02W30/76

摘要： The present invention refers to a continuous process for gelatines production and chromium recovery from tanned hides and skins shaving, containing trivalent chromium. The claimed process consists in an acid hydrolysis followed by separations of the various products, wherefrom three major components are obtained: gelatine from collagen, tanning chromium salt, used for hides and skins tanning, and the hydrolysing agent. The gelatines obtained can be used as adhesives in various industrial sectors, i.e. from the industry of abrasives to the paper and cardboard industry, to bookbinding, to the industry of dyes and plasters, to the production of matches. The chromium salts obtained can be recovered and reused in the tanning industry; the hydrolysing agent may be recycled.

摘要翻译： 本发明涉及含有三价铬的鞣制皮革和皮肤削皮的明胶生产和铬回收的连续方法。 要求保护的方法包括酸水解，随后分离各种产物，由此获得三种主要成分：来自胶原的明胶，用于皮革和皮肤鞣制的鞣制铬盐，以及水解剂。 所获得的明胶可以用作各种工业部门中的粘合剂，即从研磨工业到纸和纸板工业，到装订，染色和灰泥工业到制作。 获得的铬盐可以在鞣制工业中回收和再利用; 水解剂可以再循环。

公开(公告)号：US20050069472A1

公开(公告)日：2005-03-31

申请号：US10495312

申请日：2002-11-12

申请人： Manuela Candido ,  Massimo Neresini

发明人： Manuela Candido ,  Massimo Neresini

IPC分类号： C14C3/32 ,  C09B67/00 ,  C01G37/00

CPC分类号： C14C3/32 ,  Y02W30/76

摘要： Chrome-based product in a hydrolized proteic compound and process for the making thereof, comprising a step of solubilizing the protein-Chrome complex contained in tanning residues like e.g. the shavings and the trimmings, produced from tannage hide shaving and trimming steps, the fleshing, the limed pieces and the splittings, produced from pretanning processes, and the shaving sludges, allowing to effectively carry Chrome in the tanning processes and to recycle the Chrome contained in the wastes from tanning processes, directly making a product reusable in the latter.

摘要翻译： 一种水解蛋白质化合物中的基于铬的产品及其制备方法，包括将包含在鞣制残留物中的蛋白质 - 铬络合物溶解的步骤，例如， 由鞣革生产的刨花和修边，隐藏剃须和修剪步骤，由预制工艺生产的肉质，碎片和碎片以及剃须污泥，可以在鞣制过程中有效地携带铬并回收铬 在来自鞣制过程的废物中，直接使产品在后者中可重复使用。

公开(公告)号：US5271912A

公开(公告)日：1993-12-21

申请号：US848775

申请日：1992-03-10

申请人： Maryann M. Taylor ,  Edward J. Diefendorf ,  Willian N. Marmer ,  Eleanor M. Brown

发明人： Maryann M. Taylor ,  Edward J. Diefendorf ,  Willian N. Marmer ,  Eleanor M. Brown

IPC分类号： C01G37/00 ,  C02F3/34 ,  C12P21/06 ,  C12S7/00 ,  C14C3/32 ,  C22B34/32 ,  C12J7/00

CPC分类号： C02F3/342 ,  C01G37/00 ,  C12P21/06 ,  C14C3/32 ,  C22B34/32 ,  C02F2103/24 ,  Y02W30/76 ,  Y10S210/913

摘要： Chromium containing protein materials are treated by processes which include the steps of: combining the material to be treated with sufficient water to effect the solubilization of the gelable protein recovered therefrom, and an alkali additive. The mixture is thereafter held at a temperature of from about 60.degree. C. to about 85.degree. C. for a period of time of from about 0.5 hour to about 8 hours. The mixture is then filtered to remove the aqueous phase, which contains solubilized gelable protein. Subsequently, water is again added to the resultant chrome-containing proteinaceous cake and at least one enzyme is utilized to hydrolyze the remaining protein thus producing a product containing solubilized partially hydrolyzed protein and insoluble chromium. After separation, the chrome in the insoluble residue may be recycled into the pickling or tanning process, and the essentially chrome-free protein components may be used as ingredients in feeds, fertilizers, and cosmetics. The processes of the present invention are used to particular advantage to treat wastes from the leather tanning industry including blue stock, chrome shavings, chrome buffing dust, chrome cakes and chrome sludges.

摘要翻译： 含铬蛋白质材料通过包括以下步骤的方法处理：将待处理的材料与足够的水组合以实现从其回收的可胶凝蛋白的溶解，以及碱添加剂。 然后将混合物在约60℃至约85℃的温度下保持约0.5小时至约8小时的时间。 然后过滤混合物以除去含有溶解的可胶凝蛋白的水相。 随后，再向所得含铬蛋白质滤饼中加入水，并使用至少一种酶来水解剩余的蛋白质，从而产生含有溶解的部分水解蛋白质和不溶性铬的产物。 分离后，不溶残留物中的铬可以再循环到酸洗或鞣制过程中，并且基本上不含铬的蛋白质组分可以用作饲料，肥料和化妆品中的成分。 本发明的方法特别有利于处理皮革制革行业的废物，包括蓝色原料，铬屑，铬抛光粉，铬蛋糕和铬泥。