Method of separation of sugars and concentrated sulfuric acid
    3.
    发明授权
    Method of separation of sugars and concentrated sulfuric acid 失效
    分离糖和浓硫酸的方法

    公开(公告)号:US4608245A

    公开(公告)日:1986-08-26

    申请号:US788397

    申请日:1985-10-17

    CPC分类号: C13K1/04 C01B17/925

    摘要: A method of recovering concentrated sulfuric acid from the product obtained from the acid hydrolysis of a cellulose-containing material such a biomass. The method involves contacting the product with an extraction solvent comprising one or more of the C.sub.4 -C.sub.7 alcohols as the major component to separate the product into a sulfuric acid enriched phase. The sulfuric acid from this enriched phase is then separated and recovered by a further extraction procedure.

    摘要翻译: 从由含纤维素材料如生物质的酸水解获得的产物中回收浓硫酸的方法。 该方法包括使产物与包含一种或多种C 4 -C 7醇作为主要组分的萃取溶剂接触,以将产物分离成富含硫酸的相。 然后通过进一步的提取方法将来自该富集相的硫酸分离并回收。

    Process of inhibiting corrosion in spent sulfuric acid sludge systems
    6.
    发明授权
    Process of inhibiting corrosion in spent sulfuric acid sludge systems 失效
    抑制硫酸盐污泥系统中的腐蚀过程

    公开(公告)号:US3698858A

    公开(公告)日:1972-10-17

    申请号:US3698858D

    申请日:1971-10-06

    IPC分类号: C01B17/92 C23F11/04

    CPC分类号: C01B17/92

    摘要: A SYSTEM FOR REDUCING THE CORROSION RATE ON METALS IN A SPENT SULFURIC ACID SLUDGE ECOVERY POCESS. THIS SYSTEM COMPRISES THE ADDITION OF A CORROSION INHIBITOR TO SPENT SULFURIC ACID SLUDGES, AS IT IS PUMPED FROM A STORAGE MEDIUM THROUGH A HEAT EXCHANGER TO MAINTAIN THESE SLUDGES AT A CONSTANT TEMPERATURE. THE CORROSION INHIBITORS CONSIST OF WATER OR WATER IN THE FORM OF DILUTE FRESH SULFURIC ACID.