Method of obtaining pinitol from carob extracts
    4.
    发明授权
    Method of obtaining pinitol from carob extracts 有权
    从角豆提取物中获得松露醇的方法

    公开(公告)号:US06699511B2

    公开(公告)日:2004-03-02

    申请号:US09924830

    申请日:2001-08-08

    IPC分类号: A01N6500

    CPC分类号: C07C41/36 C07C43/196

    摘要: Pinitol is obtained from carob extracts by inversion of saccharose contained in the extracts to fructose and glucose to obtain a syrup, then subjecting the syrup to chromatographic separation by means of ion-exchange resins to obtain a solution of pinitol in water, and separating of the pinitol from said solution. The solution of pinitol in water preferably contains 90% or greater pinitol content. The ion-exchange resins may be strong cationic or strong anionic exchange resins.

    摘要翻译: 通过将提取物中包含的蔗糖倒置成果糖和葡萄糖从角豆提取物获得苦参糖,得到糖浆,然后通过离子交换树脂对糖浆进行色谱分离,得到鱼油在水中的溶液, 松果醇来自所述溶液。 松软醇在水中的溶液优选含有90%以上的松糖含量。 离子交换树脂可以是强阳离子或强阴离子交换树脂。

    Process for the production of ethyl tert.-alkyl ethers

    公开(公告)号:US5569787A

    公开(公告)日:1996-10-29

    申请号:US346951

    申请日:1994-11-30

    IPC分类号: C07C41/36 C07C41/00

    CPC分类号: C07C41/36 C07C43/06

    摘要: The present invention is a cyclic process for the preparation of ethyl tert.-alkyl ethers by the reaction of an alcohol, ethanol, with an iso-olefin such as isobutylene or isoamylene wherein an effluent from the reaction zone is separated in a distillation column to provide an overhead effluent stream and a bottoms effluent stream comprising ethyl tert.-alkyl ether and unreacted ethanol. The unreacted ethanol is recovered in an adsorption zone comprising a selective adsorbent selected from the group consisting of zeolite 13X, sodium zeolite Y, alumina, silicalite and mixtures thereof. The invention is useful in recovering unreacted ethanol from the bottoms effluent stream and returning the unreacted ethanol to the reaction zone. The invention reduces the cost of this separation which is complicated by the formation of an azeotrope between the unreacted alcohol and the ether.

    Process for producing diisopropyl ether with removal of acid material
    8.
    发明授权
    Process for producing diisopropyl ether with removal of acid material 失效
    除去酸性物质生产二异丙醚的方法

    公开(公告)号:US5504257A

    公开(公告)日:1996-04-02

    申请号:US312365

    申请日:1994-09-26

    CPC分类号: C07C41/05 C07C41/06 C07C41/36

    摘要: A process for the production of diisopropyl ether where acid is removed, without extraction, from the reactor effluent before being recycled to the reactor or being passed to downstream processing units has been developed. The process involves (1) reacting propylene and water to produce isopropyl alcohol in a reactor and reacting the isopropyl alcohol with propylene to produce diisopropyl ether in the presence of an acidic ion exchange resin catalyst to afford a reactor effluent stream containing at least water, isopropyl alcohol, diisopropyl ether, propylene, and acid, (2) passing the reactor effluent to an acid removal zone to produce an acid-depleted stream, (3) dividing the acid-depleted stream into two portions, and (4) recycling a portion to the reactor and collecting a portion.

    摘要翻译: 已经开发了一种生产二异丙醚的方法,其中在被循环到反应器中或被传送到下游处理单元之前,从反应器流出物中除去酸而不提取酸。 该方法包括(1)使丙烯和水在反应器中反应生成异丙醇,并使异丙醇与丙烯反应,在酸性离子交换树脂催化剂存在下反应生成二异丙基醚,得到至少含有水,异丙基 醇,二异丙基醚,丙烯和酸,(2)使反应器流出物通过酸去除区以产生贫酸流,(3)将贫酸流分成两部分,和(4)回收部分 到反应器并收集一部分。

    Single stage diisopropyl ether process using aqueous extraction and ion
exchange treating for SO.sub.3 removal
    9.
    发明授权
    Single stage diisopropyl ether process using aqueous extraction and ion exchange treating for SO.sub.3 removal 失效
    使用水提取和离子交换处理除去SO 3的单级二异丙醚方法

    公开(公告)号:US5371301A

    公开(公告)日:1994-12-06

    申请号:US79768

    申请日:1993-06-21

    IPC分类号: C07C41/05 C07C41/36

    CPC分类号: C07C41/05 C07C41/36

    摘要: In a single stage process for producing diisopropyl ether, SO.sub.3 from a DIPE reactor effluent is transferred to an aqueous phase in a liquid extraction zone and removed from the aqueous phase using a basic ion exchange resin disposed in an SO.sub.3 removal zone. As a consequence, DIPE reactor effluent can be returned to the DIPE reactor to serve as a solvent and to assist in providing cooling to the DIPE reactor without causing catalyst deactivation.

    摘要翻译: 在制备二异丙醚的单阶段方法中,将DIPE反应器流出物中的SO 3转移到液相萃取区中的水相中,并使用设置在SO 3去除区中的碱性离子交换树脂从水相中除去。 因此,DIPE反应器流出物可以返回到DIPE反应器中以用作溶剂,并且有助于在不引起催化剂失活的情况下向DIPE反应器提供冷却。

    Process for production of an ether-rich additive
    10.
    发明授权
    Process for production of an ether-rich additive 失效
    生产富含醚的添加剂的方法

    公开(公告)号:US5210326A

    公开(公告)日:1993-05-11

    申请号:US847194

    申请日:1992-03-06

    IPC分类号: C07C41/06

    CPC分类号: C07C41/06 C07C41/36

    摘要: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated alumina medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated alumina mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.

    摘要翻译: 一种生产用于汽油的富醚添加剂的方法,更具体地说,从轻质烃流中生产MTBE,TAME及其混合物,包括使轻质烃流优选由FCC原料通过超活化氧化铝介质 在醚化过程条件下,在将原料与催化剂接触之前除去氮化合物,硫醇和水。 本发明还包括一种用于再生生产用于汽油的富醚添加剂的方法中所用的原料的用过的超活化氧化铝介质的方法。