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    Cyclic process for producing taurine from monoethanolamine
    1.
    发明授权
    Cyclic process for producing taurine from monoethanolamine 有权

    公开(公告)号：US11254639B1

    公开(公告)日：2022-02-22

    申请号：US17015932

    申请日：2020-09-09

    申请人： Vitaworks IP, LLC

    发明人： Songzhou Hu

    IPC分类号： C07C303/44 ,  C07C303/02 ,  C07C303/24 ,  C07C213/08 ,  C01C1/247 ,  C01C1/246

    摘要： There is disclosed a cyclic process for producing taurine from monoethanolamine comprising the steps of: (a) recovering monoethanolamine sulfate from an aqueous mother liquor solution; (b) reacting the monoethanolamine sulfate with sulfuric acid to form an aqueous solution comprised of monoethanolamine bisulfate; (c) heating the aqueous solution comprised of the monoethanolamine sulfate and optionally added monoethanolamine sulfate to yield 2-aminoethyl hydrogen sulfate ester; (d) reacting the ester with ammonium sulfite or an alkali sulfite to yield taurine and ammonium or alkali sulfate; (e) separating taurine and ammonium or alkali sulfate to give an aqueous mother liquor solution; and (f) recovering the monoethanolamine sulfate from the aqueous mother liquor solution and recycling to the monoethanolamine sulfate to step (b).

    Solar metal sulfate-ammonia based thermochemical water splitting cycle for hydrogen production
    2.
    发明授权
    Solar metal sulfate-ammonia based thermochemical water splitting cycle for hydrogen production 有权
    用于氢气生产的太阳能金属硫酸铵 - 氨基热化学水分解循环

    公开(公告)号：US08691068B1

    公开(公告)日：2014-04-08

    申请号：US12267569

    申请日：2008-11-08

    申请人： Cunping Huang ,  Ali T-Raissi ,  Nazim Muradov

    发明人： Cunping Huang ,  Ali T-Raissi ,  Nazim Muradov

    IPC分类号： C25B1/02 ,  C01C1/246 ,  C01B17/50 ,  C25B1/00

    CPC分类号： C25B1/003 ,  C01B3/06 ,  C01B13/0203 ,  C01B17/504 ,  C25B1/02 ,  Y02E60/368

    摘要： Two classes of hybrid/thermochemical water splitting processes for the production of hydrogen and oxygen have been proposed based on (1) metal sulfate-ammonia cycles (2) metal pyrosulfate-ammonia cycles. Methods and systems for a metal sulfate MSO4—NH3 cycle for producing H2 and O2 from a closed system including feeding an aqueous (NH3)4SO3 solution into a photoctalytic reactor to oxidize the aqueous (NH3)4SO3 into aqueous (NH3)2SO4 and reduce water to hydrogen, mixing the resulting aqueous (NH3)2SO4 with metal oxide (e.g. ZnO) to form a slurry, heating the slurry of aqueous (NH4)2SO4 and ZnO(s) in the low temperature reactor to produce a gaseous mixture of NH3 and H2O and solid ZnSO4(s), heating solid ZnSO4 at a high temperature reactor to produce a gaseous mixture of SO2 and O2 and solid product ZnO, mixing the gaseous mixture of SO2 and O2 with an NH3 and H2O stream in an absorber to form aqueous (NH4)2SO3 solution and separate O2 for aqueous solution, recycling the resultant solution back to the photoreactor and sending ZnO to mix with aqueous (NH4)2SO4 solution to close the water splitting cycle wherein gaseous H2 and O2 are the only products output from the closed ZnSO4—NH3 cycle.

    摘要翻译： 已经提出了基于（1）金属硫酸盐 - 氨循环（2）金属硫酸氢铵 - 氨循环的两类用于生产氢和氧的混合/热化学水分解方法。 用于从封闭系统生产H 2和O 2的金属硫酸盐MSO4-NH3循环的方法和系统，包括将（NH 3）4 SO 3水溶液进料到光催化反应器中，以将（NH 3）4 SO 3水溶液氧化成NH 3水溶液并减少水 将氢（NH 3）2 SO 4与金属氧化物（例如ZnO）混合以形成浆料，在低温反应器中加热（NH 4）2 SO 4水溶液和ZnO的浆液以产生NH 3和 H 2 O和固体ZnSO 4，在高温反应器中加热固体ZnSO 4以产生SO 2和O 2的气体混合物和固体产物ZnO，将SO 2和O 2的气体混合物与NH 3和H 2 O流混合在吸收器中以形成水溶液 （NH4）2SO3溶液和分离的O 2用于水溶液，将所得溶液再循环回光反应器，并将ZnO与（NH 4）2 SO 4水溶液混合以封闭水分解循环，其中气体H 2和O 2是从 封闭的ZnSO4-NH3c ycle。

    Cyclic process for producing taurine from monoethanolamine
    4.
    发明授权
    Cyclic process for producing taurine from monoethanolamine 有权

    公开(公告)号：US11623914B2

    公开(公告)日：2023-04-11

    申请号：US17576609

    申请日：2022-01-14

    申请人： Vitaworks IP, LLC

    发明人： Songzhou Hu

    IPC分类号： C07C303/02 ,  C07C303/44 ,  C07C303/24 ,  C07C213/08 ,  C01C1/246 ,  C01C1/247

    摘要： There is disclosed a cyclic process for producing taurine from monoethanolamine comprising the steps of: (a) recovering monoethanolamine sulfate from an aqueous mother liquor solution; (b) reacting the monoethanolamine sulfate with sulfuric acid to form an aqueous solution comprised of monoethanolamine bisulfate; (c) heating the aqueous solution comprised of the monoethanolamine sulfate and optionally added monoethanolamine sulfate to yield 2-aminoethyl hydrogen sulfate ester; and (d) reacting the ester with ammonium sulfite or an alkali sulfite to yield taurine.

    Process for purifying a sulfur dioxide containing gas by washing with an ammonia aqueous solution
    5.
    发明授权
    Process for purifying a sulfur dioxide containing gas by washing with an ammonia aqueous solution 失效
    通过用氨水洗涤来净化含二氧化硫的气体的方法

    公开(公告)号：US4180550A

    公开(公告)日：1979-12-25

    申请号：US835085

    申请日：1977-09-20

    申请人： Andre Deschamps ,  Sigismond Franckowiak ,  Philippe Renault

    发明人： Andre Deschamps ,  Sigismond Franckowiak ,  Philippe Renault

    IPC分类号： B01D53/50 ,  B01D53/77 ,  C01B17/60 ,  C01C1/02 ,  C01C1/246 ,  C01B17/00 ,  C01B17/50

    CPC分类号： C01B17/60 ,  B01D53/501

    摘要： Process for purifying a sulfur dioxide containing gas, by washing with an ammonia aqueous solution, comprising the following steps:(a) contacting a sulfur dioxide containing gas with ammonia and/or ammonium sulfite in the presence of water, to form a solution containing ammonium bisulfite and/or sulfite;(b) reacting at least a portion of the solution obtained in step (a) with ammonium bisulfate, so as to decompose the ammonium bisulfite and sulfite and to obtain ammonium sulfate as an aqueous solution and gaseous sulfur dioxide;(c) recovering the sulfur dioxide;(d) heating the aqueous solution obtained in step (b) for vaporizing at least a portion of the water;(e) heating the product from step (d) to convert the ammonium sulfate to ammonium bisulfate and gaseous ammonia;(f) separating the gaseous ammonia obtained in step (e) and feeding it to step (a) either as such or as ammonium sulfite and,(g) feeding to step (b) the ammonium bisulfate obtained in step (e) either as such or after dissolution in water, wherein, in order to avoid an accumulation of ammonium sulfate and/or bisulfate, due the undesirable formation of ammonium sulfate, at least a portion of the ammonium sulfate and/or bisulfate from step (e) is heated with a molybdenum and/or tungsten compound for converting a portion of said ammonium sulfate and/or bisulfate to sulfur dioxide and ammonia, which are fed back to step (a).

    摘要翻译： 通过用氨水洗涤来净化含二氧化硫气体的方法，包括以下步骤：（a）在水存在下使含二氧化硫的气体与氨和/或亚硫酸铵接触，形成含有铵的溶液 亚硫酸氢盐和/或亚硫酸盐; （b）使步骤（a）中获得的溶液的至少一部分与硫酸氢铵反应，以分解亚硫酸氢铵和亚硫酸盐，得到作为水溶液和气态二氧化硫的硫酸铵; （c）回收二氧化硫; （d）加热步骤（b）中获得的水溶液以使至少一部分水蒸发; （e）加热来自步骤（d）的产物以将硫酸铵转化为硫酸氢铵和气态氨; （f）分离步骤（e）中获得的气态氨，并将其进料到步骤（a）中，或者以亚硫酸铵形式进料到步骤（a），和（g）将步骤（b）中得到的硫酸氢铵 这样或之后溶解在水中，其中为了避免硫酸铵和/或硫酸氢盐的积聚，由于不期望的形成硫酸铵，将来自步骤（e）的至少一部分硫酸铵和/或硫酸氢盐加热 与用于将一部分所述硫酸铵和/或硫酸氢盐转化成二氧化硫和氨的钼和/或钨化合物反馈到步骤（a）。

    Pastillation of ammonium sulfate nitrate
    9.
    发明授权
    Pastillation of ammonium sulfate nitrate 有权
    硝酸铵硫酸铵

    公开(公告)号：US08268279B2

    公开(公告)日：2012-09-18

    申请号：US13163861

    申请日：2011-06-20

    申请人： Michael R. Smith

    发明人： Michael R. Smith

    IPC分类号： C01C1/246 ,  C05C1/02 ,  B29B9/00

    CPC分类号： C05C1/02 ,  B01J2/20 ,  B01J2/26 ,  C05C3/005

    摘要： Processes are presented for the production of ammonium sulfate nitrate. The processes provide for producing a highly uniform product and having a substantially uniform size. The processes include reacting ammonium sulfate and ammonium nitrate to form an FASN slurry melt. The slurry melt is continuously stirred and heated to keep the slurry melt under a shear thinned condition and at a uniform temperature until the slurry melt is extruded, cooled and solidified.

    摘要翻译： 本文介绍了生产硝酸铵的方法。 这些方法提供制备高度均匀的产品并具有基本均匀的尺寸。 该方法包括使硫酸铵和硝酸铵反应形成FASN浆料熔体。 浆料熔体被连续搅拌和加热，以使浆料熔融在剪切稀化条件下并且在均匀的温度下直到浆料熔体被挤出，冷却和固化。