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公开(公告)号：US08530716B2
公开(公告)日：2013-09-10
申请号：US12191745
申请日：2008-08-14
IPC分类号： C07C7/14
摘要： Processes for separating a solid from a solids-liquids slurry under conditions that prevent ingress of molecular oxygen are advantageous where the presence of molecular oxygen would otherwise reduce efficiencies, contribute to limited product yields, and potentially compromise safe operation of the process or downstream unit operations. Among the various embodiments disclosed herein, is a process utilizing filter columns as solid-liquid separators in combination with crystallization and reslurry unit operations to recover a product component from an initial feed mixture of miscible components. Embodiments of the disclosed processes may include the separation and purification of a product component using a crystallizer in series with a filter column followed by a chemical reactor, using a reslurry drum in series with a filter column, and using a combination of crystallizers and/or reslurry drums in series with at least one filter column. The use of filter columns in such processes is particularly attractive because these columns, when operated under the conditions disclosed herein, limit the undesirable ingress of molecular oxygen into the various process streams, and further improve process efficiencies related to both product component recovery and operating costs.
摘要翻译： 在防止分子氧进入的条件下将固体与固体液体浆料分离的方法是有利的，其中分子氧的存在否则会降低效率，有助于有限的产物产率，并潜在地危及该方法或下游单元操作的安全操作 。 在本文公开的各种实施方案中，是使用过滤柱作为固液分离器与结晶和再浆化装置操作相结合以从可混溶组分的初始进料混合物中回收产物组分的方法。 所公开的方法的实施方案可以包括使用结晶器与过滤器柱随后是化学反应器串联的结晶器分离和纯化产物组分，使用与过滤柱串联的重整浆鼓，并且使用结晶器和/或 与至少一个过滤柱串联重新重新排列。 在这种方法中使用过滤塔是特别有吸引力的，因为这些柱在本文公开的条件下操作时限制了分子氧不期望地进入各种工艺流中，并且进一步提高了与产品组分回收率和操作成本有关的工艺效率 。
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公开(公告)号：US5095142A
公开(公告)日：1992-03-10
申请号：US620154
申请日：1990-11-29
申请人： Rose M. Janulis
发明人： Rose M. Janulis
IPC分类号： C07C51/265
CPC分类号： C07C51/265
摘要： A process for oxidizing a dialkyl substituted benzene, such as meta-xylene, to an aromatic polycarboxylic acid, such as isophthalic acid, in the presence of a solvent, such as acetic acid, in an oxidation zone followed by an oxidation-crystallization zone, wherein a secondary dehydration tower is used to separate water from the solvent in the overhead stream from the oxidation-crystallization zone and provide a solvent-rich fluid for recycle to the oxidation zone, resulting in expanded capacity of the process coupled with a minimization of captial cost.
摘要翻译： 在溶剂如乙酸的存在下，在氧化区域之后氧化 - 结晶区域，将二烷基取代的苯如间二甲苯氧化成芳族多元羧酸如间苯二甲酸的方法， 其中使用二次脱水塔将水与来自氧化 - 结晶区的塔顶物流中的溶剂分离，并提供富含溶剂的流体用于再循环到氧化区，导致该方法的扩展能力加上最小化的 成本。
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3.发明授权Process for increasing the yield of purified isophthalic acid and reducing waste-water treatment a 失效提高纯化间苯二甲酸的产率和减少废水处理的方法a
公开(公告)号：US5110984A
公开(公告)日：1992-05-05
申请号：US610147
申请日：1990-11-06
申请人： Rose M. Janulis
发明人： Rose M. Janulis
IPC分类号： C07C51/43
CPC分类号： C07C51/43
摘要： The invention is an improved method of purification of isophthalic acid comprising recycling a portion of the mother liquor solution into the feed solution of an isophthalic acid purification process. The improved method comprises the following steps:(a) dissolving crude isophthalic acid in a feed solution comprising a polar solvent at a temperature of from about 100.degree. C. to about 300.degree. C.;(b) crystallizing the isophthalic acid by cooling the solution of step (a) to a temperature of from about 35.degree. C. to about 120.degree. C.;(c) separating the isophthalic acid crystals from the solution and drying the crystals; and(d) recycling a portion of the solution remaining after the separation of isophthalic acid crystals back to the feed solution.
摘要翻译： 本发明是一种改进的间苯二甲酸纯化方法，包括将一部分母液溶液再循环到间苯二甲酸纯化方法的进料溶液中。 改进的方法包括以下步骤：（a）在约100℃至约300℃的温度下将粗间苯二甲酸溶解在包含极性溶剂的进料溶液中; （b）通过将步骤（a）的溶液冷却至约35℃至约120℃的温度，使间苯二甲酸结晶; （c）从溶液中分离出间苯二甲酸晶体并干燥晶体; 和（d）将间苯二甲酸晶体分离后的剩余溶液的一部分再循环回进料溶液。
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公开(公告)号：US20100041936A1
公开(公告)日：2010-02-18
申请号：US12191745
申请日：2008-08-14
摘要： Processes for separating a solid from a solids-liquids slurry under conditions that prevent ingress of molecular oxygen are advantageous where the presence of molecular oxygen would otherwise reduce efficiencies, contribute to limited product yields, and potentially compromise safe operation of the process or downstream unit operations. Among the various embodiments disclosed herein, is a process utilizing filter columns as solid-liquid separators in combination with crystallization and reslurry unit operations to recover a product component from an initial feed mixture of miscible components. Embodiments of the disclosed processes may include the separation and purification of a product component using a crystallizer in series with a filter column followed by a chemical reactor, using a reslurry drum in series with a filter column, and using a combination of crystallizers and/or reslurry drums in series with at least one filter column. The use of filter columns in such processes is particularly attractive because these columns, when operated under the conditions disclosed herein, limit the undesirable ingress of molecular oxygen into the various process streams, and further improve process efficiencies related to both product component recovery and operating costs.
摘要翻译： 在防止分子氧进入的条件下将固体与固体液体浆料分离的方法是有利的，其中分子氧的存在否则会降低效率，有助于有限的产物产率，并潜在地危及该方法或下游单元操作的安全操作 。 在本文公开的各种实施方案中，是使用过滤柱作为固液分离器与结晶和再浆化装置操作相结合以从可混溶组分的初始进料混合物中回收产物组分的方法。 所公开的方法的实施方案可以包括使用结晶器与过滤器柱随后是化学反应器串联的结晶器分离和纯化产物组分，使用与过滤柱串联的重整浆鼓，并且使用结晶器和/或 与至少一个过滤柱串联重新重新排列。 在这种方法中使用过滤塔是特别有吸引力的，因为这些柱在本文公开的条件下操作时限制了分子氧不期望地进入各种工艺流中，并且进一步提高了与产品组分回收率和操作成本有关的工艺效率 。
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