公开(公告)号：US5801269A

公开(公告)日：1998-09-01

申请号：US848367

申请日：1997-04-30

申请人： Carrie A. Feeney ,  Ida L. Jones ,  Bennett C. Ward ,  Thomas M. Kenesson ,  Charles B. Hilton ,  Michael R. Ahern ,  Gregory M. Adams ,  Edward M. de la Garza ,  B. Frank Wood, Jr. ,  Thomas L. Grantland ,  Kan J. Tsai ,  James L. Ragan

发明人： Carrie A. Feeney ,  Ida L. Jones ,  Bennett C. Ward ,  Thomas M. Kenesson ,  Charles B. Hilton ,  Michael R. Ahern ,  Gregory M. Adams ,  Edward M. de la Garza ,  B. Frank Wood, Jr. ,  Thomas L. Grantland ,  Kan J. Tsai ,  James L. Ragan

IPC分类号： C07C67/52 ,  C07C67/48

CPC分类号： C07C67/52

摘要： Processes for recovering 4,4'-dimethyl bibenzoate (DMBB) from byproduct streams of dimethyl terephthalate (DMT) production are disclosed. The byproduct streams are treated to produce an overhead stream which includes DMBB. In one aspect of the invention, the overhead product stream is added to an organic solvent under conditions sufficient to rapidly form a suspension of crystallized DMBB. In another aspect of the invention, the overhead is dissolved in an appropriate organic solvent and cooled to form a suspension of DMBB crystals in the solvent. A portion of the suspension is removed, and the remaining portion of the suspension centrifuged to recover DMBB crystals. In still another aspect of the invention, the overhead stream is treated with an organic solvent to form a slurry of DMBB crystals, and the resultant slurry thermally treated to increase the concentration of DMBB crystals therein while also solubilizing any organic contaminants.

摘要翻译： 公开了从对苯二甲酸二甲酯（DMT）生产副产物流中回收4,4'-二甲基苯甲酸酯（DMBB）的方法。 处理副产物流以产生包括DMBB的开销流。 在本发明的一个方面，在足以快速形成结晶DMBB悬浮液的条件下，将塔顶产物流加入到有机溶剂中。 在本发明的另一方面，将塔顶馏出物溶于合适的有机溶剂中并冷却以形成DMBB晶体在溶剂中的悬浮液。 将一部分悬浮液除去，并将悬浮液的剩余部分离心以回收DMBB晶体。 在本发明的另一方面，用有机溶剂处理塔顶馏出物以形成DMBB晶体的浆料，并将所得浆料热处理以增加其中DMBB晶体的浓度，同时也溶解任何有机污染物。

公开(公告)号：US5068448A

公开(公告)日：1991-11-26

申请号：US593143

申请日：1990-10-05

申请人： Daniel D. Lindley ,  Thomas A. Curtis ,  Timothy R. Ryan ,  Edward M. de la Garza ,  Charles B. Hilton ,  Thomas M. Kenesson

发明人： Daniel D. Lindley ,  Thomas A. Curtis ,  Timothy R. Ryan ,  Edward M. de la Garza ,  Charles B. Hilton ,  Thomas M. Kenesson

IPC分类号： B01J27/12 ,  C07B61/00 ,  C07C45/46 ,  C07C45/85 ,  C07C49/76 ,  C07C49/825 ,  C07C51/60

CPC分类号： C07C51/60 ,  C07C45/46 ,  C07C45/85 ,  C07C2527/1206

摘要： A continuous process is provided for the production of 4'-isobutylacetophenone (4-IBAP) comprising feeding liquid hydrogen fluoride (HF) and an acetylating agent into an extractor-reactor to form a first, HF-rich phase containing the acetylating agent, feeding isobutylbenzene (IBB) to the extractor-reactor to form a second, IBB-rich phase which is contacted with said first, HF-rich phase in a manner such that the acetylating agent reacts with IBB to form 4-IBAP which is extracted into the first, HF-rich phase, and a light IBB-rich second phase containing the bulk of unreacted IBB, externally recycling said second, IBB-rich phase to the IBB feed point in combination with fresh IBB to make up for IBB consumed in the reaction and that and dissolved in the HF-rich phase, and withdrawing HF-rich phase containing 4-IBAP from the extractor-reactor.

摘要翻译： 提供了一种连续的方法，用于生产4'-异丁基苯乙酮（4-IBAP），包括将液体氟化氢（HF）和乙酰化剂进料到萃取 - 反应器中以形成含有乙酰化剂的第一富含HF的相， 异丁基苯（IBB），以形成富含IBB的第二相，其与所述第一富HF相接触，使得乙酰化剂与IBB反应形成4-IBAP，其被提取到 首先富含HF的相和富含IBB的第二相含有大部分未反应的IBB，外部将所述第二IBB富集相再循环到IBB进料点并与新鲜IBB组合以补偿在反应中消耗的IBB 并溶解在富HF相中，并从萃取器 - 反应器中取出含有富含HF的4-IBAP相。

公开(公告)号：US5185469A

公开(公告)日：1993-02-09

申请号：US748171

申请日：1991-08-23

申请人： Daniel D. Lindley ,  Timothy R. Ryan ,  Thomas A. Curtis ,  Edward M. De la Garza ,  Charles R. Hilton ,  Thomas M. Kenesson

发明人： Daniel D. Lindley ,  Timothy R. Ryan ,  Thomas A. Curtis ,  Edward M. De la Garza ,  Charles R. Hilton ,  Thomas M. Kenesson

IPC分类号： B01J27/12 ,  C07B61/00 ,  C07C2/70 ,  C07C15/24 ,  C07C45/46 ,  C07C45/85 ,  C07C49/76 ,  C07C51/60

CPC分类号： C07C45/85 ,  C07C2/70 ,  C07C45/46 ,  C07C51/60 ,  C07C2527/1206

摘要： A continuous process is disclosed for the acylation or alkylation of aromatic compounds in hydrogen fluoride. The aromatic compound is sufficiently insoluble in hydrogen fluoride that a two phase reaction medium forms. However, surprisingly, the product acylated or alkylated aromatic compound is soluble in hydrogen fluoride. The present invention particularly relates to use of a continuous, multi-stage process for carrying out the acylation or alkylation reaction. In the multi-stage process, the continuous phase can be either the hydrogen-fluoride rich phase or the aromatic compound-rich phase. The movement of the continuous phase relative to the non-continuous (dispersed) phase can be countercurrent or concurrent. The multi-stage process can be operated in a manner such that the aromatic compound feed to the reaction is entirely consumed or such that unreacted aromatic compound is recycled.

摘要翻译： 公开了在氟化氢中芳族化合物的酰化或烷基化的连续方法。 芳族化合物在形成两相反应介质的氟化氢中是完全不溶的。 然而，令人惊讶的是，产物酰化或烷基化芳族化合物可溶于氟化氢。 本发明特别涉及连续的多级方法用于进行酰化或烷基化反应的用途。 在多级方法中，连续相可以是富氟化氢相或富含芳香族化合物的相。 连续相相对于非连续（分散）相的移动可以是逆流或并行的。 多级方法可以以使得进入反应的芳香族化合物完全消耗或使得未反应的芳族化合物被再循环的方式进行操作。

公开(公告)号：US5357995A

公开(公告)日：1994-10-25

申请号：US32871

申请日：1993-03-18

申请人： Gerald V. King ,  Kenneth J. Busch ,  Thomas M. Kenesson

发明人： Gerald V. King ,  Kenneth J. Busch ,  Thomas M. Kenesson

IPC分类号： B01J4/02 ,  F16K1/52 ,  F17D3/01 ,  F16K31/04

CPC分类号： F16K1/52 ,  B01J4/02 ,  F17D3/01 ,  Y10T137/0357 ,  Y10T137/0424 ,  Y10T137/4245 ,  Y10T137/4343 ,  Y10T137/7759 ,  Y10T137/7761

摘要： A valve for metering a slurry includes a primary flow path for directing a continual flow of slurry through the valve, a valve stem which extends through the primary flow path and engages a passage in a valve seat for metering a portion of slurry passing through the primary flow path out through a second outlet in the valve. A portion of the valve stem which engages the valve seat passage is cut-away and when placed in communication with the primary flow path allows the flushing of accumulated solids through the valve seat passage to avoid persistent plugging of the valve.

摘要翻译： 用于计量浆料的阀包括用于引导浆料连续流过所述阀的主流路径，阀杆，其延伸穿过所述主流动路径并且与阀座中的通道接合，用于计量通过所述主流体的浆料的一部分 流动通道通过阀门中的第二个出口。 与阀座通道接合的阀杆的一部分被切除，并且当与主流路连通时允许通过阀座通道冲洗积聚的固体以避免阀的持续堵塞。

公开(公告)号：US5370146A

公开(公告)日：1994-12-06

申请号：US32875

申请日：1993-03-18

申请人： Gerald V. King ,  Thomas M. Kenesson

发明人： Gerald V. King ,  Thomas M. Kenesson

IPC分类号： F17D3/10 ,  F17D3/01 ,  B08B3/04 ,  B08B9/06

CPC分类号： F17D3/10 ,  Y10T137/0357 ,  Y10T137/043 ,  Y10T137/4245 ,  Y10T137/4259 ,  Y10T137/4336

摘要： A valve for obtaining a sample from a continuous flow of fluid includes a primary flow path for directing a continual flow of the fluid through the valve, a valve stem which engages a passage in a valve seat for metering a sample of fluid passing through the primary flow path out through a separate outlet passage in the valve. The valve further includes a passage separate from the primary flow path for injecting a purge gas into the sample outlet passage to remove any sample fluid contained in the outlet passage after the sample valve has been closed and before the sample container is taken off-line so as to avoid atmospheric emissions of the sample fluid.

摘要翻译： 用于从连续的流体流中获得样品的阀包括用于引导流体连续流过阀的主流路，与阀座中的通道接合的阀杆，用于计量通过主流体的流体样品 流通通过阀门中的独立出口通道。 阀还包括与主流路分开的通道，用于将样品气体注入到样品出口通道中，以在样品阀关闭之后并且在样品容器离线之前除去包含在出口通道中的任何样品流体 以避免样品流体的大气排放。