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1. 发明专利

JP2009007330A Method for producing bisphenol a having extended practical life in crystallization 审中-公开
标题翻译：在结晶中生产具有扩展实践生活的双酚A的方法
公开(公告)号：JP2009007330A
公开(公告)日：2009-01-15
申请号：JP2008123022
申请日：2008-05-09
申请人： Bayer Materialscience Ag , バイエル・マテリアルサイエンス・アクチェンゲゼルシャフトBayer MaterialScience AG
发明人： BLASCHKE ULRICH , AUDENAERT RAYMOUND , GEERS JEROEN , DE KOCK PHILIP , SALEMBIER PAUL , PETEIN DIRK
IPC分类号： C07C37/84 , C07C37/20 , C07C37/74 , C07C37/86 , C07C39/16
CPC分类号： C07C37/20 , C07C37/84 , C07C39/16
摘要： PROBLEM TO BE SOLVED: To provide an operating method for eliminating deposition in the production/purification process of bisphenol A and achieving the maximum efficiency.
SOLUTION: This method for producing the bisphenol A having
摘要翻译：要解决的问题：提供消除双酚A的生产/净化过程中的沉积的操作方法并实现最大效率。解决方案：通过在结晶器中进行含有双酚A，微量成分和苯酚的产物混合物的悬浮结晶以及泵输送来提供生产具有<15重量％酚含量的双酚A的该方法产品混合物通过热交换器。通过沉积（结垢，即热交换器表面上的结晶和沉积），热交换器两端的压力差从0.5巴增加到3巴。结果是，通过连续地增加泵速来抵消结晶器中污垢增加的流量减少，并且以维持泵的电流消耗的方式调节泵速度，使得泵的速度波动变为±5％以下。版权所有（C）2009，JPO＆INPIT

2. 发明专利

DE102007021935A1 未知
公开(公告)号：DE102007021935A1
公开(公告)日：2008-11-20
申请号：DE102007021935
申请日：2007-05-10
申请人： BAYER MATERIALSCIENCE AG
发明人： BLASCHKE ULRICH , AUDENAERT RAYMOND , GEERS JEROEN , KOCK PHILIP DE , SALEMBIER PAUL , PETEIN DIRK
IPC分类号： C07C37/84 , C07C37/70 , C07C39/16
摘要： Bisphenol A production comprises reacting phenol and acetone in the presence of a sulfonic acid ion exchanger and a sulfur-containing co-catalyst, subjecting product mixture containing bisphenol A-phenol adduct to continuous suspension crystallization in crystallizer(s), separating crystals of bisphenol A-phenol adduct by solid/liquid separation, and removing phenol from crystals of bisphenol A-phenol adduct by distillation and/or desorption. The current consumption of pump(s) is maintained so that current consumption fluctuates by maximum of+- 5%. Bisphenol A production comprises reacting phenol and acetone in the presence of a sulfonic acid ion exchanger and a sulfur-containing co-catalyst to form a product mixture containing bisphenol A-phenol adduct, subjecting product mixture containing bisphenol A-phenol adduct to continuous suspension crystallization in crystallizer(s) to obtain crystals of bisphenol A-phenol adduct, separating crystals of bisphenol A-phenol adduct by solid/liquid separation, and removing phenol from crystals of bisphenol A-phenol adduct by distillation and/or desorption to obtain bisphenol A. The crystallizers comprise heat exchanger(s) for cooling and pump(s) pumping the suspension contained in crystallizer(s) through heat exchanger(s). The current consumption of pump(s) is maintained such that the current consumption fluctuates by a maximum of+- 5%. The speed of pump(s) is increased as the pressure loss across heat exchanger rises.

3. 发明专利

SG148112A1 PROCESS FOR PRODUCING BISPHENOL A WITH AN EXTENDED SERVICE LIFE IN THE CRYSTALLISATION 未知
公开(公告)号：SG148112A1
公开(公告)日：2008-12-31
申请号：SG2008035776
申请日：2008-05-09
申请人： BAYER MATERIALSCIENCE AG
发明人： BLASCHKE DR ULRICH , AUDENAERT DR RAYMOND , GEERS JEROEN , KOCK PHILIP DE , SALEMBIER PAUL , PETEIN DIRK
摘要： Process for Producing Bisphenol A with an Extended Service Life in the Crystallisation The invention describes a process for producing bisphenol with a content of less than 15 wt.% of phenol, wherein a suspension crystallisation of a product mixture containing bisphenol A, minor components and phenol is performed in a crystalliser, the product mixture being pumped through a heat exchanger. Due to deposition (fouling, i.e. crystallisation and deposition on the surface of the heat exchangers) in the heat exchanger, the pressure difference increases from 0.5 to 3 bar across the heat exchanger. The resulting reduced flow rate, which would lead to increased fouling in the crystalliser, is offset by continuously increasing the speed of the pump, the pump speed being regulated in such a way that the current consumption of the pump is maintained such that it fluctuates by a maximum of

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