会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • PROCESS OF PRODUCING HIGH PURITY TEREPHTHALIC ACID
    • 生产高纯度过敏酸的方法
    • US20090018361A1
    • 2009-01-15
    • US11909369
    • 2006-03-14
    • Motoki NumataIsao Takahashi
    • Motoki NumataIsao Takahashi
    • C07C51/16
    • C07C51/47C07C51/265C07C63/26C07C63/04
    • A problem of the invention is to provide a process of producing high purity terephthalic acid by selectively recovering p-toluic acid in wastewater which has hitherto been discarded and using it as a raw material of terephthalic acid.The invention is concerned with a process of producing high purity terephthalic acid, which is characterized in that a p-toluic acid recovery step of recovering p-toluic acid from a primary mother liquor and feeding it into an oxidation reaction step includes the following respective steps of: (I) an adsorption step of feeding, as a liquid to be treated, the primary mother liquor or a secondary mother liquor obtained by subjecting the primary mother liquor as cooled to solid-liquid separation into an adsorption tower filled with an adsorbing agent in which the breakthrough time of p-toluic acid is longer than the breakthrough time of benzoic acid to adsorb p-toluic acid and benzoic acid in the liquid to be treated to the adsorbing agent, (II) a feed stopping step of stopping the feed of the liquid to be treated into the adsorption tower at an arbitrary point of time of exceeding the breakthrough time of benzoic acid, (III) a desorption step of feeding a desorbing agent into the adsorption tower to desorb adsorbed p-toluic acid, and (IV) a circulation step of feeding p-toluic acid contained in the desorbing agent flown out from the adsorption tower into the oxidation reaction step.
    • 本发明的一个问题是提供一种通过选择性回收废弃物中的对甲苯甲酸来生产高纯度对苯二甲酸的方法,该方法迄今已被丢弃并将其用作对苯二甲酸的原料。 本发明涉及生产高纯度对苯二甲酸的方法,其特征在于从初级母液中回收对甲苯甲酸并将其送入氧化反应步骤的对甲苯甲酸回收步骤包括以下各步骤 (I)作为待处理液体的原料母液或二次母液进行吸附的吸附工序,所述初级母液或二次母液通过将初级母液冷却至固液分离得到填充有吸附剂的吸附塔 其中对甲苯甲酸的突破时间长于苯甲酸在待处理液体中吸附对甲苯甲酸和苯甲酸至吸附剂的穿透时间,(II)停止进料的进料停止步骤 在超过苯甲酸穿透时间的任意时间点待处理的液体进入吸附塔,(III)将解吸剂加入吸附剂的解吸步骤 离子塔以脱附吸附的对甲苯甲酸,以及(IV)将从吸附塔出来的脱附剂中所含的对甲苯甲酸进料到氧化反应步骤的循环步骤。
    • 6. 发明授权
    • Drying method of and drying apparatus for powder and granular material
    • 粉末和颗粒材料的干燥方法和干燥装置
    • US5341577A
    • 1994-08-30
    • US94437
    • 1993-07-21
    • Iori HashimotoMotoki NumataJun NishizawaTomiyuki Kamada
    • Iori HashimotoMotoki NumataJun NishizawaTomiyuki Kamada
    • F26B17/00F26B3/00F26B11/02F26B21/10F26B23/02F26B25/22
    • F26B11/028F26B23/02F26B25/22F26B3/00
    • Carbon black is introduced into a granulating machine 3 through an inlet 1 and water is introduced into the same through an inlet 2 to prepare granulated carbon black, which is fed to a cylindrical rotary type dryer 5 through a line 4 and is dried. A product of carbon black is discharged through a line 6. Temperature in the dryer 5 is measured by a plurality of thermometers 10. A combustion control device performs the arithmetical processing of temperature data to obtain the initial point at which the state of the carbon black is changed from the constant rate of drying to the falling rate of drying. The control device controls each flow rate of fuel supplied from each line 7 or 8 to burners 9 for the front and rear half portions of the dryer by using the critical point and the temperature of the carbon black at the outlet of the dryer, whereby a temperature profile for the carbon black in the dryer 5 can be made stable for a long time.
    • 将炭黑通过入口1引入造粒机3中,并通过入口2将水引入其中,以制备造粒炭黑,其通过管线4供给到圆筒形旋转式干燥器5中并干燥。 炭黑的产物通过管线6排出。干燥机5中的温度由多个温度计10测量。燃烧控制装置进行温度数据的算术处理以获得碳黑状态的初始点 从恒定的干燥速率变化到干燥的下降率。 控制装置通过使用干燥器出口处的炭黑的临界点和温度来控制从每条管线7或8向干燥机的前半部分和后半部分的燃烧器9供应的燃料的每个流量,由此 干燥机5中的炭黑的温度曲线可以长时间稳定。