6000型包装机主电机制动系统的改进

对6000型包装机主电机电磁制动中存在问题进行了分析,并给出了解决方法:采用2台变频器分别驱动6000型主电机和封签电机;采用英国CD公司的GPD-2402变频器和24Ω/1500kW的制动能耗电阻,使主电机电磁制动改为变频能耗制动。改进后不仅满足了生产工艺要求,而且主电机可用同规格的国产电机代替,大大降低了维修费用。     

等高双抱杆对抬滑移法

等高双抱杆对抬滑移法付桂生（江西第二化肥厂）关键词等高双抱杆吊装填料塔符号说明Ｇ———每根抱杆重量，Ｇ＝６ｔ；Ｋ———动载荷系数，取Ｋ＝１．１；Ｋ′———不均衡系数，取Ｋ′＝１１；Ｋ１———滑车组机械利益系数；Ｋ２———安全系数，Ｋ２＝３５；Ｌ...     

喷射式并流填料塔板流体力学和传质性能

提出一种新型高效塔板——喷射式并流填料塔板（ＪＣＰＴ），介绍１２００ｍｍ冷模塔流体力学实验结果和２００ｍｍ热模塔传质效率，给出了适用于工业设计性能参数的计算关联式。通过与新垂直筛板（ＮＶＳＴ）的比较表明，ＪＣＰＴ具有雾沫夹带小、处理能力大、塔板效率高等特点，是一种具有广泛应用前景的新型高效塔板。     

高档镜面抛光铝型材生产工艺研究

研究了高档镜面抛光铝型材生产过程的主要控制要素,确定了铸碇、挤压、机械抛光、化学抛光和氧化封孔生产工艺及挤压模具设计制造技术要求,获得了表面质量高的高档镜面抛光铝型材。     

Evaluating the quality of project planning: a model and field results

Faulty planning will result in project failure, whereas high-quality project planning increases the project's chances of success. The paper reports on the successful development and implementation of a model aimed at evaluating the quality of project planning. The model is based on both the abilities required of the project manager and the organizational support required for a proper project management infrastructure. The model was validated and applied by 282 project managers in nine organizations, where strong and weak planning processes were identified and analysed.     

Detection of adulteration of locust bean gum with guar gum by capillary electrophoresis and polarized light microscopy

Capillary electrophoresis (CE) and polarized light microscopy (PLM) were utilized in the detection of the adulteration of locust bean gum with guar gum. For CE analyses, standards of locust bean and guar gums were extracted with 30% CH₃CN, removing the residual proteins from the gum matrix. A 8.75 mM NaH₂PO₄-20.6 mM Na₂B₄O₇ buffer, pH 9, was used to separate these proteins and to identify marker proteins that were present in the guar gum. These markers did not co-migrate with components in the extracts of mechanically processed locust bean gum, and are used as indicators of adulteration. Using PLM with toluidine blue and iodine staining techniques, unadulterated locust bean gum samples were distinguished from mixed samples through the differential staining of components in locust bean versus guar and tara gums. These experiments in the use of CE and PLM provide orthogonal and complementary methods for the verification of 'true' positives and the elimination of 'false' positives.     

大型减压塔新型内构件的设计

茂名石油化工公司第四套常减压蒸馏装置减压塔设计中通过一系列技术创新,成功地解决了大型塔设备的一些技术难点,使该塔的设计达到了先进水平.     

哒螨酮微胶囊剂的制备研究

本研究选用杀虫杀螨剂哒螨酮为芯材，以癸二酰氯、乙二醇聚合生成的聚酯为囊皮，制备哒螨酮微胶囊；工艺条件为聚合温度30-50℃，搅拌速率500r/min；实验证明单体总用量、搅拌速率、聚合温度影响微胶囊剂的外观及粒径。     

无油墨印刷包装材料激光制版的研究

本文介绍了生产具有自主知识产权的大尺寸激光动感像素全息的设备及配套工艺.可用于生产防伪塑料薄膜,纸和其他包装材料.我们成功地解决了全息行业宽幅模压生产所需的大幅面整版制版技术问题,弥补了因小单元图案拼版而引起的干涉条纹失真,转移效率低,拼缝等缺陷,也解决了宽幅母版制作及包装用大幅面图案制作中的实用化工艺.