Results 21 to 30 of about 138 (76)
Gongye shui chuli, 2004 自行制备了含膦酰基聚天冬氨酸。与PBTCA、HPA相比,含膦酰基聚天冬氨酸的阻CaCO3垢性能相当,具有比较突出的阻Ca3(PO4)2垢以及稳定水中Zn2+的能力。含膦酰基聚天冬氨酸与PBTCA、HPA等药剂复配得到的低磷药剂性能达到常用有机磷药剂的水平。
王吉龙, 王亭, 郦和生, 谭天伟
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HEDP、PBTCA、PAA对CaCO3垢抑制作用的电化学研究
Gongye shui chuli, 2021 采用线性扫描伏安法、计时电流法、电化学阻抗谱等电化学手段研究羟基亚乙基二膦酸（HEDP）、2-磷酸基-1，2，4-三羧酸丁烷（PBTCA）和聚丙烯酸（PAA）的阻垢效果以及利用剩余电流密度计算阻垢率方法的可行性。结果表明，利用剩余电流密度计算得到的阻垢率与电化学阻抗法得到的阻垢率结果相近，阻垢效果均为PBTCA>HEDP>PAA。机理探究结果表明，CaCO3垢通过电沉积过程在钛合金电极表面形成文石晶体，阻垢剂的加入可通过晶体畸变作用抑制文石晶体的正常生长，使其转化为不稳定的球霰石晶体 ...
张可桂 +6 more
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Crystallization of CaCO3 in Aqueous Solutions with Extremely High Concentrations of NaCl
, 2019 The effect of NaCl at extremely high concentrations from 3.5 to 14 wt. % on the crystallization of CaCO3 was investigated in depth. The static test experiment verified that the Ca2+ retention efficiency (η) of NaCl on CaCO3 scale increased from 31.06%
Zhihao Chen +6 more
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Gongye shui chuli, 2019 脱硫废水中残留的水质稳定剂是影响其回用的重要因素。选用ClO2为氧化剂，PAC为絮凝剂，以TP、OP去除率为指标，研究了二氧化氯投加量、PAC投加量、氧化时间、pH和温度对水中两种常见水质稳定剂（PBTCA、HEDP）去除效果的影响。结果表明，当二氧化氯投加量为9 mg/L，PAC投加量为180 mg/L，pH为7.5，温度为40℃，氧化时间为1 h时，水质稳定剂的去除效果最佳；PBTCA比HEDP更易被二氧化氯氧化降解。
霍立敬 +3 more
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Screening Experiments and Static Scale Inhibition Performance Evaluation of Scale Inhibitors for Synchronous Condenser Circulating Cooling Water [PDF]
ObjectivesDuring the operation of the circulating cooling water of the regulating camera, the concentration effect leads to the scaling of the heat exchanger and the cooling water packing, which affects the safe and stable operation of the regulating ...
XIA Zhonglin +7 more
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Gongye shui chuli, 2000 用加晶种于过饱和溶液中的方法测定了CaCO3晶体结晶生长的动力学过程,得到了不加阻垢剂及加阻垢剂两种条件下的结晶生长反应速率常数。结果表明,PBTCA及同济大学测试中心研制的丙烯酸马来酸共聚物(AA—MA)能明显地阻止溶液中CaCO3在晶种表面的结晶生长,研究发现,阻垢的机理主要是阻垢剂对CaCO3晶种表面具有吸附作用,从而抑制了CaCO3的结晶生长,这种吸附作用符合Langmuir等温吸附特征,并且CaCO3晶体对PBTCA的吸附属于单分子化学吸附,PBTCA吸附于微晶表面的活性增长点。
朱志良 +3 more
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, 2019 Background Electrochemical energy is a key factor of biosynthesis, and is necessary for the reduction or assimilation of substrates such as CO2. Previous microbial electrosynthesis (MES) research mainly utilized naturally electroactive microbes to ...
Junsong Wang +5 more
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Gongye shui chuli, 2004 对杀菌剂优氯净、1427、有机溴、活性溴和ClO2与有机磷PBTCA,ATMP,HEDP,EDTMPS和HPA的相容性在实验室进行了研究。实验结果表明,氧化型杀菌剂对有机磷有分解作用,其影响顺序为优氯净>有机溴>ClO2 >活性溴,亚甲基型有机磷药剂几乎不抗优氯净的分解,分解率达80%左右;非氧化型杀菌剂1427对PBTCA和HPA有一定的分解率,对其他有机磷影响不大。氧化型杀菌剂能使有机磷的缓蚀性能增加,但降低有机磷除PBTCA外的阻垢效果 ...
成敏, 郦和生
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Study on the Corrosion Behavior and Inhibitor Protection in Reclaimed Water Pipelines of Steel Enterprises [PDF]
Cailiao BaohuFor the corrosion problem within the reclaimed water transport pipelines of a steel company in Hunan, water samples from typical reclaimed water sources were collected for water quality analysis.
LIU Yucheng, WU Wei, DU Zaihui, LI Ren, RUAN Min, HE Fang, YAN Xiaozhong
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, 2018 In this paper, experimental techniques have been developed to prepare and characterize chemical agents for augmenting injectivity in low permeability reservoirs.
Min Zhao, Xiutai Zhao, Daoyong Yang
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