Pilot Scale Test to Treat High Concentration Gasification Wastewater Using Catalytic Oxidation and Aerobic Biological Fluid-Bed Combination Process

The gasification wastewater is a kind of typical organic industrial wastewater with high chemical oxygen demand （COD） and ammonia nitrogen, which could not be completely degraded by the traditional physical, chemical and biological method. So it is very important to find an effective treatment process. A combination process of catalytic oxidation with noble metal catalysts and aerobic biological fluid-bed packed with the new ultrastructure biological carriers, which was developed by ourselves, was investigated to treat the gasification wastewater. The pilot scale test with 0.5 m^3/h influent flow was carried out to investigate the performance of this new combination process. The results showed that the effluent COD was 84.02 mg/L, ammonia nitrogen was 14.15 mg/L, and total phenol was 0.20 mg/L, which could completely meet the Grade I of Wastewater Discharge Standard （GB8978-1996）, when the influent average COD was 5 564 mg/L, ammonia nitrogen was 237 mg/L, and total phenol was 1 100 mg/L. The two catalytic reactors could evidently improve the wastewater biodegradability, and the value of BOD5/COD （B/C） increased from 0.23 to 0.413 in the one-stage catalytic reactor and from 0. 273 to 0.421 in two-stage catalytic reactor. The further experiment results showed that the effluent quality of this new combination process could still meet the discharge standard, when the COD loading was 8.65 kg / （m^3· d）. Most of aromatic and heterocyclic compounds were degraded effectively in this combination process.     

轮胎罐式硫化外压控制系统的改造

主要介绍工程轮胎罐式硫化外温、外压手动调节改为自动调节,以改变外压手动调节波动大,外温不稳定的状况,提高工程轮胎罐式硫化外温、外压工艺参数的控制精度.     

硫铁化物自燃性的研究

储罐内壁铁的腐蚀产物之一Fe2O3与湿H2S发生反应生成不同形式的硫铁化物,硫铁化物的氧化放热是引起含硫油品储罐着火的主要原因。研究了在75℃条件下,硫化时间对Fe2O3硫化产物的生成及其自燃性的影响。通过X-射线衍射对硫化时间为6h、3d．6d以及17d条件下生成的硫铁化物成分进行了鉴定,并对3d和6d条件下的硫铁化物进行了定量分析。结果表明,在高温条件下,随着硫化时间的延长,有更多的FeS2和Fe3S4生成,并且Fe3S4不断向FeS2转化,自燃性增强,对储罐安全运行构成威胁。     

铁系高乙烯基聚丁二烯橡胶的性能研究

铁催化剂可获得高乙烯基（含量〉80％）聚丁二烯橡胶（HVBR）,其混炼行为良好,但必需填加适量的加工油,才能得到理想的硫化胶性能．HVBR硫化胶拉伸强度、撕裂强度以及热老化性能等与MVBR或SSBR相当,但其抗湿滑性能优于后者．HVBR／NR硫化胶不仅具有良好的强伸和撕裂性能,而且具有高抗湿滑性、低生热、低滚动阻力以及良好的耐磨性．     

低碳低硫钢中MnS析出行为分析

本文研究铝含量、硫含量、冷却速率等对低碳低硫钢中MnS夹杂物的成分、形貌和析出量的影响,并利用Scheil凝固方程及FactSage 6.1软件对MnS析出行为进行了理论计算。结果表明,冷却速率较低(5K/min)时,钢中夹杂物为双层结构,核心氧化物为Al2O3-SiO2和Al2O3-SiO2-MnO,MnS在氧化物表面局部或包裹析出;冷却速率较高(900K/min)时,钢中夹杂物主要为Al2O3-SiO2-MnO,高铝钢样中没有MnS析出,而低铝钢样中有极少量MnS析出;MnS在夹杂物上的析出率随着冷却速率的降低、钢中铝含量的减少(硫含量随之增加)而提高;复合氧化夹杂中的MnO+SiO2对MnS的析出影响较大,MnO+SiO2含量越高,MnS越容易在氧化物上析出;在低硫(w[S]0.0050%)条件下,MnS不能在液相中单独析出,但能在夹杂物上复合析出。     

Ca1—nSrnS：Cu^＋,Eu^2＋的合成与光谱特征

研究了Ｃｕ＾＋，Ｅｕ＾２＋共激活的Ｃａ１－ｎＳｒｎＳ的发光性质，基质组分Ｃａ／Ｓｒ摩尔比与荧光性质的关系，Ｃｕ＾＋和Ｅｕ＾２＋在纯ＣａＳ基质中的发射光谱分别位于４３０ｎｍ及６３０ｎｍ附近，随着基质中Ｓｒ含量的增加，红、蓝发射带都向绿区移动；当基质为纯ＳｒＳ时，红、蓝发射带复合为一个主峰在５１７ｎｍ、半宽度为８０ｎｍ的带谱，实验结果表明：Ｃａ１－ｎＳｒｎＳ：Ｃｕ＾２＋，Ｅｕ＾２＋是一种红、蓝发射峰值     

硫化过程的智能控制

讨论橡胶硫化过程的智能控制系统。该系统由过程数据库、模型库和知识库组成，充分利用计算机的丰富软、硬件资源，根据实测橡胶性能与硫化时间的关系，采用曲线拟合，运用经验公式及其参数估计递推法，在ＩＢＭ－ＰＣ机上实现优化控制。