阻燃剂Cyagard RF-1的制备及结构表征

Cyagard RF-1[化学名亚乙基双三(2-氰乙基)溴化磷]是目前应用广泛的耐热高温阻燃剂,对聚烯烃具有较好的阻燃作用。以绿色环保的四羟甲基硫酸磷(THPS)为原料,合成高纯度的三(2-腈乙基)膦,再与1,2-二溴乙烷在水中反应制取目标产物亚乙基双三(2-氰乙基)溴化磷(ETPB)。并用FTIR、NMR、TG-DTA等对产物结构进行了表征。     

THPS与Ⅱ型噁唑烷鞣性研究

通过测定两种鞣剂,即噁唑烷zE和四羟甲基膦盐THPS在ZE-THPS鞣制顺序用量不同时鞣得革的收缩温度的变化,研究THPS、ZE的鞣性,同时也考察了不同的加脂剂对该结合鞣效果的影响.结果显示:ZE和THPS间能形成良好的协同效应,由此产生的Tanning Matrix可以和胶原纤维很好结合:加脂剂对成革的耐湿热稳定性影响较大,可以破坏两种鞣剂形成的Matrix.     

四羟甲基硫酸鏻的合成及测定研究

以黄磷、锌粉、硫酸和甲醛为原料,成功合成了四羟甲基硫酸鏻(THPS),详细探讨了不同合成条件对THPS产率的影响,并通过正交实验确定最佳合成工艺为:黄磷∶锌粉∶硫酸∶甲醛=1∶2.5∶7.5∶5(摩尔比),反应温度为85℃,反应时间为6 h。建立了测定其活性物含量的离子交换法,测得THPS的含量为79.20%。用36%乙酸对产品进行重结晶,成功得到了THPS针状晶体。     

四羟甲基硫酸鳞的合成及测定研究

以黄磷、锌粉、硫酸和甲醛为原料，成功合成了四羟甲基硫酸鳞（THIS），详细探讨了不同合成条件对THIS产率的影响，并通过正交实验确定最佳合成工艺为：黄磷：锌粉：硫酸：甲醛=1：2．5：7．5：5（摩尔比），反应温度为85℃，反应时间为6h。建立了测定其活性物含量的离子交换法，测得THIS的含量为79．20％。用36％乙酸对产品进行重结晶，成功得到了THIS针状晶体。     

海上聚驱油田硫酸盐还原菌治理研究

某渤海聚驱油田污水处理系统硫酸盐还原菌(SRB)问题日趋严重,本文对该油田SRB超标原因进行了分析,发现含聚污水与油田在用杀菌剂不配伍、SRB在流程中大量滋生、SRB对杀菌剂产生抗药性是导致油田SRB超标的主要原因。四羟甲基硫酸磷与渤海某聚驱油田含聚污水配伍性好,投加浓度30 mg/L可将含聚污水SRB含量控制在25个/毫升,为海上聚驱油田污水处理提供了技术支持和实践经验。     

几种醛类鞣剂及其成品革中甲醛含量探析

甲醛通常用作有机合成鞣剂的原材料,由于其对人类及别的生物体的毒性,因此其使用受到限制,通过对THPC,THPS,噁唑烷A和噁唑烷E及成品革的甲醛含量进行测定,考察了这几种无铬鞣剂的使用条件.     

环保型试剂THPS去除油罐中FeS的研究进展

原油储罐中沉积的具有自燃性的硫化亚铁,给炼油工业的安全带来了极大的隐患,THPS能有效去除硫化亚铁防止其自燃。本文综述了油罐中硫化亚铁生成及自燃的机理,THPS的结构和性能,以及THPS对硫化氢和硫化亚铁的去除效果。     

The Biocidal Efficacy of Tetrakis-hydroxymethyl Phosphonium Sulfate (THPS) Based Biocides on Oil Pipeline PigRuns Liquid Biofilms

The biocidal efficacy of THPS on oil pipeline biofilms was determined by direct MPN counts of SRB and APB after incubations at various concentrations of THPS for 14 days and also by its inhibitory effects on functional group activities of some oil field microorganisms. THPS was unable to drastically inhibit SRB growth at lower concentrations (0.1–0.3%) but its selective action on the activities of the hNRB and so-NRB further inhibits SRB growth and prevents sulfide formation at lower concentrations (0.2–0.3%). It was also observed that sulfide formation occurred at relatively high concentration of SRB (>10⁶ cells/mL) at 0.1% THPS concentration.     

Effects of d-Phenylalanine as a biocide enhancer of THPS against the microbiologically influenced corrosion of C1018 carbon steel

Microbiologically influenced corrosion(MIC) is caused by biofilms such as those of sulfate reducing bacteria(SRB). To mitigate MIC, biocide treatment is often needed. Tetrakis(hydroxymethyl) phosphonium sulfate(THPS) is an environmentally friendly biocide that is often used in the oil and gas industry. However, its prolonged use leads to biocide resistance, leading to dosage escalation. A biocide enhancer can be used to slow down the trend. In recent years, d-amino acids have been investigated as an enhancer for THPS and other biocides. Published works used anaerobic vials and flow devices, which could not reveal the real-time changes of the biocide treatment on corrosion. In this work, it was proven that the biocide enhancement effects of d-Phenylalanine(d-Phe) on THPS against the Desulfovibrio vulgaris biofilm on C1018 carbon steels could be assessed in real time using linear polarization resistance and electrochemical impedance spectroscopy to collaborate sessile cell count, weight loss and pitting depth data. The results showed that 500 ppm(w/w) d-Phe effectively enhanced 80 ppm THPS against MIC by the D. vulgaris(a corrosive SRB) biofilm. The sessile cell count and pit depth were all reduced with the enhancement of d-Phe.     

THPS溶解油罐中的硫化亚铁

用THPS(四羟甲基硫酸磷)配合氯化铵清除油罐中沉积的硫化亚铁,介绍了THPS在溶解硫化亚铁 方面的实验结果,包括THPS与氯化铵的质量配比,溶解液的浓度和酸度,以及反应温度、反应时间。结果表明, THPS与氯化铵质量比为6.5∶0.6,温度为80 ℃,pH=5,反应时间为8h时,THPS溶解硫化亚铁的效果最好。溶 解液质量分数为14.0%时,硫化亚铁溶解率可达到92.50%。