全氢法高压加氢工艺生产优质环烷基橡胶油产品

全氢法高压加氢工艺生产优质环烷基橡胶油产品     

环烷基馏分油加氢工艺生产变压器油的研究

本文以绥中36-1常二线馏分油为原料,对变压器油加氢工艺的规律性进行了研究,实验表明,绥中36-1常二线馏分油芳烃含量高,适合采用加氢工艺;随着反应温度的提高,产品的折光和密度均降低,精制程度加深;提高反应空速,增大处理量,精制程度下降;提高反应压力,其反应速度也随之加快,脱硫脱氮效果加强,能提高精制效果。     

中海油减压馏分油生产橡胶油工艺研究

以中海油绥中36-1减二线馏分油为原料,通过高压加氢工艺可生产优质橡胶油。该馏分油芳烃、硫、氮含量高,粘度大,通过高压加氢处理-临氢降凝-加氢后精制三段串联的全氢型流程能够生产出品质优良的橡胶油。主产品收率较高,达85.3%,芳烃含量极低,CN值高达57.6%,产品性质达到国内外先进水平,且部分性质优于同类产品。该填充油制备的SBS充油胶各项物理性能均达到或超过参比充油胶,并满足某充油胶优级品指标。     

环烷基油——理想的橡胶增塑剂

在欧洲,对芳烃抽提油使用的限制已经成为轮胎和橡胶行业生产商的热门话题。出于环保和健康的考虑,选择合适的增塑剂替代品种已经势在必行。环烷基油的技术和环保优势因而得以体现。尼纳斯石油是世界上最大的环烷基油公司,对其产品在橡胶生产中的应用做了深入的研究和对比。     

中海油减三线馏分油生产橡胶油工艺研究

中海油绥中36-1减三线馏分油,芳烃、硫、氮含量高,粘度大,是典型的环烷基油。通过一段溶剂精制工艺可生产CA为10.0%的环保橡胶油,产品性质良好,环保性能佳,达到国内同类产品水平。通过加氢处理-临氢降凝-补充后精制的三段高压加氢工艺可生产性质优良的SBS橡胶填充油。主产品收率较高,可达83.9%,CN值高达53.9%,芳烃含量极低,产品性质达到国内先进水平,且部分性质优于同类产品,应有良好的使用性能。     

苯乙烯-丁二烯-苯乙烯嵌段共聚物的加氢反应及产品性能

讨论了温度和压力在苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)加氢过程中对聚丁二烯链段中乙烯基及顺式-1,4-结构和反式-1,4-结构加氢速率的影响,比较了不同反应器对加氢反应的影响,考察了加氢前后SBS相对分子质量及其分布、动态力学性能、形态及力学性能的变化.结果表明,当反应温度为50～70 ℃和压力大于2.0 MPa...     

充油SEBS/PP热塑性弹性体的制备及性能研究

采用HAAKE转矩流变仪制备了充油苯乙烯-乙烯-丁二烯-苯乙烯嵌段共聚物/聚丙烯(SEBS/PP)热塑性弹性体,利用热重分析(TG)、差示扫描量热法(DSC)等研究了填充油对SEBS/PP加工性能、热稳定性和力学性能的影响,并考察了该充油SEBS/PP中PP的结晶行为。结果表明:填充油的加入可以明显改善SEBS/PP的加工性能。在各种充油SEBS/PP体系中,添加了石蜡油KP6030的SEBS/PP体系具有最优综合力学性能,而且该体系的热分解温度最高、失重率最低、热稳定性能最好。另外在充油SEBS/PP体系中,PP的结晶温度降低、结晶度基本不变、结晶速率加快。     

苯乙烯类热塑性橡胶的特性及应用

叙述苯乙烯－二烯烃嵌段共聚物的结构和性能特点、生产现状和发展历史，介绍典型品种性能，以及典型产品性能和主要用途。     

环烷基油——一种理想的橡胶增塑剂

在欧洲,对芳烃油使用的限制已经成为轮胎和橡胶制品生产商的热门话题。出于环保和健康考虑。选择合适的替代增塑剂已经势在必行。环烷基油的技术和环保优势从而得以体现。尼纳斯石油是世界上最大的环烷基油公司。文中就其产品在橡胶加工中的应用作了深入的研究和对比。     

白油加氢脱芳烃催化剂的制备与表征

为解决高压加氢润滑油基础油存在的光和热稳定性差,针对环烷基油具有的黏度高、分子量大和稠环结构多的特点,对加氢润滑油基础油深度加氢脱芳烃催化剂的制备与表征进行研究,研制孔结构合理、催化剂活性高、选择性和稳定性好的新型润滑油基础油深度加氢精制催化剂.对环烷基油减二线轻质润滑油、KN4006、KN4010和150BS深度加氢...     

环烷基润滑油加氢催化剂补硫过程分析及优化

针对环烷基油高氮、低硫的特点,通过对硫化钨和硫化镍在氢气中相平衡态所需硫化氢浓度的理论分析,对反应器入口所需补硫量作了详细的阐述,得出了最经济的补充注硫量。装置近4年的应用结果表明,催化剂活性下降缓慢,节约了大量的硫化剂,取得了较好的效果。     

芳香烃型橡胶填充油的研制

以N-甲基吡咯烷酮和糠醛为溶剂,对新疆混合原油的减压馏分油进行了精制,并对此抽出油进行注水、降温沉降研究及芳香烃型橡胶填充油的放大制备试验研究。结果表明,在沉降温度50℃、注水量2%、沉降时间40 m in的优化工艺条件下,可使抽出油芳香烃质量分数达到80%以上。以此芳香烃型橡胶填充油进行丁苯橡胶的充油试验,其充油丁苯橡胶主要性能良好,300%定伸应力、拉伸强度及扯断伸长率等性能更为优异。     

Natural rubber compositions with the partial/total replacement of carbon black/naphthenic oil by renewable additives: Rice husk ash and cashew nut oil

The aim of this work was to use additives from renewable sources to develop an elastomeric formulation with reduced environmental impact and lower rolling resistance. Twelve compositions containing various proportions of rice husk ash—RHA (20, 40, 60, 80, and 100 phr to replace carbon black [CB]) and a combination of RHA with CB (30CB/10RHA and 20CB/20RHA) using cashew nut oil (3 phr) as a processing aid were prepared and characterized based upon their rheometric and physical–mechanical properties. The combined use of CB and RHA after the silanization process (30CB/10RHAS) increased wet grip by 3.6%, reduced rolling resistance by 17.3%, and improved abrasion resistance by 7.3%. Therefore, the use of these alternative raw materials represents an important contribution for the technological development of rubber compounds, with a combination of durability, safety, economy, and reduction in CO₂ emissions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 48314.     

丁腈橡胶的催化加氢反应

以三(三苯基磷)氯化铑(简称Rh)为催化剂、氯苯为溶剂,在高压釜中对丁腈橡胶(NBR)进行加氢反应,制得了氢化丁腈橡胶(HNBR),考察了Rh/NBR(质量比)、胶液质量分数、氢气压力、反应温度和反应时间对加氢度的影响.结果表明,在Rh/NBR为150×10-6～200×10-6、胶液质量分数为4％ ～6％、氢气压力为...     

煤焦油加氢尾油的循环加氢工艺研究

煤焦油通过一次加氢会产出大量的未转化油——加氢尾油,为了提高煤焦油加氢轻质油总转化率,文中借鉴石油基加氢尾油的处理方法,对煤焦油加氢尾油循环加氢工艺进行了初步探讨。在一定循环油切割点和循环比下分析了裂化剂床层温度、反应压力和氢油体积比对尾油循环加氢总转化率的影响;并以汽柴油收率为目标,对裂化剂床层温度和反应压力2个因素进行了优化,获得了优化工艺条件。     

丁苯橡胶充填用环保芳烃油的研制

利用扬子公司范围内的重质物料进行了原料的筛选,提出一种生产环保芳烃油的新型工艺路线,并对环保芳烃油进行了分析及充填橡胶评价。结果表明,与进口典型环保芳烃油相比,生产的环保芳烃油具有密度、黏度、折光偏低的特点,充填橡胶的性能完全达到了指标要求。新型的环保芳烃油完全可替代丁苯橡胶原有非环保高芳填充油。     

Zn-Ni-Al-LDHs催化剂的制备及其催化酯化高酸原油脱酸

以尿素为沉淀剂,采用均相沉淀法制备了Zn-Ni-Al-LDHs催化材料。以450 ℃焙烧6 h的Zn-Ni-Al-LDHs为催化剂,研究高酸原油酯化脱酸效果。结果表明,在高酸原油250 mL、催化剂用量1.23 g、反应时间6 h、反应温度200 ℃和醇油体积比0.04条件下,可将酸度5.81 mg-KOH·g^-1的原油降至0.21 mg-KOH·g^-1,减缓环烷酸对设备及管线的腐蚀。     

Noncatalytic hydrogenation of natural rubber latex

Hydrogenation is an important method of chemical modification, which improves the physical, chemical, and thermal properties of diene‐based elastomers. Natural rubber latex (NRL) could be hydrogenated to a strictly alternating ethylene–propylene copolymer using diimide generated in an in situ system. The diimide generated using the in situ technique for hydrogenation of NRL was accomplished by thermolysis of p‐toluenesulfonyl hydrazide (TSH). A molar ratio of TSH to double bonds equal to 2 : 1 was found to be the optimum ratio to provide a high percentage of hydrogenation. 95% Degree of saturation of NRL was achieved in o‐xylene. Hydrogenated products are characterized by FTIR and NMR spectroscopy. The thermal stability of hydrogenated rubber was improved as shown from the results of thermogravimetric analysis. From the differential scanning calorimetry measurement, the glass transition temperature of the hydrogenated product did not appear to change. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2885–2895, 2007     

Diimide hydrogenation of natural rubber latex

Hydrogenation is one important method of chemical modification, which improves the physical, chemical and thermal properties of diene‐based elastomers. Natural rubber latex (NRL) could be hydrogenated to a strictly alternating ethylene‐propylene copolymer using a diimide reduction system. The diimide reduction technique of NRL was accomplished by using hydrazine hydrate/hydrogen peroxide and Cu²⁺ as catalyst. The hydrogenated products are characterized by FTIR and NMR spectroscopy. It has been found that cupric acetate is a highly active catalyst for the reaction and the addition of a controlled amount of gelatin demonstrated a beneficial effect on the degree of hydrogenation, whereas, sodium dodecyl sulfate (SDS) acted as a stabilizer of the latex particle in the reaction system and reduced the degree of hydrogenation. In the presence of SDS, a longer reaction time and a higher amount of hydrazine hydrate was required for hydrogenation of NRL. Gel formation during hydrogenation does not significantly affect the degree of hydrogenation. Gel inhibitors such as hydroquinone also decrease the degree of hydrogenation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007