共查询到20条相似文献,搜索用时 46 毫秒
1.
2.
本文介绍了一些现场实例来说明炼油厂生产过程中的油泄漏入冷却水系统中后引起的问题以及可以用来扭转局面的一些措施。为了保证冷却水中油的浓度低于10mg/L,应该定期进行监测。水中油的浓度高于10mg/L,能导致灾难性的污垢和腐蚀问题,文中介绍的清洗方案可以作为今后处理漏油的基础。这个方案包括两大部分:首先进行机械清洗,然后用表面活性剂进行化学清洗。用于收集海上钻井平台和远洋油轮漏油的集油剂在冷却水系统发生漏油时也可能得到应用。 相似文献
3.
清水泵在我们氯碱行业中是一种应用广泛的输液设备,但是其轴密封漏油问题也是企业长期难以应付的头疼事。目前新型IS型水泵,也没彻底解决此问题。水泵轴密封漏油给生产和管理带来的主要影响是:1.轴油箱润滑油沿轴向泄漏,造成油位下降,若不及时补油,会使轴承发热、损坏轴承;2.轴油箱润滑油泄漏。 相似文献
4.
5.
笔者以海上漏油为切入点,在简要介绍国内外石油泄漏现状的基础上,对存在于我国当前石油泄漏防治机制实施过程中的问题进行了分析,最后提出了解决我国当前石油泄漏问题的策略。 相似文献
6.
张立新 《中国石油和化工标准与质量》2019,(2):19-21
齿轮减速机出现漏油是影响机械运行最关键的因素之一。在实际生产运行过程中,减速机漏油直接威胁到机械设备的安全使用和生产的顺利进行,那么对于齿轮减速机的漏油问题的处理非常必要。本文介绍了齿轮减速机的漏油部位与漏油原因,并且根据这些原因给出了处理措施。 相似文献
7.
8.
《精细化工原料及中间体》2018,(7)
正一、成果简介近年来,随着人类活动的日益频繁,由油田泄漏、油船漏油、输油管路破裂等一系列事故及含油废水的排放造成了河流、海洋的严重污染,带来了不可估量的生态灾难和经济损失。 相似文献
9.
10.
11.
The apolar and hydrophobic jojoba molecule was made more hydrophilic by the incorporation of primary amino groupsvia the introduction and subsequent reduction of azido groups. The azides were obtained by the substitution of bromine or a mesylate
group introduced into the jojoba oil molecule; by opening of the epoxide ring in epoxy jojoba; or by the addition of bromoazide
to the double bonds of jojoba. 相似文献
12.
13.
研究了不同条件(静置时间、速度梯度、温度、添加电解质)下模拟含油废水中浮油凝并聚结的过程,探讨了影响浮油稳定性的因素。实验结果及分析表明,适当的静置(20min左右)、一定的速度梯度(1.5~6.9 s~(-1))、较低的温度(5~20℃)以及加入电解质(如NaCl)均可降低浮油废水的稳定性。 相似文献
15.
16.
Five vegetable oils were each randomized by chemical means (with the use of a sodium potassium alloy) and by enzymatic means
(using a nonspecific lipase). The success of the randomization procedure was confirmed via positional analysis. The oxidative
stabilities of the native and chemically randomized oils were determined at storage temperatures of 28°C and 55°C using absorbance
at 234 nm as indicative of conjugated diene content. No difference between curves occurred in oils stored at 55°C, however,
at the lower temperature all chemically randomized oils had significantly steeper slopes (P<0.05), suggesting a lower stability.
When both enzymatically and chemically randomized oils were compared to native oils at 28°C, no significant difference occurred
between slopes of native and enzymatically randomized oils, however, the end content of conjugated dienes was significantly
higher for chemically randomized canola, corn and soybean oils (P<0.05). No difference was seen between the slopes of the
three different oils from either linseed or sunflower. Since both of these oils exhibited higher oxidation rates, it is possible
that observation of differences between the stability of native and chemically randomized oild is dependent upon the rate
of the reaction. 相似文献
17.
18.
研究了用南阳脱沥青油生产凡士林的可能性,提出南阳脱沥青油含有较多的微晶蜡,滴点较高,不是生产凡士林的合适原材料;但若与蜡下油和中等粘度的润滑油、基础油调配后,可生产出同时满足医药和化妆用品标准要求的凡士林产品。 相似文献
19.
Temperature effect on the viscosities of palm oil and coconut oil blended with diesel oil 总被引:1,自引:0,他引:1
One of the major difficulties in using crude vegetable oils as substitute fuels in diesel engines is their relatively high
viscosities. Increasing the temperature of the crude vegetable oil, blending it with diesel oil, or the combination of both
offers a simple and effective means of controlling and lowering the viscosities of vegetable oils. This work reports viscosity
data, determined with a rotational bob-and-cup viscometer, for crude palm oil and cononut oil blended with diesel oil over
the temperature range of 20–80°C and for different mixture compositions. All the test oil samples showed a time-independent
newtonian type of flow behavior. The reduction of viscosity with increasing liquid temperature followed an exponential relationship,
with the two constants of the equation being a function of the volume percentage of the vegetable oil in the mixture. A single
empirical equation was developed for predicting the viscosity of these fuel mixtures under varying temperatures and blend
compositions. 相似文献
20.
以黄岛油库为例,分析了油库混油现象的原因和解决的办法,在保证生产有序进行的同时,又确保同类不同牌号的油品质量不受影响,对成品油的贮运和管理提供了很好的借鉴。 相似文献