凝点

基于PCA-SVM的柴油凝点近红外光谱软测量法

PCA-SVM-based Near-infrared Spectroscopy ( NIRS ) Soft Sensing Method for Condensation Point of Diesel Fuel

与BP、SVM及PCA-BP方法相比，实验结果表明所提方法具有更高的测量精度，且与标准方法测量的结果更为接近，因此适合柴油凝点的在线测量。

Experimental results show that comparing with BP , SVM and PCA-BP , the proposed method offers higher precision , and is closer to the standard measuring result , so it fits online measurement of condensation point .

为保证管线安全运行，建议设立一凝点测试岗；同时应定期校验总传热系数K值。

To ensure the security of pipeline working , I suggest a solidifying-point testing post should be established and quotiety of the general heat passing should be tested regularly as well .

流变学、光学显微镜和凝点测试研究表明MAC共聚物能显著降低原油的屈服应力，减小蜡晶尺寸，很好地改善原油的低温流动性，侧链越长，改性效果越好。

Rheology and optical microscopy measurement show MAC copolymers can improve the cold flow ability by reducing yield stress and crystals size . MAC with longer side chain showed better result .

研究表明，ANN方法比常用的调和系数模型、凝点指数模型、凝点换算因子模型等更能准确地关联和预报调和柴油的凝点和冷滤点。

The results showed that ANN method can predict SP and CFPP of blending diesel oil with much more accuracy than regression mathematics model such as blending coefficient model , index correlating model , SP conversion factor model .

用非线性PLS建立了FCCU主分馏塔轻柴油凝固点的软测量模型，设计了直接控制轻柴油凝点的质量控制方案。

Nonlinear PLS is used to build soft sensor of fluidized catalytic cracking unit ( FCCU ) host fractionator light diesel pour point , and quality controller is designed to directly control pour point .

BEMQ原油降凝剂在管道上应用后，原油凝点降低了16～19℃，15℃时原油粘度仅9.7～12mPa·s；

After BEM Q crude depressant was adopted , crude pour point has been decreased by 16 ~ 19 ℃, and crude viscosity at 15 ℃ is only 9.7 ~ 12 mPa · s.

陆梁原油属含蜡高凝原油，混合样凝点达18C。

Luliang crude belongs to waxy and high viscous crude oil , the set point of its mixed sample is 18 C.

用径向基函数神经元网络（RBFNN）作为柴油凝点的软测量模型有极大的优越性，RBFNN具有学习速度快，无局部最小解等优点。

Using radial base function nervous network ( RBFNN ) as the soft determination model for pour point of gas oil has great advantages of rapid study rate , no local minimum solution etc. .

实验方法为：在柴油油样中加入T9866降凝剂，然后测定油样凝点和冷滤点。

The experimental procedures are : adding pour point depressant T9866 in a diesel sample and measuring the solidifying point and cold filter plugging point of the oil sample .

最后用RSNFN方法对催化裂化装置的轻柴油凝点进行估计，取得了良好的效果。

The RSNFN approach was used to build a soft sensor model for estimating the freezing point of the light diesel fuel in fluid catalytic cracking unit ( FCCU ) and good results were obtained .

基于在线分析仪6min采样数据，利用前向网络和时延前向网络（TDNN）分别建立了三线柴油凝点的静态软测量模型和动态软测量模型，并结合在线分析仪对模型实现了在线修正。

A static model and a dynamic model of DOSP soft sensor are built based on forward neural network and time delay neural network ( TDNN ) respectively . The model outputs are modified online according to the values given by the online analysis device .

经90min反应后，固体蜡基本脱净，只剩1.5%，脱蜡油凝点可降至-31℃以下，其粘度反常点为0℃。

90 minutes later , almost all the solid wax can be removed , with only 1.5 % left . The dewaxed oil then has a condensation point of - 31 C or less , with its abnormal point of viscosity being 0 ℃ .

结果表明，在常压、非临氢反应条件下，当温度为400℃、空速为2h-1时，得到较好的产品分布，柴油的凝点为-29℃，润滑油的凝点为-16℃。

The results show that production distribution is good , the solidification point of diesel fuel reaches-29 ℃, and the solidification point of lubricating oil reaches-16 ℃ when reaction temperature is 400 ℃, reaction space velocity is 2 h ~ ( - 1 ) at normal pressure and without hydrogen .

加剂原油凝点对进站温度的影响

The Effect of Solidification Point of Drugged Oil on Inlet Temperature

经预测证明，柴油凝点的近红外光谱测定法是切实可行的，其测定结果与国家标准方法有较好的一致性。

The test results are in agreement with national standard method .

作者应用近红外光谱分析技术建立了一种新的柴油凝点测定方法。

A new method based on NIR spectrometry is reported .

含蜡原油在凝点下的触变性研究

Study of thixotropy of waxy crude oil below solidification point

管输改性原油凝点的测定氯磺化聚乙烯的改性

Determining the Solidification Point of Modified Crude Oil when Pipelining

辽河稠油生产低凝点润滑油基础油

Production of low solidification point lube base oils from Liaohe heavy crude

冬季柴油车通常使用低凝点柴油。

In winter diesel car often uses lower freezing point diesel fuel .

燃料油具有粘度大、凝点高的特点，在自然温度下易凝固，因此对燃料油进行装卸时加温是相当关键的。

Fuel oil has the characteristic of high viscosity and solidifying point .

热历史和剪切历史对长庆含蜡原油凝点的影响

Effect of heating and shearing history on Changqing waxy crude oil condensation point

柴油凝点在线分析仪在常减压蒸馏装置的应用

Application of on-line diesel freezing point analyzer in atmospheric and vacuum distillation unit

常压塔柴油凝点动态软测量模型的研究

Dynamic Soft-sensor Model of Diesel Oil Solidifying Point on a Crude Distillation Unit

FG5545低凝点防蜡剂

FG 5545 Low Pour Point Anti - Wax Agent

柴油的标号是按照它的凝点来划分的。

The label number of diesel oil is classified by its solidifying point .

含蜡原油凝点附近的胶凝特性

Waxy Crude 's Gelling around the Gel Points

多产低凝点清洁柴油的加氢裂化/加氢改质的加氢裂化催化剂

Hydrogenation Cracking and Modification Catalyst to Produce More Clean Diesel with Low Freezing Point

降凝剂使原油的凝点和反常点降低，原油的牛顿流体温度范围变宽，并使非牛顿流体温度下的粘度减小；

PPDS can reduce the pour point and the abnormal point of crude oil .