
傾點下降劑
At the delivery of crude oil process, the main research of the pour point depressant for crude oil the role of low-temperature fluidity.
在原油的輸送過程中,主要研究了降凝劑對原油低溫流動性的作用。
The working principle of pour point depressant and the influencing factors on its effect are introduced, as well as the main types of domestic products and their application situation.
介紹了降凝劑的作用機理、降凝效果的影響因素,以及目前中國使用的主要國産降凝劑品種及應用現狀。
The characteristic groups of polymeric pour point depressant(PPD)were analyzed by FT-IR and NMR techniques. The crystallization properties of various types of wax and PPD were measured by XRD.
采用紅外光譜儀、 核磁共振波譜儀對聚合物的合成特征基團進行了表征,并采用X射線衍射儀對不同型號蠟及降凝劑的結晶性能進行了分析測試。
This article introduces the synthetic method of PAE pour-point depressant and indoor appraisal and field application test.
介紹了PAE降凝劑的合成方法,并對産品進行了室内評價和現場應用試驗。
Unitary depressant is hard to reduce effectively the pour point and viscosity of crude oil because crude oil is made up of multiple compounds.
由于原油組分的複雜性,使用單一降凝劑很難有效地降低各種原油的凝點和粘度。
This paper discussed the function principle, usage and sensitivity of ***sel oil pour point depressant and introduced the application properties of several new types of pour point depressant.
論述了柴油低溫流動性改進劑的作用原理、使用方法和感受性,重點介紹了幾種新型低溫流動性改進劑的使用性能及發展動态。
Disclosed is a pour point depressant for lubricants, which has an effect of lowering pour points of both solvent refined base oils and high viscosity index base oils.
本發明要提供一種對溶劑精煉基礎油和高粘度指數基礎油兩者均具有降低傾點的效果的潤滑油用傾點下降劑。
Adding surfactant with larger steric structure and longer linear chain could significantly improve the anti-repeated heating and shear-resistant properties of the pour point depressant.
添加有較大的空間結構和較長直鍊的表面活性劑對原油流動性改進劑抗重複加熱和抗剪切能力的改善效果最好;
Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced .
介紹了降凝劑中間體*********高碳醇酯的合成和産品分離提純方法。
The results indicates that the blended oil under the action of pour point depressant has better stability both static and dynamic.
試驗結果表明,經降凝劑處理後的混合油具有較好的動态和靜态穩定性。
Meanwhile according to the pour point depressant synergism's principle, we compounded EVA with polymer surface active agent.
同時根據降凝劑協同作用的原理,對其與高分子表面活性劑進行了複配實驗。
The influence of pour point depressant on the shape and electric properties of wax crystal was stu***d by micro-electrophoresis meter and polarizing microscope.
采用偏光顯微鏡和微電泳儀研究了聚*********酯降凝劑對蠟晶的形态和電性質的影響。
The flowability improvement by using commercial pour point depressant WHP is stu***d for Zhengwangzhuang viscous crude oil of Shengli, containing 56.9% wax, of which 96.6% is noraml paraffins.
實驗研究了工業品原油降凝劑WHP改善含蠟56.9%、其中96.6%為正構烷烴的勝利鄭王莊稠油流動性的效果。
Using Changqing and Qinghai waxy crude oils as research objects, the depressive effects of ethylene-vinyl acetate(EVA) copolymer pour point depressant on the waxy crude oils were stu***d.
以長慶、青海含蠟原油為研究對象,考察乙烯-***************共聚物(簡稱EVA)降凝劑對含蠟原油的降凝效果。
The copolymers and their esters were employed as pour point depressant to improve the low-temperature fluidity of bio***sel.
将其作為生物柴油降凝劑,用于改善生物柴油低溫流動性。
The experimental procedures are:adding pour point depressant T9866 in a ***sel sample and measuring the solidifying point and cold filter plugging point of the oil sample.
實驗方法為:在柴油油樣中加入T9866降凝劑,然後測定油樣凝點和冷濾點。
A reformation theory of pour point depressant is verified and the reformation law of pour point depressant is obtained by means of research on reformation of pour point depressant.
通過對降凝劑複配的研究,提出并驗證了降凝劑複配理論,得到了降凝劑複配規律。
Add different for different crude oil pour point depressant, dispersant or viscosity reducer can improve low-temperature fluidity of crude oil.
針對不同原油加入不同降凝劑、分散劑或降粘劑可以改善原油的低溫流動性。
Combination of pour point depressant and crystal wax dispersant could improve greatly, which could further decrease the cold filter plugging point by 3-4℃and the solidifying point by 4-7℃.
降凝劑與蠟晶分散劑複配後的降凝降濾效果均有所提高,冷濾點再降低3—4℃,凝點再降低4—7℃。
The paper introduces the commonly used pour point depressant and viscosity reducer of the technology , the method , mechanism and respective good and bad points.
常用的降粘降凝技術及各種降粘降凝方法的作用機理及各自的優缺點。
Based on p-toluenesulfonic acid as catalyst, pour point depressant was synthesized with copolymer and 18 amines.
再以對甲苯磺酸為催化劑,十八胺胺解共聚物得降凝劑。
The invention discloses a pour point depressant of lubricating oil, which is a terpolymer of pentaerythritol-2-fatty acid ester, fumaric acid and acrylamide.
本發明公開了一種潤滑油降凝劑,其為************二脂肪酸酯、富馬酸和************的三元共聚物。
The research on the low temperature pumpability of oil shows that the pour point depressant has the remarkable improvement;
對油品低溫泵送性能的研究表明,降凝劑具有明顯改善作用;
降凝劑(Pour Point Depressant, PPD) 是石油化工領域一種重要的添加劑,其核心作用是降低油品的傾點(Pour Point)。以下是詳細解釋:
1. 傾點(Pour Point)的定義
傾點是指油品(如潤滑油、燃料油、液壓油等)在特定測試條件下能夠保持流動性的最低溫度。當溫度低于傾點時,油品中的蠟質成分會結晶析出并形成三維網狀結構,導緻油品失去流動性,變得像凝膠或固體狀。測定傾點的标準方法可參考美國材料與試驗協會(ASTM)的ASTM D97 标準(來源:ASTM International)。
2. 降凝劑的作用機理
降凝劑通過抑制蠟晶的生長和聚集來降低傾點。其分子結構通常包含長鍊烷基和極性基團,能夠吸附在蠟晶表面或與之共結晶,從而:
這種機理在低溫環境下顯著提升油品的泵送性和流動性(來源:雪佛龍奧倫耐技術公告 "Lubricant Additives: Chemistry and Applications")。
3. 主要應用場景
降凝劑廣泛應用于:
4. 技術權威文獻支持
根據能源領域期刊《Energy & Fuels》的研究,降凝劑的效能取決于其與油品中蠟組分的化學匹配性。高效的PPD需通過分子設計實現與蠟晶的定向作用(來源:DOI: 10.1021/acs.energyfuels.9b00062)。
5. 行業标準與規範
國際潤滑劑标準化及認證委員會(ILSAC)及美國石油學會(API)的潤滑油規格中,均明确要求油品需滿足特定傾點指标,降凝劑是實現該性能的關鍵添加劑(來源:API Engine Oil Guide)。
Pour point depressant 是石油化工領域的專業術語,由三部分構成:
Pour point(傾點)
指油品(如潤滑油、燃料油)在特定測試條件下能夠流動的最低溫度。該指标反映油品低溫流動性,傾點越低,低溫性能越好。
Depressant(抑制劑)
在化工語境中意為"降低性能的添加劑"。此處指通過化學作用改變油品的結晶過程,從而抑制其凝固傾向。
整體含義
降凝劑(縮寫PPD),即一類通過吸附在蠟晶表面或改變晶體形态,阻止蠟晶網狀結構形成的化學添加劑。例如,提到合成降凝劑PAAN用于改善高傾點燃料的儲存與運輸性能。
應用場景:
常用于柴油、潤滑油等石油産品中,提升低溫環境下的流動性(如寒冷地區輸油管道或發動機冷啟動)。新東方詞典(-11)補充指出,depressant還可指鎮靜劑,但在本術語中特指功能型抑制劑。
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