| 词条 | PONA number |
| 释义 |
The PONA number is an index for oil components. It is used to determine the paraffins (P), olefins (O), naphthenes (N) and aromatics content[1] of FCC (fluid catalytic cracking) and coker (visbreaker) gasoline. The PONA number is significant in determining the quality of naphtha. There are various grades of naphtha produced depending on the PONA specifications, such as 60/15, 65/12, 70/10, etc. The first number is the minimum allowable total parafins percentage and the second number specifies the maximum allowable aromatics percentage. It also determines the price of naphtha in international markets. See also
References1. ^{{cite web|url=http://www.shimadzu.com/an/industry/machineryautomotive/fuel_battery0403020.htm|title=PONA Analysis (GC) : SHIMADZU (Shimadzu Corporation)|publisher=|accessdate=8 March 2017}} {{DEFAULTSORT:Pona Number}} 1 : Petroleum |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。