TWI475220B - Simple oil quality detector and method for detecting oil quality - Google Patents
Simple oil quality detector and method for detecting oil quality Download PDFInfo
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Description
本發明有關於一種油品的檢測裝置及檢測方法，尤指一種生質柴油的檢測裝置及檢測方法。The invention relates to an oil detecting device and a detecting method, in particular to a raw diesel detecting device and a detecting method.
2011年英國石油公司所公布BP Statistical Review of World Energy報告中指出，在2010年的全球生質能源產量就提升了將近15%。年總產量接近於六萬千噸，並且持續激增之中，而佔生質能源產量最大宗的即是生質柴油。此外，不論是燃料用油、食品用油以及其廢棄油、油品原料等，從原料控管、製程控管到產品品管、以及後續的回收作業，這些流程皆需要不斷地進行油品檢測。因此，如何以簡易的方式，快速、準確地提供管理人員相關的關鍵資訊，以及如何準確且迅速地作好生質柴油的品質控管，的確是目前很重要的課題。According to the BP Statistical Review of World Energy report released by BP in 2011, global biomass energy production increased by nearly 15% in 2010. The total annual output is close to 60,000 tons and continues to surge, and the largest producer of raw energy is biodiesel. In addition, whether it is fuel oil, food oil, and its waste oil, oil raw materials, etc., from raw material control, process control, product quality control, and subsequent recycling operations, these processes require constant oil testing. . Therefore, how to provide key information related to managers quickly and accurately in an easy way and how to accurately and quickly control the quality of biodiesel is indeed an important issue at present.
然而，目前的油品檢測方法較為耗時、且使用的儀器昂貴、且檢測流程過於複雜。有鑑於此，目前需要一種能改善上述缺失的油品檢測裝置及檢測方法。However, current oil detection methods are time consuming, expensive to use, and the detection process is too complex. In view of the above, there is a need for an oil product detecting device and a detecting method capable of improving the above-described deficiency.
本發明的主要目的為提供一種油品的檢測裝置及檢測方法，具有較優越的檢測性能以及可重複性。The main object of the present invention is to provide an oil detecting device and a detecting method, which have superior detection performance and repeatability.
依據本發明的一實施例，提供一種簡易油品品質檢測裝置，包括：一頻譜分析儀；以及一對電極片，各該電極片具有一第一表面，而該第一表面的上端部連接有一導電片，而該第一表面的下端部設有一碳塗電極，該二電極片之導電片耦接於該頻譜分析儀，且該二電極片的第一表面相互面對。According to an embodiment of the present invention, there is provided a simple oil quality detecting apparatus comprising: a spectrum analyzer; and a pair of electrode sheets, each of the electrode sheets having a first surface, and an upper end portion of the first surface is connected a conductive sheet, and a lower end portion of the first surface is provided with a carbon coated electrode, and the conductive sheet of the two electrode sheet is coupled to the spectrum analyzer, and the first surfaces of the two electrode sheets face each other.
依據本發明的一實施例，提供一種油品品質檢測方法， 包括下列步驟：製備一對電極片，而各該電極片的第一表面的下端部設有一碳塗電極；將該二電極片與一頻譜分析儀相耦接，其中該二電極片的第一表面相互面對；將待測油品裝入容器中；以及將該二個電極片的碳塗電極***裝有待測油品的容器中，以便量測待測油品的阻抗值。According to an embodiment of the present invention, an oil quality detecting method is provided, The method includes the following steps: preparing a pair of electrode sheets, wherein a lower end portion of the first surface of each of the electrode sheets is provided with a carbon coated electrode; the two electrode sheets are coupled to a spectrum analyzer, wherein the first electrode sheet is first The surfaces face each other; the oil to be tested is loaded into the container; and the carbon coated electrodes of the two electrode sheets are inserted into a container containing the oil to be tested to measure the impedance value of the oil to be tested.
第1圖繪示本發明一實施例所提供的油品品質的檢測裝置的示意圖。如第1圖所示，該檢測裝置100包括一頻譜分析儀102以及一對厚度為5毫米的電極片104，頻譜分析儀102可使用50mv的正弦訊號進行掃瞄，而正弦訊號的頻率可設定於10mHz至100kHz之間。頻譜分析儀102的正極夾103A以及負極夾103B分別夾住該二電極片104，且透過一夾子105將該二電極片104及一絕緣材料的隔板106夾住，其中隔板106夾在二個電極片104之間，且隔板106的厚度W為0.08毫米。二個電極片104的下端部***裝有生質柴油200的容器300中，該檢測裝置100還包括一溫度控制器108，而裝有生質柴油200的容器300置放於溫度控制器108上，溫度控制器108用以調控生質柴油200的溫度。FIG. 1 is a schematic view showing an apparatus for detecting the quality of an oil according to an embodiment of the present invention. As shown in FIG. 1, the detecting device 100 includes a spectrum analyzer 102 and a pair of electrode sheets 104 having a thickness of 5 mm. The spectrum analyzer 102 can scan with a 50 mv sinusoidal signal, and the frequency of the sinusoidal signal can be set. It is between 10mHz and 100kHz. The positive electrode clip 103A and the negative electrode clip 103B of the spectrum analyzer 102 respectively sandwich the two electrode sheets 104, and sandwich the two electrode sheets 104 and a separator 106 of an insulating material through a clip 105, wherein the partition plate 106 is sandwiched between two Between the electrode sheets 104, and the thickness W of the separator 106 is 0.08 mm. The lower end portions of the two electrode sheets 104 are inserted into the container 300 containing the biodiesel 200. The detecting device 100 further includes a temperature controller 108, and the container 300 containing the biodiesel 200 is placed on the temperature controller 108. The temperature controller 108 is used to regulate the temperature of the biodiesel 200.
第2圖繪示檢測裝置的檢測片的示意圖。如第1圖及第2圖所示，電極片104具有一第一表面110及一相對於第一表面110的第二表面111，電極片104為網狀印刷碳塗佈電極(screen-printed carbon paste electrode)，第一表面110的上端部連接有一長形狀的導電片112以及第一表面110的下端部設有一圓形的碳塗電極114。以往使用金屬(例如白金、不鏽鋼)電極進行生質柴油200的檢測時，無法獲得穩定及具備重複性的資料，其原因在於金屬電極的親油性較低以致於生質柴油無法緊密地貼近於金屬電極的表面而具有較大的接觸角(contact angle)。反之碳塗電極114具有較高親油性，以致於生質柴油200可以緊密貼近於碳塗電極114而具有小於5度的接觸角。FIG. 2 is a schematic view showing a detecting piece of the detecting device. As shown in FIGS. 1 and 2, the electrode sheet 104 has a first surface 110 and a second surface 111 opposite to the first surface 110. The electrode sheet 104 is a screen-printed carbon. The upper surface of the first surface 110 is connected to a long-shaped conductive sheet 112, and the lower end of the first surface 110 is provided with a circular carbon-coated electrode 114. In the past, when metal (for example, platinum, stainless steel) electrodes were used for the detection of biodiesel 200, stable and reproducible data could not be obtained because the oleophilicity of the metal electrode was so low that the biodiesel could not be close to the metal. The surface of the electrode has a large contact angle (contact Angle). Conversely, the carbon coated electrode 114 has a higher lipophilicity such that the biodiesel 200 can be in close proximity to the carbon coated electrode 114 with a contact angle of less than 5 degrees.
另一方面，該二電極片104最好盡可能地貼近以使得該二電極片104之間距很小，如此一來可以大幅地降低電極片104的阻抗。此外，當兩個電極片104十分貼近時，生質柴油200會因為毛細現象而較容易吸附於電極片104上，如此一來，不需加裝泵浦系統將生質柴油200抽取至電極片104上。On the other hand, the two electrode sheets 104 are preferably as close as possible so that the distance between the two electrode sheets 104 is small, so that the impedance of the electrode sheets 104 can be greatly reduced. In addition, when the two electrode sheets 104 are in close proximity, the biodiesel 200 is more likely to be adsorbed on the electrode sheets 104 due to capillary phenomenon, so that the pumping system is not required to extract the biodiesel 200 to the electrode sheets. 104 on.
第3圖繪示本發明一實施例所提供的油品品質的檢測方法的流程圖。如第3圖所示，該檢測方法的步驟如下：S301：製備一對電極片104，而電極片104的第一表面110的下端部設有碳塗電極114；S302：將該二電極片104與頻譜分析儀102相耦接，其中該二電極片104的第一表面110相互面對；S303：將二個電極片104的上端部之間夾設隔板106，隔板106之厚度等於該二電極片104之間距；S304：將生質柴油200裝入容器300中；S305：將裝有生質柴油200的容器300放置於溫度控制器108上，透過溫度控制器108調控生質柴油200的溫度；S306：將二個電極片104的碳塗電極114***裝有生質柴油200的容器300中，以便量測生質柴油200的阻抗值。FIG. 3 is a flow chart showing a method for detecting the quality of an oil product according to an embodiment of the present invention. As shown in FIG. 3, the steps of the detecting method are as follows: S301: preparing a pair of electrode sheets 104, and the lower end portion of the first surface 110 of the electrode sheet 104 is provided with a carbon coating electrode 114; S302: the second electrode sheet 104 The first surface 110 of the two electrode sheets 104 is opposite to each other; S303: a partition 106 is interposed between the upper ends of the two electrode sheets 104, and the thickness of the partition 106 is equal to The distance between the two electrode sheets 104; S304: loading the raw diesel 200 into the container 300; S305: placing the container 300 containing the biodiesel 200 on the temperature controller 108, and regulating the biodiesel 200 through the temperature controller 108 The temperature is set; S306: The carbon coated electrode 114 of the two electrode sheets 104 is inserted into the container 300 containing the biodiesel 200 to measure the impedance value of the biodiesel 200.
值得一提的，每一次使用過電極片104後，可使用濃度70%的酒精對碳塗電極114進行清洗，清洗後的碳塗電極114便可再次使用，因此碳塗電極114具有高度的可重複使用性。此外要注意的是，不可使用純酒精對碳塗電極114進行清洗，因為純酒精會溶解碳塗電極114的表面。It is worth mentioning that after each use of the electrode sheet 104, the carbon coating electrode 114 can be cleaned with 70% alcohol, and the cleaned carbon coating electrode 114 can be used again, so the carbon coating electrode 114 has a high degree of flexibility. Reusability. In addition, it should be noted that the carbon coated electrode 114 may not be cleaned with pure alcohol because pure alcohol dissolves the surface of the carbon coated electrode 114.
第4圖繪示油品品質檢測裝置的等效電路圖，第5圖繪示生質柴油混合比相對於等效電路的元件參數的表格，而第6圖繪示不同混合比B(%)的生質柴油之奈氏圖。如第4圖所示， 等效電路的元件包含有溶液電阻R s 、界面電容C D 、充電電阻R CT 、以及擴散阻抗W diff ，充電電阻R CT 串聯於擴散阻抗W diff ，界面電容C D 並聯於充電電阻R CT 與擴散阻抗W diff 的等效電阻，而溶液電阻R s 串聯於界面電容C D 、充電電阻R CT 、以及擴散阻抗W diff 的等效阻抗。如第5圖所示，透過溫度控制器108讓具有不同混合比B(%)的生質柴油維持在25℃，可發現混合比B(%)會影響溶液電阻R s 、界面電容C D 、充電轉換電阻R CT 、以及擴散限制阻抗W diff 的參數值。清楚可見的，當混合比B(%)越高時，充電電阻R CT 的參數值越低。如第6圖，同一溫度下混合比B(%)分別為25%以及50%的生質柴油的奈氏曲線之軌跡不同，其中混合比50%的生質柴油的奈氏曲線的曲率半徑較小，因此由奈氏曲線的軌跡，可以很明顯地分辨出不同混合比B(%)的生質柴油。4 is an equivalent circuit diagram of the oil quality detecting device, FIG. 5 is a table showing component parameters of the raw diesel fuel mixture with respect to the equivalent circuit, and FIG. 6 is a view showing different mixing ratios B (%). Nai's diagram of biodiesel. As shown in FIG. 4, the components of the equivalent circuit include a solution resistor R s , an interface capacitance C D , a charging resistor R CT , and a diffusion impedance W diff , and the charging resistor R CT is connected in series to the diffusion impedance W diff , and the interface capacitance C D The equivalent resistance of the charging resistor R CT and the diffusion impedance W diff is connected in parallel, and the solution resistance R s is connected in series to the equivalent impedance of the interface capacitance C D , the charging resistance R CT , and the diffusion impedance W diff . As shown in Fig. 5, the temperature controller 108 maintains the biodiesel with different mixing ratio B (%) at 25 ° C, and it can be found that the mixing ratio B (%) affects the solution resistance R s , the interface capacitance C D , The parameter values of the charge conversion resistor R CT and the diffusion limit impedance W diff . It is clearly seen that the higher the mixing ratio B (%), the lower the parameter value of the charging resistor R CT . As shown in Fig. 6, the trajectory of the Nessler curve of the biodiesel with a mixing ratio B (%) of 25% and 50% at the same temperature is different, and the radius of curvature of the Nessler curve of the biodiesel with a mixing ratio of 50% is higher. Small, so from the trajectory of the Nessler curve, the biodiesel with different mixing ratio B (%) can be clearly distinguished.
第7圖繪示不同混合比的生質柴油之頻率-阻抗關係圖。如第7圖所示，同一溫度下，混合比B(%)較高的生質柴油，其阻抗值較小，尤其當頻譜分析儀102的頻率設定在小於10-0.5 Hz(0.32Hz)時，不同混合比的生質柴油B(%)，其阻抗值的差異最為明顯。Figure 7 is a graph showing the frequency-impedance relationship of biodiesel with different mixing ratios. As shown in Fig. 7, at the same temperature, the biomass diesel having a higher mixing ratio B (%) has a smaller impedance value, especially when the frequency of the spectrum analyzer 102 is set to be less than 10 -0.5 Hz (0.32 Hz). The difference in impedance value of the biodiesel B (%) with different mixing ratios is the most obvious.
第8圖繪示生質柴油之頻率-校正曲線梯度的關係圖。如第8圖所示，在同一溫度下，校正曲線的斜率越大所對應的頻率(0.32Hz)，即是能讓混合比B(%)與阻抗的關係最趨近於線性也是混合比B(%)對於阻抗的影響最大的頻率。第9圖繪示生質柴油之混合比-阻抗關係圖。如第9圖所示，在同一溫度下，生質柴油的阻抗值與混合比B(%)的關係近似線性。第10圖繪示不同溫度下生質柴油之混合比-阻抗關係圖。如第10圖所示，當生質柴油的混合比B(%)越小時，溫度對於生質柴油的阻抗值的影響越小，也就是對於溫度的容忍度越高。Figure 8 is a graph showing the relationship between the frequency-correction curve gradient of the biodiesel. As shown in Fig. 8, at the same temperature, the larger the slope of the calibration curve corresponds to the frequency (0.32 Hz), that is, the relationship between the mixing ratio B (%) and the impedance is most linear and the mixture ratio is B. (%) The frequency that has the greatest impact on impedance. Figure 9 is a graph showing the mixing ratio-impedance relationship of biodiesel. As shown in Fig. 9, at the same temperature, the relationship between the impedance value of the biodiesel and the mixing ratio B (%) is approximately linear. Figure 10 is a graph showing the mixing ratio-impedance relationship of biodiesel at different temperatures. As shown in Fig. 10, when the mixing ratio B (%) of the raw diesel is smaller, the influence of the temperature on the impedance value of the raw diesel is smaller, that is, the tolerance to temperature is higher.
本發明所提供的油品品質的檢測裝置及檢測方法，該檢 測裝置的架構簡單且操作方便，故能於短暫的時間內，準確地檢測出生質柴油的阻抗，進而推導出生質柴油的混合比。此外經過多次使用後誤差值小於3%，而檢測溫度在介於25℃至65℃之間時，皆能保持優異的性能以及維持重複性，非常符合現行生質柴油的檢測需求。The oil quality detecting device and the detecting method provided by the invention, the detecting The measuring device has a simple structure and convenient operation, so that the impedance of the birth quality diesel can be accurately detected in a short period of time, and then the mixing ratio of the raw diesel oil is derived. In addition, after repeated use, the error value is less than 3%, and the detection temperature is between 25 ° C and 65 ° C, which can maintain excellent performance and maintain repeatability, which is in line with the current testing requirements of biodiesel.
以上敍述依據本發明多個不同實施例，其中各項特徵可以單一或不同結合方式實施。因此，本發明實施方式之揭露為闡明本發明原則之具體實施例，應不拘限本發明於所揭示的實施例。進一步言之，先前敍述及其附圖僅為本發明示範之用，並不受其限囿。其他元件之變化或組合皆可能，且不悖于本發明之精神與範圍。The above description is based on a number of different embodiments of the invention, wherein the features may be implemented in a single or different combination. Therefore, the disclosure of the embodiments of the present invention is intended to be illustrative of the embodiments of the invention. Further, the foregoing description and the accompanying drawings are merely illustrative of the invention and are not limited. Variations or combinations of other elements are possible and are not intended to limit the spirit and scope of the invention.
100‧‧‧檢測裝置100‧‧‧Detection device
102‧‧‧頻譜分析儀102‧‧‧ spectrum analyzer
103A‧‧‧正極夾103A‧‧‧ positive clip
103B‧‧‧負極夾103B‧‧‧negative clip
104‧‧‧電極片104‧‧‧electrode
105‧‧‧夾子105‧‧‧ clip
106‧‧‧隔板106‧‧‧Baffle
108‧‧‧溫度控制器108‧‧‧temperature controller
110‧‧‧第一表面110‧‧‧ first surface
111‧‧‧第二表面111‧‧‧ second surface
112‧‧‧導電片112‧‧‧Conductor
114‧‧‧碳塗電極114‧‧‧Carbon electrode
200‧‧‧生質柴油200‧‧‧Biodiesel
300‧‧‧容器300‧‧‧ container
第1圖繪示本發明一實施例所提供的油品品質檢測裝置的示意圖；第2圖繪示油品品質檢測裝置的檢測電極的示意圖；第3圖繪示本發明一實施例所提供的油品品質檢測方法的流程圖；第4圖繪示油品品質檢測裝置的等效電路圖；第5圖繪示生質柴油的混合比相對於等效電路的元件參數的表格；第6圖繪示不同混合比的生質柴油之奈氏圖；第7圖繪示不同混合比的生質柴油之頻率-阻抗關係圖；第8圖繪示生質柴油之頻率-校正曲線梯度關係圖；第9圖繪示生質柴油之混合比-阻抗關係圖；以及第10圖繪示不同溫度下生質柴油之混合比-阻抗關係圖。1 is a schematic view showing an oil quality detecting device according to an embodiment of the present invention; FIG. 2 is a schematic view showing a detecting electrode of an oil quality detecting device; and FIG. 3 is a view showing an embodiment of the present invention. A flow chart of the oil quality detecting method; FIG. 4 is an equivalent circuit diagram of the oil quality detecting device; and FIG. 5 is a table showing the mixing ratio of the raw diesel fuel with respect to the element parameters of the equivalent circuit; Nine's diagram of biodiesel with different mixing ratios; Figure 7 shows the frequency-impedance diagram of biodiesel with different mixing ratios; Figure 8 shows the frequency-correction curve gradient diagram of biodiesel; Figure 9 is a graph showing the mixing ratio-impedance relationship of biodiesel; and Figure 10 is a graph showing the mixing ratio-impedance relationship of biodiesel at different temperatures.
100‧‧‧檢測裝置100‧‧‧Detection device
102‧‧‧頻譜分析儀102‧‧‧ spectrum analyzer
103A‧‧‧正極夾103A‧‧‧ positive clip
103B‧‧‧負極夾103B‧‧‧negative clip
104‧‧‧電極片104‧‧‧electrode
105‧‧‧夾子105‧‧‧ clip
106‧‧‧隔板106‧‧‧Baffle
108‧‧‧溫度控制器108‧‧‧temperature controller
110‧‧‧第一表面110‧‧‧ first surface
111‧‧‧第二表面111‧‧‧ second surface
112‧‧‧導電片112‧‧‧Conductor
200‧‧‧生質柴油200‧‧‧Biodiesel
300‧‧‧容器300‧‧‧ container
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61502836A (en) * | 1984-04-06 | 1986-12-04 | フラウンフオフア−ゲ−ゼルシヤフト ツワ フア−デルウンク デエア アンゲバンテン フオアシユンク エ−．フアウ． | Sensor for detecting liquid properties, how to use this sensor, and liquid property measuring device using this sensor |
| CN201096694Y (en) * | 2007-10-23 | 2008-08-06 | 岳真 | An oil, chemical liquid and waste oil detection device |
| JP2009204375A (en) * | 2008-02-27 | 2009-09-10 | Panasonic Corp | Electrode base for biomolecule detection and its manufacturing method |
-
2012
- 2012-10-31 TW TW101137480A patent/TWI475220B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61502836A (en) * | 1984-04-06 | 1986-12-04 | フラウンフオフア−ゲ−ゼルシヤフト ツワ フア−デルウンク デエア アンゲバンテン フオアシユンク エ−．フアウ． | Sensor for detecting liquid properties, how to use this sensor, and liquid property measuring device using this sensor |
| CN201096694Y (en) * | 2007-10-23 | 2008-08-06 | 岳真 | An oil, chemical liquid and waste oil detection device |
| JP2009204375A (en) * | 2008-02-27 | 2009-09-10 | Panasonic Corp | Electrode base for biomolecule detection and its manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| F. Opekar, R. ˇCabala, T. Kadlecová，"A simple contactless impedance probe for determination of ethanol in gasoline"，Analytica Chimica Acta，P57–60，2011.03.30 * |
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| TW201416666A (en) | 2014-05-01 |
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