This article focuses on the hydrocracking technology for upgrading the quality of tail oil and the first commercial application of the RN-32V/RHC- 1 catalysts in the 1.0 Mt/a hydrocracker at the Yangzi Petrochemical C...This article focuses on the hydrocracking technology for upgrading the quality of tail oil and the first commercial application of the RN-32V/RHC- 1 catalysts in the 1.0 Mt/a hydrocracker at the Yangzi Petrochemical Company, which was started up successfully in September 2008. One month after start-up of the hydrocracking unit, an evaluation opera- tion has been conducted fbr assessing the catalysts performance. The technical calibration results showed that the RN- 32V/RHC-1 catalysts had high activity, and the product yield distribution was reasonable. The hydrocracker can provide abundant feedstocks for the downstream aromatic production unit and ethylene production unit.展开更多
Edible oils play important roles in people's daily diets, so it is necessary to evaluate their quality. Low-field nuclear magnetic resonance(LF-NMR) is a fast, accurate and nondestructive technology that has devel...Edible oils play important roles in people's daily diets, so it is necessary to evaluate their quality. Low-field nuclear magnetic resonance(LF-NMR) is a fast, accurate and nondestructive technology that has developed rapidly in recent years and is widely used in food quality detection. In this paper, the application of LF-NMR combined stoichiometry in the detection of oilseed oil content, the physicochemical properties of different oil systems, the accurate detection of different indices(i.e., acid value, peroxide value, free fatty acid, total polar compounds, and viscosity) of edible oils and the identification of edible oil adulteration are reviewed and discussed. This study provides a reference for further rapid and nondestructive control of oil quality and accurate evaluation of oil-containing systems. In addition, this work will provide an excellent summary for the application of LF-NMR technology in the edible oil field.展开更多
We assessed chemical composition and variation in oil content and seed weight of 40 wild-growing almonds（Prunus L. spp.） accessions collected from different parts of Iran. There were significant differences in kerne...We assessed chemical composition and variation in oil content and seed weight of 40 wild-growing almonds（Prunus L. spp.） accessions collected from different parts of Iran. There were significant differences in kernel weight and oil parameters. Accessions ranged from0.20 to 1.5 g in kernel weight, 0.2–3.0 mm in shell thickness, and 16–55 % in oil content. The predominant vegetable oil components of kernels were 4.6–9.5 % palmitic acid, 0.4–0.8 % palmitoleic acid, 1.0–3.4 % stearic acid,48.8–88.4 % oleic acid and 11.3–33.2 % linoleic acid.Linolenic acid was detected in 15 accessions. High heritability was recorded for all studied traits and was maximum for shell thickness（98.5 %） and minimum for oil content（97.1 %）. Maximum and minimum ‘Euclidean＇pair wise dissimilarities were 17.9 and 0.5, respectively.All 40 accessions were grouped into two major clusters.展开更多
文摘This article focuses on the hydrocracking technology for upgrading the quality of tail oil and the first commercial application of the RN-32V/RHC- 1 catalysts in the 1.0 Mt/a hydrocracker at the Yangzi Petrochemical Company, which was started up successfully in September 2008. One month after start-up of the hydrocracking unit, an evaluation opera- tion has been conducted fbr assessing the catalysts performance. The technical calibration results showed that the RN- 32V/RHC-1 catalysts had high activity, and the product yield distribution was reasonable. The hydrocracker can provide abundant feedstocks for the downstream aromatic production unit and ethylene production unit.
基金the National Natural Science Foundation of China Youth Fund (NO:32201947)Shaanxi Province Qin Chuangyuan “Scientist+Engineer” team project (2024QCY-KXJ-079)Shaanxi Science and Technology Innovation Team Project (2024RSCXTD-70) for the financial support。
文摘Edible oils play important roles in people's daily diets, so it is necessary to evaluate their quality. Low-field nuclear magnetic resonance(LF-NMR) is a fast, accurate and nondestructive technology that has developed rapidly in recent years and is widely used in food quality detection. In this paper, the application of LF-NMR combined stoichiometry in the detection of oilseed oil content, the physicochemical properties of different oil systems, the accurate detection of different indices(i.e., acid value, peroxide value, free fatty acid, total polar compounds, and viscosity) of edible oils and the identification of edible oil adulteration are reviewed and discussed. This study provides a reference for further rapid and nondestructive control of oil quality and accurate evaluation of oil-containing systems. In addition, this work will provide an excellent summary for the application of LF-NMR technology in the edible oil field.
基金financially supported by Payam-e-Noor University
文摘We assessed chemical composition and variation in oil content and seed weight of 40 wild-growing almonds（Prunus L. spp.） accessions collected from different parts of Iran. There were significant differences in kernel weight and oil parameters. Accessions ranged from0.20 to 1.5 g in kernel weight, 0.2–3.0 mm in shell thickness, and 16–55 % in oil content. The predominant vegetable oil components of kernels were 4.6–9.5 % palmitic acid, 0.4–0.8 % palmitoleic acid, 1.0–3.4 % stearic acid,48.8–88.4 % oleic acid and 11.3–33.2 % linoleic acid.Linolenic acid was detected in 15 accessions. High heritability was recorded for all studied traits and was maximum for shell thickness（98.5 %） and minimum for oil content（97.1 %）. Maximum and minimum ‘Euclidean＇pair wise dissimilarities were 17.9 and 0.5, respectively.All 40 accessions were grouped into two major clusters.
