Method for producing renewable fuel
A marine fuel and aviation fuel technology, applied in the field of paraffin products, can solve the problems of restricting the development of aviation fuel and marine fuel, limited supply of biological source alternatives, and lack of cost competitiveness
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Embodiment 1
[0179] The bioderived feedstock provided for the experiments contained 73% AF (animal fat) and 27% PFAD (palm oil fatty acid distillate). After pretreatment by bleaching, the raw material is first used for about 2.7h at about 300-340°C and about 50 bar -1 WHSV and a hydrogen flow rate of about 590 NL / L feed, hydrodeoxygenation was performed using a sulfided NiMo catalyst supported on alumina. Subsequently, the hydrodeoxygenated paraffinic feed was heated at 330-340° C., about 40 bar for about 1.5 h in the presence of a Pt-SAPO catalyst -1 WHSV and a hydrogen to feed ratio of about 300 NL / L for the isomerization reaction. The effluent from the hydroisomerization was stabilized by refluxing with about 230 kg / h of stripping steam.
[0180] The resulting paraffinic intermediate is fractionated by distillation into two bio-derived cuts; one that meets the ASTM D7566-20 Annex A2 specification for HEFA-SPK, and one that meets the ISO 8217 (2017) standard for marine fuels.
[0181]...
Embodiment 2
[0185] In Table 1, the descriptive results determined for the product of Example 1 68%-FBP (Component 1) refer to defining the distilled product as meeting ISO-F-DM (distillate) based on the most stringent criteria for typical properties and / or RM (residual) key parameters of the availability of marine fuel components to the specifications of the ISO8217 standard for marine fuels. This specification varies by product type (DM type, RM type) and is further exemplified by the ranges given in Table 1. The exact specification values or ranges for the different properties of each fuel type and their definitions are provided in detail in Tables 1 and 2 of ISO 8217 (2017).
[0186] Table 1
[0187]
[0188]
[0189] *EN15195 cetane number 82.6
[0190] **Including lubricant additives
[0191]As shown in Table 1, marine fuel component 1 exhibits a high flash point, which ensures safe product handling, which means that the product can be handled more safely than typical mari...
Embodiment 3
[0205] Further experiments were carried out according to Example 1, but in which the distillation of the paraffinic intermediate was carried out in the following manner:
[0206] Initial Boiling Point (IBP) - 75% Distillation Point: 75 wt% (ie, HEFA-SPK fraction),
[0207] • 57% Distillation Point to Final Boiling Point (FBP): 25 wt% (ie, Marine Fuel Component 2).
[0208] Marine fuel component 2 obtained from this distillation was obtained by blending together 5 vol%, 20 vol% and 50 vol% marine fuel component 2 and 95 vol%, 80 vol% and 50 vol% DMB products, respectively (Table 5). Component 2) was blended with a commercial fossil DMB marine fuel (DMB, Neste's marine diesel DMB grade). Table 5 shows the most basic properties of the blend components and the resulting blends.
[0209] table 5
[0210]
[0211]
[0212] The blends of Marine Fuel Component 2 with marine fossil fuels exhibit an improvement in pour point compared to the pour point of marine fossil fuels. F...
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