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Soapstock Utilized for Producing Biofuels by the Delayed Coking Apparatus

Penghao Yu, H. Li, Boxiong Shen

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Abstract

Acidic oil made by acidification and extraction of soapstock was used to produce biofuel in delayed coking apparatus. Through two pre-heatings of acidic oil in delayed coking apparatus, when the temperature of the coking drum reached 460°C, the maximum yield of liquid oil (around 84%) was obtained, whereas the ratio of diesel and gasoline (about 5.3:1) was obtained. The liquid oil was separated by distillation to obtain the biofuel (205–360°C). By comparing the basic properties of the obtained biofuel with 0# diesel and analyzing the basic properties of the resulted biodiesel-diesel blends, the results showed that the performance of the product was almost close to 0# diesel standards; when biodiesel content reached up to 20% in the blend, its properties (such as viscosity, density, and CFPP) changed slightly by comparing with 0# diesel.

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What this paper is about

Acidic oil made by acidification and extraction of soapstock was used to produce biofuel in delayed coking apparatus. Through two pre-heatings of acidic oil in delayed coking apparatus, when the temperature of the coking drum reached 460°C, the maximum yield of liquid oil (around 84%) was obtained, whereas the ratio of diesel and gasoline (about 5.3:1) was obtained. The liquid oil was separated by distillation to obtain the biofuel (205–360°C). By comparing the basic properties of the obtained biofuel with 0# diesel and analyzing the basic properties of the resulted biodiesel-diesel blends, the results showed that the performance of the product was almost close to 0# diesel standards; when biodiesel content reached up to 20% in the blend, its properties (such as viscosity, density, and CFPP) changed slightly by comparing with 0# diesel.

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Available abstract

Acidic oil made by acidification and extraction of soapstock was used to produce biofuel in delayed coking apparatus. Through two pre-heatings of acidic oil in delayed coking apparatus, when the temperature of the coking drum reached 460°C, the maximum yield of liquid oil (around 84%) was obtained, whereas the ratio of diesel and gasoline (about 5.3:1) was obtained. The liquid oil was separated by distillation to obtain the biofuel (205–360°C). By comparing the basic properties of the obtained biofuel with 0# diesel and analyzing the basic properties of the resulted biodiesel-diesel blends, the results showed that the performance of the product was almost close to 0# diesel standards; when biodiesel content reached up to 20% in the blend, its properties (such as viscosity, density, and CFPP) changed slightly by comparing with 0# diesel.

Key concepts: Diesel fuel, Biodiesel, Biofuel, Gasoline, Pulp and paper industry, Distillation, Environmental science, Yield (engineering)

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