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Method for preparing hydrocarbon biodiesel from biomass

A technology of biodiesel and biomass, which is applied in the treatment of hydrocarbon oil, biofuel, and biological raw materials. It can solve the problems of high freezing point, low octane number of light fractions, and inability to be used as gasoline, so as to improve low-temperature performance and relieve Exothermic Effect of Hydrogenation Reaction

Inactive Publication Date: 2016-07-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main component of Fischer-Tropsch synthetic wax is normal paraffin, and its light fraction has a low octane number and cannot be used as gasoline; its middle distillate (distillation range is 150-450°C) has a high freezing point and cannot be used as diesel oil

Method used

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  • Method for preparing hydrocarbon biodiesel from biomass
  • Method for preparing hydrocarbon biodiesel from biomass
  • Method for preparing hydrocarbon biodiesel from biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0066] The volume ratio of soybean oil to Fischer-Tropsch synthetic wax middle distillate (distillation range 150-450°C) is 2:1, and the two are mixed evenly to make raw materials. Weigh 90g of Pt / SAPO-11 catalyst (100mL, particle size of 10-20 mesh) with a Pt loading of 2wt.%, and put it in a stainless steel fixed-bed reactor with an inner diameter of 25mm and a tube length of 1.5m. Both ends are filled with 20-40 mesh quartz sand. The reaction conditions are: 340°C, 6.0MPa, LHSV for 1h -1 , the ratio of the volume of hydrogen to the sum of the volume of Fischer-Tropsch synthetic wax middle distillate and oil is 3000NL / NL. Samples were taken after 24 h of reaction. The liquid hydrocarbon product and water are separated by liquid separation, and the liquid hydrocarbon product is subjected to atmospheric distillation to separate naphtha (fraction less than 150° C.) to obtain biodiesel product (150-450° C. fraction). The liquid hydrocarbon products were analyzed by GC and GC-...

Embodiment 2

[0069] The volume ratio of soybean oil to Fischer-Tropsch synthetic wax middle distillate (distillation range 150-450°C) is 1:1, and the two are mixed evenly to make raw materials. Weigh 90g of Pt / SAPO-11 catalyst (100mL, particle size of 10-20 mesh) with a Pt loading of 2wt.%, and put it in a stainless steel fixed-bed reactor with an inner diameter of 25mm and a tube length of 1.5m. Both ends are filled with 20-40 mesh quartz sand. The reaction conditions are: 340°C, 6.0MPa, LHSV for 1h -1 , the ratio of the volume of hydrogen to the sum of the volume of Fischer-Tropsch synthetic wax middle distillate and oil is 3000NL / NL. Samples were taken after 24 h of reaction. The liquid hydrocarbon product and water are separated by liquid separation, and the liquid hydrocarbon product is subjected to atmospheric distillation to separate naphtha (fraction less than 150° C.) to obtain biodiesel product (150-450° C. fraction). The liquid hydrocarbon products were analyzed by GC and GC-...

Embodiment 3

[0072] The volume ratio of soybean oil to Fischer-Tropsch synthetic wax middle distillate (distillation range 150-450°C) is 1:2, and the two are mixed evenly to make raw materials. Weigh 90g of Pt / SAPO-11 catalyst (100mL, particle size of 10-20 mesh) with a Pt loading of 2wt.%, and put it in a stainless steel fixed-bed reactor with an inner diameter of 25mm and a tube length of 1.5m. Both ends are filled with 20-40 mesh quartz sand. The reaction conditions are: 350°C, 6.0MPa, LHSV for 1h -1 , the ratio of the volume of hydrogen to the sum of the volume of Fischer-Tropsch synthetic wax middle distillate and oil is 3000NL / NL. Samples were taken after 24 h of reaction. The liquid hydrocarbon product and water are separated by liquid separation, and the liquid hydrocarbon product is subjected to atmospheric distillation to separate naphtha (fraction less than 150° C.) to obtain biodiesel product (150-450° C. fraction). The liquid hydrocarbon products were analyzed by GC and GC-...

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Abstract

The present invention relates to a method for preparing hydrocarbon biodiesel from biomass as a raw material. In the process, Fischer-Tropsch synthesis wax intermediate fractions (in a distillation range of 150-450 DEG C) and oil are mixed as a raw material for reaction with hydrogen to produce a liquid hydrocarbon product, water and a gas product. In the method, Fischer-Tropsch synthesis wax is obtained by conversion of syngas obtained by vaporization of biomass, and the liquid hydrocarbon product is predominantly iso-paraffins. The process related in the method can be used for producing the iso-paraffins from the biomass as the raw material. The product has the characteristics of high energy density, high stability and low freezing point, and can be used as biodiesel. The process related in the method can relieve oil hydrogenation reaction heat release by mixed feeding of the Fischer-Tropsch synthesis wax and the oil, and reduces the influence of the reaction heat effect on a catalyst, and so that the raw material can be stably transformed into the hydrocarbon biodiesel.

Description

technical field [0001] The present invention relates to the conversion process of biomass, in particular to the process of producing hydrocarbon compounds with biomass as raw material. The hydrocarbons produced in the invention are mainly isoparaffins, which have the characteristics of high energy density, high stability and low freezing point, and can be used as biodiesel. Background technique [0002] With the continuous development of economy and society, the reduction of primary energy such as oil and coal has brought about energy shortage. The price of crude oil and coal has been rising in recent years, which has also affected the price of motor fuel. In addition, since petroleum and coal are both carbon-containing resources and contain elements such as nitrogen and sulfur, carbon dioxide and toxic gases that are harmful to the environment will inevitably be produced during their conversion and product use. Based on this, and also due to political and economic factors,...

Claims

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Application Information

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IPC IPC(8): C10G3/00C10G67/02
CPCY02E50/10Y02P30/20Y02T50/678
Inventor 王从新田志坚曲炜马怀军徐仁顺李鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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