Preparation method of high-density liquid hydrocarbon fuel

A high-density liquid, hydrocarbon fuel technology, applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, petroleum industry, etc., can solve problems such as rising costs

Inactive Publication Date: 2017-06-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these routes adopt a discontinuous process, which requires the separation of the catalyst and the rectification of the product in the two-step reaction, which will lead to an increase in cost

Method used

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  • Preparation method of high-density liquid hydrocarbon fuel
  • Preparation method of high-density liquid hydrocarbon fuel
  • Preparation method of high-density liquid hydrocarbon fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-14

[0028] 1. Preparation of catalyst:

[0029] 1) Preparation of solid acid catalysts: Nafion and Amberlyst resins, Y-type molecular sieves, montmorillonite K-10 and KSF are commercial catalyst products purchased directly.

[0030] Phosphorylated zirconia (ZrP) catalyst is mixed with 1 mol / L zirconium oxychloride and ammonium dihydrogen phosphate aqueous solution at a volume ratio of 2:1, and the obtained precipitate is washed and filtered repeatedly and then dried at 120°C for 10 h. Then baked at 400 °C for 4 h.

[0031] 2) Preparation of solid base catalysts: alkaline earth oxides (MgO, CaO, SrO) and rare earth oxides (La 2 o 3 , CeO 2 ) respectively by the corresponding nitrate in N 2 Calcined under atmosphere for 8h. Alkaline earth and rare earth mixed oxides were added dropwise with 20 wt% ammonia water to two nitrate solutions mixed in a certain molar ratio by co-precipitation method, the pH was adjusted to 9, stirring was continued for 1 h, dried at 80°C overnight, an...

Embodiment 10

[0037] Sedimentation and precipitation method: prepare 0.14M nickel nitrate solution and divide it into two parts A and B in equal volume, and add one of H-ZSM-5, H-MOR, silicon-aluminum composite carrier, H-β molecular sieve, and alumina to A and an appropriate amount of concentrated nitric acid, add 0.42 M urea to B, slowly drop B into A in a water bath at 80°C, stir for 10 h after raising the temperature to 90°C, filter and wash, dry at 80°C overnight, and roast in air at 500°C for 2 h. The catalyst was reduced in situ with hydrogen at 500 °C for 2 h in a fixed bed. (see table 1, embodiment 11-15)

Embodiment 11-15

[0038] Table 1 Supported metal A / X type bifunctional catalyst

[0039]

[0040] 2. Aldol condensation reaction: In a fixed-bed reactor, put 1.0 g of catalyst into the reaction tube, keep the pressure in the reactor at 0.1 MPa, and the hydrogen flow rate at 150 mL / min. Pump into the reactor at 0.10 mL / min. The reaction results are shown in Table 2.

[0041] Table 2 Cyclopentanone Aldol Condensation Results

[0042]

[0043]

[0044] Table 3 Aldol condensation reaction target product structure

[0045]

[0046] As can be seen from Table 2, under the action of a solid acid catalyst, the dimer and trimer of cyclopentanone are easy to continue to condense to generate high polymers; , Tripolymer-based. Among them, solid alkali magnesium aluminum hydrotalcite, lithium aluminum hydrotalcite terpolymer (C 15 Tricycloalkane precursor) yield is higher. Figure 1-4 The C-HMR and H-NMR charts of cyclopentanone trimerization and dimerization products, respectively, prove t...

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Abstract

The invention relates to a preparation method of high-density liquid hydrocarbon fuel. The method totally comprises two parts: (1) on a first catalyst bed layer of a fixed bed continuous reactor, cyclopentanone (furfural water phase selective hydrogenation products) takes a self aldol condensation (and hydrogenation) reaction under the catalysis effect of acid / alkali catalysts or metal doping solid alkali to obtain oxygen-containing organic compounds with the carbon number being 15 and 10; (2) on a second catalyst bed layer of the fixed bed continuous reactor, the products generated on the first catalyst bed layer take a further hydrodeoxygenation reaction under the conditions of low temperature and no solvent under the catalysis effect of load metal A / X type bifunctional catalysts to obtain polycyclic hydrocarbon fuel with the carbon number being 15 and 10. The high-density liquid fuel (C15 tri-cycloalkane: 0.917 g / cm<3>; C10 bi-cycloalkane: 0.866g / cm<3>) has the advantages that the energy carried by an aircraft can be effectively improved; the engine oil consumption rate is reduced; the requirements of high flight speed, great load and long emitting range can be met.

Description

technical field [0001] The invention relates to a high-density aviation biofuel synthesis route based on lignocellulose-derived platform compounds that is completely independent of fossil energy, which specifically includes two steps: 1) in the first catalyst bed of a fixed-bed continuous reactor, the ring Pentanone (selective hydrogenation product of furfural) is catalyzed by acid / base catalysts or metal-doped solid bases to obtain oxygen-containing organic compounds with carbon numbers of 15 and 10 by self-aldol condensation (and hydrogenation) ; 2) in the second catalyst bed of the fixed-bed continuous reactor, the first catalyst bed generates the product under the promotion of the loaded metal A / X type bifunctional catalyst, and is added at a lower temperature and without solvent Hydrodeoxygenation reaction to obtain high-density aviation fuels of polycyclic hydrocarbons with carbon numbers of 15 and 10. Compared with the previously reported work, this work is the first t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02P30/20C10G3/44C10G3/50
Inventor 张涛盛雪茹李宁李广亿王爱琴王晓东丛昱
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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