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Method for preparing fuel containing paraffin

A technology of paraffin fuel and paraffin wax, which is applied in the field of solid-liquid hybrid engine propellant preparation, can solve the problems of low drop point and poor mechanical properties of paraffin-containing fuels, and achieve the effects of fewer types of raw materials, improved mechanical properties, and guaranteed uniformity

Inactive Publication Date: 2016-06-22
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] In order to avoid the deficiencies in the prior art and overcome the defects of low dropping point and poor mechanical properties of paraffin-containing fuels that use industrial paraffin as the main raw material, the present invention proposes a preparation method for paraffin-containing fuels; by modifying the paraffin wax, by Chain extension reaction of modified paraffin and curing reaction of binder to prepare new paraffin-containing fuel with higher dropping point and better mechanical properties

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  • Method for preparing fuel containing paraffin

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preparation example Construction

[0026] This embodiment is a preparation method of paraffin-containing fuel.

[0027] refer to figure 1 , the preparation method of the present embodiment containing paraffin fuel, concrete process is:

[0028] The first step. Paraffin wax is modified;

[0029] It is generally believed that the catalytic oxidation of paraffin follows the chain theory of free radicals, and generally can only be carried out under the action of a catalyst or an initiator; once a peroxide is generated, the chain reaction begins. Peroxides can be contacted or non-contacted to further generate acids, ketones, and alcohol organic compounds. When boric acid exists in paraffin, boric acid not only catalyzes the decomposition of peroxide, but also makes it directional decompose to generate alcohol, and also prevents further oxidation of the generated alcohol; using boric acid as catalyst, paraffin and air As the main raw material, the modification of paraffin is realized by introducing hydroxyl groups...

example 1

[0044] 250g of paraffin wax was heated to 210°C, then air with a flow rate of 3L / min was introduced, and 21g of boric acid was slowly added under the condition that the temperature was maintained at 200°C. After adding boric acid for 1 hour, carry out vacuum distillation at a temperature of 180°C and a pressure of 10Pa, pour the residue after vacuum distillation into hot water with a temperature of 80°C and a volume of 600ml, stir for 30 minutes, and take The supernatant was vacuum-dried to obtain modified paraffin.

[0045] 50% of modified paraffin wax, 12% of tris(2-methyl-1-aziridine) phosphine oxide, and 38% of hydroxyl-terminated polybutadiene were weighed as raw materials. First place the modified paraffin in a mixing pot with a temperature of 60°C. After the modified paraffin is melted, add tris(2-methyl-1-aziridine) phosphine oxide and hydroxyl-terminated polybutadiene in sequence according to the formula, and stir Mix for 45 minutes. The mixed liquid slurry is vacuum ...

example 2

[0047] 250g of paraffin wax was heated to 210°C, then air with a flow rate of 3L / min was introduced, and 21g of boric acid was slowly added under the condition that the temperature was maintained at 200°C. After adding boric acid for 1 hour, carry out vacuum distillation at a temperature of 180°C and a pressure of 10Pa, pour the residue after vacuum distillation into hot water with a temperature of 80°C and a volume of 600ml, stir for 30 minutes, and take The supernatant was vacuum-dried to obtain modified paraffin.

[0048] 35% of modified paraffin wax, 10% of tris(2-methyl-1-aziridine) phosphine oxide, 25% of hydroxyl-terminated polybutadiene and 30% of simple aluminum are weighed as raw materials. First place the modified paraffin in a mixing pot with a temperature of 60°C. After the modified paraffin is melted, add tris(2-methyl-1-aziridine)phosphine oxide, hydroxyl-terminated polybutadiene and elemental Aluminum, stir to mix for 45 minutes. The mixed liquid slurry is va...

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Abstract

The invention discloses a method for preparing fuel containing paraffin.The method is based on paraffin modification, catalytic oxidation is conducted on paraffin through chain extension reaction of modified paraffin and curing reaction of a binder, a hydroxyl functional group for chain extension is introduced to paraffin molecules, the molecular weight of paraffin is increased through chain extension reaction of a chain extender and the modified paraffin with the modified paraffin and the binder as main materials, and then the dropping point of the fuel containing paraffin is increased; during preparation of the fuel containing paraffin, the binder is added to the modified paraffin, and the mechanical performance of the fuel containing paraffin is improved through reaction of a curing agent and the binder; due to the fact that the modified paraffin and the binder are polar molecules, delamination does not occur easily during curing, and uniformity of components of the fuel can be guaranteed; the number of varieties of raw materials required for paraffin modification is small, the modification process is simple, the fuel containing paraffin with high dropping point, fuel regression rate and mechanical performance can be prepared at low cost, and the fuel is highly economical.

Description

technical field [0001] The invention relates to the preparation technology of solid-liquid mixed engine propellant, in particular to a preparation method of paraffin-containing fuel. Background technique [0002] Rocket engine is the power device of spacecraft and missiles. With the development and progress of aerospace technology, high reliability, low cost, and environmental protection have become important directions for its future development. The solid-liquid hybrid engine uses solid fuel and liquid oxidant as propellant, which has the following advantages: 1) oxidizer and fuel are stored separately, and the storage and operation safety of the engine are all relatively high; 2) the oxidant of propellant is mainly liquid oxygen, peroxide Hydrogen, the fuel is mainly hydrocarbon fuels such as hydroxyl-terminated polybutadiene, paraffin, polyethylene, etc. The gas is non-toxic and meets the requirements of environmental protection; 3) The thrust adjustment of the engine at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/10C10G73/38
CPCC06D5/10C10G73/38
Inventor 刘林林胡松启刘元敏刘茜
Owner NORTHWESTERN POLYTECHNICAL UNIV
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