Background technology
The density of the rocket engine fuel JP-10 of Military specification MIL-P-87107C-1989 regulation is 0.935g/cm
3(16 ℃), freezing point are-78 ℃, and combustion heat value is 42.1MJ/kg, have the energy density higher than conventional hydrocarbon fuel, are a kind of rocket engine fuels of excellent performance, can be applicable to aircraft such as supersonic fighterplane, cruise missile, rocket.JP-10 is the monergol that is made of hanging type tetrahydrochysene dicyclopentadiene, and purity reaches 98.5%.Present JP-10 synthetic route is: with the bridge dicyclopentadiene is raw material, and hydrogenation becomes bridge-type tetrahydro-dicyclopentadiene, then at AlCl
3, H
2SO
4Become hanging type tetrahydrochysene dicyclopentadiene Deng isomery under the catalysis of catalyzer.The weak point of this method is: each go on foot byproduct of reaction more, need complex separation process; Acid catalysis isomery step environmental pollution is serious, and yield is low.
The applicant discloses a kind of method (CN1907927A) that is prepared hanging dicyclopentadiene by bridge dicyclopentadiene.According to aforesaid method, can prepare hanging dicyclopentadiene by bridge dicyclopentadiene on a large scale, the present invention discloses a kind of by hanging dicyclopentadiene hydrogenation preparing hanging type tetrahydrochysene dicyclopentadiene, the i.e. method of JP-10 rocket engine fuel.
Summary of the invention
The object of the present invention is to provide a kind of method of hanging dicyclopentadiene hydrogenation preparing JP-10 rocket engine fuel, this method is environmentally friendly, yield is high.
The present invention is realized by following technical proposals: a kind of method of hanging dicyclopentadiene hydrogenation preparing JP-10 rocket engine fuel is characterized in that comprising following process:
(1) with the hanging dicyclopentadiene being raw material, adding mass percent with raw material and be 3%~15% the nickel or the hydrogenation catalyst of palladium, is that 0.5~5MPa, temperature are that hydrogenation reaction obtained product in 5~20 hours under 100~160 ℃ the condition at hydrogen pressure; Described nickel catalyzator is a raney nickel catalyst or nickel catalyst carried, and wherein nickel catalyst carried carrier is γ-Al
2O
3Or SiO
2, the quality percentage composition of nickel is 10%~20%; Described palladium catalyst is a load type palladium catalyst, and its carrier is γ-Al
2O
3Or SiO
2Or activated carbon, the quality percentage composition of palladium is 0.3%~5.0%.
(2) product that step (1) is obtained carries out rectification under vacuum and purifies, and is that 5~10kPa, tower still temperature are that 110~140 ℃, tower top temperature are under 50~70 ℃ the condition at pressure, is reached 98.5% JP-10 rocket engine fuel by cat head extraction purity.
The invention has the advantages that: preparation cost is low, the process environmental protection, is easy to scale operation.Fuel purity reaches 98.5%.
Embodiment
The following examples have embodied the process that the present invention describes, but the present invention is not limited to these embodiment.
Embodiment 1
Step 1: the 1000g bridge dicyclopentadiene is joined in the 5000g phenylcarbinol, adding mass content in this solution is 2 of 20ppm, the 6-ditertbutylparacresol, in temperature is that 150 ℃, pressure are reaction 30 minutes under the condition of 0.9MPa, 175 ℃ of fractionation by distillation of normal pressure, obtain the quality percentage composition and the be 97% hanging dicyclopentadiene 548g of (all the other 3% be bridge dicyclopentadiene).
Step 2: with the 548g hanging dicyclopentadiene and the 64g Ni/ γ-Al of step 1 preparation
2O
3It is in the stirred autoclave of 1000mL that catalyzer adds volume, and wherein the quality percentage composition of nickel is 20% in the catalyzer, and stir speed (S.S.) is 750rpm, is that 3MPa, temperature are hydrogenation reaction 20 hours under 130 ℃ the condition at hydrogen pressure; With above-mentioned reactant filtration under diminished pressure, filtrate is added in the rectifying still, be that 10kPa, tower still temperature are rectifying under 140 ℃ the condition at pressure, by the component 490g of 65~70 ℃ of cat head extraction, purity is 98.6% JP-10 rocket engine fuel.
Method according to GB GB2540-81 " petroleum products densitometry " is measured, and the density of JP-10 rocket engine fuel is 0.935g/cm
3(16 ℃); Method according to GB GB2430-81 " rocket engine fuel kryoscopy " is measured, JP-10 rocket engine fuel freezing point is-78 ℃, method according to GB GB384-81 " petroleum products heating-value determination method " is measured, the JP-10 calorific value is 42.1MJ/kg, reaches the standard of Military specification MIL-P-87107C-1989 about the JP-10 rocket engine fuel.
Embodiment 2
Adopt the method identical to prepare hanging dicyclopentadiene with the step 1 of embodiment 1.
With hanging dicyclopentadiene 548g and 82g Ni/SiO
2It is in the stirred autoclave of 1000mL that catalyzer adds volume, and wherein the quality percentage composition of nickel is 10% in the catalyzer, and stir speed (S.S.) 800rpm is that 5MPa, temperature are hydrogenation reaction 16 hours under 160 ℃ the condition at hydrogen pressure; The reactant that obtains adds filtrate in the rectifying still through filtration under diminished pressure, is that 5kPa, tower still temperature are rectification and purification under 110 ℃ of conditions at pressure, and by the component 460g of 50~55 ℃ of cat head extraction, purity is 98.9% JP-10 rocket engine fuel.
Embodiment 3
Adopt the method identical to prepare hanging dicyclopentadiene with the step 1 of embodiment 1.
It is in the stirred autoclave of 1000mL that hanging dicyclopentadiene 548g and 54g raney nickel catalyst are added volume, and stir speed (S.S.) 950rpm is that 2.5MPa, temperature are hydrogenation reaction 11 hours under 140 ℃ the condition at hydrogen pressure; With above-mentioned reactant filtration under diminished pressure, filtrate is added in the rectifying still, be that 8kPa, tower still temperature are rectification and purification under 130 ℃ of conditions at pressure, by the component 478g of 60~65 ℃ of cat head extraction, purity is 98.5% JP-10 rocket engine fuel.
Embodiment 4
Adopt the method identical to prepare hanging dicyclopentadiene with the step 1 of embodiment 1.
With hanging dicyclopentadiene 548g and 27.4g Pd/ γ-Al
2O
3It is in the stirred autoclave of 1000mL that catalyzer adds volume, and wherein the quality percentage composition of palladium is 0.3% in the catalyzer, and stir speed (S.S.) 950rpm is that 4MPa, temperature are hydrogenation reaction 8 hours under 110 ℃ the condition at hydrogen pressure; With above-mentioned reactant filtration under diminished pressure, filtrate is added in the rectifying still, be that 7kPa, tower still temperature are rectification and purification under 125 ℃ of conditions at pressure, by the component 491g of 55~60 ℃ of cat head extraction, purity is 98.7% JP-10 rocket engine fuel.
Embodiment 5
Adopt the method identical to prepare hanging dicyclopentadiene with the step 1 of embodiment 1.
With hanging dicyclopentadiene 548g and 22g Pd/SiO
2It is in the stirred autoclave of 1000mL that catalyzer adds volume, and wherein palladium quality percentage composition is 2% in the catalyzer, and stir speed (S.S.) 950rpm is that 3MPa, temperature are hydrogenation reaction 10 hours under 100 ℃ the condition at hydrogen pressure; With above-mentioned reactant filtration under diminished pressure, filtrate is added in the rectifying still, be that 10kPa, tower still temperature are rectification and purification under 140 ℃ the condition at pressure, by the component 481g of 65~70 ℃ of cat head extraction, purity is 98.6% JP-10 rocket engine fuel.
Embodiment 6
Adopt the method identical to prepare hanging dicyclopentadiene with the step 1 of embodiment 1.
With hanging dicyclopentadiene 548g and 16.4g Pd/ activated carbon catalyst adding volume is in the stirred autoclave of 1000mL, wherein the quality percentage composition of palladium is 5% in the catalyzer, stir speed (S.S.) 750rpm is that 1.5MPa, temperature are hydrogenation reaction 5 hours under 150 ℃ the condition at hydrogen pressure; With above-mentioned reactant filtration under diminished pressure, filtrate is added in the rectifying still, be that 10kPa, tower still temperature are rectification and purification under 140 ℃ the condition at pressure, by the component 501g of 65~70 ℃ of cat head extraction, purity is 98.7% JP-10 rocket engine fuel.