CN101628956B - Preparation method of hydrogenated carbon five petroleum resin - Google Patents
Preparation method of hydrogenated carbon five petroleum resin Download PDFInfo
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- CN101628956B CN101628956B CN2009100909668A CN200910090966A CN101628956B CN 101628956 B CN101628956 B CN 101628956B CN 2009100909668 A CN2009100909668 A CN 2009100909668A CN 200910090966 A CN200910090966 A CN 200910090966A CN 101628956 B CN101628956 B CN 101628956B
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Abstract
The invention relates to a preparation method of hydrogenated carbon five petroleum resin, which is characterized in that crude carbon five petroleum resin obtained by polymerization of carbon five fraction which is a byproduct of ethylene cracking is taken as a raw material, and the steps of dissolution by a solvent, oxidative desulfurization, water washing, first-section low-pressure absorption, second-section high-pressure catalytic hydrogenation treatment and final separation of the solvent are carried out, thereby obtaining a final hydrogenated petroleum resin product.
Description
Technical field
The present invention relates to the petroleum resin technology of preparing; Prepare the method for hydrogenated carbon five petroleum resin for a kind of by thick C 5 petroleum resin, particularly relating to commercially available sulphur, thick C 5 petroleum resin that the chlorine foreign matter content is high is the preparation method that raw material prepares high-quality hydrogenated carbon five petroleum resin.
Background technology
C 5 petroleum resin is a kind of low-molecular-weight thermoplastic resin, by the C5 fraction of ethylene unit by-product at AlCl
3Be polymerized Deng under the catalyst actions such as Friedel-Crafts catalyzer, molecular-weight average between 1000～3000 and oil product, grease, rubber, synthetic resins good consistency is arranged, good be mixed water tolerance, acid resistance of other materials, molten point is low, and binding property is good.Petroleum resin are mainly as tackiness agent, traffic paint, rubber ingredients, coating and printing ink.Domestic commercially available C 5 petroleum resin ubiquity form and aspect are dark, and defective such as smell is smelly, thermostability and oxidative stability are low has limited its range of application.The color of thick C 5 petroleum resin mainly is that the unsaturated link(age) of molecular resin inside forms, and these unsaturated link(age)s also are the reasons that causes petroleum resin products thermostability and light stability to worsen.Hydrogenated carbon five petroleum resin is that the method by hydrogenation makes that unsaturated link(age) is able to saturated in the C 5 petroleum resin, and remaining halogenide in the deresinate, its color, thermostability, consistency etc. are greatly improved, and have good use properties, thereby obtain using more widely.
U.S. Pat 4,384,080 has reported that single component precious metals such as nickel, lead, platinum, iridium, nail prepare the method for hydrogenated petroleum resin as hydrogenation catalyst.U.S. Pat 4,540,480 have introduced a kind of hydrogenation of petroleum resin method, and the active ingredient of catalyst system therefor is for using above-mentioned precious metal composite, and the carrier of catalyzer adopts Al
2O
3, the hydrogenated petroleum resin iodine number≤60g/100g oil that obtains.These methods are in that to reduce aspect the petroleum resin unsaturated link(age) content effect obvious, but improve aspect the form and aspect of resin not very good, this be because the color of petroleum resin remove have with unsaturated link(age) outside the Pass, also have at present as yet not other chromophores of understanding.
CN1,887,927A has announced a kind of preparation method of C 5 hydrogenated petroleum resin, C5 fraction with the cracking of ethylene by-product is a raw material, through raw materials pretreatment, through neutralizing, wash, remove impurity, carry out hydrogenation reaction in the presence of hydrogenation catalyst again, removing the impurity operation is that crude resin removes chlorion impurity.There are shortcomings such as toxin immunity is poor, the life-span is short in the noble metal catalyst that hydrogenation reaction is used, and impurity does not remove in washing process the clean chlorion in the usually thick C 5 petroleum resin raw material, also contains sulfide.All kinds of single noble metal catalyst work-ing life long reason first catalyzer easy poisoning and deactivation, the especially sulfide of studies show that are to the toxication of noble metal catalyst; It two is easy coalescent inactivations of precious metal crystal grain at high temperature, and this just causes catalyzer cost height, influences the economic benefit of product.
The at present domestic commercially available thick C 5 petroleum resin that is mainly, and the price of high-quality hydrogenated carbon five petroleum resin is equivalent to the twice of thick C5 petroleum resin, the hydrogenated petroleum resin sales situation is good always.Thick C 5 petroleum resin source is abundant on the market, as raw material it is carried out further deep processing and produces hydrogenated carbon five petroleum resin, can significantly improve its value.Commercially available thick C 5 petroleum resin form and aspect are dark, and foreign matter content height such as sulphur, chlorine adopt existing technology to carry out processing treatment and can not obtain form and aspect ideal hydrogenated carbon five petroleum resin.
Summary of the invention
At the deficiencies in the prior art, the purpose of this invention is to provide and a kind ofly prepared the preparation method of hydrogenated carbon five petroleum resin by thick C 5 petroleum resin, its objective is to obtain the petroleum resin products that form and aspect are shallow, the bromine valency is low, softening temperature is high, and have better economic benefits.Overcoming with commercially available thick C 5 petroleum resin is that raw material adds man-hour owing to the high problem that can not get the excellent hydrogenated carbon five petroleum resin of form and aspect of foreign matter content.
The present invention is a kind of preparation method of hydrogenated carbon five petroleum resin, it is characterized in that:
The thick C 5 petroleum resin that obtains with the C5 fraction polymerization of cracking of ethylene by-product is a raw material, through dissolution with solvents, oxidation sweetening, washing are handled through one section low pressure absorption, two sections high-pressure hydrogenations again, isolate solvent more at last and obtain final hydrogenated petroleum resin product;
Described solvent is chain or cyclic stable hydrocarbon, hydrocarbon mixture, is selected from normal heptane, hexanaphthene, positive flow silane, mineral essential oil or reforming raffinate oil, and the mass ratio of resin and solvent is 1: 1.2～1: 3;
Described water washing process adopt deionized water under 85～95 ℃ to oxidation sweetening after resin liquid carry out carrying out washing treatment, deionized water and resin liquid volume ratio are 1: 1～5: 1, washing times is 1～3 time, all will separate after each washing and remove deionized water;
Concrete steps comprise:
1) oxidation sweetening: the employing oxidative desulfurization techniques removes the sulfide in the thick C 5 petroleum resin, and oxygenant is the hydrogen peroxide of lower concentration, and hydrogen peroxide concentration is 1%～20%, 40～90 ℃ of oxidizing temperatures;
2) one section low pressure absorption: chlorine is realized refining removing from adopting one section low pressure to adsorb in impurity and remaining trace sulfide in the crude resin, and adsorptive pressure is 0.2～1.0MPa, and adsorption temp is 80～280 ℃, and removing the impurity absorption agent is the improved silica sorbent material;
3) two sections high-pressure hydrogenations: two sections high-pressure hydrogenations adopt noble metal hydrogenation catalyst, and high-pressure hydrogenation catalyst component weight ratio: aluminum oxide is 80～90 parts in the support of the catalyst, 10～20 parts of titanium oxide; In vehicle weight, precious metals pd is 0.4～1.2 part, and transition metal is 1.0～8.0 parts; Hydrogenation catalyst adopts the cladding process preparation, the starting material of palladium and transition metal adopts corresponding muriate or nitrate, carry out the preparation of ball-aluminium oxide carrier earlier, again with palladium and transition metal activity component impregnation on titanium dioxide powder, spray on the alumina supporter the activated hydrogenation catalyst that obtains; Catalyst surface area is 60～140m
2/ g, pore volume are 0.4～0.6ml/g; Hydrogenation reaction pressure is 8.0～20.0MPa, and temperature of reaction is 250～350 ℃, and the liquid air speed is 0.5～2h
-1
4) solvent separates with sold resin: adopting at present, industry flash distillation, steam stripping technique or flash distillation, reduced pressure distillation technique commonly used separates the solvent extraction sold resin.
Preparation method according to a kind of hydrogenated carbon five petroleum resin of the present invention is characterized in that: concrete steps are:
1) oxidation sweetening: the employing oxidative desulfurization techniques removes the sulfide in the thick C 5 petroleum resin, and oxygenant is the hydrogen peroxide of lower concentration, and hydrogen peroxide concentration is 2%～10%, and oxidizing temperature is 50～70 ℃;
2) one section low pressure absorption: chlorine is realized refining removing from adopting one section low pressure to adsorb in impurity and remaining trace sulfide in the crude resin, adsorptive pressure is 0.2～0.6MPa, adsorption temp is 120～230 ℃, and removing the impurity absorption agent is the improved silica sorbent material;
3) two sections high-pressure hydrogenations: two sections high-pressure hydrogenations adopt noble metal hydrogenation catalyst, and high-pressure hydrogenation catalyst component weight ratio: aluminum oxide is 85 parts in the support of the catalyst, 15 parts of titanium oxide; In vehicle weight, precious metals pd is 0.6～1 part, and transition metal is 2.0～6.0 parts; Catalyst surface area is 80～120m
2/ g, pore volume are 0.4～0.5ml/g; Hydrogenation reaction pressure is 12～18MPa, and temperature of reaction is 270～320 ℃, and the liquid air speed is 0.8～1.8h
-1
The present invention found through experiments, increase oxidation sweetening and one section low pressure refining with adsorbents operation, very favourable to prolonging hydrogenation catalyst work-ing life and improving the product form and aspect, the adaptability of the thick C 5 petroleum resin different for the source, that foreign matter content is different has raising significantly.
The present invention discovers that the interpolation of part titanium dioxide can improve the hydrogenation activity and the anti-poisoning capability of C 5 petroleum resin hydrogenation catalyst in the support of the catalyst, can obviously prolong life of catalyst.
Hydrogenation catalyst adopts the cladding process preparation, among the present invention in the hydrogenation catalyst active ingredient on carrier, be even shell and distribute.
The invention has the beneficial effects as follows: key of the present invention is that the application of oxidation sweetening and refining with adsorbents operation and the catalyzer that is adopted selected suitable carrier and preparation method.The common form and aspect of domestic commercially available thick C 5 petroleum resin 〉=3, sulphur content＞10 μ g/g, cl content＞20 μ g/g, the contriver found through experiments, this inventive method is applied to the further deep processing of domestic commercially available thick C 5 petroleum resin is produced in the high-quality hydrogenated carbon five petroleum resin process, preferably resolve because sulphur in the thick C 5 petroleum resin raw material, the chlorine foreign matter content is high and the problem that can't adopt noble metal hydrogenation to handle, product not only unsaturated link(age) content obviously reduces, and outward appearance is colourless; Resin yield height in addition is being that raw material adds man-hour weight resin yield and is not less than 90% with thick C 5 petroleum resin.
Embodiment
Describe the present invention in detail with specific embodiment below, but embodiment does not limit the scope of the invention.
Embodiment:
Adopt cladding process to prepare hydrogenation catalyst.Catalyst carrier alumina weight is 85 parts, in 100 parts of vehicle weight, gets 0.8 part of palladium, 2 parts of transiting metal nickels.Carry out the preparation of alumina supporter earlier, its particle diameter is Ф 2～3mm sphere; 15 parts of titanium dioxide powders impregnated in the aqueous solution of Palladous chloride and nickelous nitrate, be the underflow shape and be coated on the spherical carrier of aluminum oxide, obtaining hydrogenation catalyst of the present invention through 120 ℃ of oven dry, 550 ℃ of calcination activations.
With thick C 5 petroleum resin (No. 5 looks of form and aspect of buying on the market, 110 ℃ of softening temperatures) dissolve with mineral oil, the weight ratio of thick C 5 petroleum resin and mineral oil is 1: 1.5, and sulphur content is 25.3 μ g/g in the solvent-laden thick C 5 petroleum resin, and cl content is 46.7 μ g/g.Use 5%H after the dissolving
2O
2Carry out oxide treatment, oxidizing temperature is 80 ℃, and oxidization time 1 hour is handled through washing again; To handle the thick C 5 petroleum resin in back in the reactor of improved silica is housed, 210 ℃ after absorption dechlorination desulfurization etc. removes impurity, in the fixed-bed reactor of hydrogenation catalyst are housed, carry out hydrogenation reaction, the hydrogenation reaction temperature is 280 ℃, pressure is 15MPa, liquid air speed 1h
-1, remove solvent and obtain water white hydrogenated carbon five petroleum resin product, 105 ℃ of softening temperatures, bromine valency 0.7gBr through flash distillation, stripping processing again
2/ 100g oil, Gardner (Gardner) form and aspect are No. 0 look, the weight resin yield is 92%.
Comparative example 1:
With thick C 5 petroleum resin (No. 5 looks of form and aspect of buying on the market, 110 ℃ of softening temperatures) dissolve with mineral oil, the weight ratio of thick C 5 petroleum resin and mineral oil is 1: 1.5, dissolving is after the washing processing, thick C 5 petroleum resin does not adsorb the impurity removal operation, directly carries out hydrogenation reaction in the fixed-bed reactor of hydrogenation catalyst of the present invention are housed, and the hydrogenation reaction temperature is 280 ℃, pressure is 15MPa, liquid air speed 1h
-1, remove solvent and obtain the hydrogenated carbon five petroleum resin product, 106 ℃ of softening temperatures, bromine valency 3.6gBr through flash distillation, stripping processing again
2/ 100g oil, Gardner (Gardner) form and aspect are No. 6 looks.
Comparative example 2:
The thick C 5 petroleum resin of buying on the market (No. 5 looks of form and aspect, 110 ℃ of softening temperatures) is dissolved with mineral oil, and the weight ratio of thick C 5 petroleum resin and mineral oil is 1: 1.5, and dissolving is after the washing processing; Thick C 5 petroleum resin adsorbs impurity removal in improved silica sorbent reactions device is housed handles, carry out hydrogenation reaction in the fixed-bed reactor through hydrogenation catalyst of the present invention is housed again, the hydrogenation reaction temperature is 280 ℃, and pressure is 15MPa, liquid air speed 1h
-1, remove solvent and obtain the hydrogenated carbon five petroleum resin product, 103 ℃ of softening temperatures, bromine valency 1.6gBr through flash distillation, stripping processing again
2/ 100g oil, Gardner (Gardner) form and aspect are No. 2 looks.
Comparative example 3:
The thick C 5 petroleum resin of buying on the market (No. 5 looks of form and aspect, 110 ℃ of softening temperatures) is dissolved with mineral oil, and the weight ratio of thick C 5 petroleum resin and mineral oil is 1: 1.5, and 5%H is adopted in the dissolving back
2O
2Carry out oxide treatment, oxidizing temperature is 80 ℃, and oxidization time 1 hour is handled through washing again; To handle the thick C 5 petroleum resin in back in the reactor of improved silica is housed, at 210 ℃ after absorption dechlorination desulfurization etc. removes impurity, carry out hydrogenation reaction in the fixed-bed reactor of single component hydrogenation catalyst again through simple alumina load palladium 1.0% is housed, the hydrogenation reaction temperature is 280 ℃, pressure is 15MPa, liquid air speed 1h
-1, remove solvent and obtain the hydrogenated carbon five petroleum resin product, 103 ℃ of softening temperatures, bromine valency 0.9gBr through flash distillation, stripping processing again
2/ 100g oil, Gardner (Gardner) form and aspect are No. 1 look.
Through contrast, reach a conclusion: is the hydrogenated carbon five petroleum resin that raw material production goes out by the embodiment of the invention with thick C 5 petroleum resin, and Gardner (Gadner) form and aspect are No. 0 look.By the hydrogenated carbon five petroleum resin that comparative example is produced, Gardner (Gardner) form and aspect height.
Claims (2)
1. the preparation method of a hydrogenated carbon five petroleum resin is characterized in that:
The thick C 5 petroleum resin that obtains with the C5 fraction polymerization of cracking of ethylene by-product is a raw material, through dissolution with solvents, oxidation sweetening, water washing process are handled through one section low pressure absorption, two sections high-pressure hydrogenations again, isolate solvent more at last and obtain final hydrogenated petroleum resin product;
Described solvent is chain or cyclic stable hydrocarbon, hydrocarbon mixture, is selected from normal heptane, hexanaphthene, positive flow silane, mineral essential oil or reforming raffinate oil, and the mass ratio of resin and solvent is 1: 1.2～1: 3;
Described water washing process adopt deionized water under 85～95 ℃ to oxidation sweetening after resin liquid carry out carrying out washing treatment, deionized water and resin liquid volume ratio are 1: 1～5: 1, washing times is 1～3 time, all will separate after each washing and remove deionized water;
Concrete steps comprise:
1) oxidation sweetening: the employing oxidative desulfurization techniques removes the sulfide in the thick C 5 petroleum resin, and oxygenant is the hydrogen peroxide of lower concentration, and hydrogen peroxide concentration is 1%～20%, 40～90 ℃ of oxidizing temperatures;
2) one section low pressure absorption: chlorion impurity and remaining trace sulfide adopt one section low pressure to adsorb and realize refining removing in the crude resin, and adsorptive pressure is 0.2～1.0MPa, and adsorption temp is 80～280 ℃, and removing the impurity absorption agent is the improved silica sorbent material;
3) two sections high-pressure hydrogenations: two sections high-pressure hydrogenations adopt noble metal hydrogenation catalyst, and high-pressure hydrogenation catalyst component weight ratio: aluminum oxide is 80～90 parts in the support of the catalyst, 10～20 parts of titanium oxide; In vehicle weight, precious metals pd is 0.4～1.2 part, and transition metal is 1.0～8.0 parts; Hydrogenation catalyst adopts the cladding process preparation, the starting material of palladium and transition metal adopts corresponding muriate or nitrate, carry out the preparation of ball-aluminium oxide carrier earlier, again with palladium and transition metal activity component impregnation on titanium dioxide powder, spray on the alumina supporter the activated hydrogenation catalyst that obtains; Catalyst surface area is 60～140m
2/ g, pore volume are 0.4～0.6ml/g; Hydrogenation reaction pressure is 8.0～20.0MPa, and temperature of reaction is 250～350 ℃, and the liquid air speed is 0.5～2h-1;
4) solvent separates with sold resin: adopting at present, industry flash distillation, steam stripping technique or flash distillation, reduced pressure distillation technique commonly used separates the solvent extraction sold resin.
2. according to the described preparation method of claim 1, it is characterized in that: concrete steps are:
1) oxidation sweetening: the employing oxidative desulfurization techniques removes the sulfide in the thick C 5 petroleum resin, and oxygenant is the hydrogen peroxide of lower concentration, and hydrogen peroxide concentration is 2%～10%, and oxidizing temperature is 50～70 ℃;
2) one section low pressure absorption: chlorion impurity and remaining trace sulfide adopt one section low pressure to adsorb and realize refining removing in the crude resin, adsorptive pressure is 0.2～0.6MPa, adsorption temp is 120～230 ℃, and removing the impurity absorption agent is the improved silica sorbent material;
3) two sections high-pressure hydrogenations: two sections high-pressure hydrogenations adopt noble metal hydrogenation catalyst, and high-pressure hydrogenation catalyst component weight ratio: aluminum oxide is 85 parts in the support of the catalyst, 15 parts of titanium oxide; In vehicle weight, precious metals pd is 0.6～1 part, and transition metal is 2.0～6.0 parts; Catalyst surface area is 80～120m
2/ g, pore volume are 0.4～0.5ml/g; Hydrogenation reaction pressure is 12～18MPa, and temperature of reaction is 270～320 ℃, and the liquid air speed is 0.8～1.8h-1.
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| CN106540708A (en) * | 2016-10-25 | 2017-03-29 | 张峰 | A kind of C5Hydrogenation of petroleum resin catalyst and preparation method thereof |
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| CN103772610B (en) * | 2012-10-24 | 2016-05-18 | 中国石油化工股份有限公司 | A kind of oxidative decoloration process for purification of C5/C9 Petropols |
| CN106268725B (en) * | 2015-08-10 | 2018-08-21 | 中国石油化工股份有限公司 | The hydrogenation catalyst and preparation method and application of the DCPD resins of dicyclopentadiene hot polymerization in cracking of ethylene carbon 9 |
| CN105254809A (en) * | 2015-10-19 | 2016-01-20 | 高大元 | Method for removing sulfur in petroleum resin |
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| CN106540708A (en) * | 2016-10-25 | 2017-03-29 | 张峰 | A kind of C5Hydrogenation of petroleum resin catalyst and preparation method thereof |
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