CN107163983A - 一种再生性柴油燃料的制备方法 - Google Patents
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- 239000002283 diesel fuel Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000011973 solid acid Substances 0.000 claims abstract description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000004913 activation Effects 0.000 claims abstract description 13
- 239000010913 used oil Substances 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
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- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- VCRYGHPVKURQMM-UHFFFAOYSA-N methane;platinum Chemical compound C.[Pt] VCRYGHPVKURQMM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000004519 grease Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
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- 238000006460 hydrolysis reaction Methods 0.000 claims description 10
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- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
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- 238000005406 washing Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 238000007171 acid catalysis Methods 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000012263 liquid product Substances 0.000 abstract 2
- 238000003763 carbonization Methods 0.000 abstract 1
- 238000006114 decarboxylation reaction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 238000003756 stirring Methods 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
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- 238000005255 carburizing Methods 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 5
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- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 235000019737 Animal fat Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
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- 239000003245 coal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 150000002148 esters Chemical group 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000007172 homogeneous catalysis Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only
- C10G67/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/185—Phosphorus; Compounds thereof with iron group metals or platinum group metals
- B01J27/1856—Phosphorus; Compounds thereof with iron group metals or platinum group metals with platinum group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
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- B01J35/30—
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
- C10G2300/1007—Used oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/4006—Temperature
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/4012—Pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/70—Catalyst aspects
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
Abstract
本发明涉及一种再生性柴油燃料的制备方法，属于再生燃料技术领域。本发明利用磷酸活化玉米芯，经碳化后与石墨化碳、铂炭研磨混合，制得复合碳粉末，再经磺化处理后制成固体酸催化剂，再将废机油除杂后与地沟油混合，在高温液态水中水解成游离脂肪酸，再经加氢反应后脱羧，制备再生性柴油燃料。本发明以廉价的废机油和地沟油为原料，利用废机油和地沟油的协同作用，促进液态产物油的生成同时促进液态产物油的脱氮和脱氧，并利用固体酸催化剂中的碳基载体，脱除产物油中的杂质，有效提高制备的再生性柴油燃料品质。
Description
技术领域
本发明涉及一种再生性柴油燃料的制备方法，属于再生燃料技术领域。
背景技术
能源危机和环境巧染是制约当今社会可持续发展的重要因素。煤、石油、天然气等化石燃料在地球的储量非常有限，据经巧学家和科学家的普遍估计，到本世纪中叶，石油资源将开采殆思。能源为人类带来光明与为量的同时，化伴随着严重的环境问题。温窒效应是目前最为严重的环境问题之一，气候学家曾警告说，地球的二氧化碳排放量如果保持在目前水平，将会出现严重的环境问题。因此，寻求可替代化石燃料的绿色能源成为当前研究的热点。
基于石油能源紧缺及其不可再生性，作为石油的替代品—生物柴油，近年来倍受关注。生物柴油是指以油料作物、野生油料植物和工程微藻等水生植物油脂以及动物油脂、餐饮垃圾油等为原料油，通过酯交换工艺制成的可代替石化柴油的再生性柴油燃料。再生性柴油燃料利用生物本身的有机物质直接转化为能源物，因其具备低碳、环保的优势，受到全球各围的普遍关注。
目前，工业上生产再生性柴油主要采用的是化学催化法，化学催化法中均相催化虽反应速度快、转化率高，但后处理十分复杂，产生大量工业废水，且油脂加氢脱氧过程氢耗量过大，成本过高。因此，研究出低氢耗高效环保的再生性柴油燃料显得尤为重要。
发明内容
本发明所要解决的技术问题：针对目前生产再生性柴油后处理十分复杂，产生大量工业废水，且油脂加氢脱氧过程氢耗量过大，成本过高的问题，提供了一种再生性柴油燃料的制备方法。
为解决技术问题，本发明采用的技术方案是：
一种再生性柴油燃料的制备方法，其特征在于复合油脂水解后的油相在固体酸催化剂的催化作用以及5～6MPa氢气氛围下，加热至200～220℃反应2～3h，再加热至350～360℃反应5～6h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液即可。
所述的复合油脂为废机油和地沟油按质量比1:5～5:1混合，过滤后经活性白土和碳酸钠溶液吸附脱酸后制得。
所述的水解反应为复合油脂与水按体积比0.8～1.2混合后密封，并加热至200～210℃水解反应6～8h。
所述的固体酸催化剂为复合碳粉末与质量分数为98%硫酸溶液按质量比1:12～1:36混合密封，并加热至100～110℃磺化反应3～5h，水洗干燥后制得。
所述的复合碳粉末按重量份数计，包括2～3份酸活化多孔活性炭，2～3份石墨化碳，1～2份铂炭。
所述的酸活化多孔活性炭为玉米芯经质量分数为80%磷酸溶液活化后装入马弗炉中，加热至375～400℃碳化反应40～50min制得。
本发明的有益技术效果是：
本发明以廉价的废机油和地沟油为原料，通过吸附脱酸，减少后处理难度，再利用废机油和地沟油的协同作用，促进其在高温液态水中水解成游离脂肪酸的生成同时促进游离脂肪酸的脱氮和脱氧，降低氢耗量，并利用碳基固体酸催化剂的疏松结构以及其含有的磺酸基、羟基等极性基团容易在反应中形成局部热点，从而加速反应，体现更高效的催化活性，进一步降低氢耗量，同时固体酸催化剂中的碳基载体，脱除产物油中的杂质，进一步降低后处理难度，有效提高制备的再生性柴油燃料品质。
具体实施方式
称取30～50g玉米芯，浸泡在200～300mL质量分数为80%磷酸溶液中10～20min，过滤取出玉米芯后自然风干并装入马弗炉中，加热至375～400℃碳化反应40～50min，冷却至室温后得酸活化多孔活性炭，称取2～3g酸活化多孔活性炭，2～3g石墨化碳，1～2g铂炭，装入研钵中研磨，过200目筛，得复合碳粉末；称取3～5g复合碳粉末，与30～50mL质量分数为98%硫酸溶液混合均匀后装入烧瓶中，密封后加热至100～110℃磺化反应3～5h，冷却至室温后加入去离子水稀释至3～5L，随后过滤，用去离子水洗涤滤渣至洗涤液呈中性，再将滤渣置于干燥箱中，在105～110℃下干燥至恒重，得固体酸催化剂；按质量比1:5～5:1量取预处理废机油与地沟油混合，以300～400r/min搅拌30～40min，得混合油，量取500～600mL混合油，过滤除杂后向滤液中加入30～50g活性白土，以300～400r/min搅拌1～2h，随后加入100～200mL质量分数为1%碳酸钠溶液，持续搅拌1～2h后，静置3～5h后收集上层油相，得复合油脂；量取100～120mL复合油脂，100～120mL去离子水装入烧瓶中，密封后加热至200～210℃水解反应6～8h，冷却至室温后转入离心机中，以6000～8000r/min离心分离20～30min，收集上层油相，将上层油相与3～5g固体酸催化剂装入高压反应器中，在5～6MPa氢气氛围下，以600～800r/min搅拌加热至200～220℃反应2～3h，继续搅拌加热至350～360℃反应5～6h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液得再生性柴油燃料。
实例1
称取50g玉米芯，浸泡在300mL质量分数为80%磷酸溶液中20min，过滤取出玉米芯后自然风干并装入马弗炉中，加热至400℃碳化反应50min，冷却至室温后得酸活化多孔活性炭，称取3g酸活化多孔活性炭，3g石墨化碳，2g铂炭，装入研钵中研磨，过200目筛，得复合碳粉末；称取5g复合碳粉末，与50mL质量分数为98%硫酸溶液混合均匀后装入烧瓶中，密封后加热至110℃磺化反应5h，冷却至室温后加入去离子水稀释至5L，随后过滤，用去离子水洗涤滤渣至洗涤液呈中性，再将滤渣置于干燥箱中，在110℃下干燥至恒重，得固体酸催化剂；按质量比5:1量取预处理废机油与地沟油混合，以400r/min搅拌40min，得混合油，量取600mL混合油，过滤除杂后向滤液中加入50g活性白土，以400r/min搅拌2h，随后加入200mL质量分数为1%碳酸钠溶液，持续搅拌2h后，静置5h后收集上层油相，得复合油脂；量取120mL复合油脂，120mL去离子水装入烧瓶中，密封后加热至210℃水解反应8h，冷却至室温后转入离心机中，以8000r/min离心分离30min，收集上层油相，将上层油相与5g固体酸催化剂装入高压反应器中，在6MPa氢气氛围下，以800r/min搅拌加热至220℃反应3h，继续搅拌加热至360℃反应6h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液得再生性柴油燃料。
实例2
称取30g玉米芯，浸泡在200mL质量分数为80%磷酸溶液中10min，过滤取出玉米芯后自然风干并装入马弗炉中，加热至375℃碳化反应40min，冷却至室温后得酸活化多孔活性炭，称取2g酸活化多孔活性炭，2g石墨化碳，1g铂炭，装入研钵中研磨，过200目筛，得复合碳粉末；称取3g复合碳粉末，与30mL质量分数为98%硫酸溶液混合均匀后装入烧瓶中，密封后加热至100℃磺化反应3h，冷却至室温后加入去离子水稀释至3L，随后过滤，用去离子水洗涤滤渣至洗涤液呈中性，再将滤渣置于干燥箱中，在105℃下干燥至恒重，得固体酸催化剂；按质量比1:5量取预处理废机油与地沟油混合，以300r/min搅拌30min，得混合油，量取500mL混合油，过滤除杂后向滤液中加入30g活性白土，以300r/min搅拌1h，随后加入100mL质量分数为1%碳酸钠溶液，持续搅拌1h后，静置3h后收集上层油相，得复合油脂；量取100mL复合油脂，100mL去离子水装入烧瓶中，密封后加热至200℃水解反应6h，冷却至室温后转入离心机中，以6000r/min离心分离20min，收集上层油相，将上层油相与3g固体酸催化剂装入高压反应器中，在5MPa氢气氛围下，以600r/min搅拌加热至200℃反应2h，继续搅拌加热至350℃反应5h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液得再生性柴油燃料。
实例3
称取40g玉米芯，浸泡在250mL质量分数为80%磷酸溶液中15min，过滤取出玉米芯后自然风干并装入马弗炉中，加热至380℃碳化反应45min，冷却至室温后得酸活化多孔活性炭，称取2g酸活化多孔活性炭，3g石墨化碳，2g铂炭，装入研钵中研磨，过200目筛，得复合碳粉末；称取4g复合碳粉末，与40mL质量分数为98%硫酸溶液混合均匀后装入烧瓶中，密封后加热至105℃磺化反应4h，冷却至室温后加入去离子水稀释至4L，随后过滤，用去离子水洗涤滤渣至洗涤液呈中性，再将滤渣置于干燥箱中，在107℃下干燥至恒重，得固体酸催化剂；按质量比1:1量取预处理废机油与地沟油混合，以350r/min搅拌35min，得混合油，量取550mL混合油，过滤除杂后向滤液中加入40g活性白土，以350r/min搅拌2h，随后加入150mL质量分数为1%碳酸钠溶液，持续搅拌2h后，静置4h后收集上层油相，得复合油脂；量取110mL复合油脂，110mL去离子水装入烧瓶中，密封后加热至205℃水解反应7h，冷却至室温后转入离心机中，以7000r/min离心分离25min，收集上层油相，将上层油相与4g固体酸催化剂装入高压反应器中，在6MPa氢气氛围下，以700r/min搅拌加热至210℃反应3h，继续搅拌加热至355℃反应6h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液得再生性柴油燃料。
将实例1至实例3制备得到的柴油燃料按照欧盟EN14214-2005检测标准进行检测，检测数据如表1。
表1
| 检测项目 | 检测标准 | 实例1 | 实例2 | 实例3 |
| 硫质量分数/% | ≤10×10-6 | 8×10-6 | 9.5×10-6 | 9×10-6 |
| 氧化安定性（110℃）/h | ≥6 | 6.5 | 7.1 | 6.8 |
| 总杂质质量分数（mg·kg-1） | ≤24 | 22 | 21 | 23 |
从表1可看出，本发明制备的柴油符合欧盟标准，杂质含量较小，可广泛适用。
Claims (6)
1.一种再生性柴油燃料的制备方法，其特征在于复合油脂水解后的油相在固体酸催化剂的催化作用以及5～6MPa氢气氛围下，加热至200～220℃反应2～3h，再加热至350～360℃反应5～6h，冷却至室温后，用0.45μm微孔滤膜过滤，收集滤液即可。
2.如权利要求1所述的一种再生性柴油燃料的制备方法，其特征在于，所述的复合油脂为废机油和地沟油按质量比1:5～5:1混合，过滤后经活性白土和碳酸钠溶液吸附脱酸后制得。
3.如权利要求1所述的一种再生性柴油燃料的制备方法，其特征在于，所述的水解反应为复合油脂与水按体积比0.8～1.2混合后密封，并加热至200～210℃水解反应6～8h。
4.如权利要求1所述的一种再生性柴油燃料的制备方法，其特征在于，所述的固体酸催化剂为复合碳粉末与质量分数为98%硫酸溶液按质量比1:12～1:36混合密封，并加热至100～110℃磺化反应3～5h，水洗干燥后制得。
5.如权利要求4所述的一种再生性柴油燃料的制备方法，其特征在于，所述的复合碳粉末按重量份数计，包括2～3份酸活化多孔活性炭，2～3份石墨化碳，1～2份铂炭。
6.如权利要求5所述的一种再生性柴油燃料的制备方法，其特征在于，所述的酸活化多孔活性炭为玉米芯经质量分数为80%磷酸溶液活化后装入马弗炉中，加热至375～400℃碳化反应40～50min制得。
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