CN112295564A - 防老剂6ppd生产中废溶剂加氢的催化剂及其应用 - Google Patents
防老剂6ppd生产中废溶剂加氢的催化剂及其应用 Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 84
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000010887 waste solvent Substances 0.000 title claims abstract description 25
- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 24
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 40
- 229910052759 nickel Inorganic materials 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 230000003197 catalytic effect Effects 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- -1 methyl isobutyl Chemical group 0.000 claims description 7
- 229910052703 rhodium Inorganic materials 0.000 claims description 7
- 239000010948 rhodium Substances 0.000 claims description 7
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 7
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N iso-butyl alcohol Natural products CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 6
- 229940035429 isobutyl alcohol Drugs 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
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- 239000003112 inhibitor Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
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- 230000003213 activating effect Effects 0.000 claims 1
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- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 58
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- 238000009903 catalytic hydrogenation reaction Methods 0.000 abstract 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 21
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 21
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- 230000018044 dehydration Effects 0.000 description 10
- 238000006297 dehydration reaction Methods 0.000 description 10
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- 230000005494 condensation Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 1
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910018493 Ni—K Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
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- 238000003980 solgel method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
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Abstract
本发明提供了一种用于防老剂6PPD生产过程中废溶剂加氢的催化剂及其应用，催化剂由具有主催化作用的活性组分、具有助催化作用的活性组分及载体组成。废溶剂经脱水、脱轻组分后进入加氢反应装置，经催化加氢后制备MIBC产品。本发明将防老剂6PPD生产中废溶剂（酮醇混合物）加氢制备成MIBC，产品纯度高，杂质种类少，不仅丰富了产品链，还可以有效解决副产物回用对产品质量的影响。
Description
技术领域
本发明属于生产废液综合利用领域，具体涉及一种用于防老剂6PPD生产中废溶剂加氢的催化剂及其应用方法。
背景技术
橡胶及其制品在使用过程中会逐渐老化，为了延长其使用寿命，延缓老化过程，通常在橡胶制品中加入防老剂。随着轮胎和橡胶工业发展的需要和环保要求日趋严格，橡胶防老剂品种逐渐趋向于具有抗臭氧化功能对苯二胺类产品和抗氧化性能优异的替代萘胺类产品的喹啉类防老剂。
目前对苯二胺类防老剂中占比最大的是防老剂6PPD，具有高效低毒、抗老化综合性能均衡的特点。国内防老剂6PPD主要采用铜系催化剂连续缩合加氢制备而成，生产过程中甲基异丁基酮（MIBK）发生副反应生成甲基异丁基醇（MIBC），经回收后作为副产出售或脱氢作为原料循环使用。
中国专利CN 102249877A公开了一种利用6PPD生产废残液生产MIBK的方法，对废残液的处理分为三个单元：废残液的减压蒸馏单元、催化脱氢单元和产物分离单元。减压蒸馏单元包括原料的高温蒸发、催化脱氢和产物冷凝冷却三步；催化脱氢是在铜锌系催化剂上进行脱氢反应；产物分离单元包括脱轻组分和MIBK精制两步。该方法从废残液中MIBK，可循环套用于防老剂6PPD的合成。但是，在脱氢过程中，由于脱氢催化剂转化率和选择性不高，循环使用过程中往往会导致杂质富集，影响产品质量。
中国专利CN 109701536A 公开了一种丙酮合成甲基异丁基醇与异丙醇的催化剂及其制备方法和应用。所述催化剂以整体重量分数计，包括0.5~8份来自铜或铜的氧化物的至少一种、0.5~10份来自钴或钴的氧化物的至少一种、82~99份载体。载体选自经高温焙烧钛改性的氧化硅、氧化铝及氧化锆中的至少一种。该催化剂不仅可以生产甲基异丁基醇，还可以联产异丙醇。从实施例结果看，虽然丙酮转化率提高，但产品成分复杂，包含异丙醇、MIBK、MIBC以及二异丁基酮等，产物分离较为复杂。
李明等提出利用橡胶抗氧剂4020生产过程副产的甲基异丁基醇脱氢反应制备甲基异丁基酮的新工艺，首先采用共沉淀法制备了Cu-ZnO-Al2O3脱氢催化剂，并在固定床反应器上进行了MIBC气相催化脱氢反应评价，得到了最佳工艺条件为：温度240~250℃,甲基异丁基甲醇质量空速1.0~1.5h-1，催化剂还原温度低于240℃。
姜慧君等利用化学浸渍法制备了系列Ni-K/NaX复合型催化剂，用于常压下催化丙酮一步法合成甲基异丁基酮，考察了催化剂及反应条件对反应性能的影响，经筛选得到了催化剂体系的最佳组成及催化反应的最佳条件。在该条件下，丙酮的转化率达43.5%，甲基异丁基酮的选择性达83%。
当前防老剂6PPD生产过程中的副产物处理主要有两种途径，一是直接作为副产销售，但由于醇含量较低，应用范围较小；二是建设配套脱氢装置，经催化脱氢后作为原料MIBK回用，但由于脱氢催化剂转化率偏低，并且在脱氢过程中会生成较多其他杂质，作为原料回用时会影响产品质量。
发明内容
为克服现有技术的缺点，本发明提供了一种用于防老剂6PPD生产中废溶剂加氢的催化剂及其应用方法，重点解决以上技术难题。
本发明将防老剂6PPD生产中废溶剂（酮醇混合物）加氢制备成MIBC，产品纯度高，杂质种类少。
本发明提供了一种防老剂6PPD生产过程中废溶剂进行加氢反应的催化剂，由具有主催化作用的活性组分、具有助催化作用的活性组分及载体组成，各组分含量按催化剂质量百分数计：主催化活性组分含量0.1~60%，助催化活性组分含量0.1~30%，载体组分含量10~99.8%。
进一步地，所述加氢催化剂载体包括经高温焙烧的氧化铝、氧化硅、硅藻土、活性炭中的一种或几种。
所述主催化活性组分是指具有主催化作用的Ⅷ族金属及其化合物，包括但不仅限于镍、钯、铂、钴、铑及其化合物中的一种或几种组合。
进一步地，所述催化剂中某一主催化剂组分按催化剂总重量计，组分含量为0.1~60%，优选0.2~40%；
进一步地，所述助催化活性组分是指具有助催化作用的碱金属、碱土金属、主族金属、过渡金属、稀土元素及其化合物，包括但不仅限于钾、镁、锌、铝、铬、锆、钒、钼及其化合物中的一种或几种组合。
进一步地，所述催化剂中某一助催化剂组分按质量百分数计，其组分含量为0.1~30%，优选0.5~20%。
进一步地，所述催化剂中载体组分按质量百分数计，其组分含量为10~99.8%，优选30~99.6%。
本发明还提供了一种如上所述的加氢催化剂在防老剂6PPD废溶剂加氢过程中的应用，包括：将防老剂6PPD生产过程中的废溶剂经脱水、减压蒸馏，塔顶气相冷凝后进入装填有加氢催化剂的固定床反应器，连续加氢生成MIBC。
进一步地，所选加氢反应温度为80~300℃，优选100~235℃，反应压力为0.5~5.0MPa，优选1.0~3.5MPa，液体进料空速为0.05~0.5h-1，优选0.1~0.3h-1。
本发明所述的催化剂通常可以通过浸渍法、沉淀法、离子交换法、溶胶凝胶法、微波法、微乳法等制备。
本发明的有益效果主要体现在：将防老剂6PPD生产过程中的废溶剂加工成相应的醇出售，不仅丰富了产品链，还可以有效解决副产物回用对产品质量的影响。
具体实施方式
下面结合具体实施例对本发明进行详细说明。需要说明的是，这些实施例并非用于限制本发明的保护范围，本发明的保护范围以所附的权利要求书为准。
实施例1
以氧化铝为载体，制备镍/钴/铝催化剂，以催化剂总重计算，催化剂中镍含量为11.0%，钴含量5.4%，铝含量10.0%。将镍/钴/铝催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度145℃，系统压力1.5MPa，液体空速0.10h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量95.2%，MIBK含量4.3%。
实施例2
以氧化铝为载体，制备镍/锰/铝催化剂，以催化剂总重计算，催化剂中镍含量为10.0%，锰含量2.5%，铝含量13.7%。将镍/锰/铝催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度185℃，系统压力2.5MPa，液体空速0.15h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量98.2%，MIBK含量1.4%。
实施例3
以氧化硅为载体，制备镍/锌催化剂，以催化剂总重计算，催化剂中镍含量为40.0%，锌含量28.0%。将镍/锌催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度215℃，系统压力3.5MPa，液体空速0.12h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量92.6%，MIBK含量6.9%。
实施例4
以氧化硅为载体，制备镍/钒催化剂，以催化剂总重计算，催化剂中镍含量为50.0%，钒含量15.0%。将镍/钒催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度250℃，系统压力3.0MPa，液体空速0.20h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量93.9%，MIBK含量5.2%。
实施例5
以硅藻土为载体，制备钴/铑催化剂，以催化剂总重计算，催化剂中钴含量为12.0%，铑含量1.5%。将钴/铑催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度155℃，系统压力2.0MPa，液体空速0.15h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量94.9%，MIBK含量4.3%。
实施例6
以硅藻土为载体，制备铬/铑催化剂，以催化剂总重计算，催化剂中铬含量为10.0%，铑含量2.5%。将铬/铑催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度95℃，系统压力4.5MPa，液体空速0.18h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量92.7%，MIBK含量6.5%。
实施例7
以活性炭为载体，制备钯/碳催化剂，以催化剂总重计算，催化剂中钯含量为3.0%。将钯/炭催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度155℃，系统压力1.0MPa，液体空速0.25h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量98.9%，MIBK含量0.9%。
实施例8
以活性炭为载体，制备铂/炭催化剂，以催化剂总重计算，催化剂中铂含量为0.3%。将铂/炭催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度125℃，系统压力2.0MPa，液体空速0.35h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量99.1%，MIBK含量0.6%。
实施例9
以氧化铝为载体，制备镍/钾/铝催化剂，以催化剂总重计算，催化剂中镍含量为25.0%，钾含量12.5%，铝含量20.0%。将镍/钾/铝催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度280℃，系统压力2.5MPa，液体空速0.08h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量95.4%，MIBK含量4.0%。
实施例10
以氧化硅为载体，制备镍/钒/钼/铝催化剂，以催化剂总重计算，催化剂中镍含量为20.0%，钒含量5.0%，钼含量8.0%，铝含量52.0%。将镍/钒/钼/铝催化剂装填在固定床反应器中，防老剂6PPD生产过程中废溶剂经脱水塔、脱轻组分塔后，塔顶馏分进入加氢反应器，反应温度100℃，系统压力0.8MPa，液体空速0.16h-1，加氢产物冷凝后进入产品罐。分析产品罐产品组成，其中MIBC含量91.7%，MIBK含量7.7%。
Claims (10)
1.一种防老剂6PPD生产中废溶剂加氢的催化剂，其特征在于，催化剂由具有主催化作用的活性组分、具有助催化作用的活性组分及载体组成，各组分含量按催化剂质量百分数计：主催化活性组分含量0.1~60%，助催化活性组分含量0.1~30%，载体组分含量10~99.8%。
2.根据权利要求1所述的催化剂，其特征在于所述的具有主催化作用的活性组分包括Ⅷ族金属及其化合物。
3.根据权利要求2所述的催化剂，其特征在于所述的具有主催化作用的活性组分为镍、钯、铂、钴、铑及其化合物中的一种或几种组合。
4.根据权利要求1所述的催化剂，其特征在于具有主催化作用的活性组分含量按催化剂质量百分数计，其组分含量为0.2~40%。
5.根据权利要求1所述的催化剂，其特征在于所述的具有助催化作用的活性组分包括碱金属、碱土金属、主族金属、过渡金属元素及其化合物。
6.根据权利要求5所述的催化剂，其特征在于具有助催化作用的活性组分包括钾、镁、锌、铝、铬、锆、钒、钼及其化合物中的一种或几种组合。
7.根据权利要求1所述的催化剂，其特征在于所述的具有助催化作用的活性组分含量按催化剂质量百分数计，其组分含量为0.5~20%。
8.根据权利要求1所述的催化剂，其特征在于催化剂载体包括经高温焙烧的氧化铝、氧化硅、硅藻土、活性炭中的一种或几种，组分含量为30~99.6%。
9.根据权利要求1所述催化剂的应用，其特征在于将防老剂6PPD生产过程中的废溶剂经脱水、减压蒸馏，塔顶气相冷凝后进入装填有加氢催化剂的固定床反应器，连续加氢生成甲基异丁基醇。
10.根据权利要求9所述催化剂的应用，其特征在于所选加氢反应温度为80~300℃，优选100~235℃，反应压力为0.5~5.0MPa，优选1.0~3.5MPa，液体进料空速为0.05~0.5h-1，优选0.1~0.3h-1。
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