CN105457649A - A NiMo catalyst for crude-benzene hydrogenation to prepare refined benzene, a preparing method of the catalyst and applications of the catalyst - Google Patents

A NiMo catalyst for crude-benzene hydrogenation to prepare refined benzene, a preparing method of the catalyst and applications of the catalyst Download PDF

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Publication number
CN105457649A
CN105457649A CN201510794874.3A CN201510794874A CN105457649A CN 105457649 A CN105457649 A CN 105457649A CN 201510794874 A CN201510794874 A CN 201510794874A CN 105457649 A CN105457649 A CN 105457649A
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catalyst
benzene
crude
hydrogenation
nickel
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CN201510794874.3A
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Inventor
张华西
赵国强
王莉
毛震波
陈晓华
应理
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Southwest Research and Desigin Institute of Chemical Industry
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Southwest Research and Desigin Institute of Chemical Industry
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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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8871—Rare earth metals or actinides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
    • C07C7/163—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound by hydrogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
    • C07C2523/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
    • C07C2523/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • C07C2523/85—Chromium, molybdenum or tungsten
    • C07C2523/88—Molybdenum
    • C07C2523/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Catalysts (AREA)

Abstract

The invention belongs to the technical field of crude-benzene hydrogenation to prepare refined benzene, and particularly discloses a NiMo catalyst for crude-benzene hydrogenation to prepare refined benzene, a preparing method of the catalyst and applications of the catalyst. The catalyst is prepared by adopting gamma-Al2O3-TiO2 as a carrier and loading a certain amount of active components. When the catalyst is used for crude-benzene hydrogenation to prepare refined benzene, the catalyst is high in activity, the hydrogenation efficiency of styrene and other active olefins is higher than 98%, the catalyst is long in service lifetime, the activity of the catalyst does not decrease after the catalyst is continuously used for 1000 h, and through combination with two-stage hydrogenation catalysts, the total sulfur in crude benzene is removed to a level that the concentration of the total sulfur is lower than 0.5 mg/L and the total nitrogen is removed to a level that the concentration of the total nitrogen is lower than 1.0 mg/L. The catalyst can be used as a catalyst for hydrogenation, desulfurization and denitrification of coking benzene and petrobenzene to prepare refined benzene, can be widely used as a catalyst for other processes needing hydrogenation, desulfurization and denitrification, is good in market prospect and suitable for industrial popularization.

Description

A kind of NiMo Catalysts and its preparation method of crude benzole hydrogenation producing refined benzene and application
Technical field
The invention belongs to crude benzole hydrogenation producing refined benzene technical field, especially relate to a kind of NiMo Catalysts and its preparation method and application of crude benzole hydrogenation producing refined benzene.
Background technology
Benzene is obtained by the dry distillation of coal, oil catalytic pyrolysis, catalytic reforming, therefore containing some unsaturated hydrocarbons and sulfur-bearing nitrogen-containing compound, as linear paraffin mercaptan, aromatic radical mercaptan, thioether, thiophene, dibenzothiophenes, benzo-thiophene, pyridine etc.When benzene is as organic synthesis raw material, these impurity needs to remove.Crude benzole hydrogenation is that make nitrogen-containing impurity hydrogenation Formed hydrogen compound and ammonia, unsaturated hydrocarbons compounds is generated saturated alkane derivative by hydrogenation, thus reaches refining object in order to incite somebody to action wherein sulfur-containing impurities hydrogenation Formed hydrogen compound and sulfide.
Chinese invention patent CN103566958A discloses a kind of crude benzole hydrogenation desulphurization and denitrification catalyst and preparation method, but it is phosphorous in this invention 1 section of catalyst, phosphorus exists in the catalyst usually in the form of an oxide, there is stronger acidity, the high-activity olefin such as styrene in easy catalytic polymerization crude benzol, cause catalysqt deactivation, catalyst life is shorter.
Summary of the invention
The NiMo catalyst that the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of crude benzole hydrogenation producing refined benzene, this catalyst activity is high, and the life-span is long.
Another object of the present invention is to provide a kind of preparation method of above-mentioned NiMo catalyst, and this preparation method is simpler than prior art.
The present invention also provides the application of above-mentioned NiMo catalyst.
The object of the invention is realized by following technical proposals:
A NiMo catalyst for crude benzole hydrogenation producing refined benzene, described catalyst is with γ-Al 2o 3-TiO 2for carrier, a certain amount of active component of load and making, to account for the mass percent of catalyst, described active component is 1%-6% nickel, 10%-25% molybdenum and 0.01%-1% rare earth metal.
Preferably, described nickel is selected from nickel acetate, nickel nitrate, basic nickel carbonate or nickel oxalate; Described molybdenum is selected from ammonium molybdate or molybdenum oxide; Described rare earth metal is one or more in cerium, yttrium, dysprosium, erbium, holmium.
Prepare a method for the NiMo catalyst of above-mentioned crude benzole hydrogenation producing refined benzene, comprise the steps:
(1) nickel salt, molybdenum salt or molybdenum oxide, the rare earth metal salt accounting for molybdenum quality 0.1%-5% or oxide are dissolved in deionized water, after heating for dissolving, obtained nickel-molybdenum-rare earth mixed liquor;
(2) by boehmite, TiO 2after mixing with sesbania powder, add nickel-molybdenum-mixed solution of rare earth that step (1) is obtained, after kneading and compacting, dry, after roasting and get final product.
As preferably, in described step (1), heating for dissolving temperature is 80 DEG C-130 DEG C, and the time is 2h-5h.
Preferred further, in described step (2), the amount of boehmite is the 75%-90% of mixture quality; TiO 2amount be the 3%-15% of mixture quality, the amount of sesbania powder is the 0.1%-10% of mixture quality.
Preferred further, in described step (2), bake out temperature is 100 DEG C-160 DEG C, roasting 5h-8h at 350 DEG C-550 DEG C.
The application of the NiMo catalyst of upper described crude benzole hydrogenation producing refined benzene, this NiMo catalyst application, in crude benzole hydrogenation producing refined benzene, can remove the styrene of in crude benzol more than 98%.
In above-mentioned method for preparing catalyst, nickel salt is selected from nickel acetate, nickel nitrate, basic nickel carbonate or nickel oxalate; Molybdenum salt or oxide select ammonium molybdate or molybdenum oxide.Rare earth metal refers to lanthanide series La (lanthanum), the Ce (cerium), Pr (praseodymium), Dy (dysprosium), Ho (holmium), Er (erbium), Yb (ytterbium) etc. and the Sc (scandium) similar to the chemical property of lanthanide series and Y (yttrium) etc. 17 kinds in the periodic table of chemical element; Wherein be preferably Ce (cerium), Y (yttrium), Dy (dysprosium), Er (erbium), Ho (holmium) etc.
Catalyst of the present invention is mainly used as the one-stage hydrogenation catalyst in crude benzole hydrogenation desulfurization removing nitric producing refined benzene process, and the alkene that the styrene namely in major catalytic hydrogenation crude benzol and cyclopentadiene etc. are easily polymerized needs to use CS before use 2or H 2s sulfuration.
Compared with prior art, the invention has the beneficial effects as follows:
(1) P easily causing olefinic polymerization in traditional NiMoP catalyst, is eliminated, add rare earth element, effectively prevent the polymerization of the high-activity olefin such as styrene in crude benzol, extend the long service life of catalyst, the styrene of in crude benzol more than 98% can be removed, carried out the life experiment of 1000 hours, catalyst performance keeps stable.
(2), this catalyst except the 1 section of catalyst that can be used as coking benzene and petrobenzene hydrogenation desulfurization and denitrogenation producing refined benzene, and secondary hydrogenation catalyst adapted, can take off the total sulfur in crude benzol to taking off to lower than 1.0mg/L lower than 0.5mg/L, total nitrogen.Except the catalyst that can be used as coking benzene and petrobenzene hydrogenation desulfurization and denitrogenation producing refined benzene, also can be widely used as other catalyst needing hydrogenation desulfurization and denitrogenation technique, there are good market prospects, be suitable for industrialization promotion.
Detailed description of the invention
Arbitrary feature disclosed in this description, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Embodiment 1
The preparation method of NiMo catalyst, comprises the following steps: will
(1), by 17gMoO 3, 5.8g basic nickel carbonate and 0.2gDy (NO 3) 25H 2o, joins in 90mL deionized water, under constantly stirring, and 85 DEG C of heating 4h, for subsequent use.
(2), by 78g boehmite, 4gTiO 2with 5g sesbania powder, after mixing, add above-mentioned Ni-Mo mixed solution, after kneading and compacting, dry at 110 DEG C-150 DEG C, roasting 6h at 450 DEG C, obtained NiMo catalyst.
Embodiment 2
Adopt the NiMo catalyst prepared in embodiment 1 as one-stage hydrogenation catalyst, mix and adopt the preparation method recorded in CN103566958A to prepare CoMoP catalyst as secondary hydrogenation catalyst, for the application test in hydrogenation desulfurization and denitrogenation technique, its process flow diagram is shown in CN103566958A, concrete grammar and experimental result as follows:
The 50gNiMo catalyst prepared in embodiment 1 and 100gCoMoP catalyst are respectively charged in Ф 25 × 2mm reactor.With 2% (V/V) DMDS-benzole soln sulfuration before using, conditions of vulcanization is: temperature 200 DEG C, hydrogen pressure 2.5MPa, liquid air speed 1h -1, H 2: Oil (V/V) 600:1, cure time 15h, two kinds of catalyst sulfurations respectively.200gZnO desulfurizing agent is loaded in tourie.
Be communicated with flow process, coking benzene is through pretreatment rectifying, get tower top light component to obtain benzene content and be greater than 97%, styrene-content is not less than 1%, sulfur content is not less than 5000mg/L, nitrogen content is not less than the crude benzol of 500mg/L, crude benzol and hydrogen are mixed into vaporizer in a mixer, after temperature is heated to 180 DEG C, enter reactor one and carry out I grade of de-alkene and the reaction of preliminary hydrogenation desulfurization and denitrogenation, gas out enters reactor two afterwards from reactor one and is heated to 270 DEG C and carries out the reaction of II grade of hydrogenation desulfurization and denitrogenation, reacted mixture enters tourie again and carries out III grade of inorganic desulphurization reaction.Reacted mixture is cooled to after normal temperature through drainer and enters gas-liquid separator separates, from
And obtaining product refining benzene, long run test is after 1000 hours, and sampling detects, and the product refining benzene proterties obtained is in table 1.
Table 1 product refining benzene proterties
Purity % 99.9
Outward appearance Colourless transparent liquid
Total sulfur/mgL -1 0.3
Total nitrogen/mgL -1 0.8
Basic nitrogen/mgL -1 Do not detect
Bromine valency gBr/100g 0.01
Density 20 DEG C/gmL -1 0.8782
Comparative example
Prepare NiMoP catalyst and CoMoP catalyst respectively by patent CN103566958A, for the application test in hydrogenation desulfurization and denitrogenation technique, test method is the same, and long run test is after 500 hours, and sampling detects, and in the products benzene obtained, total sulfur content is 1.3mgL -1, total nitrogen is 2.2mgL -1, be substandard product.From upper embodiment, through embodiments of the invention 1 without phosphorus one-stage hydrogenation NiMo catalyst and homemade CoMoP secondary hydrogenation catalyst HDS denitrogenation successive reaction after 1000 hours, in product, sulfur content is less than 0.3mg/L, nitrogen content is 0.8mg/L, products benzene content is greater than 99.9%, for qualified products, and phosphorus-containing catalyst after continuously using 500 hours in products obtained therefrom sulphur, phosphorus all there is exceeding standard phenomenon, show good catalyst activity of the present invention and the life-span longer, there is good application prospect.

Claims (7)

1. a NiMo catalyst for crude benzole hydrogenation producing refined benzene, is characterized in that, described catalyst is with γ-Al 2o 3-TiO 2for carrier, a certain amount of active component of load and making; To account for the mass percent of catalyst, described active component is 1%-6% nickel, 10%-25% molybdenum and 0.01%-1% rare earth metal.
2. the NiMo catalyst of crude benzole hydrogenation producing refined benzene according to claim 1, is characterized in that, described nickel is selected from nickel acetate, nickel nitrate, basic nickel carbonate or nickel oxalate; Described molybdenum is selected from ammonium molybdate or molybdenum oxide; Described rare earth metal is one or more in cerium, yttrium, dysprosium, erbium, holmium.
3. prepare a method for the NiMo catalyst of crude benzole hydrogenation producing refined benzene as claimed in claim 1 or 2, it is characterized in that, comprise the steps:
(1) by nickel salt, molybdenum salt or its oxide and account for the rare earth metal salt of molybdenum salt quality 0.1%-5% or oxide dissolves in deionized water, under constantly stirring, after heating for dissolving, obtained nickel-molybdenum-rare earth mixed liquor;
(2) by boehmite, TiO 2after mixing with sesbania powder, add nickel-molybdenum-mixed solution of rare earth that step (1) is obtained, after kneading and compacting, dry, after roasting and get final product.
4. the method preparing the NiMo catalyst of crude benzole hydrogenation producing refined benzene according to claim 3, is characterized in that, in described step (1), heating for dissolving temperature is 80 DEG C-130 DEG C, and the time is 2h-5h.
5. the method preparing the NiMo catalyst of crude benzole hydrogenation producing refined benzene according to claim 3, is characterized in that, in described step (2), the amount of boehmite is the 75%-90% of mixture quality; TiO 2amount be the 3%-15% of mixture quality, the amount of sesbania powder is the 0.1%-10% of mixture quality.
6. the method preparing the NiMo catalyst of crude benzole hydrogenation producing refined benzene according to claim 3, is characterized in that, in described step (2), bake out temperature is 100 DEG C-160 DEG C, roasting 5h-8h at 350 DEG C-550 DEG C.
7. the application of the NiMo catalyst of crude benzole hydrogenation producing refined benzene as claimed in claim 1 or 2, it is characterized in that, this NiMo catalyst application, in crude benzole hydrogenation producing refined benzene, removes the styrene of in crude benzol more than 98%.
CN201510794874.3A 2015-11-17 2015-11-17 A NiMo catalyst for crude-benzene hydrogenation to prepare refined benzene, a preparing method of the catalyst and applications of the catalyst Pending CN105457649A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5968347A (en) * 1994-11-25 1999-10-19 Kvaerner Process Technology Limited Multi-step hydrodesulfurization process
CN1948244A (en) * 2006-11-13 2007-04-18 西南化工研究设计院 Technology of making refined benzene by hydrogenation, desulfur denitrogen of coking benzene
CN101722039A (en) * 2008-10-21 2010-06-09 中国石油化工股份有限公司 Hydrogenation catalyst and preparation method thereof
CN103566958A (en) * 2013-11-12 2014-02-12 西南化工研究设计院有限公司 Catalyst for preparing refined benzene from crude benzene hydrogenation and preparation method thereof
CN104226325A (en) * 2014-08-20 2014-12-24 萍乡庞泰实业有限公司 Crude benzene hydrorefining catalyst and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5968347A (en) * 1994-11-25 1999-10-19 Kvaerner Process Technology Limited Multi-step hydrodesulfurization process
CN1948244A (en) * 2006-11-13 2007-04-18 西南化工研究设计院 Technology of making refined benzene by hydrogenation, desulfur denitrogen of coking benzene
CN101722039A (en) * 2008-10-21 2010-06-09 中国石油化工股份有限公司 Hydrogenation catalyst and preparation method thereof
CN103566958A (en) * 2013-11-12 2014-02-12 西南化工研究设计院有限公司 Catalyst for preparing refined benzene from crude benzene hydrogenation and preparation method thereof
CN104226325A (en) * 2014-08-20 2014-12-24 萍乡庞泰实业有限公司 Crude benzene hydrorefining catalyst and preparation method thereof

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YASUHITO OGAWA ET AL.: "Effect of lanthanum promotion on the structural and catalytic properties of nickel-molybdenum/alumina catalysts", 《APPLIED CATALYSIS A: GENERAL》 *
宿亮虎: "NiMo和CoMoP/TiO2-Al2O3催化剂上焦化粗苯的两段加氢精制", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 *
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