JPH06145672A - Production of fraction containing highly aromatic hydrocarbon - Google Patents

Production of fraction containing highly aromatic hydrocarbon

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Publication number
JPH06145672A
JPH06145672A JP32626892A JP32626892A JPH06145672A JP H06145672 A JPH06145672 A JP H06145672A JP 32626892 A JP32626892 A JP 32626892A JP 32626892 A JP32626892 A JP 32626892A JP H06145672 A JPH06145672 A JP H06145672A
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catalyst
containing
reforming
zeolite
fraction
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Japanese (ja)
Inventor
Satoshi Fukase
Koichi Kato
Mitsunobu Nakada
Yasukazu Sato
光信 中田
保和 佐藤
恒一 加藤
聡 深瀬
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Japan Energy Corp
株式会社ジャパンエナジー
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Priority to JP32626892A priority Critical patent/JPH06145672A/en
Publication of JPH06145672A publication Critical patent/JPH06145672A/en
Application status is Pending legal-status Critical

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Abstract

PURPOSE: To efficiently obtain the subject fraction useful as a raw material for producing aromatic hydrocarbons such as high-octane number gasoline or BTX by bringing a naphtha fraction into contact with a reforming catalyst and a zeolite-containing aromatizing catalyst under reforming conditions.
CONSTITUTION: Nail and tetrapropylammonium bromide are dissolved in distilled water and a solution prepared by dissolving zinc sulfate, aluminum nitrate, a tetrapropylammonium bromide and concentrated sulfuric acid in distilled water is then added to the prepared solution under stirring conditions. The mixture solution is heated to 160°C and then allowed to cool to take out solid substances. Ammonium nitrate is subsequently added to the residual solution and the mixture solution is treated at 80°C to remove the supernatant. The resultant solid substance is washed with water and dried to afford crystalline aluminozincosilicate. Silica-magnesia-based synthetic clay is then added thereto and the prepared mixture is granulated and burned to provide a zeolite-containing aromatizing catalyst, which is combined with a reforming catalyst and brought into contact with a naphtha fraction under reforming conditions of 500°C temperature, 10kg/cm2G pressure and 3.2 molar ratio of hydrogen/oil to afford the objective fraction useful as a raw material for producing high-octane number gasoline and aromatic hydrocarbons, etc.
COPYRIGHT: (C)1994,JPO&Japio

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明はナフサ留分を接触改質することにより高芳香族炭化水素含有留分を製造する方法に関する。 The present invention relates to a process for producing a high aromatic hydrocarbon containing fraction by contacting reforming a naphtha fraction.

【0002】 [0002]

【従来の技術】石油精製においては、ナフサ留分を接触改質して高芳香族炭化水素含有留分を製造し、高オクタン価カソリンやBTXの製造原料とすることが広く行われている。 BACKGROUND OF THE INVENTION petroleum refining, the naphtha fraction contacting reforming to produce high aromatic hydrocarbon containing fraction, and it is the widespread to a raw material for producing high-octane Kasorin and BTX. このナフサ留分の接触改質は、一般に、沸点が60〜210℃の範囲にある重質ナフサ留分を、アルミナを担体として白金、または白金に加えてレニウム、 Catalytic reforming of naphtha fractions are typically heavy naphtha fraction having a boiling point in the range of 60 to 210 ° C., the addition of alumina platinum as a carrier or platinum, rhenium,
ゲルマニウム、すず、イリジウム、ルテニウム等を担持した触媒を用い、400〜550℃の温度、1〜50kg Germanium, tin, using iridium, supported catalyst ruthenium, etc., a temperature of 400 to 550 ° C., 1 to 50 kg
/cm 2の圧力、液空間速度(LHSV)0.1〜3h -1 、水素/油モル比0.5〜20の条件下に、接触させることにより行われている。 / Pressure of cm 2, a liquid hourly space velocity (LHSV) 0.1~3h -1, under the conditions of a hydrogen / oil molar ratio 0.5 to 20, has been performed by contacting. この接触改質において、生成油中の芳香族炭化水素の含有量を増大させるには、同一の原料油種、触媒の使用では、反応条件を過酷にせざるを得ない。 In this catalytic reforming, to increase the content of the aromatic hydrocarbons in the produced oil, the same feedstock oil species, the use of catalysts, harsh in forced reaction conditions. しかしながら、反応条件を過酷にすることは、触媒寿命を縮めることになり、この方法には自ずと限界がある。 However, to the harsh reaction conditions, it will be shortened catalyst life, this method has a limit.

【0003】一方、本出願人は、ゼオライト含有芳香族化触媒の1種である結晶性アルミノジンコシリケート触媒に、水素の不存在下で炭素数2〜7脂肪族炭化水素又は脂環式炭化水素を接触させて、芳香族炭化水素に転化する方法を提案している(特開平3-99025号、特開平3-17 [0003] On the other hand, the present applicant, the crystalline aluminozincosilicate catalyst is one zeolite containing aromatization catalyst, the number 2-7 aliphatic carbon in the absence of hydrogen hydrocarbon or an alicyclic hydrocarbon are contacted, we have proposed a method for converting an aromatic hydrocarbon (JP-a-3-99025, JP-3-17
8934号、特開平4-95034号等各公報参照)。 No. 8934, see the Publication JP-A-4-95034). この方法は、 This method,
どちらかと言えば、炭素数6未満の脂肪族炭化水素から芳香族炭化水素を合成することに特徴を有するものであり、例えば、この方法では、n-ペンタンの約50%を芳香族炭化水素に転化することができる。 Rather, those having a characteristic to synthesize aromatic hydrocarbons from aliphatic hydrocarbons having less than 6 carbon atoms, for example, in this method, about 50% of n- pentane aromatic hydrocarbons it can be converted.

【0004】 [0004]

【発明が解決しようとする課題】本発明者は、ゼオライト含有芳香族化触媒を用いた炭化水素の環化について、 SUMMARY OF THE INVENTION It is an object of the present invention have, for the cyclization of hydrocarbons using a zeolite-containing aromatization catalyst,
鋭意研究を進めた結果、改質触媒とゼオライト含有芳香族化触媒を組み合わせて用い、これにナフサ留分を改質条件下で接触させると、驚くべきことに、両触媒の機能が補完しあって芳香族炭化水素の収率が向上できることが分かった。 Intensive a result of our research, using a combination of reforming catalyst and the zeolite-containing aromatization catalyst, when this is brought into contact with naphtha fraction in the reforming conditions, surprisingly, there was completion of both catalyst the yield of aromatic hydrocarbons could be improved Te.

【0005】本発明はかかる知見に基づきなされたもので、本発明の目的はナフサ留分から芳香属炭化水素、特にはベンゼン、トルエンの含有量の高い留分を製造する方法を提供することにある。 [0005] The present invention has been made based on this finding, the purpose aromatic hydrocarbons from naphtha fraction, in particular to provide a process for producing benzene, a higher fraction of the content of toluene present invention .

【0006】 [0006]

【課題を解決するための手段】本発明は、ナフサ留分を改質触媒及びゼオライト含有芳香族化触媒と改質条件下に接触させることからなり、特には、ナフサ留分を改質触媒に引き続いてゼオライト含有芳香族化触媒と改質条件下で接触させるか、改質触媒とゼオライト含有芳香族化触媒とが重量比で95:5〜60:40で充填された触媒床と改質条件下で接触させることからなる高芳香族炭化水素含有留分の製造方法である。 Means for Solving the Problems The present invention consists in contacting the naphtha fraction to the reforming catalyst and the zeolite-containing aromatization catalyst and the reforming conditions, in particular, the naphtha fraction to the reforming catalyst It may be contacted with the zeolite-containing aromatization catalyst and the reforming conditions subsequently reforming catalyst and the zeolite-containing aromatization catalyst and is at a weight ratio of 95: 5-60: packed catalyst bed and the reforming conditions 40 it is a highly aromatic hydrocarbon-containing fraction method of manufacturing comprising contacting under.

【0007】本発明にいうナフサ留分とは、常圧蒸留分離操作により得られる塔頂凝縮留分〜210℃の石油留分であり、特には、沸点が60〜210℃の範囲にある重質ナフサ留分が好適である。 [0007] naphtha fraction called the present invention, a petroleum distillate overhead condensate fraction to 210 ° C. obtained by atmospheric distillation separation operation, in particular a boiling point in the range of from 60 to 210 ° C. Heavy quality naphtha fraction are preferred. このナフサ留分は、原油を常圧蒸留して得られた直留のナフサ留分の他、石油の各留分や残渣等の熱分解、接触分解、水素化分解等の精製処理等により得られた前記沸点範囲の留分等も用いることができる。 Obtained this naphtha fraction, other straight run naphtha fraction obtained by atmospheric distillation of crude oil, the fractions and thermal decomposition of the residues and the like oil, catalytic cracking, the purification treatment such as hydrocracking fraction or the like of the boiling range is can also be used. このナフサ留分は、好ましくは、硫黄分及び窒素分を、50ppm、特には、1ppm以下としたものが良く、これは、一般に採用されている水添脱硫処理方法で、通常の脱硫条件、例えば、アルミナあるいはシリカ-アルミナ等の担体に、コバルト、ニッケル、モリブデン、タングステン等の1種以上を担持した触媒を用い、250〜430℃の温度、10〜200kg/cm 2の圧力、液空間速度(LHSV)0.1〜15h -1 、水素循環量50〜1400Nm 3 /klの条件下で脱硫した脱硫ナフサを用いることが好ましい。 The naphtha fraction is preferably sulfur and nitrogen content, 50 ppm, in particular, good ones was 1ppm or less, which is a hydrodesulfurization treatment method generally employed, normal desulfurization conditions, e.g. , alumina or silica - a carrier such as alumina, cobalt, nickel, molybdenum, using a supported catalyst with one or more such as tungsten, the temperature of two hundred and fifty to four hundred thirty ° C., a pressure of 10 to 200 / cm 2, a liquid hourly space velocity ( LHSV) 0.1~15h -1, it is preferable to use a desulfurized desulfurized naphtha under hydrogen circulation rate 50~1400Nm 3 / kl.

【0008】本発明で用いる改質触媒とは、アルミナを担体とし、これに白金、または白金に加えてレニウム、 [0008] The reforming catalyst used in the present invention, the alumina as a carrier, in addition to platinum or platinum, rhenium,
ゲルマニウム、すず、イリジウム、ルテニウム等を担持したことからなる触媒で、通常のナフサ留分から高オクタン価ガソリンを製造する方法で用いられている触媒であれば、特に支障なく採用することができる。 Germanium, tin, iridium, with a catalyst consisting in carrying ruthenium, if the catalyst which is used in a method for producing high octane gasoline from a conventional naphtha fraction, can be employed, especially without any problem.

【0009】一方、本発明のゼオライト含有芳香族化触媒とは、MFI型、L型、或いはβ型の結晶性アルミノシリケートの骨格構成からなるか、或いはこの骨格成分のアルミナの全部又は一部を、亜鉛等の周期律表IIb On the other hand, the zeolite-containing aromatization catalyst of the present invention, MFI type, L-type, or whether made from the backbone structure of the β-type crystalline aluminosilicate, or the whole or part of the alumina of this framework component , the period of zinc, such as table IIb
族、ガリウム等のIIIa族、白金等のVIII族元素等で置換したもので、炭素数3〜5の低級炭化水素から芳香族炭化水素を生成する芳香族化活性を有するものである。 Group, IIIa group such as gallium, which was replaced by a Group VIII element such as platinum or the like, and have the aromatization activity to produce aromatic hydrocarbons from a lower hydrocarbon having 3 to 5 carbon atoms.
この種のゼオライトとしては、結晶性ガロシリケート、 As this type of zeolite, crystalline gallosilicate,
結晶性アルミノガロシリケート、結晶性ジンコガロシリケート、結晶性アルミノジンコシリケートが、また通常のイオン交換法により、周期律表IIb族、IIIa族或いはVIII族元素をイオン交換サイトに導入したり、さらに、これらの元素を前記ゼオライト表面に担持したものが例示できる。 Crystalline aluminogallosilicate, crystalline magna gallosilicate, crystalline aluminozincosilicate is also by conventional ion exchange method, the periodic table group IIb, or by introducing a group IIIa or VIII group element ion exchange sites, further, these elements that supported on the zeolite surface may be exemplified.

【0010】これらのうちでも特に結晶性アルミノシリケートのアルミニウムを部分的に亜鉛カチオンで置換した結晶性アルミノジンコシリケートが好ましく、これは、ケイ素、アルミニウムおよび亜鉛原子が酸素を共有して架橋し結晶性アルミノシリケートと同じ骨格構造を有するものである。 [0010] Crystalline aluminozincosilicate in particular by replacing the aluminum of the crystalline aluminosilicate in a partially zinc cations Among these are preferred, which include silicon, aluminum and zinc atoms is crosslinked by sharing of oxygen crystalline it is one which has the same skeletal structure as the aluminosilicate. この結晶性アルミノジンコシリケートは、Si/Al原子比が14〜35で、Si/Zn原子比が30〜350となるまでアルミニウムを亜鉛へ置換したものが、活性が高くかつ芳香族炭化水素の選択率も高く、しかも触媒寿命が長いため、特に好ましい。 The crystalline aluminozincosilicate is a Si / Al atomic ratio of 14-35, selected those with substitution of aluminum to zinc, the high activity and aromatic hydrocarbons until Si / Zn atomic ratio is 30 to 350 rate is high, and since a long catalyst life, particularly preferred.

【0011】また、この種のゼオライト芳香族化触媒は、ナトリウムやカリウム等のアルカリ金属を水素イオンで置換し、アルカリ金属を0.4重量%以下としたものが好ましい。 Further, zeolite aromatization catalyst of this kind, an alkali metal such as sodium or potassium was replaced with hydrogen ions, the alkali metal preferably those with 0.4 wt% or less. さらに、この触媒は、上記ゼオライトそれ自身で用いることもできるが、このゼオライトを担体とし、これに白金、クロム等の遷移金属を担持したものを用いることもできる。 Furthermore, the catalyst can also be used in the zeolite itself, the zeolite as a carrier, it is also this platinum, the use of those carrying a transition metal such as chromium.

【0012】このゼオライト含有芳香族化触媒は、一般に、ケイ素化合物、アルミニウム化合物、或いは必要に応じ周期律表IIb族、IIIa族或いはVIII族元素、さらにアルカリ金属化合物、水、また所望によりテンプレートとして有機窒素化合物、さらには酸を混合し、100 [0012] Organic The zeolite-containing aromatization catalysts are generally silicon compound, aluminum compound, or a periodic table group IIb necessary, IIIa group or VIII group elements, further alkali metal compound, water, and as desired by the template nitrogen compounds, further mixing the acid, 100
〜220℃の温度に3〜200時間保って合成することができる。 To a temperature of to 220 ° C. can be synthesized keeping 3-200 hours.

【0013】本発明では、前記改質触媒とこのゼオライト含有芳香族化触媒とを併用するものである。 In the present invention, in which a combination of this and zeolite-containing aromatization catalyst and the reforming catalyst. この場合の態様の一つは、重質ナフサを、先ず改質触媒で改質し、続いてゼオライト含有芳香族化触媒と接触させる方法で、また、他の態様として、改質触媒とゼオライト含有芳香族化触媒とを混合した触媒床で、当該混合触媒とナフサ留分とを接触させる方法である。 This one aspect of the case, the heavy naphtha, reforming first reforming in the reforming catalyst, followed by by a method of contacting with the zeolite-containing aromatization catalyst, also, in another embodiment, the reforming catalyst and the zeolite-containing in the catalyst bed a mixture of the aromatization catalyst, a method of contacting the said catalyst mixture with naphtha fraction.

【0014】前者の方法は、一つの反応塔の下部にゼオライト含有芳香族化触媒を充填し、その上部に改質触媒を充填し、上部からナフサ留分を導入、流下させることにより接触させると良い。 [0014] The former method is a zeolite-containing aromatization catalyst was packed in the lower portion of one of the reaction column, packed with reforming catalyst thereon, introducing the naphtha fraction from the top, when contacted by a stream good. もちろん、改質触媒を充填する反応容器とゼオライト含有芳香族化触媒を充填した反応容器を別々に用意し、それを配管でシリーズに連結して用いても良い。 Of course, providing a reaction vessel filled with the reaction vessel and the zeolite-containing aromatization catalyst filling the reforming catalyst separately, it may be used which was connected to a series pipe. この場合、触媒の充填量は、改質触媒とゼオライト含有芳香族化触媒とが重量比で95:5〜 In this case, the filling amount of the catalyst, reforming catalyst and the zeolite-containing aromatization catalyst in a weight ratio of 95: 5
60:40となるようにすることが好ましい。 It is preferable to be 60:40. ゼオライト含有芳香族化触媒の充填量が5重量%以下の場合は、 If loading of the zeolite-containing aromatization catalyst is 5 wt% or less,
芳香族炭化水素の収率の向上があまり期待できず、また40重量%以上の充填量としても、充填量の増加に比し芳香族炭化水素の収率の向上が少なく、好ましくない。 Improvement of yield aromatic hydrocarbons can not be expected so much and also the loading of more than 40 wt%, less improvement of the yield of aromatic hydrocarbons as compared to an increase of the loading, which is not preferable.
また、ゼオライト含有芳香族化触媒の充填量を多くすると、反応塔の容積を変化させなければ改質触媒の充填量を減らし、芳香族炭化水素の収量が減少するため、ゼオライト含有芳香族化触媒の充填量は全触媒の40重量% Further, when increasing the loading of the zeolite-containing aromatization catalyst, if to change the volume of the reaction tower to reduce the filling amount of the reforming catalyst, to reduce the yield of aromatic hydrocarbons, zeolite-containing aromatization catalyst 40% by weight of the filling amount of the total catalyst
以下とすることが好ましい。 It is preferable that the following.

【0015】一方、後者の方法は、例えば、反応容器に触媒連続再生法を付加した移動床からなる、いわゆるC Meanwhile, the latter method, for example, a moving bed by adding a catalytic continuous regeneration process in the reaction vessel, the so-called C
CR(continious catalyst regeneration)方式で行う場合に好適である。 Is suitable when performed in CR (continious catalyst regeneration) method. この場合、改質触媒とゼオライト含有芳香族化触媒とは95:5〜60:40の重量比で混合され、反応及び再生に供される。 In this case, the reforming catalyst and the zeolite-containing aromatization catalyst 95: 5-60: are mixed in a weight ratio of 40, it is subjected to the reaction and regeneration.

【0016】上記触媒との接触は、通常の改質条件下に行われる。 The contact between the catalyst is carried out in the normal reforming conditions. すなわち、400〜550℃の温度、1〜5 That is, the temperature of 400 to 550 ° C., 1 to 5
0kg/cm 2の水素加圧下、液空間速度(LHSV)0.1〜 Under hydrogen pressure of 0 kg / cm 2, a liquid hourly space velocity (LHSV) 0.1 to
3h -1 、水素/油モル比0.5〜20の範囲で適宜選定される。 3h -1, is suitably selected in the range of hydrogen / oil molar ratio 0.5 to 20.

【0017】以上のようにして得られる生成油には、芳香族炭化水素が高い含有量で含まれ、高オクタン価ガソリンの基材として、あるいはこれからベンゼン、トルエン、キシレン等の芳香族炭化水素成分を分離回収し、各種の石油化学製品の原料として利用できる。 [0017] The product oil obtained as described above, aromatic hydrocarbons are contained at a high content, as a substrate for high-octane gasoline, or benzene therefrom, toluene, aromatic hydrocarbon component and xylene separated and recovered can be used as a raw material for various petrochemical products.

【0018】 [0018]

【実施例】 【Example】

(実施例) ゼオライト含有芳香族化触媒の調製ゼオライト含有芳香族化触媒として結晶性アルミノジンコシリケートを次の方法で調製した。 To prepare crystalline aluminozincosilicate (Example) Preparation zeolite-containing aromatization catalyst zeolite containing aromatization catalyst in the following manner.

【0019】蒸留水13.1kgに、塩化ナトリウム3.3 [0019] distilled water 13.1kg, sodium chloride 3.3
1kg及びテトラプロピルアンモニウムブロミド59.3g 1kg and tetrapropylammonium bromide 59.3g
を溶解したC液に、蒸留水7.50kgに硫酸亜鉛301 The C solution obtained by dissolving, distilled water 7.50kg zinc sulfate 301
g、硝酸アルミニウム397g、テトラプロピルアンモニウムブロミド178.5g及び濃硫酸504gを溶かしたB液を撹拌しながら同時にかつ連続的に加えた。 g, aluminum nitrate 397 g, was added simultaneously and continuously with agitation melted liquid B tetrapropylammonium bromide 178.5g and concentrated sulfuric acid 504 g. その際、混合液のPHを10に維持するように水酸化ナトリウムまたは硫酸を添加した。 At that time, the PH of the mixture was added sodium hydroxide or sulfuric acid to maintain a 10. この混合液を160℃まで3時間で昇温し、引き続き160℃で2時間撹拌した。 The mixture was heated for 3 hours to 160 ° C., and subsequently stirred for 2 hours at 160 ° C..
放冷して固形物を取出し、1規定の硝酸アンモニウムを固形物濃度が4%になるまで加え、80℃で2時間撹拌して上澄液を除き、水洗後乾燥した。 Taken out solid was allowed to cool, added to 1 N ammonium nitrate until the solids concentration of 4%, except for the supernatant and stirred for 2 hours at 80 ° C., washed with water, and then dried. このようにして得られた結晶性アルミノジンコシリケートに2.4kgに対し、シリカ-マグネシア系合成粘土240gを造粒剤として加え、転動造粒機で直径4mmの球状に成型し、乾燥した後、540℃で焼成した。 To 2.4kg Such crystalline aluminozincosilicate thus obtained, silica - added magnesia synthetic clay 240g as the granulating agent, and molded into a spherical shape with a diameter of 4mm at tumbling granulator, and dried , it was fired at 540 ℃. 次に、これを、80℃の温度の1規定の硝酸アンモニウムに2時間浸漬し、乾燥後、540℃で焼成した。 Next, this was immersed for 2 hours in 80 ° C. 1 provisions of ammonium nitrate temperature, dried, and calcined at 540 ° C.. この触媒は、Si/Alの原子比が29、Si/Znの原子比が48で、Si/Na The catalyst, an atomic ratio of Si / Al atomic ratio is 29, Si / Zn is 48, Si / Na
の原子比が834であった。 It was an atomic ratio of 834.

【0020】また、この触媒は、500℃の温度、LH [0020] In addition, the catalyst, 500 ℃ of temperature, LH
SV0.8h -1 、常圧の条件で、n-ペンタンを転化率4 SV0.8h -1, at atmospheric pressure conditions, n- pentane conversion 4
9%で芳香族炭化水素に変換できる初期活性を有していた。 It had an initial activity that can be converted into aromatic hydrocarbons by 9%.

【0021】 改質条件下での反応上記で調製した結晶性アルミノジンコシリケート触媒2 The crystalline aluminosilicate was prepared in the reaction above in the reforming conditions Roh magna silicate catalyst 2
0gと、その上部に市販の改質触媒(UOP社製、R-6 And 0 g, commercially available reforming catalyst (UOP Inc. thereon, R-6
2)100gを充填した反応容器の上部より水添脱硫した表1に示した性状を有する脱硫重質ナフサ留分及び水素ガスを供給し、温度500℃、圧力10kg/cm 2 G、L 2) 100 g was fed desulfurizing heavy naphtha fraction and hydrogen gas having properties shown in Table 1 were hydrodesulfurization from the top of the reaction vessel filled, temperature 500 ° C., a pressure 10kg / cm 2 G, L
HSV1.0h -1 、水素/油モル比3.2の条件下で改質反応を行った。 HSV1.0h -1, were reforming reaction under the conditions of a hydrogen / oil molar ratio 3.2. 48時間後の反応生成物の組成を表2に示した。 The composition of the reaction product after 48 hours are shown in Table 2.

【表1】 [Table 1]

【表2】 [Table 2]

【0022】(比較例)上記実施例で用いた改質触媒と同じ触媒100g反応容器に充填し、実施例と同じ条件で改質反応を行った。 [0022] (Comparative Example) was charged into the same catalyst 100g reaction vessel as the reforming catalyst used in the above examples were subjected to reforming reaction under the same conditions as in Example. 48時間後の反応生成物の組成を表2に示した。 The composition of the reaction product after 48 hours are shown in Table 2.

【0023】この結果から明らかなように、改質触媒とゼオライト含有芳香族化触媒とを並行して用いることにより、芳香族炭化水素、特にはベンゼン、トルエンの収率を高めることができる。 [0023] As is apparent from this result, by using in parallel with the reforming catalyst and the zeolite-containing aromatization catalyst, aromatic hydrocarbons, in particular can increase benzene, the yield of toluene.

【0024】 [0024]

【発明の効果】本発明は、ナフサ留分から芳香属炭化水素、特にはベンゼン、トルエンの含有量の高い留分を製造できるという効果を奏する。 According to the present invention, an effect that aromatic hydrocarbons from naphtha fraction, in particular can be produced benzene, a higher fraction of the content of toluene.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 中田 光信 愛知県知多市北浜町25番地 日本鉱業株式 会社知多製油所内 ────────────────────────────────────────────────── ─── front page of the continuation (72) inventor 25 address, Aichi Prefecture Chita City Kitahama-cho, Mitsunobu Nakata Japan mining Industry Co., Ltd. Chita refinery

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 ナフサ留分を改質触媒及びゼオライト含有芳香族化触媒と改質条件下に接触させることを特徴とする高芳香族炭化水素含有留分の製造方法。 1. A highly aromatic hydrocarbon-containing fraction method of manufacturing, characterized by contacting the naphtha fraction to the reforming catalyst and the zeolite-containing aromatization catalyst and the reforming conditions.
  2. 【請求項2】 ナフサ留分を改質触媒に引き続いてゼオライト含有芳香族化触媒と改質条件下で接触させることを特徴とする高芳香族炭化水素含有留分の製造方法。 2. A high aromatic hydrocarbon containing fraction method of manufacturing which is characterized in that the naphtha fraction subsequent to the reforming catalyst is contacted with the zeolite-containing aromatization catalyst and the reforming conditions.
  3. 【請求項3】 ナフサ留分を改質触媒とゼオライト含有芳香族化触媒とが重量比で95:5〜60:40で充填された触媒床と改質条件下で接触させることを特徴とする高芳香族炭化水素含有留分の製造方法。 In 3. reforming catalyst and the zeolite-containing aromatization catalyst and the weight ratio of the naphtha fraction 95: 5-60: wherein the contacting with the catalyst bed and the reforming conditions, filled with 40 process for producing a high aromatic hydrocarbon containing fraction.
JP32626892A 1992-11-12 1992-11-12 Production of fraction containing highly aromatic hydrocarbon Pending JPH06145672A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5865986A (en) * 1994-09-28 1999-02-02 Mobil Oil Corporation Hydrocarbon conversion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5865986A (en) * 1994-09-28 1999-02-02 Mobil Oil Corporation Hydrocarbon conversion

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