JP2854484B2 - Hydroprocessing of kerosene oil fraction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for hydrotreating a kerosene gas oil fraction, and more particularly to a kerosene fraction or various types of gas oil fractions such as light gas oil, heavy gas oil, cracked gas oil, and vacuum gas oil. Alternatively, efficiently remove sulfur from these mixtures,
The present invention relates to a method for hydrotreating a kerosene oil fraction for producing useful hydrocarbon oils having a high desulfurization rate and good properties with good productivity.

[0002]

2. Description of the Related Art Various fractions obtained from atmospheric or reduced pressure distillation of crude oil and cracked oil obtained by cracking thereof usually contain sulfur content of up to several percent. The technology (desulfurization technology) for sufficiently removing such sulfur by hydrotreating is extremely important from the viewpoint of environmental protection (prevention of air pollution). In addition, by using hydrocarbon oil, which has been desulfurized by hydrogenation treatment and improved in properties, as a fuel or raw material oil, a combustion reaction or a conversion reaction, particularly a catalytic reaction that dislikes sulfur content [catalytic combustion, exhaust gas catalyst purification treatment (denitration, etc.) ), Catalytic cracking process, etc.] can be significantly improved.

[0003] In view of the above, the importance of hydrotreating technology has been increasing more and more in recent years, especially in the case of kerosene and light oil fractions (ie, kerosene, light gas oil, heavy gas oil, vacuum gas oil,
In the hydrotreatment of gas oils such as cracked gas oils), there is a demand for the development of a hydrotreating catalyst (desulfurization catalyst) that has a high desulfurization activity and can produce a product oil with good properties with good productivity.

[0004] As such a desulfurization catalyst, a metal component having hydrodesulfurization activity (particularly, Ni-containing catalyst) is coated on a refractory oxide-based catalyst carrier mainly composed of refractory oxides (alumina, silica alumina, titania, etc.). Mo, Co-Mo, Ni-
Those carrying a combination of a group VIA metal and a group VIII metal such as W, Co-W, etc.) are generally widely used.

In general, the catalytic performance of a supported metal catalyst generally differs depending on the preparation method, even when the type of the carrier and the supported metal component are the same. , Etc.). Accordingly, it is expected that the desulfurization catalyst (hydrotreating catalyst) having the above-described structure is also expected to greatly differ in catalytic performance such as desulfurization activity depending on the preparation method. Importantly, in fact, various catalyst preparation techniques have been proposed to improve the reaction results such as desulfurization activity.

[0006] For example, Japanese Patent Publication No. 3-12935 discloses that malic acid is added to an aqueous solution containing a salt of a group VIA metal and a salt of a group VIII metal, and ammonia is further allowed to act on the solution. A method has been proposed in which after adjusting the pH, the solution is impregnated into a carrier (a refractory oxide-based catalyst carrier such as alumina) and then calcined to obtain a hydrotreating catalyst. However, this method is harmful because toxic and flammable ammonia vapor is generated during the preparation of the catalyst, and the reaction results of the obtained catalyst in the hydrotreatment of the kerosene / oil fraction are not good. I want to.

Japanese Unexamined Patent Publication (Kokai) No. 4-166232 discloses that a refractory oxide-based catalyst carrier such as alumina is coated with a periodic table VI.
A method is disclosed in which a polyhydric alcohol is added to a catalyst precursor supporting a salt of a Group A metal and a salt of a Group VIII metal, followed by drying at a temperature of 200 ° C. or less to obtain a hydrotreating catalyst. Have been. However, in this method, since the polyhydric alcohol is added after the active metal component is supported, the effect of improving the supported state of the active metal component is small, and the calcination is performed at a low temperature. Polyhydric alcohol remains, which causes coking during catalyst pretreatment or catalytic reaction, which adversely affects catalytic performance. In fact, with the catalyst obtained by this method, the effect of improving the desulfurization activity for the hydrotreatment of the kerosene gas oil fraction is insufficient, and the reaction results are not good.

In addition to these, an alumina carrier having a specific pore distribution is prepared by adding polyethylene glycol to an alumina hydrogel and calcining the alumina hydrogel, and the desulfurizing active metal component as described above is supported on the alumina carrier. A method of preparing a hydrotreating catalyst has also been proposed (JP-A-52-104498, JP-A-54-104498).
-104493). However, in this catalyst preparation method, there are problems such as the pore volume of the alumina support being too large, and the mechanical strength of the support (and therefore of the catalyst) being low. In this case, since the polyethylene glycol is removed by baking before the active metal component is added, and does not directly affect the supported state of the metal component, the effect of improving the supported state of the metal component is insufficient. is there. In fact, it is hard to say that the catalyst obtained by this method has a good reaction result such as desulfurization activity for the hydrotreatment of the kerosene oil fraction.

As described above, various attempts have been made to improve hydrotreating catalysts, but none of these catalysts is still insufficient in terms of activity and performance as a catalyst for hydrotreating kerosene and gas oil fractions. There was a problem that it is.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to improve the catalyst preparation method, in particular, by improving the method of supporting the active metal component, to obtain sufficient activity (especially desulfurization activity) and performance for hydrotreating kerosene gas oil fractions. Effective catalysts have been developed, and by using these catalysts, sulfur can be efficiently removed from various types of gas oils such as kerosene, light gas oil, heavy gas oil, vacuum gas oil, cracked gas oil, etc. It is an object of the present invention to provide an improved kerosene gas oil hydrotreating method which is a method for producing useful hydrocarbon oils having high properties and good properties (desulfurized kerosene, desulfurized gas oil, etc.) with high productivity.

[0011]

Means for Solving the Problems To achieve the above object, the present inventors have prepared a catalyst preparation method for obtaining an efficient catalyst for the hydrotreating of kerosene oil fraction (particularly desulfurization reaction). In particular, as a result of intensive studies on the method of supporting the active metal component), for example, a compound of a Group VIA metal and / or a compound of the Periodic Table Group VI on a refractory oxide-based carrier mainly composed of various refractory oxides such as alumina and silica alumina. Alternatively, when carrying a compound of a Group VIII metal, these compounds have a hydroxyl group and / or an ether bond and a molecular weight of 150
As described above, a catalyst obtained by impregnating a carrier with an aqueous solution containing a water-soluble organic compound that is not an acid to support a metal compound, and then calcining under appropriate conditions is used to prepare various kerosene oil fractions (kerosene,
Alternatively, it exhibits high activity and good performance in the hydrotreating reaction (especially desulfurization reaction) of the above various light oils, etc., and has a high degree of desulfurization and various useful hydrocarbon oils having good properties (desulfurized kerosene, desulfurized gas oil, etc.). ) Can be produced efficiently, and the present invention has been completed based on these findings and facts.

That is, according to the present invention, a compound of Group VIA metal and / or Periodic Table VI is added to a refractory oxide catalyst carrier.
An aqueous solution containing a compound of a Group II metal and a water-soluble organic compound having a molecular weight of 150 or more and having a hydroxyl group and / or an ether bond (however, an acid is excluded) is impregnated with the metal compound supported on a carrier. The kerosene oil fraction or the gas oil fraction or a mixture thereof is contacted with the hydrotreating catalyst prepared by calcining in the above in the presence of hydrogen, and the kerosene oil fraction is characterized by being subjected to hydrotreatment. The present invention provides a hydrotreating method.

[0013] In the method of the present invention, the specific method (supporting method) for hydrotreating a kerosene gas oil fraction is carried out.
Is used.

As the refractory oxide-based catalyst carrier used for preparing the catalyst, various ones such as those used or proposed as a carrier for a conventional hydrotreating catalyst can be used. For example, alumina, silica, magnesia, titania, a single oxide-based carrier such as zirconia, or a composite oxide-based carrier such as silica alumina, silica magnesia, silica titania, alumina titania, alumina boria, silica alumina magnesia,
Furthermore, a composition or a composite carrier containing at least one of these as a component can be mentioned.
Among these, alumina carriers such as alumina and silica alumina are particularly preferably used.

It is to be noted that these carriers may be subjected to appropriate pretreatment such as surface area control and pore control as required, and may be used in advance with improved characteristics. In addition, these carriers include, for example, molded products or granulated products such as fine particles, powders, granules, beads, pellets, extruded products, and the like, and further, monoliths (for monoliths). And the like can be used in various shapes and sizes.

The refractory oxide-based catalyst carrier is a prepared starting metal compound that becomes a metal component (hereinafter, referred to as an active metal component) that exhibits sufficient activity particularly in a desulfurization reaction during a hydrogenation reaction. It carries a compound of a Group VIA metal and / or a compound of a Group VIII metal of the periodic table (hereinafter, the prepared raw metal compound may be referred to as an active metal compound).

The group VIA metal of the periodic table is usually
Molybdenum and tungsten are preferred, while Group VIII metals of the periodic table are usually cobalt, nickel,
Iron and the like are preferred.

As a type or combination of supported metals that provide a particularly suitable hydrotreating catalyst (desulfurization catalyst), in the case of a single metal supported system, for example, nickel and molybdenum can be mentioned. In the case of the system, for example, cobalt molybdenum, nickel molybdenum, nickel tungsten, nickel molybdenum tungsten, cobalt molybdenum tungsten, cobalt nickel molybdenum, cobalt nickel molybdenum tungsten, etc. /
Or a combination of (nickel) and (molybdenum and / or tungsten), a system in which iron or another metal is added thereto, or an iron-molybdenum system.

If necessary, other metal components may be supported in addition to these metal components.

When the metal is supported on the carrier, these metals include, for example, halides such as oxides, nitrates, sulfates, carbonates, basic carbonates and chlorides, inorganic compounds such as ammonium salts and ammine complexes, and oxalic acid. Salts, organic acid salts such as acetates, carbonyl complexes, can be used as compounds of various types and forms such as various organic complex compounds such as acetylacetonato complexes, but in the case of cobalt, nickel and iron, Usually, water-soluble salts such as nitrates and acetates are preferably used. On the other hand, in the case of molybdenum and tungsten, ammonium paramolybdate, ammonium metamolybdate, ammonium paratungstate, ammonium metatungstate and the like are usually used. Molybdate, tungstate, etc. are preferably used.

The loading amount of these active metal components is calculated as the weight% of the metal per weight of the obtained catalyst, and is usually 0.5 to 30% by weight for the group VIA metal of the periodic table.
And the periodic table VIII
The group metal is usually preferably selected in the range of 1 to 50% by weight.

The hydrotreating catalyst used in the hydrotreating method of the present invention is prepared by supporting a suitable active metal compound on a suitable refractory oxide-based catalyst carrier as described above. Can be the same as in the case of this type of conventional hydrotreating catalyst,
In the case of the present invention, when the active metal compound is supported on the refractory oxide-based catalyst carrier, the active metal compound has a hydroxyl group and / or an ether bond and a molecular weight of 1
It is important that the carrier is impregnated with an aqueous solution containing a water-soluble organic compound which is not less than 50 and is not an acid (hereinafter, the compound is referred to as a water-soluble organic compound [I]), and is supported.
The object of the present invention is achieved by using the hydrotreating catalyst prepared by supporting the catalyst in this manner.

The water-soluble organic compound [I] has a hydroxyl group and / or an ether bond, has a molecular weight of 150 or more,
Any type and structure of water-soluble organic compound that is not an acid may be used, and these may be used alone or in a combination of two or more.
Here, the water-soluble organic compound that is not an acid is an organic compound having sufficient solubility or affinity for water,
It refers to a compound that is not generally regarded as an acidic compound as a whole molecule (preferably, a compound having no acidic group such as a free carboxyl group or a sulfonic acid group). That is, as long as the compound is not a so-called acidic compound, it may have another functional group such as an ester group or an amino group in addition to a hydroxyl group or an ether bond. The molecular weight is preferably 200 or more.

There are a wide variety of such water-soluble organic compounds [I]. Among them, preferred ones are, for example, polyethylene glycol, polyoxyethylene phenyl ether, polyoxyethylene octyl phenyl ether. Ether-containing water-soluble polymers such as, for example, alcoholic hydroxyl group-containing water-soluble polymers such as polyvinyl alcohol, saccharose, various sugars such as glucose, methylcellulose, water-soluble polysaccharides such as water-soluble starch or derivatives thereof. it can.

[0025]

The active metal compound is carried by an impregnation method such as a vacuum impregnation method and a heat impregnation method. that time,
Each component to be supported may be added and mixed at the same time, or may be added and mixed sequentially.

At this time, the proportion of the water-soluble organic compound [I] coexisting or added to the supporting system is usually based on 100 parts by weight of the dry weight of the refractory oxide-based catalyst carrier used.
It is preferable to select from the range of 0.1 to 100 parts by weight, and it is particularly preferable to select from the range of 1 to 50 parts by weight. If this proportion is less than 0.1 part by weight based on the above criteria, the effect of adding the water-soluble organic compound [I] will not be sufficiently exhibited, while if it exceeds 100 parts by weight, the solubility of the active metal compound will be poor. For example, it may be difficult to carry the film uniformly.

The loading may be carried out in the co-presence of other additional components, if necessary, in addition to the water-soluble organic compound [I]. For example, in order to improve the stability of the aqueous solution of the active metal compound to be carried and to carry out the carrying more uniformly and stably, it is preferred to add a suitable organic acid such as a carboxylic acid. In this case, various organic acids can be used, and specific examples include oxalic acid, tartaric acid, succinic acid, malonic acid, malic acid, citric acid, formic acid, acetic acid, and propionic acid. Can be.
One or more of these organic acids may be added as necessary.

In this case, the proportion of the organic acid to be added is preferably selected, for example, in the range of 0.1 to 100 parts by weight based on 100 parts by weight of the dry weight of the refractory oxide-based catalyst carrier used. It is particularly preferable to select from 5 to 50 parts by weight. If this ratio is less than 0.1 part by weight based on the above criteria, the effect of adding the organic acid will not be sufficiently exhibited, while if it exceeds 100 parts by weight, the solubility of the active metal compound will be poor. On the contrary, it may be difficult to carry the film uniformly.

The hydrotreating catalyst used in the method of the present invention can be obtained by supporting a predetermined active metal compound as described above, followed by drying and calcining as appropriate.

The drying temperature is usually 50 to 15
It is preferable to select the temperature in the range of 0 ° C, preferably 80 to 130 ° C.

The calcination is usually preferably carried out at a suitable temperature in the presence of air or oxygen, whereby the water-soluble organic compound [I] or the like contained in the solid after the support or after the support is dried. It is preferable to sufficiently remove the organic components. If a large amount of these organic components remain in the catalyst, they may cause caulking during the catalytic reaction or during the pretreatment, which may hinder performance such as catalytic activity.

The firing temperature is usually selected in the range of 400 to 650 ° C., preferably 500 to 600 ° C. In addition, after the above-mentioned loading and before performing drying or baking, you may shape | mold a load as needed.

As described above, a desired hydrotreating catalyst having excellent desulfurization activity and good performance can be suitably obtained.

Hereinafter, the hydrotreating catalyst prepared by supporting the active metal compound in the presence of the water-soluble organic compound [I] is referred to as a hydrotreating catalyst [A].

In the method for hydrotreating a kerosene oil fraction of the present invention, a kerosene fraction or a gas oil fraction or a mixture thereof is used as a feedstock oil, and the feedstock oil is treated as described above in the presence of hydrogen gas. The prepared hydrotreating catalyst [A] is contacted and hydrotreated, whereby sulfur is efficiently removed from the feedstock oil, and the useful hydrocarbon oil having a high desulfurization degree and good properties (desulfurized kerosene and desulfurized oil) Gas oil etc.) with good productivity.

As the kerosene fraction used for the feedstock, a light gas oil fraction (LGO) and a heavy gas oil fraction (HGO) having various boiling points obtained by atmospheric distillation or vacuum distillation of crude oil are used.
GO), gas oil fractions such as vacuum gas oil fractions (VGO), and various gas oil fractions such as cracked gas oil fractions having various boiling points obtained by thermal cracking or catalytic cracking of heavy oil etc. can do.

These kerosene fractions and gas oil fractions may be used alone without mixing predetermined fractions, or two or more fractions may be appropriately mixed and used. . Of course, if necessary, a mixed fraction of a kerosene fraction and a gas oil fraction may be used, and a gas oil fraction having a wide boiling point range may be used as the gas oil fraction.

In addition, the feedstock contains other lighter fractions and heavier fractions in addition to the kerosene fraction and gas oil fraction within a range not to impair the object of the present invention. Or a middle distillate such as a reduced pressure flash may be added.

The sulfur content in the feedstock to be subjected to the hydrotreating is not particularly limited, but usually one having a sulfur content in the range of 0.5 to 2.0% by weight is suitably used.

In carrying out this hydrogenation treatment, the hydrogenation treatment catalyst [A] may be used as it is in the reaction, but if necessary, it may be subjected to a reduction treatment with hydrogen or the like or a preliminary sulfurization with hydrogen sulfide or the like. The reaction may be performed after appropriately performing the pretreatment of the above. The hydrotreating catalyst [A] may be used by diluting it with the refractory oxide catalyst carrier such as alumina or silicon carbide, if necessary, or a suitable guard catalyst. Alternatively, it may be used together with a carrier.

The reaction conditions suitably adopted for this hydrotreating are as follows.

That is, the reaction temperature is usually from 200 to 4
It is preferable to select a temperature in the range of about 50 ° C., preferably about 250 to 380 ° C. The reaction pressure is hydrogen pressure,
Usually, about 10 to 100 kg / cm ² G, preferably
It is preferable to select a range of about ^{20 to} 80 kg / cm ² G. The liquid hourly space velocity (LHSV) is usually 0.5 to
About 10h ^-1, preferably, suitable to select a range of about 1~5h ^-1. The supply ratio (H ₂ / Oil) of the hydrogen gas and the feedstock oil is generally selected to be in the range of about 50 to 400 Nl / kl, preferably 100 to 300 Nl / kl.

As the reaction type, various types such as a fixed bed, a fluidized bed, a moving bed, and a boiling bed can be applied, but the fixed bed is usually most preferable in view of easiness of operation and economy of the apparatus. .

By hydrotreating as described above, the vacuum gas oil and the light gas oil or the hydrocarbon oil (heavy gas oil or the like) added thereto can be simultaneously and efficiently hydrogenated (desulfurization treatment or the like). A product oil having excellent properties can be obtained.

The desulfurized product obtained by the hydrotreatment in this way is useful as it is or as a raw material for conversion into fuels and various hydrocarbons. However, it is usually sent to a distillation step to obtain various desired various products. It is fractionated into fractions.

The various fractions thus obtained have a remarkably low sulfur content. The sulfur content of desulfurized vacuum gas oil is usually about 0.3% or less, and the sulfur content of desulfurized light gas oil is usually 0% or less. It can be easily reduced to about 0.05% or less.

[0048] The desulfurized vacuum gas oil thus recovered is used for FC
It can be suitably used as a raw material oil or a component thereof in the C process, and thereby, a high-quality gasoline with extremely low sulfur content can be stably obtained at a high yield.

On the other hand, the obtained light oil such as desulfurized light gas oil is
For example, it can be suitably used for various uses such as a fuel such as diesel oil.

Further, other obtained fractions such as naphtha and kerosene can be suitably used in various fields.

[0051]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples of the present invention and Comparative Examples thereof, but the present invention is not limited to these Examples.

Example 1 Ammonium paramolybdate [(NH ₄ ) ₆ Mo ₇ O _24.
4H ₂ O)], 32.1 g, cobalt nitrate [Co (NO ₃ )]
₃ ] 27.1 g, polyethylene glycol 400 [HO
_{- (CH 2 CH 2 O)} n -H: molecular weight about 400] 10.0
g and malic acid [HOCOCH ₂ CH (OH) COO
H: molecular weight 134] was dissolved in ion-exchanged water to prepare an aqueous solution (impregnation liquid) having a total amount of 86 ml.

The impregnating solution was supported on 200 g of a columnar alumina carrier (particle diameter 2 mm) having a specific surface area of 220 m ² / g by a vacuum impregnation method. The support was dried at 120 ° C. for 3 hours, and then calcined at 550 ° C. for 3.0 hours in an air stream to obtain a desired catalyst. The catalyst thus obtained contains about 4% by weight of Co as CoO and about 15% by weight of Mo as MoO _{3 based on} its dry weight.

Next, 50 cc of the catalyst was charged into a reaction tube of a fixed bed flow type reactor, and as a pretreatment, 250 g of a raw material oil [Middle Eastern light gas oil (LGO)] having the properties shown in Table 1 was added to the catalyst layer. The catalyst was presulfurized by flowing at 24 ° C. for 24 hours. Thereafter, a reaction temperature of 310 to 350 ° C. (the temperature was gradually increased to each of 310, 330 and 350 ° C.), a pressure of 30 kg / cm ² G,
Hydrogen gas / feed oil ratio 200Nl / kl, LHSV 4.0
Under the condition of h- ¹ , the raw material oil [Middle Eastern light oil (LGO)] having the properties shown in Table 1 was circulated together with hydrogen gas, and the raw material oil was hydrotreated (hydrodesulfurized). The evaluation results of this reaction are shown in Table 2 together with other examples and comparative examples.

[0055]

[Table 1]

[0056]

[Table 2]

Example 2 A catalyst was prepared in the same manner as in Example 1, except that 2.0 g of polyoxyethylene octylphenyl ether [molecular weight: about 650] was used instead of polyethylene glycol 400. Preliminary sulfurization and hydrotreating reactions were performed on this catalyst in the same manner as in Example 1, and the reaction results such as desulfurization activity were evaluated. Table 2 shows the results.

Example 3 In Example 1, 200 g of a columnar alumina carrier (particle diameter 2.0 mm) having a specific surface area of 263 m ² / g was used instead of the alumina carrier having a specific surface area of 220 m ² / g, and the metal was changed to Co.
A catalyst was prepared in the same manner except that 6% by weight of O and 22.5% by weight of MoO ₃ were supported. This catalyst was subjected to pre-sulfidation and hydrotreating reactions in the same manner as in Example 1,
Reaction results such as desulfurization activity were evaluated. Table 2 shows the results.

Comparative Example 1 A catalyst was prepared in the same manner as in Example 1 except that polyethylene glycol 400 was not used. Preliminary sulfurization and hydrotreating reactions were performed on this catalyst in the same manner as in Example 1, and the reaction results such as desulfurization activity were evaluated.
Table 2 shows the results.

Comparative Example 2 A catalyst was prepared in the same manner as in Example 1 except that 10.0 g of ethylene glycol [molecular weight 62] was used instead of polyethylene glycol 400. Preliminary sulfurization and hydrotreating reactions were performed on this catalyst in the same manner as in Example 1, and the reaction results such as desulfurization activity were evaluated. Table 2 shows the results.

Comparative Example 3 A catalyst was prepared in the same manner as in Example 3, except that polyethylene glycol 400 was not used. Preliminary sulfurization and hydrotreating reactions were performed on this catalyst in the same manner as in Example 1, and the reaction results such as desulfurization activity were evaluated.
Table 2 shows the results.

As is clear from the results of Examples 1 to 3 and Comparative Examples 1 to 3, polyethylene glycol 40
It has been found that the desulfurization activity is improved when a catalyst prepared and supported by co-existing a water-soluble organic compound [I] (molecular weight: 150 or more) such as O or polyoxyethylene octyl phenyl ether (molecular weight: 150 or more) is used. .

In the above Examples and Comparative Examples, the results when the organic acid (malic acid) is contained in the impregnation solution are shown. The catalysts were adjusted in the same manner as described above, and the reaction results such as desulfurization activity were evaluated in the same manner for each catalyst. ) Was observed. That is, it was confirmed that the desulfurization activity of the catalyst was improved if the active metal compound was supported in the presence of the water-soluble organic compound [I], with or without the impregnation solution containing an organic acid. .

When the type of carrier and / or the type and composition of the active metal were variously changed, the effect of adding the water-soluble organic compound [I] (the effect of improving the desulfurization activity) was similarly observed. This indicates that the use of the water-soluble organic compound [I] is effective regardless of the type of carrier, the type and composition of metal activity, and the like.

[0065]

According to the hydrotreating method of the present invention, sulfur is efficiently removed from various types of gas oils such as kerosene, light gas oil, heavy gas oil, vacuum gas oil, cracked gas oil and the like, or a mixture thereof, and the desulfurization rate is reduced. And high-quality useful hydrocarbon oils (desulfurized kerosene, desulfurized gas oil, etc.) can be produced with high productivity.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Iino 1280 Kamiizumi, Sodegaura-shi, Chiba Idemitsu Kosan Co., Ltd. (56) References JP-A-47-16388 (JP, A) JP-A-6-226108 ( JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C10G 45/06-45/08 C10G 49/04-49/08

Claims (3)

(57) [Claims] 1. The periodic table VIA is applied to a refractory oxide-based catalyst carrier.
Water-soluble organic compound having a molecular weight of 150 or more and having a hydroxyl group and / or an ether bond with a compound of a group metal and / or a compound of a group VIII metal of the periodic table (excluding acids)
A metal compound is supported on a carrier by impregnating with an aqueous solution containing, and a hydrotreating catalyst prepared by calcining at 400 ° C. or higher, a kerosene fraction or a gas oil fraction or a mixture thereof in the presence of hydrogen. A hydrotreating method for a kerosene light oil fraction, wherein the hydrotreating is performed by contacting with a gas. 2. The method according to claim 1, wherein the water-soluble organic compound having an ether bond is polyethylene glycol. 3. The method according to claim 1, wherein the aqueous solution is an aqueous solution further containing malic acid.