JP6175640B2 - A catalyst for producing a hydrogen-containing gas and a method for producing a hydrogen-containing gas using the catalyst. - Google Patents

Description

The present invention relates to a catalyst composition for producing a fuel gas containing hydrogen gas using a non-fossil raw material and a method for producing a fuel gas containing hydrogen gas using the same.

(Current status of non-fossil fuel production)
Energy resources close to zero emission that do not substantially increase carbon dioxide are attracting attention. Biomass resources consisting of carbon, hydrogen, oxygen, and the like by photosynthesis of carbon dioxide in the air have been studied as one of energy resources close to zero emissions. Since developed countries mainly focus on energy resources that are close to zero emissions, it has been pointed out that in developing countries, there is a possibility of cultivation aimed at converting energy instead of crops. Originally, the production of crops for the purpose of obtaining energy in cultivated land where food should be produced is regarded as a problem.

(Conditions to prepare as non-fossil resources that do not compete with food)
Under such circumstances, establishment of technology for utilizing biomass resources that does not compete with food is an urgent issue. Examples of such biomass resources include livestock excrement, pruned branches, unused wood, seaweed and the like. However, these biomass resources are (a) many of these resources have high water content, that is, there is a demerit of low energy density, and (b) artificial dense areas with high energy demand and these biomass can be obtained. It is necessary to transport medium and long distances because the area is remote. (C) These biomasses are often not in liquid form but in bulk. Thus, in addition to the low energy density of these biomass resources, the porosity is high during transportation due to the bulk body, and the energy consumption associated with transportation is increased due to the long distance from the energy demand area, etc. Because of this, it is difficult to use.

(Advantages of using used cooking oil as a non-fossil resource)
In the case of vegetable oils and fats used in tempura oil, it is considered that about 1 liter has a calorific value of about 32 MJ (about 7800 kcal). For example, when considering spent tempura oil, (a) it is easier to collect in urban areas (regions where there is a lot of energy demand and areas where biomass (oils and fats) are generated); In most cases, it is liquid at room temperature (high calorific value and low porosity during transportation), and (c) used oil does not compete with food. It is a high biomass resource.

(Current state of edible oil consumption and recovered oil in Japan)
In 2006, about 2.37 million tons of edible fats and oils were consumed in Japan, of which about 450,000 tons were recovered and about 180,000 tons were unused. Edible oils include soybean oil centered on unsaturated fatty acid glycerides, palm oil containing saturated fatty acid glycerides, and the like. The used cooking oil includes non-vegetable oils and fats such as fish oil and animal oils mixed during cooking. In recent years, fatty acid methyl ester (FAME, commonly known as biodiesel fuel) has attracted attention as an alternative to light oil, but from the viewpoint of fuel properties, mixing of fats and oils containing saturated fatty acid glycerides and animal fats and oils is not preferred. This seems to be one reason why effective use does not progress.

(Stable supply by blending with fossil energy)
When used vegetable oil is used as biomass energy, it is important for promoting the spread to convert it into a substance that can be expected to spread in the future. In addition, it has been pointed out that a stable supply is always difficult as a problem common to biomass energy. From this point of view, it is also important to be able to use blended with fossil energy.

(Importance of hydrogen energy, issues related to resource utilization technology such as used oil)
Fuel cell vehicles (FC-EV) are expected as next-generation vehicles, and hydrogen station demonstration tests have begun. Hydrogen is attracting attention as an energy medium (material) that can be expected to spread in the future. In addition to electrolysis of water, steam reforming of light petroleum fractions such as alcohol, city gas, liquefied petroleum gas (LPG), and light naphtha is well known as a hydrogen production technique. In particular, steam reforming of light petroleum fractions having up to about 5 carbon atoms is the most popular technique. The steam reforming process, a higher hydrocarbon, such as for becoming remarkably like-carbon deposition, it is known that the handling becomes difficult.

For example, linoleic acid known as a fatty acid constituting vegetable oil is represented by C ₁₇ H ₃₁ COOH. Since this is a triglyceride of fatty acid, vegetable oil has a molecular weight of 878. Compared to hydrocarbons that have been used as raw materials for hydrogen production (mixtures of hydrocarbons having about 8 carbon atoms), the molecular weight of vegetable oil is extremely large. It is considered that it is extremely difficult to convert such fats and oils into gas containing hydrogen by steam reforming in the prior art (Patent Document 1).

JP 2002-160904 A

(Significance of hydrogen-containing gas conversion from used vegetable oil)
If the vegetable oil can be reformed and converted to a gas containing hydrogen, it can be supplied by blending with hydrogen obtained from a fossil-based raw material such as naphtha. For this reason, the end user can use equipment using hydrogen fuel, such as a fuel cell vehicle, without being aware of whether hydrogen is derived from non-fossil or fossil. Technology that obtains hydrogen-containing gas from biomass resources such as vegetable oil is considered to be increasingly important because it can minimize the economic burden on end users when using biomass-derived energy resources. It is done.

(Objective of the present invention for solving the problem and specific technical problem to be solved by the present invention)
Therefore, the result inventors made an intensive research and development technique for converting a gas containing hydrogen from extremely vegetable fats molecular weight is not multi compared to like naphtha feedstock have been used in the conventional hydrogen production process And a catalyst used in the reforming reaction, using a catalyst composition containing nickel or ruthenium as an active ingredient on a carrier containing boron compound and alkaline earth metal compound and aluminum oxide, and water vapor and air or water vapor. By supplying oxygen, it was found that the vegetable oil was stably reformed for a long time and contained hydrogen, and the invention was completed.

That is, the present invention (1) alkaline earth metal in terms of oxide, 12 wt.% Or more and 20 wt.% Or less in terms of catalyst weight, boron in terms of sodium tetraborate / decahydrate, 1.0 wt. % To 5.0 wt.% And the balance is made of aluminum oxide, and with respect to physical properties, the support has a specific surface area of 180 m ² / g to 280 m ² / g and a pore volume of 0.21 ml / g to 0.31 ml / g. , in terms of metal nickel content is active metal, the catalytic you containing the catalyst weight 5.0 wt.% or more 20.0 wt.% or less, reactor internal pressure of 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G In the following, the reaction temperature is 630 ° C. or higher and 750 ° C. or lower, the water vapor / carbon ratio is 2.0 or higher and 2.9 or lower, the O / C ratio is 0.5 or higher and 0.85 or lower, and the vegetable oil supply is 1.6 × 10 ⁻² C-mol with respect to 1.0 g of catalyst. / h contacting at least ^{3.0 × 10 -2 C-mol /} h following conditions are method for producing a hydrogen-containing gas, wherein, (2) an alkaline earth metal oxide conversion, catalyst 12 wt.% Or more 20 wt.% Or less by weight, boron sodium tetraborate decahydrate terms, the catalyst weight 1.0 wt.% Or more 5.0 wt.% Or less and the balance being aluminum oxide, and with respect to physical properties Is a support having a specific surface area of 180 m ² / g or more and 280 m ² / g or less and a pore volume of 0.21 ml / g or more and 0.31 ml / g or less, the ruthenium content as an active metal is converted into metal, 3.0 wt. percent 7.5 wt.% to be that catalysts containing less, in the following reactor pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G, reaction temperature 630 ° C. or higher 750 ° C. or less, water vapor / carbon ratio 1.0 2.0 or less, O / C ratio of 0.5 or more and 0.85 or less, vegetable oil supply amount is contacted with 1.0 g of catalyst under conditions of 5.3 × 10 ⁻² C-mol / h or more and 0.4 C-mol / h or less. A method for producing a hydrogen-containing gas,
(3) Alkaline earth metal converted to oxide, 12 wt.% To 20 wt.% Based on catalyst weight, and boron converted to sodium tetraborate decahydrate, 1.0 wt.% To 5.0 wt. % Or less and the balance is aluminum oxide, and with regard to physical properties, the support has a specific surface area of 180 m ² / g or more and 280 m ² / g or less, and a pore volume of 0.21 ml / g or more and 0.31 ml / g or less is an active metal in terms of metal ruthenium component, the catalytic you containing the catalyst weight 3.0 wt.% or more 7.5 wt.% or less, the reaction temperature in the reactor pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G or less 630 550 ° C or higher, water vapor / carbon ratio of 1.0 or higher and 2.0 or lower, O / C ratio of 0.5 or higher and 0.85 or lower, vegetable oil / white kerosene volume ratio of 0.11 or higher and 19.0 or lower. × a 10 ^-2 C-mol or 0.4C-mol / h production method of a hydrogen oil-containing gas comprising contacting the following conditions, oxidation of (4) an alkaline earth metal Terms, the catalyst weight 12 wt.% Or more 20 wt.% Or less, boron sodium tetraborate decahydrate terms, the catalyst weight 1.0 wt.% Or more 5.0 wt.% Or less and the balance being aluminum oxide, As for the physical properties, the ruthenium content as an active metal is converted into metal on a support having a specific surface area of 180 m ² / g or more and 280 m ² / g or less and a pore volume of 0.21 ml / g or more and 0.31 ml / g or less, based on the weight of the catalyst. 3.0 wt.% or more 7.5 wt.% to be that catalysts containing less, reactor pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G reaction temperature at less 630 ° C. or higher 750 ° C. or less, steam / carbon ratio Is 1.0 to 2.0, O / C ratio is 0.5 to 0.85, and the volume ratio of vegetable oil / decahydronaphthalene is 0.11 to 19.0. The mixed oil supply is 5.3 × 10 ^-2 C-mol or more to 1.0 g of catalyst. A method for producing a hydrogen-containing oil-containing gas characterized by contacting under conditions of C-mol / h or less.

According to the present invention, it is possible to efficiently obtain a fuel gas or the like containing a: hydrogen as a main component from a vegetable oil by steam and oxygen in the air. B: When used vegetable oil is used, it is possible to realize supply of environment-friendly fuel gas and the like.

Hereinafter, the present invention will be disclosed in detail, but this is for explaining the present invention and is not intended to limit the scope of the invention.

(Basic structure of catalyst)
In the catalyst used for the catalytic reforming of used vegetable oil (hereinafter abbreviated as fats and oils) including the spent as disclosed in the present invention, an active metal is supported on a carrier. The carrier component is composed of an alkaline earth metal component, a boron component and aluminum oxide. In addition, addition of a mold release agent, a lubricant, etc. which are added at the time of carrier preparation is not limited.

(Active metals and their precursors)
(nickel)
Regarding the active metal, nickel and ruthenium are preferable, and ruthenium is most preferable. Of these active metal precursors, nickel nitrate, nickel chloride and nickel acetate are preferred, nickel nitrate and nickel acetate are more preferred, and nickel acetate is most preferred.

(ruthenium)
As the ruthenium precursor, ruthenium chloride, ruthenium acetylacetonate and the like are preferable, and ruthenium chloride is more preferable. Of the ruthenium chloride, anhydrous ruthenium chloride, ruthenium chloride trihydrate, and ruthenium chloride n hydrate are preferable, and ruthenium chloride n hydrate is more preferable. With respect to ruthenium chloride n-hydrate, the ruthenium (Ru) content is most preferably 38 wt.% Or more and 41 wt. This is because the ruthenium compound is highly soluble in water and easy to handle.

(Suitable content of active metal)
(Nickel catalyst)
When nickel is selected as the active metal, the nickel content is preferably 5.0 wt.% To 20.0 wt.%, More preferably 10.0 wt.% To 20.0 wt.%, More preferably 12.0 wt. % To 15.0 wt.% Is most preferable. If it is less than this range, sufficient catalytic activity cannot be obtained. In addition, when the range is exceeded, the effect of improving the catalyst performance is saturated, and the technical significance may be diminished, such as an increase in the basic unit in catalyst production.

(Ruthenium-based catalyst)
In the case of selecting ruthenium as the active metal, the ruthenium content is preferably 3.0 wt.% To 7.5 wt.%, More preferably 3.0 wt.% To 5.0 wt.%, More preferably 3.0 wt. % To 4.0 wt.% Is most preferable. If it is less than this range, there is a possibility that problems such as a tendency to increase the cost for recycling ruthenium in the catalyst may occur. If this range is exceeded, the catalyst performance begins to saturate, and its significance is diminished.

(Catalyst carrier components)
As a result of earnest development research on the technology for converting oils and fats into hydrogen-containing gases, it contains alkaline earth metals, boron and aluminum oxide as carrier components of the catalyst used in the reforming reaction.

(Suitable content of alkaline earth metal)
The content of the alkaline earth metal is an alkaline earth metal in terms of oxide, 20.0 wt.% Or less are preferred 12.0 wt.% Or more catalyst weight basis, 12.0 wt.% Or more 18.0 wt.%, More preferably less, 15.0 wt. % To 18.0 wt.% Is most preferable. If the amount is less than this range, the possibility of the catalyst bed becoming clogged increases during the reaction, and if the range is exceeded, the porosity of the support becomes insufficient, and the superiority tends to be lost, for example, the amount of catalyst filling increases. Magnesium oxide, barium oxide, calcium oxide, magnesium carbonate, barium carbonate, calcium carbonate and the like can be preferably selected as the compound containing an alkaline earth metal, magnesium oxide, calcium oxide, and barium oxide are more preferable, and calcium oxide and magnesium oxide are more preferable. Most preferred.

(Suitable content of boron)
For the boron content, sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ · 10H ₂ O) is used. With respect to other boron compounds such as boric acid (H ₃ BO ₃ ), the addition effect is dilute, which is not preferable. The content is preferably 1.0 wt.% Or more and 5.0 wt.% Or less, more preferably 2.5 wt.% Or more and 5.0 wt.% Or less, more preferably 2.5 wt.% Or more and 3.0 wt.% Or less in terms of sodium tetraborate decahydrate. The following are most preferred. If the amount is less than this range, the basic balance of the catalyst is deteriorated, and the suppression effect such as carbon deposition tends to be lowered. Moreover, since the addition effect is saturated when the range is exceeded, the substantial upper limit may be considered to be 5.0 wt.%.

(Suitable content and precursor of aluminum oxide)
The support is the above-mentioned alkaline earth metal oxide and boron content and the balance is aluminum oxide. As the precursor of aluminum oxide, aluminum hydroxide, γ-alumina, α-alumina and the like can be preferably selected, γ-alumina and aluminum hydroxide are more preferable, and aluminum hydroxide is most preferable.

(Physical properties of catalyst carrier)
In order to obtain a predetermined performance, in addition to the catalyst components being in a suitable range, the physical properties of the support as disclosed below should be provided. The specific surface area of the support is preferably 180 m ² / g or more 280 meters ² / g or less, 180 m ² / g or more 240m or less, more preferably ² / g, 180m ² / g or more 220 m ² or less is most preferred. If it is less than this range, the dispersion of the active metal becomes insufficient, and if it exceeds this range, the pore diameter tends to be small, such being undesirable. The pore volume is preferably from 0.21 ml / g to 0.31 ml / g, more preferably from 0.23 ml / g to 0.31 ml / g. If the pore volume is less than the range, the catalyst preparation process becomes complicated. Although the upper limit is not limited from a technical point of view, it may be considered that the upper limit is substantially 0.31 ml / g.

(Catalyst carrier shape)
The shape of the catalyst carrier can be preferably selected from known shapes such as powder, columnar, crushed, spherical, spindle, four-leaf, and three-leaf. A cylindrical shape, a crushed shape, a spherical shape, and a trefoil shape are more preferable, and a cylindrical shape, a crushed shape, and a spherical shape are most preferable.

(Catalyst preparation process)
The catalyst preparation of the present invention comprises a) support preparation step, a) active metal loading step, and c) catalyst heat stabilization step. The preparation step of a) includes, as main steps, a carrier component mixing step, a molding step of the mixture and a molded body firing step. In the active metal supporting step (a), known methods such as impregnation method, incipient wetness method, wet kneading method and dry kneading method can be preferably employed. The catalyst heat stabilization step of c) is important for stably storing the catalyst. After the active metal supporting step of b), the catalyst is calcined in air at a temperature at which the active metal becomes stable as an oxide. The process of performing. Note that the catalyst heat stabilization step of c) is omitted for the ruthenium-based catalyst.

The catalyst of the present invention is obtained after a) a carrier preparation step, a) an active metal supporting step, and c) a preparation step for performing a catalyst heating stabilization step. In the carrier preparation step (a), a) the carrier component mixing step, b) compression molding and sieve (sieving), and c) carrier firing are carried out in the order of a), b) and c). The carrier is calcined at a temperature of 600 ° C. to 680 ° C. in air for 3 hours to 24 hours.

(Addition of porosity improver)
A) In the carrier preparation step, a porosity improver as disclosed below can be added. Although the addition of a porosity improver is not essential, it can be expected to improve the productivity of the catalyst. Therefore, it is desirable to add it as far as the catalyst preparation cost permits.

For example, a process for preparing a carrier composed of magnesium, boron and the balance aluminum oxide is exemplified. Magnesium oxide (MgO) and sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ · 10H ₂ O) And a predetermined amount of the aluminum oxide precursor is added thereto and further mixed. At this time, a porosity improver for the carrier can be added. The addition of a porosity improver is not essential. When a relatively large amount of alkaline earth metal and boron are contained, it can be expected that the productivity of the catalyst is increased by adding it, for example, the variation in porosity in preparing the carrier is reduced.

(Porosity improver)
As the porosity improver, tartaric acid, citric acid, polyvinyl alcohol, partially saponified polyvinyl alcohol, polyvinyl acetate, polyvinyl pyrrolidone, and carboxymethyl cellulose can be preferably used. Tartaric acid, citric acid, stearic acid, polyvinyl alcohol, and carboxymethyl cellulose And stearic acid, tartaric acid, polyvinyl alcohol and carboxymethylcellulose are most preferred. The porosity improver may be used singly or in combination of two or more in any proportion.

(Amount of addition of porosity improver)
The addition amount of the porosity improver is preferably 1 wt.% Or more and 10 wt.% Or less based on the total weight of the carrier precursor, more preferably 3 wt.% Or more and 7 wt.% Or less, and most preferably 5 wt.% Or more and 7 wt.% Or less. . If it is less than this range, the effect of improving the porosity is insufficient, and the technical significance of the addition becomes dilute, which is not preferable. When this range is exceeded, there is a tendency that the effect of improving the porosity is saturated, and the crush strength (SCS) may be lowered depending on the shape of the catalyst.

The above-mentioned porosity improver is removed by being burned when the carrier is fired. It is considered that the porosity is improved when the gas occupied at that time or the portion occupied by the porosity improver becomes a void.

(Catalyst heat stabilization process)
The catalyst heat stabilization step is performed by calcining the nickel-based catalyst at a temperature of 600 ° C. or higher and 680 ° C. or lower in the air for 3 hours or longer and 24 hours or shorter. The purpose is to prevent catalyst changes by making nickel a stable oxide. Since ruthenium-based catalysts may produce sublimable substances such as Ru ⁴⁺ , they are dried at a temperature of about 60 ° C., and the catalyst heat stabilization process in a high temperature range such as nickel-based catalysts is not performed.

(Active metal loading process)
In this step, a known method such as an impregnation method, an incipient wetness method, a wet kneading method, or a dry kneading method can be preferably selected. What is necessary is just to select a well-known method according to a raw material, an installation, a process, etc.

(Method for producing hydrogen-containing gas)
(Method of filling catalyst into reactor)
The catalyst of the present invention is preferably packed in a vertical fixed bed reactor, a horizontal fixed bed reactor, and a U-shaped fixed bed reactor. In filling, dilution filling is performed using a chemically stable and heat-resistant inorganic material (diluent) such as a spherical shape, a crushed shape, a ring shape, and a hollow shape. This is essential for avoiding local heat generation and maintaining a soaking zone. At the time of filling, it is desirable that the catalyst and diluent are sufficiently mixed in a volume ratio of 1: 3 to 1: 1.

(Ratio of diluent / catalyst / diluent)
As an inorganic material used as a diluent, it is easy to uniformly fill the catalyst with an apparent bulk density (ABD). Regarding the ABD of the catalyst (ABD (C)) and the ABD (ABD (D)) of the diluent, the ABD (D) / ABD (C) ratio is preferably 0.8 or more and 1.2 or less, more preferably 0.85 or more and 1.15 or less, and 0.93 or more Most preferred is 1.08 or less. If it is out of this range, the distribution of the catalyst and the diluent becomes non-uniform during filling and during the reaction, and as a result, the temperature distribution of the catalyst bed becomes wide and the hydrogen yield may be impaired.

(Diluent material)
As the diluent, in addition to aluminum oxide, silica-alumina, zirconium oxide, silicon dioxide, zinc oxide and titanium dioxide, minerals (including artificial minerals) such as zeolite, sepiolite and bentonite can be preferably used. Aluminum oxide, silica-alumina, zirconium oxide, zinc oxide, sepiolite and zeolite are preferred, aluminum oxide, silica-alumina, zirconium oxide, zinc oxide and zeolite are more preferred, and aluminum oxide and silica-alumina are most preferred. These may be used alone or as a mixture of two or more.

(Raw oil)
In addition to unused cooking oil (new oil), used cooking oil can be preferably used as the main raw material. In addition, since used cooking oil contains solid content, such as food waste, it is desirable to remove using a wire mesh. As for the used cooking oil, vegetable oil is preferred. In addition to fats and water such as animal fats and oils, fish oil, butter, margarine, etc. that have been transferred from foods, etc., fatty acids generated by hydrolysis, glycerin, and mono- and dihydric alcohols such as methanol and glycol are mixed. However, it can be preferably used when it is in a liquid state from room temperature to 50 ° C. Moreover, it is not influenced by the coloration of used oil.

(Containment limit value of fats and oils other than main raw materials)
The upper limit is preferably 20 vol.% Or less, more preferably 10 vol.% Or less, more preferably 5 vol., For the total fat, fatty acid, glycerin, and alcohol content of animal fats and oils, fish oil, butter, margarine, etc. in the vegetable oil. % Or less is most preferable. Even if the total content exceeds the preferable range, it does not inhibit the reforming reaction of the present invention as long as it is in a liquid state at room temperature to 50 ° C. From the viewpoint of practical use such as difficult management of the manufacturing process, it is desirable to keep within the above range.

(Petroleum hydrocarbons that can be added to feedstock and suitable addition amount)
Petroleum hydrocarbons that can be preferably added to the above-mentioned feedstock oil are white kerosene (JIS-1 kerosene), decahydronaphthalene (decalin), deep desulfurized white kerosene, light naphtha, and heavy naphtha. White kerosene, decahydronaphthalene, and deep kerosene-treated white kerosene are more preferred because they are easy for the raw material supply operation in the hydrogen production of the present invention. When white kerosene is added, the used edible oil / white kerosene volume ratio is preferably 0.11 to 19.0, more preferably 0.25 to 19.0, and most preferably 2.3 to 19.0. There are no operational problems outside this range. However, the substantial range is as described above from the viewpoint of producing a hydrogen-containing gas from used cooking oil and from the viewpoint of blending petroleum hydrocarbons. When adding decalin, the used cooking oil / decalin volume ratio is preferably from 0.11 to 19.0, more preferably from 0.25 to 19.0, and most preferably from 2.3 to 19.0. There are no operational problems outside this range. However, the substantial range is as described above from the viewpoint of producing a hydrogen-containing gas from used cooking oil and from the viewpoint of blending petroleum hydrocarbons.

(Modifier)
Water (steam) and oxygen are used as the modifier. Regarding oxygen, a gas containing 15% or more of oxygen can be preferably used, and air, diluted oxygen, and pure oxygen can be preferably used. Thus, it is preferable to use a gas containing 15% or more of oxygen even if it contains not only air and pure oxygen but also carbon dioxide, carbon monoxide, nitrogen, rare gas, etc. in addition to oxygen. it can.

(Catalyst bed temperature and pressure)
The catalyst bed temperature (reaction temperature) is preferably from 630 ° C to 750 ° C, more preferably from 630 ° C to 720 ° C, further preferably from 630 ° C to 680 ° C, and most preferably from 630 ° C to 650 ° C. Below this range, the hydrogen yield may be reduced. The upper limit is not particularly limited, but since a sufficient yield can be obtained within this range, the technical significance of exceeding this range is reduced. Therefore, 750 ° C. may be considered as the upper limit substantially. The pressure in the system is preferably 0.1 kg / cm ² , G (gauge pressure) to 9.8 kg / cm ² , G or less, more preferably 0.1 kg / cm ² , G to 5 kg / cm ² , G or less, 0.2 kg / cm ^{2 to} 5 kg / cm ² and G to most is most preferable. When the pressure range is less than a predetermined value, the hydrogen production amount may be limited. When the pressure range is exceeded, the equipment cost may increase.

(Supplying vegetable oil in nickel-based catalysts)
Regarding the supply amount relative to the catalyst weight, the supply amount of vegetable oil is preferably 1.6 × 10 ⁻² C-mol / h or more and 3 × 10 ⁻² C-mol / h or less on a carbon basis with respect to 1 g of the catalyst weight in the case of nickel catalyst, More preferably × 10 ^-2 C-mol / h or more and 3 × 10 ^-2 C-mol / h or less, and most preferably 2.0 × 10 ^-2 C-mol / h or more and 2.4 × 10 ^-2 C-mol / h or less . Process operation is possible even below this range, but the amount of hydrogen production decreases. If this range is exceeded, there is a possibility that the reforming may not be carried out sufficiently, and there is a tendency that the technical superiority is diluted. In particular, when the range is greatly exceeded, liquid components (modified oils and fats) have the ability to reach the downstream side due to insufficient modification, which is not preferable.

(Supplying modifier for nickel catalyst)
Water vapor and oxygen-containing gas or pure oxygen used as a modifier is defined as a ratio to the amount of C-mol of vegetable oil supplied. The ratio (S / C ratio) between the mol amount of water vapor (S) and the C-mol amount (C) of vegetable oil is preferably 2 or more and 2.9 or less, more preferably 2.5 or more and 2.9 or less. The ratio (O / C ratio) between the O-mol amount in oxygen-containing gas or pure oxygen (O-converted value instead of O ₂ ) and the C-mol amount (C) of vegetable oil is preferably 0.5 or more and 0.85 or less, 0.6 It is more preferably 0.85 or less, and most preferably 0.6 or more and 0.8 or less. If it is less than this range, there is a tendency for the modification of the vegetable oil to be insufficient and a tendency for carbon deposition to occur, which is not preferable. When this range is exceeded, there is no problem in the operation of the process, but it is not preferable because the hydrogen yield may be reduced.

(Supplying vegetable oil in ruthenium-based catalysts)
Regarding the supply amount relative to the catalyst weight, the supply amount of vegetable oil is preferably 5.3 × 10 ⁻² C-mol / h or more and 0.4 C-mol / h or less on a carbon basis with respect to 1 g of catalyst weight in the case of a ruthenium catalyst, and 5.3 × 10 ⁻² C-mol / h or more and 0.36 C-mol / h or less is more preferable, and 8.3 × 10 ⁻² C-mol / h or more and 0.36 C-mol / h or less is most preferable. Although the process operation can be carried out even below this range, the basic unit for hydrogen production may be high. If this range is exceeded, reforming may not be performed sufficiently.

(Supplying modifier for ruthenium catalyst)
Water vapor and oxygen-containing gas or pure oxygen used as a modifier is defined as a ratio to the amount of C-mol of vegetable oil supplied. About the ratio (S / C ratio) of mol amount (S) of water vapor and C-mol amount (C) of vegetable oil, 1.0 or more and 2.0 or less are preferable, 1.2 or more and 1.9 or less are more preferable, 1.3 or more and 1.9 or less are more preferable, 1.3 to 1.5 is most preferable. About ratio (O / C ratio) of O-mol amount in oxygen-containing gas or pure oxygen and C-mol amount (C) of vegetable oil is preferably 0.5 or more and 0.85 or less, more preferably 0.6 or more and 0.83 or less, and more than 0.6 Most preferred is 0.8 or less. If it is less than this range, there is a tendency for the modification of the vegetable oil to be insufficient and a tendency for carbon deposition to occur, which is not preferable. When this range is exceeded, there is no problem in the operation of the process, but it is not preferable because the hydrogen yield may be reduced.

(Example)
Examples are given below to specifically disclose embodiments of the present invention. This is to make the description of the present invention easier to understand and is not intended to limit the scope.

Example 1
(Carrier preparation process)
(Mixing of carrier components)
In advance, 3.8 g of magnesium oxide (MgO) cooled to 40 ° C. or lower after weighing at 680 ° C. for 3 hours was weighed. Separately, 0.19 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with MgO (3.8 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar.

(Compression molding and sheaving)
5 wt.% Of stearic acid was added to the carrier precursor mixture thus obtained, mixed for 30 minutes in an automatic mortar, a portion was filled in a cylinder with a diameter of 16 mm, pressed at 1.5 ton / cm ² and held for 5 minutes. Then, the pressure was released to obtain a cylindrical shaped body. The columnar shaped body was pulverized. The crushed material was passed through a sieve with an aperture of 2.80 mm and a wire diameter of 1.12 mm, and did not pass through a sieve with an aperture of 1.40 mm and a wire diameter of 0.71 mm, using a sieve of JIS Z 8801. A range of particles was removed and sieved.

(Carrier firing)
The sieved particles were transferred to a porcelain dish and baked in air at 680 ° C. for 3 hours using a muffle furnace (FO300 type, manufactured by Yamato Kagaku). The obtained support had a specific surface area of 180 m ² / g and a pore volume of 0.21 mL / g.

(Active metal loading process)
Pure water was added to nickel (II) acetate tetrahydrate (special reagent grade, manufactured by Kanto Chemical Co., Ltd.) to prepare an aqueous solution having a concentration of 212 g / L. 20 mL of nickel acetate aqueous solution was added to 19.0 g of this carrier and stirred, and then transferred to a rotary evaporator to remove moisture at 60 ° C. under reduced pressure.

(Catalyst heat stabilization process)
The catalyst precursor thus obtained was calcined in air at 600 ° C. for 3 hours using a muffle furnace, the nickel content was converted to metal, the catalyst weight was 5.0 wt.%, The magnesium content was converted to metal oxide, and the catalyst weight was 20.0 wt. The catalyst 101 which consists of 0.1%, boron content in terms of sodium tetraborate decahydrate, 1.0 wt.% Based on the catalyst weight, and the balance aluminum oxide was obtained.

(Catalyst filling and activation)
5.0 g of catalyst 101 was weighed and filled into a 10 mL graduated cylinder to determine the bulk density (ABD (C)). The ABD (C) at this time was 1.17. The catalyst was diluted by adding the same amount of silica-alumina (ABD (D) 0.94). At this time, ABD (D) / ABD (C) was 0.8. The diluted catalyst was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while passing hydrogen at 100 mL / min (STP: standard state conversion).

(Modification of used cooking oil)
It switched to argon, heated up to 680 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. 0.08C-mol / h (1.6 × 10 ^-2 C-mol per 1g of catalyst) assuming vegetable oil (Nisshin Salad Oil, made by Nisshin Oillio) for cooking (hereinafter used vegetable oil) is regarded as soybean oil / h), S / C ratio was 2.0, and O / C ratio was 0.5. The reaction temperature increased by 70 ° C to 750 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure).

(Product gas composition and conversion)
The typical composition of the product gas obtained under these conditions was 60.2% hydrogen, 22.5% carbon monoxide, 13.5% carbon dioxide, 3.2% methane, and 0.6% hydrocarbons with 2 or more carbons (C2 ₊ ). . The product gas composition is expressed as mol% excluding water (water vapor), nitrogen and unburned oxygen. The same applies to the embodiments described below. The gasification conversion rate defined by Equation 1 was 90.2% at the first hour and 91.5% at the sixth hour, and the overall evaluation was appropriate.

Formula 1

(Example 2)
After calcining at 680 ° C. for 3 hours in advance, 3.2 g of calcium oxide (CaO) cooled to 40 ° C. or lower was weighed. Separately, 0.45 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with CaO (3.2 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 7 wt.% Tartaric acid was added based on the total weight of the carrier precursor mixture thus obtained, mixed in an automatic mortar for 30 minutes, and then compression molded and sieved by the method described in Example 1.

The sieved particles were transferred to a porcelain dish and baked in air at 600 ° C. for 5 hours using a muffle furnace. The obtained support had a specific surface area of 200 m ² / g and a pore volume of 0.23 mL / g. Pure water was added to nickel (II) acetate tetrahydrate to prepare an aqueous solution having a concentration of 212 g / L. 40 mL of nickel acetate aqueous solution was added to 18.0 g of this carrier and stirred, and then transferred to a rotary evaporator to remove moisture at 60 ° C. under reduced pressure. The catalyst precursor thus obtained was calcined in a muffle furnace in air at 680 ° C. for 3 hours to convert the nickel content into metal, catalyst weight basis 10.0 wt.%, Calcium content into metal oxide, catalyst weight basis 18.0 wt.% Then, a catalyst 102 comprising a boron content in terms of sodium tetraborate decahydrate, 2.5 wt.% Based on the catalyst weight, and the remaining aluminum oxide was obtained.

5.0 g of catalyst 102 was weighed and filled into a 10 mL graduated cylinder to determine the bulk density (ABD (C)). The ABD (C) at this time was 1.02. The catalyst was diluted by adding the same amount of alumina (ABD (D) 1.1). The ABD (D) / ABD (C) at this time was 1.08. The diluted catalyst was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while passing hydrogen at 100 mL / min (STP: standard state conversion).

The temperature was raised to 640 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. Assuming that used vegetable oil is soybean oil, 0.1C-mol / h (2.0 × 10 ^-2 C-mol / h per 1g of catalyst), S / C ratio of 2.0, O / C ratio of 0.6 introduced on the catalyst bed did. The reaction temperature increased by 80 ° C to 720 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.5% hydrogen, 19.9% carbon monoxide, 14.5% carbon dioxide, 3.5% methane, and 0.6% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 90.8% at the first hour and 91.3% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 3)
2.64 g of barium oxide (BaO) cooled to 40 ° C. or lower after weighing at 680 ° C. for 3 hours in advance was weighed. Separately, 0.53 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with BaO (2.64 g) in an automatic mortar for 30 minutes. A predetermined amount of γ-alumina powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 1 wt.% Of polyvinyl alcohol (PVA) powder was added based on the total weight of the carrier precursor mixture thus obtained, mixed in an automatic mortar for 30 minutes, and then compression molded and sieved by the method described in Example 1.

The sieved particles were transferred to a porcelain dish and baked in air at 650 ° C. for 6 hours using a muffle furnace. The obtained support had a specific surface area of 240 m ² / g and a pore volume of 0.25 mL / g. Pure water was added to nickel (II) nitrate hexahydrate to prepare an aqueous solution with a concentration of 595 g / L. 20 mL of nickel nitrate aqueous solution was added to 17.6 g of this carrier and stirred, and then transferred to a rotary evaporator to remove water at 60 ° C. under reduced pressure. The catalyst precursor thus obtained was calcined in air at 650 ° C. for 6 hours in a muffle furnace, the nickel content was converted to metal, the catalyst weight was 12.0 wt.%, The barium content was converted to metal oxide, and the catalyst weight was 15.0 wt.%. Then, a catalyst 103 was obtained comprising the boron content in terms of sodium tetraborate decahydrate, 3.0 wt.% Based on the catalyst weight, and the balance aluminum oxide.

5.0 g of catalyst 103 was weighed and filled into a 10 mL graduated cylinder to determine the bulk density (ABD (C)). The ABD (C) at this time was 1.1. The catalyst was diluted by adding the same amount of alumina (ABD (D) 1.02). At this time, ABD (D) / ABD (C) was 0.93. The diluted catalyst was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while passing hydrogen at 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 605 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Assuming used vegetable oil as soybean oil, 0.12 C-mol / h (2.4 × 10 ^-2 C-mol / h per 1 g of catalyst), S / C ratio of 2.5, and O / C ratio of 0.7 introduced on the catalyst bed did. The reaction temperature increased by 75 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.8% hydrogen, 19.5% carbon monoxide, 15.3% carbon dioxide, 3.6% methane, and C ₂₊ 0.8%. Moreover, the gasification conversion rate defined by Formula 1 was 92.1% at the first hour and 91.8% at the sixth hour, and the comprehensive evaluation was appropriate.

Example 4
In advance, after calcination at 680 ° C. for 3 hours, 2.55 g of magnesium oxide (MgO) cooled to 40 ° C. or less was weighed. Separately, 0.85 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with MgO (2.55 g) in an automatic mortar for 30 minutes. A predetermined amount of γ-alumina powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 10 wt.% Of carboxymethyl cellulose (CMC) powder was added based on the total weight of the carrier precursor mixture thus obtained, mixed for 30 minutes in an automatic mortar, and then compression molded and sieved by the method described in Example 1.

The sieved particles were transferred to a porcelain dish and baked in air at 680 ° C. for 12 hours using a muffle furnace. The obtained support had a specific surface area of 220 m ² / g and a pore volume of 0.24 L / g. Pure water was added to nickel (II) chloride hexahydrate to prepare an aqueous solution with a concentration of 608 g / L. After adding 20.0 mL of nickel chloride aqueous solution to 17.0 g of this carrier and stirring, it was transferred to a rotary evaporator to remove water at 60 ° C. under reduced pressure. The catalyst precursor thus obtained was calcined in air at 680 ° C. for 12 hours in a muffle furnace, the nickel content was converted to metal, the catalyst weight was 15.0 wt.%, The magnesium content was converted to metal oxide, and the catalyst weight was 15.0 wt.%. Then, a catalyst 104 comprising a boron content in terms of sodium tetraborate decahydrate, 5.0 wt.% Based on the catalyst weight, and the balance aluminum oxide was obtained.

5.0 g of the catalyst 104 was weighed and filled into a 10 mL graduated cylinder to determine the bulk density (ABD (C)). The ABD (C) at this time was 1.3. The catalyst was diluted by adding the same amount of alumina (ABD (D) 1.56). At this time, ABD (D) / ABD (C) was 1.2. The diluted catalyst was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while passing hydrogen at 100 mL / min (STP: standard state conversion).

The temperature was raised to 590 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the temperature was maintained. Assuming used vegetable oil as soybean oil, 0.12 C-mol / h (2.4 × 10 ^-2 C-mol / h per 1 g of catalyst), S / C ratio of 2.9, O / C ratio of 0.85 introduced on the catalyst bed did. The reaction temperature increased by 60 ° C to 650 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.5% hydrogen, 18.3% carbon monoxide, 16.0% carbon dioxide, 3.5% methane, and 1.7% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 93.5% in the first hour and 92.2% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 5)
In advance, after firing at 680 ° C. for 3 hours, 1.92 g of calcium oxide (CaO) cooled to 40 ° C. or less was weighed. Separately, 0.8 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with CaO (1.92 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 3 wt.% Of a powder having a weight ratio of tartaric acid and stearic acid of 1: 2 based on the total weight of the carrier precursor mixture thus obtained was added and mixed for 30 minutes in an automatic mortar, followed by compression molding by the method described in Example 1. Sieving was performed.

The sieved particles were transferred to a porcelain dish and baked in air at 680 ° C. for 24 hours using a muffle furnace. The obtained support had a specific surface area of 280 m ² / g and a pore volume of 0.31 L / g. Pure water was added to nickel (II) nitrate hexahydrate to prepare an aqueous solution with a concentration of 850 g / L. After adding 20.0 mL of nickel nitrate aqueous solution to 16.0 g of this carrier and stirring, it was transferred to a rotary evaporator to remove water at 60 ° C. under reduced pressure. The catalyst precursor thus obtained was calcined in air at 670 ° C. for 24 hours in a muffle furnace, the nickel content was converted to metal, the catalyst weight was 20.0 wt.%, The calcium content was converted to metal oxide, and the catalyst weight was 12.0 wt.%. Then, a catalyst 105 consisting of sodium tetraborate · decahydrate in terms of boron content, 5.0 wt.% Based on the catalyst weight and the balance aluminum oxide was obtained.

5.0 g of the catalyst 105 was weighed and filled into a 10 mL graduated cylinder to determine the bulk density (ABD (C)). The ABD (C) at this time was 1.2. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.15. The diluted catalyst was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while passing hydrogen at 100 mL / min (STP: standard state conversion).

The temperature was raised to 580 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the temperature was maintained. Assuming used vegetable oil as soybean oil, 0.15 C-mol / h (3.0 x 10 ^-2 C-mol / h per gram of catalyst), S / C ratio of 2.9, O / C ratio of 0.8, introduced onto the catalyst bed did. The reaction temperature increased by 50 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.3% hydrogen, 18.3% carbon monoxide, 15.8% carbon dioxide, 4.2% methane, and 0.4% C ₂₊ . The gasification conversion rate defined by Equation 1 was 91.3% at the first hour and 90.5% at the sixth hour, and the overall evaluation was appropriate.

(Example 6)
In advance, after calcination at 680 ° C. for 3 hours, 3.88 g of magnesium oxide (MgO) cooled to 40 ° C. or less was weighed. Separately, 0.19 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with MgO (3.88 g) in an automatic mortar for 30 minutes. A predetermined amount of γ-alumina powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 7 wt.% Of a powder having a 1: 1 weight ratio of stearic acid and polyvinyl alcohol based on the total weight of the carrier precursor mixture thus obtained was added, mixed for 30 minutes in an automatic mortar, and then compression molded by the method described in Example 1. And sieved.

The sieved particles were transferred to a porcelain dish and baked in air at 680 ° C. for 3 hours using a muffle furnace. The obtained support had a specific surface area of 180 m ² / g and a pore volume of 0.21 L / g. Ruthenium chloride n-hydrate (n = 1, Ru content 39%) was added pure water to prepare a 77 g / L aqueous solution. 20 mL of ruthenium chloride aqueous solution was added to 19.4 g of this carrier and stirred. After that, it was transferred to a rotary evaporator and the internal pressure was measured with a U-shaped mercury manometer under reduced pressure, and water was removed at 60 ° C. until the internal pressure reached about 50 mmHg. Catalyst 206 consisting of wt.%, magnesium content in terms of metal oxide, catalyst weight basis 20.0 wt.%, boron content in terms of sodium tetraborate decahydrate, catalyst weight basis 1.0 wt.%, and the balance aluminum oxide 206 Got.

5.0 g of catalyst 206 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.62. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At that time, ABD (D) / ABD (C) was 0.85. A catalyst diluted to contain 1.5 g of catalyst 206 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 670 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Assuming that the used vegetable oil is soybean oil, 8.0 × 10 ^-2 C-mol / h (5.3 × 10 ^-2 C-mol / h per gram of catalyst, S / C ratio 1.0, O / C ratio 0.5) The reaction temperature was increased by 80 ° C. to 750 ° C. The pressure inside the reactor was kept at 0.2 kg / cm ² and G (gauge pressure), and the typical composition of the product gas obtained under these conditions Was 60.1% hydrogen, 17.5% carbon monoxide, 16.1% carbon dioxide, 4.5% methane, and 1.8% C ₂₊ , and the gasification conversion rate defined by Equation 1 was 99.5% for the first hour, 6 hours. An overall rating of 99.4% was appropriate.

(Example 7)
In advance, after baking at 680 ° C. for 3 hours, 2.33 g of calcium oxide (CaO) cooled to 40 ° C. or less was weighed. Separately, 0.54 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with CaO (2.33 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 5 wt.% Tartaric acid was added based on the total weight of the carrier precursor mixture thus obtained, mixed in an automatic mortar for 30 minutes, and then compression molded and sieved by the method described in Example 1.

The sieved particles were transferred to a porcelain dish and baked in air at 650 ° C. for 24 hours using a muffle furnace. The obtained support had a specific surface area of 280 m ² / g and a pore volume of 0.31 L / g. Ruthenium chloride n-hydrate (n = 1, Ru content 39%) was added pure water to prepare a 77 g / L aqueous solution. 20 mL of ruthenium chloride aqueous solution was added to 19.4 g of this carrier and stirred. After that, it was transferred to a rotary evaporator and the internal pressure was measured with a U-shaped mercury manometer under reduced pressure, and water was removed at 60 ° C. until the internal pressure reached about 50 mmHg. Catalyst 207 consisting of wt.%, calcium content in terms of metal oxide, catalyst weight basis 12.0 wt.%, boron content in terms of sodium tetraborate decahydrate, catalyst weight basis 2.8 wt.%, and the balance aluminum oxide 207 Got.

5.0 g of catalyst 207 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.2. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.15. A catalyst diluted to contain 1.2 g of catalyst 207 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 660 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Assuming that used vegetable oil is soybean oil, 0.1 C-mol / h (8.3 × 10 ^-2 C-mol / h per gram of catalyst, S / C ratio of 1.2, O / C ratio of 0.6 was introduced onto the catalyst bed. The reaction temperature increased by 60 ° C. to 720 ° C. The reactor internal pressure was maintained at 0.2 kg / cm ² and G (gauge pressure), and the typical composition of the product gas obtained under these conditions was 61.2% hydrogen. , Carbon monoxide 17.3%, carbon dioxide 16.2%, methane 4.2%, and C ₂₊ 1.1%, and the gasification conversion rate defined by Equation 1 is 99.2% in the first hour and 98.8% in the sixth hour. The overall evaluation was good.

(Example 8)
2.88 g of barium oxide (BaO) cooled to 40 ° C. or lower after weighing at 680 ° C. for 3 hours in advance was weighed. Separately, 0.58 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with BaO (2.88 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 10 wt.% Of a powder having a weight ratio of 1: 1: 1 of tartaric acid, stearic acid and polyvinyl alcohol based on the total weight of the carrier precursor mixture thus obtained was added and mixed in an automatic mortar for 30 minutes. Compression molding and sieving were performed by the method.

The sieved particles were transferred to a porcelain dish and baked in air at 600 ° C. for 12 hours using a muffle furnace. The obtained support had a specific surface area of 240 m ² / g and a pore volume of 0.25 mL / g. Ruthenium chloride n-hydrate (n = 1, Ru content (assay) 39% pure water was added to prepare 103 g / L aqueous solution. 19.2 mL of ruthenium chloride aqueous solution was added to 19.2 g of this carrier. After stirring, transfer to a rotary evaporator, measure the internal pressure with a U-shaped mercury manometer under reduced pressure, and remove water at 60 ° C until the internal pressure reaches about 50 mmHg. A catalyst consisting of 4.0 wt.%, Barium content in terms of metal oxide, catalyst weight basis 15.0 wt.%, Boron content in terms of sodium tetraborate / decahydrate, catalyst weight basis 3.0 wt.%, And the balance aluminum oxide Obtained 208.

5.0 g of the catalyst 208 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.15. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 1.2. The catalyst diluted to contain 1.0 g of catalyst 208 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. Spent vegetable oil was regarded as soybean oil and introduced onto the catalyst bed under the conditions of 0.12 C-mol / h (0.12 C-mol / h per gram of catalyst), S / C ratio of 1.3, and O / C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.7% hydrogen, 16.6% carbon monoxide, 16.3% carbon dioxide, 4.2% methane, and 1.2% C ₂₊ . The gasification conversion rate defined by Equation 1 was 98.1% at the first hour and 99.3% at the sixth hour, and the overall evaluation was appropriate.

Example 9
2.72 g of magnesium oxide (MgO) cooled in advance to 40 ° C. or lower after weighing at 680 ° C. for 3 hours in advance was weighed. Separately, 0.97 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with MgO (2.72 g) in an automatic mortar for 30 minutes. A predetermined amount of γ-alumina powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. After adding 7 wt.% Of a powder having a weight ratio of tartaric acid and stearic acid of 1: 3 based on the total weight of the carrier precursor mixture thus obtained, mixing in an automatic mortar for 30 minutes, compression molding and sieving by the method described in Example 1 Divided.

The sieved particles were transferred to a porcelain dish and baked in air at 650 ° C. for 6 hours using a muffle furnace. The obtained support had a specific surface area of 220 m ² / g and a pore volume of 0.24 mL / g. Ruthenium chloride n-hydrate (n = 1, Ru content 39%) was added pure water to prepare a 77 g / L aqueous solution. 20 mL of ruthenium chloride aqueous solution was added to 19.4 g of this carrier and stirred. After that, it was transferred to a rotary evaporator and the internal pressure was measured with a U-shaped mercury manometer under reduced pressure, and water was removed at 60 ° C. until the internal pressure reached about 50 mmHg. Catalyst 209 consisting of wt.%, magnesium content in terms of metal oxide, catalyst weight basis 14.0 wt.%, boron content in terms of sodium tetraborate decahydrate, catalyst weight basis 5.0 wt.%, and the balance aluminum oxide 209 Got.

5.0 g of catalyst 209 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.28. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.08. A catalyst diluted to contain 0.8 g of catalyst 209 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 590 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the temperature was maintained. Spent vegetable oil was regarded as soybean oil and introduced onto the catalyst bed under the conditions of 0.15 C-mol / h (0.188 C-mol / h per 1 g of catalyst), S / C ratio of 1.5, and O / C ratio of 0.83. The reaction temperature increased by 60 ° C to 650 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 62.5% hydrogen, 15.5% carbon monoxide, 16.3% carbon dioxide, 4.1% methane, and 1.6% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 98.5% in the first hour and 99.1% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 10)
Calcium oxide (CaO) cooled to 40 ° C. or lower after calcination at 680 ° C. for 3 hours in advance was weighed. Separately, 0.48 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with CaO (3.8 g) in an automatic mortar for 30 minutes. A predetermined amount of aluminum hydroxide powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 7 wt.% Of a powder having a 1: 1 weight ratio of polyvinyl alcohol and carboxymethylcellulose based on the total weight of the carrier precursor mixture thus obtained was added, mixed in an automatic mortar for 30 minutes, and then compressed by the method described in Example 1. Molding and sieving were performed.

The sieved particles were transferred to a porcelain dish and baked in air at 630 ° C. for 4 hours using a muffle furnace. The obtained support had a specific surface area of 180 m ² / g and a pore volume of 0.21 mL / g. Ruthenium chloride n-hydrate (n = 1, Ru content (assay) 39% pure water was added to prepare a 128 g / L aqueous solution. 20 mL of ruthenium chloride aqueous solution was added to 19 g of this carrier and stirred. , Moved to a rotary evaporator, and under reduced pressure, the internal pressure was measured with a U-shaped mercury manometer, and water was removed at 60 ° C. until the internal pressure reached about 50 mmHg. Catalyst 210 consisting of.%, Calcium content in terms of metal oxide, 20.0 wt.% Based on catalyst weight, boron content in terms of sodium tetraborate / decahydrate, 2.5 wt.% Based on catalyst weight, and the balance aluminum oxide Obtained.

5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 0.5 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Spent vegetable oil was regarded as soybean oil and introduced onto the catalyst bed under the conditions of 0.2 C-mol / h (0.4 C-mol / h per 1 g of catalyst), S / C ratio of 1.9 and O / C ratio of 0.85. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 63.5% hydrogen, 15.3% carbon monoxide, 15.9% carbon dioxide, 4.5% methane, and C ₂₊ 0.8%. The gasification conversion rate defined by Equation 1 was 93.6% in the first hour and 93.1% in the sixth hour, and the overall evaluation was appropriate.

(Example 11)
In advance, after baking at 680 ° C. for 3 hours, 3.33 g of barium oxide (BaO) cooled to 40 ° C. or less was weighed. Separately, 0.93 g of sodium tetraborate decahydrate (Na ₂ B ₄ O ₇ .10H ₂ O) was weighed and mixed with BaO (3.33 g) in an automatic mortar for 30 minutes. A predetermined amount of γ-alumina powder was added to the resulting mixture and further mixed for 30 minutes in an automatic mortar. 3 wt.% Of a powder having a weight ratio of tartaric acid and carboxymethylcellulose of 2: 5 based on the total weight of the carrier precursor mixture thus obtained was added, mixed in an automatic mortar for 30 minutes, and then compression molded by the method described in Example 1. And sieved.

The sieved particles were transferred to a porcelain dish and baked in air at 680 ° C. for 3 hours using a muffle furnace. The obtained support had a specific surface area of 200 m ² / g and a pore volume of 0.23 mL / g. Ruthenium chloride n-hydrate (n = 1, Ru content 39%) was added pure water to prepare an aqueous solution with a concentration of 192 g / L. 20 mL of ruthenium chloride aqueous solution was added to 18.5 g of this carrier and stirred. After that, it was transferred to a rotary evaporator, the internal pressure was measured with a U-shaped mercury manometer under reduced pressure, and water was removed at 60 ° C. until the internal pressure reached about 50 mmHg. Catalyst 211 consisting of wt.%, barium content in terms of metal oxide, catalyst weight basis 18.0 wt.%, boron content in terms of sodium tetraborate decahydrate, catalyst weight basis 5.0 wt.%, and the balance aluminum oxide 211 Got.

5.0 g of catalyst 211 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.725. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 0.8. The catalyst diluted to contain 0.7 g of the catalyst 211 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating hydrogen at 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Spent vegetable oil was regarded as soybean oil and introduced onto the catalyst bed under the conditions of 0.25 C-mol / h (0.357 C-mol / h per 1 g of catalyst), S / C ratio of 2.0, and O / C ratio of 0.8. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 63.1% hydrogen, 15.8% carbon monoxide, 15.8% carbon dioxide, 4.3% methane, and C ₂₊ 1.0%. Moreover, the gasification conversion rate defined by Formula 1 was 94.2% at the first hour and 93.6% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 101)
5.0 g of catalyst 206 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.62. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At that time, ABD (D) / ABD (C) was 0.85. A catalyst diluted to contain 1.5 g of catalyst 206 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 670 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. 8.0 × 10 ^-2 C-mol / h (5.3 × 10 ^-2 C-mol / h per 1 g of catalyst, S) mixed oil of used vegetable oil and JIS No. 1 kerosene in volume ratio of 0.11 (1 volume of vegetable oil, 9 volumes of kerosene) The catalyst was introduced onto the catalyst bed under the conditions of 1.0 / C ratio and 0.5 O / C ratio, the reaction temperature increased by 80 ° C. to 750 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.2% hydrogen, 18.1% carbon monoxide, 16.7% carbon dioxide, 4.7% methane, and 0.3% C ₂₊ , defined by Equation 1. The gasification conversion rate was 99.5% in the first hour and 99.4% in the sixth hour, and the overall evaluation was appropriate.

(Example 102)
5.0 g of catalyst 207 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.2. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.15. A catalyst diluted to contain 1.2 g of catalyst 207 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 660 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. 0.1 C-mol / h (8.3 x 10 ^-2 C-mol / h per 1 g of catalyst, S / C ratio of 1.2) mixed oil of used vegetable oil and JIS No. 1 kerosene volume ratio of 0.25 (2 volumes of vegetable oil, 8 volumes of kerosene) The reaction temperature was increased by 60 ° C. to reach 720 ° C. The reactor internal pressure was maintained at 0.2 kg / cm ² and G (gauge pressure) under the conditions of O / C ratio of 0.6. The typical composition of the resulting product gas was 60.0% hydrogen, 18.0% carbon monoxide, 16.8% carbon dioxide, 4.8% methane, and 0.4% C ₂₊ , and the gasification conversion defined by Equation 1. The rate was 99.2% at the first hour and 98.8% at the sixth hour, and the overall evaluation was appropriate.

(Example 103)
5.0 g of the catalyst 208 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.15. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 1.2. The catalyst diluted to contain 1.0 g of catalyst 208 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 C-mol / h (0.12 C-mol / h per gram of catalyst), S / C ratio of 1.3, O / O of mixed oil of used vegetable oil and JIS No. 1 kerosene volume ratio of 0.67 (4 volumes of vegetable oil, 6 volumes of kerosene) The catalyst was introduced onto the catalyst bed under the condition of a C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 62.1% hydrogen, 16.8% carbon monoxide, 16.1% carbon dioxide, 4.2% methane, and 0.8% C ₂₊ . The gasification conversion rate defined by Equation 1 was 98.1% at the first hour and 99.3% at the sixth hour, and the overall evaluation was appropriate.

(Example 104)
5.0 g of catalyst 209 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.28. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.08. A catalyst diluted to contain 0.8 g of catalyst 209 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 590 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the temperature was maintained. 0.15 C-mol / h (0.188 C-mol / h per 1 g of catalyst), S / C ratio 1.5, mixed oil of used vegetable oil and JIS 1 kerosene volume ratio 1 (equal volume mixed oil of vegetable oil and kerosene) The catalyst was introduced on the catalyst bed under the condition of 0.83 / C ratio. The reaction temperature increased by 60 ° C to 650 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 62.0% hydrogen, 16.8% carbon monoxide, 16.3% carbon dioxide, 4.1% methane, and C ₂₊ 0.8%. Moreover, the gasification conversion rate defined by Formula 1 was 98.5% in the first hour and 99.1% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 105)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 0.5 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Mixed oil of used vegetable oil and JIS No.1 kerosene volume ratio 1.5 (vegetable oil 6 volume, kerosene 4 volume) 0.2 C-mol / h (0.4 C-mol / h per 1 g of catalyst), S / C ratio 1.9, O / C The catalyst was introduced on the catalyst bed at a ratio of 0.85. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.9% hydrogen, 16.6% carbon monoxide, 16.2% carbon dioxide, 4.4% methane, and 0.9% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 96.0% in the first hour and 93.1% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 106)
5.0 g of catalyst 211 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.725. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 0.8. The catalyst diluted to contain 0.7 g of the catalyst 211 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating hydrogen at 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Mixed oil of used vegetable oil and JIS No. 1 kerosene volume ratio 2.33 (vegetable oil 7 volume, kerosene 3 volume) 0.25 C-mol / h (0.357 C-mol / h per 1 g of catalyst), S / C ratio 2.0, O / C It was introduced onto the catalyst bed at a ratio of 0.8. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.4% hydrogen, 17.9% carbon monoxide, 16.8% carbon dioxide, 4.3% methane, and 0.6% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 96.1% in the first hour and 93.6% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 107)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 1.0 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating 100 mL / min (STP: standard state conversion) of hydrogen.

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 C-mol / h (0.12 C-mol / h per gram of catalyst), S / C ratio of 1.3, O / The catalyst was introduced onto the catalyst bed under the condition of a C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.3% hydrogen, 17.3% carbon monoxide, 16.5% carbon dioxide, 4.2% methane, and 0.7% C2 ₊ . Moreover, the gasification conversion rate defined by Formula 1 was 92.5% at the first hour and 92.1% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 108)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 1.0 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating 100 mL / min (STP: standard state conversion) of hydrogen.

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 C-mol / h (0.12 C-mol / h per 1 g of catalyst), S / C ratio of 1.3, O / of mixed oil of used vegetable oil and JIS No. 1 kerosene volume ratio 19 (95 volumes of vegetable oil, 5 volumes of kerosene) The catalyst was introduced onto the catalyst bed under the condition of a C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 63.4% hydrogen, 15.3% carbon monoxide, 15.9% carbon dioxide, 4.5% methane, and C ₂₊ 0.9%. The gasification conversion rate defined by Equation 1 was 91.3% at the first hour and 90.5% at the sixth hour, and the overall evaluation was appropriate.

(Example 201)
5.0 g of catalyst 206 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.62. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At that time, ABD (D) / ABD (C) was 0.85. A catalyst diluted to contain 1.5 g of catalyst 206 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 670 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. 8.0 × 10 ^-2 C-mol / h (catalyst) of 0.11 volume ratio of used vegetable oil and decahydronaphthalene (decalin (Tokyo Chemical Industry Co., Ltd., reagent grade 1)) volume ratio 0.11 (1 vegetable oil, 9 decalin) It was introduced onto the catalyst bed under the conditions of 5.3 × 10 ^-2 C-mol / h, S / C ratio of 1.0, and O / C ratio of 0.5 per gram, the reaction temperature increased by 80 ° C to 750 ° C. 0.2 kg / cm ² , kept at G (gauge pressure) The typical composition of the product gas obtained under these conditions is 63.4% hydrogen, 18.1% carbon monoxide, 15.8% carbon dioxide, 2.6% methane, and C _The gasification conversion rate defined by Formula 1 was 98.5% at the first hour and 99.2% at the sixth hour, and the overall evaluation was appropriate.

(Example 202)
5.0 g of catalyst 207 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.2. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.15. A catalyst diluted to contain 1.2 g of catalyst 207 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 660 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. 0.1 C-mol / h (8.3 x 10 ^-2 C-mol / h per 1 g of catalyst, S / C ratio of 1.2, O) of mixed oil with a volume ratio of used vegetable oil and decalin of 0.25 (2 volumes of vegetable oil, 8 volumes of decalin) The reaction temperature was increased by 60 ° C. to reach 720 ° C. The reactor internal pressure was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas was 63.1% hydrogen, 18.1% carbon monoxide, 16.0% carbon dioxide, 2.6% methane, and 0.2% C ₂₊ , and the gasification conversion rate defined by Equation 1 is It was 99.2% at the first hour and 98.9% at the sixth hour.

(Example 203)
5.0 g of the catalyst 208 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.15. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 1.2. The catalyst diluted to contain 1.0 g of catalyst 208 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 C-mol / h (0.12 C-mol / h per 1 g of catalyst), S / C ratio 1.3, O / C ratio of mixed oil of used vegetable oil and decalin in volume ratio of 0.67 (4 volumes of vegetable oil, 6 volumes of decalin) It was introduced onto the catalyst bed at a condition of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of product gas obtained under these conditions was 62.6% hydrogen, 18.0% carbon monoxide, 16.2% carbon dioxide, 2.8% methane, and 0.4% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 98.7% at the first hour and 98.5% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 204)
5.0 g of catalyst 209 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.28. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 1.08. A catalyst diluted to contain 0.8 g of catalyst 209 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

The temperature was raised to 590 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the temperature was maintained. 0.15 C-mol / h (0.188 C-mol / h per 1 g of catalyst), S / C ratio 1.5, O / C mixed oil with a volume ratio of 1 used vegetable oil and decalin (equal volume mixed oil of vegetable oil and decalin) The catalyst was introduced onto the catalyst bed at a ratio of 0.83. The reaction temperature increased by 60 ° C to 650 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.9% hydrogen, 16.8% carbon monoxide, 16.4% carbon dioxide, 4.3% methane, and 0.6% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 96.7% at the first hour and 96.5% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 205)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 0.5 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while venting 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Mixed oil with a volume ratio of used vegetable oil to decalin of 1.5 (6 volumes of vegetable oil, 4 volumes of decalin) 0.2 C-mol / h (0.4 C-mol / h per 1 g of catalyst), S / C ratio 1.9, O / C ratio 0.85 Was introduced onto the catalyst bed under the following conditions. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 61.4% hydrogen, 17.3% carbon monoxide, 16.6% carbon dioxide, 4.1% methane, and 0.6% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 97.0% at the first hour and 95.3% at the sixth hour, and the comprehensive evaluation was appropriate.

Example 206
5.0 g of catalyst 211 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.725. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). At this time, ABD (D) / ABD (C) was 0.8. The catalyst diluted to contain 0.7 g of the catalyst 211 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating hydrogen at 100 mL / min (STP: standard state conversion).

It switched to argon, heated up to 570 degreeC, venting at 20 mL / min (STP), and hold | maintained at the same temperature. Mixed oil 0.25 C-mol / h (0.357 C-mol / h per 1 g of catalyst), S / C ratio 2.0, O / C ratio 0.8, used oil / decalin volume ratio 2.33 (7 parts vegetable oil, 3 parts decalin) Was introduced onto the catalyst bed under the following conditions. The reaction temperature increased by 60 ° C to 630 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 63.4% hydrogen, 15.3% carbon monoxide, 15.9% carbon dioxide, 4.6% methane, and 0.8% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 96.1% in the first hour and 93.6% in the sixth hour, and the comprehensive evaluation was appropriate.

(Example 207)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 1.0 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating 100 mL / min (STP: standard state conversion) of hydrogen.

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 mixed oil with a volume ratio of 4 used vegetable oil to decalin (8 volumes vegetable oil, 2 volumes decalin)
The catalyst was introduced onto the catalyst bed under the conditions of C-mol / h (0.12 C-mol / h per gram of catalyst), S / C ratio of 1.3, and O / C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.8% hydrogen, 18.5% carbon monoxide, 15.3% carbon dioxide, 3.6% methane, and 1.8% C ₂₊ . Moreover, the gasification conversion rate defined by Formula 1 was 92.7% at the first hour and 92.1% at the sixth hour, and the comprehensive evaluation was appropriate.

(Example 208)
5.0 g of catalyst 210 was weighed and the bulk density (ABD (C)) was determined using a 10 ml graduated cylinder. The ABD (C) at this time was 1.5. The catalyst was diluted by adding the same amount of zeolite (ABD (D) 1.38). The ABD (D) / ABD (C) at this time was 0.92. A catalyst diluted to contain 1.0 g of catalyst 210 was attached to a fixed bed reactor, and reduced by heating at 500 ° C. for 30 minutes while ventilating 100 mL / min (STP: standard state conversion) of hydrogen.

The temperature was raised to 620 ° C. while aeration was performed at 20 mL / min (STP) by switching to argon, and the same temperature was maintained. 0.12 mixed oil of volume ratio 19 of used vegetable oil and decalin (95 volumes of vegetable oil, 5 volumes of decalin)
The catalyst was introduced onto the catalyst bed under the conditions of C-mol / h (0.12 C-mol / h per gram of catalyst), S / C ratio of 1.3, and O / C ratio of 0.7. The reaction temperature increased by 60 ° C to 680 ° C. The internal pressure of the reactor was maintained at 0.2 kg / cm ² and G (gauge pressure). The typical composition of the product gas obtained under these conditions was 60.5% hydrogen, 18.3% carbon monoxide, 16.0% carbon dioxide, 3.5% methane, and 1.7% C ₂₊ . The gasification conversion rate defined by Equation 1 was 92.5% at the first hour and 91.8% at the sixth hour, and the overall evaluation was appropriate.

Regarding the above examples, Examples 1 to 11 are shown in Table 1, Examples 101 to 108 are shown in Table 2, and Examples 201 to 208 are shown in Table 3.

The technology for obtaining hydrogen-containing gas from vegetable oils and the like according to the present invention is of increasing importance in the industry because it can minimize the economic burden on end users when using energy resources derived from biomass. Rise.

Claims (4)

Alkaline earth metal in terms of oxide, 12 wt.% To 20 wt.% Based on catalyst weight, boron in terms of sodium tetraborate decahydrate, 1.0 wt.% To 5.0 wt.% Based on catalyst weight, and The balance is made of aluminum oxide, and regarding the physical properties, the support having a specific surface area of 180 m ² / g or more and 280 m ² / g or less and a pore volume of 0.21 ml / g or more and 0.31 ml / g or less is coated with nickel as an active metal. in terms of metal, the catalyst weight 5.0 wt.% or more 20.0 wt.% to be that catalysts containing less, in a reactor pressure less 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G, reaction temperature 630 ° C. 750 ° C. or less, water vapor / carbon ratio of 2.0 or more and 2.9 or less, O / C ratio of 0.5 or more and 0.85 or less, and vegetable oil supply amount is 1.6 × 10 ⁻² C-mol / h or more and 3.0 × 10 ^{−2 for} 1.0 g of catalyst. A method for producing a hydrogen-containing gas, comprising contacting under conditions of C-mol / h or less. Alkaline earth metal in terms of oxide, 12 wt.% To 20 wt.% Based on catalyst weight, boron in terms of sodium tetraborate decahydrate, 1.0 wt.% To 5.0 wt.% Based on catalyst weight, and With respect to the physical properties, the balance is made of aluminum oxide and the specific surface area is 180 m ² / g to 280 m ² / g and the pore volume is 0.21 ml / g to 0.31 ml / g. terms of metal, to 3.0 wt.% or more 7.5 wt.% or less touching you-containing medium with a catalyst weight basis, the following reactor pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G, reaction temperature 630 ° C. or higher 750 ° C or less, water vapor / carbon ratio of 1.0 or more and 2.0 or less, O / C ratio of 0.5 or more and 0.85 or less, and vegetable oil supply rate of 5.3 × 10 ^-2 C-mol / h or more and 0.4C-mol / h for 1.0 g of catalyst A method for producing a hydrogen-containing gas, comprising contacting under the following conditions. Alkaline earth metal in terms of oxide, 12 wt.% To 20 wt.% Based on catalyst weight, boron in terms of sodium tetraborate decahydrate, 1.0 wt.% To 5.0 wt.% Based on catalyst weight, and With respect to the physical properties, the balance is made of aluminum oxide and the specific surface area is 180 m ² / g to 280 m ² / g and the pore volume is 0.21 ml / g to 0.31 ml / g. terms of metal, to 3.0 wt.% or more 7.5 wt.% or less touching you-containing medium in the catalyst weight, the reactor inner pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G reaction temperature at less 630 ° C. to 750 ℃ or less, steam / carbon ratio is 1.0 or more and 2.0 or less, O / C ratio of 0.5 to 0.85, vegetable oil / oil mixture supply rate volume ratio is 0.11 or more 19.0 or less white kerosene to the catalyst 1.0 g 5.3 × 10 ^{- 2. A} method for producing a hydrogen-containing oil gas, characterized by contacting under a condition of ² C-mol or more and 0.4 C-mol / h or less. Alkaline earth metal in terms of oxide, 12 wt.% To 20 wt.% Based on catalyst weight, boron in terms of sodium tetraborate decahydrate, 1.0 wt.% To 5.0 wt.% Based on catalyst weight, and With respect to the physical properties, the balance is made of aluminum oxide and the specific surface area is 180 m ² / g to 280 m ² / g and the pore volume is 0.21 ml / g to 0.31 ml / g. terms of metal, to 3.0 wt.% or more 7.5 wt.% or less touching you-containing medium in the catalyst weight, the reactor inner pressure 0.2 kg / cm ^2, G or 9.8 kg / cm ^2, G reaction temperature at less 630 ° C. to 750 The mixed oil supply amount is 5.3 × 10 with respect to 1.0 g of catalyst at a temperature of ℃ or less, a water vapor / carbon ratio of 1.0 to 2.0, an O / C ratio of 0.5 to 0.85, and a volume ratio of vegetable oil / decahydronaphthalene of 0.11 to 19.0. ^{-2 A} method for producing a hydrogen-containing oil gas characterized by contacting under conditions of C-mol or more and 0.4 C-mol / h or less.