WO2016194686A1 - 水素化処理油の製造方法及び接触分解油の製造方法 - Google Patents
水素化処理油の製造方法及び接触分解油の製造方法 Download PDFInfo
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- WO2016194686A1 WO2016194686A1 PCT/JP2016/065219 JP2016065219W WO2016194686A1 WO 2016194686 A1 WO2016194686 A1 WO 2016194686A1 JP 2016065219 W JP2016065219 W JP 2016065219W WO 2016194686 A1 WO2016194686 A1 WO 2016194686A1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
- C10G45/06—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
- C10G45/08—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G69/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process
- C10G69/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only
- C10G69/04—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one step of catalytic cracking in the absence of hydrogen
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
Definitions
- the present invention relates to a production method for obtaining hydrotreated oil from heavy hydrocarbon oil, and a production method for obtaining catalytic cracked oil from heavy hydrocarbon oil.
- FCC fluid catalytic cracking
- Non-Patent Document 1 by impregnating and supporting phosphorus, desulfurization activity and denitrogenation activity are improved, while catalyst pore volume decreases, causing rapid metal poisoning and shortening catalyst life. It is described that there is a tendency.
- Patent Document 3 proposes a method for improving desulfurization activity and denitrogenation activity using a catalyst containing phosphorus.
- the present invention provides a method for producing a hydrotreated oil that can efficiently obtain a hydrotreated oil that has been suitably desulfurized and denitrogenated from a heavy hydrocarbon oil as an FCC feedstock.
- the purpose is to provide.
- Another object of the present invention is to provide a method for producing a catalytic cracked oil, which can efficiently obtain a catalytic cracked oil by using the hydrotreated oil obtained by the above production method as a feedstock for FCC. To do.
- one aspect of the present invention relates to the following method for producing hydrotreated oil and method for producing catalytic cracked oil.
- the ratio C 2 / C 1 of the content C 2 of the iron group element to the content C 1 of phosphorus in the hydroprocessing catalyst containing a group element is less than 0.60 in molar ratio, and the hydroprocessing
- a method for producing a hydrotreated oil, wherein the average pore diameter of the catalyst is larger than 7.5 nm and smaller than 9.5 nm.
- the ratio C 2 / C 3 of the content C 2 of the iron group element to the content C 3 of the group 6 element is less than 0.45 in molar ratio
- the group 6 The production method according to (1), wherein the ratio C 1 / C 3 of the phosphorus content C 1 to the element content C 3 is more than 0.23 in terms of molar ratio.
- Catalytic cracking comprising: a step of obtaining hydrotreated oil by the production method according to (1) or (2) above; and a step of obtaining catalytic cracked oil by fluid catalytic cracking of the hydrotreated oil. Oil production method.
- the method for producing hydrotreating oil according to the present embodiment includes a step of obtaining a hydrotreating oil by circulating heavy hydrocarbon oil through a reactor filled with a hydrotreating catalyst.
- the hydrotreating catalyst contains phosphorus, an iron group element, and a group 6 element.
- the iron group element indicates a metal element belonging to the elements of Group 8, 9 and 10 of the fourth period of the periodic table
- the Group 6 element indicates a Group 6 element of the periodic table.
- the metal element which belongs to is shown.
- the iron group element include iron (Fe), cobalt (Co), and nickel (Ni)
- examples of the group 6 element include chromium (Cr), molybdenum (Mo), and tungsten (W).
- the ratio C 2 / C 1 (molar ratio) of the iron group element content C 2 to the phosphorus content C 1 in the hydrotreating catalyst is less than 0.60.
- the average pore diameter of the hydrotreating catalyst is larger than 7.5 nm and smaller than 9.5 nm.
- a hydrotreated oil that is suitably desulfurized and denitrogenated as a raw material oil for FCC from heavy hydrocarbon oil can be obtained efficiently.
- the hydrotreating catalyst since the hydrotreating catalyst has a specific metal composition and a specific average pore size, a good catalyst life and excellent denitrification activity can be obtained in the hydrotreating of heavy hydrocarbons. For this reason, according to the production method according to the present embodiment, even in the operation in which the generated oil sulfur content is constant as in the prior art, denitrification proceeds efficiently in addition to desulfurization, and the nitrogen content is sufficiently reduced. A hydrotreated oil can be obtained. That is, in the production method according to the present embodiment, compared with the conventional direct desulfurization method, the hydrotreated oil that is suitably denitrogenated as the FCC feedstock can be efficiently produced.
- the feedstock oil used in the method for producing hydrotreated oil according to the present embodiment may be a heavy hydrocarbon oil.
- heavy hydrocarbon oil means a fraction containing a fraction having a boiling point of 380 ° C. or higher under normal pressure.
- the heavy hydrocarbon oil may be, for example, an atmospheric distillation residue oil, a vacuum distillation residue oil, a solvent degreasing oil, a visbreaking oil, or the like using these as a raw material. Further, the heavy hydrocarbon oil may contain a vacuum gas oil, a residual oil of a fluid catalytic cracking device, and the like.
- Solvent removal oil may be, for example, a heavy hydrocarbon oil having a boiling point of 550 ° C. or higher and a fraction content of 70% by mass or higher.
- the method for producing the solvent-peeling oil is not particularly limited, and can be obtained, for example, by solvent depilation using a chain saturated hydrocarbon having 3 to 6 carbon atoms as a solvent.
- the solvent include propane, normal butane, isobutane, normal pentane, isopentane, and normal hexane. One or more of these may be used as the solvent.
- a solvent containing 50% by volume or more of a chain saturated hydrocarbon having 5 or 6 carbon atoms is preferably used. According to such a solvent, 60% by volume or more, or 70% by volume. There is a tendency that a solvent-peeling oil is obtained at a high extraction rate of at least%.
- the residue after extraction is isolate
- the heavy hydrocarbon oil used as the raw material oil preferably has a sulfur content of 5.0% by mass or less, more preferably 4.0% by mass or less. If the sulfur content is within this range, the content of sulfur in the resulting hydrotreated oil is sufficiently reduced, and the content of sulfur in the catalytic cracked oil obtained thereafter is also suitable. Reduced.
- the lower limit of the sulfur content in the heavy hydrocarbon oil is not particularly limited, but may be, for example, 0.6% by mass or more and 0.8% by mass or more. According to the production method according to the present embodiment, even when a heavy hydrocarbon oil having such a sulfur content is used as a raw material oil, the sulfur in the hydrotreated oil is sufficiently desulfurized by hydrotreating. The content of min is sufficiently reduced.
- the nitrogen content in the heavy hydrocarbon oil may be, for example, 0.05% by mass or more, and may be 0.07% by mass or more.
- the hydrotreating catalyst since the hydrotreating catalyst has an excellent denitrification activity, even when a heavy hydrocarbon oil containing a nitrogen content is used as a raw material oil as described above, the hydrotreating treatment is sufficiently performed. It is denitrified and the nitrogen content in the hydrotreated oil is sufficiently reduced.
- content of the nitrogen content in heavy hydrocarbon oil may be 0.35 mass% or less, for example, and may be 0.30 mass% or less. When the nitrogen content is within this range, the nitrogen content in the resulting hydrotreated oil tends to be more significantly reduced.
- the basic nitrogen content may be, for example, 0.02% by mass or more, and 0.03% by mass or more.
- the hydrotreating catalyst since the hydrotreating catalyst has excellent denitrification activity, even when a heavy hydrocarbon oil containing a basic nitrogen content is used as a raw material oil in this way, It is sufficiently denitrified, and the content of basic nitrogen in the hydrotreated oil is sufficiently reduced.
- content of the basic nitrogen content in heavy hydrocarbon oil may be 0.12 mass% or less, for example, and may be 0.10 mass% or less. If content of basic nitrogen content is this range, there exists a tendency for the basic nitrogen content in the hydrotreated oil obtained to be reduced notably.
- the heavy metal content may be more than 3 mass ppm or 5 mass ppm or more. Even when heavy hydrocarbon oil containing heavy metal is used as a raw material oil, it is possible to sufficiently suppress a decrease in the catalyst life of the hydrotreating catalyst by filling the demetallization catalyst upstream of the reactor. .
- content of the heavy metal in the heavy hydrocarbon oil after metal removal may be 12 mass ppm or less, for example, and may be 15 mass ppm or less.
- the heavy hydrocarbon oil may contain asphaltenes.
- the content of asphaltenes in the heavy hydrocarbon oil may be, for example, 0.05% by mass or more, and may be 2.0% by mass or more.
- content of the asphaltene content in heavy hydrocarbon oil may be 3.0 mass% or less, for example, and may be 4.0 mass% or less.
- the sulfur content in heavy hydrocarbon oil is a value determined in accordance with JIS K2541 “Crude oil and petroleum products / sulfur content test method”.
- the nitrogen content in the heavy hydrocarbon oil is a value determined in accordance with JIS K2541 “Crude oil and petroleum products / nitrogen content test method”.
- the content of basic nitrogen in heavy hydrocarbon oil is determined by UOP test method No. The value measured according to 269-90 is shown.
- the heavy metal content in the heavy hydrocarbon oil indicates a value measured by fluorescent X-ray analysis.
- the content of asphaltenes in the heavy hydrocarbon oil indicates a value measured in accordance with IP143 as a heptane-insoluble component.
- the hydrotreatment catalyst contains phosphorus, an iron group element, and a group 6 element, and the ratio C 2 / C 1 (molar ratio) of the content C 2 of the iron group element to the content C 1 of phosphorus in the hydrotreatment catalyst ) Is less than 0.60. Moreover, the average pore diameter of the hydrotreating catalyst is larger than 7.5 nm and smaller than 9.5 nm.
- the hydrotreating catalyst may include an inorganic oxide support and an active component supported on the inorganic oxide support. At this time, an active ingredient contains phosphorus, an iron group element, and a 6th group element.
- the hydrotreating catalyst preferably contains molybdenum and / or tungsten as the Group 6 metal, and more preferably contains molybdenum.
- the content of the iron group element in the hydrotreating catalyst may be, for example, 1.0% by mass or more, and preferably 1.5% by mass or more. Moreover, content of an iron group element may be 3.5 mass% or less, for example, and it is preferable that it is 3.0 mass% or less.
- the content of the Group 6 element in the hydrotreating catalyst may be, for example, 5.0% by mass or more, and preferably 6.0% by mass or more.
- the content of the Group 6 element may be, for example, 12.0% by mass or less, and preferably 11.0% by mass or less.
- content of phosphorus, an iron group element, and a Group 6 element shows the value measured by ICP emission spectroscopy.
- the ratio C 2 / C 1 (molar ratio) of the iron group element content C 2 to the phosphorus content C 1 is less than 0.60, preferably less than 0.55, More preferably, it is less than 0.53.
- Such a hydrotreating catalyst tends to further improve the denitrification activity.
- the ratio C 2 / C 1 is preferably 0.20 or more, and more preferably 0.25 or more. According to the hydrotreating catalyst having such a ratio C 2 / C 1 , the desulfurization activity tends to be further improved.
- the ratio C 1 / C 3 (molar ratio) of the phosphorus content C 1 to the Group C element content C 3 is preferably more than 0.23 and more than 0.40. Is more preferable, and it is more preferable that it is more than 0.50. Such a hydrotreating catalyst tends to further improve the denitrification activity.
- the ratio C 1 / C 3 is preferably less than 1.5, more preferably less than 1.0. Such a hydrotreating catalyst tends to further improve metal resistance.
- the ratio C 2 / C 3 (molar ratio) of the content C 2 of the iron group element to the content C 3 of the group 6 element is preferably less than 0.45, 0.44 More preferably, it is more preferably less than 0.42.
- the ratio of denitrification activity to desulfurization activity is further increased, and a highly denitrogenated hydrotreated oil tends to be obtained more easily.
- the specific surface area of the hydrotreating catalyst is preferably 150 m 2 / g or more, more preferably 200 m 2 / g or more, preferably 350 m 2 / g or less, more preferably 320 m 2 / g or less.
- Such a hydrotreating catalyst tends to provide a more excellent denitrification activity together with sufficient desulfurization performance.
- hydrotreating catalyst a new catalyst, a regenerated catalyst or the like can be used without any particular limitation.
- the reactor may be further filled with a catalyst other than the hydrotreated catalyst.
- the reactor may be filled with a demetallation catalyst upstream of the hydrotreating catalyst. That is, the reactor may be a reactor in which the demetalization catalyst is filled in the front stage and the hydrotreatment catalyst is filled in the back stage.
- the demetallation catalyst is not particularly limited as long as it can remove at least part of the heavy metal in the heavy hydrocarbon oil.
- the average pore diameter measured by the nitrogen adsorption method is preferably 10 nm or more, more preferably 12 nm or more. With such a demetallization catalyst, there is a tendency that a superior demetallization activity can be obtained. Further, the average pore diameter of the demetallation catalyst is preferably 25 nm or less, more preferably 23 nm or less. With such a demetallation catalyst, there is a tendency that more excellent hydrotreating activity and catalyst strength can be obtained.
- the demetallation catalyst a new catalyst, a regenerated catalyst, etc. can be used without particular limitation.
- the filling rate of the demetallization catalyst in the reactor can be appropriately changed according to the operating conditions and the feedstock composition.
- the reaction conditions for the hydrotreatment may be appropriately adjusted according to the target product oil composition (for example, the sulfur content) and the catalytic activity of the catalyst charged in the reactor.
- the reaction temperature of the hydrogenation treatment may be 300 ° C. or higher, and may be 350 ° C. or higher. By setting it as such reaction temperature, there exists a tendency for the activity of the hydrotreating catalyst with which the reactor was filled to be exhibited more notably.
- the reaction temperature of the hydrogenation treatment may be, for example, 500 ° C. or lower, and may be 450 ° C. or lower. By setting such a reaction temperature, the thermal decomposition of the heavy hydrocarbon oil does not proceed excessively, the operation of the hydroprocessing apparatus can be performed smoothly, and the deterioration of the activity of the hydroprocessing catalyst is suppressed. it can.
- the hydrogen partial pressure in the hydrogenation treatment may be 3 MPa or more, for example, or 5 MPa or more. By setting it as such a hydrogen partial pressure, there exists a tendency for hydrogenation reaction to fully advance and to obtain the hydrotreated oil by which desulfurization and denitrogenation were carried out more highly. Moreover, the hydrogen partial pressure in the hydrogenation treatment may be, for example, 25 MPa or less, or 20 Mpa or less. Such a hydrogen partial pressure tends to be economically advantageous because an increase in equipment construction costs and operating costs can be avoided.
- the content of sulfur in the hydrotreated oil is preferably 0.15% by mass or less, more preferably 0.10% by mass or less, and further preferably 0.05% by mass or less. .
- the nitrogen content in the hydrotreated oil is preferably 0.15% by mass or less, and more preferably 0.13% by mass or less. Moreover, it is preferable that content of basic nitrogen content is 0.05 mass% or less, and it is more preferable that it is 0.04 mass% or less.
- the contents of nickel and vanadium in the hydrotreated oil are each preferably 10 ppm or less, and more preferably 5 ppm or less.
- Such hydrotreated oil can sufficiently suppress metal poisoning of the catalyst used in the FCC process.
- hydrotreated oil suitable for the FCC process can be stably manufactured by an efficient and economical method.
- the mode of fluid catalytic cracking is not particularly limited, and can be performed by a known method.
- solvent removal oil As the solvent deasphalting oil, the following depressurized residue oil was used which was desolvated at a 70% extraction rate using a hydrocarbon solvent containing 90% or more of hydrocarbons having 5 and 6 carbon atoms.
- the properties of the solvent-peeling oil were as follows.
- Example 1 As a demetallation catalyst, a catalyst (demetallization catalyst X) in which molybdenum is supported on an alumina carrier at 2.7% by mass (in terms of molybdenum element) (average pore diameter: 18 nm, pore volume: 0.87 mL / g) was used. Moreover, the catalyst A having the composition shown in Table 1 was used as the hydrotreating catalyst.
- C 2 / C 3 indicates the ratio of the content C 2 of the iron group element to the content C 3 of Group 6 elements
- C 1 / C 3 the content of the group 6 element shows a phosphorus ratio of content C 1 of for C 3
- C 2 / C 1 represents the ratio of the content C 2 of the iron group element to the content C 1 of phosphorus.
- the metal removal catalyst X was filled on the reactor inlet side of the hydrotreating apparatus, and an equal volume of catalyst A was filled on the subsequent stage side. Using this hydrotreating apparatus, hydrotreating was performed under the following conditions. Hydrogen partial pressure: 14.4 Mpa Hydrogen / oil ratio: 1000L / L LHSV: 0.44h -1
- the reaction temperature was changed to 360 ° C., 380 ° C. and 400 ° C., and the hydrotreated oil obtained under each condition was analyzed for sulfur content, nitrogen content and heavy metal, and based on the analysis results, desulfurization activity (kHDS) , Denitrification activity (kHDN), and demetallation activity (kHDM) were determined.
- Each activity is a reaction order, a desulfurization reaction is secondary, a denitrogenation reaction is primary, and a demetallation reaction is primary, and a reaction rate constant at each reaction temperature is calculated. It was calculated as an average value.
- Table 2 shows the desulfurization activity (kHDS), denitrification activity (kHDN), demetallation activity (kHDM), basic nitrogen removal rate, HDN selectivity, and relative metal resistance determined by the above method.
- a reactor connected to two reactors is prepared.
- the first column is filled with the demetallation catalyst X and the demetalization catalyst Y in this order from the inlet side, and the second column is filled with the desulfurization catalyst E and desulfurization from the inlet side.
- Catalyst H and desulfurization catalyst A were charged in this order.
- the hydrogenation treatment was carried out under the following conditions.
- the first column inlet temperature was 350 ° C. for 30 days from the start of the reaction.
- the reaction temperature was adjusted so that the sulfur content in the bottom of the product oil (residue in distillation separation, fraction having a boiling point of 390 ° C. or higher) was 0.6% by mass.
- the fraction of the product oil having a boiling point of less than 390 ° C. was cut to obtain desulfurized oil 5A.
- the composition of the desulfurized oil 5A was as shown in Table 3. This desulfurized oil 5A was used for the MAT test.
- the reaction temperature was adjusted so that the sulfur content in the bottom of the product oil (residue in distillation separation, fraction having a boiling point of 390 ° C. or higher) was 0.6% by mass.
- the fraction of the product oil having a boiling point of less than 390 ° C. was cut to obtain desulfurized oil 5B.
- the composition of the desulfurized oil 5B was as shown in Table 3. This desulfurized oil 5B was used for the MAT test.
- “Density (15 ° C.)” indicates a density at 15 ° C.
- “LCO fraction” indicates the content of a fraction having a boiling point of 221 ° C. or more and less than 343 ° C.
- “VR fraction” is a boiling point. The content of a fraction at 538 ° C. or higher is shown.
- “residual carbon”, “nitrogen”, “basic nitrogen”, “sulfur”, “Ni” and “V” respectively represent residual carbon, nitrogen, basic nitrogen, sulfur, nickel and The content of vanadium is shown.
- the “average molecular weight” represents the average molecular weight number of hydrocarbons measured by a GPC apparatus.
- Example 5 As shown in Table 3, in the hydrogenation treatment of Example 5, basic nitrogen was used even though the reaction temperature (364 ° C.) at which the sulfur content was 0.6% by mass was lower than that of Comparative Example 5 (377 ° C.). Is less than that of Comparative Example 5. Moreover, as shown in Table 4, in the catalytic cracking reaction of Example 5, the amount of coke produced is suppressed as compared with Comparative Example 5. Further, as shown in Table 4, in Example 6 in which the catalyst / feed oil ratio was adjusted so that the amount of coke produced was comparable to that in Comparative Example 5, a higher decomposition rate was obtained as compared with Comparative Example 5.
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Abstract
Description
(1)重質炭化水素油を水素化処理触媒が充填された反応器に流通させて、水素化処理油を得る工程を備え、前記水素化処理触媒が、リン、鉄族元素、及び第6族元素を含有し、前記水素化処理触媒におけるリンの含有量C1に対する鉄族元素の含有量C2の比C2/C1が、モル比で0.60未満であり、前記水素化処理触媒の平均細孔径が、7.5nmより大きく、9.5nmより小さい、水素化処理油の製造方法。
(2)前記水素化処理触媒において、第6族元素の含有量C3に対する鉄族元素の含有量C2の比C2/C3が、モル比で0.45未満であり、第6族元素の含有量C3に対するリンの含有量C1の比C1/C3が、モル比で0.23より多い、上記(1)に記載の製造方法。
(3)上記(1)又は(2)に記載の製造方法によって水素化処理油を得る工程と、前記水素化処理油の流動接触分解によって、接触分解油を得る工程と、を備える、接触分解油の製造方法。
本実施形態に係る水素化処理油の製造方法で使用される原料油は、重質炭化水素油であればよい。本明細書中、重質炭化水素油とは、常圧下での沸点が380℃以上の留分を含むものをいう。
水素化処理触媒は、リン、鉄族元素及び第6族元素を含有し、水素化処理触媒におけるリンの含有量C1に対する鉄族元素の含有量C2の比C2/C1(モル比)は、0.60未満である。また、水素化処理触媒の平均細孔径は、7.5nmより大きく、9.5nmより小さい。
本実施形態に係る水素化処理油の製造方法において、反応器には、上記水素化処理触媒以外の触媒がさらに充填されていてもよい。例えば、原料油として使用される重質炭化水素油が重金属を含有する場合、反応器には、水素化処理触媒より上流側に、脱金属触媒が充填されていてよい。すなわち、反応器は、前段に脱金属触媒が充填され、後段に水素化処理触媒が充填されたものであってよい。
本実施形態に係る水素化処理油の製造方法では、重質炭化水素油を水素化処理触媒が充填された反応器に流通させて、重質炭化水素油の水素化処理を行うことにより、水素化処理油が得られる。
本実施形態に係る水素化処理油の製造方法で得られる水素化処理油は、高度に脱硫及び脱窒素されており、FCC用原料油として好適に用いることができる。
本実施形態では、上述の製造方法で得られた水素化処理油をFCC用原料油として用いることで、効率良く接触分解油を得ることができる。すなわち、本実施形態に係る接触分解油の製造方法は、上述の方法で水素化処理油を得る工程と、水素化処理油の流動接触分解によって接触分解油を得る工程と、を備えるものであってよい。
以下の実施例及び比較例では、下記組成の常圧残渣油A及び溶剤脱れき油を等容量混合したものを原料油として使用した。
常圧残渣油中の硫黄分の含有率:2.9質量%
常圧残渣油中のバナジウムの含有率:40質量ppm
常圧残渣油中のニッケルの含有率:15質量ppm
常圧残渣油中のアスファルテンの含有率:3.0質量%
15℃における常圧残渣油の密度:0.9619g/cm3
100℃における常圧残渣油の動粘度:30.5mm2/s
常圧残渣油中の残炭分(carbon residue)の含有率:9.0質量%
常圧残渣油中の窒素分の含有率:0.154質量%
常圧残渣油中の塩基性窒素分の含有率:0.052質量%
溶剤脱れき油としては、下記減圧残渣油に対して、炭素数5及び6の炭化水素を90%以上含む炭化水素溶剤を使用して抽出率70%で溶剤脱れきしたものを用いた。溶剤脱れき油の性状は以下のとおりであった。
減圧残渣油中の硫黄分の含有率:4.4質量%
減圧残渣油中のバナジウムの含有率:98質量ppm
減圧残渣油中のニッケルの含有率:30質量ppm
減圧残渣油中のアスファルテンの含有率:10.4質量%
15℃における減圧残渣油の密度:1.0400g/cm3
100℃における減圧残渣油の動粘度:461mm2/s
減圧残渣油中の残炭分の含有率:24.7質量%
減圧残渣油中の窒素分の含有率:0.38質量%
減圧残渣油中の塩基性窒素分の含有率:0.13質量%
溶剤脱れき油中の硫黄分の含有率:4.2質量%
溶剤脱れき油中のバナジウムの含有率:29質量ppm
溶剤脱れき油中のニッケルの含有率:9質量ppm
溶剤脱れき油中のアスファルテンの含有率:0.2質量%
15℃における溶剤脱れき油の密度:1.0037g/cm3
100℃における溶剤脱れき油の動粘度:419mm2/s
溶剤脱れき油中の残炭分の含有率:15.5質量%
溶剤脱れき油中の窒素分の含有率:0.182質量%
溶剤脱れき油中の塩基性窒素分の含有率:0.062質量%
実施例1では、脱金属触媒として、アルミナ担体にモリブデンを2.7質量%(モリブデン元素換算)担持した触媒(脱金属触媒X)(平均細孔直径:18nm、細孔容積:0.87mL/g)を用いた。また、水素化処理触媒として、表1に記載の組成の触媒Aを用いた。なお、表1中、C2/C3は、第6族元素の含有量C3に対する鉄族元素の含有量C2の比を示し、C1/C3は、第6族元素の含有量C3に対するリンの含有量C1の比を示し、C2/C1は、リンの含有量C1に対する鉄族元素の含有量C2の比を示す。
水素分圧:14.4Mpa
水素/油比:1000L/L
LHSV:0.44h-1
水素化処理触媒として触媒Aにかえて表1に記載の触媒B~Dを用いたこと以外は、実施例1と同様にして、水素化処理及び得られた水素化処理油の分析を行った。分析結果は表2に示すとおりであった。
水素化処理触媒として触媒Aにかえて表1に記載の触媒E~Hを用いたこと以外は、実施例1と同様にして、水素化処理及び得られた水素化処理油の分析を行った。分析結果は表2に示すとおりであった。
複数の触媒を用いた水素化処理システムを実施して生成油を得た。また、得られた生成油の接触分解反応の反応性を確認するため、生成油についてMAT(Micro Activity Test)試験を実施した。以下に詳細について説明する。
常圧残渣油中の硫黄分の含有率:0.92質量%
常圧残渣油中のバナジウムの含有率:11質量ppm
常圧残渣油中のニッケルの含有率:11質量ppm
常圧残渣油中のアスファルテンの含有率:0.2質量%
15℃における常圧残渣油の密度:0.9187g/cm3
100℃における常圧残渣油の動粘度:25.2mm2/s
常圧残渣油中の残炭分(carbon residue)の含有率:5.1質量%
常圧残渣油中の窒素分の含有率:0.170質量%
常圧残渣油中の塩基性窒素分の含有率:0.057質量%
水素分圧:14.4Mpa
水素/油比:1000L/L
LHSV:0.44h-1
1塔目出口温度=1塔目入口温度+8℃
2塔目入口温度=1塔目入口温度-2℃
2塔目出口温度=2塔目入口温度+20℃
反応温度:530℃
触媒/油比:8.5(重量比)
触媒重量:12g
反応装置の1塔目に入口側から脱金属触媒X及び脱金属触媒Yをこの順に充填し、2塔目に入口側から脱硫触媒E及び脱硫触媒Hをこの順に充填し、触媒の使用量をX:Y:E:H=22:22:23:33(容量比)としたこと以外は、実施例5と同様にして、水素化処理を実施した。
触媒/油比を9.5(従量比)に変更したこと以外は、実施例5と同様にしてMAT試験を実施した。試験結果は表4に示した。
Claims (3)
- 重質炭化水素油を水素化処理触媒が充填された反応器に流通させて、水素化処理油を得る工程を備え、
前記水素化処理触媒が、リン、鉄族元素、及び第6族元素を含有し、
前記水素化処理触媒におけるリンの含有量C1に対する鉄族元素の含有量C2の比C2/C1が、モル比で0.60未満であり、
前記水素化処理触媒の平均細孔径が、7.5nmより大きく、9.5nmより小さい、
水素化処理油の製造方法。 - 前記水素化処理触媒において、
第6族元素の含有量C3に対する鉄族元素の含有量C2の比C2/C3が、モル比で0.45未満であり、
第6族元素の含有量C3に対するリンの含有量C1の比C1/C3が、モル比で0.23より多い、
請求項1に記載の製造方法。 - 請求項1又は2に記載の製造方法によって水素化処理油を得る工程と、
前記水素化処理油の流動接触分解によって、接触分解油を得る工程と、
を備える、接触分解油の製造方法。
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US11788017B2 (en) | 2017-02-12 | 2023-10-17 | Magëmã Technology LLC | Multi-stage process and device for reducing environmental contaminants in heavy marine fuel oil |
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