WO2014044195A1 - 一种重整生成油加氢处理方法 - Google Patents
一种重整生成油加氢处理方法 Download PDFInfo
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- WO2014044195A1 WO2014044195A1 PCT/CN2013/083786 CN2013083786W WO2014044195A1 WO 2014044195 A1 WO2014044195 A1 WO 2014044195A1 CN 2013083786 W CN2013083786 W CN 2013083786W WO 2014044195 A1 WO2014044195 A1 WO 2014044195A1
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- WIPO (PCT)
- Prior art keywords
- oil
- hydrogen
- reforming
- gas
- reformed
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 108
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 149
- 239000001257 hydrogen Substances 0.000 claims abstract description 138
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 138
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 50
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- 239000007791 liquid phase Substances 0.000 claims abstract description 17
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 14
- 238000009903 catalytic hydrogenation reaction Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000002407 reforming Methods 0.000 claims description 130
- 239000011148 porous material Substances 0.000 claims description 68
- 239000007788 liquid Substances 0.000 claims description 64
- 238000002156 mixing Methods 0.000 claims description 48
- 239000007789 gas Substances 0.000 claims description 35
- 238000000926 separation method Methods 0.000 claims description 23
- 238000001833 catalytic reforming Methods 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 13
- 229920006395 saturated elastomer Polymers 0.000 claims description 12
- 239000004215 Carbon black (E152) Substances 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract description 12
- 150000001336 alkenes Chemical class 0.000 abstract description 12
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 12
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052794 bromium Inorganic materials 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 203
- 230000000153 supplemental effect Effects 0.000 description 26
- 239000012528 membrane Substances 0.000 description 20
- 239000000047 product Substances 0.000 description 20
- 239000000758 substrate Substances 0.000 description 11
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000000629 steam reforming Methods 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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- 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
-
- 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
- C10G45/22—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 with hydrogen dissolved or suspended in the oil
-
- 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
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
- C10G65/08—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps at least one step being a hydrogenation of the aromatic hydrocarbons
Definitions
- the invention relates to a reforming oil hydrotreating process. Background technique
- Catalytic reforming is one of the main processes of petroleum refining. It converts naphtha and other feedstock oil into aromatic hydrocarbon-rich reforming oil at a certain temperature, pressure, hydrogen and catalyst, and produces hydrogen by-product. process.
- the reformed oil obtained by gas-liquid separation of the mixture obtained by catalytic reforming can be directly used as a blending component of a vehicle fuel, and can also be subjected to an aromatic hydrocarbon extraction process to produce chemical raw materials such as benzene, toluene and xylene. .
- the reformed oil is not only rich in aromatic hydrocarbon and solvent oil fractions, but also contains small amounts of olefins. Therefore, to reproduce the oil to produce a qualified aromatic and solvent oil product, it is necessary to remove the olefin.
- the olefin content in the reformed oil has also increased correspondingly, so that the problem of removing the olefin from the reforming oil is more prominent.
- the main methods for reforming oil to remove olefins are: white earth adsorption refining, reforming oil-derived distillate oil or full-distillate post-hydrogenation.
- white earth adsorption refining reforming oil-derived distillate oil or full-distillate post-hydrogenation.
- the adsorption and purification of clay is limited in the adsorption capacity of clay, and the waste clay cannot be regenerated.
- Pd or Pt-based precious metal catalysts have been used to selectively hydrogenate distillate or whole fractions of reformed oil to remove olefins.
- CN1004421B discloses a hydrotreating process for reforming oil, which uses a reforming oil having a bromine number of 0.5-8 g bromine/100 g and an aromatic content of 35-55 wt% as a raw material, and the reaction temperature is 200. -300 ° C, the partial pressure of hydrogen is 5-20 kg / cm 2 , the liquid space velocity is 6-20 hours - the hydrogen / oil volume ratio is 200-1000, using 0.15-0.6 wt% Pd (for the carrier) Thin-shell strip-shaped Pd-Al 2 0 3 catalyst.
- CN1049001C discloses a reforming oil refining process, which uses a reforming oil having a bromine number of 0.5-8.0 g bromine/10.0 g as a raw material, and a catalytic hydrogenating agent having a Pd content of 0.15-6 wt% (for the carrier), the shell ⁇ / ⁇ - ⁇ 1 2 0 3 , wherein the raw material has been removed by more than C 9 aromatic hydrocarbons and the aromatic content is 20-85% by weight, the reaction temperature is 150-200 ° C, and the hydrogen partial pressure in the reactor It is 0.5-3.0 MPa, and the liquid space velocity is 3-15 h - the hydrogen oil volume ratio is 100-500.
- the object of the present invention is to provide a reforming oil hydrotreating method which adopts a liquid phase hydrogenation process, on the one hand, eliminates the demand for circulating hydrogen, and on the other hand, can fully utilize the dissolution in the reforming oil. hydrogen.
- the inventors of the present invention found in practice that: the mixture obtained by contacting the hydrocarbon oil with the catalyst having catalytic reforming under catalytic reforming conditions is subjected to gas-liquid separation in a gas-liquid separation tank, and the obtained reforming oil is produced. The hydrogen generated during the catalytic reforming process is still dissolved. If the reformed oil is obtained from the bottom of the gas-liquid separation tank, the liquid phase hydrotreating is directly performed, and the dissolved hydrogen in the reformed oil is used as the hydrogenation.
- One of the treated hydrogen source or hydrogen source can fully utilize the residual hydrogen remaining in the reforming oil to remove the olefin in the reforming oil, and on the other hand, can eliminate the need for circulating hydrogen. On the basis of this, the present invention has been completed.
- the present invention provides a reforming oil hydrotreating process, the method comprising: contacting a reformed oil with a catalyst having catalytic hydrogenation in a hydrogenation reactor under liquid phase hydrotreating conditions,
- the hydrogen used in the hydrotreating is derived at least in part from the dissolved hydrogen in the reforming oil.
- the reforming oil separated from the reforming product separation tank is directly subjected to liquid phase hydrotreating, which fully utilizes the dissolved hydrogen in the reforming oil, and It is capable of removing olefins from reforming oils, while also eliminating the need for recycled hydrogen and its recycling equipment. Therefore, the reforming oil hydrotreating method according to the present invention simplifies the process flow, reduces investment costs and operating costs, and realizes efficient and low-cost industrial production.
- the reforming oil obtained by the reforming oil hydrotreating method of the present invention can have a bromine index of 50 mgBr 2 /100 g or less, or even 10 mgBr 2 /100 g or less; and the amount of aromatic hydrocarbon loss is small and can be less than 0.5% by weight.
- Figure 1 is a schematic view showing the structure of an embodiment of a mixing apparatus used in a reforming oil hydrotreating method according to the present invention
- Figure 2 is a schematic view showing the structure of another embodiment of the mixing apparatus used in the reforming oil hydrotreating method according to the present invention.
- Figure 3 is a schematic view showing the structure of a preferred embodiment of the mixing device used in the reforming oil hydrotreating method according to the present invention
- Figure 4 is a schematic cross-sectional view showing a preferred embodiment of a member having a perforated region in a mixing device used in a reforming oil hydrotreating method according to the present invention
- FIG. 5 is a preferred embodiment of a reforming oil hydrotreating process according to the present invention
- FIG. 6 is a view for explaining a plurality of hydrogenation reactors connected in series in a reforming oil hydrotreating method according to the present invention; Implementation method;
- Figure 7 is a diagram for explaining an embodiment in which a plurality of hydrogenation reactors are connected in parallel in a reforming oil hydrotreating method according to the present invention
- Fig. 8 is for explaining a part I in Fig. 5.
- the present invention provides a reforming oil hydrotreating process, the method comprising: contacting a reformed oil with a catalyst having catalytic hydrogenation in a hydrogenation reactor under liquid phase hydrotreating conditions,
- the hydrogen used in the hydrotreating is derived at least in part from the dissolved hydrogen in the reforming oil.
- the reforming oil is injected into a gas-liquid separation tank from a catalytic reforming mixture obtained by contacting a hydrocarbon oil with a catalyst having reforming catalysis under catalytic reforming conditions, from the The reforming obtained from the bottom of the gas-liquid separation tank produces oil. That is, according to the hydrotreating method of the present invention, a mixture obtained by contacting a hydrocarbon oil with a catalyst having catalytic reforming under catalytic reforming conditions is subjected to gas-liquid separation in a gas-liquid separation tank, from which the separation tank is The reformed oil obtained from the bottom of the tank is directly subjected to liquid phase hydrotreating.
- the reforming oil contains hydrogen remaining in the catalytic reforming process
- the reforming mixture outputted from the reforming reactor is subjected to gas-liquid separation to obtain reforming oil, thereby
- the hydrogen in the whole produced oil i.e., the hydrogen remaining in the catalytic reforming process
- the dissolved hydrogen in the reformed produced oil refers to the residual hydrogen in the catalytic reforming process.
- the content of dissolved hydrogen in the reformed oil is slightly different depending on the conditions of gas-liquid separation and the composition of the reformed oil. Generally, based on the total amount of the reformed oil, the weight The content of dissolved hydrogen in the whole produced oil is 0.001 to 0.025% by weight.
- the source of hydrogen when the reforming oil is hydrotreated, the source of hydrogen may be only hydrogen contained in the reforming oil itself, or hydrogen contained in the reforming oil itself.
- the hydrogen added to the oil is reformed. That is, according to the hydrotreating method of the present invention, the hydrotreating may be carried out in the absence of supplemental hydrogen gas or in the presence of supplemental hydrogen.
- the supplemental hydrogen refers to hydrogen gas injected into the reformed oil in one or a portion of the contact and/or the contact.
- the hydrotreating method of the present invention whether the amount of hydrogen to be replenished and the amount of supplemental hydrogen can be adjusted according to the reforming
- the content of dissolved hydrogen in the produced oil and the content of olefin in the reformed oil are appropriately selected.
- the reforming oil hydrotreating method according to the present invention preferably does not replenish the reforming oil when the amount of dissolved hydrogen in the reforming oil is sufficient to remove the olefin in the reforming oil to meet the requirements.
- Hydrogen only uses dissolved hydrogen remaining in the catalytic reforming process contained in the reformed oil to be a hydrogen source for hydrogenation.
- the hydrotreating method according to the present invention is preferably carried out in the presence of supplemental hydrogen.
- the supplementary hydrogen in the presence of supplemental hydrogen, may be injected into the reforming oil at a time, for example: before the reforming oil may be sent to the hydrogenation reactor Injecting the supplementary hydrogen into the reforming oil; the supplementary hydrogen may also be injected into the reforming oil in stages, for example: at least one supplementary hydrogen inlet may be disposed on the hydrogenation reactor, The supplemental hydrogen is injected into the reforming oil at the inlet end of the hydrogenation reactor, and the remaining portion of the supplemental hydrogen is injected into the reforming oil at the inlet of the supplemental hydrogen.
- hydrogen gas in the presence of supplemental hydrogen, hydrogen gas can be injected into the reforming oil to form an oil.
- the manner of injecting the supplemental hydrogen into the reformed oil to produce comprises: injecting the supplemental hydrogen into the reformed oil through pores having an average pore size of nanometer size.
- the supplementary hydrogen is injected into the reforming oil through the pores having an average pore diameter of nanometer size, and the supplementary hydrogen can be highly dispersed and dissolved in the reforming oil at a faster rate, thereby eliminating the liquid phase addition to the existing hydrocarbon oil.
- the hole is a through hole.
- the pores may have an average pore diameter of from 1 nm to 1000 nm, preferably
- the average pore diameter of the pores is more preferably from 30 nm to 800 nm, further preferably from 50 nm to 500 nm.
- the average pore size is determined by scanning electron microscopy.
- Hydrogen gas may be injected into the static reforming oil, or hydrogen may be injected into the reforming oil in a flowing state. It is preferable to inject hydrogen into the reforming oil in a flowing state, so that hydrogen can be injected into the reforming oil while transporting the reforming oil to obtain further improved production efficiency.
- the hydrogen injection rate is V1 and is expressed as g_h- ⁇ m- 2 (in terms of the total amount of hydrogen per unit area per unit time)
- the hydrogen dispersion dissolves the effect.
- Vl / v 2 0.005-0.01, so that not only can Good hydrogen dispersing and dissolving effect, and high production efficiency can be obtained.
- the rate of hydrogen injection reforming to form oil can generally be 0.0001-2000 kg_h- ⁇ m- 2 .
- the supplementary hydrogen gas can be injected into the reforming oil through a hole having an average pore diameter of nanometer size by various methods.
- the supplemental hydrogen is injected into the reformate-forming oil through a mixing device having a pore size of nanometer-sized pores, the mixing device comprising at least one liquid passage for containing reforming oil and at least a gas passage for accommodating the supplemental hydrogen gas, the liquid passage and the gas passage being abutted by a member, at least a portion of the member being a perforated region, the perforated region having the average pore size being a nanometer size
- the pores through which the supplemental hydrogen gas is injected into the reforming oil are provided.
- liquid passage means a space capable of accommodating reforming oil
- gas passage means a space capable of accommodating the supplementary hydrogen
- the positional relationship between the liquid passage and the gas passage is not particularly limited as long as the liquid passage and the gas passage are adjacent to each other by the member.
- the gas passage 2 is located inside the liquid passage 1, and the inner wall of the member 3 constitutes the gas passage 2.
- the gas passage 2 is located on one side of the liquid passage 1, and the liquid passage 1 and the gas passage 2 pass through the member 3. Separated.
- the gas passage 2 surrounds the outside of the liquid passage 1, and the passage between the gas passage 2 and the liquid passage 1 3 and separated.
- At least a portion of the member is a perforated region that extends along a length of the member.
- the apertured region covers the entire member (ie, the liquid channel and the gas channel are adjacent by a member having the hole having the average pore size of nanometer size, and the supplementary hydrogen gas is passed through the hole Injected into the reforming oil).
- the pored region has pores having an average pore diameter of nanometers so that hydrogen gas is injected into the hydrocarbon oil through the pores having an average pore diameter of nanometers.
- the porosity of the apertured region is preferably from 5 to 28%, which enables a sufficient amount of hydrogen to be better dispersed and dissolved in the hydrocarbon oil.
- the porosity of the porous region is more preferably from 10 to 25%.
- the porosity ratio refers to the percentage of the pore volume in the pored region occupying the total volume of the pore region, which is determined by a nitrogen adsorption method.
- the member may be of various kinds capable of allowing supplementary hydrogen contained in the gas passage to pass through the hole into the reforming oil contained in the liquid passage, A member having bubbles of a nanometer size is formed.
- the member is a pipe.
- the member is formed of a porous material, and the average of the holes in the member
- the pore size is nanometer size.
- the member in another embodiment, includes a substrate and a porous film attached to the substrate, the substrate having a hole, and the porous film may be located in the substrate and housed in the liquid passage
- the surface of the inner reforming oil-forming contact may also be located on the surface of the substrate that is in contact with the supplemental hydrogen contained in the gas passage.
- the porous membrane is located on a surface of the substrate that is in contact with reformate-forming oil contained in the liquid passage.
- the pores in the porous membrane have an average pore size of nanometer size. The average pore diameter of the pores in the substrate is not particularly limited as long as it can pass a gas.
- the pores on the substrate have an average pore size of a micron size (ie, greater than 1 micrometer to 1000 micrometers) or a nanometer size (ie, 1 nanometer to 1000 nanometers), that is, an average pore diameter of the pores on the substrate is 1 Nano to 1000 microns.
- the member is preferably a membrane tube (i.e., a porous tube having pores as a matrix, and the porous membrane having the porous membrane on the inner wall and/or the outer wall).
- the film tube may be a common inorganic film tube (e.g., an inorganic ceramic film tube) or an organic film tube as long as the material forming the film tube does not chemically interact with reforming oil and hydrogen.
- the member may be prepared by a conventional method, or may be commercially available, and will not be described herein.
- the pipe can be used in combination with a casing. That is, the duct is placed in a casing with a space between the outer wall of the duct and the inner wall of the casing.
- the space formed by the inner wall of the duct is the liquid passage for accommodating the reformed oil, and the space formed by the outer wall of the duct and the inner wall of the casing is the gas passage for accommodating the supplemental hydrogen;
- the space formed by the inner wall of the duct is the gas passage for accommodating supplemental hydrogen, and the space formed by the outer wall of the duct and the inner wall of the casing is the liquid passage for accommodating reforming oil.
- a space formed by an inner wall of the duct is the liquid passage for accommodating reforming oil, and a space formed by an outer wall of the duct and an inner wall of the casing is a gas for accommodating supplementary hydrogen aisle.
- the member is a film tube
- a space in contact with the porous film on the film tube as a liquid passage.
- a space formed by the inner wall of the membrane tube serves as the liquid passage for accommodating reforming oil
- the outer wall of the membrane tube and the shell The space formed by the inner wall of the body acts as the gas passage for accommodating the supplemental hydrogen.
- the pipe when the member is a pipe, the pipe may have one of the liquid passages, or may have a plurality of the liquid passages.
- the duct 4 has a plurality (for example 4-20) of liquid passages 1 that are parallel to each other.
- the plurality of liquid passages are plural, the plurality of liquid passages are preferably evenly distributed.
- the housing may be various members having a hollow structure and at least one opening, the opening being in communication with a gas source for supplementing hydrogen or a reforming oil storage tank to supplement hydrogen or heavy
- a gas source for supplementing hydrogen or a reforming oil storage tank to supplement hydrogen or heavy
- the entire generated oil is introduced into a space between the inner wall of the casing and the outer wall of the pipe (i.e., the gas passage or the liquid passage).
- the amount of the supplemental hydrogen gas can be appropriately selected according to the saturated dissolved amount of hydrogen in the reforming oil and the chemical hydrogen consumption of the reforming oil to enable hydrogenation.
- the product can meet the requirements of use.
- the hydrotreating method of the present invention when the supplementary hydrogen gas is injected into the reforming oil through the pores having an average pore diameter of nanometer size, the hydrogen gas can be highly dispersed and dissolved in the reforming oil at a faster rate. Therefore, the hydrotreating method according to the present invention can ensure the hydrogen carrying amount of the reforming oil even if hydrogen is not injected into the reforming oil.
- the amount of the supplemental hydrogen may be 0.01 to 4 times the saturated dissolved amount of hydrogen in the reforming oil under the liquid phase hydrotreating conditions, It is preferably 0.01 to 2 times the saturated dissolved amount, more preferably 0.1 to 1 times the saturated dissolved amount, and still more preferably 0.1 to less than 1 times the saturated dissolved amount.
- the saturated dissolved amount refers to the number of grams of hydrogen dissolved in 100 g of reformed oil under liquid phase hydrotreating conditions. The various methods commonly used in the art can be used to determine the amount of saturated hydrogen dissolved in the reformed oil, which will not be described in detail herein.
- the condition for injecting the supplementary hydrogen into the reformed oil is not particularly limited and may be a conventional choice in the art.
- supplemental hydrogen can be injected into the reforming produced oil at the temperature and pressure of the hydrotreating.
- the contact of the reformed oil to the catalyst having catalytic hydrogenation can be carried out in various hydrogenation reactors conventionally used in the art, and is not particularly limited.
- the contacting may be carried out in a tank reactor or in a tubular reactor.
- the contacting is carried out in a tubular reactor.
- the tubular reactor refers to a reactor having a large aspect ratio, for example; the ratio of the length to the inner diameter of the tubular reactor may be 5-50:1.
- the inner diameter of the tubular reactor may be a conventional choice in the art.
- the tubular reactor has an inner diameter of 20 to 1000 mm.
- hydrogen is preferably injected into the reforming oil by the mixing device described above.
- the number of the mixing devices may be one or plural.
- the mixing device is preferably disposed at the inlet of the tubular reactor At the end, in the process of injecting reforming oil into the tubular reactor, hydrogen is injected into the reforming oil by the mixing device.
- the mixing device can be disposed at the inlet end of the tubular reactor by various methods commonly used in the art, as long as the reforming oil is allowed to pass through the liquid passage of the mixing device, and the gas passage is passed through the member
- the supplemental hydrogen inside can be injected into the reforming oil to form oil.
- hydrogen is injected into the reforming oil to form a reforming oil containing hydrogen gas, and the reforming oil containing hydrogen gas is fed to the reactor, and the mixing is carried out by using the mixing device described above.
- the inner diameter of the outlet 0 of the apparatus for outputting the reformed oil to which hydrogen is added is ri
- the method of the present invention in addition to providing at least one of said mixing devices at the inlet end of said tubular reactor, preferably at least one of said mixing devices is provided on said tubular reactor, which enables the hydrotreating process
- the supplementary hydrogen is injected into the reformed oil in batches according to the chemical hydrogen consumption of the reformed oil and the hydrogen content in the reformed oil to further improve the efficiency of the hydrotreating method according to the present invention.
- the mixing device can be disposed in the tubular reactor in various ways, for example, in the manner described in Figure 1 : the space formed by the inner wall of the tubular reactor is used as a liquid passage, and in the tubular reactor Opening a wall; forming a member having an average pore size of nanometers as a pipe sealed at one end, the space formed by the inner wall of the pipe serving as a gas passage; and extending the pipe through the opening into the tubular reactor (wherein The outer wall of the pipe is sealingly connected to the opening, and one end of the pipe in the tubular reactor is a sealed end, and the other end of the pipe is connected with a source of supplemental hydrogen gas, thereby injecting supplementary hydrogen through the pipe.
- the outer wall of the pipe is sealingly connected to the opening, and one end of the pipe in the tubular reactor is a sealed end, and the other end of the pipe is connected with a source of supplemental hydrogen gas, thereby injecting supplementary hydrogen through the pipe.
- the hydrotreating is carried out in a tubular reactor
- the mixing device preferably comprises: a pipe as the member, and a fitting with the pipe a housing used, wherein a space formed by an inner wall of the duct serves as a liquid passage, and a space formed by an outer wall of the duct and an inner wall of the casing serves as a gas passage, and the liquid passage and the tubular reactor Used for space communication for hydrotreating.
- the number of the hydrogenation reactors may be one or plural (i.e., two or more).
- the plurality of hydrogenation reactors may be connected in series or in parallel.
- the mixing device described above feeds the supplemental hydrogen into the reforming oil).
- the catalyst having catalytic hydrogenation can be present in various forms.
- the hydrogenation reactor is a fixed bed reactor.
- the number of the catalyst beds may be a conventional choice in the art, for example: the number of the catalyst beds may be one or two or two. the above.
- the volumetric space velocity of the reforming oil may be 5-20 h - preferably 10-20 11 persons
- the hydrotreating is carried out in a tubular fixed bed hydrogenation reactor.
- the hydrotreating method according to the present invention achieves the object of the present invention by utilizing the dissolved hydrogen remaining in the catalytic reforming process contained in the reforming oil, and the liquid phase hydrotreating conditions are not particularly limited and may be Conventional choices in the art.
- the liquid phase hydrotreating conditions include: the temperature may be from 130 to 200 ° C, preferably from 140 to 160 ° C; and the pressure may be from 1.5 to 3.5 MPa, preferably from 1.5 to 2 MPa, in terms of gauge pressure.
- the catalyst having catalytic hydrogenation can be various catalysts having catalytic hydrogenation which are commonly used in the art, and will not be described herein.
- the hydrotreating method according to the present invention further comprising: removing light components in the product obtained by the contacting (ie, hydrotreating) to remove a catalytic reforming process contained in the product obtained by hydrotreating and adding Light components (eg, components below C 5 ) produced during hydrogen processing.
- the hydrotreating method according to the present invention is not particularly limited for the method of removing the light component, and a conventional method in the art can be employed.
- the hydrogenated product can be heated to desorb the light component in the hydrogenated product.
- the hydrotreating method according to the present invention when the light component in the hydrogenated product is taken off by heating the hydrogenated product, the hydrotreating method according to the present invention further comprises removing the product obtained by the contacting The light component is obtained to obtain a light-removing component oil, and the reformed oil is subjected to heat exchange with the light-removing component oil before the reforming oil is sent to the hydrogenation reactor for the hydrotreating.
- the waste heat in the light-removing component oil can be fully utilized, and the reforming oil can be preheated, thereby eliminating the need for the reforming oil preheating furnace, and further reducing the equipment investment of the hydrotreating method according to the present invention. Cost and energy consumption.
- the hydrotreating method according to the present invention may further comprise removing heavy components from the light component oil to obtain aromatic hydrocarbon extraction. raw material.
- the heavy components in the de-light component oil can be removed by methods commonly used in the art, and will not be described herein.
- Figure 5 is a preferred embodiment of a reforming oil hydrotreating process in accordance with the present invention.
- the hydrocarbon oil is contacted with the catalyst having reforming catalysis in the catalytic reforming reactor 5 under catalytic reforming conditions to obtain a catalytic reforming mixture; and the obtained catalytic reforming mixture is injected into the gas liquid Separation tank 6
- the gas-liquid separation is carried out to remove the volatile component 7, and the reforming oil is obtained at the bottom of the gas-liquid separation tank; if necessary, a predetermined amount of hydrogen is injected into the reformed oil to be reformed by the mixing device 8, and reforming Producing oil mixture, and injecting the obtained hydrogen-reforming reforming oil into a hydrogenation reactor 9 (preferably a tubular reactor), and contacting the catalyst having catalytic hydrogenation under liquid phase hydrotreating conditions;
- the hydrogenation product output from the hydrogenation reactor 9 enters the delightizing component column 10, the light component 12 is removed, and the light component oil is obtained at the bottom of the delighting component column 10
- a plurality of hydrogenation reactors may be provided, and the plurality of hydrogenation reactors may be connected in series or in parallel.
- the mixing device may be disposed at the inlet end of the first hydrogenation reactor along the flow direction of the oil produced by the reforming; or as shown in Fig. 6, in each of the hydrogenation reactors
- a mixing device 8 is provided at the inlet end of the reactor 9.
- only one mixing device may be provided, the reforming oil is mixed with hydrogen, and the obtained mixture is separately sent to a plurality of hydrogenation reactors connected in parallel;
- a mixing device 8 is provided at the inlet end of each hydrogenation reactor 9 as indicated.
- Figure 8 is a view for explaining a portion I in Figure 5, showing the structure of the mixing device 8 of Figure 5, and a mixing device
- the mixing device 8 includes a gas passage 2 and a liquid passage 1, and the gas passage 2 and the liquid passage 1 are adjacent by a member 3, wherein the inner wall of the member 3 forms a liquid passage 1, and the outer wall of the member 3 is
- the inner wall of the housing 22 constitutes a gas passage 2, the two ends of which are closed, and the housing 22 has an opening (not shown) communicating with a source of hydrogen gas.
- the mixing device 8 is connected to the inlet line 18 of the tubular reactor 9.
- the reformed produced oil enters the hydrogenation reactor 9 through the liquid passage 1, and when the reformed oil is produced through the liquid passage 1, the supplementary hydrogen in the gas passage 2 is injected into the reforming oil through the member 3. And dispersing and dissolving in the reforming oil; carrying hydrogen reforming to form an oil and then entering the hydrogenation reactor 9 to carry out a hydrogenation reaction in the presence of a catalyst having catalytic hydrogenation.
- the mixing device 8 can be attached to the inlet line 18 in a variety of ways, for example: a flange can be provided at each end of the mixing device 8 (one of the flanges 16 is shown in Figure 8), each corresponding to The flange sealing connection on the inlet line (as shown in Figure 8, the flange 16 at one end of the mixing device is sealingly connected to the flange 17 on the inlet line 18); the other end of the inlet line 18 is flanged Disks 19 and 20 are connected to the inlet end 21 of the hydrogenation reactor 9.
- the invention will be described in detail below with reference to examples and comparative examples.
- the bromine index was determined by potentiometric titration in the following examples and comparative examples.
- the average pore size was determined by scanning electron microscopy in the following examples and comparative examples.
- Examples 1-6 are used to illustrate the reforming oil hydrotreating process according to the present invention.
- the catalytic reforming mixture outputted from the reforming reactor is injected into a reforming product gas-liquid separation tank for gas-liquid separation, and reforming oil is obtained from the bottom of the separation tank.
- the temperature in the separation tank was 40 ° C and the pressure was 0.7 MPa; based on the total amount of the reformed oil obtained, the reformed oil contained 0.015 wt% of dissolved hydrogen.
- the hydrogen-reformed oil is sent to a tubular fixed-bed reactor through a pipe having an inner diameter of 40 mm (the inner diameter of the tubular reactor is 65 mm, the aspect ratio is 30; and the catalyst reactor is provided with a catalyst bed layer, The catalyst bed had an aspect ratio of 25) and was contacted with a catalyst having catalytic hydrogenation under the conditions shown in Table 1.
- Table 1 The aromatic hydrocarbon content of the obtained hydrogenated product and the bromine index are shown in Table 2.
- the mixing device comprises a pipe formed of a porous material (commercially available from Beijing Zhongtianyuan Environmental Engineering Co., Ltd., the outer diameter is 25.4 mm, the cross section of the pipe is as shown in Fig. 4, and 19 liquid channels are uniformly distributed, each liquid
- the inner diameter of the channel is 3.3 mm
- the average pore diameter of the pores in the tube wall is 50 nm
- the pore diameter in the range of 50-55 nm accounts for 95% of the total pores
- the porosity is 20%
- the temperature is 160 ° C and the pressure is 1.8 MPa;
- the catalyst used for catalytic hydrogenation is a catalyst commercially available from Sinopec Fushun Petrochemical Research Institute under the designation HDO-18.
- the reforming oil was hydrotreated in the same manner as in Example 1, except that no hydrogen was introduced into the gas passage of the hydrogen mixing device (that is, no supplementary hydrogen was injected into the reforming oil).
- the aromatics content of the hydrogenation product and the bromine index are shown in Table 2.
- the reformed oil was hydrotreated in the same manner as in Example 1, except that:
- the temperature in the gas-liquid separation tank is 40 ° C, and the pressure is 0.3 MPa, based on the total amount of the reformed oil obtained, the reformed oil contains 0.01% by weight of dissolved hydrogen;
- the mixing device includes a membrane tube (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd., the outer diameter is
- the average pore diameter of the pores on the substrate is ⁇
- the average pore diameter of the pores on the porous membrane is 250 nm
- the pore diameter of the pores in the range of 250-260 nm accounts for 95% of the total pores
- the porosity is 25%.
- the temperature is 150 ° C and the pressure is 1.5 MPa; the chemical hydrogen consumption of 100 parts by weight of the feedstock oil is 0.03 parts by weight, and under the hydrorefining conditions shown in Table 1, the hydrogen is in the feedstock oil.
- the saturated dissolved amount is 0.025% by weight; the hydrogen injection rate is 2180g_h- ⁇ m- 2 , the hydrogen injection rate (in g_h-m- 2 ) and the ratio of the feedstock oil flow rate (in kg ⁇ m- 2 )
- the catalyst is commercially available from Sinopec Fushun Petrochemical Research Institute under the designation HDO-18.
- the reformed oil was hydrotreated in the same manner as in Example 1, except that:
- the mixing device comprises a membrane tube (commercially available from Beijing Zhongtianyuan Environmental Engineering Co., Ltd., the outer diameter is 25.4 mm, the average pore diameter of the pores on the substrate is ⁇ , and the average pore diameter of the pores on the porous membrane is 500 nm.
- the cross section of the pipe is shown in Figure 4. There are 19 liquid channels evenly distributed, and the inner diameter of each liquid channel is 3.3mm.
- the outer wall and shell of the membrane tube The space formed by the inner wall is a gas passage.
- Example 6 The reformed oil was hydrotreated in the same manner as in Example 4 except that in the mixing apparatus, the pores on the tube wall of the pipe formed of the porous material had an average pore diameter of 5 ⁇ (commercially available from Beijing Zhongtianyuan). Environmental Engineering Co., Ltd.) The aromatic hydrocarbon content and bromine index of the obtained hydrogenated product are shown in Table 2.
- Example 6 The aromatic hydrocarbon content and bromine index of the obtained hydrogenated product are shown in Table 2.
- the reformed oil was hydrotreated in the same manner as in Example 4 except that the fixed bed reactor was a fixed bed reactor (having an inner diameter of 1600 mm, a catalyst bed in the reactor, and a catalyst).
- the aspect ratio of the charge was 6.0), and the properties of the obtained hydrogenated product are shown in Table 2.
- Example 2 show that the reformed produced oil can be hydrotreated efficiently by using the dissolved hydrogen in the reforming oil.
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- Oil, Petroleum & Natural Gas (AREA)
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RU2015114769A RU2609780C2 (ru) | 2012-09-21 | 2013-09-18 | Способ и устройство для гидрообработки риформата |
EP13840101.3A EP2899253B1 (en) | 2012-09-21 | 2013-09-18 | Reformate hydrotreatment method |
SG11201502230YA SG11201502230YA (en) | 2012-09-21 | 2013-09-18 | Reformate hydrotreatment method |
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CN112705120B (zh) * | 2019-10-25 | 2022-07-08 | 中国石油化工股份有限公司 | 一种重质油加工装置及加工方法 |
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US20150247098A1 (en) | 2015-09-03 |
CN103666544B (zh) | 2016-04-06 |
EP2899253A4 (en) | 2016-06-29 |
KR20150058473A (ko) | 2015-05-28 |
SG10201702255YA (en) | 2017-04-27 |
SG11201502230YA (en) | 2015-05-28 |
EP2899253A1 (en) | 2015-07-29 |
US9879186B2 (en) | 2018-01-30 |
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KR101804488B1 (ko) | 2017-12-04 |
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