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CN107033951B - A kind of method of nitride in removing fuel oil - Google Patents

A kind of method of nitride in removing fuel oil Download PDF

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Publication number
CN107033951B
CN107033951B CN201710494037.8A CN201710494037A CN107033951B CN 107033951 B CN107033951 B CN 107033951B CN 201710494037 A CN201710494037 A CN 201710494037A CN 107033951 B CN107033951 B CN 107033951B
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oil
ionic liquid
reaction kettle
simulation
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CN107033951A (en
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马晓宁
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Xuzhou Jie Jie Environmental Protection Technology Co Ltd
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Xuzhou Jie Jie Environmental Protection Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G53/00Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
    • C10G53/02Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/06Metal salts, or metal salts deposited on a carrier
    • C10G29/12Halides
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/20Organic compounds not containing metal atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/20Organic compounds not containing metal atoms
    • C10G29/26Halogenated hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G2300/00Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10Feedstock materials
    • C10G2300/1037Hydrocarbon fractions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G2300/00Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20Characteristics of the feedstock or the products
    • C10G2300/201Impurities
    • C10G2300/202Heteroatoms content, i.e. S, N, O, P

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

The invention discloses a kind of methods of nitride in removing fuel oil, it comprises the following steps that: preparing fuel oil, measure initial N contents, prepare simulation oil, prepare denitrifier, simulation oil denitrogenation, feedstock oil denitrogenation and recycling ionic liquid, first by synthesizing simulation oil identical with nitrogen content in feedstock oil, denitrogenation processing is carried out to simulation oil respectively using different kinds of ions liquid, to select two kinds of best ionic liquids of denitrification effect, for subsequent feedstock oil denitrogenation, according to the feedstock oil of different nitrogen contents, different ionic liquids can targetedly be selected, combine with iron chloride and denitrogenation is carried out to oil product, denitrification effect can be improved.The method denitrification effect of nitride is ideal in removing fuel oil of the invention, reaction condition is mild, equipment is simple, and no pollution to the environment, prospects for commercial application are very wide.

Description

A kind of method of nitride in removing fuel oil
Technical field
The invention belongs to oil denitrification technical fields, and in particular to a method of nitride in removing fuel oil.
Background technique
Shale oil is a kind of unconventional energy resource, stock number very abundant and reserve distribution concentration, has to be used as and takes over the energy Great potential and advantage, be presently believed to be former oil and gas and preferably supplement the energy.The midbarrel of shale oil Be after processed produce the good raw material of diesel oil, but impurity therein especially nitride can following process to diesel oil distillate and Storage is brought a negative impact, and can cause environmental pollution, so in order to improve the quality of diesel oil, it is necessary to be removed therein nitrogenous Compound.Shale oil denitrogenation method mainly has hydrodenitrogeneration technology and Non-hydrogenation technology technology, traditional hydrodenitrogeneration method at present Harsher reaction condition is needed, and nitride can reduce the activity of catalyst, influences its denitrification effect.
Summary of the invention
To solve the deficiencies in the prior art, ideal, reaction condition temperature that the purpose of the present invention is to provide a kind of denitrification effects With equipment is simple, in removing fuel oil of no pollution to the environment nitride method.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of method of nitride in removing fuel oil, comprises the following steps that:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 50 ~ 60 DEG C, to shale Oil carries out preheating until shale oil is added appropriate zeolite, carries out vacuum distillation processing, resulting diesel oil distillate conduct in flowable state The feedstock oil of denitrogenation;
S2, measurement initial N contents: it takes appropriate feedstock oil to mix with solvent by quality 1:19, measures in feedstock oil respectively Total nitrogen and basic nitrogen;
S3, preparation simulation oil: by pyridinium dissolution in dimethylbenzene, n-dodecane and hexadecane, being made simulation oil, In, pyridine, dimethylbenzene, n-dodecane and hexadecane quality proportioning according to basic nitrogen in simulation oil it is identical as feedstock oil come It calculates;
S4, prepare denitrifier: preparing ionic liquid [C2mim]Br、[C4mim]Br、[C2mim]Cl、[C4mim]Cl、 [C2mim]HSO4、[C4mim]HSO4、[C2mim]Cl/ZnCl2[Hnmp] H2PO4, spare;
S5, simulation oil denitrogenation: appropriate above-mentioned various ionic liquids are taken, denitrogenation processing is carried out to simulation oil respectively;It will simulation A small amount of deionized water is added by being put in beaker after weighing in oily and above-mentioned ionic liquid, places the beaker temperature constant magnetic stirring On device, adjusting blender temperature is 30 ~ 70 DEG C, after persistently stirring 10 ~ 30min, is taken out, 1 ~ 2h of standing, after liquid layered, is taken Layer simulation oil measures basic nitrogen therein;The denitrification percent for calculating above-mentioned various ionic liquids selects highest two kinds of denitrification percent Ionic liquid, respectively ionic liquid I and ionic liquid II;
S6, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 30 ~ 40 DEG C, is slowly added to chlorine Change iron, persistently stirs 5 ~ 10min;Adjusting temperature of reaction kettle is 40 ~ 60 DEG C, is slowly added to ionic liquid I, under constant stirring, A small amount of deionized water and bromoethane is added, persistently stirs 10 ~ 20min;Adjust temperature of reaction kettle be 60 ~ 80 DEG C, be slowly added to from A small amount of deionized water, 10 ~ 20min is added under constant stirring in sub- liquid;After reaction, it takes out and stands 2 ~ 3h, mixing There is obvious lamination in liquid, takes upper layer diesel oil measurement basic nitrogen and total nitrogen content, calculates denitrification percent, and isolate lower leafing Sub- liquid level;
S7, recycling ionic liquid: ionic liquid layer is placed in tiered container, is added and the isometric extraction of ionic liquid Taking agent washing ionic liquid three times, layering obtains mixed ionic liquid, and mixed ionic liquid is put in drying box, dry 8 ~ 10h obtains recycling ionic liquid.
Preferably, in abovementioned steps S1, reaction kettle inner tip side wall is equipped with support plate, and support plate has 2 ~ 3, and edge The circumferencial direction of reaction kettle side wall is uniformly arranged, and baffle has been bolted on the outside of support plate, is parched if baffle is equipped with Stomata, the diameter of air hole are 3 ~ 5mm.
More preferably, in abovementioned steps S2, using the total nitrogen content in TN-5000 sulphur/apparatus for nitrogen examination measurement feedstock oil, and By People's Republic of China's SH/T0162-92 standard test basic nitrogen therein.
It is highly preferred that solvent is dimethylbenzene or isooctane in abovementioned steps S2.
It is further preferred that in above mentioned step S3, it is specific to prepare simulation oil step are as follows: pyridine is divided into 3 parts by quality, by two Toluene is put in beaker, and is placed the beaker in constant temperature blender with magnetic force, and adjusting blender temperature is 45 ~ 50 DEG C, is slowly added to First part of pyridine, and after being stirred continuously 15 ~ 25min;Adjusting blender temperature is 55 ~ 60 DEG C, and n-dodecane and positive 16 is added Alkane, and it is slowly added to second part of pyridine, it is stirred continuously 20 ~ 30min;Adjusting blender temperature is 75 ~ 80 DEG C, is slow added into the Three parts of pyridines persistently stir 25 ~ 35min, and reaction terminates to stand, cooling, obtain simulation oil.
Specifically, in abovementioned steps S5, the mass ratio of simulation oil, ionic liquid and deionized water is (30 ~ 50): (2 ~ 3): (4 ~ 6).
Preferably, in abovementioned steps S6, feedstock oil, iron chloride, ionic liquid I, ionic liquid II, bromoethane and deionization The mass ratio of water is (80 ~ 90): (0.2 ~ 0.6): (0.7 ~ 0.9): (0.7 ~ 0.9): (0.3 ~ 0.5): (0.6 ~ 0.8).
More preferably, it is additionally provided with feedstock oil pre-treatment step before abovementioned steps S6, feedstock oil is placed in reaction kettle, adjusted Saving temperature of reaction kettle is 50 ~ 70 DEG C, and denitrifier is added, and wherein the mass ratio of feedstock oil and denitrifier is (65 ~ 75): (2 ~ 3) are held 15 ~ 25min of continuous stirring isolates upper layer feedstock oil, for use after placing 2 ~ 3h;The denitrifier is mixed for what is recycled in step S7 Close ionic liquid.
It is highly preferred that extractant is one of distilled water, petroleum ether, ether or carbon tetrachloride in abovementioned steps S7.
The invention has the beneficial effects that:
(1) the method denitrification effect of nitride is ideal in removing fuel oil of the invention, reaction condition is mild, equipment is simple It is single, and no pollution to the environment, prospects for commercial application are very wide;
(2) first by synthesizing simulation oil identical with nitrogen content in feedstock oil, using different kinds of ions liquid respectively to mould Quasi- oil carries out denitrogenation processing, to select two kinds of best ionic liquids of denitrification effect, subsequent feedstock oil denitrogenation is used for, according to difference The feedstock oil of nitrogen content can select different ionic liquids, targetedly to improve denitrification effect;
(3) solvent is done using dimethylbenzene, n-dodecane and hexadecane mixing, pyridine can be made preferably to dissolve;Pyridine By being repeatedly added portionwise into solvent, pyridine can be made sufficiently to dissolve, the nitrogen content and original in simulation oil to guarantee synthesis Material oil is consistent;
(4) iron chloride and two kinds of ionic liquid combined denitrifications are selected, and promotor deionized water and bromoethane is added, can be mentioned High denitrification percent can not only effectively remove basic nitrogen compound therein, can also remove certain non basic nitrogen compound and sulfide, The quality of oil product is improved well;
(5) mixed ionic liquid after the recovery can be used for the pretreatment of feedstock oil, carry out preliminary denitrogenation processing to feedstock oil, Removing part of nitride reduces production cost to reduce the dosage of two kinds of ionic liquids in subsequent denitrification reaction;
(6) setting of reaction kettle Internal baffle can block top duct there is a phenomenon where bumping to avoid oil product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of reaction kettle in the embodiment of the present invention 1.
The meaning of appended drawing reference in figure: 1, reaction kettle, 2, support plate, 3, baffle.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of method of nitride in removing fuel oil, comprises the following steps that:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 50 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
Referring to Fig. 1,1 inner tip side wall of reaction kettle is equipped with support plate 2, and support plate 2 has 2 ~ 3, and along 1 side of reaction kettle The circumferencial direction of wall is uniformly arranged, and the outside of support plate 2 has been bolted baffle 3, and baffle 3 is equipped with several air holes, The diameter of air hole is 3 ~ 5mm;
S2, measurement initial N contents: appropriate feedstock oil is taken to mix with dimethylbenzene by quality 1:19, using TN-5000 sulphur/nitrogen Analyzer measures the total nitrogen content in feedstock oil, and presses People's Republic of China (PRC) SH/T0162-92 standard test alkali nitrogen therein Content;
S3, preparation simulation oil: taking appropriate pyridine, and it be divided into 3 parts by quality, dimethylbenzene is put in beaker, and will Beaker is placed in constant temperature blender with magnetic force, and adjusting blender temperature is 45 DEG C, is slowly added to first part of pyridine, and be stirred continuously After 15min;Adjusting blender temperature is 55 DEG C, n-dodecane and hexadecane is added, and be slowly added to second part of pyridine, constantly Stir 20min;Adjusting blender temperature is 75 DEG C, is slow added into third part pyridine, persistently stirs 25min, and reaction terminates quiet It sets, it is cooling, obtain simulation oil;Wherein, the quality proportioning of pyridine, dimethylbenzene, n-dodecane and hexadecane is according in simulation oil Basic nitrogen is as feedstock oil identical to be calculated;
S4, prepare denitrifier: preparing ionic liquid [C2mim]Br、[C4mim]Br、[C2mim]Cl、[C4mim]Cl、 [C2mim]HSO4、[C4mim]HSO4、[C2mim]Cl/ZnCl2[Hnmp] H2PO4, spare;
S5, simulation oil denitrogenation: appropriate above-mentioned various ionic liquids are taken, denitrogenation processing is carried out to simulation oil respectively;It will simulation A small amount of deionized water is added by being put in beaker after weighing in oily and above-mentioned ionic liquid, simulation oil, ionic liquid and deionization The mass ratio of water is 30:2:4;It places the beaker in constant temperature blender with magnetic force, adjusting blender temperature is 30 DEG C, lasting to stir It after 10min, takes out, standing 1h, after liquid layered, upper layer simulation oil is taken to measure basic nitrogen therein;Calculate it is above-mentioned it is various from The denitrification percent of sub- liquid selects the highest two kinds of ionic liquids of denitrification percent, respectively [C4Mim] Cl and [C2mim]HSO4
S6 ', feedstock oil pretreatment: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 50 DEG C, and denitrogenation is added Agent, wherein the mass ratio of feedstock oil and denitrifier is 65:2, persistently stirs 15min, after placing 2h, isolates upper layer feedstock oil, For use;Denitrifier is the mixed ionic liquid recycled in step S7;
S6, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 30 DEG C, is slowly added to chlorination Iron persistently stirs 5min;Adjusting temperature of reaction kettle is 40 DEG C, is slowly added to [C4Mim] Cl, under constant stirring, addition is a small amount of Deionized water and bromoethane, persistently stir 10min;Adjusting temperature of reaction kettle is 60 DEG C, is slowly added to [C2mim]HSO4, continuous Under stirring, a small amount of deionized water, 10min is added;After reaction, it takes out and stands 2h, mixed liquor obvious lamination occurs, takes Upper layer diesel oil measures basic nitrogen and total nitrogen content, calculates denitrification percent, and isolate lower layer's ionic liquid layer;Feedstock oil, chlorination Iron, [C4mim]Cl、[C2mim]HSO4, bromoethane and deionized water mass ratio be 80:0.2:0.7:0.7:0.3:0.6;
S7, recycling ionic liquid: ionic liquid layer is placed in tiered container, is added and the isometric stone of ionic liquid Three times, layering obtains mixed ionic liquid to oily ether washing ionic liquid, and mixed ionic liquid is put in drying box, dry 8h, Obtain recycling ionic liquid.
Embodiment 2
The present embodiment is identical as the method and step of embodiment 1, and specific difference is concrete technology condition and reagent difference, packet Include following processing step:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 60 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
S2, measurement initial N contents: it takes appropriate feedstock oil to mix with isooctane by quality 1:19, measures in feedstock oil respectively Total nitrogen and basic nitrogen;
S3, preparation simulation oil: taking appropriate pyridine, and it be divided into 3 parts by quality, dimethylbenzene is put in beaker, and will Beaker is placed in constant temperature blender with magnetic force, and adjusting blender temperature is 50 DEG C, is slowly added to first part of pyridine, and be stirred continuously After 25min;Adjusting blender temperature is 60 DEG C, n-dodecane and hexadecane is added, and be slowly added to second part of pyridine, constantly Stir 30min;Adjusting blender temperature is 80 DEG C, is slow added into third part pyridine, persistently stirs 35min, and reaction terminates quiet It sets, it is cooling, obtain simulation oil;Wherein, the quality proportioning of pyridine, dimethylbenzene, n-dodecane and hexadecane is according in simulation oil Basic nitrogen is as feedstock oil identical to be calculated;
S4, prepare denitrifier: preparing ionic liquid [C2mim]Br、[C4mim]Br、[C2mim]Cl、[C4mim]Cl、 [C2mim]HSO4、[C4mim]HSO4、[C2mim]Cl/ZnCl2[Hnmp] H2PO4, spare;
S5, simulation oil denitrogenation: appropriate above-mentioned various ionic liquids are taken, denitrogenation processing is carried out to simulation oil respectively;It will simulation A small amount of deionized water is added by being put in beaker after weighing in oily and above-mentioned ionic liquid, simulation oil, ionic liquid and deionization The mass ratio of water is 50:3:6;It places the beaker in constant temperature blender with magnetic force, adjusting blender temperature is 70 DEG C, lasting to stir It after 30min, takes out, 1 ~ 2h of standing, after liquid layered, upper layer simulation oil is taken to measure basic nitrogen therein;It calculates above-mentioned various The denitrification percent of ionic liquid selects the highest two kinds of ionic liquids of denitrification percent, respectively [C4mim]HSO4[Hnmp] H2PO4
S6 ', feedstock oil pretreatment: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 70 DEG C, and denitrogenation is added Agent, wherein the mass ratio of feedstock oil and denitrifier is 75:3, persistently stirs 25min, after placing 3h, isolates upper layer feedstock oil, For use;Denitrifier is the mixed ionic liquid recycled in step S7;
S6, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 40 DEG C, is slowly added to chlorination Iron persistently stirs 10min;Adjusting temperature of reaction kettle is 60 DEG C, is slowly added to [C4mim]HSO4, under constant stirring, it is added few Deionized water and bromoethane are measured, 20min is persistently stirred;Adjusting temperature of reaction kettle is 80 DEG C, is slowly added to [Hnmp] H2PO4, not Under disconnected stirring, a small amount of deionized water, 20min is added;After reaction, it taking out and stands 3h, there is obvious lamination in mixed liquor, Upper layer diesel oil measurement basic nitrogen and total nitrogen content are taken, calculates denitrification percent, and isolate lower layer's ionic liquid layer;Wherein, raw material Oil, iron chloride, [C4mim]HSO4、[Hnmp]H2PO4, bromoethane and deionized water mass ratio be 90:0.6:0.9:0.9: 0.5:0.8;
S7, recycling ionic liquid: ionic liquid layer is placed in tiered container, is added and the isometric second of ionic liquid Ether washs ionic liquid three times, and layering obtains mixed ionic liquid, and mixed ionic liquid is put in drying box, and dry 10h is obtained To recycling ionic liquid.
Embodiment 3
The present embodiment is identical as the method and step of embodiment 1, and specific difference is concrete technology condition and reagent difference, packet Include following processing step:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 55 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
S2, measurement initial N contents: it takes appropriate feedstock oil to mix with dimethylbenzene by quality 1:19, measures in feedstock oil respectively Total nitrogen and basic nitrogen;
S3, preparation simulation oil: taking appropriate pyridine, and it be divided into 3 parts by quality, dimethylbenzene is put in beaker, and will Beaker is placed in constant temperature blender with magnetic force, and adjusting blender temperature is 48 DEG C, is slowly added to first part of pyridine, and be stirred continuously After 20min;Adjusting blender temperature is 58 DEG C, n-dodecane and hexadecane is added, and be slowly added to second part of pyridine, constantly Stir 25min;Adjusting blender temperature is 77 DEG C, is slow added into third part pyridine, persistently stirs 30min, and reaction terminates quiet It sets, it is cooling, obtain simulation oil;Wherein, the quality proportioning of pyridine, dimethylbenzene, n-dodecane and hexadecane is according in simulation oil Basic nitrogen is as feedstock oil identical to be calculated;
S4, prepare denitrifier: preparing ionic liquid [C2mim]Br、[C4mim]Br、[C2mim]Cl、[C4mim]Cl、 [C2mim]HSO4、[C4mim]HSO4、[C2mim]Cl/ZnCl2[Hnmp] H2PO4, spare;
S5, simulation oil denitrogenation: appropriate above-mentioned various ionic liquids are taken, denitrogenation processing is carried out to simulation oil respectively;It will simulation A small amount of deionized water is added by being put in beaker after weighing in oily and above-mentioned ionic liquid, simulation oil, ionic liquid and deionization The mass ratio of water is 40:2.5:5, is placed the beaker in constant temperature blender with magnetic force, and adjusting blender temperature is 50 DEG C, lasting to stir It after 20min, takes out, standing 1.5h, after liquid layered, upper layer simulation oil is taken to measure basic nitrogen therein;It calculates above-mentioned various The denitrification percent of ionic liquid selects the highest two kinds of ionic liquids of denitrification percent, respectively [C2mim]HSO4[C2mim]Cl/ ZnCl2
S6 ', feedstock oil pretreatment: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 60 DEG C, and denitrogenation is added Agent, wherein the mass ratio of feedstock oil and denitrifier is 70:2.5, persistently stirs 20min, after placing 2.5h, isolates upper layer raw material Oil, for use;Denitrifier is the mixed ionic liquid recycled in step S7;
S6, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 35 DEG C, is slowly added to chlorination Iron persistently stirs 8min;Adjusting temperature of reaction kettle is 50 DEG C, is slowly added to [C2mim]HSO4, under constant stirring, it is added a small amount of Deionized water and bromoethane, persistently stir 15min;Adjusting temperature of reaction kettle is 70 DEG C, is slowly added to [C2mim]Cl/ZnCl2, It is stirred continuously down, a small amount of deionized water, 15min is added;After reaction, it takes out and stands 2.5h, obvious layering occurs in mixed liquor Phenomenon takes upper layer diesel oil measurement basic nitrogen and total nitrogen content, calculates denitrification percent, and isolate lower layer's ionic liquid layer;Raw material Oil, iron chloride, [C2mim]HSO4、[C2mim]Cl/ZnCl2, bromoethane and deionized water mass ratio be 85:0.4:0.8: 0.8:0.4:0.7;
S7, recycling ionic liquid: ionic liquid layer is placed in tiered container, and four isometric with ionic liquid are added Chlorination carbon washs ionic liquid three times, and layering obtains mixed ionic liquid, and mixed ionic liquid is put in drying box, dry 9h obtains recycling ionic liquid.
Comparative example 1
This comparative example is roughly the same with the nitrogen removal step in embodiment 1, and difference is no simulation oil denitrogenation and denitrifier Difference comprises the following steps that:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 50 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
S2, measurement initial N contents: appropriate feedstock oil is taken to mix with dimethylbenzene by quality 1:19, using TN-5000 sulphur/nitrogen Analyzer measures the total nitrogen content in feedstock oil, and presses People's Republic of China (PRC) SH/T0162-92 standard test alkali nitrogen therein Content;
S3, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 50 DEG C, is slowly added to chlorination Iron, feedstock oil, iron chloride mass ratio be 80:5, persistently stir 2min;After reaction, it takes out and stands 2h, mixed liquor occurs Obvious lamination takes upper layer diesel oil measurement basic nitrogen and total nitrogen content, calculates denitrification percent;
Comparative example 2
This comparative example is roughly the same with the nitrogen removal step in embodiment 1, and difference is no simulation oil denitrogenation and denitrifier Difference comprises the following steps that:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 50 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
S2, measurement initial N contents: appropriate feedstock oil is taken to mix with dimethylbenzene by quality 1:19, using TN-5000 sulphur/nitrogen Analyzer measures the total nitrogen content in feedstock oil, and presses People's Republic of China (PRC) SH/T0162-92 standard test alkali nitrogen therein Content;
S3, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 50 DEG C, is slowly added to [C2mim]HSO4, feedstock oil and [C2mim]HSO4Mass ratio be 80:6, persistently stir 15min, after reaction, take out it is quiet 2.5h is set, there is obvious lamination in mixed liquor, takes upper layer diesel oil measurement basic nitrogen and total nitrogen content, denitrification percent is calculated, and Isolate lower layer's ionic liquid layer.
By detection, in the diesel oil after embodiment 1, embodiment 2,2 denitrogenation processing of embodiment 3, comparative example 1 and comparative example It is as follows: with the property analysis in feedstock oil
As can be seen from the above table, the total nitrogen content and alkali in the diesel oil after 3 denitrogenation of embodiment 1, embodiment 2 and embodiment Nitrogen content is lower than comparative example and comparative example 2, illustrates that the denitrifier in embodiment 1, embodiment 2 and embodiment 3 can be effective Removing shale oil diesel oil distillate in basic nitrogen compound and non basic nitrogen compound, while can also a degree of removing oil product In sulfur-containing compound.By to after feedstock oil and denitrogenation oil product some properties measurement it is found that after denitrogenation the density of oil product and Viscosity all decreases, this illustrates that the oil quality after denitrogenation has obtained good improvement.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiment or examples in can be combined in any suitable manner.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation Technical solution is fallen within the scope of protection of the present invention.

Claims (8)

1. a kind of method of nitride in removing fuel oil, which is characterized in that comprise the following steps that:
S1, prepare fuel oil: appropriate shale oil being taken to be put in reaction kettle, being adjusted to temperature of reaction kettle is 50~60 DEG C, to shale oil Preheating is carried out until shale oil is in flowable state, appropriate zeolite is added, carries out vacuum distillation processing, resulting diesel oil distillate is as de- The feedstock oil of nitrogen;
S2, measurement initial N contents: taking appropriate feedstock oil to mix with solvent by quality 1:19, measures the total nitrogen in feedstock oil respectively And basic nitrogen;
S3, preparation simulation oil: by pyridinium dissolution in dimethylbenzene, n-dodecane and hexadecane, being made simulation oil, specific to prepare Simulation oil step are as follows: pyridine is divided into 3 parts by quality, and dimethylbenzene is put in beaker, and places the beaker constant temperature blender with magnetic force On, adjusting blender temperature is 45~50 DEG C, is slowly added to first part of pyridine, and after being stirred continuously 15~25min;Adjust stirring Device temperature is 55~60 DEG C, n-dodecane and hexadecane is added, and be slowly added to second part of pyridine, it is stirred continuously 20~ 30min;Adjusting blender temperature is 75~80 DEG C, is slow added into third part pyridine, persistently stirs 25~35min, reaction knot Beam is stood, cooling, obtains simulation oil;Wherein, the quality proportioning of pyridine, dimethylbenzene, n-dodecane and hexadecane is according to simulation Basic nitrogen is as feedstock oil identical in oil calculates;
S4, prepare denitrifier: preparing ionic liquid [C2mim]Br、[C4mim]Br、[C2mim]Cl、[C4mim]Cl、[C2mim] HSO4、[C4mim]HSO4、[C2mim]Cl/ZnCl2[Hnmp] H2PO4, spare;
S5, simulation oil denitrogenation: appropriate above-mentioned various ionic liquids are taken, denitrogenation processing is carried out to simulation oil respectively;By simulation oil and A small amount of deionized water is added by being put in beaker after weighing in above-mentioned ionic liquid, places the beaker in constant temperature blender with magnetic force, Adjusting blender temperature is 30~70 DEG C, after persistently stirring 10~30min, is taken out, 1~2h of standing, after liquid layered, takes upper layer Simulation oil measures basic nitrogen therein;The denitrification percent for calculating above-mentioned various ionic liquids, select highest two kinds of denitrification percent from Sub- liquid, respectively ionic liquid I and ionic liquid II;
The pretreatment of S6 ' feedstock oil: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 50~70 DEG C, and denitrifier is added, Wherein the mass ratio of feedstock oil and denitrifier is (65~75): (2~3), persistently stirs 15~25min, after placing 2~3h, point Upper layer feedstock oil is separated out, for use;
S6, feedstock oil denitrogenation: feedstock oil is placed in reaction kettle, and adjusting temperature of reaction kettle is 30~40 DEG C, is slowly added to chlorination Iron persistently stirs 5~10min;Adjusting temperature of reaction kettle is 40~60 DEG C, is slowly added to ionic liquid I, under constant stirring, A small amount of deionized water and bromoethane is added, persistently stirs 10~20min;Adjusting temperature of reaction kettle is 60~80 DEG C, is slowly added to A small amount of deionized water, 10~20min is added under constant stirring in ionic liquid II;After reaction, it takes out and stands 2~3h, There is obvious lamination in mixed liquor, takes upper layer diesel oil measurement basic nitrogen and total nitrogen content, calculates denitrification percent, and isolate down Layer ionic liquid layer;
S7, recycling ionic liquid: ionic liquid layer is placed in tiered container, is added and the isometric extractant of ionic liquid Wash ionic liquid three times, layering obtains mixed ionic liquid, and mixed ionic liquid is put in drying box, dry 8~10h, Obtain recycling ionic liquid.
2. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S1 In, reaction kettle inner tip side wall is equipped with support plate, and support plate has 2~3, and uniform along the circumferencial direction of reaction kettle side wall It is arranged, baffle has been bolted on the outside of the support plate, the baffle is equipped with several air holes, the diameter of air hole For 3~5mm.
3. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S2 In, using the total nitrogen content in TN-5000 sulphur/apparatus for nitrogen examination measurement feedstock oil, and press People's Republic of China (PRC) SH/T0162-92 Standard test basic nitrogen therein.
4. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S2 In, solvent is dimethylbenzene or isooctane.
5. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S5 In, the mass ratio of simulation oil, ionic liquid and deionized water is (30~50): (2~3): (4~6).
6. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S6 In, feedstock oil, iron chloride, ionic liquid I, ionic liquid II, bromoethane and deionized water mass ratio be (80~90): (0.2 ~0.6): (0.7~0.9): (0.7~0.9): (0.3~0.5): (0.6~0.8).
7. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S6 ' In, denitrifier is the mixed ionic liquid recycled in step S7.
8. the method for nitride in a kind of removing fuel oil according to claim 1, which is characterized in that the step S7 In, extractant is one of distilled water, petroleum ether, ether or carbon tetrachloride.
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