CN106675642B - A kind of production method of low-coagulation diesel oil - Google Patents

Abstract

The invention discloses a kind of production method of low-coagulation diesel oil, it is characterised in that including herein below：（1）Poor ignition quality fuel raw material is sufficiently mixed in a mixer with powdered Mo Ni types Hydrobon catalyst, obtains the mixed feeding of catalyst and feedstock oil；（2）Mixed feeding enters fluidized bed reactor with hydrogen from the reactor bottom equipped with Hydrodewaxing catalyst and Mo Co type Hydrobon catalysts, carries out hydrogenation reaction；（3）Logistics, into reactor is stablized, carries out supplement hydrofinishing through being discharged at the top of fluidized bed reactor after reaction comprising powdered Mo Ni Hydrobon catalysts；（4）Step（3）For the material of acquisition through separation of solid and liquid, liquid phase enters fractionating system, obtains low-coagulation diesel oil product.The inventive method carries out the temperature drop of hydro dewaxing process with the temperature rise in hydrogenation process reasonably to combine utilization, and the hot(test)-spot temperature of device is reduced while low condensation point, ultra-low-sulphur diesel is produced, extends service cycle, saves operating cost.

Description

A kind of production method of low-coagulation diesel oil

Technical field

The present invention relates to a kind of production method of low-coagulation diesel oil, especially one kind to be produced high-quality by fluidized bed reactor The production method of low-sulfur, low-coagulation diesel oil.

Background technology

Fuel of the diesel oil as compression ignition engine, risen during the production and living of modernization as non-renewable resources Irreplaceable effect, the delivery vehicles such as automobile, tank, aircraft, tractor, rolling stock or other can be used as The fuel of machinery, it is also possible to generate electricity, warm oneself.According to it using industry and the difference of environment, user is for diesel product Quality requirement also have very big difference, for extremely frigid zones or winter life people for, low freezing point diesel fuel Demand remains high always, and traditional shape slective cracking technique can process the heavy diesel fuel cut of the content of wax, pour point depression amplitude up to 20~ 50 DEG C, while obtaining low freezing point diesel fuel, diesel oil distillate scope can be also widened, improves yield, be to solve low freezing point diesel fuel production The highly useful and advanced technology of problem.

The situation in China is also similar, particularly in recent years, right with the national economic development and the continuous improvement of environmental consciousness In the requirement more and more higher of diesel quality, the popularity rate of diesel refining rises year by year, in addition in northern cold area, except normal to diesel oil Outside the requirement of the refined property of rule, condensation point becomes one of essential requirement index, therefore can improve the production of low-coagulation diesel oil Amount and quality, meet that the market demand has turned into Han Qu oil refining enterprise major issue of interest.And shape slective cracking and combinations thereof work Skill can be used for producing low-sulfur low-coagulation diesel oil, be advantageous to improve oil refining enterprise as one of Main Means for reducing condensation point of diesel oil Economic benefit.

Diesel oil shape slective cracking technology is also known as hydro dewaxing, refers in the presence of hydrogen, and the diesel raw material of the content of wax is led to The bifunctional catalyst surface containing active metal and molecular sieve is crossed, so as to reduce wax molecule content therein.Its principle that dewaxes It is under certain operating conditions, to mix raw material and hydrogen and contacted with Hydrodewaxing catalyst, alkane in raw material, with short It is cracked into small molecule the aromatic hydrocarbons of side chain alkane, the cycloalkane of belt length side chain and belt length side chain grade high condensation point compositional selecting, and Other components do not change substantially, are finally reached the purpose for the condensation point for reducing oil product.Due to its have course of reaction hydrogen consumption compared with It is low, adaptability to raw material is strong, energy consumption is relatively low, technological process is simple, can form and process integration or independently makes with other hydrogenation processes With many advantages, such as, therefore be widely used.The many oil refining enterprise of northern China Han Qu employ this technology at present Produce low-coagulation diesel oil.

CN1257107A describes a kind of method that high-grade low-freezing diesel oil is produced by distillate.This method uses hydrofinishing With hydro dewaxing one-stage serial flow, including two beds of Hydrobon catalyst and Hydrodewaxing catalyst, Hydro dewaxing uses Ni/ZSM-5 catalyst.This method is larger in the temperature drop of Hydrodewaxing catalyst bed, the receipts of diesel oil distillate The raising of rate and depression effeCt is reduced the service life of Hydrodewaxing catalyst by a definite limitation.

CN102051232A describes a kind of method of diesel oil hydrogenation pour point depression, this method by adjust the property of catalyst from And there is the characteristics of diesel oil depression effeCt is good, diesel oil distillate high income, but due to still using hydrofinishing and hydro dewaxing to connect Group technology, between depression effeCt and diesel oil distillate yield contradiction still exist.

CN102453531A describes a kind of method of diesel hydro-pour-reducing, although improving the flat of Hydrodewaxing catalyst Equal reaction temperature, using the temperature rise of refining agent, the utilization rate of pour point depression catalyst is increased, still

The reaction temperature of each bed outlet is still of a relatively high, and the cycle receives certain limitation.

CN01134271.4 discloses a kind of combined hydrogenation method for producing high cetane number, low-coagulation diesel oil.This method is Feedstock oil, hydrogen are first contacted with catalyst for hydro-upgrading or hydrocracking catalyst, reaction effluent without isolation then with Hydrodewaxing catalyst contacts, and reaction effluent enters high-pressure separator through cooling, and the product liquid isolated enters fractionation train System, the gas circulation rich in hydrogen return reactor.This method can improve the Cetane number and drop of diesel oil simultaneously in same covering device The condensation point of low diesel oil, the Cetane number of diesel product improve more than 6 units compared with feedstock oil.

CN99113293.9 discloses a kind of method that high-quality low-coagulation diesel oil with high hexadecane value is produced by distillate.This method Hydro dewaxing is directly connected with hydrofinishing, hydro-upgrading, realizes hydrofinishing-hydro-upgrading-hydro dewaxing-section series connection Flow, using the strong Hydrobon catalyst of anti-coking performance and with relatively strong anti-ammonia, capacity antacid hydro-upgrading and Hydrodewaxing catalyst so that the technique have it is refined/depression effeCt is good, diesel yield is high, adaptability to raw material is strong, diesel oil The characteristics of Cetane number is high, technological process is simple and products scheme is flexible.

The content of the invention

The problem of existing for prior art, the present invention provide a kind of production method of low-coagulation diesel oil.The inventive method is filled Divide the characteristics of utilizing fluidized bed reactor back-mixing, the temperature rise in the temperature drop and hydrogenation process of hydro dewaxing process is carried out rational Combination is utilized, and the hot(test)-spot temperature of device is reduced while low condensation point, ultra-low-sulphur diesel is produced, extends service cycle；In addition The combustion gas loss of the consumption or heating furnace of cold hydrogen is reduced, saves operating cost.

A kind of production method of low-coagulation diesel oil provided by the invention, including herein below：

（1）Poor ignition quality fuel raw material is sufficiently mixed in a mixer with powdered Mo-Ni types Hydrobon catalyst, is urged The mixed feeding of agent and feedstock oil；

（2）Mixed feeding and hydrogen are anti-from mixed packing Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts Answer device bottom to enter fluidized bed reactor, carry out hydrogenation reaction；Wherein described hydrogenation reaction includes hydro dewaxing and reacts and add Hydrogen refining reaction；

（3）Logistics is entered through being discharged at the top of fluidized bed reactor after reaction comprising powdered Mo-Ni Hydrobon catalysts Enter stable reactor, carry out supplement hydrofinishing；

（4）Step（3）For the material of acquisition through separation of solid and liquid, liquid phase enters fractionating system, obtains high-quality low-sulfur, low-coagulation diesel oil Product.

In the inventive method, described poor ignition quality fuel raw material is high freezing point diesel fuel for conventional pour point depression raw material inferior, condensation point Typically all more than 0 DEG C, preferably condensation point is more than 5 DEG C.Can be processing naphthene base crude, intermediate base crude or paraffinic base crude oil Obtained various straight-run diesel oils, secondary processing diesel oil（Coker gas oil, catalytic diesel oil etc.）In one or several kinds, preferably process The said components that paraffinic base crude oil obtains.The diesel raw material does generally 350~440 DEG C, preferably 370~400 DEG C.

In production method of the present invention, described powdered Mo-Ni types Hydrobon catalyst can be that this area generally makes Powdered Hydrobon catalyst, its granularity are generally 50~2000 μm, preferably 500~1500 μm, described powder Shape catalyst can flow with oil product.On the basis of the weight of catalyst, Mo is calculated as 8wt%~28wt% with oxide, and Ni is with oxygen Compound is calculated as 2wt%~15wt%, and surplus is aluminum oxide or silicon-containing alumina carrier.

Production method step of the present invention（1）Mixed feeding in, powdered Mo-Ni types Hydrobon catalyst addition with Metal is calculated as 20~200 μ g/g.

In production method of the present invention, described blender can use multistage shear pump, can also use static mixer, The mixing arrangement commonly used in the art such as ultrasonic oscillator.

In the inventive method, described Hydrodewaxing catalyst is the conventional pour point depression catalyst in this area.Described urges Agent includes silica-alumina supports and hydrogenation active metals containing shape slective cracking molecular sieve.Described shape slective cracking molecular sieve is Hydrogen Molecular sieve, the molecular sieve can be selected from Hydrogen ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, ZSM-35 and ZSM-38 One or more in molecular sieve, preferably ZSM-5 molecular sieve；The silica alumina ratio of the shape slective cracking molecular sieve is generally 10~ 150, preferably 20~120.Hydrogenation active metals described in Hydrodewaxing catalyst can be in the periodic table of elements VIII and/or group vi metallic element, wherein group VIII active metal can be Ni and/or Co, group vi active metal It is W and/or Mo.On the basis of the weight of catalyst, hydrogenation active metal component contains using the content that oxide is counted as 10%~30% It is 70%~90% to have shape slective cracking molecular sieve silica-alumina supports content, and wherein shape slective cracking molecular sieve content in silica-alumina supports is 10%~40%, remaining is aluminum oxide.Described Hydrodewaxing catalyst can select existing various commercial catalysts, such as comfort Along Petroleum Chemical Engineering Institute（FRIPP）The Hydrodewaxing catalysts such as FDW-1, FDW-3 of development；It can also press as needed It is prepared by the general knowledge of this area, for example, be referred to CN1952074A, CN1352231A, CN101143333A, Content disclosed in CN102451748A prepares satisfactory Hydrodewaxing catalyst.

Mo-Co types Hydrobon catalyst described in the inventive method is the conventional catalyst in this area, is boiled to coordinate The fluid form of bed is risen, catalyst appearance is spherical, and its catalyst composition and property are developed with Fushun Petrochemical Research Institute and opened The FHUDS-5 of hair is consistent.

In production method of the present invention, in described fluidized bed reactor, powdered Mo-Ni types Hydrobon catalyst is with facing The volume ratio of hydrogen pour point depression catalyst and Mo-Co type Hydrobon catalysts is 1：10~10：1, preferably 1：5~5：1.Wherein face hydrogen The volume ratio of pour point depression catalyst and Mo-Co type Hydrobon catalysts is 1：5~5：1, preferably 1：3~3：1.

In production method of the present invention, the hydrogenation conditions in described fluidized bed reactor are：Reaction pressure 6.0 ~ 30.0MPa, reaction temperature are 270 ~ 500 DEG C, and air speed is 0.1 ~ 5.0h^-1, hydrogen to oil volume ratio 400：1~2000：1.

In production method of the present invention, in boiling bed hydrogenation reactor, diesel raw material, hydrogen and powdered Mo-Ni types add Hydrogen catalyst for refining, Mo-Co types Hydrobon catalyst and Hydrodewaxing catalyst contact, carry out hydrodesulfurization, denitrogenation, aromatic hydrocarbons Saturation and pour point depression reaction etc..

In production method of the present invention, described stable reactor is used for the post-refining of upper reaction member generation oil, by It is selectively strong to linear paraffin hydrocracking in the characteristics of Hydrodewaxing catalyst, and the hydrocracking processes of linear paraffin are abided by Carbonium ion reaction mechanism is followed, during the course of the reaction the unsaturated hydro carbons such as generating portion alkene, reduce the stability of oil product.This Invention makes full use of the hydrogen partial dissolved in the reaction heat and generation oil of last action unit, is mended in reactor is stablized Hydrofinishing is filled, while unsaturated hydro carbons is removed, further reduces the sulfur content of oil product.

In production method of the present invention, described stable reactor exit sets separating and filtering equipment, adds for powdered The separation of solid and liquid of hydrogen catalyst for refining and generation oil product, the solid phase powder shape Hydrobon catalyst for separating acquisition recycle.

In production method of the present invention, described fractionating system is conventional oil product separation fractionation well known to those skilled in the art System, for obtaining the purpose product of appropriate cut.

Compared with prior art, the inventive method has advantages below：

1st, the present invention makes full use of back-mixing " boiling " feature of fluidized bed reactor and the heat release effect of hydrofining reaction The endothermic effect that should be reacted with hydro dewaxing, realizes the comprehensive utilization of course of reaction heat, at utmost reduces temperature rise and temperature Effect is dropped so that isothermal operation is realized in hydrocracking pretreatment reaction, so as to improve hydro-upgrading depression effeCt, can both ensure bavin The quality and yield of oil, the depression effeCt achieved again.

2nd, the present invention makes full use of the high hydrodenitrogenationactivity activity of Mo-Ni type Hydrobon catalysts, Mo-Co type hydrofinishings to urge The strong hydrogen sulfide tolerance of agent, the coupling advantage of catalyst can be given full play to, effectively reduce nitride to transalkylation desulfurization The inhibitory action of reaction, realize 4,6-DMDBT efficient removal.

3rd, temperature and the hydrogen partial that wherein dissolves of the present invention using fluidized bed reactor reaction effluent, it is and powdered Hydrobon catalyst carries out supplement hydrofinishing in reactor is stablized, and reduces unsaturated hydrocarbons content and sulphur in generation oil product Content, improves the stability and quality of diesel product, while improves the utilization rate of hydrogen resources.

4th, the present invention is by the motion violent in reactor of reactant, from part by the high temperature dot of device and low temperature point Effectively eliminate, reduce the hot(test)-spot temperature of device, extend the service life of catalyst.

5th, the powdered Hydrobon catalyst in the present invention travels up to fluidized bed reactor without catalysis with generation oil The fluid zone of agent, the polycondensation coking reaction of area's liquid under the high temperature conditions in the presence of without Hydrodewaxing catalyst can be prevented Generation.

Brief description of the drawings

Fig. 1 is a kind of schematic flow sheet of the production method of low-coagulation diesel oil of the present invention.

Embodiment

A kind of production method of low-coagulation diesel oil of the present invention is described in detail below in conjunction with the accompanying drawings.

As shown in figure 1, the low-coagulation diesel oil production method flow of the present invention is as follows：By poor ignition quality fuel 1 and powdered Mo-Ni types Hydrobon catalyst（Including supplementing new agent 2 and recycling catalyst 12）It is sufficiently mixed in blender 3, obtains uniform charging 4, enter fluidized bed reactor through delivery pump, high pressure hydrogen 7 is entered in a manner of upper feeding from the bottom of fluidized bed reactor 5 to be equipped with The fluidized bed reactor of Hydrodewaxing catalyst 6 and Mo-Co types Hydrobon catalyst 7 makes catalyst keep boiling-like, suitable Under suitable reaction condition, with Hydrodewaxing catalyst and powdered Mo-Ni types Hydrobon catalyst, Mo-Co type hydrofinishings Catalyst contacts, and carries out catalytic hydrogenation reaction, and reacted logistics 9 is discharged into stable reactor 10 at the top of reactor, Carry out supplement hydrofinishing using the hydrogen partial and logistics self heat that wherein dissolve, by separator 11 will generate oil 12 with Powdered Hydrobon catalyst 13 separates, and powdered Hydrobon catalyst recycles, and generates oil and enters separation fractionation train System 14, fractionates out gas, light distillate and high-grade low-freezing diesel product 15.

The low-coagulation diesel oil production method of the present invention is further described followed by specific embodiment.

Embodiment 1~5

The present embodiment is to be hydrogenated with using Hydrodewaxing catalyst, Mo-Co types Hydrobon catalyst and powdered Mo-Ni types The boiling bed hydrogenation experiment of catalyst for refining.Concrete operations flow is shown in accompanying drawing 1.Powdered Mo-Ni types hydrogenation in embodiment 1~2 Catalyst for refining is 1 with the volume ratio of Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts:8, Hydrodewaxing catalyst Volume ratio with Mo-Co type Hydrobon catalysts is 4:1；Powdered Mo-Ni types Hydrobon catalyst in embodiment 3~4 It is 9 with the volume ratio of Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts:1.Wherein Hydrodewaxing catalyst and Mo- The volume ratio of Co type Hydrobon catalysts is 1:5.Powdered Mo-Ni types Hydrobon catalyst is with facing hydrogen drop in embodiment 5 The volume ratio of solidifying catalyst and Mo-Co type Hydrobon catalysts is 1:1.Wherein Hydrodewaxing catalyst and Mo-Co types hydrogenation The volume ratio of catalyst for refining is 1:2.Poor ignition quality fuel and powdered Mo-Ni types Hydrobon catalyst is abundant in a mixer Mixing, uniform charging is obtained, enters fluidized bed reactor through delivery pump, high pressure hydrogen is anti-from ebullated bed in a manner of upper feeding Answering device bottom to enter the fluidized bed reactor equipped with Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts protects catalyst Boiling-like is held, under suitable reaction condition, while and/or is successively catalyzed with Hydrodewaxing catalyst, the hydrofinishing of Mo-Co types Agent and the contact of powdered Mo-Ni types Hydrobon catalyst, carry out catalytic hydrogenation reaction, reacted logistics is from the top of reactor Portion is discharged into stable reactor, and supplement hydrofinishing is carried out using the hydrogen partial of dissolving and the self heat of material, by Separator will generate it is oily separated with powdered Mo-Ni types Hydrobon catalyst, powdered Mo-Ni types Hydrobon catalyst follows Ring uses, and generates oil and enters separation fractionating system, fractionates out gas, light distillate and high-grade low-freezing diesel product.In embodiment The Hydrodewaxing catalyst used is the spheric catalyst of special preparation, and the catalyst component property is ground with Fushun petrochemical industry The commercial catalyst FDW-3 for studying carefully institute's development and production is consistent.The Mo-Co types Hydrobon catalyst used is spherical for special preparation Catalyst, the catalyst component property are consistent with the commercial catalyst FHUDS-5 of Fushun Petrochemical Research Institute's development and production. The powdered Mo-Ni types catalyst used, its granularity are 1000~1200 μm, and active component is contained in catalyst（In terms of metal）Molybdenum 20%, nickel 8%, the commercial catalyst FHUDS-6 of the catalyst component property and Fushun Petrochemical Research Institute's development and production Unanimously.

Raw material oil nature is shown in Table 1, and catalyst fundamental property is shown in Table 2, process condition and the results are shown in Table 3.

Comparative example 1 ~ 2

Comparative example 1 ~ 2 is conventional hydro dewaxing technological process, and reactor types are fixed bed, after feedstock oil is heated, Hydrobon catalyst and Hydrodewaxing catalyst are passed sequentially through, the oil product of generation obtains corresponding product through separating fractionating system. The Mo-Ni types Hydrobon catalyst used is that shape size is different with embodiment 1（It is shown in Table 2）, Hydrodewaxing catalyst, Mo-Co types Hydrobon catalyst, feedstock oil are same as Example 1.The product property of comparative example 1 ~ 2 is shown in Table 4.Comparative example 1 Mo-Ni types Hydrobon catalyst is 1 with the volume ratio of Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts:8, face The volume ratio of hydrogen pour point depression catalyst and Mo-Co type Hydrobon catalysts is 4:1；The Mo-Ni types hydrofinishing of comparative example 2 is catalyzed Agent is 1 with the volume ratio of Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts:1.Wherein Hydrodewaxing catalyst and The volume ratio of Mo-Co type Hydrobon catalysts is 1:2.

The feedstock oil property list of table 1.

The catalyst fundamental property of table 2.

The embodiment process condition of table 3 and result.

The comparative example process condition of table 4 and result.

Embodiment is compared with comparative example, in catalyst proportion under the same conditions, product quality be improved significantly, technology It is with the obvious advantage.

Claims (10)

1. a kind of production method of low-coagulation diesel oil, it is characterised in that including herein below：（1）Poor ignition quality fuel raw material with it is powdered Mo-Ni type Hydrobon catalysts are sufficiently mixed in a mixer, obtain the mixed feeding of catalyst and feedstock oil；（2）Mixing Feed from the reactor bottom for mixing dress filling Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts to enter with hydrogen and boil A reactor is risen, carries out hydrogenation reaction；Wherein described hydrogenation reaction includes hydro dewaxing reaction and hydrofining reaction；（3） Logistics is reacted through being discharged at the top of fluidized bed reactor into stable after reaction comprising powdered Mo-Ni Hydrobon catalysts Device, carry out supplement hydrofinishing；（4）Step（3）For the material of acquisition through separation of solid and liquid, liquid phase enters fractionating system, obtains high-quality Low-sulfur, low-coagulation diesel oil product.

2. according to the production method described in claim 1, it is characterised in that：The condensation point of described poor ignition quality fuel raw material 0 DEG C with On, in the various straight-run diesel oils that are obtained selected from processing naphthene base crude, intermediate base crude or paraffinic base crude oil, secondary processing diesel oil One or several kinds.

3. according to the production method described in claim 1, it is characterised in that：Described powdered Mo-Ni types hydrofinishing catalysis The granularity of agent is 50~2000 μm, and on the basis of the weight of catalyst, Mo is calculated as 8wt%~28wt% with oxide, and Ni is to aoxidize Thing is calculated as the wt% of 2wt%~15, and surplus is aluminum oxide or silicon-containing alumina carrier.

4. according to the production method described in claim 1, it is characterised in that：Step（1）Mixed feeding in, powdered Mo-Ni Type Hydrobon catalyst addition is calculated as 20~200 μ g/g with metal.

5. according to the production method described in claim 1, it is characterised in that：Described Hydrodewaxing catalyst is included containing shape-selective The silica-alumina supports and hydrogenation active metals of cracking molecular sieve；Described shape slective cracking molecular sieve is hydrogen type molecular sieve, the molecule Screened from one kind or more in Hydrogen ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, ZSM-35 and ZSM-38 molecular sieve Kind；The silica alumina ratio of the shape slective cracking molecular sieve is 10~150；Described hydrogenation active metals are in the periodic table of elements Group VIII and/or vib metals element, wherein group VIII active metal are Ni and/or Co, vib active metal It is W and/or Mo；On the basis of the weight of catalyst, hydrogenation active metal component contains using the content that oxide is counted as 10%~30% It is 70%~90% to have shape slective cracking molecular sieve silica-alumina supports content, and wherein shape slective cracking molecular sieve content in silica-alumina supports is 10%~40%, remaining is aluminum oxide.

6. according to the production method described in claim 1, it is characterised in that：Described Mo-Co types Hydrobon catalyst is this The conventional catalyst in field, to coordinate the fluid form of ebullated bed, catalyst appearance be it is spherical, its catalyst composition and property with The FHUDS-5 that Fushun Petrochemical Research Institute develops is consistent.

7. according to the production method described in claim 1, it is characterised in that：In described fluidized bed reactor, powdered Mo-Ni The volume ratio of the Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts of type Hydrobon catalyst and mixed packing is 1： 10~10：1；Wherein the volume ratio of Hydrodewaxing catalyst and Mo-Co type Hydrobon catalysts is 1：5~5：1.

8. according to the production method described in claim 1, it is characterised in that：Hydrogenation reaction bar in described fluidized bed reactor Part is：6.0 ~ 30.0MPa of reaction pressure, reaction temperature are 270 ~ 500 DEG C, and air speed is 0.1 ~ 5.0h^-1, hydrogen to oil volume ratio 400： 1~2000：1.

9. according to the production method described in claim 1, it is characterised in that：In boiling bed hydrogenation reactor, diesel raw material, hydrogen Gas contacts with powdered Mo-Ni types Hydrobon catalyst, Mo-Co types Hydrobon catalyst and Hydrodewaxing catalyst, enters Row hydrodesulfurization, denitrogenation, aromatic hydrocarbons saturation and pour point depression reaction.

10. according to the production method described in claim 1, it is characterised in that：Described stable reactor exit sets separation Filter plant, for the separation of solid and liquid of powdered Hydrobon catalyst and generation oil product, the solid phase powder shape for separating acquisition adds Hydrogen catalyst for refining recycles.