Diesel fraction deep desulfurization and decoloring hydrogenation

PROCESS OF PRESULFURATION Of a CATALYST Of HYDROGENATION

Medium-pressure hydrogenating process for removing arylhydrocarbon from diesel oil fraction

Presulfurization method of hydrogenation catalyst

A presulfurization method of hydrogenation catalyst comprises mixing an olefin-containing component, elemental sulfur and a promoter, heating the resultant mixture at 100-120° C. for more than 0.5 hours, wherein the mole number of elemental sulfur is at least not less than that of double bonds of the olefin, and the amount of the promoter used is 10-80% weight of the amount used of elemental sulfur, and said promoter is selected from an organic promoter used usually in rubber curing; the elemental sulfur-incorporated catalyst is impregnated with the product obtained, and heated at 100-300° C. in an inert atmosphere for more than 1 hour; wherein the volume amount of said product used is at least 60% of the pore volume of the catalyst. In the case of a little amount of the promoter being used, the presulfurization method can improve greatly the sulfur retention degree of the catalyst.

Combined hydrogenation method for mineral oil and animal and vegetable oil

Hydrogenation and refining method of gasoline with poor quality

The invention discloses a hydrogenation and refining method of gasoline with poor quality, comprising the following steps: the base oil of gasoline contacts and reacts with hydrogenation protective agent at low temperature; after reaction effluent is mixed with circulation oil, the mixture sequentially contacts and reacts with hydrogenation desilication solvent and hyrorefining catalyst at high temperature; the reaction product is cooled and separated to obtain hydrogen-rich gas and refined gasoline fraction; and parts of refined gasoline fraction serves as circulation oil to return to the outlet of a first hydrogenation reaction area. The method can handle coker gasoline with high content of sulphur, nitrogen and olefin, and refined gasoline fraction can satisfy charging requirements of reforming pre-hydrogenation devices and steam cracking ethene preparing devices. The method of the invention can effectively slow coking speed of heating furnace tubes, greatly lowers pressure drop generation ...

File digitization management method and device

The embodiment of the invention relates to the technical field of archive processing, and discloses an archive digitization management method, which comprises the following steps: carrying out image acquisition operation on an archive to be digitized through an image data acquisition module to obtain archive image information, and carrying out classification operation on the archive image information to determine that the archive image information is archive information; identifying the personal image information based on a pre-constructed identification model to obtain a corresponding personal information set; obtaining business personnel information associated with the contract archive information; and calling a character analysis model to identify the contract archive information to obtain a contract identification result. According to the archive digitization management method in the embodiment of the invention, the archive identification efficiency can be greatly improved through the ...

Process for deeply desulfurizing fractional oil with low hydrogen consumption

A deep desulfurizing process with low consumption of hydrogen for fractional oil (diesel oil) includes such steps as contacting diesel oil and hydrogen (2-8 MPa) with hydrorefining catalyst at 320-440 deg.C, 2-7 /hr (space velority) and 200-700 Ncu.m/cu.m (H2 to oil ratio), contacting the resultant with hydrorefining catalyst at 200-290 deg.C and 4-10 /hr (space velocity), separating the reactionresultant, passing the liquid resultant into fractional system, and returning the H2 back to reactor. It has high desulfurizing effect (lower than 300 ppm of S content in diesel oil).

Hydrogenation method for reducing aromatic hydrocarbon content of diesel oil cut fraction and improving its cetane number

A hydrogenation method for reducing arene content and improving cetane number of diesel distillate comprises the following steps: cutting a diesel material into a light component and a heavy component at a cutting temperature of 280 to 340 DEG C; circulating the heavy component and hydrogen in converse direction, and passing through a hydrogenation and modification catalyst bed in a first hydrogenation reaction zone to carry out deep dearomatization and arene ring-opening reaction; circulating the light component and hydrogen in the same direction, and passing through a hydrorefining catalyst bed in a second hydrogenation reaction zone to carry out hydrorefining reaction; and mixing the reaction effluents in the two reaction zones, cooling, separating, and distilling to obtain naphtha distillate and diesel product. The method can process diesel distillate with high sulfur content, high nitrogen content and high final boiling end under a moderate operation condition with low pressure and ...

Method for enhancing high-throughput DNA (Deoxyribose Nucleic Acid) sequencing data matching

The invention belongs to the field of detection of molecular biological information and specifically relates to a method for enhancing high-throughput DNA (Deoxyribose Nucleic Acid) sequencing data matching. According to the method, the matching quantity of the sequencing data is further increased on the basis of the Bayes technique and the present high-throughput DNA sequencing data matching, so as to increase the utilization efficiency and the test detection effect of the sequencing data. The method comprises the following steps: primarily matching the high-throughput DNA sequencing data; gaining the mispairing prior probability of the high-throughput DNA sequencing data; calculating the mispairing posterior probability of the high-throughput DNA sequencing data; gaining an assessed value in successfully matching of the high-throughput DNA sequencing data unable to be successfully matched with the concentrated data; extracting the successfully matched data of the high-throughput DNA sequencing ...

Digital camera head with brightness automatic adjustment

The main feature of the invention is: the main body of digital pick-up head has a '˜ñ'shape structure; the light emitting diode is mounted at both sides of it; the light source sensor is mounted at the top; a brightness regulator is added into interior of machine core. With self assistant light source, it can capture objects at black condition.

Hydrogenation method for improving cetane number of secondary processing diesel oil

The invention relates to a hydrogenation method for improving the cetane number of secondary processing diesel oil, which comprises the following steps: mixing secondary processing diesel oil and vegetable oil and/or animal fat; carrying out hydrogenation reaction by mixed ingredients and hydrogenation refining catalysts through contact in the existence of hydrogen; and cooling, separating and fractionating reaction outflow materials to obtain diesel oil products with mixed ingredients as the reference. The method provided by the invention can process low-quality diesel oil distillate with high sulfur content, high nitrogen content and small cetane number. The clean diesel oil products with low sulfur content, high polycyclic aromatic hydrocarbon and large cetane number can be obtained. Because the addition proportion of the vegetable oil is controlled, the influence on the hydrogenation catalysts by water generated in the reaction is reduced, the device operation period is prolonged, and ...

Hydrogenation catalyst composition, preparation method and use thereof

The invention discloses a hydrogenation catalyst combination, as well as the preparation and the application thereof. The catalyst comprises a catalytic agent containing at least one VIII group metal component, at least two VIB group metal components and an organic addition agent, X-ray is used for diffracting the characterization, and the catalyst has diffraction peaks when d is equal to 9.8 A-12.8 A, d is equal to 3.65 A-4.65 A, d is equal to 2.1 A-3.1 A and d is equal to 1.03 A- 2.03 A. Compared with the prior art, the catalyst of the invention has higher hydrogenation activity. When the invention is used for hydro-treating hydrocarbon oil, the reaction can be carried out under milder reaction conditions. If the hydrocarbon oil hydro-treating method provided by the invention is adopted, clean diesel oil which has sulfur of lower than 10 microgram/gram and accords with the European No. V discharge standard can be directly produced under the pressure of 6.4 MPa and the temperature of 340 ...

Process for presulfurizing hydrocatalyst

Combined hydrogenation method for mineral oil and animal and vegetable oil

The invention relates to a combined hydrogenation method for mineral oil and animal and vegetable oil. In two hydrogenation reaction zones, high-sulfur mineral diesel oil distillate and animal and vegetable oil are respectively used as the raw materials and hydrogenated under different conditions, and the products are mixed to obtain a low-surfur or an even ultralow-surfur diesel oil product, wherein the gas-phase compound flow obtained in the first hydrogenation reaction zone is cycled to the second hydrogenation reaction zone, and the gas-phase compound flow obtained in the second hydrogenation reaction zone is cycled to the first hydrogenation reaction zone. The method can process high-sulfur mineral diesel oil distillate and vegetable oil. The method can be used for obtaining a clean diesel oil product with low sulfur content and high content of polycyclic aromatic hydrocarbon and cetane number under mild operating conditions. The invention saves the equipment and the operating procedure ...

Hydrogenation catalyst and preparation method thereof

The invention discloses a hydrogenation catalyst, which comprises a carrier as well as a hydrogenation active component and an organic addictive carried on the carrier, wherein the catalyst also comprises an inorganic assistant carried on the carrier. The inorganic assisting agent is selected from one or more of an III group metal, an IIB group metal, an IVB group metal, a rare-earth metal and gallium in an element periodic table. The invention also provides a preparation method of the hydrogenation catalyst. Compared with the traditional hydrogenation catalyst, the activity of the hydrogenation catalyst provided by the invention is obviously improved.

High-flux DNA sequencing data matching reinforcement method based on Bayes technology

The invention belongs to the field of molecular organism information detecting, and particularly relates to a Bayes-based high-flux DNA sequencing data matching reinforcement method on the basis of existing high-flux DNA sequencing data matching to further increase the matching quantity of sequencing data based on the Bayes technology. The method comprises the step of carrying out preliminary matching on high-flux DNA sequencing data, the step of working out a high-flux DNA sequencing data mismatching prior probability, the step of calculating a high-flux DNA sequencing data mismatching posterior probability, the step of assessing the assessed value of the successful matching data in a high-flux DNA sequencing data unsuccessful matching set, and the step of extracting the successful matching data in the high-flux DNA sequencing data unsuccessful matching set. The Bayes technology is utilized, on the basis of the original high-flux DNA sequencing data matching mapping, data bulk with the ...

Low-voltage micro-displacement drive circuit and control method therefor

Process for presulfurizing hydrocatalyst

A process for pre-sulfurizing hydrogenation catalyst includes such steps as mixing the component containing olefin, sulfur and assistant, heating the mixture at 100-220 deg.C for more than 0.5 hr, immersing catalyst in the resultant for introducing sulfur in it, and heating the catalyst at 100-300 deg.C for one hr or more. The mole number of sulfur is not less than that of olefin double bonds. The consumption of said assistant is 10-80 wt.% of that of sulfur. The volume of said resultant is at least 60% of pore volume of the catalyst. Its advantage is greatly increased the sulfur retention level with less consumption of assistant.

Direction adjustable USB lighting lamp

The invention discloses a USB interface pin set at the inputting end of power supply of DC lighting circuit and connected with computers USB interface. The characteristic that computers USB interface not only transfers data but also supplies power, is used fully. By setting USB interface of DC lighting circuit, the power supply providing power for computer provides power for LED. The insulation skin of USB lighting lamp, whose direction can be adjusted, is made of composite. It can be bended randomly. The direction can be changed and it is not easy to fracture. The invention is provided with scientific design, simple structure, small cubage and convenient carrying. It is especially used in portable computer out of door. It can provide brightness in small range for operating computer in dark.

Sports shoes capable of sliding with rolling wheels and walking

The invention discloses sports shoes capable of sliding with rolling wheels and walking, and belongs to the technical field of shoes of daily use articles. Each sports shoe consists of a vamp, uppers, a sole and rolling wheels. The sports shoes capable of sliding with rolling wheels and walking not only have the function of the daily sports shoes, but also can be used for sliding by rolling by wearing the same pair of sports shoes. The sports shoes capable of sliding with rolling wheels and walking have the functions that a user can freely choose to walk or slide by rolling, and the speed can be controlled by the user. The rolling wheels are arranged in the soles of the sports shoes so as to ensure that the user can walk freely, and can easily and quickly slide at any time. The sports shoes capable of sliding with rolling wheels and walking have the advantages of simple structure, convenient and flexible use, comfortable wear, convenience, durability, high quality and low price, good stability ...

Hydrogenation method for reducing condensation point of diesel oil

The invention relates to a hydrogenation method for reducing the condensation point of diesel oil, comprising the following steps of: mixing diesel oil material and hydrogen for full fraction hydrogenation in a first hydrogenation area; flashing reaction effluences in a heat high-pressure separator; flashing the lighter components of the diesel oil out of the heat high-pressure separator, whereinliquid-phase material flows obtained by the heat high-pressure separator are the heavy components of the diesel oil; mixing the liquid-phase material flows with the hydrogen, and putting into second hydrogenation areas including a pour point depression reaction area and a post-refining area, for pour point depression reaction; mixing obtained gas-phase material flows of the heat high-pressure separator with reaction effluences of the second hydrogenation area, and putting into a sequential separation and fractionation system so as to obtain diesel oil products. The invention can enhance the yield ...

Hydrogenation method for reducing condensation point of diesel oil

Pre-sulfurizing process of hydrogenating catalyst

The pre-sulfurizing process of hydrogenating catalyst includes impregnating the hydrogenating catalyst in solution containing sulfurized olefin at room temp-220 deg.c for 0.5-5 hr, and heating catalyst in inert atmosphere. The solution containing sulfurizing olefin is in the temperature of room temperature to 220 deg.c and has dissolved S element, total S content of 4-40 wt% and the weight ratio between S in element state and S in sulfurized olefin of 0.5-7. The sulfurized hydrogenating catalyst contains S in 1-7.5 w. The pre-sulfurizing process of hydrogenating catalyst can lower its breaking rate greatly and raise the S retention degree.

Hydrogenation catalyst composition and application thereof

The invention relates to a hydrogenation catalyst composition and application thereof. The hydrogenation catalyst composition contains at least one VIII family metal component, at least two VI B family metal components, an organic addition agent and at least one binding agent. Based on the total weight of the catalyst composition, the content of the VIII family metal component is 1 to 60 weight percent in terms of an oxide, the content of the VI B family metal component is 7 to 88 weight percent in terms of the oxide, the content of the organic addition agent is 0.5 to 20 weight percent, and the content of the binding agent is 10 to 80 weight percent. The method for preparing the catalyst composition comprises the following steps: (1) mixing at least one compound containing the VIII familymetal component, at least two compounds containing different VI B family metal components, the organic addition agent, the binding agent and water to prepare a mixed solution; and (2) putting the mixed ...

Prcocess for deeply desulfurizing fractional oil with low hydrogen consumption

Process for producing ultralow sulfur diesel fuels

The invention relates to a production method for ultra-low sulfur diesel oil; wherein, after mixed with hydrogen, straight-run atmosphere 3rd side cut distillate and (or) diesel oil heavy distillate enter(s) a first hydrogenation reaction zone and reacts under the action of hydro-upgrading catalyst and hydrofining catalyst; after mixed with the reaction effluent of the first hydrogenation reaction zone, straight-run atmosphere 2nd side cut distillate and (or) diesel oil light distillate enter(s) a second hydrogenation reaction zone and reacts under the action of the hydrofining catalyst; the reaction effluent of the second hydrogenation reaction zone is cooled, separated and distilled to obtain naphtha fraction and diesel products. The method provided by the invention can treat the diesel distillate with high sulfur, high nitrogen and high final boiling point, and under mild operating conditions, obtain clear diesel products with low content of sulfur and polycyclic aromatic hydrocarbons ...

Hydrogenation method for producing ultra-low sulfur clean diesel

The invention relates to a hydrogenation method for producing ultra-low sulfur clean diesel. The method comprises the following steps: mixing diesel fraction feed oil and hydrogen gas, then transferring the mixture into a reactor to contact with a hydrofining catalyst I and a hydrofining catalyst II to react sequentially, and separating and distilling the reaction outflow to obtain the diesel product, wherein the hydrofining catalyst I is a supported hydrofining catalyst using Co-Mo as the active metal component, and the hydrofining catalyst II is a bulk hydrofining catalyst. By adopting the method provided by the invention to process inferior diesel fractions under mild conditions, the low sulfur or ultra-low sulfur clean diesel product can be obtained. Compared with the prior art, when the hydrodesulphurization depths are same, the chemical hydrogen consumption in the hydrogenation process of the invention is 5wt%-10wt% lower than that of the prior art.

Hydrogenation catalyst and preparation method thereof

The invention discloses a hydrogenation catalyst, which comprises a carrier as well as a hydrogenation active component and an organic addictive carried on the carrier, wherein the catalyst also comprises an inorganic assistant carried on the carrier. The inorganic assisting agent is selected from one or more of an III group metal, an IIB group metal, an IVB group metal, a rare-earth metal and gallium in an element periodic table. The invention also provides a preparation method of the hydrogenation catalyst. Compared with the traditional hydrogenation catalyst, the activity of the hydrogenation catalyst provided by the invention is obviously improved.

Hydrogenation method for producing clean diesel oil

The present invention relates to a hydrogenation method for producing clean diesel oil, after the raw material oil is mixed with circulating hydrogen, the mixture enters into a second hydrogenating reactor area, under the action of hydrogenation refining catalyst, the reaction is performed, after the reaction effusion is cooled, separated and fractionated, naphtha distillate, light diesel oil distillate and heavy diesel oil distillate are got, after a part or whole heavy diesel oil distillate is mixed with new hydrogen, the mixture enters into a first hydrogenating reactor area, and contacts with the hydrogenating reforming catalyst to perform reaction, the reactant enters into the second hydrogenating reactor area directly without separation, the left heavy diesel oil distillate and the light diesel oil distillate are mixed to get the diesel oil product. The adoption method of the present invention can treat high sulpher, high nitrogen and high drying point diesel oil distillate, under ...

Hydrogenation method for producing clean diesel oil

The present invention relates to a hydrogenation method for producing clean diesel oil, after the raw material oil is mixed with circulating hydrogen, the mixture enters into a second hydrogenating reactor area, under the action of hydrogenation refining catalyst, the reaction is performed, after the reaction effusion is cooled, separated and fractionated, naphtha distillate, light diesel oil distillate and heavy diesel oil distillate are got, after a part or whole heavy diesel oil distillate is mixed with new hydrogen, the mixture enters into a first hydrogenating reactor area, and contacts with the hydrogenating reforming catalyst to perform reaction, the reactant enters into the second hydrogenating reactor area directly without separation, the left heavy diesel oil distillate and the light diesel oil distillate are mixed to get the diesel oil product. The adoption method of the present invention can treat high sulpher, high nitrogen and high drying point diesel oil distillate, under ...

Hydrogenation catalyst composition, preparation method and use thereof

The invention discloses a hydrogenation catalyst combination, as well as the preparation and the application thereof. The catalyst comprises a catalytic agent containing at least one VIII group metal component, at least two VIB group metal components and an organic addition agent, X-ray is used for diffracting the characterization, and the catalyst has diffraction peaks when d is equal to 9.8 A-12.8 A, d is equal to 3.65 A-4.65 A, d is equal to 2.1 A-3.1 A and d is equal to 1.03 A- 2.03 A. Compared with the prior art, the catalyst of the invention has higher hydrogenation activity. When the invention is used for hydro-treating hydrocarbon oil, the reaction can be carried out under milder reaction conditions. If the hydrocarbon oil hydro-treating method provided by the invention is adopted, clean diesel oil which has sulfur of lower than 10 microgram/gram and accords with the European No. V discharge standard can be directly produced under the pressure of 6.4 MPa and the temperature of340 ...

Process for producing ultralow sulfur diesel fuels

The invention relates to a production method for ultra-low sulfur diesel oil; wherein, after mixed with hydrogen, straight-run atmosphere 3rd side cut distillate and (or) diesel oil heavy distillate enter(s) a first hydrogenation reaction zone and reacts under the action of hydro-upgrading catalyst and hydrofining catalyst; after mixed with the reaction effluent of the first hydrogenation reaction zone, straight-run atmosphere 2nd side cut distillate and (or) diesel oil light distillate enter(s) a second hydrogenation reaction zone and reacts under the action of the hydrofining catalyst; the reaction effluent of the second hydrogenation reaction zone is cooled, separated and distilled to obtain naphtha fraction and diesel products. The method provided by the invention can treat the dieseldistillate with high sulfur, high nitrogen and high final boiling point, and under mild operating conditions, obtain clear diesel products with low content of sulfur and polycyclic aromatic hydrocarbons ...

Pre-sulfurizing process of hydrogenating catalyst

Medium-pressure hydrogenating process for removing arylhydrocarbon from diesel oil fraction

A medium-pressure hydrogenating process for removing arylhydrocarbon from diesel oil fraction includes contacting diesel oil and hydrogen with hydrorefining catalyst in the first reactor at 330-390 deg.C and 6-9 MPa, contacting its resultant without separation with hydrorefining catalyst in the second reactor at 250-290 deg.C and 6-9 MPa, gas-liquid separation, passing the liquid product into fraction system, and returning gas rich in hydrogen back to reactors. It has high effect.

Method for producing clean diesel oil by vegetable oil

The invention relates to a method for producing clean diesel oil by vegetable oil; the mixed raw material of mineral oil and vegetable oil is contacted with hydrogen, under the hydrotreatment reaction condition, hydrogenation reaction is carried out under the action of hydrotreating catalyst, wherein the proportional range of the mineral oil and vegetable oil is calculated by the following formula by weight: the proportion of the mineral oil in the mixed raw material is equal to (0.05-0.3)percent/sulphur content percent in the mineral oil; in the invention, the mixed raw material of mineral oil and vegetable oil is adopted, as the mineral oil is diesel fraction with high sulphur content, but no sulphur is contained in the vegetable oil, the mixed raw material is adopted, so as to meet needs that the hydrogenation catalyst is kept to be in a vulcanizing state, prolong the life of the catalyst, reduce the difficulty of high-sulfur mineral oil desulfuration reaction to the maximum extentand ...

Hydrogenation and refining method of gasoline with poor quality

The invention discloses a hydrogenation and refining method of gasoline with poor quality, comprising the following steps: the base oil of gasoline contacts and reacts with hydrogenation protective agent at low temperature; after reaction effluent is mixed with circulation oil, the mixture sequentially contacts and reacts with hydrogenation desilication solvent and hyrorefining catalyst at high temperature; the reaction product is cooled and separated to obtain hydrogen-rich gas and refined gasoline fraction; and parts of refined gasoline fraction serves as circulation oil to return to the outlet of a first hydrogenation reaction area. The method can handle coker gasoline with high content of sulphur, nitrogen and olefin, and refined gasoline fraction can satisfy charging requirements of reforming pre-hydrogenation devices and steam cracking ethene preparing devices. The method of the invention can effectively slow coking speed of heating furnace tubes, greatly lowers pressure drop generation ...