55results about How to "Octane reduction" patented technology

The invention provides a light hydrocarbon sweetening catalyst based on aluminum oxide crystal face regulation and control and a preparation method of the light hydrocarbon sweetening catalyst. The light hydrocarbon sweetening catalyst is prepared by taking gamma-aluminum oxide after hydro-thermal treatment regulation and control as a carrier and nickel and molybdenum and active metals. The light hydrocarbon sweetening catalyst provided by the invention is a high-activity and high-selectivity catalyst, can be used for catalyzing thiol and alkadiene in light hydrocarbon to act to generate large-molecular sulfide, can be also used for catalyzing selective hydrogenation saturation of diolefin, is high in sweetening activity and high in diolefin hydrogenation selectivity when being compared with a conventional catalyst and is long in circulation period and relatively good in industrial application prospect as active components are not lost and low in probability of inactivation.

A process for deeply hydrorefining poor-quality gasoline includes such steps as removing biolefine from FCC full-fraction gasoline at lower temp, and modifying (arylisomerizing) and hydrodesulfurizing at higher temp. The hydrodesulfarizing catalyst is the hydrorefining catalyst containing copper oxide and/or zinc oxide.

The invention provides an internal combustion engine with fuels being mixed and ignited on the spot and a control method thereof, in particular preparation, feeding and combustion control of fuels ofa combustion engine. A set of high-cetane and high-octane fuel feed and control system is additionally arranged in the internal combustion engine, and the system comprises a mixed fuel electronic control unit (8), a high-octane fuel box (9), a high-octane fuel pressure regulator (10), a high-octane fuel nozzle (13), a high-cetane fuel nozzle (14), a high-cetane fuel pressure regulator (17) and a high-cetane fuel box (18); and by controlling the high-octane flue nozzle, the high-cetane fuel nozzle and an ignition module, the spot mixing, the mixing ratio control, the excess air coefficient control and the ignition control of high-octane fuel and high-cetane fuel are achieved. The invention avoids accidental fire of the traditional single-fuel spark-ignition internal combustion engine in a cold starting process, improves the idling performance and the intermediate-speed and high-speed performance of the internal combustion engine effectively, and achieves the aims of energy saving and emission reduction of all working conditions of the internal combustion engine.

The invention provides a method for reducing sulfur content in gasoline. According to the invention, full-fraction gasoline is fractionated to obtain a light gasoline fraction, an intermediate gasoline fraction and a heavy gasoline fraction, wherein the light gasoline fraction is subjected to alkali washing and refining so as to remove mercaptan sulfur therein, the intermediate gasoline fraction enters into a first hydrogenation unit for catalytic reforming so as to obtain a reformed intermediate gasoline fraction with an increased octane number, the heavy gasoline fraction enters into a second hydrogenation unit and contacts with a selective hydrodesulfurization catalyst for selective hydrodesulfurization, and the refined light gasoline fraction, the reformed intermediate gasoline fraction and the hydrogenated heavy gasoline fraction are mixed to obtain a full-fraction gasoline fraction with ultra low content of sulfur. The obtained full-fraction gasoline product has total sulfur content of less than 10 mu g/g, and compared with a full-fraction gasoline raw material, loss of the octane number ROC of the full-fraction gasoline product is less than 1.0 unit.

The catalyst for aliphatic mono-olefine hydrosaturation catalyst is formed from active component and carrier, in which active component comprises (wt%) Mo2O3 5-20%, NiO 4-15% and X1 1-5%, in which X1is one or several kinds selected from B, P and Si, besides, it also can include adjuvant X2, the weight percentage content of X2 is 0-5%, and its carrier is active alumina. Said catalyst is applicable to hydrosaturation of C4-C20 fatty olefines, specially applicable to hydrosaturation of light olefines, such as ethylene, propylene and butylene oligomer gasoline to produce gasoline with high octane value. Its hydrogenation condition includes: temp. is 180-300 deg.C, pressure is 1.5-4.0 MPa, liquid hourly space velocity is 1.0-5.0 h(-1) and mole ratio of hydrogen and olefine is 1.5-2.5.

The invention discloses a conversion technology for catalytic diesel. The conversion technology comprises the following steps that (1) mixed materials of catalytic cracking diesel and hydrogen enter ahydrogenation reactor for hydrofining reaction; (2) hydrofining reaction effluent directly enters a cracking reactor and is subjected to contact reaction with hydrocracking catalyst beds in the cracking reactor, wherein a hydrocracking reactor is filled with an upper hydrocracking catalyst bed and a lower hydrocracking catalyst bed in a grading manner, a catalyst of the upper bed takes W-Ni and/or Mo-Ni as an active metal component and takes a modified Y molecular sieve and/or alkali metal or alkaline earth metal modified aluminum oxide as a carrier, and a catalyst of the lower bed takes Mo-Co as an active metal component and takes the modified Y molecular sieve and carbon deposit aluminum oxide as a carrier; and (3) the hydrocracking reaction effluent obtained in the step (2) is subjected to separation and fractionation so as to obtain a naphtha component and a diesel component. According to the conversion technology, on the premise that the conversion rate of the catalytic diesel isbetter met, the hydrogenation saturation of a generated gasoline component is reduced, and the octane value of the gasoline component is increased.

The invention discloses a preparation method of a catalyst catalyzing diesel hydro-conversion, and a hydrogenation process. The method comprises the following steps: (1) an impregnation liquid containing active metal is used for impregnating Y molecular sieve; (2) the Y molecular sieve obtained in the step (1) and amorphous aluminosilicate and/or aluminum oxide are well mixed; dilute nitric acid is added, such that a slurry is formed; extrusion molding is carried out, and drying and roasting are carried out, such that the catalyst catalyzing diesel hydro-conversion is obtained. With the method provided by the invention, active metal effective utilization rate is improved, catalyst overall hydrogenation capacity is controlled, and catalyst hydrogenation reaction selectivity and stability are improved. The invention also provides a hydrogenation process matching the hydro-conversion catalyst. With the hydrogenation process, gasoline further hydrogenation or cracking reaction is reduced to a certain extent, gasoline octane number can be improved, and hydro-cracking liquid product yield can be improved.

The invention discloses an HDS (hydrodesulfurization) technology of FCC (fluid catalytic cracking) gasoline. According to the technology, a fixed bed reactor is adopted and filled with an HDS catalyst which comprises a carrier and an active component; the carrier is a compound or a mixture of MSU-G, SBA-15 and HMS; the active component is a mixture of MO2N, W2N, Mo2C and WC; the catalyst further contains a catalytic promoter which is a mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4; the reaction conditions of the fixed bed reactor are as follows: the reaction temperature is 300-420 DGE C, the hydrogen pressure is 2.5-3.5 MPa, the hydrogen oil volume ratio is 500-800, and the volume airspeed is 1.5-4 h<-1>. The total sulfur content in the FCC gasoline can be reduced to 5 ppm or below to meet national five gasoline standards with the technology. Meanwhile, the octane number of the FCC gasoline is not reduced obviously with the technology.

The invention discloses a hydrodesulfurization catalyst. The hydrodesulfurization catalyst comprises a carrier, an active component and a catalysis aid, wherein the carrier is SAPO-5 with a synthetic skeleton structure doped with a heteroatom Cu<2+>, and the doping amount is 0.56%-0.75% by weight of SAPO-5; the active component is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and wolfram carbide WC; the total content of the active component is 1%-15% of the weight of SAPO-5; and the catalysis aid is a mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. According to the hydrodesulfurization catalyst, the total sulfur content of FCC gasoline can be decreased below 10 ppm, so as to meet China 5 standard; and meanwhile, the octane value of the FCC gasoline is not obviously decreased.

This invention discloses a catalytic oxidative desulfurization method for petroleum products. In the method, oxidant, catalyst and solvent are added in the petroleum products for desulfurization. The catalyst is oxyacid salt of Mn, Sb, W, Ce, Sn, Mo, V or Cr. The catalyst as well as reaction conditions are only effective to organic sulfur and nitrogen compounds while have no effect on unsaturated hydrocarbons such as olefins and aromatic hydrocarbons. After the desulfurization method, the content of sulfur in the petroleum products can be less than 15 mg/L, while the octane number of the petroleum products is not changed. The desulfurization method is simple, and has such advantages as mild reaction conditions and high desulfurization efficiency, thus has wide potential applications.

The invention discloses a hydrodesulfurization catalyst. The catalyst contains a carrier and an active ingredient, wherein the carrier is MCM-41, of which a synthesized skeleton structure is doped with heteroatoms Co<2+>, and the doped amount of the heteroatoms Co<2+> is 0.56% to 0.75 the weight of the MCM-41; and the active ingredient is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC, and the total content of the active ingredient is 1% to 15% the weight of the carrier MCM-41. The catalyst further contains a catalytic promoter, wherein the catalytic promoter is a mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. By the catalyst, the total sulfur content of FCC gasoline can be lowered to be lower than 10ppm, so as to meet national gasoline standards V. Meanwhile, by the catalyst, the octance value of the FCC gasoline cannot be lowered obviously.

The invention discloses a hydrodesulfurization process for FCC gasoline. A fixed bed reactor is adopted in the process and is filled with a hydrodesulfurization catalyst, wherein the catalyst comprises a carrier and an active component; the carrier is SAPO-5 doped with heteroatom Co<2+> in a synthesized framework structure; the active component is a mixture of MO2N, W2N, Mo2C and WC; the catalyst further contains a catalytic promoter; the catalytic promoter is a mixture of TiO2, CeO2, V2O5 and NbOPO4; reaction conditions of the fixed bed reactor are that the reaction temperature is 300 to 420DEG C, the hydrogen pressure is 2.5 to 3.5MPa, the volume ratio of hydrogen to gasoline is 500 to 800, and the volume space velocity is 1.5 to 4h<-1>. By using the process, the content of total sulfur in the FCC gasoline is reduced to below 10ppm so as to meet national V emission standard of the gasoline. Meanwhile, by means of the process, an octane value of the FCC gasoline is not remarkably reduced.

A hydrodesulfurization catalyst is disclosed. The catalyst comprises a carrier and an active component. The carrier is KIT-1 the synthesis skeleton of which is doped with Cu<2+> that is a heteroatom, with the doping amount being 0.56-0.75% by weight of the KIT-1. The active component is a mixture of dimolybdenum nitride (Mo<2>N), tungsten nitride (W2N), molybdenum carbide (Mo<2>C) and tungsten carbide (WC). The total weight of the active component is 1-15% of the weight of the carrier KIT-1. The catalyst also comprises a catalytic promoter that is a mixture of Cr<2>O3, ZrO2, CeO2, V2O5 and NbOPO4. The catalyst can reduce the total sulfur content of FCC gasoline to 10 ppm or below, thus meeting the national V emission standard of gasoline in China. In addition, through adoption of the catalyst, the octane number of the FCC gasoline is not obviously reduced.

The invention discloses a hydrogen desulfurization catalyst. The catalyst includes a carrier and an active component; the carrier is MCM-41 mixed with heteroatom Cu2+ in a compounded skeleton structure, and the mixing amount is 0.56-0.75% of MCM-41 by weight; the active component is mixture of dimolybdate nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the total content of the active component is 1-15% of the carrier MCM-41 by weight; the catalyst further includes catalytic addictive, and the catalytic addictive is the mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. The catalyst can be applied to reduce total catalytic addictive in FCC (family car China) gasoline to 10 ppm below, so as to meet the five national standards of gasoline; meanwhile, the application of the catalyst can prevent the octane value of FCC gasoline from obviously reducing.

The invention discloses a hydrofining catalyst. The catalyst comprises a carrier and an active component. According to the carrier, KIT-1 of heteroatom Co<2+> is doped in a synthetic skeleton structure, wherein the doping content is 0.56%-0.75% of weight of KIT-1. The active component is a mixture of molybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC. Total content of the active component is 1-15% of weight of the carrier KIT-1. The catalyst also contains a catalytic addictive, which is a mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. By the use of the catalyst, total sulfur content of FCC gasoline can be reduced to 10 ppm and below so as to meet gasoline ''China 5''standard. Meanwhile, by the adoption of the catalyst, octane number of FCC gasoline is not obviously reduced.

The invention discloses a fluid catalytic cracking (FCC) gasoline hydrogen desulfurization process. The process adopts a fixed bed reactor, a hydrogen desulfurization catalyst is filled in the fixed bed reactor and the catalyst comprises a carrier and an active component; the carrier is KIT-1 formed by doping heteroatom Co2+ into a synthetic skeleton structure; the active component is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the reaction conditions of the fixed bed reactor are as follows: the reaction temperature is 300 to 420 DEG C, the hydrogen pressure is 2.5 to 3.5 MPa, the volume ratio of hydrogen to oil is 500-800 and the volume space velocity is 1.5-4/h. By the process, the total sulfur content of the FCC gasoline can be reduced to be below 10 ppm so as to reach the national five-level standard. Meanwhile, by the process, the octane value of the FCC gasoline is not reduced obviously.

The invention discloses a FCC gasoline hydrodesulfurization technology. The technology employs a fixed bed reactor, the fixed bed reactor is filled with a hydrodesulfurization catalyst, the catalyst comprises a carrier and an active component; the carrier is hetero atom Co<2+>-doped KIT-1 in a synthesis frame structure; the active component is a mixture of nitrided dimolybdate MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the catalyst contains a catalysis auxiliary agent, the catalysis auxiliary agent is a mixture of TiO2, CeO2, V2O5 and NbOPO4; the reaction condition of the fixed bed reactor is characterized in that the reaction temperature is 300-420 DEG C, the hydrogen partial pressure is 2.5-3.5 MPa, the volume ratio of hydrogen to oil is 500-800, and the volume space velocity is 1.5-4h < -1>. The technology can reduce the total sulfur content in FCC gasoline to less than 10 ppm which can reach the national V standard. According to the technology, the octane number of the FCC gasoline is not obviously reduced.

The invention discloses a FCC (fluid catalytic cracking) gasoline hydrodesulfurization process employing a fixed bed reactor; the fixed bed reactor is filled with a hydrodesulfurization catalyst that includes a support and an active ingredient; the support is KIT-1 with frame structure doped with heteroatom Co2+; the active ingredient is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the catalyst also comprises a catalysis aid that is a mixture of Cr2O3, ZrO3, CeO2, V2O5 and NbOPO4; the fixed bed reactor carries out reaction under the following conditions: reaction temperature 300-420 DEG C, hydrogen pressure 2.5-3.5 MPa, hydrogen-oil volume ratio 500-800, volume air speed 1.5-4 h<-1>; the process may provide total sulfur content of FCC gasoline reduced to 10 ppm and below to meet the gasoline standard GB5; the process also provides not evidently reduced octane value of FCC gasoline.