240 results about "Marine fuel" patented technology

The invention discloses a marine sniffing estimation method of sulphur content in fuel oil, comprising the following five steps: acquiring tail gas; drawing a SO2 monitoring curve and a CO2 monitoringcurve to acquire SO2 concentration value, CO2 concentration value, SO2 background concentration value and CO2 background concentration value during the same monitoring period; calculating sulphur content in marine fuel oil on the basis of material balance; acquiring monitoring time of ships with excessive sulphur content in fuel oil; and locking the ships with excessive sulphur content in fuel oil. By the marine sniffing estimation method of sulphur content in fuel oil, the purpose of identifying ships with illegal use of high sulphur oil can be achieved without going on board, and huge wastecaused by blind sampling is avoided. The invention provides an efficient means for accurate sampling inspection of ships in national ship emission control areas.

The invention discloses a preparation method of marine fuel oil, comprising the following steps: (1) visbreaking heavy oil components at 400-450 DEG C for 10-60 min; (2) carrying out fractionation on the product obtained by visbreaking, and collecting fractions with the distillation range of higher than 165 DEG C; and (3) mixing the fractions with the distillation range of range of higher than 165 DEG C and light oil components to obtain the marine fuel oil which is characterized in that the density at 15 DEG C is 850-991 kg/m<3>, the viscosity at 50 DEG C is no larger than 380 mm<2>/s, the total content of silicon measured as silicon and aluminium measured as aluminium is 0-80 mg/kg, wherein the viscosity of the heavy oil components at 100 DEG C is no less than 35 mm<2>/s, the density of the heavy oil components at 15 DEG C is 950-1200 kg/m<3>, and the total content of silicon measured as silicon and aluminium measured as aluminium in the heavy oil components is 0-300 mg/kg The invention also provides the marine fuel oil prepared by the method. According to the method of the invention, the production cost of the marine fuel oil can be greatly reduced.

Slurry hydrocracking a heavy hydrocarbon feed produces a HVGO stream and a pitch stream. At least a portion of the pitch stream is subjected to SDA to prepare a DAO stream low in metals. The DAO is blended with at least a portion of the HVGO stream to provide turbine or marine fuel with acceptable properties for combustion in gas turbines or for marine fuel grades.

The present invention discloses a new utilization process for catalytic cracking slurry oil. According to the process, catalytic slurry oil is subjected to vacuum distillation to obtain light slurry oil and topped slurry oil, wherein a distillation outlet temperature is 360-480 DEG C; physical and chemical indicators of the light slurry oil are detected, and are compared with marine fuel oil standards, wherein the light slurry oil meeting the standards is directly adopted as marine residual fuel oil, or a diesel component is adopted to blend to meet the standards so as to adopt the light slurry oil as marine distillate fuel oil, or a residue oil component is adopted to blend to meet the standards so as to adopt the light slurry oil as marine residual fuel oil. The marine fuel oil standards are the national standards ZB/T17411-1998. The diesel component is one or a plurality of materials selected from normal pressure second side oil, normal pressure third side oil, a catalytic diesel and a hydrogenated diesel, and is blended into the light slurry oil, wherein the use amount of the diesel component is 30-95% of the total amount. The residue oil component is one or a plurality of materials selected from vacuum residue oil, viscosity reduction residue oil and deoiled asphalt, and is blended into the light slurry oil, wherein the use amount of the residue oil component is 5-85% of the total amount. The new process of the present invention has characteristics of simple process, wide raw material, and product diversification.

The invention relates to a process method for preparing marine fuel oil on the basis of catalytic cracking oil slurry desolidification-hydrogenation and belongs to the technical field of petroleum processing. According to the method, a solvent which is mutually soluble with oil slurry is used as a desolidification adjuvant of the catalytic cracking oil slurry to realize low-temperature desolidification, and the oil slurry which is subjected to desolidification and hydrogenation control is used as a fuel oil component to be compounded with a conventional marine fuel component. The process method for preparing the marine fuel oil on the basis of the catalytic cracking oil slurry desolidification-hydrogenation comprises the steps of oil slurry desolidification, hydrogenation and oil preparation, wherein under the condition of 40-60 DEG C, the catalytic cracking oil slurry is mixed with a diluent, separated, subjected to slag removal and then distilled to obtain desolidified oil slurry; under the action of a catalyst adopting nickel oxide and molybdenum oxide as active components and alumina as a carrier, the desolidified oil slurry is catalytically hydrogenated under the conditions that the space velocity is 0.25-0.5 h<-1>, the temperature is 350-370 DEG C, the pressure reaches 6-10 Mpa, and a hydrogen-oil volume ratio reaches (600-650):1. The method has the advantages that fewerimpurities and charcoal residues are generated, the equipment investment and the process cost are low, and the marine fuel cost is significantly reduced while the combustion performance of oil products is maintained; therefore, the process method is particularly suitable for manufacturing and processing high-performance fuel oil.

The invention relates to a regulating method of fuel oil and particularly relates to a regulating method of bunker fuel oil. The bunker fuel oil is realized by the following process: naturally settling FCC (Fluid Catalytic Cracking) oil slurry and thermal-cracking residue oil, then, filtering by a filter screen to remove catalyst fine powder and other impurities contained in materials; pre-adding hydrogenation tail oil and ethylene bottom oil into a regulating tank, heating gradually, stirring until the two is uniformly mixed; adding the FCC oil slurry and the thermal-cracking residue oil treated in the step (1) into the regulating tank, increasing the temperature and uniformly mixing the components; adding a desulfurization aid, a cosolvent and combustion improver into the regulating tank in sequence, and uniformly mixing the components to obtain the product in the invention. According to the invention, the impurities and the catalyst fine powder in the FCC oil slurry and the residue oil easily cause severe corrosion and scale formation of an internal combustion engine, and the defect is improved by settling and filtering, so that emission of nitrogen oxides and SOx is lowered, and pollution on air and ocean is reduced.

The present disclosure relates to marine fuel compositions having low sulfur content and processes for making such compositions.

The invention relates to a process for the production of diesel fuel bases comprising a sulfur content that is less than 100 ppm, starting from a feedstock that is obtained from a renewable source, comprising the following stages:

• • a) A stage for bringing the feedstock into contact with a fixed-bed hydrotreatment catalyst for producing an effluent that comprises a gaseous fraction comprising hydrogen and a hydrocarbon-based liquid fraction,
  • d) A stage for bringing into contact at least one portion of the hydrocarbon-based liquid fraction in the presence of a selective hydroisomerization catalyst in a fixed bed,
  • e) A stage for separating the effluent that is obtained from stage d) into a gaseous fraction that comprises hydrogen and at least one diesel-fuel-based fraction.

The invention relates to a shore-based variable frequency power supply system, which comprises a variable frequency power supply, a port high voltage transformer substation, and a marine power system, wherein the input end of the variable frequency power supply is connected with the port high voltage transformer substation; the output end of the variable frequency power supply is connected with the marine power system; and the power supply system can continuously output three-phase alternating current with a voltage adjustment range of 0-6.6 kV or 0-10 kV and a frequency adjustment range of 0-60 Hz. The output side of the variable frequency power supply is connected with a distribution line via a cable drum, the output high voltage directly distributes power for the marine power system via the distribution line, and the output low voltage passes through a step down transformer and distributes power for the marine power system. The shore-based variable frequency power supply system disclosed by the invention has the advantages that: the power used by the power supply system is derived from the port high voltage transformer substation, so environmental pollution and energy consumption caused by taking a marine fuel generator unit as a power source are greatly reduced, and a high-quality and high-reliability power supply is provided for anchor.

The invention discloses a method and a device for detecting the content of sulfur in marine fuel oil and equipment. The method comprises the following steps of acquiring sulfur dioxide concentration data and carbon dioxide concentration data generated after burning the marine fuel oil; determining the content of the sulfur in the marine fuel oil according to a ratio of the sulfur dioxide concentration data to the carbon dioxide concentration data. The ratio, measured by the scheme, of the content of sulfur dioxide to the content of carbon dioxide is a relative value and is not influenced by air dilution, so that the requirement on flue gas measuring points is not high; for the measurement of the content of the sulfur in the marine fuel oil, other physicochemical properties of fuel oil do not need to be learned in advance, and parameters of a working state of a ship engine do not need to be learned either, therefore the content of the sulfur in the marine fuel oil is determined according to the ratio of the sulfur dioxide concentration data to the carbon dioxide concentration data; whether the content of the sulfur in the marine fuel oil is overproof is quickly measured under the condition of not making contact with a ship, a preliminary screening result is provided for further on-ship detection, and the law enforcement effectiveness is greatly improved.

A marine fuel oil supply device comprises an oil mixing barrel, an oil cabinet and a master control system. An oil mixing pipeline is arranged between the oil mixing barrel and the oil cabinet. An oil supply pipeline is arranged between the oil mixing barrel and an engine, and the oil mixing pipeline is provided with a first oil supply electric control valve, a filter, a supply oil pump and a flow meter. The oil supply pipeline is provided with an oil supply pressurizing oil pump, a second oil supply electric control valve and a viscometer. A heating device and a cooling device are further connected between the second oil supply electric control valve and the viscometer in parallel. The master control system comprises a CPU. The oil mixing barrel, the first oil supply electric control valve, the supply oil pump, the flow meter, the oil supply pressurizing oil pump, the second oil supply electric control valve and the viscometer are connected with the CPU through signal lines. The invention further provides a marine fuel oil supply method. By means of the marine fuel oil supply device and method, heavy oil or diesel oil or gas oil is provided for a power generator of a ship, the fuel oil amount, pressure and viscosity can be adjusted according to needs, and the marine fuel oil supply device and method have the beneficial effects that the fuel oil quality is improved, the fuel oil efficiency is improved, the fuel oil cost is reduced, and the engine is better protected.

The invention discloses a combined desulphurization and denitration device and method of a marine diesel engine. The exhaust gas of the diesel engine is divided into two paths, wherein one path enters a denitration channel A and is recirculated to an air cylinder to participate in burning so as to lower the NOx emission of an engine; the other path enters a desulphurization channel B and is discharged to ambient atmosphere after being subjected to desulphurization processing. In the denitration channel A, the exhaust gas flows through components including a one-way stop valve, a Venturi scrubber, a cooler, a cleaning device, a blower and the like, particles and SO2 in the exhaust gas are removed through processing processes including pre-washing, cooling, washing, pressurizing and the like, and finally, the exhaust gas is mixed with fresh air from the intake channel of the diesel engine to enter the air cylinder and participate in burning; in the desulphurization channel B, the exhaust gas is discharged into the environment atmosphere after being subjected to particle removal by washing tower desulphurization. The Tier III requirement of IMO (International Maritime Organization) on marine fuel sulphur content and NOx emission in the exhaust gas can be met, and meanwhile, the corrosion and the abrasion on an engine compressor, a cylinder liner and the like by the exhaust gas can be lowered.

A marine engine fuel system provides a low pressure lift pump to draw fuel from a fuel tank and cause the fuel to flow into a reservoir and a high pressure fuel pump which draws fuel from the reservoir and provides it to a fuel rail. An inlet conduit of the high pressure fuel pump is provided with a primary and a secondary opening. The secondary opening can be an orifice formed through a wall of the inlet conduit. The secondary opening is positioned, relative to the primary opening, at a location which assists in controlling the fuel level within the reservoir and the quantity of gaseous fuel contained within an ullage above the liquid pool of fuel.

The invention discloses marine fuel oil. The fuel oil comprises the following components in percentage by weight: 45 to 68.0 percent of normal and reduced pressure slag oil, 15 to 30 percent of wax oil, 10 to 13 percent of diesel oil and 7 to 12 percent of oil slurry. The marine fuel oil provided by the invention accords with the work characteristic of a dredging engineering ship, various technical indexes meet the related requirements of national standard and international standard, environmental pollution caused by waste gas discharged by a ship is reduced and a series of problems occurringin the process of using the fuel oil by the dredging engineering ship are avoided.

A fuel vapor separator assembly including a housing having an open interior and a float disposed therein. At least one magnet is disposed on the float, and a sensor assembly which is responsive to magnetic fields is disposed externally of the housing. The sensor assembly senses the position of the float to determine whether vapor is present in the fuel vapor separator. If the sensor assembly determines that vapor is present in the fuel vapor separator, then it generates a signal, which a controller receives and activates a vapor vent valve to discharge the vapor and/or activates a fuel lift pump to pump additional fuel into the fuel vapor separator. The sensor assembly could be, for example, a Hall effect sensor or a reed-type sensor.

Low sulphur marine fuel compositions are provided. Embodiments comprise greater than 50 to 90 wt% of a residual hydrocarbon component, with the remaining 10 to 50 wt% selected from a non-hydroprocessed hydrocarbon component, a hydroprocessed hydrocarbon component, and a combination thereof. Embodiments of the marine fuel composition can have a sulphur content of about 0.1 wt% or less.

The invention relates to a heavy fuel oil asphaltene dispersant. According to the technical scheme, the heavy fuel oil asphaltene dispersant is prepared from the following raw materials in parts by weight: 10-50 parts of ester, 20-60 parts of alkyl benzene sulfonic acid, 5-20 parts of fatty alcohol-polyoxyethylene ether and 10-30 parts of solvent, wherein the ester is one of carboxylic esters of RCOOCH3, R is straight-chain alkyl and the quantity of carbon atoms is 10-16; the alkyl benzene sulfonic acid is one of RSO3H, wherein R is an alkyl carbon chain and the quantity of carbon atoms is 12-18; the general formula of the fatty alcohol-polyoxyethylene ether is RO(CH2CH2O)mH, wherein R is straight-chain alkyl the quantity of carbon atoms is 10-18 and m is 7-11; the solvent is absolute ethyl alcohol. The heavy fuel oil asphaltene dispersant has the beneficial effects that the problem of sedimentation of marine fuel oil asphaltene can be solved, not only can sedimentation of the asphaltene in the fuel oil be prevented, but also the settled asphaltene in the fuel oil can be dispersed; meanwhile, the marine fuel oil asphaltene dispersant provided by the invention has the characteristics of being good in dispersibility, low in cost and simple and convenient to use.

Low-sulfur heavy bunker fuel oil and a preparation method of same. The invention belongs to the technical field of heavy fuel oil. The low-sulfur heavy bunker fuel oil comprises, by weight, 40-65 parts of residual oil, 5-15 parts of catalytic oil slurry, 5-20 parts of styrene tar, 5-20 parts of ethylene tar, 5-20 parts of diesel oil, 0.2-1 part of an additive OP-10, and 0.1-0.5 parts of an additive AES. The preparation method includes: successively adding the styrene tar and diesel, the additive OP-10, the additive AES, the residual oil, and the catalytic oil slurry, and stirring the mixture at medium speed, and adding the ethylene tar and performing high-speed stirring to obtain the fuel oil. The invention solves the problems that the product is liable to generate flocs and to coke duringuse since the styrene tar cannot be uniformly blended with other oil products.