293results about "Hydrocarbon distillation control/regulation" patented technology

A process for hydrotreatment of a hydrocarbon feed comprises at least two reaction steps with intermediate fractionation of the effluent from the first step to eliminate unwanted impurities for the catalyst of the second step and to produce a desulphurized light liquid fraction. The intermediate fractionation comprises stripping the liquid effluent from the first step using low pressure hydrogen with rectification of the stripping vapours using a substantially desulphurized liquid reflux. The conditions for said fractionation and for the first hydrotreatment step can produce a substantially desulphurized light liquid fraction which is not supplied to the second step.

The present invention relates to a method of refining crude tall oil. According to the method, the crude tall oil is fed into a column distiller, where it is separated into desired fractions. The conditions of the column distiller are adjusted on the basis of the composition of the feed and the product flow. According to the present invention, the densities of the crude tall oil fed into the column distiller and of at least one product flow are measured accurately as a function of the temperature. The density values are compared with correlation coefficients derived from the chemical compositions of the flows, coefficients which are obtained on the basis of laboratory analyses made earlier from corresponding flows, by using temperature compensation to specify the correlations, and by taking account of the regular variation in the wood composition of fresh wood according to the annual cycle and, as a result, the compositions of the flows are achieved. The present invention decreases the number of chemical analyses and improves the uniformity of the products.

A method of optimizing system parameters in a crude unit to reduce corrosion and corrosion byproduct deposition in the crude unit is disclosed and claimed. The method includes measuring or predicting properties associated with the system parameters and using an automated controller to analyze the properties to cause adjustments in the chemical program to optimize the system parameters. Adjusting the system parameters effectively controls corrosion in the crude unit by reducing the corrosiveness of a fluid in the process stream and/or by protecting the system from a potentially corrosive substance. System parameter sensing probes are arranged at one or more locations in the process stream to allow accurate monitoring of the system parameters in the crude unit.

A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituents from the base oil recovered from the waste lubricating oil mixture and thereafter treating the lower quality base oil constituents to produce marketable base oil. The total base oil produced from a waste lubricating oil mixture by this process is greater than the quantity producible by previous processes using only base oil separation from the waste lubricating oil mixture or processes which use only treatment of the base oil recovered from the waste lubricating oil mixture to produce the product base oil.

A system and method for distillation of a liquid sample at atmospheric pressure for the improved prediction of the heating necessary before the initial boiling point (IBP) of the sample is detected regardless of sample composition to ensure the IBP is observed within certain time constraints. A plurality of infrared (IR) sensors provides real-time temperature control in addition to a conventional measurement of vapor temperature. One IR-sensor monitors the liquid sample temperature in the distillation flask to obtain a corrected IBP time independent of the sample properties. Another IR-sensor monitors the temperature of the rising vapor column as the vapor rises up the neck of the distillation flask. Alternatively, an IR matrix may monitor the temperature of the rising vapor column. The system and method expand the scope of samples analyzed with improved signal, reproducibility, and test accuracy and still remain within the prescribed limits of a selected standard.

The invention provides a highly-efficient energy-saving atmospheric and vacuum deep distillation process based on clear cut. According to the invention, after first-section heat transfer of crude oil, the content of a fore-cut fraction with the temperature lower than the feeding temperature of primary distillation in primary distillation tower bottom oil is reduced to less than 1% to 3% through additional arrangement of a deep distillation stripper plate at the bottom of a primary distillation tower; after second-section heat transfer of the primary distillation tower bottom oil, the content of the fore-cut fraction with the temperature lower than the feeding temperature of primary distillation in the primary distillation tower bottom oil is reduced to less than 3% to 5% through additional arrangement of a flash tower at the front of an atmospheric furnace; flash oil enters an atmospheric tower for separation by pumping after being heated to 365 DEG C to 390 DEG C through the atmospheric furnace; through desuperheating rectification section and circulating reflux separation of partial hot heavy diesel, an initial boiling point of heavy diesel is controlled to be higher than 360 DEG C, and the gapping temperature of 5 DEG C or above is formed with 98% of second side stream of a diesel distillate, so the content of the fore-cut fraction with the temperature lower than 365 DEG C in atmospheric residual oil is reduced to less than 2% through additional arrangement of the deep distillation stripper plate at the bottom of the atmospheric tower; and by damp distillation of vacuum residual oil, the content of the fore-cut fraction with the temperature lower than a cut point in the vacuum residual oil is reduced to 5% or below through additional arrangement of the deep distillation stripper plate at the bottom of a vacuum tower.

The invention relates to a hot high-pressure hydrogen gas stripping separation method of solid-containing hydrocarbon hydrogenated products. The method is suitable for a separation process of reaction products of coal liquefication, oil-coal corefining, heavy oil suspension bed or fluidized bed hydrogenation, coal tar suspension bed or fluidized bed hydrogenation and the like, is capable of reducing the corrosive component quantity in oil S1L after the hot high-pressure separation and reducing the low-boiling-point component quantity, and can lower the temperature of the oil S1L and increase the viscosity of the oil S1L by utilizing the heat absorption during flash evaporation; and the properties of the hot high-pressure separated gas are changed due to more low-boiling-point hydrocarbon components contained in the gas. The changes of the properties of the hot high-pressure separated oil refer to S1L quantity reduction, corrosivity reduction, heavy component concentration increase and temperature reduction. When being used for separating the coal liquefication reactor products, the method enhances the oil product separation efficiency in the hot high-pressure separation process, reduces the cavitation and erosion speeds of the flow passage components in the oil S1L pressure reduction process, lowers the load and medium corrosivity in the oil S1L fractional distillation process, and enhances the solid removal efficiency.

The invention discloses a catalytic cracking slurry oil solid content removal method.The method comprises the following steps that 1, heat pretreatment is conducted on catalytic cracking slurry oil; 2, vacuum distillation is conducted on the catalytic cracking slurry oil subjected to heat pretreatment, and solid removal slurry oil distillate oil is obtained.According to the catalytic cracking slurry oil solid content removal method, heat pretreatment is conducted on the slurry oil before distillation is conducted so as to enable micron or submicron solid particles in the slurry oil to aggregate and grow up, and the solid particles can stay in distillation residues more easily, so that the solid content in the slurry oil distillate oil is reduced, and the solid content of the slurry oil distillate oil is further reduced on the basis of simple distillation operation.The catalytic cracking slurry oil solid content removal method is easy to operate and high in removal efficiency, adaptability to raw materials is high, influence factors are few, the cost is low, and industrialization is easy.

The invention provides an experimental device of superheated steam distillation of thickened oil. The experimental device comprises a steam generation unit, a heating unit, a metering unit, a distillation kettle, a liquid phase collecting unit and a gaseous phase collecting unit, wherein the steam generation unit is communicated with the heating unit; the heating unit is communicated with the metering unit; the distillation kettle is provided with a feeding hole, a liquid phase outlet and a gaseous phase outlet; the metering unit is communicated with the feeding hole of the distillation kettle; the liquid phase outlet of the distillation kettle is communicated with the liquid phase collecting unit; the gaseous phase outlet of the distillation kettle is communicated with the gaseous phase collecting unit. The invention also provides an experimental method of superheated steam distillation of thickened oil. The experimental device is adopted for the experimental method. The experimental device and the experimental method of the superheated steam distillation of the thickened oil are capable of realizing stable equilibrium distillation in a laboratory and accurately obtaining a distillation rate and a distillation product and also capable of correcting a state equation; as a result, the contribution of the distillation effect of water steam in the steam injection oil extraction process can be obtained.

Turbine fuel provided for large-scale land based turbines used by utilities for producing electricity and desalinated water, and for large mobile engines and turbines in marine and remote applications where only liquid fuels are available. Use results in less corrosion, ash formation and emissions (NOx, SOx, CO2 and noxious metals) than firing contaminated heavy crude, refinery residual oils or high sulfur fuel oils. Manufacture is by decontaminating crude oils, non-conventional crudes, and other highly contaminated feeds. Each fuel is produced as a single product of unit operations, not ex-plant blend of various refinery products, yet using an apparatus configuration less complex than conventional crude oil refining. These fuels can be fired by advanced high efficiency turbines of combined cycle power plants having hot flow paths and heat recovery steam generation systems susceptible to corrosion, which systems cannot otherwise risk contaminated heavy crudes or refinery residual oils feeds.

The method for optimizing and controlling pressure in gas-oil separation plants utilizes a genetic algorithm-based control method for controlling pressure in each stage of a multi-stage gas-oil separation plant to optimize oil production parameters. A neural network simulation model is used with an optimization procedure to provide on-line operation optimization of the multi-stage gas-oil separation plant. Pressure set points of each stage are automatically and continuously adjusted in the presence of fluctuating ambient temperatures and production rates to ensure optimal oil recovery and optimal quality of the produced oil.