摘要:
The invention provides an integrated process for processing heavy oil, wherein the integrated process at least comprises: solvent deasphalting is carried out for heavy oil material, and de-oiled asphalt phase is mixed with dispersing agent and then entered a thermal cracking reactor to undergo thermal cracking reactions. Upgraded oil can be obtained through the mixture of the de-asphalted oil and thermal cracking oil separated from thermal cracking reaction products. The solvent and heavy gas oil , which are separated from the thermal cracking reaction products, are respectively recycled back to the solvent deasphalting process as solvent and as mixed feed to remove asphaltene. The integrated process of the present invention solves the problems that solvent is difficult to be separated from asphalt with high softening point in solvent deasphalting process and hard asphalt is difficult to be transported, and oil component that can be extracted from so that the heavy oil doesn't need thermal reaction, which is beneficial for guaranteeing the stability of the products and improving yield of the upgraded oil, and the API gravity will be increased greatly, the carbon residue value, C7 asphaltene and metal content will be decreased obviously, the removal rate of the asphaltene can higher than 96%, the removal rate of metals of nickel and vanadium can up to 80-90%, and also beneficial for producing hydro-upgrading oil with significantly improved production quality.
摘要:
A process is disclosed for recovering 1-butene from a feed stream comprising n-butane, isobutane and butene isomers using a single, divided wall distillation column. The disclosed process includes introducing the feed steam into an inlet of a first side of a distillation column, wherein the distillation column comprises a top, a bottom and a center dividing wall extending between the bottom and the top of the column and dividing the column into the first side and a second side. The process includes taking off an isobutane stream from the top of the second side of column, taking off a 1-butene stream as a bottoms stream from the second side of the column, and taking off a combination 2-butene and n-butane stream as a bottom stream from the first side of column.
摘要:
The present invention relates to a method for producing lower olefins by the pyrolysis of hydrocarbons, wherein said method comprises the following steps: heating and evaporating the starting raw material; mixing the same with a gaseous diluent; performing a thermal pyrolysis in a vaned reactor using the heat which is generated in the mixture volume by the hydrodynamic braking action of the vanes rotating therein; and cooling down the pyrolysis products before separating them. The mixture is heated at the pyrolysis temperature by mixing it with the pyrolysis hot gases circulating in the working chamber of the vaned reactor for a period of time which is negligible relative to the duration of the pyrolysis reaction. This method increases the yield of lower olefins.
摘要:
A method and apparatus for cracking heavy hydrocarbons for example petroleum oil or coal tar. The reactor (13) comprises an outer spherical pressure vessel (111) and an inner vessel (112) within the outer vessel. The inner vessel has an open bottom end (17). The cracking reaction takes place in the inner vessel and the products leave through the open bottom end. The reaction is inhibited in the outervessel since the contents are maintained at a temperature insufficient to sustain the cracking reaction. The product is withdrawn, either continuously or intermittently via an outlet (118 or 123). The coke produced may be fluidised in the outer vessel or may be allowed to settle. The inner vessel may be rotated slowly about its vertical axis and high pressure fluid jets directed at its surface to dislodge coke deposited on the inside and outside wall. The reactor may be used in a system for the simultaneous distillation and thermal cracking of crude oil. Feedstock (31) is fed to a flash-settler (11) having three sections (21,23,25). Liquid is withdrawn from the first section (25) and fed to a reactor (13) via a heater (12). The reaction products are quenched to inhibit cracking by means of a cooling stream (36) prior to their introduction to the third section (21) of the flash-settler. Coke is removed from the third section as a slurry (37). Gases flashed off from the feedstock and from the reaction products are fed to a distillation column (14) where they are separated. Liquid from the second section (23) is either removed as product, allowed to overflow into the first section (25) to be recycled, or fed to a reduced pressure column (51) in which heavy gas oil may be removed as a product (53). The top product (56) is fed to the distillation column, the bottom product is recycled to the reactor via the heater.
摘要:
A process for the continuous thermal cracking of hydrocarbon oils, which comprises preheating (2) the hydrocarbon oil feed (1) and causing the hot feed to flow upwards through a soaking vessel (4) in which the feed has an average residence time between 5 min. and 60 min. In orderto achieve a good residence time distribution of the hydrocarbon oil feed, the soaking vessel comprises at least 2 mixing stages. To obtain the desired amount of mixing stages internals, preferably perforated plates (5), are installed in the soaking vessel. In this way more stable cracked residues are obtained.
摘要:
The invention provides a system for continuous processing of heavy fuel oil from recycling waste oil and the processing residues of crude oil into useful products comprising means for feeding waste oil; at least one hot-gas filter, at least one condenser, at least one rotating kiln comprising an outer stationary jacket which forms a heating channel, and an inner rotating reactor, and means for removing solid coke from the rotating reactor; wherein the at least one hot gas filter is configured to separate a naphtha/gasoil fraction after the processing of the heavy fuel oil from a soft coke fraction; and wherein the rotating reactor is configured to recover a solid coke fraction comprising high contaminant content. The invention further relates to a process for continuous processing of heavy fuel oil from recycling waste oil and the processing residues of crude oil into useful products, preferably with the system of the invention. Moreover, the invention relates to use of the products and waste products produced with the process and system of the invention.
摘要:
A method for thermally cracking a hydrocarbonaceous feed (2) wherein the feed is first processed in an atmospheric thermal distillation step (31) to form a light gasoline (35) and atmospheric residuum (37) mixture (2). The light.gasoline/residuum combination is gasified at least. in part in a vaporization step (11), and the gasified product (25) of, the vaporization step is thermally cracked (1).
摘要:
Apparatus is disclosed herein for reducing engine nitrogen oxide emissions by mixing hydrogen prepared from a portion or all of engine fuel within a simple burner. The apparatus includes an insulated burner (10) having an internal combustion chamber (17, 40) for receiving either a portion of or all the gaseous fuel or liquid fuel for mixture with air and subsequent ignition by a spark plug (27). The chamber is within a feed preheater assembly. A mixing chamber (17, 40) is included having a series of baffles (22, 23, 32, 37) against which injected air and fuel vapor impinge causing thorough and complete air/fuel blending into a mixture subsequently ignited and burned, and then discharged into the combustion chamber of the engine itself. The pre-heating assembly (15, 31) raises the temperature of the incoming air/fuel mixture via a heat exchanging process with post combusted gases from the combustion chamber. The apparatus improves operability and performs by conserving energy by insulating the total burner, placing the burner section within the feed preheater assembly, and locating the feed mixture flow of the preheater adjacent to the outer insulation (12); and hydrogen output may be increased by reaction between carbon monoxide and water produced by the main reaction or added separately.