44 results about "Petroleum refining processes" patented technology

A continuous process to upgrade heavy crude oil for producing more valuable crude feedstock having high API gravity, low asphaltene content, and high middle distillate yield, low sulfur content, low nitrogen content, and low metal co teat without external supply of hydrogen and / or catalyst. Heavy crude oil having substantial amount of asphaltene and heavy components is mixed with highly waxy crude oil having large amount of paraffinic components and water to decompose asphaltene compounds and remove sulfur, nitrogen, and metal containing substances under supercritical conditions. Product has higher API gravity, lower asphaltene content, high middle distillate yield, lower sulfur content, lower nitrogen content, and lower metal content to be suitable for conventional petroleum refining process.

Preparing solid biomass particles for catalytic conversion includes agitating solid biomass particles and providing a biomass-catalyst mixture to a conventional petroleum refinery process unit. The biomass-catalyst mixture includes the solid biomass particles and a catalyst. Agitating solid biomass particles includes flowing a gas to provide a velocity to at least a portion of the solid biomass particles sufficient to reduce their sizes. Co-processing a biomass feedstock and a conventional petroleum feedstock includes liquefying at least a portion of a biomass-catalyst mixture and co-processing at least a portion of the liquefied biomass feedstock and a conventional petroleum feedstock in a conventional petroleum refinery process unit. The biomass feedstock includes a plurality of solid biomass particles and a catalyst, which is liquefied to produce a liquefied biomass feedstock.

This invention relates to a method for recovering and utilizing waste heat in oil refining including: 1, a high temperature hot water system recovers waste heat of all high temperature level and part of low temperature level and a low temperature hot water system recovers residual low temperature waste heat at a source part, 2, a heat trap part is divided into a stable part and an unstable part, the stable trap is taken as the main part of the high temperature hot water system and the unstable one is taken as the main part of the low temperature hot water system, 3, hot water is cooled to a stipulated temperature by a cooling system then sent to the source part to collect heat before returning to the source part.

The present invention relates to a trifunctional catalyst used in catalytic cracking device in petroleum refining industry and a method for preparing the same. The trifunctional catalyst of the invention comprises absorbent, cerium dioxide and vanadium pentoxide acting as oxidative catalyst and cerium oxyfluoride acting as structural promoter. The oxidative catalyst and structural promoter are dispersed over the absorbent. The absorbent is spinel-based composite oxides having a general formula of MgAl2-xFexO4.yMgO, where the x is 0.01-0.5 and y is 0.2-1.2. In the trifunctional catalyst, the raw material for forming the chemical compound containing rare-earth cerium is hamartite powder. The method for preparing the trifunctional catalyst of the invention is shown as follows: the components relating to the preparation of the finished product are dissolved or dispersed into liquid materials; then the trifunctional catalyst is obtained after the mixing, drying and calcining of such liquid materials. The trifunctional catalyst of the invention is used for highly efficient absorption and desorption of sulfoxides contained in the catalytic cracking flue gas regenerated in the process of petroleum refining, the combustion promoting of carbon monoxide and the reduction of nitrogen oxides. Furthermore, the method for preparing such trifunctional catalyst is featured for its lower cost.

The present invention discloses a descaling agent used for a hydrogenation device and the preparation method and the application thereof, and solves the coking and scale deposition of the relevant equipment during the petroleum refining process, such as a hydrogenation device reactor, a heating furnace, and a heat exchanger. The general formula of the hydrogenation descaling agent is shown as the formula (1), wherein, R is C8-C20 alkyl; R2 is H, R1 is C1-C24 alkyl, alkoxy or aryl; or both R1 and R2 are C1-C15 alkyl, alkoxy or aryl. Through adopting the descaling agent of the invention, notonly the coking and scale deposition can be inhibited, but also the production is simple and easy, and the descaling agent is harmless to the environment.

The invention discloses a method and a device for catalytic cracking of a riser in a petroleum refining process, which are mainly used to solve the problems of poor catalytic effect in the second half of the existing riser reactor, intensified thermal cracking reaction, and the like. The present invention adopts a two-stage riser reactor, the semi-regenerated catalyst and raw oil (401) with higher temperature from the first regenerator (10) enter the bottom of the riser reactor (3), and along the first reaction section (301) carry out catalytic cracking reaction upward; Introduce the regenerated catalyst from the lower temperature of the second regenerator (14) through the catalyst inlet (304) in the middle of the riser reactor (3), and from the first reaction section (301) The upward catalyst is mixed with oil and gas, enters the second reaction section (302) and continues upward to carry out the catalytic cracking reaction. The invention is mainly used for catalytic cracking processing of petroleum heavy distillates to improve the distribution of cracked products and the quality of cracked gasoline in catalytic cracking units.

The invention relates to the field of alkylation assorted waste acid recycling devices in the petroleum refining process and in particular relates to a system for solving ultrahigh gas temperature of a dynamic wave furnace of a waste acid recycling device. The system comprises a dynamic wave gas-liquid separator, a filler washing tower and an electric defogger which are connected through a pipeline; the system is characterized in that furnace gas firstly enter a dynamic wave exchange column; the dynamic wave exchange column is connected with one or more reversed injection pipes; a nozzle control valve is arranged on each reversed injection pipe and used for controlling the pressure of the reversed injection pipe; the reversed injection pipes are connected with the dynamic wave gas-liquid separator through a dynamic wave dilute acid pump; the furnace gas enters the dynamic wave gas-liquid separator and carries out gas-liquid separation, then the furnace gas enters the filler washing tower to be washed and cooled, finally the furnace gas enters the electric defogger and removes the residual acid fog. The system is capable of reducing the temperature of a furnace gas outlet of a dynamic wave scrubber, facilitating long-period and safe operation of the device, improving the treatment capacity of the device, reducing the dilute acid treatment capacity and reducing sewage treatment load and cost.

The invention is a composition that is suitable for reducing sulfur species from products produced by petroleum refining processes, especially gasoline products produced by fluidized catalytic cracking (FCC) processes. The composition comprises zeolite, yttrium, and at least one element selected from the group consisting of zinc, magnesium and manganese, wherein the yttrium and element are present as cations. The yttrium and zinc are preferably present as cations that have been exchanged onto the zeolite. The zeolite is preferably a zeolite Y.

The invention provides an underground heat insulation air-suspended bed reactor which is suitable for a heavy oil hydrogenation lightweighting technology, a hydrogenation direct liquidation technology for coal and biomass and a mixing coprocessing lightweighting machining technology for coal, biomass and heavy oil in a petroleum refining process and a high-temperature and high-pressure chemical reaction process of other fluid materials.

The invention discloses an adaptive control method for the liquid level of a fractionation tower in the petroleum refining process. In this method, the reverse error neural network and extreme value optimization method are used as adaptive tools, and the predictive PI control strategy is designed in combination with the input and output of the actual operation process. The present invention first uses the data acquisition device to collect the past input and output of the system, and then designs an extreme value optimization algorithm as a solver to adjust the weight of the neural network online, thereby efficiently and accurately training the neural network; after satisfying the set error constraints, The trained neural network weight is used as the identification parameter of the system, and a system model close to the actual situation is established. Finally, the predictive PI control is designed to control the liquid level of the fractionation tower in the process of petroleum refining. By adopting the method of the invention, the interference of model mismatch to the system can be effectively relieved, the control performance is improved, and the application of advanced control in industrial process control is also promoted.

The invention relates to a quick-dry fog sealing layer material, which is formed by the following components: 20wt percent to 40wt percent of asphalt-recycling agent, and 5wt percent to 25wt percent of complex solubilizer, wherein the asphalt-recycling agent is formed by deasphalted oil, heavy aromatic oil and additives; the additives are selected from at least one of the following compounds: dibutyl phthalate, epoxidized soybean oil, chlorinated methoxy fatty acid ester and parabens; the mass ratio of the deasphalted oil to the heavy aromatic oil to the additives is 1:0.1 to 1:0.05 to 0.5. The invention also relates to a preparation method and application of the quick-dry fog sealing layer material. According to the quick-dry fog sealing layer material, the heavy aromatic oil and the like during the petroleum refining process are utilized to form the asphalt-recycling agent so as to obtain the fog sealing layer material with high additional value, so that the quick-dry fog sealing layer material can play a role in preventing aging and regenerating on aged asphalt pavements. In addition, according to the quick-dry fog sealing layer material provided by the invention, the maintenance time at low temperature is only 2 to 4h, which is shortened by over half the time for sealing and maintaining of the existing fog sealing layer material.

The invention discloses a smoke filter equipment used in petroleum refining process. Its structure includes a filter body, a filter plate assembly cover plate, a power on and off controller, a support base plate, and a miscellaneous box. The filter body is a cuboid, and the right side of the front end is inlaid The filter plate assembly cover is fastened, and the support bottom plate is welded on the front and rear sides of the bottom. The mechanism composed of springs, gears, chains, electromagnets, etc. enables the equipment to automatically switch between multiple spare filter plates at regular intervals, and can automatically lower and retract the front filter plates when switching to use, so that when the equipment is in use It can better prevent the filter drop, clogging and flue gas recirculation caused by the long-term use of the filter plate. It can also replace and clean the filter plate during work, and can perform secondary filtration, and can filter the impurities in the secondary filter. Automatic collection for ease of use.

The invention discloses a smoke dust purification device for a petroleum refining process. A structure of the smoke dust purification device for the petroleum refining process comprises an air suctioncover, a device sealing cover, a smoke dust purification chassis, a control panel, anti-slip supporting legs, a control button, a power indicator light, a purification device shell, a fixing flange,a universal suction arm, and an air volume adjusting valve. The smoke dust purification device for the petroleum refining process realizes that the smoke dust purification device for the petroleum refining process is provided with the air volume adjusting valve, and smoke dust purification device for the petroleum refining process can adjust air inlet amount of the suction arm when being used, avoids excessive smoke entering the device to reduce purification quality, avoid impurities entering the inside of the device through the suction arm when not in use, effectively prolongs the service life of the device, and improves the practicality of the device.

The invention discloses smoke filtration equipment for a petroleum refining process. The smoke filtration equipment structurally comprises a main smoke treatment device, equipment scaffolds, a filterresidue outlet, a smoke inlet pipe, a conveying and connecting pipe, an induced draft fan, an induced draft fan servo motor, a reflux retreatment device, an exhaust chimney and an electric control cabinet; the six equipment scaffolds are arranged below the main smoke treatment device and is vertically connected by electrowelding; the filter residue outlet is formed below the right of the front surface of the main smoke treatment device; and the smoke inlet pipe is arranged in the center of the left side of the main smoke treatment device and is vertically connected by electrowelding. Due to the arrangement of the reflux retreatment device, the treated smoke is detected, and smoke treated not to reach the standard can be automatically subjected to reflux retreatment, so that dust dischargedinto the atmospheric environment is kept to be gases reaching the standard, the environment is protected, and the environment friendliness of the smoke filtration equipment for a petroleum refining process is effectively improved.

This invention relates to a method for recovering and utilizing waste heat in oil refining including: 1, a high temperature hot water system recovers waste heat of all high temperature level and part of low temperature level and a low temperature hot water system recovers residual low temperature waste heat at a source part, 2, a heat trap part is divided into a stable part and an unstable part, the stable trap is taken as the main part of the high temperature hot water system and the unstable one is taken as the main part of the low temperature hot water system, 3, hot water is cooled to a stipulated temperature by a cooling system then sent to the source part to collect heat before returning to the source part.

The invention discloses a method based on improving the recovery efficiency of the petroleum refining process. The mixed wax oil and the atmospheric residual oil are respectively sent from the raw material tank of the tank farm to the static mixer in the device and mixed evenly, then enter the raw material buffer tank, and then Pump it out with a raw material pump, pass through the flow control valve, return to exchange heat, and then exchange heat with oil slurry to 170-220°C, and enter the static mixer together with the refined oil to mix evenly. Together, they enter the riser through six feed nozzles, contact with the high-temperature regenerated catalyst from the second secondary, and immediately vaporize, crack into light products and generate oil slurry, dry gas and coke. The process strictly controls the reaction and regeneration process, so that the obtained product meets the quality, improves the precision of refining, and improves the utilization rate of oil.

The invention relates to the technical field of boilers, in particular to a boiler internal pressure control system for petroleum processing, which includes a boiler body and a feed pipe fixedly installed on the upper side of the boiler body for feeding raw materials into the boiler body and discharging materials. The pipe is fixedly installed at the lower end of the boiler body for discharging processed waste materials, and the distribution pipe is fixedly installed at the other side of the upper end of the boiler body for taking out different types of products produced during the petroleum refining process. A cavity is opened inside the boiler body, a metal plate is fixedly installed inside the cavity, and an electromagnetic heating device body is also installed at the bottom of the boiler body. In the present invention, after the pressure inside the boiler body increases, the controller will control the power of the electromagnetic heating device body to decrease, thereby reducing the calorific value of the metal plate, thereby preventing the temperature inside the cavity from continuing to rise.

A system for sealing an unheading or isolation valve in a petroleum refining process. Some aspects relate to a bellows seal for preventing leakage of petroleum product and steam within the valve. Some aspects relate to a restrictor for restricting the motion of a dynamic seat relative to a seat base structure.