52 results about "Petroleum processor" patented technology

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 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 is a two-stage heavy oil catalytic cracking conversion method and device, belonging to petroleum refining process and device technical field, separating heavy oil reaction course into top and bottom reacting regions, making raw oil and regenerated catalyst firstly contact and react with each other in the bottom reacting region and successively separating the carbon deposit deactivated catalyst from reacting oil; making the oil gas go up into the second reacting region to mix with the catalyst used in gasoline reaction and continue reaction; a heavy oil reactor is connected in parallel with gasoline reacting part; the gasoline and catalyst complete reaction in the gasoline reactor and then make gas-solid separation in gasoline settler, where the oil gas is discharged through pipeline and the extracted catalyst is fed into pre-rising stages below the first and second heavy oil reacting regions to continue taking part in heavy reaction; a catalyst return pipe is arranged between the pre-rising stages of the gasoline settler and gasoline reactor to make a part of catalyst used in gasoline reaction return to the bottom of the gasoline reactor, so as to take part in gasoline reaction. And it can obviously raise efficiency of heavy oil reactor, improve product quality and need not consume energy because of catalyst change.

The invention belongs to the technical field of petrochemical equipment and particularly provides a high-temperature corrosion inhibitor for oilfield exploitation and a petroleum refining process. The high-temperature corrosion inhibitor is prepared from raw materials in parts by weight as follows: a raw material group A: 6-8 parts of ricinolic acid and 2-4 parts of stearic acid; a raw material group B: N-methyldiethanolamine, triethanolamine and industrial white oil, wherein the weight of N-methyldiethanolamine is 0.18-0.2 times that of the raw material group A, the weight of triethanolamine is 0.06-0.08 times that of the raw material group A, and the weight of the industrial white oil is 0.35-0.4 times that of the raw material group A. The high-temperature corrosion inhibitor has the corrosion inhibition rate of about 97% and has the advantages of being good in corrosion inhibiting effect, non-irritant, safe, reliable, safe and stable in the production use operation process, environment-friendly and the like. According to the preparation method, performance of the raw materials is comprehensively considered, and the high-temperature corrosion inhibitor with more stable performance and more excellent corrosion inhibition effects can be obtained.

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 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.