19 results about "Alkylation unit" patented technology

The invention discloses a waste sulfuric acid treatment method and device, the device comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank and a membrane separator which are connected in sequence, and the fine filtration coalescer adopts a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube as a filter material; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material; and the membrane separation system adopts one or a combined membrane of more than two of an ultrafiltration membrane, a reverse osmosis membrane and an electrodialysis membrane. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; according to the method, a physical separation means is adopted, organic polymeric oil, dissolved organic matters, dissolved salts and other impurities in the alkylated waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The invention discloses a waste sulfuric acid treatment method and system. The system comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank, a gas stripping tower, an alkaline washing tower, a molecular sieve dehydration device and a gas medium heating facility, a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube is adopted as a filter material of the fine filtering coalescer; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; a physical separation means is adopted, organic polymeric oil, dissolved organic matter, dissolved salt and other impurities in the alkylation waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The application discloses an alkylation device with a circulating refrigerant impurity removal function, which comprises an alkali washing assembly, a water washing assembly, a depropanizing tower and a deisobutane tower; the alkali washing assembly and the water washing assembly are connected in series on a circulating refrigerant feeding conveying pipe; a water washing assembly discharge port is in pipeline communication with a depropanizing tower feeding inlet; and a depropanizing tower lower discharge port is in pipeline communication with a deisobutane tower feeding inlet. The device can remove SO2, sulfides such as mercaptans and free water in the circulating refrigerant of the alkylation device, thereby effectively reducing the plugging frequency of the depropanizing tower, improving the propane removal efficiency of the alkylation device system, avoiding the increase of the content of propane in the system, maintaining a better alkylene ratio in the circulating material and improving the quality of the obtained isooctane product.

According to the effluent pump for the alkylation device, a gap between a throat shaft sleeve and a throat lining, a gap between a first-stage shell wear ring and a first-stage impeller wear ring, a gap between an interstage shaft sleeve and an interstage lining and a gap between a balance shaft sleeve and a balance sleeve are arranged; and gaps between the secondary shell wear ring and the secondary impeller wear ring are modified, so that heat generated by an overflowing part can be dissipated in an accelerated manner, the situation that equipment is damaged due to the fact that a rotating part and the wear rings are heated to expand and stick to each other due to short-time flow insufficiency is effectively avoided, and meanwhile, the service life of the equipment is prolonged. And the situation that equipment is damaged due to local overheating caused by partial flow channel blockage due to too small interstage gaps of large-particle impurities carried in a medium can be avoided.

The utility model relates to the technical field of petrochemical engineering, and discloses a pressure relief pipeline device for reducing the operating pressure of a deisobutanizer, which comprises a deisobutanizer return tank and a compressor liquid separation tank, and further comprises a tank body internally provided with a mounting area; the bearing frame is arranged on the inner side of the tank body and located in the mounting area of the tank body; the spiral cooling component is arranged on the bearing frame and located in the mounting area of the tank body, a feeding pipe is further arranged on the spiral cooling component, the other end of the feeding pipe is communicated with the deisobutanizer return tank, and an isobutane gas-liquid mixture output by the deisobutanizer return tank can enter the spiral cooling component through the feeding pipe and is cooled through the spiral cooling component. And gaseous isobutane is converted into liquid isobutane under the cooling action of the spiral cooling component. The pressure relief pipeline device for reducing the operating pressure of the deisobutanizer aims at solving the problems that a deisobutanizer in an existing alkylation device is too high in operating pressure, large in energy consumption and limited in flexibility.

The invention relates to the technical field of alkylation reaction, in particular to an alkylation device multi-objective optimization method which comprises the following steps: constructing an alkylation reactor model by adopting a convolutional neural network; constructing a concentrated sulfuric acid catalyst consumption model; constructing an alkylation device process simulation model by using process simulation software; constructing an economic model and a carbon emission model; and based on the economic model and the carbon emission model, performing multi-objective algorithm iterative optimization on the alkylation device process simulation model by taking the minimum total cost of the alkylation device and the minimum carbon dioxide emission as optimization objectives. According to the method, collaborative optimization of the whole process of the sulfuric acid method alkylation device under the optimization goal of economy and carbon emission minimization can be achieved, the non-convergence condition and iteration time of iterative calculation are greatly reduced, and the method has theoretical guiding significance on analysis and optimization of global operation of the alkylation device.

The present application relates to the technical field of aviation gasoline, and discloses unleaded aviation gasoline and a preparation method thereof.The unleaded aviation gasoline comprises: 75-85 wt% of polymethylbenzene, and 15-25 wt% of at least two of alkylate, a side line distillation component of an alkylate device, light naphtha and isopentane; wherein the motor octane number of the polymethylbenzene is not less than 108.The product quality index of the unleaded aviation gasoline meets the standard of the American Society for Testing and Materials, that is, the technical requirement of ASTM D7719-2018 high-aromatic unleaded aviation gasoline.The unleaded aviation gasoline has the characteristics of good component continuity, stable combustion and high motor octane number, and meets the high-standard use requirement of unleaded and high-octane aviation gasoline.

The utility model belongs to alkylated oil desulfurization technical field especially relates to a rectifying assembly for rectifying column, including rectifying column, support, the support is installed in the outer surface of rectifying column, the rectifying column outside is provided with tower top backflow mechanism, the feed inlet of rectifying column is linked together with the bottom of de -n butane column, is used for receiving the fractionating oil of de -n butane column bottom. The rectifying assembly for rectifying column, by setting rectifying column body, tower top backflow structure, can be in the top of rectifying column and distill the low sulfur content product alkylated oil of more than 95% of de -n butane column bottom fraction, only need to handle the distillate of 5% or so rectifying column tower bottom, greatly reduced the processing capacity, is favorable to the smooth operation of alkylated device, and the influence of other index to alkylated oil is little, simultaneously, when the sulfur content of fractionating oil is low, can stop rectifying column operation, realized energy -conserving.

This invention discloses a special metal corrosion inhibitor for the "D212 tower of an alkylation unit," comprising: ammonium bicarbonate, sodium benzoate, sodium nitrite, sodium molybdate, hexamethylenetetramine, ammonia, ethylenediamine, ethanolamine, ethanol, and deionized water. The metal corrosion inhibitor contains 5-31% ammonium bicarbonate, 10-16% sodium benzoate, 0-3% sodium nitrite, 12-15% sodium molybdate, 13% hexamethylenetetramine, 0-22.5% ammonia, and 12.5-22.5% ethylenediamine. A metal corrosion inhibitor specifically for the "D212 tower of an alkylation unit" and its preparation method are described below. The method involves first weighing deionized water and adding it to a clean enamel-lined reactor; then, while stirring, adding ammonium bicarbonate, sodium benzoate, sodium nitrite, sodium molybdate, hexamethylenetetramine, ammonia, ethanolamine, and ethanol in sequence; finally, adding ethylenediamine; stirring for 2 hours after addition, and checking for any insoluble matter; then filtering and packaging. Under the same conditions, compared with similar purchased products, the weight loss of this invention is only one-tenth of that of similar products on the market, demonstrating significant anti-corrosion effect. The price difference is nearly tenfold.

Embodiments of systems and methods may include inputting data indicative of one or more spectra or properties of feedstock to be fed into an alkylation unit into a machine learning model trained on historical equipment specific data of an alkylation unit, upstream processes that supply feedstock to the alkylation unit, the feedstocks supplied to the alkylation unit, and products of the alkylation unit. Further, systems and methods may include inputting a target product property for a product desired from the alkylation unit into the machine learning model and generating parameters, by the machine learning model, for operation of the alkylation unit to enable production of the product desired from the alkylation unit based on the target product property for a product desired from the alkylation unit into the machine learning model.

The present application relates to the technical field of petroleum refining, in particular to a iso-octane component and a preparation method thereof. The preparation method comprises the following steps: (1) feeding the material into a n-butane column in a STRATCO process, and fractionating in the n-butane column to obtain a component containing n-butane, a light component and a heavy component; (2) flash removing the component with a distillation point temperature not higher than 30 DEG C from the light component to obtain a component after flashing; (3) mixing the component after flashing with the heavy component obtained in step (1) at a weight ratio of 1:1-15; the content of the component with a distillation range of 15-80 DEG C in the light component is not less than 50%; and the content of the component with a distillation range of 80 DEG C-203 DEG C in the heavy component is not less than 90%. The present application can produce high-value iso-octane components with qualified quality, and the alkylation device load can be operated at 100%, which has very considerable economic benefits. The present application can adjust the product structure in real time according to market demand, has high flexibility and broad industrial popularization prospect, and has high economic and social benefits.

The invention provides a multi-objective optimization method for a C4 alkylation hydrogenation reaction process, which takes maximization of butadiene conversion rate and minimization of reactor cost as optimization objectives, takes inlet temperature, inlet hydrogen molar flow and plug flow reactor volume of a plug flow reactor as decision variables, and sets operation constraints and safety constraints. Carrying out multi-objective optimization by adopting a multi-objective evolutionary algorithm (EAG-MOEA / D algorithm) guided by an external file to generate a Pareto solution set representing a tradeoff relationship between the butadiene conversion rate and the reactor cost; and then determining the optimal process parameter value with the highest comprehensive score from the Pareto solution set according to the weight of each index by adopting an entropy weight method, thereby effectively improving the comprehensive performance of the alkylation device, reducing the production cost and realizing high-quality production on the premise of ensuring the process safety.

The present application relates to a kind of alkali consumption reduction sulphur alkylization device system and method, is in the traditional sulphur alkylization process basis, in the front of waste acid cracking furnace, an acid gas buffer tank is set, the acid gas containing a small amount of SO2 in refrigerant tank top, a small amount of SO2 containing gas phase isobutane in reflux tank top, a small amount of acid containing light hydrocarbon volatilized in waste acid storage tank top and gas phase light hydrocarbon removed in top of light hydrocarbon removal column are collected;The waste acid degassing tank is associated with compressor system, and the gas phase light hydrocarbon volatilized in waste acid degassing tank is recovered in the inlet of compressor system first stage.The present application not only handles acid-containing gas, but also saves the natural gas required for cracking waste acid, no longer uses the alkali washing step of traditional process, reduces the energy consumption of device, reduces the alkali consumption and processing loss rate of device, with good economic benefits.

The invention discloses a waste sulfuric acid treatment method and device, the device comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank, a vacuum-pumping system and an alkaline washing tower which are connected in sequence, and the vacuum-pumping system comprises a concentration kettle and a vacuum pump; a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube is adopted as a filter material of the fine filtering coalescer; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; according to the method, a physical separation means is adopted, organic polymeric oil, dissolved organic matters, dissolved salts and other impurities in the alkylated waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

A method for converting an HF alkylation unit comprising an HF clarifier into an ionic liquid alkylation system, the method comprising: a) providing an ionic liquid-specific subsystem comprising an ionic liquid alkylation reactor and an ionic liquid separator; and b) connecting the ionic liquid alkylation reactor to the HF clarifier to feed an alkylation reactor effluent from the ionic liquid alkylation reactor to the HF clarifier, the HF clarifier being configured to separate the alkylation reactor effluent into a hydrocarbon phase and an ionic liquid phase; and c) connecting the HF clarifier to the ionic liquid separator to feed the hydrocarbon phase from the HF clarifier to the ionic liquid separator.

The application discloses a raw material pretreatment feeding device for an alkylation reaction, which comprises a heavy C4 storage tank, a light C4 storage tank, a heavy C4 conveying pump, a light C4 conveying pump, a first digital flow meter and a second digital flow meter. The discharge port of the heavy C4 storage tank is connected with a first pipe, and the first digital flow meter and the heavy C4 conveying pump are arranged on the connecting pipeline at intervals. The discharge port of the light C4 storage tank is connected with the feeding port pipeline of a hydrogenation reactor, and the light C4 conveying pump and the second digital flow meter are arranged on the connecting pipeline at intervals. The device can effectively ensure the stable product quality, reduce the load rate of a butane supplement assembly, avoid frequent load increase and decrease or start and stop of the butane supplement assembly, reduce the comprehensive energy consumption of the alkylation device, and avoid catalyst poisoning and deactivation in the hydrogenation reactor for alkylation raw material pretreatment.

Systems and processes to produce hydrocarbon products are described. A system can include a heavy hydrocarbon processing unit, a steam cracking, and a gaseous hydrocarbon separation unit coupled to the crude oil processing unit and the steam cracking unit. The gaseous hydrocarbon separation unit can separate naphtha, C4 hydrocarbons, and C2-C3 hydrocarbons from a gaseous hydrocarbon composition having a boiling temperature of less the 200° C. produced by the heavy hydrocarbon processing unit. The naphtha and C4 hydrocarbons can be stored. The C2-C3 hydrocarbons can be processed in the steam cracking unit to produce petroleum hydrocarbon products. The steam cracking unit can be indirectly coupled to an alkylation unit, a methyl t-butyl ether production unit, and / or a butene hydrogenation unit.

The utility model provides a permanent violet alkylation device capable of stably dropwise adding bromoethane, which relates to the technical field of permanent violet preparation systems and comprises a reaction kettle, a stable feeding component and a liquid caustic soda elevated tank, a feeding port is further arranged on the reaction kettle, the stable feeding component comprises a bromoethane storage part, a conveying part and a feeding pipe, and a cooling coil is arranged outside the bromoethane storage part. An outlet of the liquid caustic soda head tank is connected with an inlet of the reaction kettle, an outlet of the bromoethane storage part is connected with an inlet of the conveying part, an outlet of the conveying part is connected with an inlet of the feeding pipe, the feeding pipe is connected with the reaction kettle, and the bottom of the feeding pipe is located at the lower part of the reaction kettle; during alkylation reaction, bromoethane is cooled through the cooling coil outside the bromoethane storage part, bromoethane gasification is avoided, then liquid-phase bromoethane is stably and dropwise added and conveyed to the bottom of the liquid phase in the reaction kettle through the conveying part and the feeding pipe, and the situation that the bromoethane cannot be added into the reaction kettle due to pressure rise in the reaction kettle, so that the reaction kettle is more stable is avoided. The alkylation reaction yield is improved.