CN104650952B - A kind of soaker visbreaking heat time of staying estimating and measuring method and reaction unit - Google Patents
A kind of soaker visbreaking heat time of staying estimating and measuring method and reaction unit Download PDFInfo
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Abstract
The invention discloses a kind of soaker visbreaking heat time of staying estimating and measuring method and reaction unit, belong to petrochemical industry. Described heat time of staying estimating and measuring method includes: raw oil adds Visbreaking reactor and passes into gas; Heating Visbreaking reactor makes raw oil carry out visbreaking reaction, and reaction temperature is identical with soaker visbreaking with pressure, and collects light gas oil; Visbreaking oil in Visbreaking reactor and light gas oil are mixed to get visbreaking after terminating and generate oil by reaction; Contrast visbreaking generates the kinematic viscosity of oil and industry visbreaking oil, and when kinematic viscosity relative difference is within the scope of setting, the response time is the industry visbreaking heat time of staying. Described reaction unit includes: Visbreaking reactor, heating furnace, condenser, receptor and pressure controller, by estimating the visbreaking heat time of staying and the result of laboratory visbreaking optimization, Optimal improvements for industrial tower viscosity breaking plant process conditions and commercial plant provides foundation, meets research and production demand.
Description
Technical field
The present invention relates to technical field of petrochemical industry, particularly to a kind of visbreaking heat time of staying estimating and measuring method.
Background technology
At petrochemical industry, for the full-bodied raw oil residual oil of some heavys or crude oil, mostly need to carry out visbreaking reaction, its objective is to make heavy high viscosity feedstock oil to be converted into the oil of relatively low viscosity and relatively low pour point by either shallow heat cracking reaction, to reach the specification requirement of fuel oil, or it is close to the specification of fuel oil. Visbreaking is raw oil either shallow thermal cracking process, and the process of industry visbreaking reaction includes: first, by heating furnace by raw oil heating to high temperature and reaction tower inlet temperature; Then, through being located at the reaction zone in reaction tower, under suitable temperature, pressure condition, the thermal cracking relaxed is carried out; Subsequently, heat cracking reaction is made to terminate to injection quench oil in the raw oil of thermal cracking; Finally, will generate separating of oil is industry visbreaking oil.
Existing industry visbreaking reaction is mostly Delayed Visbreaking, namely main visbreaking reaction carries out in reaction tower, in actual production, except the chemical property of raw oil, the principal element affecting visbreaking reaction responds temperature, response time and reaction pressure, wherein reaction temperature and response time also exist complementary relationship, the method between high temperature, short time or the long method of low temperature can be adopted to reach identical conversion ratio, wherein the response time in industry visbreaking reaction refers both to raw oil cold time of staying in reaction tower, namely raw oil is left out the time of staying under reactive state in reaction tower, wherein the hot time of staying at the reaction temperatures of the raw oil in reaction tower is less than the described cold time of staying.
In the process realizing the present invention, inventor have found that prior art at least there is problems in that
Prior art can only be determined in the reaction tower Raw oily hot time of staying at the reaction temperatures less than raw oil cold time of staying in reaction tower, and concrete calculating or method for measuring are not had for the reaction tower Raw oily hot time of staying at the reaction temperatures, cannot learn how long the reaction tower Raw oily hot time of staying at the reaction temperatures is, for the raw oil that chemical property is different, the method between high temperature, short time or the long method of low temperature can only be rule of thumb selected to carry out industry visbreaking reaction, and not can determine that the reaction temperature and response time that this kind of raw oil is specifically suitable for, typically result in the reaction temperature that the temperature of reaction tower is required far above industry visbreaking reaction, or cause that the response time exceeds well over the response time that industry visbreaking reaction is required, it is unfavorable for the optimization of industry viscosity breaking technology condition, add the cost of industry visbreaking reaction, reduce the service life of reaction tower.
Summary of the invention
The problem of the raw oil heat time of staying at the reaction temperatures in reaction tower cannot be estimated in vis-breaking process in order to solve prior art, the invention provides a kind of soaker visbreaking heat time of staying estimating and measuring method. Described technical scheme is as follows:
On the one hand, it is provided that a kind of soaker visbreaking heat time of staying estimating and measuring method, described soaker visbreaking heat time of staying estimating and measuring method includes:
It is same that raw materials used oil phase is reacted in step 1: added by raw oil in Visbreaking reactor, described raw oil and industry visbreaking;
Step 2: injecting gas in described Visbreaking reactor, the mol ratio that the injection rate of described gas reacts water injection rate with industry soaker visbreaking is 1:1, makes the reaction pressure in described Visbreaking reactor identical with the reaction pressure that industry soaker visbreaking reacts;
Step 3: under described reaction pressure, first by described Visbreaking reactor with the heating rate of 1��5 DEG C per minute to 350 DEG C, then described Visbreaking reactor was heated within 1��3 minute to reaction temperature initial value, described raw oil is made to carry out visbreaking reaction, described visbreaking course of reaction can produce light gas oil, described light gas oil is cooled down and collects;
Step 4: set the response time of described visbreaking reaction, and by described response time setting value, the reaction temperature of described Visbreaking reactor is down to reaction temperature end value, then the temperature of described Visbreaking reactor was reduced to 350 DEG C within 1��2 minute, and make described Visbreaking reactor continue cooling, when the temperature of described Visbreaking reactor drops to below 100 DEG C, oily for the visbreaking obtained and described light gas oil is mixed to get visbreaking generates oil in described Visbreaking reactor;
Step 5: contrast described visbreaking and generate the oily kinematic viscosity 50 DEG C or 100 DEG C of industrial visbreaking that oily and described industry soaker visbreaking is obtained by reacting, if described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil within setting scope, then the response time that described raw oil carries out visbreaking reaction at described Visbreaking reactor is the raw oil hot time of staying in industry soaker visbreaking reaction tower; If described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil not within setting scope, then adjust described response time setting value repeat the above steps.
Further, in described step 2, described gas is at least one in noble gas, nitrogen, methane, ethane, propane, butane, carbon dioxide.
Further, in described step 3, described reaction temperature initial value is more than or equal to 360 DEG C.
Further, described reaction temperature initial value is identical with the temperature of described industry soaker visbreaking reaction tower entrance.
Further, in described step 4, described reaction temperature end value is identical with the temperature of described industry soaker visbreaking reaction tower outlet.
Further, in described step 4, described response time setting value is less than the cold time of staying of described industry soaker visbreaking reaction.
Further, in described step 5, it is the difference absolute value with the ratio of described industry visbreaking oil kinematic viscosity that described visbreaking generates oily and described industry visbreaking oil kinematic viscosity that described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil, and the setting of described kinematic viscosity relative difference ranges for 0��2.0%.
On the other hand, provide a kind of soaker visbreaking reaction unit, described soaker visbreaking reaction unit includes: Visbreaking reactor, heating furnace, condenser, receptor and pressure controller, described Visbreaking reactor is arranged on above described heating furnace, described heating furnace is for heating to described Visbreaking reactor, described Visbreaking reactor, described condenser is internal with described receptor to be connected, described pressure controller is arranged on above described receptor, during work, light gas oil in described Visbreaking reactor enters described receptor through described condenser, when the pressure in described Visbreaking reactor exceedes reaction pressure, fixed gas in described receptor is discharged through described pressure controller, make the pressure in described Visbreaking reactor identical with described reaction pressure.
Further, described soaker visbreaking reaction unit also includes ftercompction mouth, and described ftercompction mouth is arranged on described Visbreaking reactor top.
Further, described soaker visbreaking reaction unit also includes light gas oil outlet, and the outlet of described light gas oil is arranged on described receptor bottom, and light gas oil is flowed out from described receptor by the outlet of described light gas oil.
The technical scheme that the embodiment of the present invention provides has the benefit that
The present invention simulates industry soaker visbreaking reaction by experiment, and contrast the visbreaking generation oil obtained and industry visbreaking oil kinematic viscosity at the same temperature, and visbreaking generates oil and industry visbreaking oil kinematic viscosity relative difference within the scope of setting, can accurately estimate the visbreaking course of reaction Raw oil hot time of staying in reaction tower, the different material optimal reaction temperature of oil and response time can be deduced according to the method for the estimation raw oil heat time of staying simultaneously, and reaction temperature and the response time of visbreaking reaction are controlled as optimal reaction temperature and response time, reduce unnecessary temperature, decrease unnecessary heat time heating time, optimize the operation of visbreaking reaction, reduce the cost of industry visbreaking reaction, ensure that the service life of reaction tower, and can according to the optimization experiment result of visbreaking reaction, design is suitable for the viscosity breaking plant of different material oil, there is provided foundation for the optimization of industry viscosity breaking plant process conditions and the upgrading of commercial plant, reach the effect of Optimal improvements equipment, meet the demand of research and production.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of soaker visbreaking heat time of staying estimating and measuring method flow chart that the embodiment of the present invention provides;
Fig. 2 is a kind of soaker visbreaking reaction unit structural representation that further embodiment of this invention provides;
Wherein, 1 Visbreaking reactor, 2 heating furnaces, 3 condensers, 4 receptors, 5 pressure controllers, 6 ftercompction mouths, 7 light gas oil outlets.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
As it is shown in figure 1, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, described soaker visbreaking heat time of staying estimating and measuring method includes:
Step 1: raw oil is added in Visbreaking reactor, for ensureing that the present invention estimates the accuracy of time, the raw oil that described raw oil reacts used with industry soaker visbreaking is identical;
Step 2: inject gas in described Visbreaking reactor, the mol ratio that the injection rate of described gas reacts water injection rate with industry soaker visbreaking is 1:1, namely gas is identical with the amount of substance of industry water filling, ensure that reaction pressure in described Visbreaking reactor is identical with the reaction pressure that industry soaker visbreaking react, namely the oil gas dividing potential drop in Visbreaking reactor react with industrial visbreaking in oil gas dividing potential drop identical;
Step 3: give described Visbreaking reactor with the heating rate of 1��5 DEG C per minute to 350 DEG C by heating furnace, because when reaction temperature is not higher than 350 DEG C, cracking reaction will not be there is in raw oil, then proceed to heat to Visbreaking reactor, the temperature making Visbreaking reactor quickly rose to industry visbreaking reaction tower inlet temperature within 1��3 minute, and record the initial time that visbreaking reaction starts, producing light gas oil in visbreaking course of reaction, light gas oil enters receptor after condenser cools down;
Step 4: set the response time of described visbreaking reaction, and the reaction temperature of described Visbreaking reactor is uniformly down to reaction temperature end value according to response time setting value, the time controlling visbreaking reaction carries out the cold time of staying of industry soaker visbreaking reaction less than raw oil, when reaction temperature is down to the outlet temperature of industry soaker visbreaking reaction tower, the time that record cracking reaction terminates, then within 1��2 minute, rapidly the temperature of Visbreaking reactor is reduced to 350 DEG C, and make Visbreaking reactor continue cooling, when the temperature of Visbreaking reactor drops to below 100 DEG C, the visbreaking obtained in Visbreaking reactor oil is mixed with the light gas oil in receptor, and obtain visbreaking generation oil,
Step 5: contrast and described visbreaking is generated the oily kinematic viscosity 50 DEG C or 100 DEG C of industrial visbreaking that oily and described industry soaker visbreaking is obtained by reacting, when described visbreaking generates oil and industry visbreaking oil when the kinematic viscosity relative difference of 50 DEG C or 100 DEG C is not within the scope of setting, adjust response time setting value, and repeat above-mentioned reactions steps, until described visbreaking generates oil and industry visbreaking oil at the kinematic viscosity relative difference of 50 DEG C or 100 DEG C within the scope of setting, then described Visbreaking reactor Raw oil soaking time is the prior art raw oil hot time of staying in industry soaker visbreaking reaction tower.
The present invention simulates industry visbreaking reaction by experiment, and contrast the visbreaking generation oil obtained and industry visbreaking oil kinematic viscosity at the same temperature, and visbreaking generates oil and industry visbreaking oil kinematic viscosity relative difference at the same temperature within the scope of setting, can accurately estimate the visbreaking course of reaction Raw oil hot time of staying in reaction tower, the different material optimal reaction temperature of oil and response time can be deduced according to the method for the estimation raw oil heat time of staying simultaneously, and reaction temperature and the response time of visbreaking reaction are controlled as optimal reaction temperature and response time, reduce unnecessary temperature, decrease unnecessary heat time heating time, optimize the operation of visbreaking reaction, reduce the cost of industry visbreaking reaction, ensure that the service life of reaction tower, and can according to the optimization experiment result of visbreaking reaction, design is suitable for the viscosity breaking plant of different material oil, there is provided foundation for the optimization of industry viscosity breaking plant process conditions and the upgrading of commercial plant, reach the effect of Optimal improvements equipment, meet the demand of research and production.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, in described step 2, described gas is noble gas, nitrogen, methane, ethane, propane, butane, at least one in the gas that carbon dioxide etc. will not react in Visbreaking reactor, pass into gas identical with the reaction pressure that industry soaker visbreaking reacts for the pressure ensureing in Visbreaking reactor, reduce as much as possible the present invention when visbreaking is reacted with industry soaker visbreaking react between error, ensure that the accuracy that the visbreaking reaction heat time of staying is estimated by the present invention.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, in described step 3, the initial value of described reaction temperature is more than or equal to 360 DEG C, raw oil can occur visbreaking to react more than 360 DEG C, when ensureing that the initial value of described reaction temperature is more than or equal to 360 DEG C, it may be determined that visbreaking reaction starts.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, described reaction temperature initial value is identical with industry soaker visbreaking reaction tower inlet temperature, can ensure that reaction temperature of the present invention is identical with industry soaker visbreaking reaction temperature, reduce as much as possible the present invention when visbreaking is reacted with industry soaker visbreaking react between error, it is ensured that the accuracy that the visbreaking reaction heat time of staying is estimated by the present invention.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, in described step 4, described reaction temperature end value is identical with described industry visbreaking reaction tower outlet temperature, and reaction temperature is uniformly down to reaction temperature end value from reaction temperature initial value, reduce as much as possible the present invention when visbreaking is reacted with industry visbreaking react between error, it is ensured that the accuracy that the visbreaking reaction heat time of staying is estimated by the present invention.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, in described step 4, due to the visbreaking reaction heat time of staying necessarily less than the cold time of staying of visbreaking reaction, so described response time setting value is less than the cold time of staying of industry soaker visbreaking reaction.
Further, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, in described step 5, it is the difference absolute value with the ratio of described industry visbreaking oil kinematic viscosity that described visbreaking generates oily and described industry visbreaking oil kinematic viscosity that described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil, and the setting of described kinematic viscosity relative difference ranges for 0��2.0%.
Further, described industry visbreaking oil is the miscella of all liq product after industry soaker visbreaking reaction.
Embodiment 2
As shown in Figure 2, embodiments provide a kind of soaker visbreaking reaction unit, described soaker visbreaking reaction unit includes: Visbreaking reactor 1, heating furnace 2, condenser 3, receptor 4 and pressure controller 5, Visbreaking reactor 1 is arranged on above heating furnace 2, heating furnace 2 is for heating to Visbreaking reactor 1, Visbreaking reactor 1, condenser 3 is internal with receptor 4 to be connected, pressure controller 5 is arranged on above receptor 4, during work, light gas oil in Visbreaking reactor 1 enters receptor 4 through described condenser 3, when the pressure in Visbreaking reactor 1 exceedes reaction pressure, fixed gas in receptor 4 is discharged through pressure controller 5, make the pressure in Visbreaking reactor 1 identical with reaction pressure.
Further, described soaker visbreaking also includes ftercompction mouth 6, and described ftercompction mouth 6 is arranged on Visbreaking reactor 1 top.
Further, described soaker visbreaking device also includes light gas oil outlet 7, and described light gas oil outlet 7 is arranged on receptor 4 bottom, and after visbreaking reaction terminates, light gas oil is flowed out from described receptor 4 by described light gas oil outlet 7.
During work, raw oil is added Visbreaking reactor 1, heating furnace 2 is used to heat to Visbreaking reactor 1, wherein, the temperature that can control Visbreaking reactor 1 by regulating heating furnace 2 raises, constant or cooling, raw oil carries out visbreaking reaction in Visbreaking reactor 1, visbreaking course of reaction generates light gas oil, and light gas oil enters in receptor 4 after condenser 3 cools down, pressure controller 5, ftercompction mouth 6 is provided commonly for controlling the pressure in reaction unit, when the pressure in reaction unit is more than reaction pressure, pressure controller 5 is opened, fixed gas in reaction unit is discharged from reaction unit, until when the pressure in reaction unit is equal to reaction pressure, pressure controller 5 is closed, when the pressure in reaction unit is less than reaction pressure, ftercompction mouth 6 is opened, described gas enters reaction unit by ftercompction mouth, until when the pressure in reaction unit is equal to reaction pressure, ftercompction mouth 6 is closed, after reaction terminates, by the visbreaking oil in Visbreaking reactor 1 and the light gas oil mix homogeneously in receptor 4, obtain visbreaking and generate oil.
Embodiment 3
As it is shown in figure 1, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, described soaker visbreaking heat time of staying estimating and measuring method includes:
Certain Petrochemical Enterprises soaker visbreaking device, reaction tower inlet temperature is 370 DEG C, outlet temperature 360 DEG C, pressure 0.7MPa, the mass ratio of water injection rate and raw oil is 0.7:100, the raw oil cold time of staying in reaction tower is 90 minutes, and raw oil character is in Table 1, and raw oil is 781.4mm at the kinematic viscosity of 100 DEG C2/ s, industry visbreaking oil is 420.9mm at the kinematic viscosity of 100 DEG C2/s��
Visbreaking reactor adds and raw oil identical used by above-mentioned reaction, and to nitrogen injection in Visbreaking reactor, the mol ratio of the injection rate of nitrogen and industry water injection rate is 1:1, namely nitrogen is (0.7/18 �� 28) with the mass ratio of raw oil: 100, i.e. 1.09:100, make the pressure in Visbreaking reactor identical with the pressure that industry visbreaking is reacted, it is 0.7MPa, open heating furnace Visbreaking reactor is heated up with the speed of 3 DEG C per minute, when the temperature of Visbreaking reactor reaches 350 DEG C, adjust heating furnace and rapidly the temperature of Visbreaking reactor be increased to 370 DEG C with 1.5 minutes, and start condenser, control 80 minutes response time, less than the industry visbreaking cold time of staying, adjust heating furnace, the temperature making Visbreaking reactor is cooled to 360 DEG C by the every 8 minutes speed of 1 DEG C, then with 0.8 minute, temperature in Visbreaking reactor is reduced to 350 DEG C, slow cooling is to 80 DEG C again, visbreaking oil in Visbreaking reactor is mixed homogeneously with the light gas oil in accepter and obtains visbreaking generation oil, and measuring this visbreaking, to generate oil at the kinematic viscosity of 100 DEG C be 230.5mm2/ s, with industry visbreaking residue at the kinematic viscosity 420.9mm of 100 DEG C2/ s compares, and it is 45.2% more than 2.0% that visbreaking generates oil and industry visbreaking oil at the kinematic viscosity relative difference of 100 DEG C, then adjust the response time and repeat above-mentioned reactions steps.
In the same way, carrying out visbreaking reaction by 40 minutes response time, measuring the oily kinematic viscosity at 100 DEG C of visbreaking generation obtained is 695.1mm2/ s, with industry visbreaking oil at the kinematic viscosity 420.9mm of 100 DEG C2/ s compares, and it is 65.1% more than 2.0% that visbreaking generates oil and industry visbreaking oil at the kinematic viscosity relative difference of 100 DEG C, then adjust the response time and repeat above-mentioned reactions steps.
When respectively 80 minutes and the 40 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 230.5mm that oil is at 100 DEG C2/ s and 695.1mm2/ s, industry visbreaking oil is 420.9mm at the kinematic viscosity of 100 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 63.6 minutes, and is carry out visbreaking reaction in 64 minutes by the response time, and measuring the obtained oily kinematic viscosity at 100 DEG C of visbreaking generation is 363.6mm2/ s, with industry visbreaking oil at the kinematic viscosity relative difference 13.6% of 100 DEG C more than 2.0%, then adjusts the response time and repeats above-mentioned reactions steps.
When respectively 64 minutes and the 40 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 363.6mm that oil is at 100 DEG C2/ s and 695.1mm2/ s, industry visbreaking oil is 420.9mm at the kinematic viscosity of 100 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 60.2 minutes, and is carry out visbreaking reaction in 60 minutes by the response time, and measuring the obtained oily kinematic viscosity at 100 DEG C of visbreaking generation is 419.3mm2/ s, is 0.4% with the oily kinematic viscosity relative difference at 100 DEG C of industry visbreaking, and less than 2%, then the estimation heat time of staying of this industry visbreaking reaction tower is 60 minutes.
| Analysis project | Decompression residuum |
| Density (20 DEG C) | 1016.0Kg/m3 |
| Kinematic viscosity (100 DEG C) | 781.4mm2/s |
| Colloid | 30.51% |
| Asphalitine | 3.98% |
| Carbon residue | 14.1% |
Table 1
Embodiment 4
As it is shown in figure 1, embodiments provide a kind of soaker visbreaking heat time of staying estimating and measuring method, described soaker visbreaking heat time of staying estimating and measuring method includes:
Certain Petrochemical Enterprises soaker visbreaking device, reaction tower inlet temperature is 415 DEG C, outlet temperature 405 DEG C, pressure 0.8MPa, the mass ratio of water injection rate and raw oil is 0.8:100, the raw oil cold time of staying in reaction tower is 41.7 minutes, and raw oil character is in Table 2, and raw oil is 2574mm at the kinematic viscosity of 100 DEG C2/ s, industry visbreaking oil is 1256.5mm at the kinematic viscosity of 50 DEG C2/s��
Visbreaking reactor adds and raw oil identical used by above-mentioned reaction, and in Visbreaking reactor, inject methane, the mol ratio of the injection rate of methane and industry water injection rate is 1:1, the mass ratio of namely for methane and raw oil is (0.8/18 �� 16): 100, i.e. 0.71:100, make the pressure in Visbreaking reactor identical with the pressure that industry visbreaking is reacted, it is 0.8MPa, open heating furnace Visbreaking reactor is slowly heated up with the speed of 5 DEG C per minute, when the temperature of Visbreaking reactor reaches 350 DEG C, adjust heating furnace and rapidly the temperature of Visbreaking reactor is increased to 415 DEG C with 3.0 minutes, and start condenser, control 40 minutes response time, less than the industry visbreaking cold time of staying, adjust heating furnace, the temperature making Visbreaking reactor is cooled to 405 DEG C by the every 4 minutes speed of 1 DEG C, then rapidly temperature in Visbreaking reactor was reduced to 350 DEG C with 1.8 minutes, slow cooling is to 90 DEG C again, visbreaking oil in Visbreaking reactor is mixed homogeneously with the light gas oil in accepter and obtains visbreaking generation oil, and measuring this visbreaking, to generate oil at the kinematic viscosity of 50 DEG C be 990.2mm2/ s, with industry visbreaking oil at the kinematic viscosity 1256.5mm of 50 DEG C2/ s compares, visbreaking generate oil with industry visbreaking oil at the kinematic viscosity relative difference of 50 DEG C more than 2.0%, then adjust the response time and repeat above-mentioned reactions steps.
In the same way, carrying out visbreaking reaction by 30 minutes response time, measuring the oily kinematic viscosity at 50 DEG C of visbreaking generation obtained is 1148.3mm2/ s, with industry visbreaking oil at the kinematic viscosity 1256.5mm of 50 DEG C2/ s compares, visbreaking generate oil with industry visbreaking oil at the kinematic viscosity relative difference of 50 DEG C more than 2.0%, then adjust the response time and repeat above-mentioned reactions steps.
When respectively 40 minutes and the 30 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 990.2mm that oil is at 50 DEG C2/ s and 1148.3mm2/ s, industry visbreaking oil is 1256.5mm at the kinematic viscosity of 50 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 23.2 minutes, and is carry out visbreaking reaction in 23 minutes by the response time, and measuring the obtained oily kinematic viscosity at 50 DEG C of visbreaking generation is 1287.7mm2/ s, with industry visbreaking oil at the kinematic viscosity relative difference of 50 DEG C still greater than 2.0%, then challenge response time repeat the above steps again.
When respectively 30 minutes and the 23 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 1148.3mm that oil is at 50 DEG C2/ s and 1287.7mm2/ s, industry visbreaking oil is 1256.5mm at the kinematic viscosity of 50 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 24.4 minutes, and is carry out visbreaking reaction in 24 minutes by the response time, and measuring the obtained oily kinematic viscosity at 50 DEG C of visbreaking generation is 1257.9mm2/ s, is 0.1% with the oily kinematic viscosity relative difference at 50 DEG C of industry visbreaking, and less than 2%, then the estimation heat time of staying of this industry visbreaking reaction tower is 24 minutes.
| Analysis project | Decompression residuum |
| Density (20 DEG C) | 1028.0Kg/m3 |
| Kinematic viscosity (100 DEG C) | 2574mm2/s |
| Colloid | 23.06% |
| Asphalitine | 10.77% |
| Carbon residue | 18.67% |
Table 2
Embodiment 5
As it is shown in figure 1, embodiments provide a kind of visbreaking heat time of staying estimating and measuring method, described estimating and measuring method includes:
Certain Petrochemical Enterprises soaker visbreaking device, reaction tower inlet temperature is 425 DEG C, outlet temperature 410 DEG C, pressure 0.5MPa, the mass ratio of water injection rate and raw oil is 0.5:100, the raw oil cold time of staying in reaction tower is 60.6 minutes, and raw material oil properties is in Table 3, and raw oil is at the kinematic viscosity 122mm of 100 DEG C2/ s, industry visbreaking oil are 24.23mm at the kinematic viscosity of 100 DEG C2/s��
Visbreaking reactor adds and raw oil identical used by above-mentioned reaction, and in Visbreaking reactor, inject ethane, the mol ratio of the injection rate of ethane and industry water injection rate is 1:1, namely ethane is (0.5/18 �� 30) with the mass ratio of raw oil: 100, i.e. 0.83:100, make the pressure in Visbreaking reactor identical with the pressure that industry visbreaking is reacted, it is 0.5MPa, open heating furnace Visbreaking reactor is heated up with the speed of 5 DEG C per minute, when the temperature of Visbreaking reactor reaches 350 DEG C, adjust heating furnace and rapidly the temperature of Visbreaking reactor be increased to 425 DEG C with 2.6 minutes, and start condenser, control 50 minutes response time, less than the industry visbreaking cold time of staying, adjust heating furnace, the temperature making Visbreaking reactor is cooled to 410 DEG C by the every 5 minutes speed of 1.5 DEG C, then with 1.6 minutes, temperature in Visbreaking reactor is reduced to 350 DEG C, slow cooling is to 80 DEG C again, visbreaking oil in Visbreaking reactor is mixed homogeneously with the light gas oil in accepter and obtains visbreaking generation oil, and measuring this visbreaking, to generate oil at the kinematic viscosity of 100 DEG C be 15.6mm2/ s, with industry visbreaking oil at the kinematic viscosity 24.23mm of 100 DEG C2/ s compares, visbreaking generate oil with industry visbreaking oil at the kinematic viscosity relative difference of 100 DEG C more than 2.0%, then adjust the response time and repeat above-mentioned reactions steps.
In the same way, carrying out visbreaking reaction by 20 minutes response time, measuring the oily kinematic viscosity at 100 DEG C of visbreaking generation obtained is 48.25mm2/ s, with industry visbreaking oil at the kinematic viscosity 24.23mm of 100 DEG C2/ s compares, visbreaking generate oil with industry visbreaking oil at the kinematic viscosity relative difference of 100 DEG C more than 2.0%, then adjust the response time and repeat above-mentioned reactions steps.
When respectively 50 minutes and the 20 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 15.6mm that oil is at 100 DEG C2/ s and 48.25mm2/ s, industry visbreaking oil is 24.23mm at the kinematic viscosity of 100 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 42.1 minutes, and is carry out visbreaking reaction in 42 minutes by the response time, and measuring the obtained oily kinematic viscosity at 100 DEG C of visbreaking generation is 22.12mm2/ s, with industry visbreaking oil at the kinematic viscosity relative difference of 100 DEG C still greater than 2.0%, then challenge response time repeat the above steps again.
When respectively 42 minutes and the 20 minutes time of staying of heat, measure obtained visbreaking and generate the kinematic viscosity respectively 22.12mm that oil is at 100 DEG C2/ s and 48.25mm2/ s, industry visbreaking oil is 24.23mm at the kinematic viscosity of 100 DEG C2/ s, speculates according to linear interpolation method, the heat time of staying should be 40.2 minutes, and is carry out visbreaking reaction in 40 minutes by the response time, and measuring the obtained oily kinematic viscosity at 100 DEG C of visbreaking generation is 23.99mm2/ s, is 0.9% with the oily kinematic viscosity relative difference at 50 DEG C of industry visbreaking, and less than 2%, then the estimation heat time of staying of this industry visbreaking reaction tower is 40 minutes.
| Analysis project | Decompression residuum |
| Density (20 DEG C) | 0.9207Kg/m3 |
| Kinematic viscosity (100 DEG C) | 122mm2/s |
| Colloid | 33% |
| Asphalitine | 0.2% |
| Carbon residue | 7.8% |
Table 3
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a soaker visbreaking heat time of staying estimating and measuring method, it is characterised in that described soaker visbreaking heat time of staying estimating and measuring method includes:
It is same that step 1: added by raw oil in Visbreaking reactor, described raw oil and industry soaker visbreaking react raw materials used oil phase;
Step 2: injecting gas in described Visbreaking reactor, the mol ratio that the injection rate of described gas reacts water injection rate with industry soaker visbreaking is 1:1, makes the reaction pressure in described Visbreaking reactor identical with the reaction pressure that industry soaker visbreaking reacts;
Step 3: under described reaction pressure, first by described Visbreaking reactor with the heating rate of 1��5 DEG C per minute to 350 DEG C, then described Visbreaking reactor was heated within 1��3 minute to reaction temperature initial value, described raw oil is made to carry out visbreaking reaction, described visbreaking course of reaction can produce light gas oil, described light gas oil is cooled down and collects;
Step 4: set the response time of described visbreaking reaction, and by described response time setting value, the reaction temperature of described Visbreaking reactor is down to reaction temperature end value, then the temperature of described Visbreaking reactor was reduced to 350 DEG C within 1��2 minute, and make described Visbreaking reactor continue cooling, when the temperature of described Visbreaking reactor drops to below 100 DEG C, oily for the visbreaking obtained and described light gas oil is mixed to get visbreaking generates oil in described Visbreaking reactor;
Step 5: contrast described visbreaking and generate the oily kinematic viscosity 50 DEG C or 100 DEG C of industrial visbreaking that oily and described industry soaker visbreaking is obtained by reacting, if described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil within setting scope, then the response time that described raw oil carries out visbreaking reaction at described Visbreaking reactor is the raw oil hot time of staying in industry soaker visbreaking reaction tower; If described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil not within setting scope, then adjusting described response time setting value repeat the above steps, the setting of described kinematic viscosity relative difference ranges for 0��2.0%.
2. soaker visbreaking heat time of staying estimating and measuring method according to claim 1, it is characterised in that in described step 2, described gas is at least one in noble gas, nitrogen, methane, ethane, propane, butane, carbon dioxide.
3. soaker visbreaking heat time of staying estimating and measuring method according to claim 1, it is characterised in that in described step 3, described reaction temperature initial value is more than or equal to 360 DEG C.
4. soaker visbreaking heat time of staying estimating and measuring method according to claim 3, it is characterised in that described reaction temperature initial value is identical with the temperature of described industry soaker visbreaking reaction tower entrance.
5. soaker visbreaking heat time of staying estimating and measuring method according to claim 1, it is characterised in that in described step 4, described reaction temperature end value is identical with the temperature of described industry soaker visbreaking reaction tower outlet.
6. soaker visbreaking heat time of staying estimating and measuring method according to claim 1, it is characterised in that in described step 4, described response time setting value is less than the cold time of staying of described industry soaker visbreaking reaction.
7. soaker visbreaking heat time of staying estimating and measuring method according to claim 1, it is characterized in that, in described step 5, it is the difference absolute value with the ratio of described industry visbreaking oil kinematic viscosity that described visbreaking generates oily and described industry visbreaking oil kinematic viscosity that described visbreaking generates the kinematic viscosity relative difference of oily and described industry visbreaking oil.
8. a soaker visbreaking reaction unit, it is characterized in that, described soaker visbreaking reaction unit includes: Visbreaking reactor, heating furnace, condenser, receptor and pressure controller, described Visbreaking reactor is arranged on above described heating furnace, described heating furnace is for heating to described Visbreaking reactor, described Visbreaking reactor, described condenser is internal with described receptor to be connected, described pressure controller is arranged on above described receptor, for controlling the pressure in described Visbreaking reactor, during work, light gas oil in described Visbreaking reactor enters described receptor through described condenser, when the pressure in described Visbreaking reactor exceedes reaction pressure, described pressure controller is opened, fixed gas in described receptor is discharged through described pressure controller, make the pressure in described Visbreaking reactor identical with described reaction pressure.
9. soaker visbreaking reaction unit according to claim 8, it is characterised in that described soaker visbreaking reaction unit also includes ftercompction mouth, and described ftercompction mouth is arranged on described Visbreaking reactor top.
10. soaker visbreaking reaction unit according to claim 9, it is characterized in that, described soaker visbreaking reaction unit also includes light gas oil outlet, the outlet of described light gas oil is arranged on described receptor bottom, and light gas oil is flowed out from described receptor by the outlet of described light gas oil.
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Citations (4)
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|---|---|---|---|---|
| CN85106304A (en) * | 1983-12-19 | 1987-02-18 | 环球油品公司 | Viscosity breaking method |
| US4929335A (en) * | 1988-07-22 | 1990-05-29 | Mobil Oil Corporation | Method for control of visbreaker severity |
| CN1382766A (en) * | 2001-04-28 | 2002-12-04 | 中国石油化工股份有限公司 | Process for viscosity breaking of deoiled asphalt |
| CN203635312U (en) * | 2013-11-28 | 2014-06-11 | 唐山森普工程设计有限公司 | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106304A (en) * | 1983-12-19 | 1987-02-18 | 环球油品公司 | Viscosity breaking method |
| US4929335A (en) * | 1988-07-22 | 1990-05-29 | Mobil Oil Corporation | Method for control of visbreaker severity |
| CN1382766A (en) * | 2001-04-28 | 2002-12-04 | 中国石油化工股份有限公司 | Process for viscosity breaking of deoiled asphalt |
| CN203635312U (en) * | 2013-11-28 | 2014-06-11 | 唐山森普工程设计有限公司 | Mineral tailings grading and separating recovery system for middings magnetic separator in dense medium coal preparation plant |
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