CN105233775A - Method for rapidly and uniformly adding diluent and inhibitor during stirring failure - Google Patents
Method for rapidly and uniformly adding diluent and inhibitor during stirring failure Download PDFInfo
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- CN105233775A CN105233775A CN201510579167.2A CN201510579167A CN105233775A CN 105233775 A CN105233775 A CN 105233775A CN 201510579167 A CN201510579167 A CN 201510579167A CN 105233775 A CN105233775 A CN 105233775A
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Abstract
The present invention discloses a method for rapidly and uniformly adding a diluent and an inhibitor during stirring failure. According to the present invention, the used apparatuses comprise a reaction tank, a storage tank 1, a storage tank 2 and a storage tank 3, an inhibitor is placed in the storage tank 1, a diluent is placed in the storage tank 2, a cooling solvent is placed in the storage tank 3, the storage tank 1, the storage tank 2 and the reaction tank are connected through a material feeding main pipeline, the middle portion section of the material feeding main pipeline is provided with a material feeding pump and an inlet valve, the tail portion section of the material feeding main pipeline is positioned below a stirring paddle, the tail portion section is coil-like, a plurality of material feeding holes are distributed on the disk surface, the reaction tank and the storage tank 3 are connected through a material discharge main pipeline, the front portion section of the material discharge main pipeline is provided with a safe valve, the middle portion section of the material discharge main pipeline section is provided with an outlet valve, the tail portion section of the material discharge main pipeline is positioned at the top portion of the reaction tank, the tail portion section is coil-like, and a plurality of material discharge holes are distributed on the disk surface; and according to the method, the diluent and the inhibitor are added to the reaction tank so as to rapidly prevent the occurrence of the runaway reaction.
Description
Technical field
The present invention relates to research to stir Quick uniform under failure condition and add the active prevention and control measure studying technological domain of diluent out of control and inhibitor, be specifically related to a kind of when stirring inefficacy Quick uniform add the method for diluent out of control and inhibitor.
Background technology
Most of process units of petrochemical industry is all with agitating device, and in the production process of petrochemical plant, stirring is mainly played dispersed material, strengthened the effect of mass transfer and heat transfer.Stir situation about losing efficacy extensively to be present in the production process of petrochemical industry, lost efficacy once stir, the phenomenon of the system that will induce reaction local monomer overrich or hot-spot, thus cause reaction system to depart from normal reaction conditions, if do not taken effective measures, serious consequence will be caused.
According to literature search result, domestic and international most of manufacturing enterprise, under failure conditions appears in agitating device, if reaction system does not depart from normal reaction conditions, then stops production process, is unloaded by material to safety zone, resumes production after device to be mixed is normal; If reaction system departs from normal reaction conditions; then take certain cooling, step-down measure prevents runaway reaction; if can not runaway reaction be stoped by cooling, step-down measure; then by adding retarder thinner or inhibitor out of control prevention runaway reaction; if the generation of runaway reaction can't be stoped; then by passive protection measure safety relief system protection process units, loss of material can only be caused, increases financial cost to enterprise.In the process, if can not runaway reaction be stoped by cooling, step-down measure, by adding retarder thinner or inhibitor out of control, to stop runaway reaction to be most economical for manufacturing enterprise be also safest control measure, and material also can reuse after separating treatment.But diluent and inhibitor add in reaction system by the material pipeline on device reaction still top by current most of manufacturing enterprise, because agitating device lost efficacy, diluent and inhibitor can not be disperseed uniformly, especially the production processes of polyalcohol that number molecular weight is larger, reaction system viscosity is larger, diluent and inhibitor just can not be dispersed in reaction system quickly and evenly, are difficult to play the effect stoping runaway reaction.Therefore, how being added in reaction system by diluent and inhibitor quickly and evenly under stirring failure conditions, reduce the risk that runaway reaction occurs, the dangerous explained hereafter enterprise for field of petrochemical industry has very important significance.
Summary of the invention
The object of the present invention is to provide a kind of when stirring inefficacy Quick uniform add the method for diluent and inhibitor, the method, by being added in retort by diluent and inhibitor, can stop the generation of runaway reaction fast.
Its technical solution comprises:
When stirring inefficacy, Quick uniform adds a method for diluent and inhibitor, comprises the following steps:
A, installation reaction unit, described reaction unit comprises retort, storage tank one, storage tank two and storage tank three, the top of described retort is provided with motor, shaft is connected with below described motor, described shaft stretches into below material in reactor liquid level, is connected with stirring arm at described stirring the tip of the axis;
Inhibitor is placed in described storage tank one, diluent is placed in described storage tank two, cooling solvent is placed in described storage tank three, described storage tank one, storage tank two are connected by charging main pipeline with between retort, the middle part of described charging main pipeline is provided with feed pump and inlet valve, the end segment of described charging main pipeline is positioned at the below of paddle, and described end segment is coil-like, forms in coil-like card and is distributed with several charging holes;
Be connected by discharging main pipeline between described retort with storage tank three, the front waist section of described discharging main pipeline is provided with safety-valve, the middle part of described discharging main leg is provided with outlet valve, the end segment of described discharging main pipeline is positioned at the top of retort, described end segment is coil-like, forms in coil-like card and is distributed with several discharge openings;
B, unlatching driven by motor shaft rotate and react, and when motor shaft stirs inefficacy, open feed pump and lead to diluent in retort, diluent enters in retort from the aperture of the front waist section of charging main pipeline, middle part and end segment successively;
C, diluent fully dilute the material in retort, if when the pressure now in retort rises to safety valve starting pressure, safety valve starts, open outlet valve simultaneously, material in reactor enters in storage tank three with discharging main pipeline, when in storage tank three, pressure is identical with pressure in retort, cooling solvent in storage tank three by Action of Gravity Field after the discharge opening of the front waist section of discharging main pipeline, middle part and end segment, enter in retort, reach the effect of material concentration out of control and reduction temperature in diluting reaction still;
If d cannot reach the cooling temperature of expection by diluent, then in retort, pass into inhibitor by feed pump, switch inhibitor and enter in reaction system, stop runaway reaction to occur.
As a preferred version of the present invention, the bottom of described storage tank one is provided with the port of export one, the described port of export one is connected with charging main pipeline by pipeline one, the bottom of described storage tank two is provided with the port of export two, described port of export two-way piping two is connected with charging main pipeline, and described pipeline one and pipeline two are provided with valve.
As another preferred version of the present invention, the outer wall of described retort is coated with chuck, described chuck is provided with the water inlet pipe supplying water and flow through, for lowering the temperature to retort.
The Advantageous Effects that the present invention brings:
The device that the inventive method adopts, storage tank one and storage tank two are connected side by side and are connected by charging main pipeline and retort, retort is connected by discharging main pipeline and storage tank three, in storage tank one and storage tank two, inhibitor and diluent are housed respectively, be low-temperature solvent in storage tank three, when the agitator in retort break down do not work time, the pump on charging main pipeline can be opened, diluent is sent in retort, the end segment of charging main pipeline is set to coil-like, coil-like card is distributed with several charging holes, diluent is discharged from each charging hole, namely diluent evenly adds in retort, even if when there is no agitating device, material also can evenly be sent in retort by apparatus of the present invention,
Diluent enters after in retort, play the effect of diluting reaction system, when the safety invention that the pressure in retort rises to storage tank three starts, simultaneously open inlet valve, in retort, material enters in storage tank three with discharging main pipeline, when storage tank three is identical with pressure in retort, low temperature feedstock solvent in storage tank three enters in retort by Action of Gravity Field by the discharging main pipeline at reactor top, end segment due to discharging main pipeline is coil-like, and in coil-like card, be distributed with several discharge openings, can realize evenly adding, reach the effect of material concentration out of control and reduction temperature in diluting reaction tank.
The present invention adds the test of diluent and inhibitor prevention runaway reaction under successively having carried out peroxide decomposition and vinyl acetate polymerisation in bulk runaway reaction stirring runaway condition, all effectively can stop the generation of runaway reaction, service condition is stablized.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, clearly and detailedly explanation is done to the present invention:
Fig. 1 is the structural representation of device of the present invention;
Fig. 2 is the structural representation of charging main pipeline end segment of the present invention;
Fig. 3 is the structural representation of discharging main pipeline end segment of the present invention;
In figure, 1, storage tank one, 2, valve, 3, storage tank two, 4, valve, 5, feed pump, 6, inlet valve, 7, chuck, 8, water inlet, 9, delivery port, 10, charging main pipeline, 11, paddle, 12, safety-valve, 13, discharging main pipeline end segment is coil-like, 14, charging main pipeline end segment is coil-like, 15, storage tank three, 16, discharging main pipeline, 17, outlet valve, 18, delivery port, 19, charging hole, 20, discharge opening.
Detailed description of the invention
The invention discloses a kind of when stirring inefficacy Quick uniform add the method for diluent and inhibitor, in order to make advantage of the present invention, technical scheme clearly, clearly, below in conjunction with specific embodiment, the present invention is elaborated.
First the device selected by the present invention is elaborated, the present invention, a kind of when stirring inefficacy Quick uniform add the device of diluent and inhibitor, as shown in Figure 1, comprise the storage tank 1 for placing inhibitor, for placing the storage tank 23 of diluent, retort and the storage tank 3 15 for placing low temperature feedstock solvent, wherein, the port of export one and the port of export two is respectively arranged with bottom storage tank 1 and storage tank 23, pipeline one and pipeline two is connected with at the port of export one and the port of export two place, pipeline one and pipeline two arrange valve 2 and valve 4 respectively, for controlling the flow of diluent in the flow of inhibitor in storage tank one and storage tank two.
Above-mentioned pipeline one is all connected with charging main pipeline 10 with the other end of pipeline two, charging main pipeline 10 is for sending in retort by diluent and/or inhibitor, charging main pipeline enters from the top of retort, stretch to the bottom of retort, this charging main pipeline 10 is provided with feed pump 5 and inlet valve 6, as shown in Figure 2, pipeline in the bottom of retort is coil-like, i.e. charging main pipeline end segment coil-like 14, this is coil-like comprises card, coil-like card is distributed with several charging holes 19, diluent is discharged from each charging hole, namely diluent evenly adds in retort, even if when there is no agitating device, material also can evenly be sent in retort by apparatus of the present invention.
This retort is equipped with agitating device, it is same as the prior art, be made up of motor, shaft and paddle 11, when agitating device is normal, without the need to diluent logical in retort and inhibitor, apparatus of the present invention be for agitating device run break down when just unlatching storage tank one and storage tank two carry inhibitor or diluent.
Discharging main pipeline is connected between retort and storage tank 3 15, the leading portion portion of this discharging main pipeline is connected with the outlet at retort top, leading portion portion is provided with safety-valve, when the pressure in retort rises to safety-valve 12 starting pressure, safety-valve starts, the outlet valve 17 be positioned on discharging main pipeline also starts, partial material after starting in retort enters in storage tank 3 15, when the pressure in the pressure in retort and storage tank three is consistent, low temperature feedstock solvent in storage tank three enters in retort by Action of Gravity Field, it is through discharging main pipeline 16 and enters in retort, as shown in Figure 3, the end segment of discharging main pipeline 16 is coil-like, namely its card of discharging main pipeline end segment coil-like 13 there are several discharge openings 20, low temperature feedstock solvent is discharged from discharge opening 20 and is entered in retort, reach the effect of material concentration out of control and reduction temperature in diluting reaction tank.
Conveniently to reactant system fast cooling, the peripheral wall of retort is coated with chuck 7, water inlet 8 is arranged at the bottom of chuck 7 side, delivery port 9 is arranged at the top of opposite side, current enter from water inlet 8, discharge from delivery port 9, assist retort 31 to play the effect of cooling.
The present invention, stirs Quick uniform when losing efficacy and adds the method for diluent and inhibitor, comprise the following steps:
Step 1, when the agitating device with retort cooperating breaks down, now need to lower the temperature to the reaction system in retort, first, open the valve on storage tank two port of export pipeline two, open feed pump, the front portion of diluent in storage tank two successively from charging main pipeline under the effect of feed pump, middle part, afterbody enter in retort, afterbody is coil-like, and in the charging hole in coil-like card, diluent is sprayed, because charging hole is for being uniformly distributed, therefore, diluent is for evenly to add;
Step 2, when the pressure in retort rises to safety-valve 12 starting pressure, safety-valve starts, partial material after starting in retort enters in storage tank three, when the pressure in the pressure in retort and storage tank three is consistent, low temperature feedstock solvent in storage tank three enters in retort by Action of Gravity Field, it is through discharging main pipeline and enters in retort, the end segment of discharging main pipeline is coil-like, low temperature feedstock solvent is discharged from discharge opening and is entered in retort, reaches the effect of material concentration out of control and reduction temperature in diluting reaction tank;
If step 3 cannot reach the cooling temperature of expection by diluent, then open valve on storage tank one outlet conduit one, in retort, add inhibitor, the feed postition of inhibitor is the same, switches inhibitor and enters in reaction system, stops runaway reaction to occur.
It should be noted that, those skilled in the art are under enlightenment of the present invention, and to charging main pipeline, simple replacement that the coil-like structure of discharging main pipeline end segment is made all should within protection scope of the present invention.
Claims (3)
1. when stirring inefficacy, Quick uniform adds a method for diluent and inhibitor, it is characterized in that: comprise the following steps:
A, installation reaction unit, described reaction unit comprises retort, storage tank one, storage tank two and storage tank three, the top of described retort is provided with motor, shaft is connected with below described motor, described shaft stretches into below material in reactor liquid level, is connected with stirring arm at described stirring the tip of the axis;
Inhibitor is placed in described storage tank one, diluent is placed in described storage tank two, cooling solvent is placed in described storage tank three, described storage tank one, storage tank two are connected by charging main pipeline with between retort, the middle part of described charging main pipeline is provided with feed pump and inlet valve, the end segment of described charging main pipeline is positioned at the below of paddle, and described end segment is coil-like, forms in coil-like card and is distributed with several charging holes;
Be connected by discharging main pipeline between described retort with storage tank three, the front waist section of described discharging main pipeline is provided with safety-valve, the middle part of described discharging main leg is provided with outlet valve, the end segment of described discharging main pipeline is positioned at the top of retort, described end segment is coil-like, forms in coil-like card and is distributed with several discharge openings;
B, unlatching driven by motor shaft rotate and react, and when motor shaft stirs inefficacy, open feed pump and lead to diluent in retort, diluent enters in retort from the aperture of the front waist section of charging main pipeline, middle part and end segment successively;
C, diluent fully dilute the material in retort, if when the pressure now in retort rises to safety valve starting pressure, safety valve starts, open outlet valve simultaneously, material in reactor enters in storage tank three with discharging main pipeline, when in storage tank three, pressure is identical with pressure in retort, cooling solvent in storage tank three by Action of Gravity Field after the discharge opening of the front waist section of discharging main pipeline, middle part and end segment, enter in retort, reach the effect of material concentration out of control and reduction temperature in diluting reaction still;
If d cannot reach the cooling temperature of expection by diluent, then in retort, pass into inhibitor by feed pump, switch inhibitor and enter in reaction system, stop runaway reaction to occur.
2. when stirring according to claim 1 is lost efficacy, Quick uniform added the method for diluent and inhibitor, it is characterized in that: the bottom of described storage tank one is provided with the port of export one, the described port of export one is connected with charging main pipeline by pipeline one, the bottom of described storage tank two is provided with the port of export two, described port of export two-way piping two is connected with charging main pipeline, and described pipeline one and pipeline two are provided with valve.
3. when stirring according to claim 1 is lost efficacy, Quick uniform added the method for diluent and inhibitor, it is characterized in that: the outer wall of described retort is coated with chuck, described chuck was provided with the water inlet pipe supplying water and flow through, for lowering the temperature to retort.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579167.2A CN105233775B (en) | 2015-09-11 | 2015-09-11 | It is a kind of to stir the method that Quick uniform adds diluent and inhibitor when failing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579167.2A CN105233775B (en) | 2015-09-11 | 2015-09-11 | It is a kind of to stir the method that Quick uniform adds diluent and inhibitor when failing |
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| CN105233775A true CN105233775A (en) | 2016-01-13 |
| CN105233775B CN105233775B (en) | 2017-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110075774A (en) * | 2019-06-14 | 2019-08-02 | 长岭炼化岳阳工程设计有限公司 | Change products the MTBE device and its automatic control method of heat bodied oil with safety auto-controlled system |
| CN110449095A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The emergency termination agent method for implanting of turbine impeller reactor |
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| CN1417092A (en) * | 2001-11-05 | 2003-05-14 | 中国石油化工股份有限公司 | Fulmination preventer for feeding bin |
| US8759551B2 (en) * | 2008-03-14 | 2014-06-24 | Dic Corporation | Process for producing epoxy (metha)acrylate |
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Cited By (2)
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| CN110449095A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The emergency termination agent method for implanting of turbine impeller reactor |
| CN110075774A (en) * | 2019-06-14 | 2019-08-02 | 长岭炼化岳阳工程设计有限公司 | Change products the MTBE device and its automatic control method of heat bodied oil with safety auto-controlled system |
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| CN105233775B (en) | 2017-07-28 |
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Effective date of registration: 20170628 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Applicant after: Sinopec Corp. Address before: 100728 Chaoyangmen street, Beijing, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. |
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