CN102514842A - Vinyl acetate storage device and emergency treatment method for refined vinyl acetate - Google Patents
Vinyl acetate storage device and emergency treatment method for refined vinyl acetate Download PDFInfo
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- CN102514842A CN102514842A CN2011104252205A CN201110425220A CN102514842A CN 102514842 A CN102514842 A CN 102514842A CN 2011104252205 A CN2011104252205 A CN 2011104252205A CN 201110425220 A CN201110425220 A CN 201110425220A CN 102514842 A CN102514842 A CN 102514842A
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Abstract
The invention provides a vinyl acetate storage device, which comprises a vinyl acetate storage tank, a vinyl acetate material feeding valve, a temperature detecting device, a cooler and a standby device, wherein the vinyl acetate material feeding valve and the temperature detecting device are arranged on the vinyl acetate storage tank, the vinyl acetate storage tank is connected with the standby device via the cooler, the feeding valve is of an automatic valve structure, the standby device is a standby storage tank, and the temperature detecting device is a thermometer. When the vinyl acetate storage device is used for storing refined vinyl acetate, reasonable emergency treatment temperature is set and effective emergency treatment measurements are put forward for the refined vinyl acetate stored in the vinyl acetate storage device during operation and stoppage of the vinyl acetate storage device, so that flash polymerization danger of the refined vinyl acetate stored in the vinyl acetate storage tank facing incontrollable polymerization is eliminated, and flash polymerization accidents are prevented.
Description
Technical field
The present invention relates to chemical industry safety method field, relate in particular to a kind of emergency processing method of smart vinyl acetate.
Background technology
Vinyl acetate is one of 50 kinds of chemical of output maximum in the world.The synthetic macromolecular compound that vinyl acetate polymerization or copolymerization obtain; Vinyl acetate can be produced a series of derivants such as polyvinyl acetate, polyvinyl alcohol, acetal resin because of it, has obtained application more and more widely in fields such as coating, syntheticfibres, leather processing, soil improvements.
VAM (VA) is a kind of chemical intermediate of easy polymerization reaction take place, also is one of constituent of many poly-mers and emulsion applications.Laboratory test data shows that the restricted class VAM of preserving under the normal circumstances (VA) can not form poly-mer, but empirical evidence, and polymerization initiator is easy in the system of being introduced into, thereby causes the polymerization reaction of VAM (VA).Just because of this material polymerization taking place easily, for preventing the generation of polymerization accident out of control, should take multiple safety precaution.Polymerization reaction out of control is meant that uncontrollable polymerization reaction takes place vinyl acetate (VA).Under controlled situation, VAM (VA) can polymerization form vinyl acetate polymer, but when free-radical contents is too high, polymerization reaction out of control will take place.Vinyl acetate polymerization reaction out of control is very violent, and the fluctuation of pressure of generation can reach 40 crust (580psig).And the vinyl acetate storage tank in most vinyl acetate memory storages can't bear these pressure environments; Vinylon plant thick vinyl acetate storage tank in Guangxi is exactly to blast because of this reason; Cause great production safety responsible accident, the near accident of peracetic acid ethene storage tank polymerization out of control also all takes place in other each big vinyl acetate manufacturer.
With respect to the thick vinyl acetate of vinyl acetate storage tank stores, the smart acetic acid of storing in most of vinyl acetate storage tank is not because the needs of follow-up polymerization process add polymerization inhibitor generally speaking, and it gathers danger cruelly will be far above thick vinyl acetate.Therefore, need to smart vinyl acetate generation polymerization sight out of control, exploitation actv. emergency processing method is eliminated and is gathered danger cruelly, prevents the generation of accident, satisfies the needs of actual conditions.
Summary of the invention
Technical matters to be solved by this invention is to be to provide a kind of vinyl acetate memory storage to reach when the material of its storage is smart vinyl acetate; Emergency processing method when smart vinyl acetate is faced the polymerization out-of-control condition; Thereby gather danger cruelly when eliminating smart vinyl acetate and facing polymerization sight out of control, prevent to gather cruelly the generation of accident.
In order to solve the problems of the technologies described above; The invention provides a kind of vinyl acetate memory storage; It comprises: the vinyl acetate storage tank, be arranged on vinyl acetate material inlet valve on the said vinyl acetate storage tank, be arranged on temperature-detecting device, cooling vessel, discharging pump, emergent bleeder valve, bleeder valve, material feeding pipe, discharging pipeline and emergency facility on the said vinyl acetate storage tank; Said material inlet valve is connected with said vinyl acetate storage tank through the material feeding pipe; Said discharging pump one end is connected through the discharging pipeline with said vinyl acetate storage tank; The other end is connected with said emergent bleeder valve through a branch of discharging pipeline, and another branch of discharging pipeline is connected with said bleeder valve, and said emergent bleeder valve is connected with an end of said cooling vessel through the discharging pipeline; The other end of said cooling vessel is connected with said emergency facility through the discharging pipeline; Said inlet valve is the automatic valve structure, and said emergency facility is the slack storage jar, and said temperature-detecting device is a heat indicator.
Wherein, said vinyl acetate memory storage also has the polymerization inhibitor feed pump, on said polymerization inhibitor feed pump, also is provided with the polymerization inhibitor inlet valve, and said polymerization inhibitor feed pump is connected through the polymerization inhibitor feeding pipe with said vinyl acetate storage tank.
For solving the problems of the technologies described above, the present invention also provides a kind of emergency processing method when the smart vinyl acetate in the vinyl acetate storage tank that is stored in above-mentioned vinyl acetate memory storage is faced the polymerization runaway condition, and it comprises:
The first step confirms that smart vinyl acetate arrives the needed time T MR of maximum response speed under adiabatic condition
Ad=24h;
Second goes on foot, and judges the existence of smart vinyl acetate, sets corresponding emergency handling temperature according to the different existence of smart vinyl acetate;
The 3rd step; Detect in real time the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches said emergency handling temperature, close vinyl acetate material inlet valve; Cut off charging; Open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor, and will be stored in the said vinyl acetate storage tank smart vinyl acetate material through discharging pump through the cooling vessel dump to emergency facility; Thereby the temperature of charge in the said vinyl acetate storage tank is controlled at the safety temperature scope below 25 ℃, prevents the generation that gathers accident cruelly of smart vinyl acetate material.
Wherein, The existence of judging smart vinyl acetate material in said second step is exactly to judge that the vinyl acetate storage tank that stores smart vinyl acetate is to be in dynamically; The running state of promptly driving still is in static state, promptly stops and material is derived the state in the vinyl acetate storage tank that still rests on.
Wherein, in said second step, be in when dynamic at said smart vinyl acetate material, its emergency handling temperature is according to the TMR under the different initial temperatures in the operational process
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h.
Wherein, In said second step; When smart vinyl acetate material was in static state, the minimum control temperature with the smart vinyl acetate in the vinyl acetate storage tank after its emergency handling temperature is stopped according to the vinyl acetate memory storage was an initial temperature, the TMR under each temperature spot of autoreaction temperature-rise period heating curve
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h.
Wherein, in said second step, be in when dynamic TMR at said smart vinyl acetate material
AdPairing emergency handling temperature is set at 57 ℃～58 ℃ during=24h.
Wherein, in said second step, when said smart vinyl acetate material is in static state, when the initial storing temperature of the smart vinyl acetate material of temperature-detecting device detection of stored in this storage tank on the process vinyl acetate storage tank is 20 ℃, TMR
AdPairing emergency handling temperature is set at 43 ℃～44 ℃ during=24h, when initial storing temperature is 25 ℃, and TMR
AdPairing emergency handling temperature is set at 45 ℃～47 ℃ during=24h.
For solving the problems of the technologies described above, the present invention also provides a kind of emergency processing method when the smart vinyl acetate in the vinyl acetate storage tank that is stored in above-mentioned vinyl acetate memory storage is faced the polymerization runaway condition, and it comprises:
The first step confirms that smart vinyl acetate arrives the needed time T MR of maximum response speed under adiabatic condition
Ad=24h;
In second step, judge the existence of smart vinyl acetate, when said smart vinyl acetate material is in when dynamic TMR
AdPairing emergency handling temperature is set at 57.5 ℃ during=24h; When said smart vinyl acetate material is in static state, when the initial storing temperature of the smart vinyl acetate material of temperature-detecting device detection of stored in this storage tank on the process vinyl acetate storage tank is 20 ℃, TMR
AdPairing emergency handling temperature is set at 43.5 ℃ during=24h, when initial storing temperature is 25 ℃, and TMR
AdPairing emergency handling temperature is set at 46 ℃ during=24h;
The 3rd step; When said smart vinyl acetate material is in when dynamic, detect the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches 57.5 ℃ of said emergency handling temperature; Close vinyl acetate material inlet valve; Cut off charging, open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor; And will be stored in the said vinyl acetate storage tank smart vinyl acetate material through discharging pump through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃;
When said smart vinyl acetate material is in static state; For initial temperature is 20 ℃ situation, detects the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches 43.5 ℃ of said emergency handling temperature; Close vinyl acetate material inlet valve; Cut off charging, open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor; And will be stored in the said vinyl acetate storage tank smart vinyl acetate material through discharging pump through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃;
It for initial temperature 25 ℃ situation; Detect the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device; When the temperature that obtains when temperature-detecting device reaches 46 ℃ of said emergency handling temperature, close vinyl acetate material inlet valve, cut off charging; Open said polymerization inhibitor inlet valve simultaneously; In said vinyl acetate storage tank, add polymerization inhibitor, and will be stored in the said vinyl acetate storage tank smart vinyl acetate material through discharging pump through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃.
Beneficial effect of the present invention:
The present invention is through providing a kind of vinyl acetate memory storage; And when in this vinyl acetate memory storage, storing smart vinyl acetate; Through the vinyl acetate memory storage the operation and docking process in; For being stored in wherein smart vinyl acetate rational emergency handling temperature is set, proposes actv. emergency handling measure, thereby gather danger cruelly when eliminating the smart vinyl acetate that is stored in the vinyl acetate storage tank and facing the polymerization out-of-control condition, prevent to gather cruelly the generation of accident.
Description of drawings
Fig. 1 is the structural representation of vinyl acetate memory storage.
Among Fig. 1,1-vinyl acetate storage tank; 2-material inlet valve; The 3-heat indicator; The 4-cooling vessel; The 5-discharging pump; The 6-bleeder valve of meeting an urgent need; The 7-bleeder valve; The 8-spray head; The 9-water supply line; 10-slack storage jar; 11-polymerization inhibitor feeding pipe.
The specific embodiment
The invention provides a kind of vinyl acetate memory storage; It comprises the vinyl acetate storage tank, be arranged on vinyl acetate material inlet valve on the said vinyl acetate storage tank, be arranged on temperature-detecting device, cooling vessel, discharging pump, emergent bleeder valve, bleeder valve, material feeding pipe, discharging pipeline and emergency facility on the said vinyl acetate storage tank; Said material inlet valve is connected with said vinyl acetate storage tank through the material feeding pipe; Said discharging pump one end is connected through the discharging pipeline with said vinyl acetate storage tank; The other end is connected with said emergent bleeder valve through a branch of discharging pipeline; Another branch of discharging pipeline is connected with said bleeder valve; Said emergent bleeder valve is connected with an end of said cooling vessel through the discharging pipeline, and the other end of said cooling vessel is connected with said emergency facility through the discharging pipeline.
Said vinyl acetate memory storage also has the polymerization inhibitor feed pump, on said polymerization inhibitor feed pump, also is provided with the polymerization inhibitor inlet valve, and said polymerization inhibitor feed pump is connected through the polymerization inhibitor feeding pipe with said vinyl acetate storage tank.
Said vinyl acetate memory storage also comprises spray water system, and said spray water system is used for the vinyl acetate storage tank outer wall shower water to said vinyl acetate memory storage, thereby reduces the temperature of said vinyl acetate storage tank outer wall.
Said spray water system can comprise spray head and water supply line.
Said temperature-detecting device can be temperature sensor or heat indicator.
Said inlet valve can be the automatic valve structure.
Said emergency facility can be the slack storage jar.
Emergency processing method when the present invention also provides the smart vinyl acetate in the vinyl acetate storage tank that is stored in above-mentioned vinyl acetate memory storage faced the polymerization runaway condition, it comprises:
The first step confirms that smart vinyl acetate arrives the needed time T MR of maximum response speed under adiabatic condition
Ad, said TMR
Ad=24h;
Second goes on foot, and judges the existence of smart vinyl acetate, sets corresponding emergency handling temperature according to the different existence of smart vinyl acetate;
The 3rd step; Detect the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device; When the temperature that obtains when temperature-detecting device reaches said emergency handling temperature, close vinyl acetate material inlet valve, cut off charging; Open said polymerization inhibitor inlet valve simultaneously; In said vinyl acetate storage tank, add polymerization inhibitor, like hydroquinones (HQ), Pyrogentisinic Acid (PBQ), and will be stored in the said vinyl acetate storage tank smart vinyl acetate material through discharging pump through the cooling vessel dump to emergency facility; Thereby the temperature of charge in the said vinyl acetate storage tank is controlled in the safety temperature scope, prevents the generation that gathers accident cruelly of smart vinyl acetate material.
The existence of the smart vinyl acetate material in the vinyl acetate storage tank can be divided into two kinds, and a kind of state is that dynamically promptly the vinyl acetate memory storage is in the driving running state; Another kind of state is static, and promptly the vinyl acetate memory storage is in and stops and material is derived the state in the vinyl acetate storage tank that still rests on.
We find that smart vinyl acetate autohemagglutination speed not only receives the influence of self temperature conditions, and to increase process relevant with forming free radical chain, and that free radical chain increases process is relevant with its induction time.Therefore, for smart vinyl acetate, two principal elements that influence its autohemagglutination are temperature and induction time, and induction time is meant that vinyl acetate different phase polymerization free radical forms induction time, is that material arrives the time that certain state experiences from initial condition.Because being in dynamic smart vinyl acetate material is in flow regime; Length of the halt is shorter; Induction time is also shorter, only needs the influence of account temperature to smart vinyl acetate autohemagglutination, is in static smart vinyl acetate material and then need takes all factors into consideration temperature and two factors of induction time.
In addition; For the identical smart vinyl acetate material of original composition, it is different reaching the induction time that same temperature experiences from collecting process by the initial storing temperature of difference, though its temperature is identical in this case; But the concentration of inducing free radical that forms is different; Thereby its to gather dangerous difference cruelly very big, and initial temperature is low more, the danger when reaching same temperature is also just big more.
The thermokinetic analysis of smart vinyl acetate under dynamic and quiescent conditions can be adopted and be shown below:
Wherein, α is a reaction-ure conversion-age, and t is the time, and A is a pre-exponential factor, and E is an energy of activation, f (α) mechanism of reaction function.Response parameter (energy of activation and pre-exponential factor etc.) is not a definite value, is in the state of continuous variation, if with the impossible correct simulation reaction process of fixing parameter, so best bet is to avoid asking for the mechanism of reaction function.Conversion ratio methods such as Friedman based on rate of reaction under identical conversion ratio as for relevant this groundwork of temperature, can avoid mechanism of reaction and energy of activation when asking for the reaction different phase, so the result that analogue computing obtains can conform to as far as possible with actual conditions.
Use the method for conversion ratios such as Friedman, the kinetics equation of following formula can be expressed as:
d?ln(dα/dt)α/dT＝-Eα/R
Can get through simple transformation:
Ln (α=Const-E α/the RT (Friedman method) of d α/dt)
This moment, E no longer was a constant, but the function of degree of conversion alpha.
Through adopting conversion ratio methods such as Friedman smart vinyl acetate is carried out thermokinetic analysis in dynamic and static state; Obtain thermokinetics data reaction heat, pre-exponential factor, energy of activation, further integration can obtain adopting and arrive maximum response speed required time TMR under the adiabatic condition
Ad, the height of dangerous probability of occurrence is exactly to adopt to arrive maximum response speed required time TMR under this adiabatic condition
AdCharacterize, promptly reaction system is reacted under adiabatic environment, plays the needed time in the maximum response speed moment that reaches constantly from certain.
In the said first step, the TMR that obtains according to conversion ratio methods such as Friedman
AdData, we find, work as TMR
AdThe danger very high (as shown in table 1) of gathering cruelly takes place in smart vinyl acetate in the＜24h vinyl acetate storage tank, the smart vinyl acetate that need take to store in the emergency handling measure control vinyl acetate storage tank gather danger cruelly, therefore, select the TMR in the said first step
Ad=24h.
The dangerous probability of occurrence criterion of table 1 vinyl acetate storage tank
| Probability | TMR adScope |
| High | TMR ad＜24h |
| In | 24h＜TMR ad＜64h |
| Low | TMR ad＞64h |
The existence of judging smart vinyl acetate material in said second step is exactly to judge that the vinyl acetate storage tank that stores smart vinyl acetate is from the driving running state or is in and stops and material is derived the state in the vinyl acetate storage tank that still rests on.
Said second step further comprises, is in when dynamic at said smart vinyl acetate material, and its emergency handling temperature promptly adopts and arrives maximum response speed required time TMR under the adiabatic condition according to gathering danger cruelly under the different initial temperatures in the operational process
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h, and the storage tank in its operational process of identification of being provided for that is in dynamic smart vinyl acetate storage tank emergency handling temperature faces the sight of polymerization when out of control; When smart vinyl acetate material is in static state; Minimum control temperature with the smart vinyl acetate in the vinyl acetate storage tank after its emergency handling temperature is stopped according to the vinyl acetate memory storage is an initial temperature; Respectively arrive through the autoreaction temperature-rise period and to gather danger cruelly under the temperature, promptly adopt and arrive maximum response speed required time TMR under the adiabatic condition
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h, be in static smart vinyl acetate storage tank emergency handling temperature be provided for face the sight of polymerization when out of control in the identification storage tank static store process.
In said second step, be in when dynamic TMR at said smart vinyl acetate material
AdPairing emergency handling temperature is set at 57 ℃～58 ℃ during=24h, further is preferably 57.5 ℃.
In said second step, when said smart vinyl acetate material is in static state, when initial storing temperature is 20 ℃, TMR
AdPairing emergency handling temperature is set at 43 ℃～44 ℃ during=24h, further is preferably 43.5 ℃, when initial storing temperature is 25 ℃, and TMR
AdPairing emergency handling temperature is set at 45 ℃～47 ℃ during=24h, further is preferably 46 ℃.
In said the 3rd step, smart vinyl acetate material static with dynamically under nominal situation the time safety temperature scope controlled be below 25 ℃.
The present invention is in the operation and docking process of vinyl acetate memory storage; The smart vinyl acetate of being stored faces under the polymerization out-of-control condition; According to thermokinetic analysis, rational emergency handling temperature is set, propose the actv. emergency handling and handle; Face and gather danger cruelly under the polymerization out-of-control condition to eliminate smart vinyl acetate material, prevent to gather cruelly the generation of accident.
Below adopt embodiment and accompanying drawing to specify embodiment of the present invention, how the application engineering means solve technical matters to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and enforcement according to this.
Embodiment 1:
Vinyl acetate memory storage of the present invention comprises vinyl acetate storage tank 1, be arranged on vinyl acetate material inlet valve 2 on the said vinyl acetate storage tank, be arranged on heat indicator 3 on the said vinyl acetate storage tank, cooling vessel 4, discharging pump 5, emergent bleeder valve 6, bleeder valve 7, material feeding pipe, discharging pipeline, spray water system and the slack storage jar 10 be made up of spray head 8 and water supply line 9; Said material inlet valve 2 is connected with said vinyl acetate storage tank 1 through the material feeding pipe; Said discharging pump 5 one ends are connected through the discharging pipeline with said vinyl acetate storage tank 1; The other end is connected with said emergent bleeder valve 6 through a branch of discharging pipeline; Another branch of discharging pipeline is connected with said bleeder valve 7; Said emergent bleeder valve 6 is connected with an end of said cooling vessel 4 through the discharging pipeline; The other end of said cooling vessel 4 is connected with said slack storage jar 10 through the discharging pipeline; Said vinyl acetate memory storage also has polymerization inhibitor feed pump (not shown); On said polymerization inhibitor feed pump, also be provided with polymerization inhibitor inlet valve (not shown), said polymerization inhibitor feed pump is connected through polymerization inhibitor feeding pipe 11 with said vinyl acetate storage tank.
Embodiment 2:
Smart vinyl acetate material is housed in the vinyl acetate storage tank in the vinyl acetate memory storage in embodiment 1; Confirm and under adiabatic condition, to arrive the needed time T MRad=24h of maximum response speed by the essence vinyl acetate; Judge the existence of smart vinyl acetate; Be under the dynamic situation at smart vinyl acetate, its emergency handling temperature is set at 57.5 ℃.Smart vinyl acetate material temperature in the vinyl acetate storage tank is measured through heat indicator 3 set on the smart vinyl acetate storage tank 1 in real time; When measuring the smart vinyl acetate material temperature that stores in the tank body when reaching 57.5 ℃ of emergency handling temperature; Close smart vinyl acetate material inlet valve 2; Cut off charging; Open the polymerization inhibitor inlet valve simultaneously, in vinyl acetate storage tank 1, add a large amount of hydroquinone of polymerization retarder, and with smart vinyl acetate material in the vinyl acetate storage tank 1 through discharging pump 5 through cooling vessel 4 dumps to slack storage jar 10; Final temperature is controlled at below 25 ℃, thereby prevents that smart vinyl acetate material from gathering the generation of accident cruelly.
Embodiment 3:
Smart vinyl acetate material is housed in the vinyl acetate storage tank 1 in the vinyl acetate memory storage in embodiment 1; Confirm and under adiabatic condition, to arrive the needed time T MRad=24h of maximum response speed by the essence vinyl acetate; Judge the existence of smart vinyl acetate; Be under the static situation at smart vinyl acetate; When the initial storing temperature of the smart vinyl acetate material of heat indicator 3 detection of stored in this storage tank on the process vinyl acetate storage tank 1 was 20 ℃, its emergency handling temperature was set at 43.5 ℃.Smart vinyl acetate material temperature in the vinyl acetate storage tank 1 is measured through heat indicator 3 set on the smart vinyl acetate storage tank in real time; When measuring the smart vinyl acetate material temperature that stores in the tank body when reaching 43.5 ℃ of emergency handling temperature; Close smart vinyl acetate material inlet valve 2; Cut off charging; Open the inlet valve of polymerization inhibitor simultaneously, in vinyl acetate storage tank 1, add a large amount of hydroquinone of polymerization retarder, and with smart vinyl acetate material in the vinyl acetate storage tank 1 through discharging pump 5 through cooling vessel 4 dumps to slack storage jar 10; Final temperature is controlled at below 25 ℃, thereby prevents that smart vinyl acetate material from gathering the generation of accident cruelly.
Smart vinyl acetate material is housed in the vinyl acetate storage tank 1 in the vinyl acetate memory storage in embodiment 1; Confirm and under adiabatic condition, to arrive the needed time T MRad=24h of maximum response speed by the essence vinyl acetate; Judge the existence of smart vinyl acetate; Be under the static situation at smart vinyl acetate, the initial storing temperature of the smart vinyl acetate material of heat indicator 3 detection of stored in this storage tank on the process vinyl acetate storage tank 1 is 25 ℃, and its emergency handling temperature is set at 46 ℃.Smart vinyl acetate material temperature in the vinyl acetate storage tank 1 is measured through heat indicator 3 set on the smart vinyl acetate storage tank 1 in real time; When measuring the smart vinyl acetate material temperature that stores in the tank body when reaching 46 ℃ of emergency handling temperature; Close smart vinyl acetate material inlet valve 2, cut off charging, open the polymerization inhibitor inlet valve simultaneously; In vinyl acetate storage tank 1, add a large amount of hydroquinone of polymerization retarder; And with smart vinyl acetate material in the vinyl acetate storage tank through discharging pump 5 through cooling vessel 4 dumps to slack storage jar 10, final temperature is controlled at below 25 ℃, thereby prevents that smart vinyl acetate material from gathering the generation of accident cruelly.
This intellectual property of primary enforcement that all are above-mentioned is not set restriction this new product of other forms of enforcement and/or new mode.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (9)
1. vinyl acetate memory storage; It is characterized in that; Comprise: the vinyl acetate storage tank, be arranged on vinyl acetate material inlet valve on the said vinyl acetate storage tank, be arranged on temperature-detecting device, cooling vessel, discharging pump, emergent bleeder valve, bleeder valve, material feeding pipe, discharging pipeline and emergency facility on the said vinyl acetate storage tank; Said material inlet valve is connected with said vinyl acetate storage tank through the material feeding pipe, and said discharging pump one end is connected through the discharging pipeline with said vinyl acetate storage tank, and the other end is connected with said emergent bleeder valve through a branch of discharging pipeline; Another branch of discharging pipeline is connected with said bleeder valve; Said emergent bleeder valve is connected with an end of said cooling vessel through the discharging pipeline, and the other end of said cooling vessel is connected with said emergency facility through the discharging pipeline, and said inlet valve is the automatic valve structure; Said emergency facility is the slack storage jar, and said temperature-detecting device is a heat indicator.
2. vinyl acetate memory storage as claimed in claim 1; It is characterized in that; Said vinyl acetate memory storage also has the polymerization inhibitor feed pump; On said polymerization inhibitor feed pump, also be provided with the polymerization inhibitor inlet valve, said polymerization inhibitor feed pump is connected through the polymerization inhibitor feeding pipe with said vinyl acetate storage tank.
3. the emergency processing method when the smart vinyl acetate in the vinyl acetate storage tank that is stored in claim 1 or 2 described vinyl acetate memory storages faced the polymerization runaway condition is characterized in that, comprising:
The first step confirms that smart vinyl acetate arrives the needed time T MR of maximum response speed under adiabatic condition
Ad=24h;
Second goes on foot, and judges the existence of smart vinyl acetate, sets corresponding emergency handling temperature according to the different existence of smart vinyl acetate;
The 3rd step; Detect in real time the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches said emergency handling temperature, close vinyl acetate material inlet valve; Cut off charging; Open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor, and will be stored in smart vinyl acetate material in the said vinyl acetate storage tank through the cooling vessel dump to emergency facility; Thereby the temperature of charge in the said vinyl acetate storage tank is controlled at the safety temperature scope below 25 ℃, prevents the generation that gathers accident cruelly of smart vinyl acetate material.
4. emergency processing method as claimed in claim 3; It is characterized in that: the existence of judging smart vinyl acetate material in said second step is exactly to judge that the vinyl acetate storage tank that stores smart vinyl acetate is to be in dynamically; The running state of promptly driving; Still be in static state, promptly stop and material is derived the state in the vinyl acetate storage tank that still rests on.
5. like the emergency processing method of claim 3 or 4, it is characterized in that: in said second step, be in when dynamic at said smart vinyl acetate material, its emergency handling temperature is according to the TMR under the different initial temperatures in the operational process
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h.
6. like the described emergency processing method of claim 3 to 5; It is characterized in that: in said second step; When smart vinyl acetate material is in static state; Minimum control temperature with the smart vinyl acetate in the vinyl acetate storage tank after its emergency handling temperature is stopped according to the vinyl acetate memory storage is an initial temperature, the TMR under each temperature spot of autoreaction temperature-rise period heating curve
AdConfirm TMR
AdPairing temperature is exactly the emergency handling temperature of said smart vinyl acetate material during=24h.
7. like the described emergency processing method of claim 3 to 6, it is characterized in that: in said second step, be in when dynamic TMR at said smart vinyl acetate material
AdPairing emergency handling temperature is set at 57 ℃～58 ℃ during=24h, further is preferably 57.5 ℃.
8. like the described emergency processing method of claim 3 to 7; It is characterized in that: in said second step; When said smart vinyl acetate material is in static state; When the initial storing temperature of the smart vinyl acetate material of temperature-detecting device detection of stored in this storage tank on the process vinyl acetate storage tank is 20 ℃, TMR
AdPairing emergency handling temperature is set at 43 ℃～44 ℃ during=24h, further is preferably 43.5 ℃, when initial storing temperature is 25 ℃, and TMR
AdPairing emergency handling temperature is set at 45 ℃～47 ℃ during=24h, further is preferably 46 ℃.
9. the emergency processing method when the smart vinyl acetate in the vinyl acetate storage tank that is stored in claim 1 or 2 described vinyl acetate memory storages faced the polymerization runaway condition is characterized in that, comprising:
The first step confirms that smart vinyl acetate arrives the needed time T MR of maximum response speed under adiabatic condition
Ad=24h;
In second step, judge the existence of smart vinyl acetate, when said smart vinyl acetate material is in when dynamic TMR
AdPairing emergency handling temperature is set at 57.5 ℃ during=24h; When said smart vinyl acetate material is in static state, when the initial storing temperature of the smart vinyl acetate material of temperature-detecting device detection of stored in this storage tank on the process vinyl acetate storage tank is 20 ℃, TMR
AdPairing emergency handling temperature is set at 43.5 ℃ during=24h, when initial storing temperature is 25 ℃, and TMR
AdPairing emergency handling temperature is set at 46 ℃ during=24h;
The 3rd step; When said smart vinyl acetate material is in when dynamic, detect the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches 57.5 ℃ of said emergency handling temperature; Close vinyl acetate material inlet valve; Cut off charging, open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor; And will be stored in smart vinyl acetate material in the said vinyl acetate storage tank through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃;
When said smart vinyl acetate material is in static state; For initial temperature is 20 ℃ situation, detects the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device, when the temperature that obtains when temperature-detecting device reaches 43.5 ℃ of said emergency handling temperature; Close vinyl acetate material inlet valve; Cut off charging, open said polymerization inhibitor inlet valve simultaneously, in said vinyl acetate storage tank, add polymerization inhibitor; And will be stored in smart vinyl acetate material in the said vinyl acetate storage tank through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃;
It for initial temperature 25 ℃ situation; Detect the temperature of the smart vinyl acetate of storing in the said vinyl acetate storage tank in real time through said temperature-detecting device; When the temperature that obtains when temperature-detecting device reaches 46 ℃ of said emergency handling temperature, close vinyl acetate material inlet valve, cut off charging; Open said polymerization inhibitor inlet valve simultaneously; In said vinyl acetate storage tank, add polymerization inhibitor, and will be stored in smart vinyl acetate material in the said vinyl acetate storage tank through the cooling vessel dump to emergency facility, thereby the temperature of charge in the said vinyl acetate storage tank is controlled at below 25 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106187764A (en) * | 2016-07-12 | 2016-12-07 | 中国石油化工股份有限公司 | Vinyl acetate and the sudden and violent poly-emergence treating method of acetic acid mixed liquor |
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| CN102514842B (en) | 2013-10-30 |
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