CN102702396B - Emergency treatment method and device for failure of PVC (polyvinyl chloride) polymerization reactor - Google Patents
Emergency treatment method and device for failure of PVC (polyvinyl chloride) polymerization reactor Download PDFInfo
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- CN102702396B CN102702396B CN201210188066.9A CN201210188066A CN102702396B CN 102702396 B CN102702396 B CN 102702396B CN 201210188066 A CN201210188066 A CN 201210188066A CN 102702396 B CN102702396 B CN 102702396B
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Abstract
The invention discloses an emergency treatment method for failure of a PVC (polyvinyl chloride) polymerization reactor, and simultaneously discloses an emergency treatment device for failure of the PVC polymerization reactor. In the treatment method, NO gas is used as an emergency reaction terminator and is filled into the PVC reactor, and the polymerization reaction in the PVC polymerization reactor can be terminated due to reaction between the NO gas in the PVC polymerization reactor and reaction materials in the PVC polymerization reactor. When the emergency treatment method for failure of the PVC polymerization reactor is adopted, the safety of PVC production can be ensured, major accidents can be avoided, and important economic and social significance can be realized.
Description
Technical field
The present invention relates to PVC production technical field, be specifically related to emergent management method and device after a kind of PVC polymeric kettle fault.
Background technology
The production process of PVC is thermopositive reaction, the error have a power failure, cooling water inflow being not enough, material adds fashionable metering etc. all can cause that PVC poly-unit is the sharply over-temp and over-pressure of PVC polymeric kettle, as deal with improperly, vinylchlorid will leak in a large number, because vinylchlorid is inflammable, explosive, toxic substance, therefore very easily cause Serious Accident.In PVC production process, should strictly control polymerization velocity, control temperature, pressure in PVC polymeric kettle, avoid the generation of the serious accident that runaway reaction causes, under any circumstance all should control polyreaction in safety and steady state, prevent that vinylchlorid from leaking, this is the unique method that guarantees PVC production safety.Therefore, guarantee the security that PVC produces, the Tough questions of avoiding the generation ShiPVC enterprise of Serious Accident to face.
Summary of the invention
The object of this invention is to provide a kind of PVC polymeric kettle fault emergent management method.
The present invention also aims to provide a kind of PVC polymeric kettle fault emergency treatment plant.
In order to realize above object, the present invention adopts following technical scheme: a kind of PVC polymeric kettle fault emergent management method, this treatment process adopts NO gas as the urgent terminator of reaction, NO gas is passed in PVC polymeric kettle, the NO gas passing in PVC polymeric kettle reacts with the reaction mass in described PVC polymeric kettle, makes the polyreaction in described PVC polymeric kettle stop carrying out.
A kind of PVC polymeric kettle fault emergency treatment plant, comprise the polymeric kettle stir shaft water shutoff pipeline being arranged at the bottom of PVC polymeric kettle still, on described polymeric kettle stir shaft water shutoff pipeline, offer respectively NO gas inlet, nitrogen inlet and drain, described NO gas inlet is communicated with NO gas delivery manifold, described nitrogen inlet is communicated with nitrogen gas delivery-line, described drain is communicated with exhausting pipeline, described NO gas delivery manifold, nitrogen gas delivery-line, on exhausting pipeline, all string is provided with ball valve, described NO gas delivery manifold is communicated with at least two NO gas bombs, described nitrogen gas delivery-line is communicated with nitrogen cylinder.
PVC polymeric kettle fault emergent management method provided by the invention, when PVC polymeric kettle generation stirring rake comes off, have a power failure, cooling water inflow is not enough, material adds fashionable error in dipping, Mixing Machine fault can not run well, agitator motor burns, the accident such as stir supply line's short circuit and open circuit, while causing the interior runaway reaction of PVC polymeric kettle, can pass into immediately the urgent terminator NO gas of reaction, NO gas and combined with radical can stop proceeding that in PVC polymeric kettle, chloroethylene polymerization reacts, NO gas also can with chloroethylene polymerization reaction initiator generation redox reaction, make initiator lose initiation, effectively stop proceeding of chloroethylene polymerization reaction, chloroethylene polymerization reaction in PVC polymeric kettle is stopped fast, make the temperature in polymeric kettle, pressure is in normal range, make to produce and can carry out safely.PVC polymeric kettle fault emergent management method provided by the invention has guaranteed the security that PVC produces, and has avoided the generation of Serious Accident, has important economic implications and social effect.
PVC polymeric kettle fault emergency treatment plant provided by the invention is simple in structure, is through simple transformation, to obtain on the basis of former PVC polymeric kettle, and cost is low, and economic input is few, and easy to use, safe and reliable, is applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing PVC polymeric kettle;
Fig. 2 is the one-piece construction schematic diagram that adds PVC polymeric kettle after a kind of PVC polymeric kettle fault emergency treatment plant provided by the invention.
Embodiment
As shown in Figure 1, structural representation for existing a kind of PVC polymeric kettle, the bottom of PVC polymerization reaction kettle 1 is provided with stirrer 2, on stirrer 2, be provided with polymeric kettle stir shaft water shutoff pipeline 3, polymeric kettle stir shaft water shutoff pipeline 3 is by stirrer 2 and PVC polymerization reaction kettle 1 internal communication, and on polymeric kettle stir shaft water shutoff pipeline 3, string is provided with the first ball valve 4 and the second ball valve 12.
As shown in Figure 2, for adding the one-piece construction schematic diagram of PVC polymeric kettle after a kind of PVC polymeric kettle fault emergency treatment plant provided by the invention, this PVC polymeric kettle fault emergency treatment plant wherein, comprise the polymeric kettle stir shaft water shutoff pipeline 3 being arranged at the bottom of PVC polymerization reaction kettle 1 still, on polymeric kettle stir shaft water shutoff pipeline 3, offer respectively NO gas inlet 9, nitrogen inlet 8 and drain 7, NO gas inlet 9 is communicated with NO gas delivery manifold 11, nitrogen inlet 8 is communicated with nitrogen gas delivery-line 15, drain 7 is communicated with exhausting pipeline 10, on NO gas delivery manifold 11, string is provided with ball valve 19, in nitrogen gas delivery-line 15, string is provided with ball valve 18, on exhausting pipeline 10, string is provided with ball valve 17, NO gas delivery manifold 11 is communicated with five NO gas bombs 5, nitrogen gas delivery-line 15 is communicated with nitrogen cylinder 6.
When PVC polymeric kettle normally moves, the first ball valve 4 and the second ball valve 12 that on polymeric kettle stir shaft water shutoff pipeline 3, string is established are all opened, and polymeric kettle stir shaft water shutoff pipeline 3 is path, and now ball valve 17, ball valve 18, ball valve 19 are all in closing condition.When PVC polymeric kettle generation stirring rake comes off, power failure, cooling water inflow is not enough, material adds fashionable error in dipping, Mixing Machine fault can not run well, agitator motor burns, stir supply line's short circuit and the accident such as open circuit, while causing PVC polymerization reaction kettle 1 interior runaway reaction, close the first ball valve 4, open ball valve 19, then open the angle valve of one of them NO gas bomb 5, according to the still bottom pressure table of PVC polymerization reaction kettle 1, with steel cylinder pressure regulator valve, pressure is transferred to higher than PVC polymerization reaction kettle 1 still and is pressed 2kgf/cm
2, in PVC polymerization reaction kettle 1, squeeze into NO gas, NO gas and combined with radical can stop proceeding that in PVC polymeric kettle, chloroethylene polymerization reacts, NO gas also can with chloroethylene polymerization reaction initiator generation redox reaction, make initiator lose initiation, effectively stop proceeding of chloroethylene polymerization reaction, chloroethylene polymerization reaction in PVC polymerization reaction kettle 1 is stopped fast, make the temperature in PVC polymerization reaction kettle 1, pressure no longer increases or occurs declining, after one bottle of NO gas has been beaten, close angle valve and the pressure regulator valve of this NO gas bomb, if the still of PVC polymerization reaction kettle 1 is pressed, temperature continues to go up, can open again angle valve and the pressure regulator valve of a NO gas bomb, pressure is transferred to higher than PVC polymerization reaction kettle 1 still and is pressed 2kgf/cm
2, to PVC polymerization reaction kettle 1 is interior, continue to squeeze into NO gas, until the temperature in PVC polymerization reaction kettle 1, pressure no longer increases or occur declining, and now illustrates that the polyreaction in PVC polymerization reaction kettle 1 is terminated.Then close ball valve 12, ball valve 19, open ball valve 17 and ball valve 18, open again afterwards angle valve and the pressure regulator valve of nitrogen cylinder 6, pressure is transferred to 1～2kgf/cm
2, system is purged to 5 minutes, then close angle valve and the pressure regulator valve of nitrogen cylinder 6, close again afterwards ball valve 17 and ball valve 18.During system roll-back, open the first ball valve 4 and the second ball valve 12.
PVC polymeric kettle fault emergency treatment plant and method that the embodiment of the present invention provides can make PVC production safety carry out, and have guaranteed the security that PVC produces, and have avoided the generation of Serious Accident, have important economic implications and social effect.
Claims (2)
1. a PVC polymeric kettle fault emergent management method, it is characterized in that, adopt NO gas as the urgent terminator of reaction, NO gas is passed in PVC polymeric kettle, the NO gas passing in PVC polymeric kettle reacts with the reaction mass in described PVC polymeric kettle, makes the polyreaction in described PVC polymeric kettle stop carrying out; Wherein, the operation that NO gas is passed into PVC polymeric kettle specifically comprises the steps:
Step 1: close realize the first ball valve that on the polymeric kettle stir shaft water shutoff pipeline of internal communication, string is established by stirrer and PVC polymerization reaction kettle;
Step 2: the NO gas inlet between the first ball valve and described stirrer on described polymeric kettle stir shaft water shutoff pipeline is opened;
Step 3: described NO gas bomb is opened and by described NO gas inlet, NO gas is delivered in described PVC polymerization reaction kettle, and NO gas bomb pressure is adjusted to higher than the still of described PVC polymerization reaction kettle and presses 2kgf/cm
2;
Step 4: when the temperature in described PVC polymerization reaction kettle, pressure no longer increase or occurs declining, the second ball valve between described NO gas inlet and described PVC polymerization reaction kettle is closed and described NO gas inlet is closed, and the nitrogen inlet between described NO gas inlet and described the second ball valve is opened;
Step 5: by described nitrogen cylinder and be arranged on described nitrogen inlet and described the second ball valve between the drain of exhausting pipeline open, and nitrogen cylinder pressure is adjusted to 1～2kgf/cm
2; Nitrogen in described nitrogen cylinder is undertaken described polymeric kettle stir shaft water shutoff pipeline after purge operations by described nitrogen inlet, then blow out through described drain;
Step 6: when described purge operations carries out, after 5 minutes, described nitrogen cylinder being closed, and then described nitrogen inlet is closed, finally described drain is closed.
2. a PVC polymeric kettle fault emergency treatment plant, comprise the polymeric kettle stir shaft water shutoff pipeline being arranged at the bottom of PVC polymeric kettle still, it is characterized in that, on described polymeric kettle stir shaft water shutoff pipeline, offer respectively NO gas inlet, nitrogen inlet and drain, described NO gas inlet is communicated with NO gas delivery manifold, described nitrogen inlet is communicated with nitrogen gas delivery-line, described drain is communicated with exhausting pipeline, described NO gas delivery manifold, nitrogen gas delivery-line, on exhausting pipeline, all string is provided with ball valve, described NO gas delivery manifold is communicated with at least two NO gas bombs, described nitrogen gas delivery-line is communicated with nitrogen cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210188066.9A CN102702396B (en) | 2012-06-08 | 2012-06-08 | Emergency treatment method and device for failure of PVC (polyvinyl chloride) polymerization reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210188066.9A CN102702396B (en) | 2012-06-08 | 2012-06-08 | Emergency treatment method and device for failure of PVC (polyvinyl chloride) polymerization reactor |
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| CN102702396A CN102702396A (en) | 2012-10-03 |
| CN102702396B true CN102702396B (en) | 2014-08-13 |
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| CN103413028A (en) * | 2013-07-23 | 2013-11-27 | 沈阳化工大学 | Intelligent fault diagnosis method for polymerizing pot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400980A (en) * | 2000-02-16 | 2003-03-05 | 巴塞尔聚烯烃有限公司 | Ethylene high pressure polymerization while preventing undesired polymer deposits |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1400980A (en) * | 2000-02-16 | 2003-03-05 | 巴塞尔聚烯烃有限公司 | Ethylene high pressure polymerization while preventing undesired polymer deposits |
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Effective date of registration: 20190925 Address after: 810100 Xintian village, Changning Town, Datong Hui and Tu Autonomous County, Xining, Qinghai Patentee after: Qinghai Yihua Chemical Co., Ltd. Address before: 016040 Wuda Industrial Park, the Inner Mongolia Autonomous Region, Wuhai Patentee before: Inner Mongolia Yihua Chemical Co., ltd. |
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