CN111468051A - Polymerization reaction system - Google Patents
Polymerization reaction system Download PDFInfo
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- CN111468051A CN111468051A CN202010255793.7A CN202010255793A CN111468051A CN 111468051 A CN111468051 A CN 111468051A CN 202010255793 A CN202010255793 A CN 202010255793A CN 111468051 A CN111468051 A CN 111468051A
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- Prior art keywords
- terminator
- pressure
- polymerization reaction
- reaction system
- emergency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00162—Controlling or regulating processes controlling the pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00245—Avoiding undesirable reactions or side-effects
- B01J2219/00272—Addition of reaction inhibitor
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to the technical field of polymerization reaction, in particular to a polymerization reaction system which comprises a polymerization kettle, an emergency terminator gas cylinder and a monitoring control device, wherein the polymerization kettle is communicated with the emergency terminator gas cylinder through a main pipeline, the monitoring control device comprises a pressure transmitter, an ESD device and a DCS device, the pressure transmitter is communicated with the main pipeline, the pressure transmitter is connected with the ESD device, and the ESD device is connected with the DCS device. An operator can monitor whether the pressure value of the terminator output from the emergency terminator gas cylinder meets the pressure value requirement of entering the polymerization kettle in real time, visually check the current pressure condition and the historical trend of the emergency terminator, accurately judge the running condition of the emergency terminator, find a leakage point in time for checking and process abnormal conditions; can carry out accurate evidence of getting to this pressure value after the accident takes place.
Description
Technical Field
The invention relates to the technical field of polymerization reaction, in particular to a polymerization reaction system.
Background
At present, monitoring of the emergency terminator is particularly important in the production working process of a polymerizer, in the prior art, a general monitoring method is to monitor by adopting a pressure switch, an online real-time pressure value of the emergency terminator cannot be directly read, an alarm cannot be provided for an operator when a real-time pressure value cannot reach a conveying standard, the trend of pressure change of the emergency terminator in the conveying process is not monitored, and the pressure value cannot be proved after an accident occurs.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem that the pressure value of an emergency terminator input into an existing polymerization kettle cannot be monitored in real time in the production process of the existing polymerization kettle.
(II) technical scheme
In order to solve the technical problem, the invention provides a polymerization reaction system which comprises a polymerization kettle, an emergency terminator gas cylinder and a monitoring control device, wherein the polymerization kettle is communicated with the emergency terminator gas cylinder through a main pipeline, the monitoring control device comprises a pressure transmitter, an ESD device and a DCS device, the pressure transmitter is communicated with the main pipeline, the pressure transmitter is connected with the ESD device, and the ESD device is connected with the DCS device.
The monitoring control device further comprises a valve assembly, and the pressure transmitter and the valve assembly are sequentially arranged on the main pipeline along the flowing direction of the terminating agent in the main pipeline.
Wherein the valve assembly is connected to the ESD device.
Wherein the valve assembly comprises at least three valve bodies.
The monitoring control device further comprises a pressure switch assembly, and the pressure switch assembly and the valve assembly are sequentially arranged on the main pipeline along the flowing direction of the terminating agent in the main pipeline.
The pressure switch assembly comprises pressure switches which are arranged corresponding to the valve bodies, and the pressure switches and the valve bodies are sequentially and alternately arranged on the main pipeline along the flow direction of the terminating agent in the main pipeline.
Wherein the pressure switch assembly is connected with the ESD device.
Wherein the pressure transmitter is located between the pressure switch and the valve body proximate the emergency terminator cylinder.
The pressure transmitter is connected with the main pipeline through a branch pipeline, and a control valve is arranged on the branch pipeline.
Wherein the polymerizer is connected to the ESD device.
(III) advantageous effects
The technical scheme of the invention has the following advantages: in the polymerization reaction system of the embodiment of the invention, the outlet of the emergency terminator gas cylinder is communicated with the inlet of the polymerization kettle through the connecting main pipeline, namely, the terminator in the emergency terminator gas cylinder can flow into the polymerization kettle through the main pipeline, the main pipeline is provided with the pressure transmitter and the valve component in sequence along the flow direction of the terminator, the pressure transmitter can monitor and collect the real-time pressure value of the terminator in the main pipeline, the ESD device can obtain the real-time pressure value of the terminator in the main pipeline through the connection with the pressure transmitter, the ESD device divides the obtained real-time pressure signal of the terminator into one path and sends the one path to the DCS device, the DCS device configures the pressure signal, increases the first-stage and second-stage alarm and historical trend and displays the trend, therefore, an operator can monitor whether the pressure value of the terminator output by the emergency terminator gas cylinder reaches the pressure value of the polymerization kettle in real time, the current pressure condition and the historical trend of the emergency terminator can be visually checked, the running condition of the emergency terminator can be accurately judged, a leakage point can be found in time for checking, and the abnormal condition can be processed; can carry out accurate evidence of getting to this pressure value after the accident takes place.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the technical solutions will be further explained with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the structure of a polymerization system according to an embodiment of the present invention.
In the figure:
1: a polymerization kettle;
2: an emergency terminator cylinder;
3: monitoring a control device; 31: a pressure transmitter; 32: an ESD device; 33: a DCS device; 34: a valve assembly; 35: a pressure switch assembly; 341: a first valve body; 342: a second valve body; 343: a third valve body; 351: a first pressure switch; 352: a second pressure switch; 353: a third pressure switch;
4: a main pipeline;
5: branch pipelines; 51: and (4) controlling the valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, "plurality", "plural groups" means two or more, and "several", "several groups" means one or more.
As shown in fig. 1, the polymerization reaction system provided by the embodiment of the present invention includes a polymerizer 1, an emergency terminator gas cylinder 2, and a monitoring control device 3, where the polymerizer 1 and the emergency terminator gas cylinder 2 are communicated through a main pipe 4, the monitoring control device 3 includes a pressure transmitter 31, an ESD (emergency stop system) device 32, and a DCS (distributed control system) device 33, the pressure transmitter 31 is communicated with the main pipe 4, the pressure transmitter 31 is connected with the ESD device 32, and the ESD device 32 is connected with the DCS device 33.
In the polymerization reaction system of the embodiment of the invention, the outlet of the emergency terminator gas cylinder 2 is communicated with the inlet of the polymerization kettle 1 through the main connecting pipe 4, namely, the terminator in the emergency terminator gas cylinder 2 can flow into the polymerization kettle 1 through the main pipe 4, the main pipe 4 is sequentially provided with the pressure transmitter 31 and the valve assembly 34 along the flow direction of the terminator, the pressure transmitter 31 can monitor and collect the real-time pressure value of the terminator in the main pipe 4, the ESD device 32 can be connected with the pressure transmitter 31 to obtain the real-time pressure value of the terminator in the main pipe 4, the ESD device 32 divides the obtained real-time pressure signal of the terminator into one path and sends the one path to the DCS device 33, the DCS device 33 configures the pressure signal, and increases the first-level, second-level alarming and historical trends and displays the trend, therefore, an operator can monitor whether the pressure value of the terminator output from the emergency terminator gas cylinder 2 reaches the pressure value requirement of entering the polymerization kettle 1 in real, the current pressure condition and the historical trend of the emergency terminator can be visually checked, the running condition of the emergency terminator can be accurately judged, a leakage point can be found in time for checking, and the abnormal condition can be processed; can carry out accurate evidence of getting to this pressure value after the accident takes place.
In this embodiment, the pressure transmitter 31 is a flange pressure transmitter 31.
Wherein, the monitoring control device 3 further comprises a valve assembly 34, and the pressure transmitter 31 and the valve assembly 34 are sequentially arranged on the main pipeline 4 along the flowing direction of the terminator in the main pipeline 4. In this embodiment, the main pipe 4 is further provided with a valve assembly 34, the terminating agent in the main pipe 4 firstly passes through the pressure transmitter 31 and then reaches the valve assembly 34, after the polymerization reaction in the polymerizer 1 is abnormal, when the pressure value of the terminating agent in the main pipe 4 obtained through the DCS device 33 meets the requirement of entering the polymerizer 1, the valve assembly 34 is controlled to be opened by the ESD device 32, and the main pipe 4 inputs the terminating agent into the polymerizer 1. In this embodiment, the pressure of the terminating agent should be greater than or equal to 2.5 MPa.
Wherein the valve assembly 34 is connected to the ESD device 32. In this embodiment, the pressure transmitter 31 sends a pressure signal of the terminating agent to the ESD device 32 in real time, the ESD device 32 monitors that the pressure value meets the input requirement, and when the polymerization reaction in the polymerizer 1 is abnormal, the valve assembly 34 is controlled to open to add the terminating agent into the polymerizer 1, thereby implementing automatic control of emergency shutdown of the polymerizer 1.
Wherein the valve assembly 34 comprises at least three valve bodies. In order to ensure the comprehensive coverage of the monitoring of the pressure value of the terminating agent in the main pipeline 4, at least three valve bodies are arranged on the main pipeline 4. In this embodiment, the valve assembly 34 is composed of three valve bodies, and the three valve bodies are all connected in communication with the ESD device 32, and sequentially include a first valve body 341, a second valve body 342, and a third valve body 343 in the flow direction of the terminator in the main pipe 4, and when the real-time pressure of the terminator in the main pipe section between the outlet of the emergency terminator gas cylinder 2 and the first valve body 341 is monitored, the first valve body 341 is opened and the second valve body 342 and the third valve body 343 are closed, and when the real-time pressure of the terminator in the main pipe section between the outlet of the emergency terminator gas cylinder 2 and the second valve body 342 is monitored, the first valve body 341 and the second valve body 342 are opened and the third valve body 343 is closed. While monitoring the real-time pressure of the terminating agent within the entire main pipe section, the first valve body 341, the second valve body 342, and the third valve body 343 are opened. Here, it is also convenient to find out in which pipe section the terminating agent has insufficient pressure, and maintenance and solution are convenient. In other embodiments, more valves may be provided depending on the length of the main conduit 4 and other monitoring requirements.
Wherein, the monitoring control device 3 further comprises a pressure switch assembly 35, and the pressure switch assembly 35 and the valve assembly 34 are sequentially arranged on the main pipe 4 along the flowing direction of the terminating agent in the main pipe 4. In this embodiment, main pipe 4 is further provided with pressure switch assembly 35, the terminating agent in main pipe 4 passes through valve assembly 34 after passing through pressure switch assembly 35, so pressure switch assembly 35 is used for reflecting the position that the terminating agent flows in main pipe 4 in real time, after knowing the position that the terminating agent passes through pressure switch assembly 35, can be convenient for in time close valve assembly 34 on the follow-up main pipe 4 in this position, avoid monitoring that the pressure value of terminating agent does not accord with the input standard at pressure transmitter 31, fail to in time close corresponding valve assembly 34 because of unable concrete mobile position who obtains the terminating agent, make the terminating agent flow into polymerizer 1, cause polymerizer 1 to be impaired.
Wherein, pressure switch subassembly 35 includes the pressure switch that corresponds the setting with each valve body, and pressure switch sets up on trunk line 4 with the valve body along the flowing direction of terminating agent in trunk line 4 in proper order in turn. In order to ensure that the flowing position of the terminating agent is reflected in the main pipeline 4 in real time and fully covers, each valve body is correspondingly provided with a pressure switch, the pressure switches and the corresponding valve bodies form a group, the pressure switches are positioned between the valve bodies and another valve body adjacent to the rear part along the flowing direction of the terminating agent, the terminating agent in the main pipeline 4 passes through the valve after passing through the pressure switches, and the pressure switches are used for reflecting the position of the valve body whether the terminating agent in the main pipeline 4 flows to or not in real time. In this embodiment, the valve assembly 34 is composed of three valve bodies, so the pressure switch assembly 35 is also composed of three pressure switches, and the three pressure switches are arranged in one-to-one correspondence with the three valve bodies, and sequentially include a first pressure switch 351, a first valve body 341, a second pressure switch 352, a second valve body 342, a third pressure switch 353, and a third valve body 343 along the flow direction of the terminating agent in the main pipe 4. The first pressure switch 351 is activated to verify the flow of the terminator in the main pipe 4 to the first valve 341, the second pressure switch 352 is activated to verify the flow of the terminator in the main pipe 4 to the second valve 342, and the third pressure switch 353 is activated to verify the flow of the terminator in the main pipe 4 to the third valve 343.
Wherein the pressure switch assembly 35 is connected to the ESD device 32. In this embodiment, the ESD device 32 obtains signals from each pressure switch in the pressure switch assembly 35 to control the opening and closing of the corresponding valve body in the valve assembly 34. Accordingly, the ESD device 32 can control the respective first valve 341, second valve 342, and third valve 343 to be opened and closed in accordance with the real-time monitored pressure value of the pressure transmitter 31 in cooperation with the operations of the first pressure switch 351, second pressure switch 352, and third pressure switch 353.
Wherein the pressure transmitter 31 is located between the pressure switch and the valve body near the emergency terminator gas cylinder 2. In this embodiment, the pressure transmitter 31 is located between a group of pressure switches and valve bodies closest to the emergency terminator gas cylinder 2, that is, the first pressure switch 351 and the first valve body 341, the terminator flows out from the emergency terminator gas cylinder 2, then passes through the first pressure switch 351, and then passes through the pressure transmitter 31, and at this time, if the real-time pressure value of the terminator does not meet the requirement of inputting into the polymerizer 1, the DCS device 33 can issue a sound alarm in time to prompt an operator that there is a problem in the pressure of the emergency terminator, and please check and remove the fault in time.
Wherein, pressure transmitter 31 is connected with main pipeline 4 through branch pipeline 5, is equipped with control valve 51 on the branch pipeline 5. In this embodiment, the main pipe 4 is divided into a first pipe section and a second pipe section, one end of the first pipe section is connected to the outlet of the emergency terminator gas cylinder 2, the other end of the first pipe section is connected to the first interface of the three-way pipe joint, one end of the second pipe section is connected to the second interface of the three-way pipe joint, the other end of the second pipe section is connected to the inlet of the polymerizer 1, the third interface of the three-way pipe joint is connected to one end of the branch pipe 5, and the other end of the branch pipe 5 is provided with. The control valve 51 on the branch pipe 5 opens to prevent the terminator that enters the pressure transmitter 31 from flowing back, affecting the pressure detection of the pressure transmitter 31.
In this embodiment, the three-way pipe joint is connected with the main pipe 4 and the branch pipe 5 by welding.
Wherein polymerizer 1 is connected to ESD device 32. The logic controller of the ESD device 32 performs interlocking control on the valve assembly 34, wherein the interlocking conditions are the pressure state, the temperature state and the stirring speed of the internal reactants of the polymerization kettle 1, and when the production of the polymerization kettle 1 is abnormal and the interlocking conditions of the ESD device 32 are met, the valves are controlled to be opened correspondingly to add the emergency terminator.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A polymerization reaction system, characterized by: including polymeric kettle, urgent terminator gas cylinder and monitoring control device, polymeric kettle with urgent terminator gas cylinder passes through the trunk line intercommunication, monitoring control device includes pressure transmitter, ESD device and DCS device, pressure transmitter with the trunk line intercommunication, pressure transmitter with the ESD device is connected, the ESD device with the DCS device is connected.
2. The polymerization reaction system of claim 1, wherein: the monitoring control device further comprises a valve assembly, and the pressure transmitter and the valve assembly are sequentially arranged on the main pipeline along the flowing direction of the terminating agent in the main pipeline.
3. The polymerization reaction system according to claim 2, wherein: the valve assembly is connected to the ESD device.
4. The polymerization reaction system of claim 3, wherein: the valve assembly includes at least three valve bodies.
5. The polymerization reaction system according to claim 4, wherein: the monitoring control device further comprises a pressure switch assembly, and the pressure switch assembly and the valve assembly are arranged on the main pipeline in sequence along the flowing direction of the terminating agent in the main pipeline.
6. The polymerization reaction system of claim 5, wherein: the pressure switch assembly comprises pressure switches which are arranged corresponding to the valve bodies, and the pressure switches and the valve bodies are sequentially and alternately arranged on the main pipeline along the flow direction of the terminating agent in the main pipeline.
7. The polymerization reaction system of claim 5, wherein: the pressure switch assembly is connected with the ESD device.
8. The polymerization reaction system according to claim 6, wherein: the pressure transmitter is located between the pressure switch and the valve body proximate the emergency terminator gas cylinder.
9. The polymerization reaction system of claim 1, wherein: the pressure transmitter is connected with the main pipeline through a branch pipeline, and a control valve is arranged on the branch pipeline.
10. The polymerization reaction system according to any one of claims 1 to 9, wherein: the polymerizer is connected to the ESD device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255793.7A CN111468051A (en) | 2020-04-02 | 2020-04-02 | Polymerization reaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255793.7A CN111468051A (en) | 2020-04-02 | 2020-04-02 | Polymerization reaction system |
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| CN111468051A true CN111468051A (en) | 2020-07-31 |
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| CN202010255793.7A Pending CN111468051A (en) | 2020-04-02 | 2020-04-02 | Polymerization reaction system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29723396U1 (en) * | 1997-02-12 | 1998-09-03 | Th. Goldschmidt Ag, 45127 Essen | Emergency stop for chemical reactions |
| US7973111B2 (en) * | 2003-06-02 | 2011-07-05 | Fina Technology, Inc. | Mechanically operated kill agent injection safety system and method to stop a runaway chemical reaction |
| CN102952231A (en) * | 2011-08-09 | 2013-03-06 | 住友化学株式会社 | Apparatus and process for producing polymer |
| CN103109243A (en) * | 2010-06-24 | 2013-05-15 | 博里利斯股份公司 | Iterative production process control |
| CN208642597U (en) * | 2018-09-10 | 2019-03-26 | 陕西金泰氯碱化工有限公司 | A kind of safety-type polymeric kettle emergency stopping system |
| CN209205246U (en) * | 2018-10-30 | 2019-08-06 | 金川集团股份有限公司 | The device of terminator is added when a kind of polymerization reaction is completed |
-
2020
- 2020-04-02 CN CN202010255793.7A patent/CN111468051A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29723396U1 (en) * | 1997-02-12 | 1998-09-03 | Th. Goldschmidt Ag, 45127 Essen | Emergency stop for chemical reactions |
| US7973111B2 (en) * | 2003-06-02 | 2011-07-05 | Fina Technology, Inc. | Mechanically operated kill agent injection safety system and method to stop a runaway chemical reaction |
| CN103109243A (en) * | 2010-06-24 | 2013-05-15 | 博里利斯股份公司 | Iterative production process control |
| CN102952231A (en) * | 2011-08-09 | 2013-03-06 | 住友化学株式会社 | Apparatus and process for producing polymer |
| CN208642597U (en) * | 2018-09-10 | 2019-03-26 | 陕西金泰氯碱化工有限公司 | A kind of safety-type polymeric kettle emergency stopping system |
| CN209205246U (en) * | 2018-10-30 | 2019-08-06 | 金川集团股份有限公司 | The device of terminator is added when a kind of polymerization reaction is completed |
Non-Patent Citations (5)
| Title |
|---|
| 中国石油化工集团公司安全环保局: "《石油化工安全技术 初级本》", 30 April 2003, 中国石化出版社 * |
| 中国硅酸盐学会陶瓷分会建筑卫生陶瓷专业委员会: "《现代建筑卫生陶瓷工程师手册》", 31 August 1998, 中国建材工业出版社 * |
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Application publication date: 20200731 |