CN219066028U - Emergency one-key parking system of calcium carbide method VCM monomer production system - Google Patents
Emergency one-key parking system of calcium carbide method VCM monomer production system Download PDFInfo
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- CN219066028U CN219066028U CN202223247746.1U CN202223247746U CN219066028U CN 219066028 U CN219066028 U CN 219066028U CN 202223247746 U CN202223247746 U CN 202223247746U CN 219066028 U CN219066028 U CN 219066028U
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- acetylene
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- hydrogen chloride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses an emergency one-key parking system of a calcium carbide method VCM monomer production system, which comprises a mixer, wherein a hydrogen chloride cut-off valve and a hydrogen chloride regulating valve are sequentially arranged on a hydrogen chloride inlet pipe of the mixer, an acetylene cut-off valve and an acetylene regulating valve are sequentially arranged on an acetylene inlet pipe of the mixer, and a mixer explosion port is formed in the top of the mixer; the device also comprises a PLC and a DCS computer, wherein the PLC is in signal connection with the DCS computer, and is respectively in signal connection with the hydrogen chloride cut-off valve, the hydrogen chloride regulating valve, the acetylene cut-off valve and the acetylene regulating valve. The emergency PLC system is designed, remote rapid safe parking under the fault state of the DCS computer system is realized, and life safety and equipment safety in the system production process are ensured.
Description
Technical Field
The utility model belongs to the technical field of chemical production equipment, and particularly relates to an emergency one-key parking system of a calcium carbide method VCM monomer production system.
Background
In the production of PVC by a calcium carbide method, the adopted technology is that acetylene is mixed with hydrogen chloride, the vinyl chloride is generated under the action of mercury chloride catalyst, and the hydrogen and the chlorine from a caustic soda device are generated by combustion in a synthesis furnace.
Under the condition that the ratio of hydrogen and chlorine in the synthetic furnace is improper or the purity is too high, free chlorine is very easy to generate, free chlorine and acetylene are mixed in a mixer and react to generate chloroacetylene, a large amount of heat is released in the process, the mixer explodes, a control point is arranged on a central control computer to monitor the temperature of the mixer in daily production, when the temperature of the mixer rises, manual and timely stopping is needed, but in the manual and manual stopping process, the number of the valves is required to be closed, delay exists in emergency stopping, and safety risks exist.
Disclosure of Invention
The utility model provides an emergency one-key parking system of a calcium carbide method VCM monomer production system, and aims to solve the problem that a mixer needs to be manually parked in the calcium carbide method PVC production, so that safety risks exist.
Therefore, the utility model adopts the following technical scheme:
an emergency one-key parking system for a calcium carbide VCM monomer production system comprises a mixer, a hydrogen chloride cut-off valve, a hydrogen chloride regulating valve, an acetylene cut-off valve, an acetylene regulating valve, a mixer explosion port, a PLC (programmable logic controller) and a DCS (distributed control system) computer.
Furthermore, the top of the mixer is provided with a bursting hole, so that effective bursting can be carried out under the conditions of instrument and linkage failure, and the mixer and subsequent equipment and facilities are protected.
The hydrogen chloride cut-off valve and the hydrogen chloride regulating valve are arranged at the position where the hydrogen chloride enters the main pipe of the mixer, and the hydrogen chloride cut-off valve and the hydrogen chloride regulating valve are sequentially arranged.
And an acetylene cut-off valve and an acetylene regulating valve are sequentially arranged on the acetylene inlet pipeline of the mixer.
And a hydrogen chloride cut-off valve, a hydrogen chloride regulating valve, an acetylene cut-off valve and an acetylene regulating valve on an inlet pipeline of the mixer are integrally provided with a chain and a PLC (programmable logic controller) controller.
The PLC is interlocked with a one-key cut-off button on a DCS computer page, and can realize automatic cut-off of a hydrogen chloride cut-off valve, a hydrogen chloride regulating valve, an acetylene cut-off valve and an acetylene regulating valve at the same time under the condition that the one-key cut-off button is started.
The PLC is connected with the DCS computer through signals, and is respectively connected with the hydrogen chloride cut-off valve, the hydrogen chloride regulating valve, the acetylene cut-off valve and the acetylene regulating valve through signals.
The utility model has the beneficial effects that:
aiming at the timeliness problem that a great amount of heat is generated due to free chlorine II in the mixer to explode and stop in emergency, key control points of a scientific system are selected, interlocking logic among valves, a PLC and a central control operation computer is organized and arranged, an emergency PLC system is designed, remote quick and safe stopping under the fault state of a DCS computer system is realized, and personal safety and equipment safety in the production process of the system are ensured.
Drawings
FIG. 1 is a logic diagram of the operation of the present utility model;
in the figure: 1-a mixer; a 2-hydrogen chloride shut-off valve; 3-hydrogen chloride regulating valve; a 4-acetylene shut-off valve; a 5-acetylene regulating valve; 6-DCS computer; 7-a PLC controller; 8-mixer burst.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1, the emergency one-key parking system of the calcium carbide VCM monomer production system comprises a mixer 1, a hydrogen chloride cut-off valve 2, a hydrogen chloride regulating valve 3, an acetylene cut-off valve 4, an acetylene regulating valve 5, a mixer explosion port 8, a PLC (programmable logic controller) 7 and a DCS (distributed control system) computer 6.
The hydrogen chloride gas inlet pipe of the mixer 1 is sequentially provided with a hydrogen chloride cut-off valve 2 and a hydrogen chloride regulating valve 3, the acetylene gas inlet pipe of the mixer 1 is sequentially provided with an acetylene cut-off valve 4 and an acetylene regulating valve 5, and the top of the mixer 1 is provided with a mixer explosion port 8.
The working principle of the utility model is as follows:
when the system is in normal operation, the hydrogen chloride cut-off valve 2, the hydrogen chloride regulating valve 3, the acetylene cut-off valve 4 and the acetylene regulating valve 5 are all put into an automatic state, and the valves are all in an open state, so that the PIC controller 7 and a one-key cut-off button of the DCS computer 6 are put into linkage.
When the emergency stop is needed due to the system failure, a central control room operator can automatically close the hydrogen chloride cut-off valve 2, the hydrogen chloride regulating valve 3, the acetylene cut-off valve 4 and the acetylene regulating valve 5 by clicking a one-key cut-off button of the DCS computer 6, so that the timeliness of the emergency stop is ensured, the hysteresis of the emergency stop caused by the fact that the original operation needs to independently close the valve is avoided, and the safety stop of the device is facilitated.
Claims (1)
1. The emergency one-key parking system of the calcium carbide VCM monomer production system is characterized by comprising a mixer (1), wherein a hydrogen chloride cut-off valve (2) and a hydrogen chloride regulating valve (3) are sequentially arranged on a hydrogen chloride inlet pipe of the mixer (1), an acetylene cut-off valve (4) and an acetylene regulating valve (5) are sequentially arranged on an acetylene inlet pipe of the mixer (1), and a mixer explosion port (8) is formed in the top of the mixer (1);
the device also comprises a PLC (programmable logic controller) 7 and a DCS (distributed control system) computer 6, wherein the PLC 7 is in signal connection with the DCS computer 6, and the PLC 7 is in signal connection with the hydrogen chloride cut-off valve 2, the hydrogen chloride regulating valve 3, the acetylene cut-off valve 4 and the acetylene regulating valve 5 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247746.1U CN219066028U (en) | 2022-12-05 | 2022-12-05 | Emergency one-key parking system of calcium carbide method VCM monomer production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247746.1U CN219066028U (en) | 2022-12-05 | 2022-12-05 | Emergency one-key parking system of calcium carbide method VCM monomer production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219066028U true CN219066028U (en) | 2023-05-23 |
Family
ID=86371969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223247746.1U Active CN219066028U (en) | 2022-12-05 | 2022-12-05 | Emergency one-key parking system of calcium carbide method VCM monomer production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219066028U (en) |
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2022
- 2022-12-05 CN CN202223247746.1U patent/CN219066028U/en active Active
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