CN216079326U - Atmospheric tower purge gas discharge system of methyl ethyl ketone device - Google Patents
Atmospheric tower purge gas discharge system of methyl ethyl ketone device Download PDFInfo
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- CN216079326U CN216079326U CN202122254988.2U CN202122254988U CN216079326U CN 216079326 U CN216079326 U CN 216079326U CN 202122254988 U CN202122254988 U CN 202122254988U CN 216079326 U CN216079326 U CN 216079326U
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Abstract
The utility model relates to a purge gas discharge system of an atmospheric tower of a methyl ethyl ketone device, wherein a V906 tank is connected with a first pressure control valve assembly and a second pressure control valve assembly which are arranged at intervals, the output end of the first pressure control valve assembly and the output end of the second pressure control valve assembly are respectively connected with a second input pipeline, a vent pipeline for venting a purge gas high point is connected on a first output pipeline, and a middle pipeline for returning part of gas to the V906 tank through the vent pipeline, the first pressure control valve assembly and the second input pipeline and then conveying the gas to an external flare header pipe is connected between the vent pipeline and the first pressure control valve assembly. In the utility model, the purge gas of the V906 tank is discharged into the flare header pipe through the first valve component, the intermediate pipeline, the first pressure control component and the second input pipeline according to the system pressure in the process of conveying the purge gas to an outside gas cabinet instead of the existing direct high-point emptying, so that the pressure of the purge gas system is conveniently controlled, and the influence of the pressure fluctuation of the flare header pipe on the operation of the normal pressure tower is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a purge gas discharge system of an atmospheric tower of a methyl ethyl ketone device.
Background
The purge gas of the atmospheric tower of the methyl ethyl ketone device is generally uniformly discharged into an A/C area of a V906 tank after being deeply cooled by freezing saline water, and is discharged into a purge gas main pipe after being washed in the V906 tank, and the purge gas main pipe is discharged in the following modes in the prior art:
1. the mixture is discharged from a high point on the spot through a regulating valve and a flame arrester;
2. and discharging to a gas tank or a safety valve bypass to a torch main pipe.
For the first discharge mode, as the discharge medium is flammable and explosive, the discharge medium is discharged from a high point on the spot through the regulating valve and the flame arrester, and certain safety risk exists in the weather of thunderstorm; for the second discharge mode, when the gas is discharged to the gas holder or the flare header pipe, the pressure fluctuation of the flare header pipe of the purge gas system is influenced, so that the operation fluctuation of the atmospheric tower is caused, and the product quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art, and provides the atmospheric tower purge gas discharge system of the methyl ethyl ketone device, which can control the pressure of the purge gas system, effectively reduce the influence of the pressure fluctuation of a flare header pipe on the operation of the atmospheric tower, improve the operation stability of the atmospheric tower and eliminate the safety risk of high-point purge.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a purge gas discharge system of an atmospheric tower of a methyl ethyl ketone device comprises a V906 tank for receiving purge gas from the atmospheric tower of the methyl ethyl ketone device, wherein a first input pipeline and a second input pipeline for receiving the purge gas, and a first output pipeline and a second output pipeline for discharging the purge gas are connected to the V906 tank, and the purge gas discharge system is characterized in that: the V906 tank is also connected with a first pressure control valve assembly and a second pressure control valve assembly which are arranged at intervals, the output end of the first pressure control valve assembly and the output end of the second pressure control valve assembly are respectively connected with a second input pipeline, the first output pipeline is connected with an emptying pipeline for emptying high points of purge gas, a middle pipeline for returning part of gas to the V906 tank through the emptying pipeline, the first pressure control valve assembly and the second input pipeline and then conveying the gas to an out-of-range torch main pipe is connected between the emptying pipeline and the first pressure control valve assembly, and a hand valve is arranged on the middle pipeline.
Preferably, the first input pipe is provided with a gate valve arranged close to the V906 tank. This configuration facilitates control of the gas input to the first input line to better control the pressure balance within the V906 tank.
Preferably, the first output pipeline is provided with a discharge pipeline for exhausting the purge gas to an outside air cabinet, and the discharge pipeline is provided with a first valve component and an 8-shaped blind plate arranged in the first valve component. This structure is favorable to controlling the air current velocity of flow and the stationarity on the first pipeline, and then improves the stability to V906 jar internal pressure control.
Preferably, the second output pipeline supplies and discharges the purge gas to the extra-critical flare header pipe, and a second valve assembly and an 8-shaped blind plate positioned at the front side of the second valve assembly are arranged on the second output pipeline. This structure is favorable to controlling the air current velocity of flow and the stationarity on the second pipeline, and then improves the stability to V906 jar internal pressure control.
Preferably, the V906 tank is provided with a pressure detector for detecting pressure in the tank, the emptying pipeline is provided with a second valve assembly for controlling whether the pipeline is communicated or not, and the second valve assembly is linked with the pressure detector. The pressure in the V906 tank is detected at any moment through the pressure detector, and the opening and closing of the second valve component are controlled according to the detected pressure, so that the gas discharge condition of the V906 tank is regulated in real time according to actual needs, and the stability of the pressure control in the V906 tank is improved.
Compared with the prior art, the utility model has the advantages that: in the utility model, the purge gas of the V906 tank is discharged into the flare header pipe through the first valve component, the intermediate pipeline, the first pressure control component and the second input pipeline according to the system pressure in the process of conveying the purge gas to an external gas cabinet instead of the conventional direct high-point emptying, so that the pressure of the purge gas system is conveniently controlled, the influence of the pressure fluctuation of the flare header pipe on the operation of the normal pressure tower is effectively reduced, the operation stability of the normal pressure tower is improved, and the safety risk existing in the high-point emptying process is eliminated.
Drawings
FIG. 1 is a system flow diagram of an embodiment of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the atmospheric tower purge gas discharge system of the methyl ethyl ketone device of the present embodiment includes a V906 tank 1 for receiving purge gas from the atmospheric tower of the methyl ethyl ketone device, and the V906 tank 1 is connected with a first input pipeline 11 and a second input pipeline 12 for receiving purge gas, and a first output pipeline 21 and a second output pipeline 22 for discharging purge gas.
The V906 tank 1 is also connected with a first pressure control valve assembly 10 and a second pressure control valve assembly 20 which are arranged at intervals, the output end of the first pressure control valve assembly 10 and the output end of the second pressure control valve assembly 20 are respectively connected with a second input pipeline 12, and a first output pipeline 21 is connected with a vent pipeline 3 for high-point venting of the purge gas.
An intermediate pipeline 4 for returning part of the gas to the V906 tank 1 through the vent pipeline 3, the first pressure-controlled valve assembly 10 and the second input pipeline 12 and then to an out-of-range flare header is connected between the vent pipeline 3 and the first pressure-controlled valve assembly 10, and a hand valve 41 is arranged on the intermediate pipeline 4.
The first inlet conduit 11 is provided with a gate valve 5 arranged close to the V906 tank 1. This configuration facilitates control of the gas input to the first input line 11 to better control the pressure balance within the V906 tank 1.
The first output pipeline 11 is provided with a discharge pipeline 6 for discharging exhausted air to an outside air cabinet, and the discharge pipeline 6 is provided with a first valve component 61 and an 8-shaped blind plate 62 arranged in the first valve component 61. This structure is favorable to controlling the air current velocity of flow and the stationarity on the first pipeline 11, and then improves the stability to pressure control in V906 jar 1.
The second output pipeline 22 is used for discharging the purge gas to the extra-critical flare header, and the second output pipeline 22 is provided with a second valve assembly 221 and an 8-shaped blind plate 222 positioned at the front side of the second valve assembly 221. This configuration facilitates control of the airflow rate and smoothness over the second delivery conduit 22, thereby improving stability of pressure control within the V906 tank 1.
The V906 tank 1 is provided with a pressure detector 7 for detecting the pressure in the tank, the emptying pipeline 3 is provided with a second valve assembly 31 for controlling whether the pipeline is communicated or not, and the second valve assembly 31 is linked with the pressure detector 7. The pressure detector 7 detects the pressure in the V906 tank 1 at any time, and controls the opening and closing of the second valve assembly 31 according to the detected pressure, so that the gas discharge condition of the V906 tank 1 is adjusted in real time according to actual needs, and the stability of the pressure control in the V906 tank 1 is improved.
In the embodiment, the V906 tank 1 purge gas is discharged from the existing direct high-point emptying into the process of conveying to an outdoor gas cabinet, and the flare header pipe is discharged through the first valve component 31, the intermediate pipeline 4, the first pressure control component 10 and the second input pipeline 12 according to the system pressure, so that the influence of the flare header pipe pressure fluctuation on the operation of the atmospheric tower is effectively reduced, the operation stability of the atmospheric tower is improved, and the safety risk existing during the high-point emptying is eliminated.
Claims (5)
1. A purge gas discharge system of an atmospheric tower of a methyl ethyl ketone device comprises a V906 tank for receiving purge gas from the atmospheric tower of the methyl ethyl ketone device, wherein a first input pipeline and a second input pipeline for receiving the purge gas, and a first output pipeline and a second output pipeline for discharging the purge gas are connected to the V906 tank, and the purge gas discharge system is characterized in that: the V906 tank is also connected with a first pressure control valve assembly and a second pressure control valve assembly which are arranged at intervals, the output end of the first pressure control valve assembly and the output end of the second pressure control valve assembly are respectively connected with a second input pipeline, the first output pipeline is connected with an emptying pipeline for emptying high points of purge gas, a middle pipeline for returning part of gas to the V906 tank through the emptying pipeline, the first pressure control valve assembly and the second input pipeline and then conveying the gas to an out-of-range torch main pipe is connected between the emptying pipeline and the first pressure control valve assembly, and a hand valve is arranged on the middle pipeline.
2. The atmospheric tower purge gas discharge system of methyl ethyl ketone unit according to claim 1, characterized in that: and a gate valve arranged close to the V906 tank is arranged on the first input pipeline.
3. The atmospheric tower purge gas discharge system of methyl ethyl ketone unit according to claim 1, characterized in that: the first output pipeline is provided with a discharge pipeline for discharging exhausted gas to an outside air cabinet, and the discharge pipeline is provided with a first valve component and an 8-shaped blind plate arranged in the first valve component.
4. The atmospheric tower purge gas discharge system of methyl ethyl ketone unit according to claim 1, characterized in that: the second output pipeline is used for discharging the purge gas to the out-of-limit flare header pipe, and is provided with a second valve assembly and an 8-shaped blind plate positioned on the front side of the second valve assembly.
5. The atmospheric tower purge gas discharge system of a methyl ethyl ketone device according to any one of claims 1 to 4, characterized in that: the V906 tank is provided with a pressure detector for detecting the pressure in the tank, the emptying pipeline is provided with a second valve assembly for controlling the communication of the pipeline, and the second valve assembly is linked with the pressure detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122254988.2U CN216079326U (en) | 2021-09-16 | 2021-09-16 | Atmospheric tower purge gas discharge system of methyl ethyl ketone device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122254988.2U CN216079326U (en) | 2021-09-16 | 2021-09-16 | Atmospheric tower purge gas discharge system of methyl ethyl ketone device |
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| CN216079326U true CN216079326U (en) | 2022-03-18 |
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| CN202122254988.2U Active CN216079326U (en) | 2021-09-16 | 2021-09-16 | Atmospheric tower purge gas discharge system of methyl ethyl ketone device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507298A (en) * | 2022-10-09 | 2022-12-23 | 北京中科富海低温科技有限公司 | Hydrogen discharging device and hydrogen discharging system |
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2021
- 2021-09-16 CN CN202122254988.2U patent/CN216079326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507298A (en) * | 2022-10-09 | 2022-12-23 | 北京中科富海低温科技有限公司 | Hydrogen discharging device and hydrogen discharging system |
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