CN215524243U - Device for safely replacing four condensers with carbon residue in butadiene device - Google Patents
Device for safely replacing four condensers with carbon residue in butadiene device Download PDFInfo
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- CN215524243U CN215524243U CN202022596886.4U CN202022596886U CN215524243U CN 215524243 U CN215524243 U CN 215524243U CN 202022596886 U CN202022596886 U CN 202022596886U CN 215524243 U CN215524243 U CN 215524243U
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Abstract
The utility model discloses a device for safely replacing a four-condenser with extracted carbon in a butadiene device, belongs to the technical field of butadiene devices, and relates to a process technology for preparing butadiene by a butadiene device by adopting an acetonitrile method, wherein the four-condenser with extracted carbon comprises a pouring valve 5 and a pouring valve 6; a reverse-spraying valve 5 is connected on a pipeline between the condenser E-102A and the valve 5 on the dilution gas pipeline; a reverse-spraying valve 6 is connected on a pipeline between the condenser E-102B and the valve 6 on the dilution gas pipeline; when the shell layer of the condenser E-102A (or the condenser E-102B) is replaced, the shell layer material of the condenser E-102A (or the condenser E-102B (a heat exchanger) is replaced completely by using the inverted shower valve 2 (or the inverted shower valve 7) as an inlet and using the newly-added inverted shower valve 5 (or the inverted shower valve 6) as an outlet. The condenser E-102A or the condenser E-102B can realize single safe isolation without influencing the safe operation of the other running heat exchanger, thereby avoiding the potential safety hazard that materials cannot be replaced thoroughly in the overhauling process.
Description
Technical Field
The utility model belongs to the technical field of butadiene devices, relates to a process technology for preparing butadiene by a butadiene device by adopting an acetonitrile method, and particularly relates to a device for performing gas replacement cooking and liquid passivation on an industrial raffinate carbon four-heat exchanger.
Background
In a butadiene unit, alkane and most monoolefine are distilled from the top of a butadiene first extraction tower, enter a condenser E-102A and/or a condenser E-102B which takes water as condensate, are liquefied and flow into a reflux tank V-103, then a reflux pump P-102 of the butadiene first extraction tower is used for pressurizing, one part of the reflux liquid is adjusted to return to the uppermost part of a T-101A tower (T101 first extraction tower) through a flow meter FIC-105 as reflux liquid, and the other part of the reflux liquid is adjusted to be sent to a butylene water washing tower through a liquid level meter LICA103 and a flow meter FIC106 in series as raffinate, so as to wash out the entrained acetonitrile. In addition, a portion of the uncondensed gas is withdrawn from condenser E-102A and/or condenser E-102B and is passed via flow meter FIC104 to the top of the acetylene removal column T-104 for use as a diluent gas for the top carbon tetraalkyne fraction of the acetylene removal column.
If any heat exchanger leaks materials from the shell layer to the tube layer or leaks materials from the tube layer to the shell layer in the condenser E-102A and/or the condenser E-102B, one leaked heat exchanger needs to be isolated and repaired, and the other heat exchanger without leakage is continuously used.
The procedure for repairing the leaking heat exchanger is as follows (taking the condenser E-102A as an example for leakage): 1. and closing a valve 1, a valve 2, a valve 3 and a valve 4 at an inlet and an outlet of a shell pipe layer of the condenser E-102A. 2. And closing a shell layer dilution gas of the condenser E-102A to a valve 5 of the alkyne-removing tower T-104. 3. Injecting nitrogen into the pouring valve 1, and discharging nitrogen from the pouring valve 3 to perform tube layer replacement. 4. When the shell layer inverted-spraying valve 2 is flushed with nitrogen, no corresponding tower top inverted-spraying is used for exhausting, the nearest discharge point is the inverted-spraying valve 4, but the inverted-spraying valve 4 cannot be discharged outside, and because the condenser E-102B still works normally, dilution gas needs to be provided for the alkyne removal tower T-104, the complete replacement of shell layer materials of the condenser E-102A or the condenser E-102B cannot be realized by the design of the conventional device, and online inspection maintenance or integral replacement is carried out.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that in a condenser E-102A or a condenser E-102B of a butadiene device, if a shell layer of any heat exchanger leaks materials to the tube layer or the tube layer leaks the materials to the shell layer, the heat exchanger needs to be isolated, and the shell layer materials of the E-102AB heat exchanger cannot be emptied.
The technical scheme of the utility model is as follows: a device for safely replacing an industrial four-condenser with extracted residual carbon in a butadiene device is characterized by comprising a pouring valve 5 and a pouring valve 6; a reverse-spraying valve 5 is connected on a pipeline between the condenser E-102A and the valve 5 on the dilution gas pipeline; a reverse-spraying valve 6 is connected on a pipeline between the condenser E-102B and the valve 6 on the dilution gas pipeline; the condenser comprises a condenser E-102A and a condenser E-102B, the condenser E-102A and the condenser E-102B are arranged in the same butadiene device, and a diluent gas pipeline led out from a shell layer of the condenser E-102A is connected with the alkyne removal tower T-104 through a valve 5; a dilution air pipeline led out from a shell layer of the condenser E-102B is connected with the alkyne removal tower T-104 through a valve 6; the inverted shower valve 2 is connected with the shell of the condenser E-102A, and the inverted shower valve 7 is connected with the shell of the condenser E-102B.
Furthermore, the tube layer of the condenser is connected with the cooling water inlet and the cooling water outlet.
Furthermore, the shell layer of the condenser is connected with the material inlet and the material outlet.
Furthermore, the pipe layers of the condenser E-102A and the condenser E-102B are connected through a valve 4, and a cooling water inlet is led out from the pipe layers; the cooling water outlet led out from the tube layers of the condenser E-102A and the condenser E-102B is connected through a valve 3.
Furthermore, a material inlet led out from the shell layer of the condenser E-102A and the condenser E-102B is connected through a valve 1; and a material outlet led out from the shell layer of the condenser E-102A and the condenser E-102B is connected through a valve 2.
Further, the material outlets of the condenser E-102A and the condenser E-102B are respectively connected with a reflux tank V-103 through a valve 2.
Further, the device also comprises a pouring valve 1 and a pouring valve 3; the reverse-spraying valve 1 is connected with the E-102A tube layer of the condenser, and the reverse-spraying valve 3 is connected with the E-102A tube layer of the condenser.
Further, a diluent gas line leading from the shell of the condenser E-102A or the condenser E-102B is connected to the top of the acetylene removal column T-104 by means of a flow meter FIC 104.
The principle and the technical effect of the utility model are as follows:
by respectively additionally arranging the back-pouring valve 5 and the back-pouring valve 6 between the condenser E-102A (and the condenser E-102B) and the dilution gas pipeline valve 5 (and the valve 6), when shell layer replacement is carried out on the condenser E-102A or the condenser E-102B (namely a heat exchanger) of an extraction tower, the back-pouring valve 2 (or the back-pouring valve 7) is used as an inlet, and the newly-added back-pouring valve 5 (or the back-pouring valve 6) is used as an outlet, the shell layer materials of the condenser E-102A or the condenser E-102B are completely and cleanly replaced, so that the condenser E-102A or the condenser E-102B can realize single safe isolation without influencing the safe operation of the other heat exchanger in operation, and the potential safety hazard that the materials cannot be completely replaced in the maintenance process is avoided, the leaked heat exchanger can be safely isolated, meanwhile, the operation of the other heat exchanger which normally operates is not influenced, and the device cannot be stopped for maintenance due to the fact that the heat exchanger cannot be replaced, and huge economic loss of starting and stopping is caused.
The device can be maintained and replaced without stopping, the running time of the device is prolonged, the number of times of starting and stopping is reduced, the economic benefit is increased, the maintenance safety can be improved, and the potential safety hazard that flammable and explosive materials on the inner shell layer of the condenser cannot be replaced is avoided.
Drawings
Fig. 1 is a schematic diagram of the principles of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a device for safely replacing an industrial raffinate carbon four-heat exchanger in a butadiene device comprises a pouring valve 5 and a pouring valve 6; a reverse-spraying valve 5 is connected on a pipeline between the condenser E-102A and the valve 5 on the dilution gas pipeline; the reverse-spraying valve 6 is connected on the pipeline between the condenser E-102B and the valve 6 on the dilution gas pipeline.
The pouring valve 2 is connected with a shell layer of the condenser E-102A, and the pouring valve 5 is discharged when the pouring valve 2 is flushed with nitrogen. The reverse pouring valve 7 is connected with a shell layer of the condenser E-102B.
The principle is as follows: when the shell layer of the condenser E-102A (or the condenser E-102B) of an extraction tower is replaced, the shell layer material of the condenser E-102A or the condenser E-102B (a heat exchanger) is completely replaced by using the inverted shower valve 2 (or the inverted shower valve 7) as an inlet and using the newly-added inverted shower valve 5 (or the inverted shower valve 6) as an outlet.
And a shell layer diluent gas outlet pipeline of the condenser E-102A is connected with the alkyne removing tower T-104 through an alkyne removing tower valve 5.
Shell layer connection of the condenser: a material inlet (through a valve 1) and a material outlet (through a valve 2); the tube layer is connected with a cooling water inlet (through a valve 4) and a cooling water outlet (through a valve 3), and a dilution gas outlet is led out from the shell layer of the condenser; the dilution gas outlet line is provided with a (acetylene removal column) valve 5.
The material outlets of the condenser E-102A and the condenser E-102B are connected with a reflux tank V-103 through a valve 2.
The reverse-spraying valve 1 is connected with the E-102A tube layer of the condenser, and the reverse-spraying valve 3 is used as a nitrogen outlet and is connected with the E-102A tube layer of the condenser.
Further, the shell outlet lines from the condenser E-102A and/or the condenser E-102B are adjusted by a flow meter FIC104 and connected to the top of the alkyne removing column T-104.
The utility model mainly adds a pouring valve 5 and a pouring valve 6.
(1) A pouring valve 5 and a pouring valve 6 are additionally arranged between the condenser E-102A or the condenser E-102B (namely a heat exchanger) and the dilution gas pipeline valve 5 and the valve 6.
(2) When shell replacement of the condenser E-102A or the condenser E-102B of the extraction tower is carried out, the inverted shower valve 2 (or the inverted shower valve 7) is used as an inlet, the newly-added inverted shower valve 5 (or the inverted shower valve 6) is used as an outlet, shell materials of the condenser E-102A or the condenser E-102B are completely and cleanly replaced, the condenser E-102A or the condenser E-102B can be safely isolated from one another, safe operation of the other running heat exchanger is not influenced, and therefore device shutdown caused by the use of the inverted shower valve 4 is avoided. Thereby avoiding the safety risk that the condenser E-102A or the condenser E-102B only has an inlet pouring valve and does not have an outlet pouring valve.
Claims (8)
1. A device for safely replacing a four-condenser with carbon residue in a butadiene device is characterized by comprising a pouring valve 5 and a pouring valve 6; a reverse-spraying valve 5 is connected on a pipeline between the condenser E-102A and the valve 5 on the dilution gas pipeline; a reverse-spraying valve 6 is connected on a pipeline between the condenser E-102B and the valve 6 on the dilution gas pipeline;
the condenser comprises a condenser E-102A and a condenser E-102B, the condenser E-102A and the condenser E-102B are arranged in the same butadiene device, and a diluent gas pipeline led out from a shell layer of the condenser E-102A is connected with the alkyne removal tower T-104 through a valve 5; a dilution air pipeline led out from a shell layer of the condenser E-102B is connected with the alkyne removal tower T-104 through a valve 6; the inverted shower valve 2 is connected with the shell of the condenser E-102A, and the inverted shower valve 7 is connected with the shell of the condenser E-102B.
2. The apparatus of claim 1, wherein the condenser has a tube layer connected to the cooling water inlet and the cooling water outlet.
3. The apparatus of claim 1, wherein the shell of the condenser is connected to the feed inlet and the feed outlet.
4. The apparatus of claim 2, wherein the condenser E-102A and the condenser E-102B are connected by a valve 4, and the cooling water inlet is led out from the tube layer of the condenser E-102A; the cooling water outlet led out from the tube layers of the condenser E-102A and the condenser E-102B is connected through a valve 3.
5. The apparatus for safely replacing a carbon four-condenser in a butadiene plant according to claim 3, wherein the shell outlet material inlets of the condenser E-102A and the condenser E-102B are connected by a valve 1; and a material outlet led out from the shell layer of the condenser E-102A and the condenser E-102B is connected through a valve 2.
6. The apparatus of claim 5, wherein the condenser E-102A and the condenser E-102B are connected to the reflux drum V-103 through valve 2.
7. The apparatus of claim 2, further comprising a dump valve 1, a dump valve 3; the reverse-spraying valve 1 is connected with the E-102A tube layer of the condenser, and the reverse-spraying valve 3 is connected with the E-102A tube layer of the condenser.
8. An apparatus for the safe replacement of a carbon four-withdrawal condenser in a butadiene unit as set forth in claim 1 wherein the diluent gas line leading from the shell of condenser E-102A or E-102B is regulated by a flow meter FIC104 and connected to the top of the acetylene removal column T-104.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022596886.4U CN215524243U (en) | 2020-11-11 | 2020-11-11 | Device for safely replacing four condensers with carbon residue in butadiene device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022596886.4U CN215524243U (en) | 2020-11-11 | 2020-11-11 | Device for safely replacing four condensers with carbon residue in butadiene device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215524243U true CN215524243U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022596886.4U Active CN215524243U (en) | 2020-11-11 | 2020-11-11 | Device for safely replacing four condensers with carbon residue in butadiene device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215524243U (en) |
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2020
- 2020-11-11 CN CN202022596886.4U patent/CN215524243U/en active Active
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