CN220237799U - Protection device for discharging of fractionating tower - Google Patents
Protection device for discharging of fractionating tower Download PDFInfo
- Publication number
- CN220237799U CN220237799U CN202321597666.0U CN202321597666U CN220237799U CN 220237799 U CN220237799 U CN 220237799U CN 202321597666 U CN202321597666 U CN 202321597666U CN 220237799 U CN220237799 U CN 220237799U
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- Prior art keywords
- valve
- condenser
- cooling water
- pressure
- bleeder
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- 238000007599 discharging Methods 0.000 title abstract description 4
- 239000000498 cooling water Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000004821 distillation Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005194 fractionation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 239000012847 fine chemical Substances 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to the technical field of fine chemical engineering, and discloses a protection device for discharging of a fractionating tower, which comprises a distilling tower, wherein the distilling tower is connected with pressure monitoring; the safety valve inlet is connected with the shell side inlet of the bleeder condenser; the shell side outlet of the bleeder condenser is connected with the collecting tank; the cooling water supply cut-off valve is connected with the tube inlet of the bleeder condenser. Through related process calculation, equipment selection and automatic control, the method realizes organized collection of discharged matters, and the residual tail gas enters a tail gas recovery system under normal working conditions, so that safe discharge is realized, and meanwhile, the environmental protection requirement is met, and the safety and environmental protection problems of the discharge of a safety valve of a small chemical enterprise are solved; by the aid of the cooling backwater check valve, the bleeder condenser is in a water-free state under normal working conditions, the relief pressure is set to be equal to the pressure of the pressure sensor, the pressure monitoring is always in a monitoring state, and when the pressure of the distillation tower is monitored to rise to the pressure of the pressure sensor, the pressure sensor alarms, so that workers can be reminded of adjusting in time.
Description
Technical Field
The utility model relates to the technical field of fine chemical engineering, in particular to a protection device for discharging of a fractionating tower.
Background
There are many distillation towers in the chemical and petrochemical fields, and according to the requirements of the "petrochemical industry design fire protection standard" GB50160-2008 (2018 edition), a safety valve should be arranged on the distillation tower when the operating pressure of the tower top is more than 0.03KPa "to meet the safety requirements of an operating system. Many large and medium-sized chemical and petrochemical enterprises have perfect pressure relief discharge and torch systems. When the safety valve discharges, the discharged gas enters the torch system through the pressure relief discharge system, so that the discharged gas is safely treated. And some small-sized fine chemical enterprises are influenced by industrial properties, and generally only the tail gas absorption system under normal working conditions is arranged, and the conditions of pressure relief emission and a torch system are not provided. When the relief valve is released, because the release volume is great, the tail gas absorption system throughput does not satisfy the release volume requirement, causes very big potential safety hazard, causes very big influence to the environmental protection simultaneously.
The utility model discloses a distillation column safety relief system. Through related process calculation, equipment selection and automatic control, the method realizes the organized collection of discharged matters, and the residual tail gas enters a tail gas recovery system under normal working conditions. Realize safe release, satisfy the environmental protection requirement simultaneously.
Disclosure of Invention
The utility model aims to provide a protection device for the discharge of a fractionating tower, so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the protection device for the discharge of the fractionating tower comprises a distilling tower, wherein the distilling tower is connected with a pressure monitor; the safety valve inlet is connected with the shell side inlet of the bleeder condenser; the shell side outlet of the bleeder condenser is connected with the collecting tank; the cooling water supply cut-off valve is connected with a discharge condenser tube inlet; and the outlet of the tube pass of the bleeder condenser is connected with a cooling backwater check valve.
Preferably, the collection tank is connected to the inlet of the transfer pump.
Preferably, the inlet of the cooling water supply cut-off valve is connected with a cooling water supply system.
Preferably, the outlet of the cooling water return check valve is connected with a cooling water return system; and the cooling auxiliary line cut-off valve is connected with the cooling water supply and drainage main pipe.
Preferably, the gas phase outlet of the collecting tank is connected with a tail gas recovery system.
Preferably, the outlet of the conveying pump is connected with a device starting line.
Preferably, the pressure monitoring and cooling water feeding cut-off valve and the cooling auxiliary line cut-off valve all enter the central control room DCS system.
Compared with the prior art, the utility model has the beneficial effects that:
1) The protection device for the discharge of the fractionating tower realizes the organized collection of discharged matters through the related process calculation, the selection and the automatic control of equipment, and the residual tail gas enters a tail gas recovery system under the normal working condition, so that the safe discharge is realized, the environmental protection requirement is met, and the safety and environmental protection problems of the discharge of the safety valve of a small chemical enterprise are solved.
2) According to the protection device for the bleeding of the fractionating tower, the cooling backwater check valve is arranged, so that the bleeding condenser is in a non-water state under normal working conditions, the relief pressure is set to be in a monitoring state all the time by the safety valve, and when the pressure of the distilling tower is monitored and increased to be in a monitoring state, an alarm is given, so that a worker can be reminded of the regulation in time.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present utility model;
FIG. 2 is a schematic diagram of a distillation column system according to the present utility model.
In the figure: the device comprises a distillation tower 1, a pressure monitor 2, a safety valve 3, a cooling backwater check valve 4, a discharge condenser 5, a cooling water supply cut-off valve 6, a collecting tank 7, a conveying pump 8 and a cooling auxiliary line cut-off valve 9.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
With reference to fig. 1-2, the present utility model provides a technical solution: the protection device for the discharge of the fractionating tower comprises a distillation tower 1, wherein the distillation tower 1 is connected with a pressure monitor 2; the inlet of the safety valve 3 is connected with the shell side inlet of the bleeder condenser 5; the shell side outlet of the bleeder condenser 5 is connected with a collecting tank 7; the cooling water supply cut-off valve 6 is connected with a tube side inlet of the bleeder condenser 5; the tube side outlet of the bleeder condenser 5 is connected with a cooling backwater check valve 4; the collection tank 7 is connected with the inlet of the delivery pump 8; the inlet of the cooling water supply cut-off valve 6 is connected with a cooling water supply system; the outlet of the cooling water return check valve 4 is connected with a cooling water return system; the cooling auxiliary line cut-off valve 9 is connected with a cooling water supply and drainage main pipe; the gas phase outlet of the collecting tank 7 is connected with a tail gas recovery system; the outlet of the delivery pump 8 is connected with a device start line.
The pressure monitoring 2, the cooling water supply cut-off valve 6 and the cooling auxiliary line cut-off valve 9 all enter the central control room DCS system.
Furthermore, the embodiment realizes the organized collection of the discharged matters through the related process calculation, the selection and the automatic control of the equipment, and the residual tail gas enters a tail gas recovery system under the normal working condition, so that the safe discharge is realized, the environment protection requirement is met, and the safety and environment protection problems of the discharge of the safety valve of a small chemical enterprise are solved; through being provided with cooling return water check valve 4 for the bleeder condenser 5 is anhydrous state under normal operating mode, and relief valve sets for bleeder pressure to 0.18MPa, and pressure control 2 is in the monitored state all the time, and pressure control 2 when distillation column 1 risees to 0.1MPa and reports to the police, is convenient for in time remind the staff to adjust.
In the actual operation process, the cooling water supply cut-off valve 6 is kept closed under normal conditions, the cooling water auxiliary line valve 9 is kept open, the cooling water is guaranteed to be unblocked (antifreezing), the cooling water return check valve 4 is arranged, the relief condenser 5 is in a water-free state under normal working conditions, the relief valve is set to be in a monitoring state, the pressure monitoring 2 is always in a monitoring state, when the pressure monitoring 2 of the distillation tower 1 rises to 0.1MPa for alarming, the cooling auxiliary line cut-off valve 9 is closed in a linkage manner when the pressure of the distillation tower 1 rises to 0.13MPa, meanwhile, the cooling water supply cut-off valve 6 is opened to enable the relief condenser 5 to be filled with cooling water and realize a circulating cooling effect, when the pressure of the cooling water is continuously raised to 0.18MPa, the relief valve is opened, the relief gas enters the collection tank 7 after being condensed by the relief condenser 5, the condensed liquid returns to the tank area after being conveyed by the conveying device through the conveying pump 8, and the uncondensed gas directly enters the tail gas recovery system for processing due to small flow.
After the pressure alarm and the interlocking opening of the cooling water supply cut-off valve 6 and the closing of the cooling auxiliary line cut-off valve 9 are carried out, the pressure is not increased any more, and when the pressure is reduced to below 0.05MPa, the interlocking opening of the cooling water supply cut-off valve 6 and the interlocking opening of the cooling auxiliary line cut-off valve 9 are carried out, so that the distillation column safety relief system returns to a normal state.
Other parts of the present utility model not described in detail are all of the prior art, and are not described in detail herein.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A protection device for the discharge of a fractionating tower, comprising a distillation tower (1), characterized in that: the distillation tower (1) is connected with the pressure monitoring (2);
an inlet of the safety valve (3) is connected with a shell side inlet of the bleeder condenser (5); the shell side outlet of the bleeder condenser (5) is connected with the collecting tank (7); the cooling water supply cut-off valve (6) is connected with a tube side inlet of the discharge condenser (5); and a tube side outlet of the bleeder condenser (5) is connected with a cooling backwater check valve (4).
2. The protection device for fractionator blowdown according to claim 1, wherein: the collecting tank (7) is connected with the inlet of the conveying pump (8).
3. The protection device for fractionator blowdown according to claim 1, wherein: and the inlet of the cooling water supply shutoff valve (6) is connected with a cooling water supply system.
4. The protection device for fractionator blowdown according to claim 1, wherein: the outlet of the cooling water return check valve (4) is connected with a cooling water return system; the cooling auxiliary line cut-off valve (9) is connected with the main water supply and drainage pipe of the cooling water.
5. The protection device for fractionator blowdown according to claim 1, wherein: and a gas phase outlet of the collecting tank (7) is connected with a tail gas recovery system.
6. A protection arrangement for the blowdown of a fractionation column according to claim 2, wherein: and the outlet of the conveying pump (8) is connected with a device start line.
7. The protection device for fractionator blowdown according to claim 1, wherein: the pressure monitoring (2), the cooling water feeding cut-off valve (6) and the cooling auxiliary line cut-off valve (9) all enter the central control room DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597666.0U CN220237799U (en) | 2023-06-21 | 2023-06-21 | Protection device for discharging of fractionating tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321597666.0U CN220237799U (en) | 2023-06-21 | 2023-06-21 | Protection device for discharging of fractionating tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220237799U true CN220237799U (en) | 2023-12-26 |
Family
ID=89264282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321597666.0U Active CN220237799U (en) | 2023-06-21 | 2023-06-21 | Protection device for discharging of fractionating tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220237799U (en) |
-
2023
- 2023-06-21 CN CN202321597666.0U patent/CN220237799U/en active Active
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