CN219313618U - Nitrogen sealing system for storage tank area of pharmaceutical factory - Google Patents
Nitrogen sealing system for storage tank area of pharmaceutical factory Download PDFInfo
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- CN219313618U CN219313618U CN202320348821.9U CN202320348821U CN219313618U CN 219313618 U CN219313618 U CN 219313618U CN 202320348821 U CN202320348821 U CN 202320348821U CN 219313618 U CN219313618 U CN 219313618U
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- liquid
- nitrogen
- seal
- tank
- storage tank
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 75
- 238000007789 sealing Methods 0.000 title abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 135
- 239000007789 gas Substances 0.000 claims abstract description 35
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 13
- 239000010865 sewage Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000002912 waste gas Substances 0.000 description 7
- 239000013589 supplement Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a nitrogen sealing system of a storage tank area of a pharmaceutical factory, which comprises a liquid storage tank, wherein a nitrogen sealing inlet, a liquid sealing outlet and an emergency release manhole are formed in the top of the liquid storage tank, the nitrogen sealing inlet is connected with a nitrogen system through a nitrogen pipeline, a self-operated nitrogen sealing valve is arranged on the nitrogen pipeline, the liquid sealing outlet is respectively connected with a first liquid sealing tank and a second liquid sealing tank through liquid sealing pipelines, liquid inlets of the first liquid sealing tank and the second liquid sealing tank are connected to a harmless solvent supply system through liquid inlet pipes, an exhaust outlet of the first liquid sealing tank is connected to a tail gas collecting system through a tail gas exhaust pipe, an air inlet of the second liquid sealing tank is connected with an air inlet pipeline communicated with the atmosphere, and the liquid storage tank is connected to a gas phase balance pipe interface of a tank car through a gas phase balance pipe. Through the combination mode of gas seal and liquid seal, reasonable control pressure interval reduces exhaust emission, has safe and reliable, maintains convenient, characteristics such as the energy consumption is low.
Description
Technical Field
The utility model relates to the technical field of storage of liquid easy to generate soluble waste gas in the pharmaceutical industry, in particular to a nitrogen sealing system of a storage tank area of a pharmaceutical factory.
Background
The storage tank in the pharmaceutical industry mainly stores inflammable and explosive, combustible and toxic mediums, and has the characteristics of small stock, multiple types and the like. The pollution of the storage medium to the environment can be reduced by means of air sealing or liquid sealing and the like, and the safety of the storage tank is improved. The control and collection of the emission of the soluble waste gas are key directions of the process system design of the storage tank area of the pharmaceutical factory. The common technical methods mainly comprise the modes of heat insulation and preservation of a storage tank, spray cooling in summer, nitrogen protection and the like, however, the conventional technical means have the following defects:
(1) The heat insulation material is easy to damage in long-term sun-drying rain or corrosion environment, and is difficult to maintain;
(2) The spraying mode consumes more cooling water in summer, the consumption of the cooling water is larger, and the energy consumption of operation is increased.
(3) Although the nitrogen protection can effectively control the emission, the expired nitrogen and the waste gas go to the tail gas collecting and treating system together, thereby increasing the operation load of tail gas treatment.
Therefore, the tank farm operation of the pharmaceutical factory is urgent to find a sealing scheme which is safe and reliable, convenient to maintain and low in energy consumption.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a nitrogen sealing system for a storage tank area of a pharmaceutical factory, which reasonably controls a pressure interval in a combined mode of gas sealing and liquid sealing, reduces exhaust emission, ensures the quality of products and the production and operation safety, and improves the economic benefit of enterprises.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pharmaceutical factory storage tank area nitrogen seal system is characterized in that: including the liquid storage tank, nitrogen seal import, liquid seal export and emergency release manhole have been seted up at the top of this liquid storage tank, nitrogen seal import links to each other with nitrogen system through the nitrogen gas pipeline be provided with self-operated nitrogen seal valve on the nitrogen gas pipeline, liquid seal export links to each other with first liquid seal jar and second liquid seal jar respectively through liquid seal pipeline, the inlet of first liquid seal jar and second liquid seal jar is connected to harmless solvent feed system through the feed liquor pipe, the gas vent of first liquid seal jar is connected to tail gas collecting system through the tail gas emission pipe, the air inlet of second liquid seal jar is connected with the communicating admission line of atmosphere, the liquid storage tank is still connected to tank wagon gaseous balance pipe interface through gaseous balance pipe.
Further, the ball valves are respectively connected to the nitrogen pipelines at two sides of the self-operated nitrogen seal valve, and the air pressure gauge is arranged on the nitrogen pipeline between the self-operated nitrogen seal valve and the ball valves.
Further, a limiting orifice plate is arranged on the self-operated nitrogen seal valve in parallel, and stop valves are arranged on two sides of the limiting orifice plate.
Further, the material inlet of liquid storage tank passes through the inlet pipe and links to each other with tank wagon material interface of unloading be provided with ball valve, filter, delivery pump, check valve, ball valve and first pneumatic switch valve on the inlet pipe, the material outlet of liquid storage tank passes through the discharging pipe to the import of filter, the material outlet of liquid storage tank still is connected with the drain, be provided with the blowoff valve on the drain.
Further, the top of the liquid storage tank is also provided with a single calling valve, and the liquid storage tank is provided with a thermometer and a pressure gauge.
Further, a second pneumatic switch valve is arranged on the liquid inlet pipe, and liquid level meters are arranged on the first liquid seal tank and the second liquid seal tank.
The utility model has the remarkable effects that:
1. the pressure interval can be reasonably controlled by combining the gas seal and the liquid seal, the exhaust emission is reduced, and the device has the characteristics of safety, reliability, convenience in maintenance, low energy consumption and the like, can ensure the quality of products and the safety of production and operation, improves the economic benefit of enterprises, can effectively reduce the exhaust emission, and protects the environment;
2. volatile organic compounds in the combustible medium storage tank can be effectively prevented from being contacted with air to form explosive gas, the hazard of accidents is reduced, and the operation safety of the storage tank is improved;
3. the contact between the storage material and oxygen can be effectively isolated, and the generation of polymers and oxides can be prevented;
4. the positive pressure in the tank is kept, so that evaporation loss is reduced;
5. the nitrogen is lighter than the solvent, and the exhalation of volatile organic compounds is effectively reduced when the storage tank breathes, thereby protecting the environment.
Drawings
FIG. 1 is a schematic diagram of a pipeline structure according to the present utility model.
Detailed Description
The following describes the embodiments and working principles of the present utility model in further detail with reference to the drawings.
As shown in fig. 1, a nitrogen sealing system of a storage tank area of a pharmaceutical factory comprises a liquid storage tank 1, wherein a nitrogen sealing inlet, a liquid sealing outlet and an emergency release manhole 2 are formed in the top of the liquid storage tank 1, the nitrogen sealing inlet is connected with a nitrogen system 4 through a nitrogen pipeline 3, a self-operated nitrogen sealing valve 5 is arranged on the nitrogen pipeline 3, the liquid sealing outlet is respectively connected with a first liquid sealing tank 7 and a second liquid sealing tank 8 through a liquid sealing pipeline 6, the liquid inlets of the first liquid sealing tank 7 and the second liquid sealing tank 8 are connected to a harmless solvent supply system 10 through a liquid inlet pipe 9, the gas outlet of the first liquid sealing tank 7 is connected to a tail gas collecting system through a tail gas discharge pipe 11, the gas inlet of the second liquid sealing tank 8 is connected with a gas inlet pipeline 12 communicated with the atmosphere, the liquid storage tank 1 is also connected with a tank car gas phase balance pipe interface through a gas phase balance pipe 13, the top of the liquid storage tank 1 is also provided with a single calling valve 25, and the liquid storage tank 1 is provided with a thermometer 26 and a manometer 27.
In this example, the nitrogen pipelines 3 on both sides of the self-operated nitrogen seal valve 5 are respectively connected with ball valves, and the nitrogen pipeline 3 between the self-operated nitrogen seal valve 5 and the ball valves is provided with a barometer.
Further, a flow limiting orifice plate 14 is arranged on the self-operated nitrogen seal valve 5 in parallel, and stop valves are arranged on two sides of the flow limiting orifice plate 14.
Further, the material inlet of the liquid storage tank 1 is connected with the tank wagon material unloading interface through a feeding pipe 15, a first ball valve 16, a filter 17, a delivery pump 18, a check valve 19, a second ball valve 20 and a first pneumatic switch valve 21 are arranged on the feeding pipe 15, a discharging hole of the second ball valve 20 is connected with each workshop material point through a pipeline, a material outlet of the liquid storage tank 1 is connected to an inlet of the filter 17 through a discharging pipe 22, a material outlet of the liquid storage tank 1 is further connected with a sewage drain pipeline 23, and a sewage drain valve 24 is arranged on the sewage drain pipeline 23.
Preferably, a second pneumatic switch valve 28 is arranged on the liquid inlet pipe 9, and liquid level meters 29 are arranged on the first liquid seal tank 7 and the second liquid seal tank 8.
In this example, the system includes a gas seal part and a liquid seal part, the gas seal part mainly includes a nitrogen system 4, a nitrogen pipeline 3, a self-operated nitrogen seal valve 5, a pressure gauge 27, a single-call valve 25, an emergency release manhole 2, etc., and the liquid seal part includes a first liquid seal tank 7, a second liquid seal tank 8, a liquid level gauge 29 and a harmless solvent supply system 10.
The air seal of the liquid storage tank 1 mainly aims at preventing the storage tank from generating negative pressure and sucking air from the breather valve so as to keep micro-positive pressure in the tank; the normal pressure set value of the self-operated nitrogen seal valve 5 is to avoid the intersection with the set pressure of the liquid seal system and the single-call valve, and unnecessary nitrogen loss and waste are generated. When the gas pressure in the liquid storage tank 1 is lower than the opening pressure of the nitrogen seal valve 5, the nitrogen seal valve 5 is opened to supplement nitrogen into the liquid storage tank 1; when the gas pressure in the liquid storage tank 1 reaches the closing pressure of the nitrogen sealing valve 5, the nitrogen sealing valve 5 is closed to stop filling nitrogen into the liquid storage tank 1.
The liquid seal is mainly used for washing waste gas through the first liquid seal tank 7 and discharging the waste gas to a tail gas collecting system after the system is overpressurized, or supplementing air into the tank body through the second liquid seal tank 8 in time when the gas seal part fails, so that the tank body structure is prevented from being damaged by vacuum.
In order to ensure pressure balance and control exhaust emission, the system pressure control and safety accessory setting pressure for the liquid storage tank 1 with the design pressure of-500 PaG-2000 PaG is as follows:
| sequence number | Name of the name | |
|
| 1 | Design pressure of |
|
|
| 2 | | 1800PaG | |
| 3 | Opening pressure of single calling valve | 1350PaG | |
| 4 | First liquid seal tank 7 height h1 | Calculated to obtain | |
| 5 | Closing pressure of self-operated |
|
|
| 6 | Opening pressure of self-operated |
200PaG | |
| 7 | Atmospheric pressure | 0 | |
| 8 | Height h2 of second |
Calculated to obtain | |
| 9 | The |
-500PaG |
The heights h1, h2 in the table should be calculated in combination with the density of the harmless solvent supply system 10, which can be calculated as 1000kg/m3 when the storage medium is a water-soluble medium, and water is selected as the harmless solvent.
Normal operating mode:
(1) The liquid storage tank 1 operates in the opening and closing pressure range of the self-operated nitrogen seal valve 5, when the gas phase space pressure at the top of the liquid storage tank 1 is smaller than the opening pressure of the self-operated nitrogen seal valve 5, the self-operated nitrogen seal valve 5 is opened to supplement nitrogen, and when the gas phase space pressure at the top of the liquid storage tank 1 reaches the closing pressure of the self-operated nitrogen seal valve 5, the self-operated nitrogen seal valve 5 is closed to stop nitrogen supplementation.
(2) When the pressure of the liquid storage tank 1 is larger than h1, the gas in the liquid storage tank 1 passes through the first liquid seal tank 7 and is discharged and integrated into a factory tail gas collecting system.
Abnormal working conditions:
(1) When the self-operated nitrogen seal valve 5 fails and cannot timely supplement nitrogen, the gas phase space pressure at the top of the liquid storage tank 1 is lower than h2, and the liquid seal part works normally. The second liquid seal tank 8 sucks air and supplements air to the liquid storage tank 1, so that the pressure in the liquid storage tank 1 is ensured not to be lower than the design vacuum.
(2) When the self-operated nitrogen seal valve 5 fails or the exhaust system of the first liquid seal tank 7 fails, and the pressure in the liquid storage tank 1 reaches the exhalation pressure of the single-calling valve, the overpressure exhaust gas is discharged through the single-calling valve.
(3) When the pressure in the liquid storage tank 1 is continuously increased to be uncontrollable due to the faults, the pressure is relieved through the emergency release manhole 2, and the pressure in the liquid storage tank 1 is ensured not to exceed the design pressure of the liquid storage tank 1.
Maintenance working conditions:
(1) When the deviation of the liquid level height in the first liquid seal tank 7 and the second liquid seal tank 8 from the set liquid level is larger than 3mm, the LIAS10101 with the interlocking control function, which is arranged on the liquid level meter, automatically opens the second pneumatic switch valve 28 of the harmless solvent supply system, supplements the liquid level of the liquid seal part to the normal set liquid level, and ensures the stable operation of the liquid seal part.
(2) The liquid concentration in the first liquid seal tank 7 is periodically sampled and detected, and when the liquid concentration in the first liquid seal tank 7 reaches the replacement condition, the solvent is timely replaced, so that the liquid seal part is ensured to have the waste gas absorption capacity.
The embodiment can be used for an atmospheric storage tank system of flammable and explosive, combustible and toxic media, and is particularly suitable for storing the liquid which is easy to generate soluble waste gas, such as hydrochloric acid, ethanol, methanol and the like.
The embodiment can reasonably control the pressure interval through the combination mode of the air seal and the liquid seal, effectively reduces the exhaust emission, has the characteristics of safety, reliability, convenient maintenance, low energy consumption and the like, can ensure the quality of products and the safety of production and operation, improves the economic benefit of enterprises, also can effectively reduce the exhaust emission, and protects the environment.
The technical scheme provided by the utility model is described in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (6)
1. A pharmaceutical factory tank farm nitrogen seal system, characterized in that: including the liquid storage tank, nitrogen seal import, liquid seal export and emergency release manhole have been seted up at the top of this liquid storage tank, nitrogen seal import links to each other with nitrogen system through the nitrogen gas pipeline be provided with self-operated nitrogen seal valve on the nitrogen gas pipeline, liquid seal export links to each other with first liquid seal jar and second liquid seal jar respectively through liquid seal pipeline, the inlet of first liquid seal jar and second liquid seal jar is connected to harmless solvent feed system through the feed liquor pipe, the gas vent of first liquid seal jar is connected to tail gas collecting system through the tail gas emission pipe, the air inlet of second liquid seal jar is connected with the communicating admission line of atmosphere, the liquid storage tank is still connected to tank wagon gaseous balance pipe interface through gaseous balance pipe.
2. The pharmaceutical factory tank farm nitrogen seal system according to claim 1, wherein: ball valves are respectively connected to the nitrogen pipelines at two sides of the self-operated nitrogen seal valve, and a barometer is arranged on the nitrogen pipeline between the self-operated nitrogen seal valve and the ball valves.
3. The pharmaceutical factory tank farm nitrogen seal system according to claim 2, wherein: the self-operated nitrogen seal valve is provided with a flow limiting orifice plate in parallel connection, and stop valves are arranged on two sides of the flow limiting orifice plate.
4. The pharmaceutical factory tank farm nitrogen seal system according to claim 1, wherein: the material inlet of the liquid storage tank is connected with the tank wagon material unloading interface through a feeding pipe, a ball valve, a filter, a delivery pump, a check valve, the ball valve and a first pneumatic switch valve are arranged on the feeding pipe, the material outlet of the liquid storage tank is connected to the inlet of the filter through a discharging pipe, the material outlet of the liquid storage tank is further connected with a sewage pipeline, and the sewage pipeline is provided with a sewage valve.
5. The pharmaceutical factory tank farm nitrogen seal system according to claim 1, wherein: the top of liquid storage tank still is provided with the singly breathe the valve, the liquid storage tank is provided with thermometer and manometer.
6. The pharmaceutical factory tank farm nitrogen seal system according to claim 1, wherein: the liquid inlet pipe is provided with a second pneumatic switch valve, and the first liquid seal tank and the second liquid seal tank are both provided with liquid level meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348821.9U CN219313618U (en) | 2023-03-01 | 2023-03-01 | Nitrogen sealing system for storage tank area of pharmaceutical factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348821.9U CN219313618U (en) | 2023-03-01 | 2023-03-01 | Nitrogen sealing system for storage tank area of pharmaceutical factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219313618U true CN219313618U (en) | 2023-07-07 |
Family
ID=87027235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320348821.9U Active CN219313618U (en) | 2023-03-01 | 2023-03-01 | Nitrogen sealing system for storage tank area of pharmaceutical factory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219313618U (en) |
-
2023
- 2023-03-01 CN CN202320348821.9U patent/CN219313618U/en active Active
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