CN1339390A - Method for controlling pressure of storage tank - Google Patents
Method for controlling pressure of storage tank Download PDFInfo
- Publication number
- CN1339390A CN1339390A CN 00113637 CN00113637A CN1339390A CN 1339390 A CN1339390 A CN 1339390A CN 00113637 CN00113637 CN 00113637 CN 00113637 A CN00113637 A CN 00113637A CN 1339390 A CN1339390 A CN 1339390A
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- CN
- China
- Prior art keywords
- pressure
- storage tank
- tank
- valves
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The storage tank pressure controlling method features that the gas pipelines in the tops of the storage tanks for the same medium are connected together and set with gas phase balance valves, and the outlet of the storage tanks is set with return flow pipeline and valves to the tops of all storage tanks. While synchronously reducing temperature and pressure, the balance valves are opened; and while discharging material, the valves in the return flow pipeline are opened. The present invention can control the pressure, temperature and liquid level easily, avoid material mixing and overflow, and discharge material smoothly.
Description
The present invention relates to a kind of method of controlling pressure of storage tank.
The pressure vessel group who uses in the present petro chemical industry process, its gaseous pressure is independently sealed by each storage tank, and the equal close cycles of operation such as rewinding, material delivering, cooling, step-down are finished.Like this, pressure, temperature and tank level control are very inconvenient, and each pressure of storage tank, temperature and liquid level are all inconsistent, and accidents such as flushing, tank boil-overs very easily take place, and jeopardize tank battery safety.
The object of the present invention is to provide a kind of method of controlling pressure of storage tank.
The present invention is achieved in that the gas phase pipeline with same medium tank top is coupled to each other, and the gas-liquid equilibrium valve is set, and when the pressure of storage tank rising needs decrease temperature and pressure, with original cooling system tank farm is implemented synchronous decrease temperature and pressure.At last, reflux pipeline and the valve that leads to each tank top is set, improves the stability of tank farm pressure in the outlet of storage tank material delivering flow process.
Good effect of the present invention is, do not increasing the tank farm safety hazard and do not increasing under the prerequisite of gas-phase space, realization is to effective control of tank farm pressure, temperature and liquid level, the manipulation strength of the synchronous decrease temperature and pressure of tank farm only is equivalent to a storage tank, reduce storage tank valve and frequently opened number of times, reduced the idle cost, material consumption and the material loss that cause because of the valve wearing and tearing.Simultaneously can make tank farm pressure when material delivering, not produce big and frequent fluctuation, when storage tank material delivering generation pressure descends significantly, can carry out balance, prevent to send not discharging and possible storage tank to take out flat phenomenon and take place by the tank farm gas phase.Can also reduce cooling system frequent starting number of times, save the energy, improve the fiduciary level of system equipment.
Embodiment 1.
The top gas phase pipeline of four liquid ammonia storage tanks pipeline and the valve with DN80 is coupled to each other.At liquefied ammonia material delivering pump discharge, four DN50 pipelines and valve are set lead to four liquid ammonia storage tank tops.When liquefied ammonia tank battery pressure index is 0.4Mpa (gauge pressure), open original cooling system, the liquid ammonia storage tank group is implemented synchronous decrease temperature and pressure, make pressure reduce to 0.28Mpa.When the liquefied ammonia material delivering, open the reflux pipeline of material delivering storage tank, with the pressure of balance material delivering storage tank.Like this, do not increasing safety hazard and do not increasing under the prerequisite of gas-phase space, realizing effective control and equalization stable material delivering liquid ammonia storage tank pressure.
Claims (1)
1, a kind of method of controlling pressure of storage tank, it is characterized in that: the gas phase pipeline of same each tank top of medium tank farm is coupled to each other, and the gas-liquid equilibrium valve is set, in the outlet of storage tank material delivering flow process reflux pipeline and the valve that leads to each tank top is set, when synchronous decrease temperature and pressure, open tank top gas-liquid equilibrium valve, during material delivering, open the valve on the reflux pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113637 CN1339390A (en) | 2000-08-23 | 2000-08-23 | Method for controlling pressure of storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113637 CN1339390A (en) | 2000-08-23 | 2000-08-23 | Method for controlling pressure of storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1339390A true CN1339390A (en) | 2002-03-13 |
Family
ID=4583403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00113637 Pending CN1339390A (en) | 2000-08-23 | 2000-08-23 | Method for controlling pressure of storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1339390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328132C (en) * | 2002-09-09 | 2007-07-25 | 特拉华资本形成公司 | Pot pressure regulator system |
-
2000
- 2000-08-23 CN CN 00113637 patent/CN1339390A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328132C (en) * | 2002-09-09 | 2007-07-25 | 特拉华资本形成公司 | Pot pressure regulator system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |