CN104841071A - Method for preventing fire gas-phase propagation in organic esters storage tank area - Google Patents
Method for preventing fire gas-phase propagation in organic esters storage tank area Download PDFInfo
- Publication number
- CN104841071A CN104841071A CN201510289662.XA CN201510289662A CN104841071A CN 104841071 A CN104841071 A CN 104841071A CN 201510289662 A CN201510289662 A CN 201510289662A CN 104841071 A CN104841071 A CN 104841071A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- nitrogen
- gas phase
- gas
- tank
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
Abstract
The invention relates to a method for preventing fire gas-phase propagation in an organic esters storage tank area and mainly aims at solving the problems of relatively high nitrogen consumption and poor security in the prior art. By adopting the method for preventing fire gas-phase propagation in the organic esters storage tank area, tail gas pipelines of at least two storage tanks are connected with a master discharge pipeline; an outlet of the master discharge pipeline is connected with a buffer tank; an oxygen content detection instrument is arranged on a gas-phase area of the storage tanks; a nitrogen replenishing pipeline and a regulation valve are arranged on the gas-phase area; the regulation valve arranged on the nitrogen replenishing pipeline is adjusted according to the detection data of the oxygen content detection instrument; when the volume content of oxygen in the gas phase of the buffer tank is higher than 9.5%, the regulation valve is opened to introduce nitrogen; when the volume content of oxygen in the gas phase of the buffer tank is lower than 9.5%, the regulation valve is shut down to stop introducing nitrogen; the technical scheme of guaranteeing the volume content of oxygen in the gas phase of each storage tank to be smaller than 9.5% well solves the problems and can be applied to preventing fire gas-phase propagation in the organic esters storage tank area.
Description
Technical field
The present invention relates to a kind of method preventing organosilane ester tank area fire gas phase from propagating.
Background technology
Organosilane ester storage tank gas phase is often in blast atmosphere, and in order to prevent organosilane ester storage tank gas phase from exploding, the most effective way is exactly the method adopting gas phase nitrogen protection, supplements nitrogen from storage tank breather valve, and along with storage tank runs, nitrogen ceaselessly fills into and breathes out.This method of operation is for the operation of whole tank field, and nitrogen use amount is huge, and this will cause a large amount of nitrogen wastes.In order to save nitrogen, often adopt the method for operation of storage tank gas phase UNICOM, once breaking out of fire, this certainly will increase the risk of flame propagation, fire spread.
CN201410613961 relates to a kind of method protecting storage tank safety and environmental protection, by adopting a kind of method protecting storage tank safety and environmental protection, the gas that liquid in storage tank self produces is passed through gas main, gas tube enters compressor, gas is stored in surge tank by compressor pressurizes, as a part for positive pressure protection gas, when the gas stored in surge tank does not meet the positive pressure protection of each storage tank, the nitrogen from nitrogen inlet pipeline is used to supplement, when in surge tank, pressure exceedes design pressure, torch or burning is sent by reduce internal heat torch or incinerator pipeline by excessive gas.CN201320356393 relates to a kind of nitrogen pressure control system for chemical drum, disclose a kind of nitrogen pressure control system for chemical drum, described system comprises the minute-pressure type sensor be arranged in storage tank, be arranged on the aeration valve that described storage tank upper end is connected with described storage tank, air bleeding valve, described aeration valve and check valve, filter, relief valve, pressure regulator valve is connected in series, described pressure regulator valve is connected with nitrogen pot, described minute-pressure type sensor according to the pressure in storage tank by signal transmission to PLC, described PLC controls the closure or openness of described aeration valve and air bleeding valve according to received signal.CN201120095334 relates to a kind of nitrogen protection device of atmospheric storage tank; comprise atmospheric storage tank; also comprise nitrogen storage tank and nitrogen sealed tube; atmospheric storage tank top is provided with pressure sensor; this pressure sensor is connected with the first magnetic valve and the second magnetic valve by controller, ensures the basicly stable of nitrogen in atmospheric storage tank.
Above-mentioned patent monitors nitrogen content by pressure sensor, and then control tonifying Qi and the exhaust of nitrogen, and pressure is maintained in the scope of setting.But whether storage tank is in gas phase blast atmosphere in fact only to rely on pressure accurately to ensure, high to the sealing requirements of storage tank itself, leaks, or for there is the storage tank of breather valve, then there is certain potential safety hazard if occur.And only control to a certain extent, decrease nitrogen use level, still need to consume a large amount of pure nitrogen gas.And there is the poor problem of security.
The present invention solves the problems referred to above targetedly.
Summary of the invention
Technical problem to be solved by this invention is the problem that in prior art, nitrogen consumption is comparatively large, security is poor, provides a kind of method preventing organosilane ester tank area fire gas phase from propagating newly.During the method is used for preventing organosilane ester tank area fire gas phase from propagating, there is the advantage that nitrogen consumption is less, security is higher.
For solving the problem, the technical solution used in the present invention is as follows: a kind of method preventing organosilane ester tank area fire gas phase from propagating, exhaust pipe at least two storage tanks is connected with total discharge pipe line, total discharge pipe line outlet is connected with surge tank, at surge tank top, breather valve is set, the vapor phase areas of storage tank arranges oxygen content detector, and pipeline and the control valve of supplementary nitrogen are set in described vapor phase areas, detection data according to oxygen content detector regulate the control valve supplemented on nitrogen pipeline, when gas phase oxygen volume content in surge tank higher than 9.5% time, open described control valve and pass into nitrogen, when gas phase oxygen volume content in surge tank lower than 9.5% time, close described control valve and stop passing into nitrogen, ensure that oxygen volume content in the gas phase of each storage tank is lower than 9.5%, wherein, described storage tank does not arrange breather valve, the exhaust pipe on described each storage tank is provided with spark arrester.
In technique scheme, preferably, the control valve on described supplementary nitrogen pipeline is pneumatic operated valve.
In technique scheme, preferably, described oxygen content detector is connected with control valve by data wire.
In technique scheme, preferably, described organosilane ester is methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethyl hexyl acrylate, methyl methacrylate, butyl methacrylate, ethyl acetate, butyl acetate.
The storage tank exhaust emissions pipeline of tank field couples together by this patent, eventually pass through an outlet uniform effluent, because each storage tank respiratory rate is different, can balance mutually between each storage tank gas phase, use oxygen content detector, fire feature according to organosilane ester, part nitrogen is adopted to mix with air, by accurately controlling gas phase oxygen volume content lower than 9.5%, just can reach the object preventing gas phase from firing, accomplishing essential safety.This, by under the prerequisite of protection storage tank essential safety, greatly reduces the use amount of nitrogen.Meanwhile, each storage tank exhaust pipe installs spark arrester additional, prevents flame transmission, achieve good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for the invention.
1 is surge tank; 2 is breather valve; 3 is control valve; 4 is oxygen content detector; 5 for supplementing nitrogen pipeline; 6 is air intake; 7 is offgas outlet; 8 is data wire; 9 is storage tank; 10 is total discharge pipe line; 11 is storage tank exhaust emissions pipeline; 12 is spark arrester.
Below by embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
Detailed description of the invention
[embodiment 1]
A kind of method avoiding Storage Tanks Combustible Liquid gas phase to fire, for organosilane ester storage tank, described organosilane ester is methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethyl hexyl acrylate, methyl methacrylate, butyl methacrylate, ethyl acetate, butyl acetate etc., device comprises two storage tanks (9), surge tank (1), breather valve (2), oxygen content detector (4), supplements nitrogen pipeline (5), control valve (3), and storage tank (9) top does not arrange breather valve.The gas-phase space of two storage tanks (9) is all connected with total discharge pipe line (10) by exhaust emissions pipeline, total discharge pipe line (10) outlet is connected with surge tank (1) top, breather valve (2) one end at surge tank (1) top is connected with the gas-phase space of surge tank (1), breather valve (2) is provided with air intake (6) and offgas outlet (7), it is characterized in that oxygen content detector (4) is arranged on the gas-phase space of surge tank (1), supplement nitrogen pipeline (5) to be connected with the gas-phase space of surge tank (1), control valve (3) is arranged on supplementary nitrogen pipeline (5), oxygen content detector (4) is connected with control valve (3) by data wire.Exhaust pipe on described each storage tank is provided with spark arrester.
In storage tank (9) running, the breather valve (2) on surge tank (1), according to discharging and feed needs, still normally to suck, air of breathing out.Just oxygen content detector (4) is set in surge tank (1) gas phase, detects the change of gas phase oxygen content; Arrange supplementary nitrogen pipeline (5) at surge tank top, this pipeline installs pneumatic control valve door (3) additional, and this by-pass valve control detects data according to oxygen content in tank and regulates.When gas phase oxygen content in surge tank higher than 9.5% time, automatically open valve and pass into nitrogen, until in surge tank gas phase oxygen volume content lower than 9.5%; When gas phase oxygen volume content lower than 9.5% time, automatic-closing valve stop pass into nitrogen.By above control loop, ensure that the oxygen volume content of surge tank gas phase is lower than 9.5%.When saving nitrogen, prevent organosilane ester storage tank gas phase from firing and fire-propagation.
Adopting method of the present invention, comparing with using nitrogen protection storage tank completely, at least can save the nitrogen of 72.7%, and the safe effect reached is completely the same.If use pressure sensor to carry out the tonifying Qi of Monitoring and Controlling nitrogen compared with the situation of exhaust with other simultaneously, not only can save nitrogen, security also improves greatly.
[embodiment 2]
According to the condition described in embodiment 1, just storage tank quantity is 3, at least can save the nitrogen of 81.8%, and the safe effect reached is completely the same.
[embodiment 3]
According to the condition described in embodiment 1, just storage tank quantity is 4, at least can save the nitrogen of 86.4%, and the safe effect reached is completely the same.
Claims (4)
1. the method preventing organosilane ester tank area fire gas phase from propagating, exhaust pipe at least two storage tanks is connected with total discharge pipe line, total discharge pipe line outlet is connected with surge tank, at surge tank top, breather valve is set, the vapor phase areas of storage tank arranges oxygen content detector, and pipeline and the control valve of supplementary nitrogen are set in described vapor phase areas, detection data according to oxygen content detector regulate the control valve supplemented on nitrogen pipeline, when gas phase oxygen volume content in surge tank higher than 9.5% time, open described control valve and pass into nitrogen; When gas phase oxygen volume content in surge tank lower than 9.5% time, close described control valve and stop passing into nitrogen, ensure that oxygen volume content in the gas phase of each storage tank is lower than 9.5%; Wherein, described storage tank does not arrange breather valve, the exhaust pipe on described each storage tank is provided with spark arrester.
2. the method preventing organosilane ester tank area fire gas phase from propagating according to claim 1, is characterized in that the control valve on described supplementary nitrogen pipeline is pneumatic operated valve.
3. the method preventing organosilane ester tank area fire gas phase from propagating according to claim 1, is characterized in that described oxygen content detector is connected with control valve by data wire.
4. the method preventing organosilane ester tank area fire gas phase from propagating according to claim 1, is characterized in that described organosilane ester is methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethyl hexyl acrylate, methyl methacrylate, butyl methacrylate, ethyl acetate, butyl acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289662.XA CN104841071A (en) | 2015-05-29 | 2015-05-29 | Method for preventing fire gas-phase propagation in organic esters storage tank area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289662.XA CN104841071A (en) | 2015-05-29 | 2015-05-29 | Method for preventing fire gas-phase propagation in organic esters storage tank area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104841071A true CN104841071A (en) | 2015-08-19 |
Family
ID=53841296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289662.XA Pending CN104841071A (en) | 2015-05-29 | 2015-05-29 | Method for preventing fire gas-phase propagation in organic esters storage tank area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104841071A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001030670A1 (en) * | 1999-10-26 | 2001-05-03 | Csx Transportation, Inc. | Method and apparatus for locomotive fuel tank repair |
| CN202048361U (en) * | 2011-04-02 | 2011-11-23 | 南通新邦化工科技有限公司 | Nitrogen protection device of atmospheric storage tank |
| CN203345510U (en) * | 2013-05-27 | 2013-12-18 | 中国人民解放军后勤工程学院 | Nitrogen charging device for oil tank |
| CN203921696U (en) * | 2014-06-03 | 2014-11-05 | 翟占江 | A kind of external floating top tank sealingly secure ensures system |
| CN104370000A (en) * | 2014-11-04 | 2015-02-25 | 中国石油化工股份有限公司 | Safe and environment-friendly method for protecting storage tanks |
| CN104534273A (en) * | 2015-01-06 | 2015-04-22 | 北京石油化工工程有限公司 | Storage and emergency supply device and method for standby instrument gas source |
-
2015
- 2015-05-29 CN CN201510289662.XA patent/CN104841071A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001030670A1 (en) * | 1999-10-26 | 2001-05-03 | Csx Transportation, Inc. | Method and apparatus for locomotive fuel tank repair |
| CN202048361U (en) * | 2011-04-02 | 2011-11-23 | 南通新邦化工科技有限公司 | Nitrogen protection device of atmospheric storage tank |
| CN203345510U (en) * | 2013-05-27 | 2013-12-18 | 中国人民解放军后勤工程学院 | Nitrogen charging device for oil tank |
| CN203921696U (en) * | 2014-06-03 | 2014-11-05 | 翟占江 | A kind of external floating top tank sealingly secure ensures system |
| CN104370000A (en) * | 2014-11-04 | 2015-02-25 | 中国石油化工股份有限公司 | Safe and environment-friendly method for protecting storage tanks |
| CN104534273A (en) * | 2015-01-06 | 2015-04-22 | 北京石油化工工程有限公司 | Storage and emergency supply device and method for standby instrument gas source |
Non-Patent Citations (1)
| Title |
|---|
| 孟庭宇等: "氮封内浮顶石脑油储罐气相空间气体浓度分布特性研究", 《化学工程与装备》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104848033A (en) | Alkane storage tank protection method | |
| CN104891059A (en) | Method for preventing oil product and gas storage tank from mutual combustion and explosion and for reducing emission of volatile matter | |
| CN104843379A (en) | Method for preventing gas-phase blasting of organic alcohol storage tanks and reducing volatile matter discharge | |
| CN104960809A (en) | Oil product storage tank protection method | |
| CN104843375A (en) | Method for preventing gas-phase blasting of organic ester storage tanks and reducing volatile matter discharge | |
| CN204737248U (en) | Avoid combustible liquid storage tank gaseous phase to fire and suppressed and press damaged device | |
| CN104925410A (en) | Method for preventing gas-phase burning explosion of alkane storage tank | |
| CN104841071A (en) | Method for preventing fire gas-phase propagation in organic esters storage tank area | |
| CN104828425A (en) | Method for avoiding gas phase burning explosion of an oil product storage tank | |
| CN104859979A (en) | Method for avoiding gas phase burning explosion of organic ester storage tanks | |
| CN104986470A (en) | Method for preventing gaseous phase propagation of fire in organic acid storage tank region | |
| CN104859978A (en) | Method for avoiding organic ester storage tank gas-phase burning and explosion and built-up pressure breaking | |
| CN204726963U (en) | Prevent the device that combustible liquid storage tank region fire gas phase is propagated | |
| CN104828420A (en) | Organic aldehyde storage tank protecting method | |
| CN104828428A (en) | Method for avoiding gas phase burning explosion of organic aldehyde storage tank | |
| CN204726957U (en) | Storage Tanks Combustible Liquid fender guard | |
| CN104925409A (en) | Method for preventing burning explosion of organic acid storage tanks | |
| CN204979883U (en) | Avoid device that combustible liquid storage tank gaseous phase fired | |
| CN104828427A (en) | Organic ester storage tank protecting method | |
| CN104986465A (en) | Method for preventing gaseous phase explosion of alkane storage tank | |
| CN104891063A (en) | Method for preventing organic acid gas storage tank from mutually burning and exploding and being pressed and damaged | |
| CN104828429A (en) | Method for preventing organic alcohol class storage tank gaseous-phase burning explosion | |
| CN104986469A (en) | Method for preventing gaseous phase explosion of alkane storage tank and damages caused by pressure build-up | |
| CN104828421A (en) | Method for avoiding gas phase burning explosion and pressure-building damage of organic aldehyde storage tanks | |
| CN104828426A (en) | Organic acid storage tank protecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150819 |