CN104843381A - Method for preventing gas-phase blasting of organic acid storage tank - Google Patents
Method for preventing gas-phase blasting of organic acid storage tank Download PDFInfo
- Publication number
- CN104843381A CN104843381A CN201510289279.4A CN201510289279A CN104843381A CN 104843381 A CN104843381 A CN 104843381A CN 201510289279 A CN201510289279 A CN 201510289279A CN 104843381 A CN104843381 A CN 104843381A
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- China
- Prior art keywords
- storage tank
- nitrogen
- organic acid
- gas phase
- phase
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
Abstract
The invention relates to a method for preventing gas-phase blasting of an organic acid storage tank, mainly solving the problem of high nitrogen consumption in the prior art. According to the method for preventing gas-phase blasting of the organic acid storage tank, a breather valve sucks and exhausts air normally during operation of the storage tank, an oxygen content detector, a nitrogen supplement pipeline and a regulating valve are arranged on a gas-phase area of the storage tank, and the regulating valve on the nitrogen supplement pipeline is regulated according to detection data of the oxygen content detector; when gas-phase oxygen volume content in the storage tank is higher than 5.1%, the regulating valve is opened to supply nitrogen; when the gas-phase oxygen volume content in the storage tank is lower than 5.1%, the regulating valve is closed to stop supplying the nitrogen to guarantee that the gas-phase oxygen volume content of the storage tank is lower than 5.1%. The method solves the problem well and can be applied to gas-phase blasting prevention of the organic acid storage tank.
Description
Technical field
The present invention relates to a kind of method preventing organic acid storage tank gas phase from firing.
Background technology
Organic acid storage tank gas phase is often in blast atmosphere; explode to prevent organic acid storage tank gas phase; at present the most conventional most actv. way is exactly the method adopting gas phase nitrogen protection; constantly nitrogen is supplemented from storage tank breathing valve; along with the operation of storage tank; nitrogen ceaselessly fills into and breathes out, and makes gas phase in tank keep anaerobic state.Adopt this kind of method comparatively large to the demand of nitrogen, the enterprise operating cost not plentiful to nitrogen is higher, by investigation, and the cost about 1 yuan of 1 cubic meter nitrogen in refinery.Therefore conventional approach will cause a large amount of nitrogen wastes at present, increase enterprise operation cost.
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, appendix enters compressor, gas is stored in expansion tank by compressor pressurizes, as a part for positive pressure protection gas, when the gas stored in expansion tank does not meet the positive pressure protection of each storage tank, the nitrogen from nitrogen inlet pipeline is used to supplement, when expansion tank internal 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 gulp valve that described storage tank upper end is connected with described storage tank, blow off valve, described gulp valve and check valve, filter, blowdown valve, pressure regulating valve is connected in series, described pressure regulating valve is connected with nitrogen pot, described minute-pressure type sensor according to the pressure in storage tank by signal transmission to PLC, the closure or openness of described PLC gulp valve and blow off valve according to received signal control.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 electromagnetic valve and the second electromagnetic 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 breathing 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.
The present invention solves this problem targetedly.
Summary of the invention
Technical matters to be solved by this invention is the problem that in prior art, nitrogen consumption is larger, provides a kind of method preventing organic acid storage tank gas phase from firing newly.During the method is used for preventing organic acid storage tank gas phase from firing, there is the advantage that nitrogen consumption is less.
For solving the problem, the technical solution used in the present invention is as follows: a kind of method preventing organic acid storage tank gas phase from firing, in storage tank operational process, breathing valve still normally sucks exhalation air, the vapor phase areas of storage tank arranges oxygen content detector, and the pipeline of supplementary nitrogen is set in described vapor phase areas and regulates the valves, regulate according to the detection data of oxygen content detector and supplement regulating the valves on nitrogen pipeline, when gas phase oxygen volume content in storage tank higher than 5.1% time, regulate the valves described in opening and pass into nitrogen; When gas phase oxygen volume content in storage tank lower than 5.1% time, the stopping that regulating the valves described in closedown passes into nitrogen, ensure storage tank gas phase in oxygen volume content lower than 5.1%.
In technique scheme, preferably, regulating the valves as pneumatic valve on described supplementary nitrogen pipeline.
In technique scheme, preferably, described oxygen content detector is connected with regulating the valves by data line.
In technique scheme, preferably, described organic acid is formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, isooctyl acid.
This patent uses oxygen content detector, fires feature according to organic acid, adopts part nitrogen to mix with air, by accurately controlling gas phase oxygen volume content lower than 5.1%, 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, achieves good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for the invention.
1 is organic acid storage tank; 2 is breathing valve; 3 for regulating the valves; 4 is oxygen content detector; 5 is nitrogen; 6 is air; 7 is tail gas; 8 is data line.
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]
In formic acid storage tank operational process, breathing valve, according to discharging and feed needs, still normally to suck, air of breathing out.Just oxygen content detector is set in storage tank gas phase, detects the change of gas phase oxygen content; Arrange the pipeline of supplementary nitrogen in tank top, this pipeline installs pneumatic adjusting valve door additional, and this by-pass valve control detects data according to oxygen content in tank and regulates.When gas phase oxygen content in tank higher than 5.1% time, automatically open valve and pass into nitrogen, until in tank gas phase oxygen volume content lower than 5.1%; When gas phase oxygen volume content lower than 5.1% time, automatic-closing valve stop pass into nitrogen.By above control loop, ensure that the oxygen volume content of storage tank gas phase is lower than 5.1%.When saving nitrogen, prevent organic acid storage tank gas phase from firing.
Adopting method of the present invention, comparing with using nitrogen protection storage tank completely, at least can save the nitrogen of 24.3%, 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, safety also improves greatly.
Claims (4)
1. the method preventing organic acid storage tank gas phase from firing, in storage tank operational process, breathing valve still normally sucks exhalation air, the vapor phase areas of storage tank arranges oxygen content detector, and the pipeline of supplementary nitrogen is set in described vapor phase areas and regulates the valves, regulate according to the detection data of oxygen content detector and supplement regulating the valves on nitrogen pipeline, when gas phase oxygen volume content in storage tank higher than 5.1% time, regulate the valves described in opening and pass into nitrogen; When gas phase oxygen volume content in storage tank lower than 5.1% time, the stopping that regulating the valves described in closedown passes into nitrogen, ensure storage tank gas phase in oxygen volume content lower than 5.1%.
2. the method preventing organic acid storage tank gas phase from firing according to claim 1, is characterized in that regulating the valves as pneumatic valve on described supplementary nitrogen pipeline.
3. the method preventing organic acid storage tank gas phase from firing according to claim 1, is characterized in that described oxygen content detector is connected with regulating the valves by data line.
4. the method preventing organic acid storage tank gas phase from firing according to claim 1, is characterized in that described organic acid is formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, isooctyl acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289279.4A CN104843381A (en) | 2015-05-29 | 2015-05-29 | Method for preventing gas-phase blasting of organic acid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510289279.4A CN104843381A (en) | 2015-05-29 | 2015-05-29 | Method for preventing gas-phase blasting of organic acid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104843381A true CN104843381A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510289279.4A Pending CN104843381A (en) | 2015-05-29 | 2015-05-29 | Method for preventing gas-phase blasting of organic acid storage tank |
Country Status (1)
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| CN (1) | CN104843381A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2388651C (en) * | 1999-10-26 | 2008-10-07 | Csx Transportation, Inc. | Method and apparatus for locomotive fuel tank repair |
| CN101767697A (en) * | 2009-12-31 | 2010-07-07 | 杜扬 | Intrinsically safe inerting protection method and device for oil storage tank |
| CN101890418A (en) * | 2009-12-30 | 2010-11-24 | 杜扬 | Intrinsically safe method for exhausting oil gas of oil storage tank |
| CN201660248U (en) * | 2009-12-30 | 2010-12-01 | 四川威特龙消防设备有限公司 | Intrinsic safety inerting protection device for oil reservoir |
| CN201659126U (en) * | 2009-12-30 | 2010-12-01 | 四川威特龙消防设备有限公司 | Oil gas removing device for intrinsically-safe oil storage tank |
| 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 |
| CN104495125A (en) * | 2014-12-24 | 2015-04-08 | 四川威特龙消防设备有限公司 | Oil product storage tank safety protection device and protection method |
-
2015
- 2015-05-29 CN CN201510289279.4A patent/CN104843381A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2388651C (en) * | 1999-10-26 | 2008-10-07 | Csx Transportation, Inc. | Method and apparatus for locomotive fuel tank repair |
| CN101890418A (en) * | 2009-12-30 | 2010-11-24 | 杜扬 | Intrinsically safe method for exhausting oil gas of oil storage tank |
| CN201660248U (en) * | 2009-12-30 | 2010-12-01 | 四川威特龙消防设备有限公司 | Intrinsic safety inerting protection device for oil reservoir |
| CN201659126U (en) * | 2009-12-30 | 2010-12-01 | 四川威特龙消防设备有限公司 | Oil gas removing device for intrinsically-safe oil storage tank |
| CN101767697A (en) * | 2009-12-31 | 2010-07-07 | 杜扬 | Intrinsically safe inerting protection method and device for oil storage tank |
| 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 |
| CN104495125A (en) * | 2014-12-24 | 2015-04-08 | 四川威特龙消防设备有限公司 | Oil product storage tank safety protection device and protection method |
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》 * |
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| 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 |