CN103893998A - Method and device for separating oil in liquid ammonia - Google Patents
Method and device for separating oil in liquid ammonia Download PDFInfo
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- CN103893998A CN103893998A CN201410144626.XA CN201410144626A CN103893998A CN 103893998 A CN103893998 A CN 103893998A CN 201410144626 A CN201410144626 A CN 201410144626A CN 103893998 A CN103893998 A CN 103893998A
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Abstract
The invention relates to a method and a device for separating oil in liquid ammonia. The device comprises a shell, wherein the shell is internally provided with a set of liquid-liquid coalescing separator. The method comprises the following step of carrying out coalescence-separation on oil-containing liquid ammonia after solid filtration by virtue of the liquid-liquid coalescing separator, and thus separating a liquid ammonia phase and an oil phase. With the adoption of the device, as the liquid-liquid coalescing separator made of a polyolefin material is adopted, the coalescence separation accuracy is high, 0.01-micron drops can be coalesced, the coalescing efficiency reaches 99.99 percent, and the current situation in the prior art that the separation requirements can not be met due to poor separation effect on impurities such as oil and the like in the liquid ammonia is improved; meanwhile, the problems of certain separators with deoiling function that as a coalescing filtration core is easy to be blocked, the deoiling effect is influenced, and the coalescing filtration core needs to be frequently changed, so that the separation cost is high, and the separation effect is poor are solved.
Description
Technical field
The invention belongs to processing and the recovery field of oily impurity in liquefied ammonia, relate to a kind of method of separating oil in liquid ammonia, the liquefied ammonia deoiling method that especially a kind of ammonia processing industry is used in producing, and implement the method device used.
Background technology
In ammonia processing industry is produced, as usually can be with iron rust, water, wet goods impurity in the liquefied ammonia of raw material, in the time that sending into ammonia evaporator and evaporate, this liquefied ammonia can affect evaporation efficiency, and contaminate subsequent material, can cause when serious stopping.In order to make the ammonia processing industry can be efficient, energy-conservation, must carry out purified treatment to liquid ammonia material.In the prior art, what conventionally adopt is a kind of powdered-metal filtering technique, but this technique is poor to the separating effect of wet goods impurity in liquefied ammonia, does not reach separation requirement.In addition, some are taken into account its Coalescence filter core in the separator of oil removing and are easy to stop up, and the related deoiling effect that affects needs often to change Coalescence filter core, causes separation costs higher, inferior separating effect.At present, a kind of method and apparatus that can separating oil in liquid ammonia of exploitation is needed in market badly.
Summary of the invention
The invention provides a kind of method and device of separating oil in liquid ammonia, overcome the multinomial defect that prior art exists.
On the one hand, the invention provides a kind of method of separating oil in liquid ammonia, the method comprises: the oil-containing liquefied ammonia through solid filtering is carried out to the drop that coalescent formation is large; Described drop is carried out to sedimentation separation, obtain liquefied ammonia phase and oil phase.
On the other hand, the invention provides a kind of device of separating oil in liquid ammonia, this device comprises a housing 7, in this housing 7, having fixedly mounted a set of material by two at right angle setting plates 8 is polyolefinic liquid-liquid coalescing separator 9, described housing 7 is divided into admission chamber and sedimentation chamber by this liquid-liquid coalescing separator 9, be provided with a feed tube 1 in the upper end of housing admission chamber, enter admission chamber through the liquefied ammonia that tentatively removes by filter the solid impurities such as metal fragment by this feed tube 1, be provided with light phase liquid drain pipe 5 in the upper end of this housing sedimentation chamber, be provided with heavy phase liquid collecting tank 6 in the lower end of this housing sedimentation chamber and be located at the heavy phase liquid drain pipe of these heavy phase liquid collecting tank 6 lower ends.
The present invention has the following advantages:
1. the coalescing separator that adopts polyolefin material, coalescent viscosity is designed to 0.01pm, and its coalescence efficiency reaches 99. 99%, and in liquefied ammonia after treatment, the content of oil is less than 5ppm.Send into after liquid-liquid coalescing separator when the liquefied ammonia of oil-containing impurity, separation accuracy obviously improves, the choking phenomenon of Coalescence filter core be improved significantly, reduced the replacement frequency of Coalescence filter core, reduced to a great extent separation costs;
2. this coarse separation device is mainly to carry out the separation of liquid-liquid for the liquefied ammonia filtering after solid impurity removal of impurities, take oil removing as main, does not double as removal of impurities, does not need often to change Coalescence filter core, and separation costs is reduced;
3. the present invention can effectively remove wet goods impurity contained in liquefied ammonia, subsequent evaporation efficiency is obviously improved, solved due to the pollution problem of the oil in liquefied ammonia to follow-up raw material simultaneously, extend the equipment uptime, reduce the Parking causing because of oily impurity in liquefied ammonia, there is good environmental benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of apparatus of the present invention.
1-feed tube, 2-differential manometer mouth (1), 3-differential manometer mouth (2), 4-blast pipe, the light phase liquid of 5-drain pipe, 6-heavy phase liquid collecting tank, 7-housing, 8-installing plate, 9-liquid-liquid coalescing separator, 10-discharging hole, 11-discharging hole, 12-bracing frame.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the device of separating oil in liquid ammonia of the present invention comprises: a housing 7, in this housing 7, by two at right angle setting plates 8, a set of liquid-liquid coalescing separator 9 is housed, this liquid-liquid coalescing separator 9 is made up of multiple Coalescence filter cores that are arranged at right angle setting plate, described housing 7 is divided into an admission chamber and a sedimentation chamber by this liquid-liquid coalescing separator 9, be provided with a feed tube 1 in the upper end of these housing 7 admission chambers, the liquefied ammonia through tentatively removing by filter the solid impurities such as metal fragment is introduced admission chamber by this feed tube 1, be provided with light phase liquid drain pipe 5 in the upper end of this housing sedimentation chamber, be provided with heavy phase liquid collecting tank 6 in the lower end of this housing sedimentation chamber and be located at the heavy phase liquid drain pipe of these heavy phase liquid collecting tank 6 lower ends.Fluid discharge is convenient when keeping in repair, is also provided with a blast pipe 4 in the upper end of these housing 7 sedimentation chambers, is provided with a discharging hole 11 in the lower end of this housing admission chamber, is provided with a discharging hole 10 in the lower end of this housing sedimentation chamber.
The method of separating oil in liquid ammonia of the present invention is: enter liquefied ammonia except oil separating device through the liquefied ammonia of solid filtering, liquefied ammonia flows to sedimentation chamber via liquid-liquid coalescing separator 9 from admission chamber, in this course, industrial chemicals liquid passes through Coalescence filter core from inside to outside, wherein 0.01 μ m drop forms larger drop at filter core outer surface gradually by coalescence effect, when droplet coalescence out after, under certain fluid condition, form large as far as possible drop, and flow through Disengagement zone (sedimentation chamber rear) from housing 7 horizontal axis, rely on the density of coalescent drop and the industrial chemicals liquid Disengagement zone that do not coexist to carry out sedimentation separation, coalescent drop (heavy phase) after sedimentation separation flow to oil trap 6, and regularly discharge or by liquid level control and exhaust system automatic-discharging are set by heavy phase liquid drain pipe, liquefied ammonia (light phase) after separating-purifying is discharged from the light phase liquid drain pipe 5 on housing top, enter next operation.
Claims (5)
1. a method for separating oil in liquid ammonia, the method comprises: will carry out carrying out the large drop of coalescent formation by liquid-liquid coalescing separator through the oil-containing liquefied ammonia of solid filtering; Described drop is carried out to sedimentation separation, obtain liquefied ammonia phase and oil phase.
2. the device of a separating oil in liquid ammonia, comprise a housing (7), a set of liquid-liquid coalescing separator (9) is housed in described housing (7), described housing (7) is divided into admission chamber and sedimentation chamber by this liquid-liquid coalescing separator (9), be provided with a feed tube (1) in the upper end of this housing admission chamber, be provided with light phase liquid drain pipe (5) in the upper end of this housing sedimentation chamber, be provided with heavy phase liquid collecting tank (6) in the lower end of this housing sedimentation chamber and be located at the heavy phase liquid drain pipe of this heavy phase liquid collecting tank (6) lower end.
3. the device of separating oil in liquid ammonia as claimed in claim 2, it is characterized in that: described liquid-liquid coalescing separator (9) is made up of multiple Coalescence filter cores, be fixedly mounted in housing (7) by two at right angle setting plates (8), on the installing plate that is arranged on admission chamber one side of described Coalescence filter core one end sealing, the other end is arranged on the installing plate of sedimentation chamber one side, connects with sedimentation chamber.
4. the device of separating oil in liquid ammonia as claimed in claim 2, it is characterized in that: be also provided with a blast pipe (4) in the upper end of housing sedimentation chamber, be provided with a discharging hole (11) in the lower end of this housing admission chamber, be provided with a discharging hole (10) in the lower end of this housing sedimentation chamber.
5. the device of the separating oil in liquid ammonia as described in any one in claim 2-4, is characterized in that: described housing (7) is vertical type or horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144626.XA CN103893998A (en) | 2014-04-11 | 2014-04-11 | Method and device for separating oil in liquid ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144626.XA CN103893998A (en) | 2014-04-11 | 2014-04-11 | Method and device for separating oil in liquid ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103893998A true CN103893998A (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410144626.XA Pending CN103893998A (en) | 2014-04-11 | 2014-04-11 | Method and device for separating oil in liquid ammonia |
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| CN (1) | CN103893998A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1690537A (en) * | 1925-07-22 | 1928-11-06 | Hele-Shaw Henry Selby | Separation of liquids |
| GB1433764A (en) * | 1973-04-05 | 1976-04-28 | Hydronautics | System for separating oil from oil-contaminated water |
| CN2331408Y (en) * | 1998-05-30 | 1999-08-04 | 巴陵石油化工公司鹰山石油化工厂 | Gas and liquid ammonia filter |
| CN201840910U (en) * | 2010-11-11 | 2011-05-25 | 任保增 | Composite type device for separating oil in liquid ammonia |
| CN201871247U (en) * | 2010-09-27 | 2011-06-22 | 北京柯兰富尔过滤技术有限公司 | Liquid ammonia oil separation device |
| CN102240465A (en) * | 2011-04-29 | 2011-11-16 | 湖北净天环保设备有限公司 | Mechanical tar remover |
| CN203852866U (en) * | 2014-04-11 | 2014-10-01 | 天脊煤化工集团股份有限公司 | Device for separating oil from liquid ammonia |
-
2014
- 2014-04-11 CN CN201410144626.XA patent/CN103893998A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1690537A (en) * | 1925-07-22 | 1928-11-06 | Hele-Shaw Henry Selby | Separation of liquids |
| GB1433764A (en) * | 1973-04-05 | 1976-04-28 | Hydronautics | System for separating oil from oil-contaminated water |
| CN2331408Y (en) * | 1998-05-30 | 1999-08-04 | 巴陵石油化工公司鹰山石油化工厂 | Gas and liquid ammonia filter |
| CN201871247U (en) * | 2010-09-27 | 2011-06-22 | 北京柯兰富尔过滤技术有限公司 | Liquid ammonia oil separation device |
| CN201840910U (en) * | 2010-11-11 | 2011-05-25 | 任保增 | Composite type device for separating oil in liquid ammonia |
| CN102240465A (en) * | 2011-04-29 | 2011-11-16 | 湖北净天环保设备有限公司 | Mechanical tar remover |
| CN203852866U (en) * | 2014-04-11 | 2014-10-01 | 天脊煤化工集团股份有限公司 | Device for separating oil from liquid ammonia |
Non-Patent Citations (1)
| Title |
|---|
| 姜肇中: "《玻璃纤维应用技术》", 31 January 2004 * |
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Application publication date: 20140702 |
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| RJ01 | Rejection of invention patent application after publication |