CN103925700A - Oil-field heating furnace fire tube scaling prevention device - Google Patents
Oil-field heating furnace fire tube scaling prevention device Download PDFInfo
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- CN103925700A CN103925700A CN201410150273.4A CN201410150273A CN103925700A CN 103925700 A CN103925700 A CN 103925700A CN 201410150273 A CN201410150273 A CN 201410150273A CN 103925700 A CN103925700 A CN 103925700A
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- fire tube
- heating furnace
- oil field
- field heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 71
- 230000002265 prevention Effects 0.000 title abstract description 3
- 239000007788 liquid Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 63
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 abstract 4
- 238000013021 overheating Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- -1 note ternary Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Paper (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
An oil-field heating furnace fire tube scaling prevention device comprises a semi-cylindrical fire tube housing, a semi-annular collecting box, a water feeding device and connecting pipelines. The semi-cylindrical fire tube housing covers the upper portion of an oil-field heating furnace fire tube, semi-annular projections are formed at reinforcement rings of the fire tube to form a semi-annular continuous clamping and sleeving space on the upper surface of the fire tube circumferentially and axially; by means of front and rear regions of flushing reinforcing rings of the front and rear diversion plates, flushing of the upper surface of the fire tube is implemented without dead regions; mixed liquid is distributed evenly through the semi-annular collecting box and enters a clamping sleeve through a nozzle; the water feeding device supplies high-pressure flushing mix liquid for a device body. Heat exchange of the fire tube is reinforced, fire tube local overheating is avoided, descaling is performed by flushing, heating efficiency of the heating furnace is improved with fire tube scaling and swelling are prevented effectively, and safe operation of the heating furnace in a long period is guaranteed.
Description
Technical field
The invention belongs to oilfield exploitation field, be specifically related to a kind of device that prevents the fouling of oil field heating furnace fire tube.
Background technology
Direct-type fire barrel heating furnace, be called for short fire cylinder stove, it is widely used firing equipment on oil field, (comprise crude oil, water, solid silt and other impurity in order to the multiphase mixture heating in field produces, hereinafter to be referred as mixed liquor), wherein fire tube is the main heater of heating furnace, and fuel is lighted, burnt by the burner of a side in fire tube inside, manages outer mixed liquor and fire tube outer wall heat convection.This heating furnace has following shortcoming: first, fire tube surface mixed liquor flowing velocity is slower, and heat transmission not in time; Fire tube being subject to is vertically thermoae inhomogeneous, higher near the fire tube wall temperature of burner side.Secondly, because mixed liquor directly contacts fire tube outer wall, silt can be deposited in fire tube upper surface, and calcium, magnesium inorganic salts in mixed liquor also can be heated and separate out, and is gathered in fire tube surface and forms hard scale.In addition, along with going deep into of oil field development degree, after the application of tertiary oil recovery technology, especially oilfield injection, note ternary, composition and the change of properties of oil field mining liquid are larger, and viscosity increases, and very easily forms dirt, has further worsened the working environment of fire tube.In actual production, find, the most serious position of fouling scaling loss occurs in the top of fire tube refractory brick outlet 300～500mm, and dirt thickness can reach 50mm.This is that silt, the organic impurities etc. in mixed liquor is easy to be heated and separates out, and causes fouling because fire tube wall surface temperature is higher herein, further worsen and conduct heat, finally make steel herein avoid bearing all the time high temperature, mechanical strength declines, and easily deforms, bulge.
For overcoming the above problems, patent CN201416415Y proposes " a kind of energy-conservation scale prevention device of oil field heating furnace ", on fire tube surface, integrated sleeve and injector is installed, and avoids fouling by setting up to flow on fire tube surface.But this device is not suitable for the fire tube with outer stiffening ring, and integral structure cannot dismantle, and is difficult to cleaning and maintenance.
Summary of the invention
The problem existing for solving above-mentioned prior art, the invention provides a kind of device that prevents the fouling of oil field heating furnace fire tube, and this device can form and strongly wash away on the fire tube surface with outer stiffening ring, enhanced heat exchange, prevent dirt deposition simultaneously, and can dismantle, can realize periodic cleaning maintenance.
For achieving the above object, the present invention adopts following technical scheme:
A kind of device that prevents the fouling of oil field heating furnace fire tube, comprise the semi-cylindrical fire tube shell 8 that is coated on oil field heating furnace fire tube 4 the first half, described semi-cylindrical fire tube shell 8 forms the semicircle annular chuck space continuously along oil field heating furnace fire tube 4 circumferential and axial with oil field heating furnace fire tube 4 upper surfaces, inlet side in the continuous chuck of semicircle annular space arranges semicircle annular header 3, and along the multiple nozzles 5 of semicircle annular header 3 circumferential arrangement, spraying in semi-cylindrical fire tube shell 8 of nozzle 5, described semicircle annular header 3 with carry out liquid pipeline and be connected, fire tube stiffening ring 10 places that are positioned at oil field heating furnace fire tube 4 at described semi-cylindrical fire tube shell 8 form semicircle annular protrusion 11, and at semicircle annular protrusion 11 two ends to semi-cylindrical fire tube shell 8 inner sides, the front and back of fire tube stiffening ring 10 arrange respectively front flow guiding plate 15 and rear deflector 16.
Described semi-cylindrical fire tube shell 8 is fixing by bolt 13 with the band steel that is welded on oil field heating furnace fire tube 4 surfaces at mixed liquor inlet side and oil field heating furnace fire tube 4 both sides, and is sealed.
Adopt two kinds of modes that hydraulic oil water mixed liquid is provided, one is that water pump 6 is placed in outside oil field heating furnace 1, extracts the interior low pressure mixed liquor of oil field heating furnace 1, forms hydraulic oil water mixed liquid and enter semicircle annular header 3 after water pump 6 pressurizations; Another kind is that jet pump 7 is placed in oil field heating furnace 1 inside, be immersed in the mixed liquor in oil field heating furnace 1, the hydraulic oil water mixed liquid that enters oil field heating furnace 1 from imported valve 9 enters jet pump 7, draws after the low pressure liquid mixing in oil field heating furnace 1, enters semicircle annular header 3.
Described front flow guiding plate 15 and rear deflector 16, according to stiffening ring 10 front and back mobility status, are got different length c and setting angle α.
Described front flow guiding plate 15 and rear deflector 16 are welded in semi-cylindrical fire tube shell 8.
The present invention compared with prior art, has the following advantages:
(1) the present invention is suitable for the oil field heating furnace fire tube with outer stiffening ring, effective anti-fire-stopping pipe fouling, bulge, the trouble free service cycle of Yanchang Oilfield heating furnace.
(2) the present invention, by the forward and backward mounting guiding board of fire tube stiffening ring, effectively washes away region, fire tube stiffening ring front and back, avoids Impurity deposition and fouling.
(3) length of the forward and backward deflector of fire tube stiffening ring of the present invention and setting angle, according to mobility status calculative determination, can guarantee that fire tube stiffening ring front and back are without washing away dead band.
(4) the present invention is arranged on oil field heating furnace fire tube surface, detachable after installing, can periodic cleaning, maintenance, ensure the long-term safety work of oil field heating furnace.
(5) the present invention adopts different waterworks according to oil field heating furnace real work situation, ensures, to effectively the washing away of oil field heating furnace fire tube, to avoid subcooled boiling assurance device work reliable and stable.
Brief description of the drawings:
Fig. 1 is a kind of device schematic diagram that prevents the fouling of oil field heating furnace fire tube of the present invention.
Fig. 2 is that one of the present invention prevents oil field heating furnace fire tube fouling device inlet side partial sectional view.
Fig. 3 is a kind of device fire tube stiffening ring place cutaway view that prevents the fouling of oil field heating furnace fire tube of the present invention.
Fig. 4 is a kind of device overall schematic that prevents the fouling of oil field heating furnace fire tube of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1,1 is oil field heating furnace, and 4 is oil field heating furnace fire tube, and its surface uniform is distributed with fire tube stiffening ring 10, plays and stablizes fire tube structure effect.Semi-cylindrical fire tube shell 8 is coated on oil field heating furnace fire tube 4 the first half, at fire tube stiffening ring 10 places, semi-cylindrical fire tube shell 8 forms semicircle annular protrusion 11, form the semicircle annular chuck space (hereinafter to be referred as chuck space) continuously along oil field heating furnace fire tube 4 circumferential and axial with oil field heating furnace fire tube 4 upper surfaces, ensure that the mixed liquor (hereinafter to be referred as washing away liquid) washing away can wash away to opposite side smoothly from fire tube shell one side.
Due to oil field heating furnace import, to mix liquid measure less, directly introduce semicircle annular header and can not form effectively and wash away, though or can form and wash away, flow velocity is not more than the minimum flow velocity that subcooled boiling occurs.Therefore, need to adopt waterworks in conjunction with the real work situation of oil field heating furnace, for washing away of chuck provides enough mixed liquor flows, wash away (effectively washing away in chuck space to form effectively, refer to that mixed liquor flow velocity must be greater than the minimum flow velocity that subcooled boiling does not occur on heating furnace surface), ensure, in chuck, subcooled boiling does not occur.
Jet pump is a kind of pump that utilizes high-pressure fluid jet-action to carry fluid, and when work, high-pressure fluid with ejection at a high speed, produces negative pressure through nozzle in mixing chamber, and low-pressure fluid is sucked, and enters enlarged tube after mixing, improves pressure and discharges.
For ensure to form and effectively wash away in chuck space, must provide the sufficient flow quantity that washes away.Consider the real work situation of oil field heating furnace, can adopt the different liquid schemes of washing away.
The import mixed liquor of oil field heating furnace 1 enters oil field heating furnace 1 through imported valve 9, when this import flow quantity is large and keep consecutive hours, this import liquid can be caused to jet pump 7, jet pump 7 is by the interior mixed liquor submergence of oil field heating furnace 1, import liquid sprays through jet pump 7, and in part stove, low pressure liquid is inhaled into jet pump 7, after mixing, introduces semicircle annular header 3, spray into chuck space through nozzle 5, wash away.
When import liquid measure is still not enough while forming enough flows after jet pump sprays, need to adopt water pump 6 to be placed in outside oil field heating furnace 1, extract the mixed liquor in oil field heating furnace 1, enter by the road the interior semicircle annular header 3 of oil field heating furnace 1.
As shown in Figure 2, wash away liquid and enter semicircle annular header 3 through suction flange 12, form jet through nozzle 5 again and enter chuck space, semicircle annular header 3 and nozzle 5 are welded on fire tube surface and form integral structure, and are connected with semi-cylindrical fire tube shell 8 with bolt 13.
As shown in Figure 3, in the time that mixed liquor is flowed through fire tube stiffening ring 10 position, front flow guiding plate 15 and rear deflector 16 can guide fluid scouring fire tube stiffening ring 10 and the square region 14 that fire tube upper surface forms, and avoid dirt to separate out in this deposition.
In mixed liquor inlet side and fire tube both sides, semi-cylindrical fire tube shell 8 is fixing by bolt 13 with the band steel that is welded on oil field heating furnace fire tube 4 surfaces, and is sealed, and in the time of the cleaning of chuck space requirement and maintenance, can conveniently semi-cylindrical fire tube shell 8 be pulled down.
As shown in Figure 4, prevent the device overall schematic of oil field heating furnace fire tube fouling for the present invention is a kind of, from figure, can clearerly find out structure of the present invention.
Mixed liquor is along the high-temperature flue gas flow direction whole chuck space of flowing through from front to back, and fire tube upper surface is washed away in uniform distribution, strengthens fire tube surface heat exchanging on the one hand, takes away heat, reduces fire tube wall temperature, reduces impurity in mixed liquor and separates out at the high temperature on fire tube surface; Working fluid flow speed is washed away fire tube faster simultaneously, plays scale removal effect.Thereby fouling and the scaling loss on fire tube surface are avoided.
Claims (5)
1. one kind prevents the device of oil field heating furnace fire tube fouling, it is characterized in that: comprise the semi-cylindrical fire tube shell (8) that is coated on oil field heating furnace fire tube (4) the first half, described semi-cylindrical fire tube shell (8) forms the semicircle annular chuck space continuously along oil field heating furnace fire tube (4) circumferential and axial with oil field heating furnace fire tube (4) upper surface, inlet side in the continuous chuck of semicircle annular space arranges semicircle annular header (3), and along the multiple nozzles of semicircle annular header (3) circumferential arrangement (5), spraying in semi-cylindrical fire tube shell (8) of nozzle (5), described semicircle annular header (3) with carry out liquid pipeline and be connected, the fire tube stiffening ring (10) that is positioned at oil field heating furnace fire tube (4) at described semi-cylindrical fire tube shell (8) locates to form semicircle annular protrusion (11), and at semicircle annular protrusion (11) two ends to semi-cylindrical fire tube shell (8) inner side, the front and back of fire tube stiffening ring (10) arrange respectively front flow guiding plate (15) and rear deflector (16).
2. a kind of device that prevents the fouling of oil field heating furnace fire tube according to claim 1, it is characterized in that: described semi-cylindrical fire tube shell (8) is fixing by bolt (13) with the band steel that is welded on oil field heating furnace fire tube (4) surface at mixed liquor inlet side and oil field heating furnace fire tube (4) both sides, and is sealed.
3. a kind of device that prevents the fouling of oil field heating furnace fire tube according to claim 1, it is characterized in that: adopt two kinds of modes that hydraulic oil water mixed liquid is provided, one is that water pump (6) is placed in outside oil field heating furnace (1), extract the interior low pressure mixed liquor of oil field heating furnace (1), after water pump (6) pressurization, form hydraulic oil water mixed liquid and enter semicircle annular header (3); Another kind is that jet pump (7) is placed in oil field heating furnace (1) inside, be immersed in the mixed liquor in oil field heating furnace (1), the hydraulic oil water mixed liquid that enters oil field heating furnace (1) from imported valve (9) enters jet pump (7), draw after the low pressure liquid mixing in oil field heating furnace (1), enter semicircle annular header (3).
4. a kind of device that prevents the fouling of oil field heating furnace fire tube according to claim 1, is characterized in that: described front flow guiding plate (15) and rear deflector (16), according to mobility status before and after stiffening ring (10), are got different length c and setting angle α.
5. a kind of device that prevents the fouling of oil field heating furnace fire tube according to claim 1, is characterized in that: described front flow guiding plate (15) and rear deflector (16) are welded in semi-cylindrical fire tube shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150273.4A CN103925700B (en) | 2014-04-15 | 2014-04-15 | A kind of device preventing oil field heating furnace fire tube fouling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150273.4A CN103925700B (en) | 2014-04-15 | 2014-04-15 | A kind of device preventing oil field heating furnace fire tube fouling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925700A true CN103925700A (en) | 2014-07-16 |
| CN103925700B CN103925700B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410150273.4A Expired - Fee Related CN103925700B (en) | 2014-04-15 | 2014-04-15 | A kind of device preventing oil field heating furnace fire tube fouling |
Country Status (1)
| Country | Link |
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| CN (1) | CN103925700B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091800A (en) * | 2016-06-10 | 2016-11-09 | 东北石油大学 | Oil field Four in one furnace fire tube automatic descaling apparatus |
| CN106123345A (en) * | 2016-07-19 | 2016-11-16 | 哈尔滨工业大学 | A kind of two-in-one oil field heating furnace with high pressure scaler system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682841A (en) * | 1996-01-16 | 1997-11-04 | Schimmeyer; Werner K. | Variable flow volume control baffle and vent damper |
| EP1672278A1 (en) * | 2004-12-01 | 2006-06-21 | Alpiterm d.o.o. | Condensing heating apparatus |
| CN201416415Y (en) * | 2009-06-09 | 2010-03-03 | 大庆市格林科技有限公司 | Energy-saving and scale preventing device for oil field heating furnace |
| CN202562038U (en) * | 2012-04-26 | 2012-11-28 | 大庆开发区东油新技术有限公司 | Multifunctional anti-scale, burning-loss-proof, energy-saving and safe device for oilfield fire drum type heating furnace |
| CN204006685U (en) * | 2014-04-15 | 2014-12-10 | 西安交通大学 | A kind of structure that prevents the fouling of oil field heating furnace fire tube |
-
2014
- 2014-04-15 CN CN201410150273.4A patent/CN103925700B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682841A (en) * | 1996-01-16 | 1997-11-04 | Schimmeyer; Werner K. | Variable flow volume control baffle and vent damper |
| EP1672278A1 (en) * | 2004-12-01 | 2006-06-21 | Alpiterm d.o.o. | Condensing heating apparatus |
| CN201416415Y (en) * | 2009-06-09 | 2010-03-03 | 大庆市格林科技有限公司 | Energy-saving and scale preventing device for oil field heating furnace |
| CN202562038U (en) * | 2012-04-26 | 2012-11-28 | 大庆开发区东油新技术有限公司 | Multifunctional anti-scale, burning-loss-proof, energy-saving and safe device for oilfield fire drum type heating furnace |
| CN204006685U (en) * | 2014-04-15 | 2014-12-10 | 西安交通大学 | A kind of structure that prevents the fouling of oil field heating furnace fire tube |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091800A (en) * | 2016-06-10 | 2016-11-09 | 东北石油大学 | Oil field Four in one furnace fire tube automatic descaling apparatus |
| CN106091800B (en) * | 2016-06-10 | 2018-02-23 | 东北石油大学 | Oil field fire tube automatic descaling apparatus |
| CN106123345A (en) * | 2016-07-19 | 2016-11-16 | 哈尔滨工业大学 | A kind of two-in-one oil field heating furnace with high pressure scaler system |
| CN106123345B (en) * | 2016-07-19 | 2018-12-07 | 哈尔滨工业大学 | A kind of two-in-one oil field heating furnace with high pressure scaler system |
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| Publication number | Publication date |
|---|---|
| CN103925700B (en) | 2016-06-29 |
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Granted publication date: 20160629 |