CN100559074C - Supercritical pressure steam pouring furnace - Google Patents
Supercritical pressure steam pouring furnace Download PDFInfo
- Publication number
- CN100559074C CN100559074C CNB2007101633317A CN200710163331A CN100559074C CN 100559074 C CN100559074 C CN 100559074C CN B2007101633317 A CNB2007101633317 A CN B2007101633317A CN 200710163331 A CN200710163331 A CN 200710163331A CN 100559074 C CN100559074 C CN 100559074C
- Authority
- CN
- China
- Prior art keywords
- bank
- communicated
- outlet
- inlet
- heat exchanger
- 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.)
- Active
Links
Images
Landscapes
- Combustion Of Fluid Fuel (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
A kind of supercritical pressure steam pouring furnace, has burner, burner hearth, flue, feed pipe, be furnished with first in the burner hearth, second radiation tube bank, be furnished with first in the flue, second convection bank, feed pipe is communicated with the shell side inlet of heat exchanger, the shell side outlet of heat exchanger is communicated with the inlet of first convection bank through a pipeline, the outlet of first convection bank is communicated with the inlet of first radiation tube bank through No. two pipelines, the outlet of first radiation tube bank is communicated with the tube side inlet of heat exchanger through No. three pipelines, the tube side outlet of heat exchanger is communicated with the inlet of second radiation tube bank through No. four pipelines, the outlet of second radiation tube bank is communicated with the inlet of second convection bank through No. five pipelines, and the outlet of second convection bank is communicated with steam discharge pipe; The present invention moves on to convection section with the tube bank of steam final stage heating from radiant section, has avoided heat transfer deterioration, and steam pressure can reach 26MPa, has solved high pressure and deep well block, the difficult problem of super heavy oil block exploitation.
Description
Technical field
The present invention relates to the special equipment of petroleum industry heating exploitation deep-well viscous crude, particularly injection boiler.
Background technology
Injection boiler is the nucleus equipment of oil-field thick-oil exploitation, and it is to utilize the high steam that is produced to inject oil well, and the crude oil in the heating oil reservoir increases the flowability of viscous crude to reduce the viscosity of viscous crude, thereby improves the recovery ratio of deep-well viscous crude.
The structure of existing injection boiler is as shown in Figure 1: it mainly is made up of burner 1, burner hearth 2, flue 3, and burner hearth 2, flue 3 are communicated with by connecting tube 4, and burner hearth 2 is heat radiation sections of boiler, and flue 3 is thermal convection current sections of boiler.Be furnished with radiation tube bank 5 in the burner hearth 2, be furnished with convection bank 6 in the flue 3, the disposed outside of boiler has heat exchanger 7, heat exchanger 7 is the inner sleeve type water-water heat exchanger, form by shell and inner sleeve, shell is provided with shell side inlet and shell side outlet, and the two ends of inner sleeve are provided with tube side inlet and tube side outlet, and the steam flow process of existing boiler is as follows:
After demineralized water from water treatment facilities boosts by water pump 15, enter the shell side inlet 700 of heat exchanger 7 through feed pipe 10, after the preheating, by shell side outlet 701 outputs, enter the inlet 601 of convection bank 6 through water pipe 11, after having absorbed the heat in the flue, thermal source as heat exchanger is exported by the outlet 602 of convection bank 6, enter the tube side inlet 702 of heat exchanger 7 through water pipe 12, cooled warm water enters the inlet 503 of radiation tube bank 5 from 7 tube side outlet, 703 outputs of heat exchanger through water pipe 13, absorbs heat and vaporize and become steam burner hearth 2 in, steam is delivered to oil well from outlet 504 outputs of radiation tube bank 5 through steam discharge pipe 14.Valve 8 is housed on the feed pipe 10, valve 9 is housed on the steam discharge pipe 14.
In steam generator system, usually specific heat capacity is called greatly than the hot-zone greater than 8.4kJ/kg. ℃ zone, the radiant section of boiler is exactly greatly than the position of hot-zone, and the heat exchange characteristic than the hot-zone is greatly:
(a) less in thermic load, when the mass velocity of working medium is big, very big near near the coefficient of heat transfer of the working medium high specific hot-zone;
(b) higher in thermic load, the mass velocity of working medium hour, the coefficient of heat transfer than working medium in the hot-zone reduces suddenly greatly, wall temperature is ascended to heaven.
The boiler of said structure, the systematic comparison of steam pipeline is simple, the radiation tube bank is the single tube bundle, the elementary heating of steam and final stage heating are all finished by the radiation tube bank, and the radiation tube bank is positioned at burner hearth, directly is subjected to the baking of burner flame, thermic load is higher, the flow velocity of working medium is less again, the heat transfer deterioration phenomenon can occur, causes the temperature of working medium further to promote.So, the steam pressure that existing boiler produces can only reach precritical 21MPa, can't reach supercritical pressure, can not satisfy the needs of thickened oil recovery to the development of darker field, all there is the super dark viscous crude of suitable reserves at present a lot of oil fields, the steam of conventional subcritical pressure boiler is annotated not enter, and this part reserves can't develop always effectively.
Summary of the invention
For addressing the above problem, main purpose of the present invention is to provide a kind of supercritical pressure steam pouring furnace, changed the steam pipe-line layout of existing subcritical pressure boiler, the tube bank of steam final stage heating is moved on to the less relatively convection section of thermic load from radiant section, avoided heat transfer deterioration, thereby make its pressure reach 26MPa, solved high pressure and deep well block, the difficult problem of super heavy oil block exploitation.
For achieving the above object, the present invention is by the following technical solutions:
A kind of supercritical pressure steam pouring furnace has burner, burner hearth, flue, feed pipe, is communicated with by connecting tube between burner hearth and the flue, and the disposed outside of boiler has heat exchanger;
It is characterized in that: be furnished with first in the burner hearth, second radiation tube bank, be furnished with first in the flue, second convection bank, described feed pipe is communicated with the shell side inlet of heat exchanger, the shell side outlet of heat exchanger is communicated with the inlet of first convection bank through a pipeline, the outlet of first convection bank is communicated with the inlet of first radiation tube bank through No. two pipelines, the outlet of first radiation tube bank is communicated with the tube side inlet of heat exchanger through No. three pipelines, the tube side outlet of heat exchanger is communicated with the inlet of second radiation tube bank through No. four pipelines, the outlet of second radiation tube bank is communicated with the inlet of second convection bank through No. five pipelines, and the outlet of second convection bank is communicated with steam discharge pipe.
Described first convection bank is arranged in the flue outlet end, and second convection bank is arranged in the flue entrance end.
Described first, second radiation tube bank all is back and forth to be arranged by the riffled tube level to constitute.
Described second convection bank is back and forth arranged by the riffled tube level and is constituted.
The present invention has following positive beneficial effect:
At the design defect of existing pressure boiler, the present invention has carried out three improvement to the structure of boiler:
The one, the tube bank that the steam final stage is heated moves on to convection section from radiant section, and be arranged in the entrance area of flue, this part regional temperature is higher, near burner hearth, promptly, can guarantee quality of steam near the high specific hot-zone, and far away from the furnace flame central area, heat transfer deterioration can not take place far below radiant section in maximum heating load.
The 2nd, the radiation tube bank by the two-tube bundle of single tube Shu Gaiwei, is made the heating of steam become two-stage by one-level, thereby improved the safe operation of the boiler reliability effectively.
The 3rd, all adopt the riffled tube of little caliber in radiant section and convection section inlet region.
Riffled tube is a pipe of leaving the spirality conduit of single track or multiple tracks on tube wall, and it has the effect that prevents or postpone heat transfer deterioration, mainly shows:
(a) working medium forms strong rotation steam flow under the effect of internal thread, increases mass velocity, makes drops of water fall down to tube wall;
(b) owing to the steam flow strong disturbance, reduced the thermal resistance in boundary layer, augmentation of heat transfer reduces wall temperature;
(c) difficult being entrainmented by the center steam flow of the liquid film in the internal thread groove carried;
(d) it is long-pending that the internal thread groove has increased inner surface of tube, lowered the inner surface heat load, thereby significantly reduced the tube wall temperature peak value, postponed heat transfer deterioration.
Description of drawings
Fig. 1 is the steam pipeline layout structure schematic diagram of existing injection boiler.
Fig. 2 is the profile schematic diagram of injection boiler of the present invention.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the steam pipeline layout structure schematic diagram of injection boiler of the present invention.
Fig. 5 is the half sectional view of burner hearth among Fig. 2.
Fig. 6 is the A-A sound view of Fig. 5.
Fig. 7 is the front view of flue among Fig. 2.
Fig. 8 is the vertical view of Fig. 7.
The specific embodiment
4 connecting tubes of 1 burner, 2 burner hearths, 3 flues
504 outlets of 5 radiation tube bank, 503 inlets
6 convection banks, 601 inlets, 602 outlets, 7 heat exchangers
The enter the mouth 701 shell sides outlet of 700 shell sides
The enter the mouth 703 tube sides outlet of 702 tube sides
8 valves, 9 valves, 10 feed pipes
11 water pipes, 12 water pipes, 13 water pipes
14 steam discharge pipes, 15 water pumps, 16 water pumps
17 chimneys, 18 valves, 19 valves, 20 trailers
24 connecting tubes of 21 burners, 22 burner hearths, 23 flues
253 outlets of 25 first radiation tube bank, 252 inlets
26 first convection banks, 261 inlets, 262 outlets, 27 heat exchangers
The enter the mouth 271 shell sides outlet of 270 shell sides
The enter the mouth 274 tube sides outlet of 273 tube sides
285 outlets of 28 second radiation tube bank, 284 inlets
29 second convection banks, 295 inlets, 296 outlets, 30 feed pipes
34 No. four pipelines of 33 No. three pipelines of 32 No. two pipelines of No. 31 pipelines
35 No. five pipeline 36 steam discharge pipes
Please refer to Fig. 2, Fig. 3, Fig. 4, the present invention is a kind of supercritical pressure steam pouring furnace, have burner 21, burner hearth 22, flue 23, feed pipe 30, be communicated with by connecting tube 24 between burner hearth 22 and the flue 23, the outlet of flue 23 links to each other with chimney 17, the disposed outside of boiler has heat exchanger 27, and heat exchanger 27 is the inner sleeve type water-water heat exchanger.For the ease of mobile operating in the open air, the each several part assembly of boiler all is installed on the trailer 20.
Please refer to Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, in the steam generator system of the present invention, the heating of the final stage of steam is finished by second convection bank 29, and second convection bank 29 is arranged in the flue entrance end, just is arranged in the high-temperature area in the flue.This part regional temperature is higher, near burner hearth, promptly near the high specific hot-zone, can guarantee quality of steam, and far away from the furnace flame central area, maximum heating load heat transfer deterioration can not take place far below radiant section.First convection bank 26 is arranged in the port of export of flue, just is arranged in the low-temperature region in the flue.
First, second radiation tube bank 25,28 is back and forth arranged by the riffled tube level and is constituted.Second convection bank 29 is back and forth arranged by the riffled tube level and is constituted.
Riffled tube is a pipe of leaving the spirality conduit of single track or multiple tracks on tube wall, and it has the effect that prevents or postpone heat transfer deterioration.
Please refer to Fig. 4, the steam flow process of injection boiler of the present invention is as follows:
Temperature from water treatment facilities is after the feedwater about 20 ℃ is boosted by water pump 16, enter the shell side inlet 270 of heat exchanger 27 through feed pipe 30, carry out preheating, the purpose of preheating is that feed temperature is brought up to the flue gas dew point temperature more than 121 ℃, to avoid flue gas condensation corrosion convection bank.Warm water after the preheating is by shell side outlet 271 outputs of heat exchanger 27, enter the inlet 261 of first convection bank 26 through a pipeline 31, water temperature rises to about about 199 ℃ after having absorbed the heat in the flue, export by the outlet 262 of convection bank 26 again, enter the inlet 252 of first radiation tube bank 25 through No. two pipelines 32, further heating in burner hearth 22, water temperature rises to about about 334 ℃, export by the outlet 253 of first radiation tube bank 25 again, enter the tube side inlet 273 of heat exchanger 27 through No. three pipelines 33, carry out heat exchange with feedwater, water temperature is reduced to about 252 ℃ after the heat exchange, tube side outlet 274 outputs from heat exchanger 27, enter the inlet 284 of second radiation tube bank 28 through No. four pipelines 34, post bake in burner hearth 22, water temperature rises to about about 370 ℃, export by the outlet 285 of second radiation tube bank 28 again, enter the inlet 295 of second convection bank 29 through No. five pipelines 35, vaporize or be overheated in high-temperature region in flue 23, vapor (steam) temperature rises to about 395 ℃, by outlet 296 outputs of second convection bank 29, deliver to oil well then through steam discharge pipe 36.
Claims (4)
1. a supercritical pressure steam pouring furnace has burner, burner hearth, flue, feed pipe, is communicated with by connecting tube between burner hearth and the flue, and the disposed outside of boiler has heat exchanger;
It is characterized in that: be furnished with first in the burner hearth, second radiation tube bank, be furnished with first in the flue, second convection bank, described feed pipe is communicated with the shell side inlet of heat exchanger, the shell side outlet of heat exchanger is communicated with the inlet of first convection bank through a pipeline, the outlet of first convection bank is communicated with the inlet of first radiation tube bank through No. two pipelines, the outlet of first radiation tube bank is communicated with the tube side inlet of heat exchanger through No. three pipelines, the tube side outlet of heat exchanger is communicated with the inlet of second radiation tube bank through No. four pipelines, the outlet of second radiation tube bank is communicated with the inlet of second convection bank through No. five pipelines, and the outlet of second convection bank is communicated with steam discharge pipe.
2. supercritical pressure steam pouring furnace as claimed in claim 1 is characterized in that: described first convection bank is arranged in the flue outlet end, and second convection bank is arranged in the flue entrance end.
3. supercritical pressure steam pouring furnace as claimed in claim 1 is characterized in that: described first, second radiation tube bank all is back and forth to be arranged by the riffled tube level to constitute.
4. supercritical pressure steam pouring furnace as claimed in claim 1 is characterized in that: described second convection bank is back and forth arranged by the riffled tube level and is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101633317A CN100559074C (en) | 2007-10-22 | 2007-10-22 | Supercritical pressure steam pouring furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101633317A CN100559074C (en) | 2007-10-22 | 2007-10-22 | Supercritical pressure steam pouring furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135434A CN101135434A (en) | 2008-03-05 |
| CN100559074C true CN100559074C (en) | 2009-11-11 |
Family
ID=39159667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101633317A Active CN100559074C (en) | 2007-10-22 | 2007-10-22 | Supercritical pressure steam pouring furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100559074C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598011B (en) * | 2009-06-29 | 2011-04-27 | 胜利油田三力石油技术开发有限公司 | Split-type two-pass highly-efficient crude oil heating system in well site |
| CN102563837A (en) * | 2012-01-20 | 2012-07-11 | 中国石油天然气第八建设有限公司 | Gas-fired hot water boiler |
| CN108251093A (en) * | 2018-01-31 | 2018-07-06 | 南京工业大学 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
-
2007
- 2007-10-22 CN CNB2007101633317A patent/CN100559074C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 辽河海上稠油热采注蒸汽锅炉小型化技术研究. 武俊宪等.《中国造船》，第46卷. 2005 |
| 辽河海上稠油热采注蒸汽锅炉小型化技术研究. 武俊宪等.《中国造船》，第46卷. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101135434A (en) | 2008-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201582842U (en) | Combined air preheater | |
| CN202303316U (en) | Supercritical pressure direct current boiler | |
| CN100559074C (en) | Supercritical pressure steam pouring furnace | |
| CN101144612B (en) | Skid-mounted type fuel oil supercritical pressure direct-flow gas injection boiler | |
| CN201050773Y (en) | Supercritical pressure steam injection boiler | |
| CN104180359A (en) | Large-tonnage subcritical pressure steam generator | |
| CN103453513A (en) | Cascade utilization method and device of waste gas of flue gas of boiler for thermal power unit | |
| CN206989464U (en) | A kind of module pneumoelectric alliance hot-water heating system | |
| CN101021361B (en) | Steam phase transforming heating furnace | |
| CN105066437B (en) | The complete wet back of the body central flame flame boiler of integral type | |
| CN101144613A (en) | Steam injection boiler with double return loop pipeline | |
| CN206944118U (en) | A kind of low pressure superhigh temperature superheated steam boiler | |
| CN103353107A (en) | Device capable of obtaining superheated steam from high-temperature high-pressure gas | |
| CN206235022U (en) | Gas-fired condensing boiler and its heat-exchanger rig | |
| CN102419122A (en) | Two-phase-flow air preheater | |
| CN102628612B (en) | Two-liner type two-temperature hot water boiler | |
| CN201331046Y (en) | Steam-filling boiler for 50T/h fuel oil or flue gas | |
| CN102980167A (en) | Supercritical pressure coal-fired steam-injection boiler | |
| KR20210039191A (en) | Heat Recovery System for Boiler | |
| CN203454757U (en) | Energy-saving low-resistance efficient coiled tube type heating furnace | |
| CN204693826U (en) | A kind of tandem water batch heater of convenient for maintaining | |
| CN103512190A (en) | Prying installation type water injection boiler | |
| CN106500306A (en) | A kind of counter-burning type wellsite heater | |
| CN203744211U (en) | Steam boiler with forced circulation coal economizer screen | |
| CN204084308U (en) | A kind of oil field high pressure injection steam boiler vapor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |