CN202303316U - Supercritical pressure direct current boiler - Google Patents
Supercritical pressure direct current boiler Download PDFInfo
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- CN202303316U CN202303316U CN2011203813142U CN201120381314U CN202303316U CN 202303316 U CN202303316 U CN 202303316U CN 2011203813142 U CN2011203813142 U CN 2011203813142U CN 201120381314 U CN201120381314 U CN 201120381314U CN 202303316 U CN202303316 U CN 202303316U
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Abstract
The utility model relates to the technical field of oil field heavy oil thermal recovery, in particular to a supercritical pressure direct current boiler. Heat preservation pouring materials and alumina silicate fibers are lined in a casing of a radiation section of the direct current boiler, a convection section and a superheat section are respectively of a square-box-shaped framework structure, and interior pipe bundles adopt vertical snakelike reciprocating pipe mode arrangement and are lined with heat preservation pouring materials and alumina silicate fibers. A casing of a transition section is of an arc structure formed by rolling steel plates and is lined with refractory castables and alumina silicate fibers. Pipe bundles of the radiation section, light-pipe pipe bundles of the superheat section and fin pipe bundles of the superheat section are made of alloy internal threaded steel pipes, a plunger pump is connected with a boiler pipe pipeline in the radiation section, a boiler pipe in the radiation section is respectively in pipeline connection with pipe bundles in the convection section and the pipe bundles in the superheat section, and the pipe bundles in the superheat section are connected with a steam-water separator. The supercritical pressure direct current boiler achieves good steam injection effect, removes potential safety hazards when the boiler operates under supercritical pressure, and is ensured to operate safely for a long time.
Description
Technical field:
The utility model relates to a kind of oil-field thick-oil thermal recovery technical field, particularly a kind of supercritical pressure direct-flow boiler.
Background technology:
Viscous crude has a very wide distribution, but because its colloidal bitumen content is high, viscosity is high in oil reservoir, and flow resistance is big, and conventional production technique is difficult to effective exploitation.The effective ways of thickened oil recovery at present are oil recoveries by heating.The fundamental way of oil recovery by heating is with the oil reservoir heating, improves the temperature of oil reservoir, reduces viscosity of crude and filtrational resistance, reaches the flowability that increases crude oil, improves the purpose of recovery ratio.
The main mode of heavy crude heat extraction is the steam injection oil recovery by heating, and basic skills is steam soak and steam flooding.Injection boiler is the special-purpose steam generating equipment of steam injection oil recovery by heating, is the key equipment of heavy crude heat extraction.In the exploitation of burying the heavy oil block more shallow, that pressure is lower, existing uphole steam generator technology is ripe, can effectively improve thick oil recovery ratio.But darker along with burying, the progressively exploitation of the heavy oil block that pressure is higher, the heavy crude heat extraction technology is had higher requirement to the performance indications of uphole steam generator.Existing uphole steam generator generally operates under the subcritical pressure boiler; Steam injection difficulty comparatively in deep-well, it is undesirable to annotate the vapour effect, and recovery ratio is low; The performance of existing uphole steam generator can not satisfy the requirement of deep-well heavy crude heat extraction, and the uphole steam generator technology is in urgent need to be improved.
The utility model content:
The technical problem that the utility model will solve provides a kind of supercritical pressure direct-flow boiler, and this boiler has realized that notes vapour is effective, eliminates the potential safety hazard that boiler moves under supercritical pressure, guarantees the operation of boiler long-term safety.Having overcome existing boiler annotates the vapour difficulty, annotates the unfavorable deficiency of vapour effect in deep-well heavy oil block steam injection oil recovery by heating process.
The technical scheme that the utility model is taked is: a kind of supercritical pressure direct-flow boiler comprises chimney, convection section, superheat section, changeover portion, radiant section, steam (vapor) outlet, steam-water separator, burner, plunger displacement pump and boiler feedwater inlet; Radiant section adopts horizontal columnar structured, and the boiler tube level arranges that back and forth housing is rolled by steel plate and forms, more piece assembly welding, liner insulated pouring material and alumina silicate fibre; Convection section and superheat section are the square box shape tower structure, and vertical snakelike reciprocation pipe arranged in form, liner insulated pouring material and alumina silicate fibre are adopted in inner tube bank; The changeover portion housing is the arcuate structure that is rolled by steel plate, liner castable refractory and alumina silicate fibre; Wherein radiant section tube bank, the tube bank of superheat section light pipe and superheat section finned-tube bundle are selected the alloy inner thread steel pipe for use; Plunger displacement pump is connected with the interior boiler tube pipeline of radiant section; The interior boiler tube of radiant section is connected with the inner tube bank of convection section, the inner tube bank difference of superheat section pipeline, and the inner tube bank of superheat section is connected with steam-water separator.
Radiant section tube bank, the tube bank of superheat section light pipe and superheat section finned-tube bundle are selected 12Cr1MoVG alloy or 15CrMoG alloy inner thread steel pipe for use.
The beneficial effect of the utility model is: the utility model is owing to improved existing uphole steam generator carbonated drink flow process; Abandoned the water-to-water heat exchanger of conventional uphole steam generator; Thereby prevented that water-to-water heat exchanger is big in the working medium temperature difference, had potential safety hazard when operating pressure is higher; Notes vapour is effective, eliminates the potential safety hazard that boiler moves under supercritical pressure, guarantees the operation of boiler long-term safety.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the utility model carbonated drink schematic flow sheet.
The specific embodiment:
As shown in Figure 1, a kind of supercritical pressure direct-flow boiler comprises chimney 1, convection section 2, superheat section 3, changeover portion 4, radiant section 5, steam (vapor) outlet 6, steam-water separator 7, burner 8, plunger displacement pump 9 and boiler feedwater inlet 10; Radiant section 5 adopts horizontal columnar structured, and the boiler tube level arranges that back and forth housing is rolled by steel plate and forms; The more piece assembly welding, liner insulated pouring material and alumina silicate fibre can effectively reduce the heat that is delivered to housing; Reduce radiant section 5 outside wall temperatures; Reduce radiation loss, insulation material makes working medium absorption more heat in the boiler tube to the boiler tube reflecting heat; Convection section 2 is the square box shape tower structure with superheat section 3, and vertical snakelike reciprocation pipe arranged in form, liner insulated pouring material and alumina silicate fibre are adopted in inner tube bank; Changeover portion 4 housings are the arcuate structures that rolled by steel plate, liner castable refractory and alumina silicate fibre; Wherein radiant section 5 tube banks, the tube bank of superheat section 3 light pipes and superheat section 3 finned-tube bundles are selected the 12Cr1MoVG alloy or the 15CrMoG alloy inner thread steel pipe of little caliber for use; It is long-pending to increase inner surface of tube; Lower the inner surface heat load; Can reduce thermal boundary resistance, strengthen heat exchange, reduce tube wall temperature, effectively prevent or postpone the generation of heat transfer deterioration; Plunger displacement pump 9 is connected with radiant section 5 interior boiler tube pipelines, and radiant section 5 interior boiler tubes are connected with convection section 2 inner tube banks, the superheat section 3 inner difference pipelines of restraining, and superheat section 3 inner tube banks are connected with steam-water separator 7.Boiler integral body is installed on the trailer 11, is the moveable structure arrangement form, also can adopt sledge seat formula structural arrangement form.
As shown in Figure 2; After a kind of supercritical pressure direct-flow boiler carbonated drink flow process is boosted for the demineralized water that comes from water treatment facilities gets into plunger displacement pump 9; Get into radiant section 5 absorption portion heats; Water temperature reaches the above convection section 2 that gets into of flue gas dew point temperature (110-120 ℃) is heated, and prevents the cold end corrosion of back-end surfaces.After water becomes high-temperature water through convection section 2 absorption heats; Get into radiant section 5 once more, water temperature after radiant section 5 carries out radiation heat transfer is raised to certain value (less than big lowest temperature value than the hot-zone), gets into superheat section 3 and absorbs the high-temperature flue gas heats; Temperature further raises; Produce the notes well superheated steam of supercritical pressure, get into steam pipe line, supply the user to use through steam-water separator 7 backs.
It is understandable that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (2)
1. a supercritical pressure direct-flow boiler comprises chimney (1), convection section (2), superheat section (3), changeover portion (4), radiant section (5), steam (vapor) outlet (6), steam-water separator (7), burner (8), plunger displacement pump (9) and boiler feedwater inlet (10); It is characterized in that: radiant section (5) adopts horizontal columnar structured, and the boiler tube level arranges that back and forth housing is rolled by steel plate and forms, more piece assembly welding, liner insulated pouring material and alumina silicate fibre; Convection section (2) is the square box shape tower structure with superheat section (3), and vertical snakelike reciprocation pipe arranged in form, liner insulated pouring material and alumina silicate fibre are adopted in inner tube bank; Changeover portion (4) housing is the arcuate structure that is rolled by steel plate, liner castable refractory and alumina silicate fibre; Wherein radiant section (5) tube bank, the tube bank of superheat section (3) light pipe and superheat section (3) finned-tube bundle are selected the alloy inner thread steel pipe for use; Plunger displacement pump (9) is connected with the interior boiler tube pipeline of radiant section (5); The interior boiler tube of radiant section (5) is connected with the inner tube bank of convection section (2), the inner tube bank difference of superheat section (3) pipeline, and the inner tube bank of superheat section (3) is connected with steam-water separator (7).
2. according to the described supercritical pressure direct-flow boiler of claim 1, it is characterized in that: said radiant section (5) tube bank, the tube bank of superheat section (3) light pipe and superheat section (3) finned-tube bundle are selected 12Cr1MoVG alloy or 15CrMoG alloy inner thread steel pipe for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203813142U CN202303316U (en) | 2011-10-09 | 2011-10-09 | Supercritical pressure direct current boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203813142U CN202303316U (en) | 2011-10-09 | 2011-10-09 | Supercritical pressure direct current boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202303316U true CN202303316U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203813142U Expired - Fee Related CN202303316U (en) | 2011-10-09 | 2011-10-09 | Supercritical pressure direct current boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN202303316U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980167A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团渤海石油装备制造有限公司 | Supercritical pressure coal-fired steam-injection boiler |
| CN103343960A (en) * | 2013-06-28 | 2013-10-09 | 西安交通大学 | Overheating steam-injection boiler system with oil extraction waste liquid with only suspended solids and hardness removed as water supply |
| CN104180359A (en) * | 2014-09-04 | 2014-12-03 | 中国石油天然气第八建设有限公司 | Large-tonnage subcritical pressure steam generator |
| CN105423268A (en) * | 2015-12-03 | 2016-03-23 | 西安热工研究院有限公司 | Three-way power station boiler suitable for 700 DEG C steam parameter |
| WO2018049703A1 (en) * | 2016-09-18 | 2018-03-22 | 江苏金牛环保工程设备有限公司 | Ethanol dehydration steam heating device |
| CN113237048A (en) * | 2021-04-24 | 2021-08-10 | 中国石油天然气集团有限公司 | Superheated steam injection boiler system for ocean heavy oil exploitation |
-
2011
- 2011-10-09 CN CN2011203813142U patent/CN202303316U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980167A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团渤海石油装备制造有限公司 | Supercritical pressure coal-fired steam-injection boiler |
| CN103343960A (en) * | 2013-06-28 | 2013-10-09 | 西安交通大学 | Overheating steam-injection boiler system with oil extraction waste liquid with only suspended solids and hardness removed as water supply |
| CN104180359A (en) * | 2014-09-04 | 2014-12-03 | 中国石油天然气第八建设有限公司 | Large-tonnage subcritical pressure steam generator |
| CN105423268A (en) * | 2015-12-03 | 2016-03-23 | 西安热工研究院有限公司 | Three-way power station boiler suitable for 700 DEG C steam parameter |
| WO2018049703A1 (en) * | 2016-09-18 | 2018-03-22 | 江苏金牛环保工程设备有限公司 | Ethanol dehydration steam heating device |
| CN113237048A (en) * | 2021-04-24 | 2021-08-10 | 中国石油天然气集团有限公司 | Superheated steam injection boiler system for ocean heavy oil exploitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20191009 |