CN201599783U - Coal-fired superheated steam generator - Google Patents
Coal-fired superheated steam generator Download PDFInfo
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- CN201599783U CN201599783U CN2010200410821U CN201020041082U CN201599783U CN 201599783 U CN201599783 U CN 201599783U CN 2010200410821 U CN2010200410821 U CN 2010200410821U CN 201020041082 U CN201020041082 U CN 201020041082U CN 201599783 U CN201599783 U CN 201599783U
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Abstract
The utility model discloses a coal-fired superheated steam generator. A hearth enclosed by a water cooled wall is arranged on a support of the generator; the water cooled wall is connected with a boiler barrel; a steam-water separator is arranged inside the boiler barrel; a flue is connected onto the hearth; the flue includes a horizontal flue section and a vertical flue section which are communicated; an air preheater and an economizer are arranged inside the vertical flue section; a single-stage superheater arranged inside the horizontal flue section is connected onto a steam outlet of the steam-water separator through a pipeline; and an outlet of the single-stage superheater is connected with a direct-contact desuperheater. By employing the single-stage superheater arranged inside the flue of the hearth to superheat existing wet saturated steam, the coal-fired superheated steam generator further increases the heat content of the steam, and improves the oil displacement effect of the steam in an ultra-thick oil well. Temperature control of superheated steam is extremely convenient by connecting the direct-contact desuperheater to the rear portion of the superheater; an additionally arranged fuel-oil or gas auxiliary combustor is capable of realizing composite firing of raw coal or coal, oil and gas; and the application range of boilers is wider.
Description
Technical field
The utility model belongs to oil field gas injection thermal recovery technical field, relates to a kind of production well that is used for and annotates the boiler of vapour with superheated steam.
Background technology
The particularly super heavy oil wells of heavy oil wells has begun large-scale exploitation at present, because the unusual thickness of its down-hole fluid, could exploit after the thick oil underground well heating must being made its dilution during exploitation.At present, heavy oil wells and super heavy oil wells down-hole heating technique commonly used is to adopt the method for injecting vapours, especially for super heavy oil wells, the mass dryness fraction of the vapours that manufacturing technique requirent injects will reach 100%, but the existing injection boiler of China is oil burning boiler substantially, and the steam that oil burning boiler is produced is saturated vapor, and the mass dryness fraction of saturated vapor only has 70%～80%, its heat content is lower, and the displacing oil underground effect is relatively poor.And, oil burning boiler need consume a large amount of oil, with a boiler is example, just need 20～30 tons of oil of burning every day, ten thousand tons of oil surplus will burning 500 every year such as each oil field, the whole nation such as the Liaohe River, triumph, Xinjiang, Henan, special, Quan Qiu petroleum resources are exhausted day by day in recent years, make oil price significantly go up rapidly, cause the oil field cost for oil production to rise.
On January 3rd, 2007, disclosed application number application number was that 200610047361.7 Chinese invention patent specification discloses a kind of thick oil exploiting coal firiag steam boiler, this Steam-injection Boiler Burning Pulverized Coal to be annotated vapour cost, the oil of saves valuable, vapour resource and is developed in order to reduce, different with fuel oil steam injection boiler is, fuel is changed into fire coal by oil, vapour, reduced notes vapour cost.But the steam quality that this Steam-injection Boiler Burning Pulverized Coal is produced only reaches 80%, and its steam of producing has shortcomings such as heat content is lower, oil displacement efficiency is poor, the individual well steam measurement can't solve, and can't use in super heavy oil wells.
The utility model content
The purpose of this utility model is: provide a kind of heat content higher coal-fired superheated steam generator, to improve the oil displacement efficiency of steam in super heavy oil wells.
The technical solution of the utility model is: a kind of coal-fired superheated steam generator, comprise support, support is provided with the burner hearth that is surrounded by water-cooling wall, water-cooling wall is connected with drum, be provided with steam-water separator in the drum, be connected with flue on the burner hearth, described flue comprises the horizontal flue section and the vertical flue section of connection, vertically be provided with air preheater and economizer in the flue section, be provided with a single-bank superheater in the described horizontal flue section, this single-bank superheater is connected by pipeline on the venthole of described steam-water separator, is connected with direct-contact desuperheater in the outlet of this single-bank superheater.
Described air preheater and economizer are divided into two-stage up and down, and air preheater and economizer are alternately arranged.
Described water-cooling wall is a fin panel casing, is provided with upper and lower two groups of coal burners around this fin panel casing, and each organizes coal burner is 4, and each organizes the coal burner tangential firing.
Around described fin panel casing, also be provided with 4 fuel oils or combustion gas auxiliary burner, each fuel oil or the tangential firing of combustion gas auxiliary burner.
Described support comprises 4 steel columns, is provided with two-layer above connection crossbeam between each steel column, and the steel column top is provided with top board, and described drum, water-cooling wall, superheater, horizontal flue all are suspended on the top board, and described direct-contact desuperheater is fixed on the end face of top board; Also be provided with the independent steelframe of forming by 4 steel column beam, batter braces in support one side, be used for the support of air preheater and economizer.
The utility model adopts technique scheme, it is undertaken existing wet saturated steam to make the mass dryness fraction of steam significantly increase after carbonated drink is separated by drum, further heat again by the single-bank superheater that is provided with in the burner hearth flue steam simultaneously high mass dryness fraction, the heat content of steam is further increased, improved the oil displacement efficiency of steam in super heavy oil wells; The superheater rear portion connects direct-contact desuperheater makes that the temperature control of superheated steam is very convenient, the automaticity height, and thermal capacity is little, security of operation; The fuel oil of setting up or the auxiliary burner of combustion gas can be realized the multifuel combustion of raw coal or coal, oil, gas, and the range of application of boiler is more extensive.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a FB(flow block) of the present utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, coal-fired superheated steam generator of the present utility model is single drum Natural Circulation high pressure pulverized-coal fired boiler, whole superheated steam generator adopts the ∏ type to arrange, before hang the back, the all steel framework, it comprises support 7, and this support 7 is made up of 4 steel columns and the two-layer above connection crossbeam that is fixed between each steel column, also is connected with the whole anti-seismic performance of brace with reinforced support between connection crossbeam and steel column.Be connected with a top board on each steel column top, on the top board suspention drum 1 is arranged, burner hearth, the superheater 14 that surrounds by fin panel casing 6 and the flue that is communicated with upper furnace.Be provided with cyclone steam separator 2 in the drum 1; The two ends up and down of water-cooling wall are respectively equipped with water-cooling wall upper collecting chamber 4 and water-cooling wall next part case 8; The upper/lower terminal of superheater 14 is respectively equipped with superheater inlet header case and super-heater exit case; The upper surface of top board also is equipped with collection vapour collection case 9, direct-contact desuperheater 10 and main steam line 11; The leading portion of flue is the horizontal flue section, and the afterbody of flue is a vertical flue section straight down, and superheater 14 is a single-bank superheater, and this single-bank superheater 14 is arranged in the horizontal flue section.Side at support 7 also is provided with the independent steelframe of being made up of 4 steel column beam, batter braces, alternately be provided with upper and lower two-stage air preheater 16,18 and upper and lower two-stage economizer 15,17 on this independent steelframe, air preheater 16,18 and economizer 15,17 all are arranged in the vertical flue section of flue afterbody.Be connected with the feed-regulating valve group in the import of following economizer 17, the outlet of last economizer 15 is connected with the water inlet of drum 1, the delivery port of drum 1 is connected with down-comer 5, the end of down-comer 5 is connected on the water inlet of water-cooling wall next part case 8, the delivery port of water-cooling wall next part case 8 is connected with the water inlet of water-cooling wall 6, the delivery port of water-cooling wall 6 is connected with water-cooling wall upper collecting chamber 4, the outlet of water-cooling wall upper collecting chamber 4 is connected with cyclone steam separator 2 imports of setting in the drum 1, the inlet header case of the outlet of cyclone steam separator 2 and superheater 14 is communicated with, the outlet of the inlet header case of superheater 14 and the air intake of superheater 14 are communicated with, the venthole of superheater 14 and the air intake of super-heater exit case are communicated with, the import of the venthole of super-heater exit case and collection vapour collection case 9 and direct-contact desuperheater 10 is communicated with, collection vapour collection case 9, direct-contact desuperheater 10 outlets and main steam line 11 are communicated with, the import of spray water control valve group and feed pump outlet are communicated with, and the water inlet of its outlet and direct-contact desuperheater 10 is communicated with.
In the present embodiment, fin panel casing 6 adds the weldering band steel by steel pipe and forms, whole water-cooling wall 6 is divided into 12 loops, totally 4, the 4 water-cooling walls compositions in every 3 three loops hang basket type structure, be suspended on the top board by erecting by overhang, the good metal sealing is all adopted in each water-cooling wall coupling part, and the separation for hanging after propping up before the boiler between reversal chamber and the last economizer 15 leaves the expansion clearance, adopt resistant to elevated temperatures non-metal expansion joint, the enhanced leaktightness effect is provided with around fin panel casing, following two groups of coal burners, each organizes coal burner is 4, also be provided with 4 fuel oils or combustion gas auxiliary burner around the water-cooling wall simultaneously, each organizes the coal burner tangential firing.The coal-supplying amount of boiler carries out automatic or manual with Impeller powder feeder to be regulated, and fuel oil, gas quantity are regulated by the electric control valve automatic or manual, and the load of boiler uses the number of burner to adjust by increase and decrease coal-supplying amount or adjustment.
Down-comer 5 imports link to each other with drum 1 bottom, and down-comer 5 inlets are for preventing that producing whirlpool is equipped with grid 3 and four-bladed vane.
The pipe stagger arrangement of economizer 15,17 arranges that the pipe of every group of economizer is all established wearing-resistant tile, and wearing-resistant tile is all established in the inboard and the outside of all coiled pipe elbows, has effectively prevented the wearing and tearing of flying dust to pipe.Higher level's air preheater 16 in the air preheater 16,18 is a return structures, and subordinate's air preheater 18 is three return structures, and preheater is a tubular type, vertical layout.
Arranged in the superheated steam generator drum that cyclone separator is as the first separation element, be equipped with to water washing device on drum top, reduces the SIO2 in the steam, the drum top layout equal vapour plate, guarantee to obtain good steam quality by these resolution elements, guarantee the safety of superheater.
Because the oil well displacement of reservoir oil does not need the too high steam of temperature, thereby in the steam generator of the present utility model superheater 14 is arranged on the horizontal flue, and has only arranged one group, direct-contact desuperheater 10 is installed in the back of collection vapour collection case 9.
Air preheater divides two-stage up and down, higher level's one backhaul, and subordinate's three backhauls, preheater is a tubular type, vertical layout.
Feed-regulating valve is divided into two-way, and one the tunnel for just often using, and another road is bypass, uses during for underload.
Its technological process is: former water is introduced in the former water pot by pipeline, bulky grain silt in the former water carries out preliminary precipitate and separate in former water pot, former water after the separation passes through by the multi-medium filtering jar with water pump pressurization back, ultrafiltration apparatus, reverse osmosis unit, the demineralizer that the electricity demineralizer is formed enters the desalination water pot, enter thermal deaerator after demineralized water in the desalination water pot pressurizes by the desalination water pump and carry out thermal de-aeration, deaerated water divides two-way by boiler feed pump pressurization back, one the tunnel enters direct-contact desuperheater regulates and control superheated steam, one the tunnel enters economizer through the control valve group preheats, through drum, down-comer enters the water-cooling wall heating, the steam-water separator of the steam water interface that heating generates in drum separates, steam after the separation is through superheater inlet header case, superheater, super-heater exit case further adds the thermosetting superheated steam, superheated steam is through collection vapour collection case, direct-contact desuperheater carries out auto-control to temperature and generates needed superheated steam, and last superheated steam is exported through jet chimney.The steam of superheated steam generator outlet is the superheated steam with certain degree of superheat, the temperature of superheated steam can be adjusted automatically by the demineralized water straying quatity of adjusting direct-contact desuperheater, and the temperature of steam is determined according to material, wall thickness, the steam injection pressure situation of existing steam injection pipeline.
The utility model adopts the low-cost raw coal of aboundresources to replace natural resources shortage and the high crude oil of price, reduced notes vapour cost, replace saturated moist steam with superheated steam, improved the oil displacement efficiency of steam, increased crude output and recovery ratio, the viscous crude resource is developed more fully, the utility model adopts coal dust firing and oil, gas auxiliary burner is set, the thermal efficiency of steam generator is up to 91%, energy savings.
Claims (5)
1. coal-fired superheated steam generator, comprise support, it is characterized in that, described support is provided with the burner hearth that is surrounded by water-cooling wall, water-cooling wall is connected with drum, be provided with steam-water separator in the drum, be connected with flue on the burner hearth, described flue comprises the horizontal flue section and the vertical flue section of connection, vertically be provided with air preheater and economizer in the flue section, be provided with a single-bank superheater in the described horizontal flue section, this single-bank superheater is connected by pipeline on the venthole of described steam-water separator, is connected with direct-contact desuperheater in the outlet of this single-bank superheater.
2. coal-fired superheated steam generator according to claim 1 is characterized in that, described air preheater and economizer are divided into two-stage up and down, and air preheater and economizer are alternately arranged.
3. coal-fired superheated steam generator according to claim 1, it is characterized in that described water-cooling wall is a fin panel casing, around this fin panel casing, be provided with upper and lower two groups of coal burners, each organizes coal burner is 4, and each organizes the coal burner tangential firing.
4. coal-fired superheated steam generator according to claim 3 is characterized in that, also is provided with 4 fuel oils or combustion gas auxiliary burner, each fuel oil or the tangential firing of combustion gas auxiliary burner around described fin panel casing.
5. coal-fired superheated steam generator according to claim 1, it is characterized in that, described support comprises 4 steel columns, be provided with two-layer above connection crossbeam between each steel column, the steel column top is provided with top board, described drum, water-cooling wall, superheater, horizontal flue all are suspended on the top board, and described direct-contact desuperheater is fixed on the end face of top board; Also be provided with the independent steelframe of forming by 4 steel column beam, batter braces in support one side, be used for the support of air preheater and economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200410821U CN201599783U (en) | 2010-01-08 | 2010-01-08 | Coal-fired superheated steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200410821U CN201599783U (en) | 2010-01-08 | 2010-01-08 | Coal-fired superheated steam generator |
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| CN201599783U true CN201599783U (en) | 2010-10-06 |
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| CN2010200410821U Expired - Lifetime CN201599783U (en) | 2010-01-08 | 2010-01-08 | Coal-fired superheated steam generator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720474A (en) * | 2011-03-31 | 2012-10-10 | 中国石油天然气股份有限公司 | SAGD (steam assisted gravity drainage) wet steam injection station system, boiler water recycling method thereof |
| CN102798111A (en) * | 2012-08-23 | 2012-11-28 | 段伟 | Overheat steam generation device |
| CN103727519A (en) * | 2013-10-25 | 2014-04-16 | 华西能源工业股份有限公司 | Device for preventing low-temperature corrosion of economizer heating surface |
| CN104968915A (en) * | 2012-08-13 | 2015-10-07 | 巴布科克和威尔科克斯能量产生集团公司 | Rapid startup heat recovery steam generator |
| CN105807028A (en) * | 2016-04-01 | 2016-07-27 | 太原理工大学 | Test device for desorbing gas by heating coal body through high temperature steam |
| CN107036082A (en) * | 2017-04-27 | 2017-08-11 | 北京迈未科技有限公司 | Gas furnace for producing combustion gas and recovered steam |
| CN109442446A (en) * | 2018-09-03 | 2019-03-08 | 国核电力规划设计研究院有限公司 | A kind of flue arrangement support construction in thermal power plant |
-
2010
- 2010-01-08 CN CN2010200410821U patent/CN201599783U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720474A (en) * | 2011-03-31 | 2012-10-10 | 中国石油天然气股份有限公司 | SAGD (steam assisted gravity drainage) wet steam injection station system, boiler water recycling method thereof |
| CN102720474B (en) * | 2011-03-31 | 2015-09-09 | 中国石油天然气股份有限公司 | SAGD moist steam steam injection station system and boiler water recoverying and utilizing method thereof |
| CN104968915A (en) * | 2012-08-13 | 2015-10-07 | 巴布科克和威尔科克斯能量产生集团公司 | Rapid startup heat recovery steam generator |
| CN104968915B (en) * | 2012-08-13 | 2017-10-24 | 巴布考克及威尔考克斯公司 | It is quick to start heat recovery steam generator |
| CN102798111A (en) * | 2012-08-23 | 2012-11-28 | 段伟 | Overheat steam generation device |
| CN103727519A (en) * | 2013-10-25 | 2014-04-16 | 华西能源工业股份有限公司 | Device for preventing low-temperature corrosion of economizer heating surface |
| CN105807028A (en) * | 2016-04-01 | 2016-07-27 | 太原理工大学 | Test device for desorbing gas by heating coal body through high temperature steam |
| CN107036082A (en) * | 2017-04-27 | 2017-08-11 | 北京迈未科技有限公司 | Gas furnace for producing combustion gas and recovered steam |
| CN109442446A (en) * | 2018-09-03 | 2019-03-08 | 国核电力规划设计研究院有限公司 | A kind of flue arrangement support construction in thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: China Petrochemical Group Corp. Patentee after: SINOPEC HENAN PETROLEUM ENGINEERING DESIGN COMPANY Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Survey, Design & Research Institute of Henan Petroleum Exploration Bureau of China Petrochemical Corporation |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |