CN104848732A - Back washing method of boiler superheater - Google Patents
Back washing method of boiler superheater Download PDFInfo
- Publication number
- CN104848732A CN104848732A CN201410054549.9A CN201410054549A CN104848732A CN 104848732 A CN104848732 A CN 104848732A CN 201410054549 A CN201410054549 A CN 201410054549A CN 104848732 A CN104848732 A CN 104848732A
- Authority
- CN
- China
- Prior art keywords
- water
- superheater
- washing
- boiler
- deoxygenation
- 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.)
- Pending
Links
Abstract
The invention discloses a back washing method of a boiler superheater, which is mainly used for washing drum boilers with various pressure grades. The back washing method comprises the following steps: (1) a washing water source adopts ammonified demineralized water with a pH value of 9.0-9.5; (2) the washing water source is deoxidized and heated to control the washing water temperature within 80-90 DEG C; and dissolved oxygen is 100 mg/l; (3) a water feeding pump and a deoxidizing water tank form self-circulation, and a temperature reducing water valve is used for charging water in the superheater; the flowing speed of water is 5 t/h; and the water is drained from a low point and is discharged; (4) when the superheater is stood for one hour after being fully filled with the water, the superheater is back washed; and the water is fed into the deoxidizing water tank for heating; and (5) the operations of (3, 4) are repeated until silicon dioxide and sodium content are the same with the washing water. The back washing method of the boiler superheater is short in washing time, low in water consumption and free of corrosion phenomenon in superheater pipes.
Description
Technical field
The present invention is mainly used in the cleaning of various pressure rating dum boiler, is specifically related to boiler superheater back-flushing method.
Background technology
Along with the constantly progress of boiler feedwater technology, boiler feed water condition of water quality is more and more excellent, dum boiler takes many measures in design simultaneously, ensure steam quality, but often can't ensure there is no salification completely in superheater, especially, separator effect is bad in the middle low-pressure boiler adopting demineralized water moisturizing or drum, serious salification in superheater will be caused.Because superheater Incrustation of pipe is complicated, institute's salt scale coagulation is subject to long-term baking, not soluble, how to remove salification safely and effectively, ensures boiler thermal output and security of operation.
Conventional flush adopts condensate water or demineralized water to rinse, and washing time is long, and water consumption is large, easily etching problem occurs simultaneously.
Summary of the invention
The invention provides washing time short, the boiler superheater back-flushing method that water consumption is little.
Technical scheme of the present invention comprises following content:
(1) the ammonification demineralized water that employing pH value in water source is 9.0 ~ 9.5 is rinsed;
(2) utilize and face stove steam and carry out deoxygenation heating to flushing water source, controlled by rinse water temperature at 80 ~ 90 DEG C, dissolved oxygen is 100 micrograms per litre.
(3) feed pump makes itself and deoxygenation water tank form self-loopa, and utilizes desuperheating water valve to carry out water-filling to superheater, and water flow velocity is 5t/h, discharges from low spot is hydrophobic.
(4) quiet bubble one hour after being full of water, starts superheater backwash; Heat to the moisturizing of deoxygenation water tank simultaneously.
(5) step 3,4 repeatedly, until silica, identical with flushing water containing sodium amount.
Washing time of the present invention is short, and water consumption is little, and the corrosion-free phenomenon of superheater pipeline.
Detailed description of the invention
(1) the ammonification demineralized water (or adopting hydrazine to regulate) that employing pH value in water source is 9.0 ~ 9.5 is rinsed;
(2) utilize and face stove steam and carry out deoxygenation heating to it, controlled by rinse water temperature at 80 ~ 90 DEG C, dissolved oxygen is 100 micrograms per litre.
(3) feed pump makes itself and deoxygenation water tank form self-loopa, and utilizes desuperheating water valve to carry out water-filling to superheater, and water flow velocity is 5t/h, discharges from low spot is hydrophobic.
(4) quiet bubble one hour after being full of water, starts superheater backwash; Heat to the moisturizing of deoxygenation water tank simultaneously.
(5) step 3,4 repeatedly, until silica, identical with flushing water containing sodium amount.
Claims (1)
1. boiler superheater back-flushing method, is characterized in that comprising following content:
(1) the ammonification demineralized water that employing pH value in water source is 9.0 ~ 9.5 is rinsed;
(2) carry out deoxygenation heating to flushing water source, controlled by rinse water temperature at 80 ~ 90 DEG C, dissolved oxygen is 100 micrograms per litre;
(3) feed pump makes itself and deoxygenation water tank form self-loopa, and utilizes desuperheating water valve to carry out water-filling to superheater, and water flow velocity is 5t/h, discharges from low spot is hydrophobic;
(4) superheater quiet bubble one hour after being full of water, starts superheater backwash; Heat to the moisturizing of deoxygenation water tank simultaneously;
(5) (3), (4) operation is repeatedly carried out, until silica, identical with flushing water containing sodium amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410054549.9A CN104848732A (en) | 2014-02-18 | 2014-02-18 | Back washing method of boiler superheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410054549.9A CN104848732A (en) | 2014-02-18 | 2014-02-18 | Back washing method of boiler superheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104848732A true CN104848732A (en) | 2015-08-19 |
Family
ID=53848565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410054549.9A Pending CN104848732A (en) | 2014-02-18 | 2014-02-18 | Back washing method of boiler superheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104848732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247316A (en) * | 2016-07-29 | 2016-12-21 | 太仓英达锅炉设备有限公司 | A kind of boiler superheater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201974430U (en) * | 2011-03-24 | 2011-09-14 | 昆明醋酸纤维有限公司 | Water feeding device for boiler water pressure test |
| CN102796537A (en) * | 2012-08-31 | 2012-11-28 | 上海宝钢节能技术有限公司 | System and method for recovering superheated steam of waste heat of raw gas of combined coke oven |
| CN102816574A (en) * | 2012-08-31 | 2012-12-12 | 上海宝钢节能技术有限公司 | Device for generating electricity from waste heat of raw coke oven gas |
| CN202836340U (en) * | 2012-08-08 | 2013-03-27 | 华电潍坊发电有限公司 | Chemical washing device for boiler superheater |
| CN203100538U (en) * | 2013-02-03 | 2013-07-31 | 成都酷玩网络科技有限公司 | Superheater tube washing system |
-
2014
- 2014-02-18 CN CN201410054549.9A patent/CN104848732A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201974430U (en) * | 2011-03-24 | 2011-09-14 | 昆明醋酸纤维有限公司 | Water feeding device for boiler water pressure test |
| CN202836340U (en) * | 2012-08-08 | 2013-03-27 | 华电潍坊发电有限公司 | Chemical washing device for boiler superheater |
| CN102796537A (en) * | 2012-08-31 | 2012-11-28 | 上海宝钢节能技术有限公司 | System and method for recovering superheated steam of waste heat of raw gas of combined coke oven |
| CN102816574A (en) * | 2012-08-31 | 2012-12-12 | 上海宝钢节能技术有限公司 | Device for generating electricity from waste heat of raw coke oven gas |
| CN203100538U (en) * | 2013-02-03 | 2013-07-31 | 成都酷玩网络科技有限公司 | Superheater tube washing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247316A (en) * | 2016-07-29 | 2016-12-21 | 太仓英达锅炉设备有限公司 | A kind of boiler superheater |
| CN106247316B (en) * | 2016-07-29 | 2019-05-03 | 安徽中节环保新能源有限公司 | A kind of boiler superheater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204962711U (en) | Supercritical unit or super supercritical unit do not have oxygen -eliminating device heat regenerative system | |
| CN104211187B (en) | The method of operation of steam boiler | |
| CN104233329B (en) | Chemical cleaning method of heat exchanger | |
| CN104529015B (en) | A kind of coal unit boiler draining system method for anticorrosion treatment | |
| JP2017074550A (en) | Water treatment apparatus for boiler feed water and boiler operation method | |
| CN103438423A (en) | Steam plant and method of operating the same | |
| CN203628621U (en) | Medium-pressure boiler water-circulation system | |
| CN203704320U (en) | Instant water boiler | |
| CN104848732A (en) | Back washing method of boiler superheater | |
| CN203501147U (en) | Feed water treatment and regulation device for cement kiln low-temperature cogeneration system | |
| CN102621284A (en) | Evaluation simulator for corrosion and scaling of steam-driven boiler by polymer-containing oilfield produced water | |
| CN101184955A (en) | Boiler apparatus | |
| JP5970884B2 (en) | Anticorrosion method | |
| JP2013213660A (en) | Steam plant and method for operating the same | |
| CN204227406U (en) | A kind of coke dry quenching boiler feedwater deaerating system | |
| WO2016139837A1 (en) | Method for cleaning furnace wall tube of once-through boiler | |
| CN102305395B (en) | Water washing method of concurrent boiler provided with boiler water pump | |
| JP2007263385A (en) | Boiler water supply processing device, boiler device, and operation method of boiler water supply processing device | |
| CN204043200U (en) | A kind of natural gas water batch heater with chemical conveying equipment | |
| CN205261524U (en) | Marine boiler hot well steam -jet ejector heating system | |
| CN205245883U (en) | Wash device of boiler | |
| CN209246060U (en) | A kind of boiler blowdown water residual neat recovering system | |
| CN211827035U (en) | Bypass-free steam drum water level control structure | |
| CN205015046U (en) | Waste heat power plant boiler water level measurement and control device | |
| CN206504314U (en) | The water side system structure run based on feed water oxygenation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150819 |