CN203442801U - Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler - Google Patents
Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler Download PDFInfo
- Publication number
- CN203442801U CN203442801U CN201320433958.0U CN201320433958U CN203442801U CN 203442801 U CN203442801 U CN 203442801U CN 201320433958 U CN201320433958 U CN 201320433958U CN 203442801 U CN203442801 U CN 203442801U
- Authority
- CN
- China
- Prior art keywords
- wall
- adherent
- bellows
- high temperature
- temperature corrosion
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a wall closing wind device for preventing high temperature corrosion of a water wall of a side wall of a spiral opposed firing boiler. The wall closing wind device comprises a side wall secondary wind box, a wall closing wind box, a wind box connection pipe, a regulating valve and a smoke sampling pipe. The wall closing wind device has the benefits of monitoring the wall surface atmosphere of the water wall of the side wall to judge if the high temperature corrosion is easily generated, regulating the volume of wall closing wind with purposes according to the monitored value of the wall closing atmosphere of the side wall, guiding in the wall closing wind through opening round holes on fins for being applied in a small-spacing spiral tube ring water wall, needing no modification to the water wall, easily operating and using low investment.
Description
Technical field
The utility model relates to a kind of rotation flow impact burning boiler side water wall high temperature corrosion Prevention Technique, relates in particular to a kind of adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall.
Background technology
In recent years, along with the develop rapidly of power technology, the advantage such as supercritical unit is high with its generating efficiency, pollutant emission is low, was just widely applied at home.But in actual motion, the side water wall high temperature corrosion of the overcritical rotation flow impact burning boiler matching with such unit but becomes the subject matter that affects its reliability.It not only can corrosion thinning water-cooling wall, increases the cost of overhaul of power plant, and can cause water-cooling wall booster to shut down when serious, affects the economic benefit of power plant and the security of electrical network.
High temperature corrosion is the complicated physical and chemical process of furnace high-temperature flue gas and water-cooling wall surface interaction, and the common high temperature corrosion of coal-fired power station boiler mainly contains two types: sulfate type and sulfide type.The high temperature corrosion of furnace water cooling wall surface is mainly sulfide type, and its corrosion mechanism is as follows:
(1) pyrite (FeS in fuel
2) with soot particle and uncombusted coal dust, be flushed on tube wall, decomposes comes from by atomic sulfur and ferrous sulfide:
FeS
2→FeS+[S]
In addition, near tube wall, there is H
2s and SO
2time also may generate [S]:
H
2S+SO
2→2H
2O+3[S]
(2) in reducing atmosphere, due to anoxic, atomic sulfur is individualism likely, when tube wall temperature reaches 350 ℃, following reaction can occur:
(3) ferrous sulfide carries out eremacausis and generates black magnetic iron oxide Fe
3o
4
3FeS+5O
2→Fe
3O
4+3SO
2
This process continues to occur, and makes water screen tube corrosion thinning.
At present, the technology of control rotation flow impact burning boiler side water wall high temperature corrosion mainly contains:
(1) anti-corrosion spray: at water wall high temperature corrosion region spraying abrasion-proof anti-corrosion material; it has certain effect, but this is a kind of passive method of curing the symptoms, not the disease, and in the situation that spraying coating process cannot guarantee; there will be corrosion-inhibiting coating to come off, can not play the effect of anti-corrosion protection.
(2) patent (notification number: CN202546739U) described in the device > > of < < control side water wall high temperature corrosion, between front-back wall outermost burner and side wall, spout is installed, its spout wind direction covers the perishable region of side wall, to improve the wall atmosphere of side water wall, the high temperature corrosion that alleviates water-cooling wall; Patent (publication number: CN101280919A) < < Opposite Firing Boiler burner hearth and arranging on side wall described in the method > > of air nozzle, more than the intersection that descends most row's coal burner shaft section and both walls, be symmetrical arranged 1～6 air-discharging nozzle with side wall center line, each air nozzle is integral with side wall fit sealing and is communicated with burner hearth cavity.By air nozzle, to side water wall region, carry out oxygenating, reduced wall reducing atmosphere, effectively prevent the high temperature corrosion of side water wall.
Above two patents all have certain preventive and therapeutic effect to the high temperature corrosion of side water wall, but all need to transform water screen tube, and workload is large, and lack the effective means of monitoring and control spout air quantity.
Utility model content
The purpose of this utility model is exactly in order to prevent and treat the high temperature corrosion of rotation flow impact burning boiler side water wall, has proposed a kind of adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall.This device is without transformation water-cooling wall, simple, small investment.
To achieve these goals, the utility model adopts following technical scheme:
An adherent wind apparatus for rotation flow impact burning boiler side water wall high temperature corrosion, comprises side wall secondary air box, adherent bellows, bellows liaison tube, control valve and gas sampling probe; Furnace wall outside in side water wall high temperature corrosion region, is evenly arranged adherent wind apparatus along furnace height direction, along furnace depth direction, is evenly arranged adherent bellows; From secondary air box, to each, arrange adherent wind apparatus and draw a side wall secondary air box, and by bellows liaison tube, each adherent bellows is connected with side wall secondary air box; On the water-cooling wall fin of adherent bellows overlay area, along water-cooling wall axis direction, open circular hole, in order to introduce adherent wind; In adherent bellows overlay area, be evenly arranged two stainless steel flue gas probe tubes, its one end passes in stove, concordant with fin, and the other end is drawn adherent bellows and connected flue gas analyzer; On the bellows liaison tube between adherent bellows and side secondary air case, control valve is installed.
The adherent wind apparatus of described furnace height direction is 2-4 row, and every arranging device is evenly arranged 3 adherent bellows along furnace depth direction.
The Circularhole diameter that described water-cooling wall axis direction is opened is
6mm, opens one every 4cm;
Described stainless steel flue gas probe tube diameter is
6mm;
The beneficial effects of the utility model are:
Rotation flow impact burning boiler adopts the advantage of the utility model device to be:
(1) can monitor side water wall wall atmosphere, judge whether to be easy to produce high temperature corrosion;
(2) can be according to the monitor value of the adherent atmosphere of side wall, have for the adherent air quantity of adjusting;
(3) on fin, open circular hole and introduce adherent wind, be applicable to fine pith Spiral Coil Waterwall;
(4) without transformation water-cooling wall, simple, small investment.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
Wherein, 1. side wall secondary air box, 2. control valve, 3. bellows liaison tube, 4. gas sampling probe, 5. adherent bellows, 6. boiler right-side wall, 7. boiler left side wall
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
In Fig. 1, according to the situation of boiler right-side wall 6 and boiler left side wall 7 water wall high temperature corrosions, the furnace wall outside in corresponding region, is evenly arranged the adherent wind apparatus of 2～4 row along furnace height direction, and every arranging device is evenly arranged 3 adherent bellows 5 along furnace depth direction; From secondary air box, to each, arrange adherent wind apparatus and draw a side wall secondary air box 1, and by bellows liaison tube 3, each adherent bellows 5 is connected with side wall secondary air box 1; On the water-cooling wall fin of adherent bellows 5 overlay areas, along water-cooling wall axis direction, every 4cm, open one
the circular hole of 6mm, in order to introduce adherent wind; In order to monitor the wall atmosphere of side water wall, in each adherent bellows 5 overlay area, be evenly arranged two
6mm stainless steel flue gas probe tube 4, its one end passes in stove, concordant with fin, and the other end is drawn adherent bellows and is connected flue gas analyzer; On the bellows liaison tube 3 between adherent bellows 5 and side wall secondary air box 1, control valve 2 is installed.
Domestic power plant universal experience is thought, O2<1% in wall atmosphere, during CO>0.5%, just can judge that the adherent region of water-cooling wall is strong reducing property atmosphere, easily produces high temperature corrosion.The gas sampling probe 4 that the adherent bellows 5 of flue gas analyzer and side wall are arranged is connected, the adherent atmosphere of monitoring side wall, when being strong reducing property atmosphere, drive large control valve 2, increase the air quantity that enters adherent bellows 5, when adherent atmosphere is avoided reducing atmosphere, stop adjusting control valve 2 apertures, this region has not possessed the condition that produces high temperature corrosion, by that analogy, can make side water wall avoid strong reducing property atmosphere, reach the object of control high temperature corrosion.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (4)
1. an adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall, is characterized in that, comprises side wall secondary air box, adherent bellows, bellows liaison tube, control valve and gas sampling probe;
Furnace wall outside in side water wall high temperature corrosion region, is evenly arranged adherent wind apparatus along furnace height direction, along furnace depth direction, is evenly arranged adherent bellows;
From secondary air box, to each, arrange adherent wind apparatus and draw a side wall secondary air box, and by bellows liaison tube, each adherent bellows is connected with side wall secondary air box;
On the water-cooling wall fin of adherent bellows overlay area, along water-cooling wall axis direction, open circular hole, in order to introduce adherent wind;
In adherent bellows overlay area, be evenly arranged two stainless steel flue gas probe tubes, its one end passes in stove, concordant with fin, and the other end is drawn adherent bellows and connected flue gas analyzer;
On the bellows liaison tube between adherent bellows and side secondary air case, control valve is installed.
2. a kind of adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall as claimed in claim 1, it is characterized in that, the adherent wind apparatus of described furnace height direction is 2-4 row, and every arranging device is evenly arranged 3 adherent bellows along furnace depth direction.
3. a kind of adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall as claimed in claim 1, is characterized in that, the Circularhole diameter that described water-cooling wall axis direction is opened is
6mm, opens one every 4cm.
4. a kind of adherent wind apparatus of preventing and treating the high temperature corrosion of rotation flow impact burning boiler side water wall as claimed in claim 1, is characterized in that, described stainless steel flue gas probe tube diameter is
6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433958.0U CN203442801U (en) | 2013-07-19 | 2013-07-19 | Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433958.0U CN203442801U (en) | 2013-07-19 | 2013-07-19 | Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442801U true CN203442801U (en) | 2014-02-19 |
Family
ID=50093853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320433958.0U Expired - Lifetime CN203442801U (en) | 2013-07-19 | 2013-07-19 | Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442801U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912893A (en) * | 2014-04-15 | 2014-07-09 | 太原理工大学 | Boiler water-cooled wall protecting device capable of preventing coking and high temperature corrosion |
| CN104456538A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Device and method for retarding high-temperature corrosion on rotational flow opposed combustion boiler water wall |
| CN104595889A (en) * | 2015-01-21 | 2015-05-06 | 西安西热锅炉环保工程有限公司 | System and method for eliminating operation oxygen deviation at two sides of tangential firing boiler |
| CN104595891A (en) * | 2015-01-21 | 2015-05-06 | 西安热工研究院有限公司 | Opposed firing structure of boiler |
| CN107702135A (en) * | 2017-10-12 | 2018-02-16 | 华中科技大学 | A kind of boiler furnace structure of high temperature corrosion resistance anti-coking |
| CN107806633A (en) * | 2016-09-09 | 2018-03-16 | 中国电力工程顾问集团华北电力设计院有限公司 | CFB boiler air film Wear-proof water cooled wall structure |
| CN108266723A (en) * | 2018-01-26 | 2018-07-10 | 刘光奎 | A kind of adherent wind apparatus of pulverized-coal fired boiler water-cooling wall concave inward structure |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
| CN112797401A (en) * | 2021-01-04 | 2021-05-14 | 苏州西热节能环保技术有限公司 | Method for improving reducing atmosphere of side wall water-cooled wall of opposed firing boiler |
| CN114484463A (en) * | 2022-01-17 | 2022-05-13 | 河南省锅炉压力容器安全检测研究院 | Device for preventing high-temperature corrosion of heating surface of waste incineration boiler |
-
2013
- 2013-07-19 CN CN201320433958.0U patent/CN203442801U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912893A (en) * | 2014-04-15 | 2014-07-09 | 太原理工大学 | Boiler water-cooled wall protecting device capable of preventing coking and high temperature corrosion |
| CN104456538A (en) * | 2014-11-21 | 2015-03-25 | 国家电网公司 | Device and method for retarding high-temperature corrosion on rotational flow opposed combustion boiler water wall |
| CN104595889A (en) * | 2015-01-21 | 2015-05-06 | 西安西热锅炉环保工程有限公司 | System and method for eliminating operation oxygen deviation at two sides of tangential firing boiler |
| CN104595891A (en) * | 2015-01-21 | 2015-05-06 | 西安热工研究院有限公司 | Opposed firing structure of boiler |
| CN107806633A (en) * | 2016-09-09 | 2018-03-16 | 中国电力工程顾问集团华北电力设计院有限公司 | CFB boiler air film Wear-proof water cooled wall structure |
| CN107702135A (en) * | 2017-10-12 | 2018-02-16 | 华中科技大学 | A kind of boiler furnace structure of high temperature corrosion resistance anti-coking |
| CN107702135B (en) * | 2017-10-12 | 2019-07-26 | 华中科技大学 | A kind of boiler furnace structure of high temperature corrosion resistance anti-coking |
| CN108266723A (en) * | 2018-01-26 | 2018-07-10 | 刘光奎 | A kind of adherent wind apparatus of pulverized-coal fired boiler water-cooling wall concave inward structure |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
| CN112797401A (en) * | 2021-01-04 | 2021-05-14 | 苏州西热节能环保技术有限公司 | Method for improving reducing atmosphere of side wall water-cooled wall of opposed firing boiler |
| CN114484463A (en) * | 2022-01-17 | 2022-05-13 | 河南省锅炉压力容器安全检测研究院 | Device for preventing high-temperature corrosion of heating surface of waste incineration boiler |
| CN114484463B (en) * | 2022-01-17 | 2022-09-02 | 河南省锅炉压力容器安全检测研究院 | Device for preventing high-temperature corrosion of heating surface of waste incineration boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203442801U (en) | Wall closing wind device for preventing high temperature corrosion of water wall of side wall of spiral opposed firing boiler | |
| CN102042605B (en) | Side-to-side thermal deashing method for rotary air preheater | |
| CN101706110A (en) | Near-wall air device for preventing high-temperature corrosion of water-cooled wall of power station boiler | |
| CN104676620A (en) | Flue gas processing system and flue gas processing method capable of enabling low-low temperature electrostatic precipitation to be combined with water pollination type GGH (Gas Gas Heater) | |
| US20070044693A1 (en) | Process for improving operation of large-scale combustors | |
| CN108686505A (en) | A kind of flue gases of cock oven low temperature SCR denitration and waste heat recovery integrated apparatus and technique | |
| CN111306568A (en) | Device and method for relieving blockage of rotary air preheater by preheating heat storage element through hot air | |
| CN110500601A (en) | The method that processing SCR denitration the escaping of ammonia is excessive, air preheater blocks | |
| CN206755199U (en) | A kind of sootblower arrangement | |
| CN203744275U (en) | Gas pulse soot blower | |
| CN208975539U (en) | A kind of flue gases of cock oven low temperature SCR denitration and waste heat recycle integrated apparatus | |
| CN204897403U (en) | A indirect waste heat device of no energy loss safety for flue gas relieving haperacidity | |
| CN212430928U (en) | Device for relieving blockage of rotary air preheater by preheating heat storage element through hot air | |
| CN205332235U (en) | Sulfur recovery waste heat utilization tail gas treatment combination unit | |
| CN205065771U (en) | Directly blow high -efficient blast proof stove cigarette of formula coal pulverizer and mix fever device | |
| CN106765035A (en) | Improve SCR temperature of reactor system and device and method | |
| CN102829482B (en) | The adherent wind adding set of a kind of Opposite Firing Boiler side wall | |
| CN113623677B (en) | Flue gas waste heat recovery device for coal-fired boiler | |
| CN202057204U (en) | Waste gas desulfuration and dust control device of carbon calcining furnace | |
| CN216619874U (en) | Device for preventing boiler from low-temperature corrosion of flue gas | |
| CN210398858U (en) | Dew point corrosion prevention waste heat recovery system | |
| CN219494145U (en) | Device for adjusting temperature of flue gas at inlet of SCR (selective catalytic reduction) reactor | |
| CN214664564U (en) | Connecting device of smoke and air combined circulating pipeline of coal-fired power plant | |
| CN214974859U (en) | Improved generation ferronickel electrostatic precipitator casing | |
| CN211246086U (en) | Wet desulphurization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: Shandong Electric Power Research Institute Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee before: State Grid Corporation of China Patentee before: Shandong Electric Power Research Institute |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220216 Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: Shandong Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |