CN100484610C - Technique for preventing deposition of entrance flue way of wet-type desulfuration tower - Google Patents
Technique for preventing deposition of entrance flue way of wet-type desulfuration tower Download PDFInfo
- Publication number
- CN100484610C CN100484610C CNB2006100532598A CN200610053259A CN100484610C CN 100484610 C CN100484610 C CN 100484610C CN B2006100532598 A CNB2006100532598 A CN B2006100532598A CN 200610053259 A CN200610053259 A CN 200610053259A CN 100484610 C CN100484610 C CN 100484610C
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- tower
- inlet region
- inlet
- flue
- 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
Landscapes
- Treating Waste Gases (AREA)
Abstract
A method for avoiding scale at the inlet smoke channel of wet desulfuration tower arranges a smoke channel with preset length-width ratio and incline degree at the inlet area of an adsorption tower, arranges a wide-angle injector surround the wall of tower, and arranges a cover plate with diverting and airflow distribution strengthen function at the upper end of the adsorption tower, while the invention also limits the smoke speed at the inlet area, therefore, the invention can effectively avoid scale in the smoke channel of wet desulfuration tower.
Description
Technical field
The present invention relates to the flue gas desulfurization technique of coal fired power plant, especially a kind of technology that can prevent deposition of entrance flue way of wet-type desulfuration tower.
Background technology
There is the defective of some technologies in nucleus equipment---the absorption tower of wet type lime stone flue gas desulfurization technique at the absorption tower entrance, as: contain SO from what boiler came out
2The unsaturation flue gas, enter absorption tower when inlet through former flue gas flue, forms a dried interface zone that wets when contacting with the circulation cleaning slurries that sprays in the absorption tower (the washing slurries that contain lime stone and gypsum).In the wet fuel gas desulfurizing technology system of no heat exchanger arrangement, the former flue-gas temperature of absorption tower inlet is usually between 110-145 ℃, in the wet fuel gas desulfurizing technology system of heat exchanger arrangement was arranged, the former flue-gas temperature of absorption tower inlet was usually between 90-110 ℃.Do wet interface zone at this, former flue-gas temperature is with respect to (the saturation temperature of flue gas of the temperature in the absorption tower, usually between 40-55 ℃) be higher, when former flue gas when dry environment changes wet environment over to, contain the rapid evaporate to dryness of circulation cleaning slurries quilt on flue that enters the mouth on the absorption tower under the effect of hot flue gas and tower wall of lime stone and gypsum, be easy to form solid deposits (being commonly called as fouling).Moreover, the SO in former flue gas
2And O
2When content was higher, the calcium sulfite oxidation in the sediment more thoroughly formed gypsum, thereby formed very hard duricrust solid deposits.The accumulation of solid deposits (being commonly called as fouling) can cause following problem; 1) increased the flue gas resistance of inlet region, absorption tower, increased the power consumption of booster fan (or air-introduced machine), thereby caused the increase of operating cost; 2) flue gas stream of having destroyed the inlet region, absorption tower distributes, and has caused can not evenly distributing of uptake zone air-flow, thereby has caused SO
2The reduction of removal efficiency; 3) solid deposits (fouling) has been aggravated the corrosion of inlet region flue and near tower wall, has reduced the service life of material, and material is had higher requirement; 4) reduced the reliability of system's operation/operation.
Summary of the invention
For overcoming the existing defective of above-mentioned existing technology, the invention provides a kind of technology that prevents the fouling of wet type desulfurizing tower inlet, adopt this technology can reduce the crushing of wet type limestone-based process flue gas desulphurization system, the operating cost of reduction system, the removal efficiency of the SO2 of raising system, prolong the service life of material, reduce the workload of the maintenance/maintenance of system, improve the reliability of the operation/operation of system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of technology that prevents the fouling of wet type desulfurizing tower inlet, and the top cover in the inlet region, absorption tower to shape, inclination angle, nozzle and the inside, absorption tower of flue designs; The former flue gas flow rate of inlet region, absorption tower is in the 15.5m/s, the diameter on absorption tower compares D:H=0.5-0.9 with the width of inlet region, absorption tower, inlet region, absorption tower inclination angle beta=4 °-28 °, the upper end of the gas approach of inlet region, absorption tower is provided with a top cover, between the scope of the choosing α of top cover tilt angle alpha=35 °-55 °, row's wide-angle nozzle is arranged in the inlet region, absorption tower within the peripheral 1m of tower wall.The inlet region, absorption tower, flue adopts the design at rational Aspect Ratio and angle of inclination, and flue gas carried out flow restriction, dwindle the zone of doing wet interface that the inlet region, absorption tower exists, a certain amount of circulation cleaning slurries of carrying under one's arms when preventing oppositely to pour in down a chimney the inlet region because of flue gas form solid deposits to the inlet region; Former gas approach adds a top and has water conservancy diversion and add the top cover that air blast distributes by the upper end of the inner side in absorption tower; One section design of adopting special material from the peripheral 1m of tower wall; In the design of tower wall peripheral disposition one row's wide-angle nozzle, flue-gas temperature falls in the angle of arranging pre-spray, limits the motion momentum of former flue gas and cleans the inlet region flue, prevents the accumulation of solid deposits on the flue of inlet region; With interior flue, begin flue is carried out the design of high-temperature resistant anti-corrosive from the nearly 5m in inlet region, absorption tower.
The invention has the beneficial effects as follows to have succinct technological process, effectively prevent the fouling of wet type desulfurizing tower flue, thereby reduce operating cost, the raising SO of system of system
2Removal efficiency, prolong service life of material, reduce the workload of the maintenance/maintenance of system, the reliability of the operation/operation of raising system.
Description of drawings
Fig. 1 is a structural design schematic diagram of the present invention;
Fig. 2 is a structural design vertical view of the present invention,
Fig. 3 cap structure design diagram of the present invention
Among the figure: 1, absorb the Tata wall, 2, gas approach, 3 inlet regions, 4, nozzle, 5, stub (tube), 6, top cover.
The specific embodiment
In conjunction with the accompanying drawings a kind of design technology of wet type desulfurizing tower inlet fouling that prevents of the present invention is described in further detail:
1) correctly choose the flow velocity of determining inlet region, absorption tower 3 flue gases:
Among Fig. 1.The flue gas stream state in spray district, absorption tower is by the design decision of inlet region, absorption tower 3.The mobile momentum of tobacco curing gas exceeds, and when preventing that flue gas stream from impacting the opposite and absorb a certain amount of circulation cleaning slurries of carrying under one's arms when inlet region 3 is carried out in Tata wall 1 back because of flue gas oppositely pours in down a chimney to inlet region 3, on the flue of inlet region 3, form solid deposits, guarantee that simultaneously air-flow enters steady deflection when spraying the district, the former flue gas flow rate of inlet region, absorption tower is defined as 15.5m/s, and promptly the Peak Flow Rate of v is taken as 15.5m/s.
2) correctly choose the when rational angle of inclination of the length and width of determining inlet region, absorption tower 3:
Among Fig. 2.After making former flue gas enter the absorption tower from inlet region, absorption tower 3, deflection stably enters the spray uptake zone rapidly, forms uniform airflow and distribute on the cross section in absorption tower spray district.The width of the diameter on absorption tower and inlet region, absorption tower 3 is than D:H=0.5-0.9, according to different absorption tower diameters, and the choosing between range beta=4 °-28 ° of inlet region, absorption tower 3 inclination angle beta.
3) inlet region, absorption tower 3, and gas approach adds the design of a top cover 6 by the upper end of the inner side in absorption tower;
Among Fig. 3.In inlet region, absorption tower 3, do not have contact area between the humidity and dry environment for making on the tower wall.For this reason, the upper end of gas approach has added a top cover 6, and this can make the liquid lamella that flows down along tower wall 1 flow to the central authorities on absorption tower.Between the scope of the choosing α of top cover 6 tilt angle alpha=35 °-55 °.Track when liquid falls is parabola shaped, and can contact tower wall 1.Simultaneously, because cover plate has only blocked flue gas stream half, the flue gas of gas approach the first half is accelerated.So just formed the upper airflow diversion that freely recycles that can not flake.
Stub (tube) 5 on smoke inlet 3 and the tower wall 1 is integrated.Correspondingly, sidewall is extended to the top board at two ends up and down, and the interior zone that enters the absorption tower until them is under the effect at sidewall inclination angle, and the flue gas in tower wall 1 zone can separate effectively with cleaning solution.
4) inlet region, absorption tower 3, from one section design of adopting special material of tower wall 1 peripheral 1m;
Among Fig. 2, the working environment of disliking gesture in the wet interface zone is done in rising of being that the material that makes inlet region, absorption tower 3 can stand, inlet region, absorption tower 3, and must select alloy designations for use from one section the material of tower wall 1 peripheral 1m is material more than 926.
5) design of row's wide-angle nozzle 4 within tower wall 1 peripheral 1m, is arranged in inlet region, absorption tower;
Among Fig. 1,, limit the motion momentum of former flue gas and clean inlet region 3 flues, prevent the accumulation of solid deposits on the flue of inlet region 3, arrange row's wide-angle nozzle 4 in order to fall flue-gas temperature.The quantity of nozzle 4 is on the size (length and width are decided) of inlet region, and the pressure of nozzle 4 is not less than 2bar.
6) 3 nearly 5m begin flue is carried out the design of high-temperature resistant anti-corrosive with interior flue from the inlet region, absorption tower.
Among Fig. 1, for prevent that wet desulfurization system from starting, during load variations, the flue that the moisture the absorption tower in carries out inlet region 3 causes the boiler flue corrosion aggravation, so need are to 3 nearly 5m begin flue is carried out the design of high-temperature resistant anti-corrosive with interior flue from the inlet region, absorption tower.
Claims (2)
1. technology that prevents the fouling of wet type desulfurizing tower inlet is characterized in that: the top cover in the inlet region, absorption tower to shape, inclination angle, nozzle and the inside, absorption tower of flue designs; The former flue gas flow rate of inlet region, absorption tower is in the 15.5m/s, the diameter on absorption tower compares D:H=0.5-0.9 with the width of inlet region, absorption tower, inlet region, absorption tower inclination angle beta=4 °-28 °, the upper end of the gas approach of inlet region, absorption tower is provided with a top cover, between the scope of the choosing α of top cover tilt angle alpha=35 °-55 °, row's wide-angle nozzle is arranged in the inlet region, absorption tower within the peripheral 1m of tower wall.
2. a kind of technology that prevents the fouling of wet type desulfurizing tower inlet as claimed in claim 1, it is characterized in that: the pressure of nozzle medium is not less than 2bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100532598A CN100484610C (en) | 2006-09-04 | 2006-09-04 | Technique for preventing deposition of entrance flue way of wet-type desulfuration tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100532598A CN100484610C (en) | 2006-09-04 | 2006-09-04 | Technique for preventing deposition of entrance flue way of wet-type desulfuration tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101015769A CN101015769A (en) | 2007-08-15 |
| CN100484610C true CN100484610C (en) | 2009-05-06 |
Family
ID=38725088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100532598A Active CN100484610C (en) | 2006-09-04 | 2006-09-04 | Technique for preventing deposition of entrance flue way of wet-type desulfuration tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100484610C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972575A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Guide waterproof device of washing tower inlet |
| US20140112834A1 (en) * | 2012-10-23 | 2014-04-24 | Babcock & Wilcox Power Generation Group, Inc. | System and method for controlling scale build-up in a wfgd |
| CN103028319A (en) * | 2012-11-23 | 2013-04-10 | 广东依科电力技术有限公司 | Smoke inlet of desulfurizing tower |
| CN108543407A (en) * | 2018-04-16 | 2018-09-18 | 哈尔滨理工大学 | Boiler flue gas purification desulfurizer |
| CN110075689A (en) * | 2019-05-24 | 2019-08-02 | 湖南省湘衡盐化有限责任公司 | A kind of device preventing desulphurization system inlet flue duct fouling |
-
2006
- 2006-09-04 CN CNB2006100532598A patent/CN100484610C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101015769A (en) | 2007-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103316553B (en) | Efficient wet-type variable flow fog-spraying sprinkling dust-removing purification device | |
| CN100484610C (en) | Technique for preventing deposition of entrance flue way of wet-type desulfuration tower | |
| CN101844037A (en) | Tower for flue gas desulfurization in homogeneous air-humidifying method | |
| CN101439259B (en) | Honeycomb-shaped Venturi dedusting and desulphurization washer | |
| CN102266718B (en) | Semi dry process flue gas desulfurization method of circulating fluidized bed based on circulation, and apparatus thereof | |
| CN205495311U (en) | Flue gas ozone oxidation SOx/NOx control system | |
| CN201445885U (en) | Desulfuration and dedusting device | |
| CN103191636A (en) | Desulfurizing tower device | |
| CN201389423Y (en) | Flue gas desulphurization dust removing tower for coal burning boiler | |
| CN205084619U (en) | System for sulfur trioxide in coal -fired flue gas of desorption power plant | |
| CN202506310U (en) | Garbage-incinerated flue gas purification-combined deacidification system | |
| CN201551961U (en) | Ammonia flue gas desulfurization tower | |
| CN201154291Y (en) | Biphase rectification flue-gas desulfurizing device | |
| CN104826471A (en) | Industrial boiler flow-guide-plate-type glass fiber reinforced plastic flue gas desulfuration column | |
| CN201832522U (en) | Novel wet-type desulphurization dust removal absorption tower | |
| CN102500220B (en) | Dust-removal and desulphurization device for negative pressure running boiler | |
| CN201094897Y (en) | Flue gas adjutage | |
| CN206660858U (en) | A kind of producing gas blower chimney cyclon dust collector device | |
| CN209263734U (en) | A kind of desulfurization slurry heat exchanger | |
| CN110575738B (en) | Comprehensive dehydration method for wet flue gas | |
| CN207385164U (en) | Homogenizing is oriented to turbulent flue gas desulfurization ultrapurification plant | |
| CN204485617U (en) | There is the absorption tower of large diameter double feed inlet multi-drop gas distributor | |
| CN204429075U (en) | Industrial Boiler water conservancy diversion template fiberglass desulfurization cigarette tower | |
| CN109443055A (en) | A kind of desulfurization slurry heat exchanger | |
| CN114560519B (en) | Coal fired power plant flue gas desulfurization waste water evaporation tower |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Feida Desulfuration Engineering Co., Ltd. Assignor: Zhejiang Feida Environmental Science & Technology Co., Ltd. Contract record no.: 2011330001030 Denomination of invention: Technique for preventing deposition of entrance flue way of wet-type desulfuration tower Granted publication date: 20090506 License type: Exclusive License Open date: 20070815 Record date: 20110729 |