CN202762305U - Lime/limestone wet desulfurization tower slurry flow field guide device - Google Patents
Lime/limestone wet desulfurization tower slurry flow field guide device Download PDFInfo
- Publication number
- CN202762305U CN202762305U CN 201220497370 CN201220497370U CN202762305U CN 202762305 U CN202762305 U CN 202762305U CN 201220497370 CN201220497370 CN 201220497370 CN 201220497370 U CN201220497370 U CN 201220497370U CN 202762305 U CN202762305 U CN 202762305U
- Authority
- CN
- China
- Prior art keywords
- lime
- tower
- flow field
- circular cone
- cone
- 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
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a lime/limestone wet desulfurization tower slurry flow field guide device, belongs to special devices for wet desulfurization towers, and particularly relates to a slurry flow guide device for changing the flow field of slurry. The lime/limestone wet desulfurization tower slurry flow field guide device is characterized in that a circular cone with a regularly triangular section is mounted on the central axis of a bottom plate of a circular desulfurization tower and welded with the bottom plate of the desulfurization tower, a hole is arranged at the center of a tower bottom connected with the circular cone, and the diameter of the hole is at least 30mm smaller than the inner diameter of a cone bottom. By the aid of the guide device, the flow state of the flow field of the slurry at the bottom of the wet desulfurization tower can be changed without increasing any energy consumption, deposition of gypsum in a central area of the tower bottom is avoided, oxidation reaction efficiency is improved, power and electricity consumption of an oxidation air blower and a side stirrer are reduced, and the guide device is maintenance-free in operation.
Description
Technical field
The utility model belongs to the isolated plant of wet desulfuration tower, provides the device of slurry stream action-oriented in particular for changing the slurries flow field.
Background technology
According to the industry statistic data, national thermoelectricity desulfurizing machine kludge capacity is 5.78 hundred million kilowatts, and the fired power generating unit more than 82%, 30 ten thousand kilowatt that accounts for whole fired power generating unit almost all adopts lime/lime stone-gypsum wet sulfur removal technology; Steel sintering machine flue gas desulfurization facility accumulative total is built up 36% of more than 340 cover sintering machine number of units of operation, and wherein approximately the flue gas of sintering machine facility of 75-80% has adopted lime/lime stone-gypsum wet sulfur removal technology.
The evolution that large-scale power station coal burning flue gas desulfurization technology has experienced more than 30 year in China, the flue gas desulfurization technique that has dropped into have tens kinds.Some sulfur removal technologies progressively withdraw from and eliminate owing to technology and reason economically, and some advanced sulfur removal technologies constantly improve along with the development of technology, and there has been very large improvement desulfurization degree, operational reliability and cost aspect.The lime/lime stone wet flue gas desulfurizer is the thermoelectricity of generally acknowledging in the world at present, the flue gas desulfur device that the iron and steel domain commercial applications is largest, desulfuration efficiency is the highest, technology is the most ripe.
The core key device of lime/lime stone-gypsum wet desulfurizing technology system is desulfuration absorbing tower.The absorption tower is columnar structured, and the bottom is flat, is fixed on the basis with foundation bolt, and tower body is welded by ordinary carbon steel plate (Q235-B), and inner surface adopts vinylite glass flake (FRP) inside lining anti-corrosive.Different according to the function of finishing, the space is divided oxidation reaction zone, atomizing spray uptake zone from bottom to top, is removed fog-zone three parts in the tower.
General design and the operation principle of oxidation reaction zone are: zoneofoxidation (slurry pool) is collected and is stored desulfurization slurry in the desulfuration absorbing tower bottom.Uniform three or four agitators on the tower wall of tower bottom slurry pool accelerate the oxidation reaction of slurries, prevent the slurries precipitation.Behind the spray washing, the direct product calcium sulfite of desulfurization is stirred device in zoneofoxidation and becomes calcium sulfate with air gun combined type forced oxidation device (ALS) forced oxidation, with CaSO
42H
2The form of O crystallizes out, and the required air of oxidation reaction is blasted outside tower in the oxidation pond of bottom in the tower by special oxidation fan system.For guaranteeing that oxidation reaction is abundant, improve desulfuration efficiency, the slurries that are stored in the oxidation pond are transported to shower again by circulating pump, form the circulation of slurries, and when containing sulfur dioxide flue gas and contacting with the lime stone slurry droplet, sulfur dioxide is absorbed.Most of impurity such as the CL.F in the flue gas and dust also are removed in the absorption tower.The absorption slurries that contain gypsum, dust and impurity partly are discharged into gypsum dehydration system, also constantly have fresh slurries to replenish into equilibrium density and pH value from pulping system simultaneously.
Yet with regard at present domestic and international prior art, oxidation reaction zone slurries flow field, fluidised form, the flow direction are used for many years tradition stirring, unordered mixing, unordered flowing and oxidation air straight line upwelling field technology form of expression in waiting liquid level space always.This flow field technology form of expression exists three large technical barriers to fail to solve for many years always.One be generally acknowledge at the bottom of the absorption tower, although there is agitator to stir, but still have " dead band ", cause the gypsum deposition.The secondth: the equivalent oxidation air is waiting the L-type straight line rising of liquid level space to discharge liquid level in the pond, and the time of staying is short, and efficiency is low.The 3rd is: vortex physical presence (the major diameter tower is more obvious), and serum density compactness is poor, and the oxidation air reaction rate is unbalanced.Along with country to the further raising of environmental requirement and the people further understanding to green technology, the operation long time stability, sync rates is high, the accessory substance quality is high, can fully utilize, not increase energy resource consumption, energy-conserving and environment-protective new technology, the new method that can solve root problem are demanded urgently breaking through.
The utility model content
In order to overcome " dead band " gypsum deposition and the low deficiency of efficiency that eddy current causes at the bottom of the existing tower, the utility model provides a kind of lime/lime stone wet desulfuration tower slurry flow field guider, this lime/lime stone wet desulphurization slurries flow field guider changes wet desulphurization tower bottom slurry stream field flow attitude in the situation that do not increase any energy consumption, the center gypsum deposits at the bottom of having solved tower, improved efficiency, and power and the power consumption of oxidation fan and side agitator, freedom from repairs in service have been reduced.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of lime/lime stone wet desulfuration tower slurries flow field guider, it is characterized in that: in round desulfurizing tower base plate axis the circular cone that the cross section is equilateral triangle is installed, circular cone and the welding of desulfurizing tower base plate, with center drilling at the bottom of the tower that circular cone is connected, opening diameter is less than cone end interior diameter 30mm at least.
Described circular cone is welded to form with the guiding cone that is positioned at hypomere by the guide cone cap of the section of being located thereon.
The guiding cone inside of described circular cone is provided with the vertical well cabinet frame made from angle steel, and the well cabinet frame length of side is 1/3rd of conical lower port diameter, well cabinet frame bottom transverse brace summer and mount holder angle steel level connection joint.
The equal lining of described circular cone inside and outside wall has the alicyclic vinyl glass flake of thickness 〉=2.5mm.
Described vertical well cabinet frame bottom is the bottom cross beam that is connected with mount holder, and the top is angle ring suitable for reading, is supported by four jiaos of columns of angles between bottom cross beam and the angle ring suitable for reading, and four jiaos of column of angles middle parts are provided with the middle part angle ring.
The beneficial effects of the utility model are: need not change other structures of tower body, need not change original side stirs and the oxidative system installation site, cross section of satisfying " five elements " condition of axis base plate fabrication and installation is the conical guides of equilateral triangle in tower, will make for many years the basic change of traditional lime/lime stone wet desulfuration tower slurry pool flow field generation matter both at home and abroad.When moving without guider, slurries are under the common thrust agitaion of side agitator in the pond, radiation area washes away tower bottom sediments gypsum to only have the liquid of releasing along agitator axis direction to flow linearly, center 3-5m diameter range internal cause agitator power and stirring thrust can't form to wash away at all and vitalize at the bottom of the tower, and between each side agitator at the bottom of the tower rim area and propeller-blade rear also flow because of unordered, inorganization, can't realize washing away vitalizing, form the deposition dead band.And adopt this conical guides when operation, stir under the thrust at identical agitator in the slurry pool, eliminated the center unordered, inorganization flow field flowing environment, the eddy current fluidised form of slurries is become the current stabilization fluidised form, stir motive force under the same function, discharge in a organized way by disperseing to discharge to become in the same way, having formed the whole uniform flow in slurry pool inner bottom part endless belt evenly washes away, and the precipitation gypsum that is formed by centrifugal action circumferentially circulates along the guide cone wall under the certain flow rate effect and takes away, even also can not cause base plate endless belt precipitation after bulky grain sediment gravity sinks heaps, because the characteristics of conical guides maximum are exactly it, and the flow velocity of slurry pool inner bottom part formation is high, and raise with liquid level, flow velocity slows down.Simultaneously, the hoop that forms because of conical guides flows and again blade thrust is smashed oxidation air after the ejection and risen by straight line and change into spiral and rise, slow down oxidation air and overflowed the liquid level time, improved with the oxidation air reaction efficiency 3-5 in the rising of slurries spiral doubly, optimized the dehydrated gypsum quality.Also have slurries internal circulating load minimizing in the tower, equivalent oxidation air utilization rate improves, and energy-saving effect is obvious.The second largest characteristics of this conical guides are installed self exactly without any need for energy consumption, just make it the flow field and send out change, have solved " dead band " deposition, have realized operation steady in a long-term, install self without maintenance, and the life-span is long.
Description of drawings
Fig. 1 is structural representation of the present utility model,
Fig. 2 is that the utility model is installed in the schematic diagram in the desulfurizing tower.
Among the figure: 1. desulfurizing tower chimney, 2. tower cap, 3. two layers of demist, 4. desulfurization tower body, 5. three layers of spray, 6. gas approach, 7. slurry pool, 8. oxidation air pipe, 9. flow field guider, 91. guiding cones, 92. the guide cone cap, 93. vertical well cabinet frames, 931. angle rings suitable for reading, 932. the middle part angle ring, 933. four jiaos of columns of angles, 934. bottom cross beams, 10. side agitator, 11. tower base plates, 12. mount holders.
The specific embodiment
The specific embodiment of the present utility model is, as shown in the figure:
Embodiment 1, a kind of lime/lime stone wet desulfuration tower slurries flow field guider, round desulfurizing tower is by the desulfurizing tower chimney 1 that links to each other successively from top to bottom, tower cap 2, desulfurization tower body 4, tower base plate 11, mount holder 12 forms, desulfurization tower body inside is provided with two layers of demist 3 from top to bottom successively, three layers of spray 5, slurry pool 7, desulfurization tower body one side on slurry pool top is provided with gas approach 6, be provided with the side agitator 10 that oxidation air pipe 8 and circle square are arranged in the slurry pool, the structure of guider is: in round desulfurizing tower base plate axis the circular cone that the cross section is equilateral triangle is installed, circular cone and the welding of desulfurizing tower base plate, with center drilling at the bottom of the tower that circular cone is connected, opening diameter is less than cone end interior diameter 30mm at least.
Claims (5)
1. lime/lime stone wet desulfuration tower slurries flow field guider, it is characterized in that: in round desulfurizing tower base plate axis the circular cone that the cross section is equilateral triangle is installed, circular cone and the welding of desulfurizing tower base plate, with center drilling at the bottom of the tower that circular cone is connected, opening diameter is less than cone end interior diameter 30mm at least.
2. lime/lime stone wet desulfuration tower slurries according to claim 1 flow field guider is characterized in that: described circular cone is welded to form by the guide cone cap of the section of being located thereon and the guiding cone that is positioned at hypomere.
3. lime/lime stone wet desulfuration tower slurries according to claim 1 and 2 flow field guider, it is characterized in that: the guiding cone inside of described circular cone is provided with the vertical well cabinet frame made from angle steel, the well cabinet frame length of side is 1/3rd of conical lower port diameter, well cabinet frame bottom transverse brace summer and mount holder angle steel level connection joint.
4. lime/lime stone wet desulfuration tower slurries according to claim 1 flow field guider, it is characterized in that: the equal lining of described circular cone inside and outside wall has the alicyclic vinyl glass flake of thickness 〉=2.5mm.
5. lime/lime stone wet desulfuration tower slurries according to claim 3 flow field guider, it is characterized in that: the bottom cross beam of described vertical well cabinet frame bottom for being connected with mount holder, the top is angle ring suitable for reading, supported by four jiaos of columns of angles between bottom cross beam and the angle ring suitable for reading, four jiaos of column of angles middle parts are provided with the middle part angle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220497370 CN202762305U (en) | 2012-09-26 | 2012-09-26 | Lime/limestone wet desulfurization tower slurry flow field guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220497370 CN202762305U (en) | 2012-09-26 | 2012-09-26 | Lime/limestone wet desulfurization tower slurry flow field guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202762305U true CN202762305U (en) | 2013-03-06 |
Family
ID=47768909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220497370 Expired - Lifetime CN202762305U (en) | 2012-09-26 | 2012-09-26 | Lime/limestone wet desulfurization tower slurry flow field guide device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202762305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872711A (en) * | 2012-09-26 | 2013-01-16 | 山东国舜建设集团有限公司 | Guiding device for slurry flow field in lime/limestone wet desulphurization tower |
-
2012
- 2012-09-26 CN CN 201220497370 patent/CN202762305U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872711A (en) * | 2012-09-26 | 2013-01-16 | 山东国舜建设集团有限公司 | Guiding device for slurry flow field in lime/limestone wet desulphurization tower |
| CN102872711B (en) * | 2012-09-26 | 2014-09-17 | 山东国舜建设集团有限公司 | Guiding device for slurry flow field in lime/limestone wet desulphurization tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102872712B (en) | Semi-dry-process desulfurization apparatus | |
| CN205462756U (en) | Counterattack formula annular space sprays stirring formula flotation device of breathing in | |
| CN201193209Y (en) | Internal circulating anaerobic reactor | |
| CN201208542Y (en) | Desulfuration spray tower with load regulation and flue gas flow equalizing function | |
| CN102872711B (en) | Guiding device for slurry flow field in lime/limestone wet desulphurization tower | |
| CN103191636A (en) | Desulfurizing tower device | |
| CN202844869U (en) | Desulfurization equipment adopting semi-dry method | |
| CN101474532A (en) | Self-circulation jet agitation device for slurry in flue gas desulfurization slurry pool | |
| CN202762305U (en) | Lime/limestone wet desulfurization tower slurry flow field guide device | |
| CN204247065U (en) | Single tower Two-way Cycle wet flue gas desulfurization tower cascade type liquid collector | |
| CN204412060U (en) | A kind of double fluid is to high efficiency lower resistance desulfurizing tower | |
| CN208983905U (en) | A kind of packed bed regenerative apparatus | |
| CN106000065A (en) | Multilayer dished liquid collector used in single-column dual-cycle flue gas desulfurization process | |
| CN203321046U (en) | Large fluidization warehouse with vertical column | |
| CN204121959U (en) | A kind of desulfurizing tower based on spinning disk desulfurization method | |
| CN102371117A (en) | Venturi tube capable of changing sectional area and CFB absorbing tower thereof | |
| CN102228781B (en) | SDFGD (semi-dry flue gas desulfurization) device | |
| CN201756468U (en) | Waste water treatment device with deep well aeration process | |
| CN102531000A (en) | Non-cold carbonizer for preparing sodium bicarbonate | |
| CN202173875U (en) | Ammonia flue gas desulfurization device | |
| CN202449866U (en) | Non-cold carbonizing tower for preparing sodium hydrogen carbonate | |
| CN206315669U (en) | The flue gas even distribution and desulfurization intensifying device of wet desulphurization absorption tower | |
| CN206304673U (en) | Fluorescent material agitating device | |
| CN205635585U (en) | A methane -generating pit for chinampa base on water | |
| CN215233282U (en) | Wet flue gas desulfurization major diameter single tower whirl system of thermal power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |