CN203704004U - Wet desulphurization gypsum rain or chimney elimination apparatus - Google Patents
Wet desulphurization gypsum rain or chimney elimination apparatus Download PDFInfo
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- CN203704004U CN203704004U CN201320456557.7U CN201320456557U CN203704004U CN 203704004 U CN203704004 U CN 203704004U CN 201320456557 U CN201320456557 U CN 201320456557U CN 203704004 U CN203704004 U CN 203704004U
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- chimney
- liquid collecting
- rain
- liquid
- flue gas
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Abstract
The utility model relates to a wet desulphurization gypsum rain or chimney elimination apparatus. Over a flue gas inlet of a chimney and under a flue gas outlet of the chimney are respectively provided a V-shaped liquid collecting ring; an included angle (Alpha) no less than 70-degree and no more than 600-degree is formed between each V-shaped liquid collecting ring and a horizontal direction; an opening is formed on the bottom end of the V-shaped liquid collecting ring; a liquid collecting groove is connected under the opening; the V-shaped liquid collecting ring is a V-shaped groove; an included angle (Theta) of the V-shaped groove is no less than 300-degree and no more than 900-degree; the liquid collecting groove is connected with a chimney condensate liquid discharging port via a drainage pipe on the inner wall or the external wall of the chimney; the bottom end of the drainage pipe is provided with a liquid cap; with the V-shaped liquid collecting rings and the liquid collecting grooves respectively over the flue gas inlet of the chimney and under the flue gas outlet of the chimney, gypsum rain or chimney rain going up and down along the inner wall of the chimney can be introduced to the liquid collecting grooves via the liquid collecting rings and then drained out from the liquid collecting groove via the drainage pipe; and the liquid affluxes into the chimney condensate liquid and then is discharged out. The wet desulphurization gypsum rain or chimney elimination apparatus is simply structured and can effectively eliminate gypsum rain or chimney rain with little cost and nearly without increasing system resistance.
Description
Technical field
The utility model relates to a kind of device of eliminating chimney gypsum rain or chimney rain, and particularly one does not adopt GGH(gas-to-gas heat exchanger) the chimney of wet process of FGD.
Background technology
In the deacidifying flue gas system of wet desulfurization of flue gas by limestone-gypsum method or some other techniques, the flue-gas temperature after absorption tower purifies is generally at 45～55 ℃, containing saturated vapor, SO
2and SO
3deng, easily condensation produces corrosive sulfuric acid, sulfurous acid solution, absorption tower rear pass and chimney are had to very strong corrosivity, early stage desulphurization system of building arranges GGH(gas-to-gas heat exchanger mostly) utilize the former flue gas of high temperature that clean flue gas is arrived more than>=80 ℃, thereby suppress the generation of acid condensate liquid, solve the Anticorrosion of absorption tower rear pass and chimney, improve plume rise effective depth, reduce and land Pollutant emission concentration near chimney.But arrange after GGH, be in operation and also produced a lot of problems:
1.GGH seals the bad former smoke spillage that causes, and is to guarantee desulfuration efficiency, and needing increases liquid-gas ratio, and power consumption is increased.
2. for preventing that GGH from stopping up, need often rinse at present, flushing water enters in absorption tower, and frequent flushing not only makes the external water yield of system increase, and desulphurization system water balance is wayward, and can aggravate the corrosion to GGH.GGH stops up and must stop desulfurizer when serious and carry out artificial on-line rinsing.
3.GGH makes flue gas system resistance increase about 1000Pa, and when obstruction, resistance increment is larger, and system power consumption increases; Moreover also can make expansion joint load strengthen, and easily leak, when serious, cause damaging;
Mostly cancelled GGH for the operational reliability and the economy later stage desulfurizing item that improve unit, chimney adopts inside lining anti-corrosive material, forms the scheme of " wet chimney " discharge.But also produce series of problems:
Exhaust gas temperature is down to 45～55 ℃, and easily in flue and chimney, condensation produces corrosive sulfuric acid, sulfurous acid solution, and flue and chimney are had to very strong corrosivity.
Cancel after GGH, because exhaust gas temperature is low, the effective rising height of flue gas reduces, can near chimney, form " gypsum rain " or " chimney rain " phenomenon, increase the flooring concentration of flue gas pollutant at chimney near zone, long-term operation can cause plant area, near enterprise, house owed by a citizen, good farmland, vegetation etc. to be polluted." gypsum rain " refers to and adopts in wet desulfurization of flue gas by limestone-gypsum method, because containing certain density gypsum in " chimney rain ", be often called " gypsum rain "
The immediate cause of gypsum rain or chimney rain is in flue gas, to have water droplet, its source has: (1) sees through ME(demister) drop carried secretly, this liquid-drop diameter is conventionally at 100～1000 μ m, and minority is greater than 2000 μ m, and its amount is relevant with the factor such as performance, flue gas flow rate of ME.(2) hot saturated flue gas touches colder flue and inner wall of stack has formed condensate (3) owing to being subject to the effect of inertia force, the larger water droplet that flue gas is carried secretly bumps against on flue and chimney wall, and condensate liquid is combined on wall, and be again entrained into flue gas, these liquid-drop diameters of again being taken out of are conventionally between 1000～5000 μ m, and its amount depends on characteristic and the flue gas flow rate of wall.Coarse wall, higher flue gas flow rate increase the amount of carrying secretly.
Summary of the invention
Cancel the gypsum rain that produces after gas-to-gas heat exchanger or the technical problem of chimney rain in order to solve wet process of FGD, the utility model provides a kind of wet desulphurization gypsum rain or chimney rain cancellation element.
For achieving the above object, the technical solution of the utility model is: a kind of wet desulphurization gypsum rain or chimney rain cancellation element, comprise chimney, V-type liquid collecting ring, collecting tank, be characterized in: the smoke inlet top of chimney and the exhanst gas outlet below of chimney arrange respectively V-type liquid collecting ring, and V-type liquid collecting ring is from the horizontal by 7
0≤ α≤60
0angle, the bottom of V-type liquid collecting ring has open ports, is connected to collecting tank below open ports.
The cross section of V-type liquid collecting ring is V-shaped valley shape, the angle 30 of V-shaped valley shape
0≤ θ≤90
0.
Between two liquid collecting rings of the smoke inlet of chimney and the exhanst gas outlet of chimney, set up at least one V-type liquid collecting ring and collecting tank.
Collecting tank connects chimney condensate liquid outlet by the liquid guiding tube being arranged on inner wall of stack or outer wall.
Collecting tank is provided with clear water rinse-system, is provided for monitoring the pressure transmitter whether liquid guiding tube stops up on liquid guiding tube, and liquid guiding tube bottom arranges fluid-tight.
The beneficial effects of the utility model are: by V-type liquid collecting ring and collecting tank being set respectively above the smoke inlet of chimney and below the exhanst gas outlet of chimney, make gypsum rain or the chimney rain of inner wall of stack downlink or uplink introduce collecting tank through liquid collecting ring, utilize liquid guiding tube that liquid is drawn from collecting tank according to on-site actual situations along inner wall of stack or outer wall, import chimney condensate liquid and discharge.
For preventing that liquid guiding tube from stopping up, at collecting tank place, clear water rinse-system is set, regularly liquid guiding tube is rinsed.In wet chimney, be generally malleation, for preventing flue gas escape, in liquid guiding tube bottom, fluid-tight be set.Multiple pressure transmitters are set liquid guiding tube is first-class, whether stop up for monitoring liquid guiding tube.
Therefore, the utility model is simple in structure, in little investment with increase hardly in the resistance situation of system, can effectively eliminate gypsum rain or chimney rain.
Accompanying drawing explanation
Fig. 1 is that structure vertical profile of the present utility model is looked;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is V-type liquid collecting ring and inner wall of stack connection diagram.
The specific embodiment
Below in conjunction with drawings and Examples, utility model is further described.
As shown in Figure 1 to Figure 3, wet desulphurization gypsum rain of the present utility model or chimney rain cancellation element, comprise chimney 1, near chimney breast V-type liquid collecting ring 2, near chimney breast collecting tank 3, upper-part centralized liquid bath liquid guiding tube 4, near chimney entrance V-type liquid collecting ring 5, near chimney entrance collecting tank 6, bottom liquid guiding tube 7, chimney entrance 8, fluid-tight 9, liquid collecting ring 10, chimney wall 13 etc.
Be arranged on apart from 10～20 meters of inner wall of stack 13 of chimney 1 exhanst gas outlet near chimney breast V-type liquid collecting ring 2, be arranged near chimney breast V-type liquid collecting ring 2 belows near chimney breast collecting tank 3, for the liquid producing near chimney breast V-type liquid collecting ring 2; Upper-part centralized liquid bath liquid guiding tube 4 is arranged near on chimney breast collecting tank 3.Be arranged on apart from 10～20 meters of inner wall of stack 13 of chimney 1 smoke inlet near chimney entrance V-type liquid collecting ring 5, be arranged near chimney entrance V-type liquid collecting ring 5 belows near chimney entrance collecting tank 6, for collecting the slurries that produce near chimney entrance V-type liquid collecting ring 5; Bottom collecting tank liquid guiding tube 7 is arranged near on chimney entrance collecting tank 6.
Be connected respectively chimney condensate liquid outlet near chimney breast collecting tank 3 with bottom liquid guiding tube 7 by upper-part centralized liquid bath liquid guiding tube 4 with close chimney entrance collecting tank 6, liquid guiding tube 7 bottoms in bottom arrange fluid-tight 9.On upper-part centralized liquid bath liquid guiding tube 4 and bottom liquid guiding tube 7, multiple pressure transmitters are set, whether stop up for monitoring liquid guiding tube.
(1) at the interface of flue and chimney, flue gas along continuous straight runs is upwards rolled over 90 degree and is entered chimney, due to the effect of inertia force, the water droplet of carrying secretly in flue gas or calcium plaster drip and can hit on chimney wall, form one deck liquid film, when flue gas flow rate exceedes flue gas again when the critical speed of entrained liquids, liquid film can be torn and again be entrained in flue gas, forms gypsum rain or chimney rain.
Based on this origin cause of formation, the present embodiment is approximately 20 meters of above the smoke inlet apart from chimney 1, arrange from the horizontal by 7
0≤ α≤60
0close chimney entrance V-type liquid collecting ring 5, for the liquid film of collecting upwards and flowing downward.Near the angle 30 of chimney entrance V-type liquid collecting ring 5 limit walls and chimney 1 vertical wall
0≤ β≤75
0, be arranged to uncovered form in the bottom near chimney entrance V-type liquid collecting ring 5, and under it, arrange near chimney entrance collecting tank 6, make inner wall of stack downlink or uplink liquid film introduce collecting tank through liquid collecting ring; Utilize liquid guiding tube that liquid is drawn from collecting tank according to on-site actual situations along inner wall of stack or outer wall, import chimney condensate liquid and discharge.
(2) the saturated flue gas temperature in chimney is 45～55 ℃ of left and right, and because environment temperature is low compared with flue-gas temperature, steam can condense on chimney wall, forms liquid film; Moreover, the drop carrying in flue gas, the size of its amount to when the design of demister performance and absorption tower relevant, moving upward in process along chimney, due to the turbulence of flue gas, can impinge upon and stick on wall.When flue gas flow rate exceedes flue gas again when the critical speed of entrained liquids, liquid film can be torn and again be entrained in flue gas, forms gypsum rain or chimney rain.
(3) liquid film of inner wall of stack, according to flue gas flow rates different in chimney, can present the fluidised form that upstream or downstream are different, in order to collect the liquid film of upstream or downstream, liquid collecting ring is arranged to V-shape, and V-shaped valley is collected descending liquid film, and V-shaped valley limit wall and inner wall of stack clip slot are collected up liquid film.V-shaped valley angle 30
0≤ θ≤90
0.
(4), according to the intensity of local climate situation and gypsum rain or chimney rain, can between the smoke inlet of chimney 1 and two liquid collecting rings of outlet, increase one or more liquid collecting rings and collecting tank.
(5) for preventing that liquid guiding tube from stopping up, at collecting tank place, clear water rinse-system is set, regularly liquid guiding tube is rinsed.In wet chimney, be generally malleation, for preventing flue gas escape, in liquid guiding tube bottom, fluid-tight be set.
(6) multiple pressure transmitters are set liquid guiding tube is first-class, whether stop up for monitoring liquid guiding tube.
Claims (5)
1. a wet desulphurization gypsum rain or chimney rain cancellation element, comprise chimney, V-type liquid collecting ring, collecting tank, it is characterized in that: the smoke inlet top of described chimney and the exhanst gas outlet below of chimney arrange respectively V-type liquid collecting ring, and V-type liquid collecting ring is from the horizontal by 7
0≤ α≤60
0angle, the bottom of V-type liquid collecting ring has open ports, is connected to collecting tank below open ports.
2. wet desulphurization gypsum rain according to claim 1 or chimney rain cancellation element, is characterized in that: the cross section of described V-type liquid collecting ring is V-shaped valley shape the angle 30 of V-shaped valley shape
0≤ θ≤90
0.
3. wet desulphurization gypsum rain according to claim 1 or chimney rain cancellation element, is characterized in that: between two liquid collecting rings of the smoke inlet of described chimney and the exhanst gas outlet of chimney, set up at least one V-type liquid collecting ring and collecting tank.
4. wet desulphurization gypsum rain according to claim 1 or chimney rain cancellation element, is characterized in that: described collecting tank connects chimney condensate liquid outlet by the liquid guiding tube being arranged on inner wall of stack or outer wall.
5. wet desulphurization gypsum rain according to claim 4 or chimney rain cancellation element, it is characterized in that: described collecting tank is provided with clear water rinse-system, on liquid guiding tube, be provided for monitoring the pressure transmitter whether liquid guiding tube stops up, liquid guiding tube bottom arranges fluid-tight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456557.7U CN203704004U (en) | 2013-07-30 | 2013-07-30 | Wet desulphurization gypsum rain or chimney elimination apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456557.7U CN203704004U (en) | 2013-07-30 | 2013-07-30 | Wet desulphurization gypsum rain or chimney elimination apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704004U true CN203704004U (en) | 2014-07-09 |
Family
ID=51054439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320456557.7U Expired - Fee Related CN203704004U (en) | 2013-07-30 | 2013-07-30 | Wet desulphurization gypsum rain or chimney elimination apparatus |
Country Status (1)
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|---|---|
| CN (1) | CN203704004U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388829A (en) * | 2013-07-30 | 2013-11-13 | 上海龙越环保科技有限公司 | Eliminator for gypsum rain or stack rain in wet desulphurization system |
| CN104474794A (en) * | 2014-10-14 | 2015-04-01 | 上海迪夫格环境科技有限公司 | Condensate liquid collection device at top end of wet chimney flue gas guide plate |
| CN106122997A (en) * | 2016-08-09 | 2016-11-16 | 北京金汇中电力科技有限公司 | A kind of smoke liquid medium Almightiness type collects exhaust system |
-
2013
- 2013-07-30 CN CN201320456557.7U patent/CN203704004U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388829A (en) * | 2013-07-30 | 2013-11-13 | 上海龙越环保科技有限公司 | Eliminator for gypsum rain or stack rain in wet desulphurization system |
| CN104474794A (en) * | 2014-10-14 | 2015-04-01 | 上海迪夫格环境科技有限公司 | Condensate liquid collection device at top end of wet chimney flue gas guide plate |
| CN104474794B (en) * | 2014-10-14 | 2016-08-17 | 上海迪夫格环境科技有限公司 | A kind of Wet chimney smoke deflector top condensed fluid collection device |
| CN106122997A (en) * | 2016-08-09 | 2016-11-16 | 北京金汇中电力科技有限公司 | A kind of smoke liquid medium Almightiness type collects exhaust system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20210730 |