CN201020339Y - Smoke simultaneity desulfurization denitration integrative double-stage liquid column type absorption reactor - Google Patents
Smoke simultaneity desulfurization denitration integrative double-stage liquid column type absorption reactor Download PDFInfo
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- CN201020339Y CN201020339Y CNU2007200366066U CN200720036606U CN201020339Y CN 201020339 Y CN201020339 Y CN 201020339Y CN U2007200366066 U CNU2007200366066 U CN U2007200366066U CN 200720036606 U CN200720036606 U CN 200720036606U CN 201020339 Y CN201020339 Y CN 201020339Y
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Abstract
The utility model discloses a smoke gas simultaneous desulfation, denitration all-in-one twin-stage liquid column absorbing reactor, which comprises a cylinder body, a first-stage absorbing reactor, a second-stage absorbing reactor, a first-stage gas distributor and a first-stage liquid collecting groove. The first-stage demister is positioned at the upper part of the first-stage reactor; the first-stage liquid column injector is arranged in the lower part of the first-stage absorbing reactor above the first-stage gas separator; the second-stage absorbing reactor is provided with the smoke gas outlet of the second-stage absorbing reactor; the second-stage liquid collection groove is connected with the lower part of the second-stage reactor and the second-stage gas distributor is arranged in the upper part of the second-stage absorbing reactor; the second-stage liquid column injector is positioned in the lower part of the second-stage absorbing reactor; the first-stage demister is connected with the second-stage gas distributor by the passage. Because the first-stage and the second-stage reactors are coupled in the same container, the connection structure of the twin-stage reactor is simplified.
Description
Technical field
The utility model belongs to the technical field of atmospheric environment protection, relates to a kind of flue gas combined desulfurization and denitration device, particularly relates to a kind of integrated twin-stage fluid column of flue gas and desulfurizing and denitrifying formula absorption reactor thermally that utilizes urea/ammoniacal liquor/additive solution.
Technical background
Sulfur dioxide and nitrogen oxide are the bigger gaseous contaminants of influence in the atmosphere pollution, human body, environment and the ecosystem are had very big harm, along with the increasingly stringent of environmental requirement, NO
xAnd SO
2The problem of discharging more and more receives publicity.Sulfur dioxide and nitrogen oxide mainly stem from the combustion process of fossil fuels such as coal, oil, and the fume emission of the roasting of ore, smelting process, wherein various burning boilers particularly power plant boiler smoke evacuation have characteristics such as concentration is low, exhaust gas volumn is big, floating dust is many and are difficult to improvement.In the conventional art, discharging sulfur dioxide in flue gas and purification of nitrogen oxides technology are normally separately carried out desulfurization and denitration, complicated huge, defectives such as initial outlay is big, operating cost height that this has caused the discharging flue gas purification system have seriously restricted the actual enforcement of discharging flue gas desulfurization and denitrification.Flue gas desulfurization technique is mainly based on limestone-gypsum wet method, rotating spraying semidry method, in-furnace calcium spraying afterbody humidification activation, sea water desulfuration, electron beam desulfurization, flue gas circulating fluidized bed desulfurization etc., wherein the wet type limestone-based process is the tail flue gas desulfur technology that is most widely used in the world now, its subject matter is that the solubility of absorbent (lime or lime stone) is little, utilization rate is low, and the waste residue amount is big; Gas denitrifying technology mainly contains SCR technology (SCR), SNCR technology (SNCR), electronic beam method, impulse electric corona method, complex compound absorption process and urea absorption process etc., comparatively ripe gas denitrifying technology at present in service mainly is SCR technology, SNCR technology and SNCR/SCR combination technique, but the SCR method exists the initial investment expense higher, operating temperature range is narrow, and exist ammonia to leak, can generate N
2O, and shortcoming such as the easy inactivation of catalyst; And the SNCR denitration efficiency is lower, and the ammonia leakage is many, causes secondary pollution.Countries in the world in recent years, especially industrially developed country has all carried out desulphurization denitration Study on Technology exploitation simultaneously in succession, and carried out certain commercial Application, electron beam irradiation method, impulse electric corona method, active carbon adsorption, NOxSO technology and Pahlman flue gas desulfurization and denitration technique etc. are abroad arranged at present, but China still lack at present this type of technology or because of energy consumption and cost too high and incompatible.Chinese invention patent (application number: 91105599.1) proposed to carry out the while desulphurization denitration with ammoniacal liquor, sulphur ammonium or its acidic aqueous solution, urea and compound powder thereof or its aqueous solution different temperatures section in stove.This invention and the utility model have some something in common on desulfurization denitrification agent, but it uses technology different fully with this law, and its effect also differs widely.Chinese invention patent (application number: 91105599.1) be used for the furnace high-temperature section, certainly will bring high energy loss, and problem such as stove internal corrosion.
Traditional desulfuring and denitrifying apparatus mostly adopts A reactor to arrange, not only make the reactor apparatus spatial altitude increase, brought the difficulty of installation and maintenance, also make the unification of absorption liquid overall density simultaneously, bring adverse factors to the operational management of equipment with system operation cost, can't realize system's optimal economic operational effect.Yet if adopt the independent of two-stage reactor to arrange, will make that not only whole system is complicated, but also can increase the floor space of equipment, these situations are used both unreasonable, also uneconomical to reality.
Summary of the invention
The utility model is intended to provide a kind of integrated twin-stage fluid column of flue gas desulfurization and denitrification formula absorption reactor thermally that can reduce occupation area of equipment and compact conformation.
The utility model adopts following technical scheme:
The integrated twin-stage fluid column of flue gas and desulfurizing and denitrifying described in the utility model formula absorption reactor thermally comprises cylindrical shell, in cylindrical shell, be provided with dividing plate and be the one-level absorption reactor thermally by the space that this dividing plate and cylindrical shell surround, another space that is surrounded by this dividing plate and cylindrical shell is the secondary absorption reactor thermally, on the one-level absorption reactor thermally, be provided with one-level absorption reactor thermally smoke inlet, be provided with the one-level gas distributor in the bottom of one-level absorption reactor thermally, be connected with the one-level collecting tank in the lower end of one-level absorption reactor thermally, be provided with the one-level demister on the top of one-level absorption reactor thermally, be provided with one-level fluid column formula injector in one-level absorption reactor thermally bottom and above being positioned at the one-level gas distributor, and the nozzle of one-level fluid column formula injector upwards, on the secondary absorption reactor thermally, be provided with secondary absorption reactor thermally exhanst gas outlet, be connected with the secondary collecting tank in the lower end of secondary absorption reactor thermally, be provided with the secondary gas distributor on the top of secondary absorption reactor thermally, the nozzle that is provided with secondary fluid column formula injector and secondary fluid column formula injector in the bottom of secondary absorption reactor thermally makes progress, and one-level demister and secondary gas distributor are by channel connection.
Compared with prior art, the utlity model has following advantage:
1. in the utility model, flue gas carries out gas-liquid mixed with placing the absorption liquid in one-level absorption reactor thermally and the secondary absorption reactor thermally respectively, realized desulphurization denitration process simultaneously effectively, its overall efficiency height, system is simple, cost of investment is low, operating cost is little, non-secondary pollution.
2. be equipped with the air inlet distributor in the two-stage reactor, make that the interior smoke distribution of reactor is more even, help the chemical reaction of interior gas-liquid of reactor or gas gas phase.
3. adopt the two-stage reactor processing procedure, mixing contacts most of SO in the flue gas to flue gas with the urea mixed solution with ammonia in A reactor
2And NO
xBy the associating absorbing and removing, flue gas is removed most drop in the flue gas through the one-level demister, and the ammonia of carrying secretly on a small quantity enters second reactor with flue gas; Flue gas only mixes with urea liquid and contacts in second reactor, the little ammonia that flue gas is carried secretly from A reactor this once more with flue gas SO
2Reaction, amino originally are consumed to the greatest extent, and the bi-level treatment process makes reaction temperature be easier to control, solve problems such as aerosol that the ammonia process of desulfurization causes and emission intensity effectively.
4. owing to adopt the bi-level treatment process, can be to the SO of high and low variable concentrations
2And NO
xFlue gas adopts the ammonia and the urea mixed solution of different proportion, is convenient to adjusting in service and control, makes flue gas and desulfurizing and denitrifying efficient and operating cost reach economic optimum.
5. adopt the two-stage reactor integrated design technology, one-level, second reactor are coupling in the same container, with dividing plate two-stage reactor is separated, make the outlet and the second reactor import of A reactor become the inner passage, this has not only simplified the connection structure of two-stage reactor greatly, saves the initial cost cost, reduced occupation area of equipment, realized that simultaneously flue gas hangs down the structural configuration of into hanging down, helped the I﹠M of equipment, had the advantage of compact conformation.
6. adopt the two-stage reactor integrated design technology, the flow of flue gas mode is upwards become earlier upwards by single, the type of flow that the back is downward greatly reduces the spatial altitude of flue gas purifying equipment, has saved the space, has provided cost savings.
7. adopt the two-stage reactor integrated design technology, one-level, second reactor be coupling in the same container, two-stage reactor is separated, make the radiation loss of purification reactor equipment reduce with dividing plate,
8. saved the energy consumption of subsequent technique process.
9. adopt fluid column formula injection reactor, fluid column formula injector is arranged in reactor lower part, and fluid column sprays from bottom to top, make absorption liquid rise with the decline process in all contact with flue gas, gas-liquid contact time increases greatly, has prolonged the gas liquid reaction time.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment, and one-level absorption reactor thermally smoke inlet 21, one-level gas distributor 2, one-level fluid column formula injector 26, one-level demister 4, firsts and seconds reactor dividing plate 23, secondary gas distributor 5, secondary liquid column-spraying device 27, secondary demister 7, secondary absorption reactor thermally exhanst gas outlet 25, reactor shell 28 are wherein arranged.
The specific embodiment
The integrated twin-stage fluid column of a kind of flue gas and desulfurizing and denitrifying formula absorption reactor thermally comprises cylindrical shell 28, a space that is provided with dividing plate 23 and is surrounded by this dividing plate 23 and cylindrical shell 28 in cylindrical shell 28 is an one-level absorption reactor thermally 3, is secondary absorption reactor thermally 6 by this dividing plate 23 with another space that cylindrical shell 28 surrounds, on one-level absorption reactor thermally 3, be provided with one-level absorption reactor thermally smoke inlet 21, be provided with one-level gas distributor 2 in the bottom of one-level absorption reactor thermally 3, be connected with one-level collecting tank 15 in the lower end of one-level absorption reactor thermally 3, be provided with one-level demister 4 on the top of one-level absorption reactor thermally 3, be provided with one-level fluid column formula injector 26 in one-level absorption reactor thermally 3 bottoms and above being positioned at one-level gas distributor 2, and the nozzle of one-level fluid column formula injector 26 upwards, on secondary absorption reactor thermally 6, be provided with secondary absorption reactor thermally exhanst gas outlet 25, be connected with secondary collecting tank 11 in the lower end of secondary absorption reactor thermally 6, be provided with secondary gas distributor 5 on the top of secondary absorption reactor thermally 6, the nozzle that is provided with secondary fluid column formula injector 27 and secondary fluid column formula injector 27 in the bottom of secondary absorption reactor thermally 6 makes progress, and one-level demister 4 and secondary gas distributor 5 are by channel connection.
Claims (1)
1. the integrated twin-stage fluid column of flue gas and desulfurizing and denitrifying formula absorption reactor thermally, it is characterized in that comprising cylindrical shell (28), a space that is provided with dividing plate (23) and is surrounded by this dividing plate (23) and cylindrical shell (28) in cylindrical shell (28) is one-level absorption reactor thermally (3), another space that is surrounded by this dividing plate (23) and cylindrical shell (28) is secondary absorption reactor thermally (6), on one-level absorption reactor thermally (3), be provided with one-level absorption reactor thermally smoke inlet (21), be provided with one-level gas distributor (2) in the bottom of one-level absorption reactor thermally (3), be connected with one-level collecting tank (15) in the lower end of one-level absorption reactor thermally (3), be provided with one-level demister (4) on the top of one-level absorption reactor thermally (3), be provided with one-level fluid column formula injector (26) in one-level absorption reactor thermally (3) bottom and above being positioned at one-level gas distributor (2), and the nozzle of one-level fluid column formula injector (26) upwards, on secondary absorption reactor thermally (6), be provided with secondary absorption reactor thermally exhanst gas outlet (25), be connected with secondary collecting tank (11) in the lower end of secondary absorption reactor thermally (6), be provided with secondary gas distributor (5) on the top of secondary absorption reactor thermally (6), the nozzle that is provided with secondary fluid column formula injector (27) and secondary fluid column formula injector (27) in the bottom of secondary absorption reactor thermally (6) makes progress, and one-level demister (4) and secondary gas distributor (5) are by channel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200366066U CN201020339Y (en) | 2007-04-06 | 2007-04-06 | Smoke simultaneity desulfurization denitration integrative double-stage liquid column type absorption reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200366066U CN201020339Y (en) | 2007-04-06 | 2007-04-06 | Smoke simultaneity desulfurization denitration integrative double-stage liquid column type absorption reactor |
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| CN201020339Y true CN201020339Y (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200366066U Expired - Lifetime CN201020339Y (en) | 2007-04-06 | 2007-04-06 | Smoke simultaneity desulfurization denitration integrative double-stage liquid column type absorption reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349897A (en) * | 2013-07-30 | 2013-10-16 | 四川省品信机械有限公司 | Desulfuration and dedusting device for rotary-type kiln |
| CN114832613A (en) * | 2022-05-18 | 2022-08-02 | 榆林学院 | Coal chemical industry high-temperature dust-containing VOCs treatment system and method |
-
2007
- 2007-04-06 CN CNU2007200366066U patent/CN201020339Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349897A (en) * | 2013-07-30 | 2013-10-16 | 四川省品信机械有限公司 | Desulfuration and dedusting device for rotary-type kiln |
| CN114832613A (en) * | 2022-05-18 | 2022-08-02 | 榆林学院 | Coal chemical industry high-temperature dust-containing VOCs treatment system and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080213 |
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| CX01 | Expiry of patent term |