CN202620999U - Desulfurization and denitration integrated flue gas cleaning system - Google Patents
Desulfurization and denitration integrated flue gas cleaning system Download PDFInfo
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- CN202620999U CN202620999U CN201120571305.XU CN201120571305U CN202620999U CN 202620999 U CN202620999 U CN 202620999U CN 201120571305 U CN201120571305 U CN 201120571305U CN 202620999 U CN202620999 U CN 202620999U
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Abstract
The utility model relates to a desulfurization and denitration integrated flue gas cleaning system, and in particular relates to the desulfurization and denitration integrated flue gas cleaning system for coal-fired industry. The system comprises a flue gas inputting system, a flue gas absorbing and cleaning system and a clean flue gas discharging system which are mutually connected and also comprises a flue gas oxidizing system and a concentrating system which are connected with the flue gas inputting system, a size treatment system connected with the concentrating system, a size oxidizing system connected with the flue gas absorbing and cleaning system and an absorbent conveying system. Compared with the prior art, the system disclosed by the utility model has the advantages that effective integration is carried out on the system, so that simple, high-efficiency and environment-friendly desulfurization and denitration integral operation is realized and the economic cost is greatly reduced accordingly; and the system is suitable for popularization and application in the fields of cleaning treatment of tail gases of coal-fired boilers and other industrial tail gases taking oxides of sulfur and nitrogen as main pollutants.
Description
Technical field
The utility model relates to a kind of flue gas desulfurization and denitrification integrated purification system of desulfurization and denitrification integral flue gas purification system, especially coal-fired industry.
Background technology
At present, in coal-burning boiler and other industrial tail gas pollutant with sulphur, nitrogen oxide (SO
2, NOx) be main, more to the improvement technology of these flue gas pollutants, for example: administer sulfur dioxide (SO
2) limestone-gypsum method, ammonia process, two alkaline process, SCR (SCR) method, SNCR (SNCR) method, the low nitrogen burning method of administering nitrogen oxide (NOx) need be carried out respectively in different devices and flow process for removing fully then of the sulphur in the flue gas, nitrogen pollutant; Simultaneously; Take big quantity space, consume the mass energy material, therefore; Demand urgently researching and developing out be unified in carry out in the same technological process the high-efficiency desulfurization denitration technology; With energy-saving consumption-reducing, reduce financial cost, save the area.
In the prior art; Patent of invention ZL 200910111395.1 discloses a kind of technological process for flue gas purification; Comprise flue gas desulfurization, dedusting and denitration; More than 300 ℃, flue gas is earlier through the dedusting of metallic fiber filtrate house-bag duster for high temperature, and then the selective-catalytic-reduction denitrified reactor denitration of process.This invention adopts catalyst to utilize the self-contained heat of flue gas at high temperature to carry out denitration; Dedusting more effectively, desulfurization and denitration, still, regeneration and the work simplification aspect for catalyst self exists not enough on the one hand; Financial cost is high on the other hand, unsuitable applying.
The method and system of 201010116105.5 1 kinds of gas cleanings of patent of invention ZL; Realize that by means of catalyst catalyst that is adopted and adsorbent are that same substance is promptly optimized activated coke to the cracking of nitrogen oxide, by means of De bioxin/furans in the adsorbents adsorb flue gas in this invention.This invention denitration under low temperature environment, Tuo bioxin/furans have solved in denitration in the prior art, the Tuo bioxin/furans process to a certain extent, the problem that efficient is low, cost is high, and still, this invention is only applicable to denitrifying oxide, can not have desulfurizing function concurrently.
The novel flue gas purifying equipment of utility model patent ZL201020642632.5, it relates to the environmental unit technical field.Its upper end, absorption tower is provided with exhaust outlet, and the lower end of exhaust outlet is provided with demister, and the demister lower end is provided with netted deflector, and the lower end of netted deflector is provided with vaporific nozzle, and the bottom, absorption tower is provided with absorption liquid; The lower end side on absorption tower is provided with air inlet, and the bottom on absorption tower is provided with annotates the ammonia point, annotates ammonia point upper end and is provided with and the inner absorption liquid supply pump that is connected in absorption tower, and the absorption liquid supply pump is connected with drying-granulating system, vaporific nozzle and netted deflector respectively.This utility model is with (NH
4)
2SO
3Solution carries out deep oxidation with respect to traditional ammonia process, and with respect to present flue gas desulfurization device, energy consumption decreases, and clean-up effect is better, but also is only applicable to remove the amounts of sulphur contaminants in the flue gas, can not have the function that removes nitrogen pollutant concurrently.
The utility model content
The purpose of the utility model is; Problem to prior art exists provides a kind of desulfurization and denitrification integral flue gas purification system, in same process system, realizes efficiently removing of sulfur-bearing, nitrogen pollutant synchronously; Make the flue gas integration desulfurization denitration; Thereby reduce the loss of energy and material, save the area, and then reduce financial cost.
The technical scheme that the utility model is dealt with problems is: a kind of desulfurization and denitrification integral flue gas purification system is provided; Comprise interconnective flue gas input system, smoke absorption cleaning system and clean flue gas emission; Wherein, also comprise the flue gas oxidative system that is connected with said flue gas input system, the concentration systems that is connected with the flue gas input system and the slurries treatment system that is connected with said concentration systems, the slurries oxidative system that is connected with the smoke absorption cleaning system and absorbent induction system.
Further, said flue gas oxidative system is one of ozone oxidation system, hydrogen peroxide oxidation system, pure oxygen oxidative system and air oxidation system; Said slurries oxidative system is one of ozone oxidation system, hydrogen peroxide oxidation system, pure oxygen oxidative system and air oxidation system.
Further:
Said flue gas input system comprises interconnective input flue and flue gas input blower fan.
Said flue gas oxidative system is the ozone oxidation system, comprises interconnective air input channel, air separation unit and ozone generating-device, and said ozone generating-device is connected with said input flue.
Said concentration systems comprises spraying layer, the outer circulating pump of concentration tower in concentration tower, the concentration tower; The upper end of the circulating pump that said concentration tower is outer is connected with the interior spraying layer of said concentration tower, and its lower end is connected with the bottom of said concentration tower.
Said slurries treatment system comprises interconnective successively concentrated slurry excavationg pump, solid-liquid separator, liquid withdrawal system and solid recovery unit; Said concentrated slurry excavationg pump is connected with the bottom of said concentration tower.
Said smoke absorption cleaning system comprises absorption liquid EGR and the flushing water EGR outside absorption tower and the absorption tower; Be disposed with flushing water spraying layer, the demister of absorption liquid spraying layer, gas cap, packing layer, packing layer, the flushing water spraying layer of demister in the said absorption tower from the bottom to top; Absorption liquid EGR outside the said absorption tower comprises the absorption liquid circulating pump, and the upper end of said absorption liquid circulating pump is connected with said absorption liquid spraying layer, and the lower end is connected with the bottom on said absorption tower; Flushing water EGR outside the said absorption tower comprises flush box and packing layer flush water pump that links to each other with the bottom of said flush box respectively and demister flush water pump; Wherein, The top of said flush box is connected with said gas cap; The upper end of said packing layer flush water pump is connected with the flushing water spraying layer of packing layer, and the upper end of the flush water pump of said demister is connected with the flushing water spraying layer of demister.
Said smoke absorption cleaning system is connected with said absorption tower through said concentration tower with said concentration systems; The top of said concentration tower is connected with the bottom on said absorption tower through transition flue duct, and the bottom of said concentration tower is connected with the bottom on said absorption tower through saturated slurries excavationg pump.
Said slurries oxidative system is the air oxidation system, comprises interconnective air input blower fan and air input channel, and wherein, said air input blower fan communicates with the external world, and said air input channel is connected with the bottom on said absorption tower.
Said absorbent induction system comprises interconnective absorbent preparation facilities, absorbent storage device and absorbent supply pump, and said absorbent supply pump is connected with the bottom on said absorption tower.
Said clean flue gas emission comprises interconnective discharge flue and chimney, and said discharge flue is connected with the top on said absorption tower.
Further, be provided with the receipts water pipe in the said gas cap, said receipts water pipe is connected with the top of said flush box; Also be provided with aeration tube in the said absorption tower, said aeration tube is connected with said air input channel; Said packing layer is a structured filling material layer; The liquid withdrawal system of said slurries treatment system comprises vaporising device and drying device.
Further, said demister comprises demister, following demister; The flushing water spraying layer of said demister comprises the flushing water spraying layer of demister, the flushing water spraying layer of following demister; On said demister above be on the flushing water spraying layer of demister, above said demister down, be the flushing water spraying layer of demister down; The flushing water spraying layer of the said flushing water spraying layer of going up demister and following demister is connected with the upper end of the flush water pump of said demister respectively.
Use the utility model desulfurization and denitrification integral flue gas purification system flue, comprise the steps:
(1) flue gas input
Make flue gas get into concentration systems through the flue gas input system through the oxidation of flue gas oxidative system;
(2) flue gas cool-down
The flue gas that gets into concentration systems gets into the gas cleaning absorption system after the concentration systems cooling;
(3) smoke absorption purifies
The flue gas that gets into the gas cleaning absorption system is after the absorbent that the absorbent induction system is carried purifies the absorption processing, and gas gets into clean flue gas emission, and the residue slurries get into the slurries treatment system through concentration systems; Wherein, flue gas is carried out in the process of absorption cleaning at the gas cleaning absorption system, the slurries oxidative system is carried out continuous oxidation to absorbing slurries;
(4) clean fume emission
The clean fume emission that gets into clean flue gas emission in the said step (3) is to extraneous;
(5) the residue slurries separate
Residue slurries in the said step (3) get into the slurries treatment system and carry out Separation and Recovery.
Said absorption slurries are flue gas and the reacted slurries of absorbent.
Preferably, the oxidant of the oxidation flue gas of said flue gas oxidative system is one of ozone, hydrogen peroxide solution, pure oxygen and air; The oxidant that said slurries oxidative system oxidation absorbs slurries is one of ozone, hydrogen peroxide solution, pure oxygen and air; Said absorbent is potassium hydroxide solution or solution of potassium carbonate.
Preferably, the mol ratio of the NO in said ozone and the flue gas is 0.4～1, makes the part NO in the flue gas be oxidized to NO
2Thereby, make NO and NO in the flue gas
2Mol ratio reaches 1: 1 optimal absorption reactiveness; The quality percentage composition of said potassium hydroxide solution is 1% to 25%; The quality percentage composition of said solution of potassium carbonate is 1% to 25%.
Preferably:
In the said step (1):
Flue gas gets into the input flue of said flue gas input system, import the oxidant oxidation of said input flue through said flue gas oxidative system after, get into the concentration tower of said concentration systems through flue gas input blower fan;
Wherein, said flue gas oxidative system is the ozone oxidation system, and said oxidant is an ozone, and said ozone gets into air separation unit by air through the air input channel and makes through ozone generating-device;
In the said step (2):
The flue gas cool-down of concentration tower that gets into said concentration systems is after transition flue duct gets into the gas cleaning absorption system;
In the said step (3):
After flue gas gets into the absorption tower of gas cleaning absorption system, purify absorption, purify through the flushing water spraying layer of packing layer and the flushing water spraying layer circulated sprinkling flushing water of demister through the flushing water EGR again through absorption liquid spraying layer circulated sprinkling absorption liquid through the absorption liquid EGR earlier from bottom to top;
Wherein, the gas cap through absorption liquid spraying layer top intercepts absorption liquid and merges with flushing water, the absorption slurries of carrying secretly through packing layer obstruct flue gas, absorbs the droplet in the up flue gas through demister; The absorption liquid circulating pump of said absorption liquid outside the absorption tower carries out circulated sprinkling from said absorption liquid spraying layer; Said flushing water is behind the flushing water spraying layer spray of the flushing water spraying layer of packing layer and demister; Collect and send into the flush box that is attached thereto by said gas cap, send into the flushing water spraying layer of packing layer and the flushing water spraying layer of demister carries out circulated sprinkling through the flush water pump of the flush water pump of packing layer and demister respectively again;
Said slurries oxidative system is the air oxidation system, and the oxidant that said oxidation absorbs slurries is an air, and said air carries out continuous oxidation earlier after air input blower fan and air input channel get into the bottom on absorption tower to absorbing slurries;
Said absorbent induction system is sent into the bottom on absorption tower with the absorbent of absorbent preparation facilities preparation in the absorbent storage device through the absorbent supply pump, and flue gas is purified absorption;
In the said step (4):
The clean flue gas that gets into clean flue gas emission in the said step (3) is earlier after discharge flue and chimney get into extraneous;
In the said step (5):
Residue slurries in the said step (3) are for absorbing saturated slurries; The saturated slurries of said absorption get into the concentration tower of said concentration systems earlier through saturated slurries excavationg pump; Through circulating and evaporating simmer down to concentrated slurry, said concentrated slurry gets into the slurries treatment system in concentration tower, gets into solid-liquid separator through the concentrated slurry excavationg pump and carries out Separation of Solid and Liquid; Isolated liquid gets into liquid withdrawal system, and isolated solid gets into solid recovery unit.
Preferably, in the said step (2): the flue gas cool-down to 40 of concentration tower that gets into said concentration systems ℃ to 70 ℃ after transition flue duct gets into the gas cleaning absorption system; In the said step (3): some conveying absorbent of absorption liquid Ph＜5 of said absorbent induction system in said absorption tower; The saturated serum density of said absorption reaches 1.1～1.3g/cm
3The time get into saturated slurries excavationg pump; Said concentrated slurry density reaches 1.4～1.7g/cm
3The time get into the concentrated slurry excavationg pump.
In the utility model, the oxidation to flue gas in the said step (1) makes the NO in the flue gas be oxidized to NO
2Thereby, make nitrogen oxide fully purified to absorb and be protected; The flue gas of entering concentration tower and the saturated slurries of absorption of the entering concentration tower in the said step (3) carry out heat exchange in the said step (2), and the self-contained heat of flue gas is fully used; The absorbent main component is potassium hydroxide or potash described in the said step (3); Change available potash fertilizer into after making sulphur, nox adsorption; The oxidation that absorbs slurries then is converted into potash fertilizer such as the potassium nitrate that can utilize again, potassium sulfate fully guarantee is provided for absorbing potassium sulfite, potassium nitrite that the back forms; Simultaneously, absorption liquid and flushing water carry out recycle, non-wastewater discharge; Absorbent in the said step (3) is prepared voluntarily by system and stores, and has avoided the loss of transportation and extra storage; Said step (4) is carried out separating treatment to the residue slurries, and resulting fluid product can obtain potash fertilizer through purifying and utilize, and resulting solid dust etc. can be used as fuel or construction material; Use the utility model and carry out gas cleaning, desulfuration efficiency reaches more than 99%, and denitration efficiency reaches more than 80%.
Compared with prior art, the beneficial effect of the utility model is: novel and reasonable design, the simple and environmental protection of process system; The desulfurization that fully realizes flue gas is out of stock integrated, promptly in same process system, sulfur-bearing, nitrogen pollutant is carried out synchronous high-efficiency and removes, and the later stage product is made full use of; Simultaneously, energy-saving effect is remarkable, and land area significantly reduces; Financial cost significantly reduces, and is suitable in coal-burning boiler and other industrial tail gas with sulphur, nitrogen oxide (SO
2, NOx) be that main pollutant purification process field is applied.
Description of drawings
Fig. 1 is the structural representation of the utility model desulfurization and denitrification integral flue gas purification system.
Shown in the figure: 1-imports flue, 2-flue gas input blower fan; The 3-concentration tower, the 4-transition flue duct, the 5-absorption tower, 6-discharges flue, 7-chimney; Demister under the 8-, the flushing water spraying layer of demister under the 9-, the flushing water spraying layer of 10-packing layer, 11-structured filling material layer, 12-gas cap; Spraying layer in the 13-absorption liquid spraying layer, 14-concentration tower, the circulating pump that the 15-concentration tower is outer, 16-absorption liquid circulating pump, the saturated slurries excavationg pump of 17-; The 18-flush box, 19-packing layer flush water pump, 20-demister flush water pump, 21-absorbent preparation facilities, 22-absorbent storage device; 23-absorbent supply pump, 24-concentrated slurry excavationg pump, 25-solid-liquid separator, 26-vaporising device, 27-drying device; The 28-solid recovery unit, 29-ozone generating-device, 30-air separation unit, 31-air input channel; The 32-oxidation fan, 33-oxidation air pipeline, the last demister of 34-, the flushing water spraying layer of the last demister of 35-.
The specific embodiment
Embodiment 1
As shown in Figure 1; A kind of desulfurization and denitrification integral flue gas purification system of the utility model comprises interconnective flue gas input system, smoke absorption cleaning system, clean flue gas emission, the flue gas oxidative system that is connected with said flue gas input system, the concentration systems and the slurries treatment system that is connected with said concentration systems, the slurries oxidative system that is connected with the smoke absorption cleaning system and the absorbent induction system that are connected with the flue gas input system; Wherein:
Said flue gas input system comprises interconnective input flue 1 and flue gas input blower fan 2.
Said flue gas oxidative system is the ozone oxidation system, comprises interconnective air input channel 31, air separation unit 30 and ozone generating-device 29, and ozone generating-device 29 is connected with input flue 1.
Said concentration systems comprises spraying layer 14, the outer circulating pump 15 of concentration tower in concentration tower 3, the concentration tower.The upper end of the circulating pump 15 that concentration tower is outer is connected with the interior spraying layer 14 of concentration tower, and its lower end is connected with the bottom of concentration tower 3.
Said slurries treatment system comprises interconnective successively concentrated slurry excavationg pump 24, solid-liquid separator 25, vaporising device 26 and drying device 27 and the solid recovery unit 28 that is connected with solid-liquid separator 25; Concentrated slurry excavationg pump 24 is connected with the bottom of concentration tower 3.
Said smoke absorption cleaning system comprises absorption liquid EGR and the flushing water EGR outside absorption tower 5 and the absorption tower 5; Be disposed with absorption liquid spraying layer 13 from the bottom to top in the said absorption tower 5, be provided with the gas cap 12 of receiving water pipe, the flushing water spraying layer 10 of structured filling material layer 11, packing layer, down demister 8, down demister flushing water spraying layer 9, go up demister 34, go up the flushing water spraying layer 35 of demister; Said absorption liquid EGR comprises absorption liquid circulating pump 16, and the upper end of absorption liquid circulating pump 16 is connected with absorption liquid spraying layer 13, and the lower end is connected with the bottom on absorption tower 5; Packing layer flush water pump 19 and demister flush water pump 20 that said flushing water EGR comprises flush box 18 and links to each other with the bottom of flush box 18 respectively; Wherein, The top of flush box 18 is connected with the receipts water pipe of gas cap 12; The upper end of packing layer flush water pump 19 is connected with the flushing water spraying layer 10 of packing layer, and the upper end of the flush water pump 20 of demister is connected with the flushing water spraying layer 35 of last demister and the flushing water spraying layer 9 of following demister respectively.
The top of concentration tower 3 is connected through the bottom of transition flue duct 4 with absorption tower 5, and the bottom of concentration tower 3 is connected with the bottom on absorption tower 5 through saturated slurries excavationg pump 17.
Said slurries oxidative system is the air oxidation system, comprises interconnective air input blower fan 32 and air input channel 33, and wherein, air input blower fan 32 communicates with the external world, and air input channel 33 is connected with the bottom on absorption tower 5;
Said absorbent induction system comprises interconnective absorbent preparation facilities 21, absorbent storage device 22 and absorbent supply pump 23, and absorbent supply pump 23 is connected with the bottom on absorption tower 5.
Said clean flue gas emission comprises interconnective discharge flue 6 and chimney 7, discharges flue 6 and is connected with the top on absorption tower 5.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning, comprise the steps:
(1) flue gas input
Flue gas gets into input flue 1, and the ozone oxidation of importing through the ozone oxidation system gets into concentration towers 3 after flue gas is imported blower fan 2, and wherein, ozone gets into air separation unit 30 by air through air input channel 31 and makes through ozone generating-device 29.
(2) flue gas cool-down
The flue gas cool-down to 40 that gets into concentration tower 3 is ℃ after transition flue duct 4 gets into the gas cleaning absorption systems.
(3) smoke absorption purifies
The flue gas that gets into the gas cleaning absorption system is after the absorbent that the absorbent induction system is carried purifies the absorption processing, and gas gets into clean flue gas emission, and the residue slurries get into the slurries treatment system through concentration systems; Wherein, flue gas is carried out in the process of absorption cleaning at the gas cleaning absorption system, the air oxidation system carries out continuous oxidation to absorbing slurries;
After flue gas gets into the absorption tower 5 of gas cleaning absorption system; Pass through the absorption liquid EGR from bottom to top earlier through absorption liquid spraying layer 13 circulated sprinkling absorption liquids; Purify absorption, purify through the flushing water spraying layer 10 of packing layer, the flushing water spraying layer 9 of following demister and the flushing water spraying layer 35 circulated sprinkling flushing waters of last demister through the flushing water EGR again.
Wherein, intercept absorption liquids through gas cap 12 and merge with flushing water, through structured filling material layer 11 intercept absorption slurries that flue gases carry secretly, through the droplet in demister 8 and the up flue gas of last demister 34 absorptions down; Said absorption liquid carries out circulated sprinkling through absorption liquid circulating pump 16 from absorption liquid spraying layer 13; Said flushing water is behind flushing water spraying layer 35 sprays of the flushing water spraying layer 10 of packing layer, the flushing water spraying layer 9 that descends demister and last demister; Collect and send into the flush box 18 that is attached thereto by the receipts water pipe of gas cap 12, more respectively through the flush water pump 20 of the flush water pump 19 of packing layer and demister send into the flushing water spraying layer 10 of packing layer, the flushing water spraying layer 9 of demister and the flushing water spraying layer 35 of last demister carry out circulated sprinkling down.
The oxidant that the oxidation of said air oxidation system absorbs slurries is an air, and said air is earlier after continuous oxidation is carried out to absorbing slurries in the bottom on air input blower fan 32 and air input channel 33 entering absorption towers 5.
Said absorbent induction system is sent into the bottom on absorption tower 5 with the absorbent of absorbent preparation facilities in the absorbent storage device 22 21 preparation through absorbent supply pump 23, and flue gas is purified absorption.
(4) clean fume emission
The clean flue gas that gets into clean flue gas emission in the said step (3) is earlier after discharge flue 6 gets into extraneous with chimney 7.
(5) the residue slurries separate
The residue slurries are for absorbing saturated slurries in the said step (3); The saturated slurries of said absorption get into concentration tower 3 through saturated slurries excavationg pump earlier; In concentration tower 3 through circulating and evaporating simmer down to concentrated slurry; Said concentrated slurry gets into the slurries treatment system, gets into solid-liquid separator 25 through concentrated slurry excavationg pump 24 and carries out Separation of Solid and Liquid, and isolated liquid successively gets into vaporising device 26 and carries out crystallization and purification with drying device 27; Obtain the potassium sulfate, the potassium nitrate that can as fertilizer sources utilize again, entering solid recovery units 28 such as isolated solid dust can be used as fuel or construction material.
In the foregoing description, said absorbent is 1% potassium hydroxide solution for the quality percentage composition; The mol ratio of NO in said ozone and the flue gas is 2: 5; In the said step (3): some conveying absorbent of absorption liquid Ph＜5 of said absorbent induction system in said absorption tower 5; The saturated serum density of said absorption reaches 1.1g/cm
3The time get into saturated slurries excavationg pump 17; Said concentrated slurry density reaches 1.4g/cm
3The time get into concentrated slurry excavationg pump 24.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.2%, and denitration efficiency reaches 85.5%.
Embodiment 2
As shown in Figure 1, a kind of setting of desulfurization and denitrification integral flue gas purification system and distribution are with embodiment 1.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning, remove following steps with embodiment 1:
The flue gas cool-down to 70 that gets into concentration tower 3 in the step (2) is ℃ after transition flue duct 4 gets into the gas cleaning absorption systems;
In the foregoing description, said absorbent is 25% potassium hydroxide solution for the quality percentage composition; The mol ratio of NO in said ozone and the flue gas is 1: 1; The saturated serum density of said absorption reaches 1.3g/cm
3The time get into saturated slurries excavationg pump 17; Said concentrated slurry density reaches 1.7g/cm
3The time get into concentrated slurry excavationg pump 24.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.5%, and denitration efficiency reaches 88%.
Embodiment 3
As shown in Figure 1, a kind of setting of desulfurization and denitrification integral flue gas purification system and distribution are with embodiment 1.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning, remove following steps with embodiment 1:
The flue gas cool-down to 60 that gets into concentration tower 3 in the step (2) is ℃ after transition flue duct 4 gets into the gas cleaning absorption systems;
In the foregoing description, said absorbent is 8% potassium hydroxide solution for the quality percentage composition; The mol ratio of NO in said ozone and the flue gas is 1: 2; The saturated serum density of said absorption reaches 1.2g/cm
3The time get into saturated slurries excavationg pump 17; Said concentrated slurry density reaches 1.5g/cm
3The time get into concentrated slurry excavationg pump 24.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.3%, and denitration efficiency reaches 86%.
Embodiment 4
As shown in Figure 1, a kind of setting of desulfurization and denitrification integral flue gas purification system and distribution are with embodiment 1.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning with embodiment 1, remove following steps: said absorbent is 1% solution of potassium carbonate for the quality percentage composition.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.1%, and denitration efficiency reaches 85%.
As shown in Figure 1, a kind of setting of desulfurization and denitrification integral flue gas purification system and distribution are with embodiment 1.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning with embodiment 2, remove following steps: said absorbent is 25% solution of potassium carbonate for the quality percentage composition.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.7%, and denitration efficiency reaches 89%.
Embodiment 6
As shown in Figure 1, a kind of setting of desulfurization and denitrification integral flue gas purification system and distribution are with embodiment 1.
Use the utility model desulfurization and denitrification integral flue gas purification system and carry out gas cleaning with embodiment 3, remove following steps: said absorbent is 15% solution of potassium carbonate for the quality percentage composition.
Use the utility model and carry out gas cleaning, desulfuration efficiency reaches 99.5%, and denitration efficiency reaches 87%.
The utility model is not limited to above-mentioned embodiment, and those skilled in the art made to any conspicuous improvement of above-mentioned embodiment or change, can not exceed the design of the utility model and the protection domain of accompanying claims.
Claims (5)
1. desulfurization and denitrification integral flue gas purification system; Comprise interconnective flue gas input system, smoke absorption cleaning system and clean flue gas emission, it is characterized in that: also comprise the flue gas oxidative system that is connected with said flue gas input system, the concentration systems that is connected with the flue gas input system and the slurries treatment system that is connected with said concentration systems, the slurries oxidative system that is connected with the smoke absorption cleaning system and absorbent induction system.
2. desulfurization and denitrification integral flue gas purification system according to claim 1 is characterized in that:
Said flue gas oxidative system is one of ozone oxidation system, hydrogen peroxide oxidation system, pure oxygen oxidative system and air oxidation system; Said slurries oxidative system is one of ozone oxidation system, hydrogen peroxide oxidation system, pure oxygen oxidative system and air oxidation system.
3. desulfurization and denitrification integral flue gas purification system according to claim 1 and 2 is characterized in that:
Said flue gas input system comprises interconnective input flue and flue gas input blower fan;
Said flue gas oxidative system is the ozone oxidation system, comprises interconnective air input channel, air separation unit and ozone generating-device, and said ozone generating-device is connected with said input flue;
Said concentration systems comprises spraying layer, the outer circulating pump of concentration tower in concentration tower, the concentration tower; The upper end of the circulating pump that said concentration tower is outer is connected with the interior spraying layer of said concentration tower, and its lower end is connected with the bottom of said concentration tower;
Said slurries treatment system comprises interconnective successively concentrated slurry excavationg pump, solid-liquid separator, liquid withdrawal system and solid recovery unit; Said concentrated slurry excavationg pump is connected with the bottom of said concentration tower;
Said smoke absorption cleaning system comprises absorption liquid EGR and the flushing water EGR outside absorption tower and the absorption tower; Be disposed with flushing water spraying layer, the demister of absorption liquid spraying layer, gas cap, packing layer, packing layer, the flushing water spraying layer of demister in the said absorption tower from the bottom to top; Absorption liquid EGR outside the said absorption tower comprises the absorption liquid circulating pump, and the upper end of said absorption liquid circulating pump is connected with said absorption liquid spraying layer, and the lower end is connected with the bottom on said absorption tower; Flushing water EGR outside the said absorption tower comprises flush box and packing layer flush water pump that links to each other with the bottom of said flush box respectively and demister flush water pump; Wherein, The top of said flush box is connected with said gas cap; The upper end of said packing layer flush water pump is connected with the flushing water spraying layer of packing layer, and the upper end of the flush water pump of said demister is connected with the flushing water spraying layer of demister;
Said smoke absorption cleaning system is connected with said absorption tower through said concentration tower with said concentration systems; The top of said concentration tower is connected with the bottom on said absorption tower through transition flue duct, and the bottom of said concentration tower is connected with the bottom on said absorption tower through saturated slurries excavationg pump;
Said slurries oxidative system is the air oxidation system, comprises interconnective air input blower fan and air input channel, and wherein, said air input blower fan communicates with the external world, and said air input channel is connected with the bottom on said absorption tower;
Said absorbent induction system comprises interconnective absorbent preparation facilities, absorbent storage device and absorbent supply pump, and said absorbent supply pump is connected with the bottom on said absorption tower;
Said clean flue gas emission comprises interconnective discharge flue and chimney, and said discharge flue is connected with the top on said absorption tower.
4. desulfurization and denitrification integral flue gas purification system according to claim 3 is characterized in that:
Be provided with the receipts water pipe in the said gas cap, said receipts water pipe is connected with the top of said flush box;
Also be provided with aeration tube in the said absorption tower, said aeration tube is connected with said air input channel;
Said packing layer is a structured filling material layer;
The liquid withdrawal system of said slurries treatment system comprises vaporising device and drying device.
5. desulfurization and denitrification integral flue gas purification system according to claim 3 is characterized in that: said demister comprises demister, following demister; The flushing water spraying layer of said demister comprises the flushing water spraying layer of demister, the flushing water spraying layer of following demister; On said demister above be on the flushing water spraying layer of demister, above said demister down, be the flushing water spraying layer of demister down; The flushing water spraying layer of the said flushing water spraying layer of going up demister and following demister is connected with the upper end of the flush water pump of said demister respectively.
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| CN201120571305.XU CN202620999U (en) | 2011-12-31 | 2011-12-31 | Desulfurization and denitration integrated flue gas cleaning system |
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| CN201120571305.XU CN202620999U (en) | 2011-12-31 | 2011-12-31 | Desulfurization and denitration integrated flue gas cleaning system |
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Cited By (8)
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| CN102512927A (en) * | 2011-12-31 | 2012-06-27 | 艾淑艳 | Integrated flue gas desulfurizing and denitrating purification system and purification technology for same |
| CN105771597A (en) * | 2016-04-05 | 2016-07-20 | 石家庄市正定金石化工有限公司 | Ammonia desulfurization process for large furnace tail gas |
| CN105854547A (en) * | 2016-04-01 | 2016-08-17 | 河北科技大学 | Ammonia oxidizing denitration process and reaction apparatus |
| WO2016192274A1 (en) * | 2015-06-05 | 2016-12-08 | 童裳慧 | Flue gas treatment device and method |
| CN107952352A (en) * | 2017-12-26 | 2018-04-24 | 亚太环保股份有限公司 | A kind of catalytic cracking flue gas desulphurization denitration dedusting acid-mist-removing integrated apparatus and method |
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| CN109569206A (en) * | 2018-12-29 | 2019-04-05 | 山东首丰环保设备有限公司 | Desulfurization and denitrification integral system |
| CN113680194A (en) * | 2021-09-15 | 2021-11-23 | 北京清新环境技术股份有限公司 | Flue gas treatment system and flue gas treatment method for semi-dry desulfurization and denitrification |
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- 2011-12-31 CN CN201120571305.XU patent/CN202620999U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102512927A (en) * | 2011-12-31 | 2012-06-27 | 艾淑艳 | Integrated flue gas desulfurizing and denitrating purification system and purification technology for same |
| CN102512927B (en) * | 2011-12-31 | 2014-03-12 | 田鹏程 | Integrated flue gas desulfurizing and denitrating purification system and purification technology for same |
| WO2016192274A1 (en) * | 2015-06-05 | 2016-12-08 | 童裳慧 | Flue gas treatment device and method |
| CN105854547A (en) * | 2016-04-01 | 2016-08-17 | 河北科技大学 | Ammonia oxidizing denitration process and reaction apparatus |
| CN105771597A (en) * | 2016-04-05 | 2016-07-20 | 石家庄市正定金石化工有限公司 | Ammonia desulfurization process for large furnace tail gas |
| CN107952352A (en) * | 2017-12-26 | 2018-04-24 | 亚太环保股份有限公司 | A kind of catalytic cracking flue gas desulphurization denitration dedusting acid-mist-removing integrated apparatus and method |
| CN108502848A (en) * | 2018-05-14 | 2018-09-07 | 山东方泰循环金业股份有限公司 | A kind of technique preparing sulfuric acid using copper blast furnace off-gas |
| CN109569206A (en) * | 2018-12-29 | 2019-04-05 | 山东首丰环保设备有限公司 | Desulfurization and denitrification integral system |
| CN113680194A (en) * | 2021-09-15 | 2021-11-23 | 北京清新环境技术股份有限公司 | Flue gas treatment system and flue gas treatment method for semi-dry desulfurization and denitrification |
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