CN103263839A - Environment-friendly Coal-fired flue gas dedusting, desulfurizing and denitrifying chimney - Google Patents
Environment-friendly Coal-fired flue gas dedusting, desulfurizing and denitrifying chimney Download PDFInfo
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- CN103263839A CN103263839A CN2013101906964A CN201310190696A CN103263839A CN 103263839 A CN103263839 A CN 103263839A CN 2013101906964 A CN2013101906964 A CN 2013101906964A CN 201310190696 A CN201310190696 A CN 201310190696A CN 103263839 A CN103263839 A CN 103263839A
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Abstract
The invention discloses an environment-friendly coal-fired flue gas dedusting, desulfurizing and denitrifying chimney. An oxidation concentrated tower is vertically connected with a spraying tower in series, and then is vertically connected with an electrostatic separating tower in series, then is vertically connected with a secondary spraying tower in series after flue gas boosting, and then is vertically connected with a secondary electrostatic tower in series; and purified flue gas is directly emitted from an outlet of a secondary electrostatic device.
Description
Technical field
Coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney belongs to atmosphere environmental protection field, purifies a kind of equipment that a kind of dust-removal and desulfurizing denitrogenation is provided to coal-fired flue-gas, the chimney of discharging water white transparency flue gas.
Background technology
Coal-fired flue-gas purifies at first static device or bag-type dust at present, removes nitrogen oxide with ammoniacal liquor high-temperature catalytic equipment again, and level is advanced wet desulfuration tower again, by the vaporific white flue gas of smoke stack emission.
Because electrostatic precipitation efficient 99%, so; Contain the flue gas that the soot dust granule of 0.5% Pm2.5 particle diameter of the total ash amount of residue flowed in the vaporific white flue gas and carry into denitration device secretly.
The catalytic reduction that denitration device mainly adopts ammoniacal liquor to make reducing agent removes nitrogen oxide; The catalysis method principle.Do carrier with 3 oxidations, 2 aluminium, do active body with rare metal oxide, catalysis goes out the discharging of nitrogen G﹠W under ℃ condition of high temperature＞300.
After denitrification process is arranged in electrostatic precipitation, make it flue-gas temperature＞300 ℃ after the dedusting, with the flue-gas temperature behind the original electrostatic precipitation from 150 ℃ bring up to＞300 ℃,
According to the wet desulphurization principle; Desulphurization reaction is SO at first
2Essential earlier water-soluble, according to SO
2Water soluble characteristic curve S O
2Water-soluble optimum temperature is 20-80 ℃, average 40-50 ℃, desulphurization plant is installed in denitration device after, more than flue-gas temperature＞300 ℃, be not to remove SO
2Optimum temperature will have a strong impact on desulfuration efficiency.
Because carrying the sulfite solution droplet of a large amount of Pm6-12 particle diameters secretly, advances in the air the vaporific flue gas that discharges after breaking away from, the gypsum particle that oxidation generates the Pm2.5 particle diameter in air is suspended in the air, adds sulfate and soot dust granule-haze base substance that the soot dust granule of remaining Pm2.5 particle diameter behind the electrostatic precipitation constitutes big gas suspension Pm2.5 particle diameter.
Total sulfur in the primary Calculation coal has the sulphur about 50% to be transformed into SO
2Secondary pollutant-sulphate particle is suspended in the air.But because the secondary pollutant of sulfur dioxide does not detect in Environmental Protection Agency, so still promoted.
As; The vaporific flue gas of wet desulfuration tower discharging is just carried a large amount of calcium bisulfite aqueous solution droplet oxidations in air secretly, produces the solid Pm2.5 gypsum particle that is wrapped up by water.Only detect unreacted SO
2, SO
2Be not equal to SO
2Secondary pollutant do not have.Should be the secondary pollutant sulfur S3 of the spray irrigation unreacted sulfur S2+ discharging of sulfur S1+ of coming out from the calculation of total of sulphur.Only detect unreacted S2 now, just assert that secondary pollutant S3 is not mistake.
Because denitrification equipment is installed before the desulfurizing tower, contain sulphur in the flue gas, sulphur can make catalytic member poison, and contains the solid flue dust.
The technological process of coal-fired flue-gas process for purifying order deduster, denitrification equipment, desulfurizing tower is independently in ground level serial connection flow process.Take up an area of greatly, the flow process complexity, highly energy-consuming, expensive.
Patent characteristic of the present invention;
1, the purification of coal-fired flue-gas is in proper order; Deduster serial connection desulfurizing tower, denitrification column;
Dedusting becomes the static device of 2-3 electric field by the static device of 4-5 electric field, reaches efficiency of dust collection near 90%, discharge 150 ℃ of left and right sides flue gases advance wet method lime the desulfurization of gypsum method, reduce desulfurization temperature, improve SO
2Removal efficiency.
2 spray liquids adopt and finish oxidation at concentrated oxidizing tower outer wall vertical overflow ingress of air.Discarded at present both at home and abroad with the equipment of air blast drum air oxidation spray liquid in oxidation pond, improve the oxidation efficiency hundred times, discarded oxidation pond and air blast.Replace 3 slush pumps with vertical-overflow, reduce power consumption and advance kilowatts thousand.
The three-dimensional concentration basin of 3 usefulness vertically is connected in series circulatory pool and replaces present oxidation pond level serial connection concentration basin level serial connection circulatory pool again.
4 discarded more than 200 meter high chimneys that flew away pollutant originally.With the high Environment protection chimney of this 80-100 rice.
5 two-stage flue gas wet method spray columns vertically are connected in series the separation equipment of two-stage wet electrostatic tower, replace present only 1 wet method spray column and catalytic unit.
6 usefulness wet method spray columns vertically are connected in series the wet electrostatic tower and replace present wet method high-temperature catalytic equipment.
7 flue gas purifying equipments are by original; The catalytic unit of level serial connection high temperature ammonification, the horizontal layout of level serial connection wet desulfuration tower, smoke stack emission again behind the static device.
This Environment protection chimney patent is; Vertical serial connection wet electrostatic tower behind the wet desulfuration tower vertically is connected in series the wet electrostatic tower after vertically being connected in series dehumidification method denitrification column after flue gas boosts again again, directly discharges.
The purpose of patent coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney of the present invention:
By 2 times " artificial raining " of spray and wet electrostatic, reduce flue-gas temperature.Eliminate whole pollutions of coal-fired flue-gas.
Summary of the invention
Coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney embodiment:
Purification medium; Coal-fired flue-gas.
Technological process;
One, 1 spray column; Behind the flue gas ash removal, behind the 100-200 ℃ of flue gas air intake machine by → direction into (16) spray column in tower through (15) nozzle, circulated sprinkling lime slurry, SO
2Become the calcium bisulfite aqueous solution, cool to 40-50 ℃.
Two, concentrate oxidizing tower; Spray liquid (18) concentration basin that lands into, solid particles sediment to (18) concentration basin outlet at bottom through (19) auger or dewaterer discharging.
(18) clarified solution in the concentration basin overflows to outer wall from (18) concentration basin top perimeter (17) spout hole, vertically is exposed to and flows down into (21) chute in the air.Advance after wall hole.
(22) circulatory pool.(22) slurries adjustment pH value boosts into by (23) circulating pump in the circulatory pool, and (16) spray column is interior to spray.Finish the oxidation of spray liquid, concentrated, heat exchange.
Three, 1 static towers; Flue gas behind the spray becomes vaporific flue gas, carries that the droplet of remaining soot dust granule and spray liquid advances wet electrostatic device (14) (12) behind the electrostatic precipitation secretly, the liquid that electrostatic separation is come out and solid (18) concentration basin that lands into.
Water white transparency flue gas after the electrostatic separation is crossed (10) blower fan, advances smoke-box (11).
Four, flue gas advances (6) nitric acid circulating slot headroom after (5) flue gas bend pipe.Advance (4) nitric acid spray column.
Five, 2 spray columns; In tower through the vaporific spray flue gas of nozzle (3).Spray liquid (6) the nitric acid circulating slot that lands into is through (7) sour pump (4) nitric acid spray column spray that boosts into.
Six, 2 static towers; Vaporific flue gas behind the spray is carried nitric acid droplet behind the spray secretly and is advanced (1) wet electrostatic device and isolate liquid nitric acid liquid (6) the nitric acid circulating slot that lands into.
Seven, the wet electrostatic device is isolated water white transparency normal temperature flue gas and is discharged into atmosphere from (1) static device outlet by → direction.
Effect; Reach and eliminate nitrogen oxide and thermal pollution.Discharge the CO of colourless, transparent, saturated, nitrogenfree oxide and nitrogenfree oxide secondary pollutant and thermal pollution
2Gas.
Concentrate 1 spray column of the vertical serial connection of oxidizing tower, vertically be connected in series the static tower again 1 time, after flue gas boosts, vertically be connected in series spray column again 2 times, vertically be connected in series the static tower again 2 times, flue gas is directly from 2 static tower outlet dischargings.
Description of drawings
Fig. 1, coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney figure.
1 static device, 2 transformers, 3 nozzles, 4 nitric acid spray columns, 5 flue gas bend pipes, 6 nitric acid circulating slots,
7 sour pumps, 8 acid-exhausting valves, 9 water intaking valves, 10 blower fans, 11 smoke-boxes, 12,14 static devices
13 transformers, 15 nozzles, 16 spray columns, 17 spout holes, 18 concentration basins, 19 (auger or dewaterers),
20 concentrate oxidizing tower, 21 chutes, and 22 circulating slots, 23 circulating pumps, flue gas flow direction →.
The specific embodiment
Case; Flue gas medium; Coal-fired flue-gas
Technological process apparatus;
1, flue gas advances (16) spray column after the dedusting, and through nozzle (15) circulated sprinkling alkaline aqueous solution, flue gas becomes vaporific flue gas in tower---1 spray column.
2, (18) concentration basin at (20) oxidation concentration tower top is advanced in the spray liquid vertical landing, solid particles sediment, (19) auger or dewaterer discharging through the bottom.
(18) the concentration basin clarified solution flows out from top perimeter (17) spout hole and flows down from (20) oxidation concentration tower outer wall vertical, advances (21) chute, finishes oxidation and the heat exchange of spray liquid.The liquid via hole advances (22) circulatory pool of (20) oxidation concentration tower bottom in the chute.---concentrate oxidizing tower.
3, become vaporific flue gas behind the flue gas spray and advance (12,14) static device, (13) transformer, vaporific flue gas advance in (12,14) static device, and the liquid mist of suspension is adsorbed the utmost point with solid particle and separates vertical dropping into (18) concentration basin.---1 static tower.
The come out transparent flue gas of pure aneroid, no solid particle of electrostatic separation is crossed (10) blower fan and is advanced (11) smoke-box.Flue gas passes (6) nitric acid circulating slot and advances (4) nitric acid spray groove, and the nitric acid of (6) nitric acid circulating slot advances (7) sour pump and boosts in (4) nitric acid spray column through the rare nitric acid of (3) nozzle circulated sprinkling, and flue gas becomes vaporific flue gas.-2 spray nitric acid towers.
4, after concentration of nitric acid reaches commercial standards in the circulating slot, discharge through (8) acid-exhausting valve.
The remainder red fuming nitric acid (RFNA) adds water through (9) water intaking valve, becomes rare nitric acid spray flue gas in (7) sour pump boosts into (4) nitric acid spray column, and flue gas becomes, and vaporific flue gas, vaporific flue gas advance (1) static device,
5, vaporific flue gas advances (1) static device to be separated, and isolates nitric acid (6) the nitric acid circulating slot that lands into, isolates aneroid, the pure CO of normal temperature
2Gas is from-2 wet electrostatic towers of (1) static device top outlet discharging.
6, effect; Discharging normal temperature CO
2Gas, dust concentration near 0 cubic meter, efficiency of dust collection is near 100%.
SO
2With secondary pollutant concentration near 0 cubic meter, desulfurization, except liquid efficient near 100%.
NO
XConcentration near 0 cubic meter, denitrifying oxide efficient is near 100%
NO
XSecondary pollutant concentration near 0 cubic meter, except liquid efficient near 100%.
Discharging flue gas normal temperature, colourless, transparent, saturated, blackness is less than 1.
Discharged waste---standard finished products nitric acid.
Claims (8)
1. coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney embodiment;
Purification medium; Coal-fired flue-gas
Technological process;
One, 1 spray column; Advance spray column (16) 1 times by → direction behind the laggard blower fan of flue gas ash removal, in tower through (15) nozzle, circulated sprinkling lime slurry, SO
2Become the calcium bisulfite aqueous solution, cool to 40-50 ℃;
Two, oxidation concentration tower; Spray liquid (18) concentration basin that lands into, solid particles sediment to (18) concentration basin outlet at bottom through (19) auger or dewaterer discharging;
(18) clarified solution in the concentration basin overflows to outer wall from (18) concentration basin top perimeter (17) spout hole, vertically is exposed to and flows down into (21) chute in the air; Advance (22) circulatory pool after wall hole; (22) the interior slurries adjustment of circulatory pool pH value boosts by (23) circulating pump and into sprays in (16) 1 spray columns; Finish the oxidation of spray liquid, concentrated, heat exchange;
Three, 1 static tower; Flue gas behind the spray becomes vaporific flue gas, carries that the droplet of remaining soot dust granule and spray liquid advances wet electrostatic device (14) behind the electrostatic precipitation secretly;
The liquid that electrostatic separation is come out and solid (18) concentration basin that lands into;
Water white transparency flue gas after the electrostatic separation is crossed (10) blower fan, advances smoke-box (11);
Four, flue gas advances (6) nitric acid circulating slot headroom after (5) flue gas bend pipe.Advance 2 spray columns of (4) nitric acid;
Five, 2 spray columns; In tower through the vaporific spray flue gas of nozzle (3); Spray liquid (6) nitre that lands into
The acid circulating slot, boosting into through (7) sour pump, (4) 2 spray columns spray rare nitric acid;
Six, 2 static towers; Vaporific flue gas behind the spray is carried nitric acid droplet behind the spray secretly and is advanced 2 static towers of (1) wet method and isolate liquid nitric acid liquid (6) the nitric acid circulating slot that lands into;
Seven, the wet electrostatic device is isolated water white transparency normal temperature flue gas and is discharged into atmosphere from (1) static device outlet by → direction;
1 spray column of the vertical serial connection of oxidation concentration tower vertically is connected in series the static tower again 1 time, vertically is connected in series flue gas laggard 2 spray columns that boost again, vertically is connected in series the static tower again 2 times, and flue gas is directly from 2 static towers outlet dischargings.
2. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: 1 spray column of the vertical serial connection of oxidation concentration tower, vertically be connected in series the static tower again 1 time, vertically be connected in series 2 spray columns after flue gas boosts again, vertically be connected in series the static tower again 2 times, flue gas is directly from 2 static tower outlet dischargings.
3. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: the water white transparency flue gas after 1 time the static tower separates is crossed (10) blower fan supercharging, (5) the flue gas bend pipe that passes in (6) nitric acid circulating slot advances the spray column bottom space (4) 2 times, and the liquid level in blowback (6) the nitric acid circulating slot is 180 degree vertical lifting again.(5) flue gas bend pipe diameter is little, and flue gas flow rate improves several times relatively.Produce the space between bend pipe and do the interior volume of (6) nitric acid circulating slot.
4. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: (20) oxidation concentration tower is the circulatory pool (22) that the concentration basin (18) on top vertically is connected in series the bottom.
5. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: flue gas is crossed blower fan (10) and is boosted.
6. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: concentration basin (18) upper periphery is established horizontal spout hole (17).
7. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: (20) oxidation concentration tower outer wall is done the oxidation wall.
8. according to claim 1, its feature of coal-fired flue-gas dust-removing and desulfurization denitrogenation Environment protection chimney: two static tower top porcelain vases are established firing equipment.
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| CN2013101906964A CN103263839A (en) | 2013-05-22 | 2013-05-22 | Environment-friendly Coal-fired flue gas dedusting, desulfurizing and denitrifying chimney |
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| CN2013101906964A CN103263839A (en) | 2013-05-22 | 2013-05-22 | Environment-friendly Coal-fired flue gas dedusting, desulfurizing and denitrifying chimney |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837651A (en) * | 2018-06-24 | 2018-11-20 | 江苏兰丰环保科技有限公司 | A kind of desulphurization denitration dedusting collaboration processing unit |
| CN110394043A (en) * | 2019-07-29 | 2019-11-01 | 庄建中 | A kind of flue gas and desulfurizing and denitrifying dedusting demister and technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN101708420A (en) * | 2009-11-24 | 2010-05-19 | 中冶长天国际工程有限责任公司 | Treatment technique for pollutants in sinter fume and spraying and absorbing tower thereof |
| CN102580432A (en) * | 2011-04-21 | 2012-07-18 | 庄建中 | Fume dedusting, desulfurating and denitriding integrated process |
| CN102688644A (en) * | 2012-02-23 | 2012-09-26 | 庄建中 | Dedusting, desulfurization and denitrification environment-friendly chimney |
| CN102974185A (en) * | 2012-11-29 | 2013-03-20 | 上海龙净环保科技工程有限公司 | Modularized integrated smoke purification system and method for removing plurality of pollutants |
-
2013
- 2013-05-22 CN CN2013101906964A patent/CN103263839A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053748A (en) * | 2007-04-30 | 2007-10-17 | 武汉凯迪电力环保有限公司 | Simultaneously removing various pollutant wet ammonia flue gas cleaning technology and system thereof |
| CN101708420A (en) * | 2009-11-24 | 2010-05-19 | 中冶长天国际工程有限责任公司 | Treatment technique for pollutants in sinter fume and spraying and absorbing tower thereof |
| CN102580432A (en) * | 2011-04-21 | 2012-07-18 | 庄建中 | Fume dedusting, desulfurating and denitriding integrated process |
| CN102688644A (en) * | 2012-02-23 | 2012-09-26 | 庄建中 | Dedusting, desulfurization and denitrification environment-friendly chimney |
| CN102974185A (en) * | 2012-11-29 | 2013-03-20 | 上海龙净环保科技工程有限公司 | Modularized integrated smoke purification system and method for removing plurality of pollutants |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837651A (en) * | 2018-06-24 | 2018-11-20 | 江苏兰丰环保科技有限公司 | A kind of desulphurization denitration dedusting collaboration processing unit |
| CN110394043A (en) * | 2019-07-29 | 2019-11-01 | 庄建中 | A kind of flue gas and desulfurizing and denitrifying dedusting demister and technology |
| CN110394043B (en) * | 2019-07-29 | 2022-03-25 | 庄建中 | Device and method for simultaneously desulfurizing, denitrating, dedusting and demisting flue gas |
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Application publication date: 20130828 |