CN100486673C - Adsorption tower smoke directly ventilating technology - Google Patents
Adsorption tower smoke directly ventilating technology Download PDFInfo
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- CN100486673C CN100486673C CNB200710078583XA CN200710078583A CN100486673C CN 100486673 C CN100486673 C CN 100486673C CN B200710078583X A CNB200710078583X A CN B200710078583XA CN 200710078583 A CN200710078583 A CN 200710078583A CN 100486673 C CN100486673 C CN 100486673C
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Abstract
The present invention discloses direct absorption tower fume exhausting process, which includes the following steps: 1. setting the absorption tower and one chimney superposed integrally on the absorption tower and communicated to the inner cavity of the absorption tower; 2. preparing limestone slurry; and 3. absorbing SO2 fume in the total desulfurizing rate up to 96 %. The present invention without fume heat exchanger, flue and joint has lowered resistance to fume and low cost.
Description
Technical field
The invention belongs to the flue gas desulfurization field, specifically, relate to a kind of fume emission technology.
Background technology
Along with the strictness day by day of China's Air Pollution Prevention Law rule, the flue gas in power station boiler desulfurization is imperative, and flue gas desulfurization technique is promotion and application promptly.Present domestic operation and in the desulfurizer of building, wet desulphurization accounts for more than 90%, and the flue gas after the wet desulphurization is mostly by smoke stack emission, chimney is the discharging modes of a kind of high investment, high flow rate, maximum discharge, difficult circulation, poor efficiency, therefore, in wet desulfurization system, select the fume emission mode to take all factors into consideration from aspects such as environmental protection, economy and technology.
Flue gas promotes SO in the flue gas by the cooling of flue gas heat exchange device after the booster fan pressurization
2Absorption, enter the absorption tower through flue then, chimney and absorption tower split design are come out from the upper end on absorption tower through the clean flue gas after the desulfurization of absorption tower, heat of the corrosion of alleviation low temperature saturated flue gas again through the flue gas heat exchange device, discharge from chimney through flue at last chimney.
Its shortcoming is: floor space is big, and some reconstruction unit can't adopt owing to the space is limited; Because chimney is than higher, it is many to build the required raw material of chimney, and will do corresponding anti-corrosion measure, so the chimney cost is very high.
Summary of the invention
The purpose of this invention is to provide a kind of adsorption tower smoke directly ventilating technology.
The object of the present invention is achieved like this:
Step 1, the absorption tower is set, the overlapping chimney in absorption tower upper end, and communicate with the absorption tower inner chamber, and form an integral body, this chimney top is cylinder, the bottom is cone, and this cone larger diameter end is connected and equal diameters with cylindrical absorbent cat head end, and bottom, described absorption tower is provided with the demist layer for oxidation pond, top, this demist layer below is provided with spraying layer, offers into mouth at the absorption tower sidewall between oxidation pond and spraying layer;
Step 3, SO
2The absorption of flue gas, other booster fan and the circulating pump of being provided with on described absorption tower, wherein booster fan is communicated with the mouth that advances on absorption tower by pipeline, circulating pump connects the spraying layer other end by pipeline one end and stretches in the oxidation pond on absorption tower, flue gas directly enters in the absorption tower after being boosted by booster fan, slurries in the absorption tower are delivered to tower top spraying layer by circulating pump from the oxidation pond of bottom, absorption tower, slurries atomize through spraying layer, atomization slurry passes through the absorption tower from top to bottom, with advance the flue gas adverse current that mouth comes in from absorption tower bottom and contact concurrent biochemical reaction, flow to the oxidation pond of bottom, absorption tower behind the generation calcium sulfite, flue gas upwards directly enters atmosphere from chimney along the absorption tower after desulfurizing and purifying is removed water smoke.
The adsorption tower smoke directly ventilating technology that the integrated design that the present invention adopts chimney to build the top, absorption tower in forms reduces flue and bend setting, reduces the flue gas system resistance, reduces crushing, reduces the booster fan energy consumption simultaneously, reduces cost of investment and operating cost expense.Build chimney in the absorption tower top, absorption tower body (about 30 meters high) can be used as the part of chimney, directly builds chimney material and cost such as anticorrosion that chimney just can be saved 30 meters height at the top, absorption tower, reduction desulfurization project cost; This technology can be saved traditional flue gas heat exchange device, reduces huge cost of equipment and has also saved operating cost simultaneously; The integrated design of chimney being built in the top, absorption tower can reduce system's floor space, overcome the reality of land used anxiety, particularly especially practical for some old unit reconstruction projects, because all there is the situation of insufficient space in many old units, also brought convenience simultaneously for technological improvement; The desulfuration efficiency of the adsorption tower smoke directly ventilating technology that the integrated design that the present invention adopts chimney to build the top, absorption tower in forms can be up to 96%.
The present invention compared with prior art has following beneficial effect:
1, reduces flue and bend setting, reduce the flue gas system resistance, reduce crushing, reduce the booster fan energy consumption simultaneously, reduce cost of investment and operating cost expense.
2, save the investment of flue gas heat exchange apparatus, and operating cost.
3, need not to establish in addition flue and connect chimney, reduce settings such as flue connector.
4, the required floor space of whole system is little, has saved the chimney expenditure of construction of 30 meters height simultaneously.
5, desulfuration efficiency height, desulfurization degree can reach more than 96%.
The specific embodiment
One power plant, exhaust gas volumn is 1,150,000 Nm
3/ h; Import SO
2Content is 980mg/Nm
3The Ca/s ratio is 1.025, and desulfurization degree reaches 96%; The chimney height of building the top, absorption tower in is about 120m.Whole process step is as follows:
Step 1, absorption tower 2 is set, the overlapping chimney 3 in 2 upper ends, absorption tower, and communicate with absorption tower 2 inner chambers, and form an integral body, these chimney 3 tops are cylinder, the bottom is cone, and this cone larger diameter end is connected and equal diameters with cylindrical absorbent tower 2 tops, and 2 bottoms, described absorption tower are that oxidation pond 2b, top are provided with demist layer 2d, this demist layer 2d below is provided with spraying layer 2c, offers into mouth 2a at absorption tower 2 sidewalls between oxidation pond 2b and spraying layer 2c;
Step 3, SO
2The absorption of flue gas, at described absorption tower 2 other booster fan 1 and the circulating pumps 4 of being provided with, wherein booster fan 1 is communicated with the mouth 2a that advances on absorption tower 2 by pipeline, circulating pump 4 connects the spraying layer 2c other end by pipeline one end and stretches in the oxidation pond 2b on absorption tower 2, flue gas directly enters in the absorption tower 2 after being boosted by booster fan 1, slurries in the absorption tower 2 are delivered to tower top spraying layer 2c by the oxidation pond 2b of circulating pump 42 bottoms from the absorption tower, slurries atomize through spraying layer 2c, atomization slurry is from top to bottom by absorption tower 2, with from the absorption tower 2 bottoms advance the flue gas adverse current that mouth 2a comes in and contact concurrent biochemical reaction, generate the oxidation pond 2b that flows to 2 bottoms, absorption tower behind the calcium sulfite, flue gas 2 upwards directly enters atmosphere from chimney 3 along the absorption tower after desulfurizing and purifying is removed water smoke.The whole system desulfurization degree reaches 96%, and the flue gas system resistance is littler, reduces the booster fan energy consumption simultaneously, reduces cost of investment and operating cost expense.
Claims (1)
1, a kind of adsorption tower smoke directly ventilating technology is characterized in that, described adsorption tower smoke directly ventilating technology carries out as follows:
Step 1, absorption tower (2) is set, upper end, absorption tower (2) overlapping chimney (3), and communicate with absorption tower (2) inner chamber, and form an integral body, this chimney (3) top is cylinder, the bottom is cone, this cone larger diameter end is connected and equal diameters with cylindrical absorbent tower (2) top, bottom, described absorption tower (2) is provided with demist layer (2d) for oxidation pond (2b), top, this demist layer (2d) below is provided with spraying layer (2c), offers into mouth (2a) at absorption tower (2) sidewall that is positioned between oxidation pond (2b) and the spraying layer (2c);
Step 2 is made lime stone slurry, and configuration lime stone slurry concentration is 30～40%, and lime stone slurry pH is alkalescence 8-10, and the temperature of lime stone slurry is a room temperature, then lime stone slurry is delivered to the oxidation pond (2b) of absorption tower (2);
Step 3, SO
2The absorption of flue gas, at described absorption tower (2) other booster fan (1) and the circulating pump (4) of being provided with, wherein booster fan (1) is communicated with the mouth (2a) that advances of absorption tower (2) by pipeline, and circulating pump (4) connects spraying layer (2c) other end by pipeline one end and stretches in the oxidation pond (2b) of absorption tower (2); Flue gas directly enters in the absorption tower (2) after being boosted by booster fan (1), slurries in the absorption tower (2) are delivered to tower top spraying layer (2c) by the oxidation pond (2b) of circulating pump (4) (2) bottom from the absorption tower, slurries atomize through spraying layer (2c), atomization slurry is from top to bottom by absorption tower (2), with from the absorption tower (2) bottom advance the flue gas adverse current that cigarette (2a) comes in and contact concurrent biochemical reaction, flow to the oxidation pond (2b) of bottom, absorption tower (2) behind the generation calcium sulfite, (2) upwards directly enter atmosphere from chimney (3) to flue gas along the absorption tower after desulfurizing and purifying is removed water smoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710078583XA CN100486673C (en) | 2007-06-06 | 2007-06-06 | Adsorption tower smoke directly ventilating technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710078583XA CN100486673C (en) | 2007-06-06 | 2007-06-06 | Adsorption tower smoke directly ventilating technology |
Publications (2)
| Publication Number | Publication Date |
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| CN101099918A CN101099918A (en) | 2008-01-09 |
| CN100486673C true CN100486673C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710078583XA Active CN100486673C (en) | 2007-06-06 | 2007-06-06 | Adsorption tower smoke directly ventilating technology |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732950A (en) * | 2008-11-20 | 2010-06-16 | 张建云 | Waste gas recovering device |
| CN101601963B (en) * | 2009-06-02 | 2012-07-04 | 张蕊 | Smoke purification system and method thereof |
| CN103721545A (en) * | 2013-12-30 | 2014-04-16 | 陕西大唐新能电力设计有限公司 | Boiler smoke processing method |
| CN104353350B (en) * | 2014-12-02 | 2016-08-24 | 成都华西堂投资有限公司 | The flue gas purifying technique realized based on absorbent pretreatment |
| CN104383797B (en) * | 2014-12-02 | 2017-01-04 | 成都华西堂投资有限公司 | The wet-dry change Recovery Purifying of a kind of flue gas processes technique |
| CN104399368B (en) * | 2014-12-02 | 2016-09-14 | 成都华西堂投资有限公司 | Flue gas purifying method realizes the flue gas injection conveying technique of absorbent pretreatment |
| CN105944544A (en) * | 2016-07-13 | 2016-09-21 | 北京华福工程有限公司 | Petrochemical acidic tail gas treatment system |
| CN107940492A (en) * | 2017-12-07 | 2018-04-20 | 天津华赛尔传热设备有限公司 | A kind of white absorption tower that disappears of heating agent circulation |
| CN108686495A (en) * | 2018-06-21 | 2018-10-23 | 佛山赛因迪环保科技有限公司 | A kind of smoke processing system for ceramic industry |
| CN110013741B (en) * | 2019-05-15 | 2021-08-24 | 山东洲星生物技术有限公司 | Desulfurization method for flue desulfurization assembled module |
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| CN1491738A (en) * | 2002-10-22 | 2004-04-28 | 熊天渝 | Washing system for adding magnesia lime/lime rock for removing SO2 and producing gypsum simultaneously |
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| CN1864811A (en) * | 2006-04-10 | 2006-11-22 | 广州市天赐三和环保工程有限公司 | Fume desulfurizing process employing multiple circulation and stable double alkali method and apparatus |
| CN1923339A (en) * | 2006-08-18 | 2007-03-07 | 浙江天蓝脱硫除尘有限公司 | Fume desulfurizing process with enhancement lime method |
| CN2894808Y (en) * | 2006-03-30 | 2007-05-02 | 国电科技环保集团有限公司 | Dual circulation circuit limestone/lime-gypsum wet flue gas desulfurizing apparatus |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1491738A (en) * | 2002-10-22 | 2004-04-28 | 熊天渝 | Washing system for adding magnesia lime/lime rock for removing SO2 and producing gypsum simultaneously |
| CN2761251Y (en) * | 2005-01-14 | 2006-03-01 | 浙江大学 | Smoke desulfurization device using underflow bialkali method |
| CN2813074Y (en) * | 2005-08-16 | 2006-09-06 | 孙克勤 | Gypsum slurry dewatering device in wet-process flue gas desulfurizing system |
| CN2894808Y (en) * | 2006-03-30 | 2007-05-02 | 国电科技环保集团有限公司 | Dual circulation circuit limestone/lime-gypsum wet flue gas desulfurizing apparatus |
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| CN101099918A (en) | 2008-01-09 |
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