CN201445907U - Wet-process flue gas desulphurizing dual-tower combined treatment device - Google Patents
Wet-process flue gas desulphurizing dual-tower combined treatment device Download PDFInfo
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- CN201445907U CN201445907U CN2009200287010U CN200920028701U CN201445907U CN 201445907 U CN201445907 U CN 201445907U CN 2009200287010 U CN2009200287010 U CN 2009200287010U CN 200920028701 U CN200920028701 U CN 200920028701U CN 201445907 U CN201445907 U CN 201445907U
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Abstract
The utility model relates to a wet-process flue gas desulphurizing dual-tower combined treatment device, which comprises a high-speed absorbing tower and a conventional absorbing tower. A spray device is arranged in each tower. The utility model is characterized in that the flue gas outlet at the top of the high-speed absorbing tower is communicated with the flue gas inlet of the conventional absorbing tower, a slurry pond at the bottom of the high-speed absorbing tower is communicated with a slurry pond at the bottom of the conventional absorbing tower through a communicating pipe, and an oxidation air pipeline is arranged in the communicating pipe; and the slurry inlet of a slurry circulating pump is arranged at the slurry pond at the bottom of the conventional absorbing tower, and the slurry outlet of the slurry circulating pump is connected with the spray devices of the absorbing towers. The utility model has the advantages that the total desulphurization amount of a first-stage absorbing tower and a second-stage absorbing tower can be properly optimized and distributed, the contradiction between desulphurization efficiency and energy and resource consumption is solved, and the performance of the wet-process flue gas desulphurizing device is improved.
Description
Technical field
The utility model relates to a kind of wet flue gas desulfurizer, especially a kind of flue gas desulphurization engineering that is applied to, can realize operation maintenance, the wet process of FGD double tower combined apparatus of, low consumption efficient to guarantee, environmental protection, safe operation belongs to the electric power factory equipment technical field.
Background technology
At present, desulfurizer commonly used adopts dry method or wet method more in the flue gas desulphurization technology.And the wet desulphurization technology is by the main sulfur removal technology technology of most of large-scale thermal power machine group extensive use.The reaction principle of wet desulphurization technology is the same basically, and is also similar on system forms, and main difference is on the pattern of desulfurizer of its core and the structure characteristics are arranged respectively, thereby its desulfuration efficiency and consuming also has nothing in common with each other.Desulfurizer comes branch to mainly contain from structure: packed tower, plate column, liquid column tower, spray column (void tower) and bubble tower.Spray column has not subregion tower, subregion tower and two recycle column.Because spray column belongs to the void tower technology, flue gas resistance is little, and applicability is good, thereby has obtained widespread usage.Simultaneously, also there are shortcomings such as investment is high, operating cost (consumption of energy consumption and absorbent etc.) is high, efficient is low in existing this device.
In the world, from nineteen thirty first commercialization flue gas desulphurization system since the Ahmedabad Lu Si of Britain power plant operation, research and the commercial application to flue gas desulfurization technique obtained fast development at twentieth century in the world.At the initial stage seventies, the U.S. and Japan have begun the construction peak of desulfurizer, have developed a series of wet desulphurization technology.The particularly German biggest market that becomes desulfurizer of the mid-80, Europe.The nineties begins, and the Thailand in Asia, India, Korea S and China also begin development and builds flue gas desulfur device, so far near the peak that reaches construction.But mostly the flue gas desulfur device that China successfully puts into operation is the foreign technology of introduction, the slower development of own technology.The wet process of FGD technology contains aforesaid many technology and dissimilar desulfurizers at present, all often adopt single tower, single tower is means to increase the spray number of plies generally, that have even reach six layers, cause the absorption tower too high, the operation power consumption increases, and exists the contradiction between the desulfuration efficiency and the energy, the resource consumption.
The utility model content
At the deficiencies in the prior art, technical problem to be solved in the utility model is, a kind of wet process of FGD double tower combined apparatus is provided, and to solve the contradiction between the desulfuration efficiency and the energy, the resource consumption, improves the performance of wet flue gas desulfurizer.
For solving the problems of the technologies described above, technical solution adopted in the utility model is, a kind of wet process of FGD double tower combined apparatus, and it comprises high speed absorption tower and conventional absorption tower, is provided with spray equipment in the tower; The exhanst gas outlet at top, high speed absorption tower is communicated with the gas approach on conventional absorption tower, and the bottom stock tank on high speed absorption tower is communicated with by cross over pipe with the bottom stock tank on conventional absorption tower, is provided with the oxidation air pipeline in the cross over pipe; The slurries inlet of slurry circulating pump is arranged on conventional tower bottom stock tank, and the slurries outlet is connected with the spray equipment on absorption tower.
Above-mentioned wet process of FGD double tower combined apparatus, its top on the high speed absorption tower is provided with spray equipment.
Above-mentioned wet process of FGD double tower combined apparatus, it is provided with three layers of spray equipment in conventional absorption tower, be positioned at the below of the conventional demister that is provided with.
Wet process of FGD double tower combined apparatus of the present utility model is reduced absorption tower height, spray average height; Because one-level tower flue gas flow velocity height, spray intensively, reaching under the prerequisite of same desulfuration efficiency, liquid-gas ratio is reduced; Because the oxidation and the solubilizing reaction subregion on absorption tower, mode of oxidizing is for getting in touch with pipeline cloth oxidation air pipeline by a secondary stock tank, conduit section is little, oxidant is concentrated, and has satisfied the requirement of oxidation time, and oxygen is fully used, improved oxidation effectiveness greatly, can suitably reduce oxygen sulphur ratio, reduce the oxidation air amount, make power consumption be reduced; Circulating pump slurries inlet is conventional tower, absorbent all is supplemented to the secondary stock tank, the stock tank pH value is effectively improved, improved the spray effect greatly, thereby having improved desulfuration efficiency. but this device reasonable optimizing is distributed the desulfurization total amount on I and II absorption tower, solve the contradiction between the desulfuration efficiency and the energy, the resource consumption, improve the performance of wet flue gas desulfurizer.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model wet process of FGD double tower combined apparatus.
The specific embodiment
As shown in Figure 1, this wet process of FGD double tower combined apparatus comprises high speed absorption tower 1 and conventional absorption tower 2, is provided with spray equipment 11,21 in the tower; Be provided with spray equipment 11 at 1 top, high speed absorption tower, the exhanst gas outlet 13 of its side is communicated with the gas approach 22 on conventional absorption tower 2, the bottom stock tank 12 on high speed absorption tower 1 is communicated with by cross over pipe 15 with the bottom stock tank 23 on conventional absorption tower 2, is provided with oxidation air pipeline 16 in the cross over pipe 15; The slurries inlet 25 of slurry circulating pump 14 is arranged on the conventional tower bottom stock tank 23, and the slurries outlet is connected with the spray equipment 11,21 on absorption tower 1,2.In the conventional absorption tower 2 three layers of spray equipment 21 are set, are positioned at the below of the conventional demister 24 that is provided with.
This wet process of FGD double tower combined apparatus is reduced absorption tower height, spray average height; Because one-level tower flue gas flow velocity height, spray intensively, reaching under the prerequisite of same desulfuration efficiency, liquid-gas ratio is reduced; Because the oxidation and the solubilizing reaction subregion on absorption tower, mode of oxidizing is for getting in touch with pipeline cloth oxidation air pipeline by a secondary stock tank, conduit section is little, oxidant is concentrated, and has satisfied the requirement of oxidation time, and oxygen is fully used, improved oxidation effectiveness greatly, can suitably reduce oxygen sulphur ratio, reduce the oxidation air amount, make power consumption be reduced; Circulating pump slurries inlet is conventional tower, and absorbent all is supplemented to the secondary stock tank, and the stock tank pH value is effectively improved, and has improved the spray effect greatly, thereby has improved desulfuration efficiency.But this device reasonable optimizing is distributed the desulfurization total amount on I and II absorption tower, solves the contradiction between the desulfuration efficiency and the energy, the resource consumption, improves the performance of wet flue gas desulfurizer.
For example at flue gas SO
2Content 7000mg/Nm
3, first order desulfuration efficiency can reach 60-70%, second level inlet flue gas SO
2Content is 2100-2800mg/Nm
3, the conventional tower in the second level can design three layers of spray.Flue gas at first enters the high speed tower, carry out first order desulfurization, design flue gas flow rate 6-10M/S (flue flue design current velocity generally is not more than 15M/S), low than the flue flow velocity, so the resistance increase is little, but because the flue gas flow rate height, spray intensive, strengthen convection effects, improved gas phase, liquid phase convection effects, improved desulfuration efficiency.Because the flue gas flow rate height, flue gas carries a large amount of water droplets, is entering absorption tower, the second level by the flue gas centrifugal action, makes flue gas enter absorption tower, the second level and obtains initial gross separation; Flue gas is entering the further desulfurization in absorption tower, the second level, and flue gas flow rate is not more than 4M/S, satisfies the demister requirement, and flue gas water content behind demister is not more than 75mg/Nm
3, guarantee that flue gas steam carries the qualified chimney that enters; Secondary tower liquid-gas ratio value guarantees that desulfuration efficiency reaches the design objective requirement, and general the requirement is not less than 95% for the design coal gross efficiency, the check coal according to national standard less than 400mg/Nm
3
This double tower combined apparatus is compared with the single-stage absorption tower of routine, has the following advantages:
1, two towers are set, make the absorption tower total height be reduced, the spray average height reduces greatly, with six layers in single tower is example, does not consider that the stock tank volume increases factor, double tower spraying layer average height decline 3-4 rice, with average 20 meters be example, the total power consumption of slurry circulating pump reduces 15-20%; Consider that the stock tank volume increases factor, double tower spraying layer average height decline 8-10 rice, with average 25 meters be example, the total power consumption of slurry circulating pump reduces 30-40%.
2, because one-level tower flue gas flow velocity height, spray intensively, reaching under the prerequisite of same desulfuration efficiency, liquid-gas ratio is reduced, and generally reduces by 10%, makes power consumption reduce by 10%, and the booster fan power consumption rising that this is caused is very limited.
3, because first grade absorption tower, oxidation and solubilizing reaction subregion, mode of oxidizing is for getting in touch with pipeline cloth oxidation air pipeline by a secondary stock tank, conduit section is little, and it is concentrated that oxidation is got, satisfied the requirement of oxidation time, oxygen is fully used, has improved oxidation effectiveness greatly, can suitably reduce oxygen sulphur ratio, reduce the oxidation air amount, make power consumption be reduced; Circulating pump slurries inlet is conventional tower, and absorbent all is supplemented to the secondary stock tank, and the stock tank pH value is effectively improved, and has improved the spray effect greatly, thereby has improved desulfuration efficiency.
This double tower combined apparatus sulphur content in handling coal be higher than 3% or flue gas in SO
2Content is greater than 7000mg/Nm
3The sulphur coal flue gas time, for guaranteeing qualified discharge, be comparatively desirable in the limestone-gypsum wet desulphurization device, economical, a kind of reliably.
Claims (3)
1. wet process of FGD double tower combined apparatus, it comprises high speed absorption tower and conventional absorption tower, is provided with spray equipment in the tower; It is characterized in that: the exhanst gas outlet at top, described high speed absorption tower is communicated with the gas approach on conventional absorption tower, and the bottom stock tank on high speed absorption tower is communicated with by cross over pipe with the bottom stock tank on conventional absorption tower, is provided with the oxidation air pipeline in the cross over pipe; The slurries inlet of slurry circulating pump is arranged on conventional tower bottom stock tank, and the slurries outlet is connected with the spray equipment on absorption tower.
2. wet process of FGD double tower combined apparatus according to claim 1 is characterized in that: its top on the high speed absorption tower is provided with spray equipment.
3. wet process of FGD double tower combined apparatus according to claim 2 is characterized in that: it is provided with three layers of spray equipment in conventional absorption tower, is positioned at the below of the conventional demister that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200287010U CN201445907U (en) | 2009-06-30 | 2009-06-30 | Wet-process flue gas desulphurizing dual-tower combined treatment device |
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|---|---|---|---|
| CN2009200287010U CN201445907U (en) | 2009-06-30 | 2009-06-30 | Wet-process flue gas desulphurizing dual-tower combined treatment device |
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| CN201445907U true CN201445907U (en) | 2010-05-05 |
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| CN2009200287010U Expired - Fee Related CN201445907U (en) | 2009-06-30 | 2009-06-30 | Wet-process flue gas desulphurizing dual-tower combined treatment device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225304A (en) * | 2011-04-22 | 2011-10-26 | 永兴县皓天环保科技发展有限责任公司 | Twin exhaust gas purifying tower |
| CN102921287A (en) * | 2012-10-30 | 2013-02-13 | 北京国电龙源环保工程有限公司 | Double-tower double-circulation limestone wet method desulfurization device and method |
| WO2013044563A1 (en) * | 2011-09-28 | 2013-04-04 | 华南理工大学 | Dual-chamber multi-absorption wet flue desulfurization device |
| CN103170234A (en) * | 2013-04-01 | 2013-06-26 | 广西电网公司电力科学研究院 | Novel technology for desulfuring and transforming smoke of series absorption tower |
| CN103301740A (en) * | 2013-07-02 | 2013-09-18 | 北京国能中电节能环保技术有限责任公司 | Two-stage absorption differential desulfurizing tower |
| CN103623691A (en) * | 2013-12-24 | 2014-03-12 | 营口东邦冶金设备耐材有限公司 | Flue gas desulfurization device |
| CN103721555A (en) * | 2013-12-24 | 2014-04-16 | 营口东邦冶金设备耐材有限公司 | Combined flue gas desulfurization device |
| CN104174283A (en) * | 2014-09-10 | 2014-12-03 | 北京国能中电节能环保技术有限责任公司 | Bicirculating desulfuration system |
| CN104208966A (en) * | 2014-08-15 | 2014-12-17 | 杭州中环化工设备有限公司 | Technology for processing selenium-containing flue gas in alloy converting furnace |
| CN110882618A (en) * | 2018-09-10 | 2020-03-17 | 黄骅市鑫通机械设备有限公司 | Double-tower desulfurization dust-removing equipment |
-
2009
- 2009-06-30 CN CN2009200287010U patent/CN201445907U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225304B (en) * | 2011-04-22 | 2013-09-18 | 永兴县皓天环保科技发展有限责任公司 | Twin exhaust gas purifying tower |
| CN102225304A (en) * | 2011-04-22 | 2011-10-26 | 永兴县皓天环保科技发展有限责任公司 | Twin exhaust gas purifying tower |
| WO2013044563A1 (en) * | 2011-09-28 | 2013-04-04 | 华南理工大学 | Dual-chamber multi-absorption wet flue desulfurization device |
| CN102921287A (en) * | 2012-10-30 | 2013-02-13 | 北京国电龙源环保工程有限公司 | Double-tower double-circulation limestone wet method desulfurization device and method |
| CN103170234A (en) * | 2013-04-01 | 2013-06-26 | 广西电网公司电力科学研究院 | Novel technology for desulfuring and transforming smoke of series absorption tower |
| CN103301740B (en) * | 2013-07-02 | 2016-02-03 | 北京国能中电节能环保技术有限责任公司 | Two-stage absorbs differential desulfurizing tower |
| CN103301740A (en) * | 2013-07-02 | 2013-09-18 | 北京国能中电节能环保技术有限责任公司 | Two-stage absorption differential desulfurizing tower |
| CN103623691A (en) * | 2013-12-24 | 2014-03-12 | 营口东邦冶金设备耐材有限公司 | Flue gas desulfurization device |
| CN103721555A (en) * | 2013-12-24 | 2014-04-16 | 营口东邦冶金设备耐材有限公司 | Combined flue gas desulfurization device |
| CN104208966A (en) * | 2014-08-15 | 2014-12-17 | 杭州中环化工设备有限公司 | Technology for processing selenium-containing flue gas in alloy converting furnace |
| CN104208966B (en) * | 2014-08-15 | 2016-01-20 | 杭州中环化工设备有限公司 | Process alloy converting furnace is containing the technique of selenium flue gas |
| CN104174283A (en) * | 2014-09-10 | 2014-12-03 | 北京国能中电节能环保技术有限责任公司 | Bicirculating desulfuration system |
| CN110882618A (en) * | 2018-09-10 | 2020-03-17 | 黄骅市鑫通机械设备有限公司 | Double-tower desulfurization dust-removing equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20110630 |