CN102886190B - Technique for desulfurizing flue gas by using activated cokes and device used in technique - Google Patents
Technique for desulfurizing flue gas by using activated cokes and device used in technique Download PDFInfo
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- CN102886190B CN102886190B CN201210400062.2A CN201210400062A CN102886190B CN 102886190 B CN102886190 B CN 102886190B CN 201210400062 A CN201210400062 A CN 201210400062A CN 102886190 B CN102886190 B CN 102886190B
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Abstract
The invention relates to a technique for desulfurizing flue gas by using activated cokes, comprising the following steps of: feeding flue gas: feeding original flue gas in a desulfurization adsorption tower by a flue gas feeder; desulfurizing: enabling the original flue gas fed in the desulfurization adsorption tower to completely contact with activated cokes in the tower, removing SO2 in the original flue gas, and exhausting the pure flue gas subjected to the desulfurization adsorption; recovering activated cokes; absorbing saturated activated cokes, transmitting the saturated activated cokes to a vibrating screen by a conveying mechanism, sorting out qualified activated cokes and feeding the qualified activated cokes in a regeneration tower; and regenerating activated cokes: desorbing the activated cokes by nitrogen heated by an electric heater to release SO2, transmitting SO2 to a sulfuric acid production place by a regeneration fan, cooling the nitrogen by a heat exchanger, and transmitting the nitrogen to the regeneration tower by a heat exchange fan for cooling activated cokes, and feeding the processed activated cokes back to the desulfurization adsorption tower by a chain-bucket transmission mechanism. In the technique, activated cokes are used as the main absorbent which is high in absorbing property and capable of effectively absorbing SO2; and a loop can be changed according to various running situations, so that the technique is suitable for various desulfurization situations and working conditions.
Description
Technical field
The present invention relates to a kind of activated coke desulfurization technique and device thereof.
Background technology
At present, sulfur removal technology adopts limestone desulfurization or ammoniacal liquor desulfurization usually, and these sulfur removal technologies reclaim difficulty, secondary pollution can be produced, and cost is comparatively large, and meanwhile, lime stone belongs to solid housing, poor to gaseous absorptivity, need the energy provided also more, the object of energy-conserving and environment-protective can not be realized, although and the good cost of ammoniacal liquor absorbability is also higher, and the WITH AMMONIA TREATMENT after absorbing comparatively bothers, and is unfavorable for industrial production.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of respond well, environmental protection and energy-conservation activated coke desulfurization technique and device thereof.
To achieve these goals, technical scheme of the present invention is: a kind of activated coke desulfurization technique, comprises the steps:
1. flue gas is sent: send in desulfurization adsorption tower by former flue gas by flue gas pressure fan;
2. desulfurization: the former flue gas entering desulfurization adsorption tower fully contacts with the activated coke in tower, removes the SO in former flue gas
2, pass through smoke stack emission through the neat stress of desulfurization absorption;
3. reclaim activated coke: adsorb saturated activated coke and deliver to vibratory sieve by conveying mechanism, select qualified activated coke through vibrosieve and enter regenerator;
4. regeneration activity is burnt: activated coke discharges SO through electric heater heating and nitrogen desorb
2, SO
2deliver to Sulphuric acid place by regeneration blower fan, nitrogen is lowered the temperature by heat exchanger, then is delivered to regenerator cooling activated coke by heat exchange blower fan, and the activated coke after process sends desulfurization adsorption tower back to through chain bucket transmission mechanism.
Further, described step 1. in when desulfurization adsorption tower is in abnormal condition, former flue gas is directly from smoke stack emission.
Further, described step 3. in underproof activated coke directly discharge.
Further, the described step 4. middle nitrogen lost is supplemented from nitrogen pipeline, and described step 4. middle activated coke of losing is supplemented from feed bin.
Further, in order to realize above-mentioned technique, the invention provides a kind of activated coke desulfurization device, comprise desulfurization adsorption tower, described desulfurization adsorption tower week side by pipeline with for carrying the flue gas pressure fan of former flue gas to be connected, be connected with vibratory sieve by conveying mechanism bottom described desulfurization adsorption tower, described vibratory sieve is connected with regenerator, described regenerator week, side was provided with the electric heater for heating of Activated Jiao, and all sides of described regenerator offer for carrying SO
2sulphuric acid pipeline, described regenerator is connected with desulfurization adsorption tower top by chain bucket transmission mechanism, and described desulfurization adsorption tower top is connected with chimney.
Further, the former gas baffle for controlling former flue gas is provided with between described flue gas pressure fan and desulfurization adsorption tower, described flue gas pressure fan be connected with the by-pass damper corresponding with former gas baffle between gas baffle, be provided with between described desulfurization adsorption tower and chimney for stopping that former flue gas enters the neat stress baffle plate of desulfurization adsorption tower through by-pass damper.
Further, described chain bucket transmission mechanism being provided with the feed bin of supplementary activated coke, described vibratory sieve offering the outlet for discharging defective activated coke.
Further, described regenerator week side be connected with the heat exchanger for reducing nitrogen temperature, be provided with between described heat exchanger and regenerator loop for supplying nitrogen heat exchange blower fan, described regenerator week side be provided with nitrogen and supplement pipeline.
The present invention has the following advantages: adopt activated coke as main absorber, and its absorbent properties are comparatively strong, effectively can absorb SO
2, meanwhile, have employed again other mechanisms and intermediate product and adminicle recycled, environmental protection can additionally reduce economic loss, in addition, operating loop can be changed for different operation conditions, be applicable to various desulphurization occasions and operating mode.
Accompanying drawing explanation
Fig. 1 is the process chart of the embodiment of the present invention.
Fig. 2 is the structure drawing of device of the embodiment of the present invention.
In figure: 1-desulfurization adsorption tower, 2-flue gas pressure fan, 3-conveying mechanism, 4-vibratory sieve, 5-regenerator, 6-electric heater, 7-Sulphuric acid pipeline, 8-chain bucket transmission mechanism, 9-chimney, the former gas baffle of 10-, 11-by-pass damper, 12-neat stress baffle plate, 13-feed bin, 14-outlet, 15-heat exchanger, 16-heat exchange blower fan, 17-nitrogen supplements pipeline.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated.
With reference to figure 1, a kind of activated coke desulfurization technique, comprises the steps:
1. flue gas is sent: send in desulfurization adsorption tower by former flue gas by flue gas pressure fan 2;
2. desulfurization: the former flue gas entering desulfurization adsorption tower 1 fully contacts with the activated coke in tower, removes the SO in former flue gas
2, discharged by chimney 9 through the neat stress of desulfurization absorption;
3. reclaim activated coke: adsorb saturated activated coke and deliver to vibratory sieve 4 by conveying mechanism 3, sub-elect qualified activated coke through vibratory sieve 4 and enter regenerator 5;
4. regeneration activity is burnt: activated coke heats through electric heater 6 and nitrogen desorb discharges SO
2, SO
2deliver to Sulphuric acid place by regeneration blower fan, nitrogen is lowered the temperature by heat exchanger 15, then is delivered to regenerator 5 desorb again by heat exchange blower fan 16, and the activated coke after process sends desulfurization adsorption tower 1 back to through chain bucket transmission mechanism 8.
In the present embodiment, described step 1. in when desulfurization adsorption tower is in abnormal condition, former flue gas directly discharges from chimney 9.
In the present embodiment, described step 3. in underproof activated coke directly discharge.
In the present embodiment, the described step 4. middle nitrogen lost is supplemented from nitrogen pipeline, and described step 4. middle activated coke of losing is supplemented from feed bin 13.
In the present embodiment, with reference to figure 2, in order to realize above-mentioned technique, the invention provides a kind of activated coke desulfurization device, comprise desulfurization adsorption tower 1, described desulfurization adsorption tower 1 week side by pipeline with for carrying the flue gas pressure fan 2 of former flue gas to be connected, be connected with vibratory sieve 4 by conveying mechanism 3 bottom described desulfurization adsorption tower 1, described vibratory sieve 4 is connected with regenerator 5, and described regenerator 5 weeks sides are provided with the electric heater 6 for heating of Activated Jiao, and described regenerator 5 weeks sides offer for carrying SO
2sulphuric acid pipeline 7, described regenerator 5 is connected with desulfurization adsorption tower 1 top by chain bucket transmission mechanism 8, and described desulfurization adsorption tower 1 top is connected with chimney 9.
In the present embodiment, the former gas baffle 10 for controlling former flue gas is provided with between described flue gas pressure fan 2 and desulfurization adsorption tower 1, described flue gas pressure fan 2 be connected with the by-pass damper 11 corresponding with former gas baffle 10 between gas baffle, be provided with between described desulfurization adsorption tower 1 and chimney 9 for stopping that former flue gas enters the neat stress baffle plate 12 of desulfurization adsorption tower 1 through by-pass damper 11.
During work, when desulfurization adsorption tower 1 normally works, former flue gas enters desulfurization adsorption tower 1 from former gas baffle 10, after decomposition, neat stress discharges from neat stress baffle plate 12 to chimney 9, and when desulfurization adsorption tower 1 is improper, former flue gas directly enters chimney 9 from by-pass damper 11 and discharges.
In the present embodiment, described chain bucket transmission mechanism 8 being provided with the feed bin 13 of supplementary activated coke, described vibratory sieve 4 offering the outlet 14 for discharging defective activated coke.
In the present embodiment, described regenerator week side be connected with the heat exchanger 15 for reducing nitrogen temperature, be provided with between described heat exchanger 15 and regenerator loop for supplying nitrogen heat exchange blower fan 16, described regenerator week side be provided with nitrogen and supplement pipeline 17.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. an activated coke desulfurization device, it is characterized in that, comprise desulfurization adsorption tower, described desulfurization adsorption tower week side by pipeline with for carrying the flue gas pressure fan of former flue gas to be connected, the former gas baffle for controlling former flue gas is provided with between described flue gas pressure fan and desulfurization adsorption tower, described flue gas pressure fan is connected with the by-pass damper corresponding with former gas baffle with between former gas baffle, be connected with vibratory sieve by conveying mechanism bottom described desulfurization adsorption tower, described vibratory sieve offers the outlet for discharging defective activated coke, described vibratory sieve is connected with regenerator, the all sides of described regenerator are provided with the electric heater for heating of Activated Jiao, the all sides of described regenerator are connected with the heat exchanger for reducing nitrogen temperature, be provided with between described heat exchanger and regenerator loop for supplying nitrogen heat exchange blower fan, the all sides of described regenerator are provided with nitrogen and supplement pipeline, the all sides of described regenerator offer for carrying SO
2sulphuric acid pipeline, described regenerator is connected with desulfurization adsorption tower top by chain bucket transmission mechanism, described chain bucket transmission mechanism is provided with the feed bin of supplementary activated coke, described desulfurization adsorption tower top is connected with chimney, is provided with for stopping that former flue gas enters the neat stress baffle plate of desulfurization adsorption tower through by-pass damper between described desulfurization adsorption tower and chimney.
2. an activated coke desulfurization technique, is characterized in that, adopts activated coke desulfurization device as claimed in claim 1, and comprises the steps:
1. flue gas is sent: send in desulfurization adsorption tower by former flue gas by flue gas pressure fan; When desulfurization adsorption tower is in abnormal condition, former flue gas is directly from smoke stack emission;
2. desulfurization: the former flue gas entering desulfurization adsorption tower fully contacts with the activated coke in tower, removes the SO in former flue gas
2, pass through smoke stack emission through the neat stress of desulfurization absorption;
3. reclaim activated coke: adsorb saturated activated coke and deliver to vibratory sieve by conveying mechanism, select qualified activated coke through vibrosieve and enter regenerator, underproof activated coke is directly discharged;
4. regeneration activity is burnt: the nitrogen desorb that activated coke heats through electric heater discharges SO
2, SO
2sulphuric acid place is delivered to by regeneration blower fan, nitrogen is lowered the temperature by heat exchanger, then is delivered to regenerator cooling activated coke by heat exchange blower fan, and the nitrogen of loss supplements from nitrogen pipeline, the activated coke of loss is supplemented from feed bin, and the activated coke after process sends desulfurization adsorption tower back to through chain bucket transmission mechanism.
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| CN201210400062.2A CN102886190B (en) | 2012-10-20 | 2012-10-20 | Technique for desulfurizing flue gas by using activated cokes and device used in technique |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103405991B (en) * | 2013-08-22 | 2015-04-08 | 上海克硫环保科技股份有限公司 | Energy-efficient comprehensive desulfurization and purification system and method for active coke of different flue gases |
| CN103894040B (en) * | 2014-03-24 | 2016-01-20 | 中国科学院过程工程研究所 | A kind of activated coke moving bed modular unit for flue gas desulfurization and denitrification |
| CN104368219B (en) * | 2014-11-07 | 2016-07-06 | 紫金铜业有限公司 | A kind of metallurgical off-gas acid-making tail gas desulfurization regenerative system |
| CN104492225A (en) * | 2014-11-10 | 2015-04-08 | 来宾华锡冶炼有限公司 | Method for processing sulfur dioxide flue gas from acid making and processing system |
| CN109794146B (en) * | 2019-03-28 | 2024-04-26 | 中冶南方都市环保工程技术股份有限公司 | Grate-rotary kiln SNCR/SCR denitration and active coke desulfurization combined system and process |
| CN110075662A (en) * | 2019-05-31 | 2019-08-02 | 中石化炼化工程（集团）股份有限公司 | The device and method of SOx and NOx pollutant in a kind of removing regeneration fume from catalytic cracking |
| CN113120871A (en) * | 2020-01-16 | 2021-07-16 | 吉林紫金铜业有限公司 | Method for heating desulfurization nitrogen in acid preparation by smelting flue gas |
| CN111701408A (en) * | 2020-07-27 | 2020-09-25 | 重庆鲍斯净化设备科技有限公司 | High-efficiency adsorption type compressed air drying system |
| CN111774046A (en) * | 2020-07-27 | 2020-10-16 | 北京石油化工工程有限公司 | Liquid-phase hydrocarbon sulfur dioxide adsorbent regeneration system and method |
| CN113648808A (en) * | 2021-08-31 | 2021-11-16 | 中冶华天工程技术有限公司 | Activated coke desulfurization and denitrification process based on synergistic effect of ozone and ammonia gas |
| CN115178089B (en) * | 2022-08-11 | 2024-01-23 | 国能锅炉压力容器检验有限公司 | Purifying and regenerating one-tower carbon-based catalyst flue gas treatment device |
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| CN202010498U (en) * | 2011-04-08 | 2011-10-19 | 中国电力工程顾问集团公司 | Activated coke regeneration heating system in flue gas desulfurization system of activated coke boiler |
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| CN202010498U (en) * | 2011-04-08 | 2011-10-19 | 中国电力工程顾问集团公司 | Activated coke regeneration heating system in flue gas desulfurization system of activated coke boiler |
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