CN101721901A - Flue gas desulfurization and denitration purifying device in chimney of horizontal flue - Google Patents
Flue gas desulfurization and denitration purifying device in chimney of horizontal flue Download PDFInfo
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- CN101721901A CN101721901A CN201010031308A CN201010031308A CN101721901A CN 101721901 A CN101721901 A CN 101721901A CN 201010031308 A CN201010031308 A CN 201010031308A CN 201010031308 A CN201010031308 A CN 201010031308A CN 101721901 A CN101721901 A CN 101721901A
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Abstract
The invention discloses a flue gas desulfurization and denitration purifying device in a chimney of a horizontal flue, comprising a purifying system in the horizontal flue, a purifying system in the chimney and an absorbing agent system, wherein the purifying system in the horizontal flue is in a dual-layer overflow-free sieve plate structure formed by sieve plate frames and sieve plates and provided with a front baffle and a rear baffle, so that flue gas passes through the sieve plate on the lower layer and enters the sieve plate on the upper layer and a dual-layer washing and absorbing process from top to bottom is formed. The purifying system in the chimney comprises water baffle frames, corrugated water baffles and a header tank which are arranged at the bottom in the chimney along the incline plane; and for air inlet systems at two sides, the water baffles on two sides justly form a V-shaped structure. The absorbing agent system comprises a sedimentation pond, a pulp-preparing pond, a circulating pump and a pipeline. The invention enables the flue gas purification process of a coal burning boiler to be finished in the horizontal flue and the chimney, thereby simplifying flue gas purifying systems of coal-burning thermal power plants; desulfurization and denitration devices are arranged in the flue and the chimney, thus the occupied area of the system is reduced and the purification efficiency is high; and the invention is especially suitable for the field of flue gas purification in medium-small coal-burning thermal power systems.
Description
[technical field]:
The invention belongs to environmental protection technical field, particularly a kind of flue gas desulfurization and denitrification purifier.
[background technology]:
The multi-tube dust cleaner form of connecting with desulfurizer is adopted in the most of Industrial Boiler gas cleaning of China more, the large power plant use multistage electrostatic dust removal device form of connecting with desulfurizer.For Industrial Boiler, also occurred some dust-removal and desulfurizing equipment on the market, but its system improves inadequately and there is defective in structure.Along with the raising of emission request, some producers added one-level simple desulfurization device behind multi-tube dust cleaner in recent years, and the efficient of desulfurization and dedusting still can not satisfy existing environmental emission standard.
For satisfying the requirement of environment-friendly engineering, centering Small-scale Heat Power Plant boiler, the following problem of domestic desulfurization product ubiquity: device systems is numerous and diverse, and operation sequence is not suitable for middle-size and small-size user; Initial cost height, operating cost are big, the flue gas with water after the processing, air-introduced machine cisco unity malfunction; Fouling, grey stifled appears when adding the alkali operation; Flue gas resistance is big, and the energy consumption height needs more ventilating fan, and flue gas purification system can not normally move and carry out effective flue gas desulfurization denitration dust-removing.
The flue gas purification system of introducing mainly is to satisfy big capacity, the needs of high parameter fired power generating unit flue gas desulfurization, and its system perfecting, reliable.But there is the cost of equipment height in the gas cleaning engineering that this system is used for vast Industrial Boiler of China and middle-size and small-size coal-fired thermal power factory, operation complexity, problems such as operating cost height.
Abroad on the Cheng Shu sulfur removal technology basis and guarantee on the basis of normal desulfurization, development be fit to the vast Industrial Boiler of China and middle-size and small-size thermal power plant boiler efficiently, the combined type purifier of low-resistance and dedusting, desulfurization and denitrification integral is very necessary.
[summary of the invention]: the present invention seeks to overcome the prior art above shortcomings, a kind of flue gas desulfurization and denitration purifying device in chimney of horizontal flue is provided.This device can be applicable in the gas cleaning engineering of middle-size and small-size coal-fired thermal power factory, is implemented in desulfuring and denitrifying apparatus is installed in flue and the chimney, can save installing space, saves construction fund, is a kind of flue gas purifying method of science.
Flue gas desulfurization and denitration purifying device in chimney of horizontal flue provided by the invention, comprise purification systems and the interior purification systems of the chimney that is arranged at the chimney inner bottom part in the horizontal flue that is arranged in the horizontal flue, purification systems is double-deck no overflow sieve-plate structure in the described horizontal flue, composition comprises: the sieve plate framework, the sieve plate framework is arranged in the horizontal flue by bottom support and does not contact with walling of flue, be provided with sieve plate in the sieve plate framework, sieve plate framework front end end face and extend upwardly to walling of flue and be provided with front apron, sieve plate back-end framework end face and extend downward walling of flue and be provided with backboard, sieve plate framework top is provided with sprinkler part, sieve plate framework below is provided with the backwash sprinkler part, and the front of sieve plate framework also is provided with pre-sprinkler part; Purification systems comprises in the chimney: be positioned at the water fender framework of the chimney inner bottom part of horizontal flue interface along the inclined-plane layout, be provided with the ripple water fender in the water fender framework, and water fender framework and ripple water fender meet to airintake direction, and are provided with water leg below the water fender framework.Oblique upper at the ripple water fender also is provided with the backwash sprinkler part.
This purifier also comprises absorbent system simultaneously, the contained parts of described absorbent system are the usefulness that forms desulfurization denitrification agent preparation, circulation, sedimentation and processing capacity, its composition comprises: with pipeline UNICOM settling tank, slurrying pond and absorbent pond together, after the circulation fluid in the purification systems flows into the absorbent pond by the road in purification systems and the chimney in the horizontal flue, alkali lye in the slurrying pond enters in the settling tank again, and the absorbent regeneration in the settling tank is recycled water pump and sends purification systems back to and recycle.
Absorbent is recycled pump and sucks, and delivers into the gas cleaning system by pipeline, the pernicious gas reaction in absorbent and the flue gas, and product enters settling tank with lixivium, precipitates in settling tank through air contact (aeration) generation precipitum and dust.Circulation fluid adds alkali lye in the slurrying pond and the absorbent in the absorbent pond in flow process, the absorbent of regeneration is recycled water pump and sends purification systems back to and recycle.In running,, can change the absorbent addition according to the variation of returning the pH value in the liquid for guaranteeing certain purification efficiency.
Advantage of the present invention and good effect:
The present invention is a kind of gas cleaning product that takes up an area of space, the investment of minimizing system of saving.Flue gas desulfurization and denitration purifying device in chimney of horizontal flue utilizes the concrete flue and the chimney of original steam power plant building, the desulphurization denitration parts are installed additional in portion within it, make full use of the space of flue and chimney, reduce the occupation of land space of desulphurization denitration tower, simplify flue gas purification system, reduced environmental protection investments.
The present invention has simplified complicated desulphurization system, has increased the denitration function, has reduced the desulfurization expense, is convenient to operation, reliable, can be used for newly-built and is building the gas cleaning of boiler, and the gas cleaning that also can be used for existing middle-size and small-size thermal power plant boiler is engineered.
[description of drawings]:
Fig. 1 is the viewgraph of cross-section of flue gas desulfurization and denitration purifying device in chimney of horizontal flue;
Fig. 2 is the flow chart of flue gas desulfurization and denitration purifying device in chimney of horizontal flue.
Among the figure, 1 pre-sprinkler part, 2 front aprons, 3 backwash sprinkler parts, 4 sieve plate frameworks, 5 backboards, 6 sieve plates, 7 sprinkler parts, 8 anticorrosive coats, 9 water fender frameworks, 10 ripple water fenders, 11 backwash sprinkler parts, 12 water legs, 13 settling tanks, 14 slurrying ponds, 15 circulating pumps, 16 pipelines, 17 absorbent ponds.
[specific embodiment]:
Embodiment 1:
The invention provides flue gas desulfurization and denitration purifying device in chimney of horizontal flue, comprise purification systems in the horizontal flue, the interior purification systems of chimney, absorbent system.
Purification systems is double-deck no overflow sieve-plate structure in the wherein said horizontal flue, be used to purify flue gas, its composition comprises as shown in Figure 1: 1 pre-sprinkler part, 2 front aprons, 3 backwash sprinkler parts, 4 sieve plate frameworks, 5 backboards, 6 sieve plates, 7 sprinkler parts, 8 anticorrosive coats.
Wherein: pre-sprinkler part 1 is a first order flue gas washing process, and front apron 2 blocks flue gas in the horizontal flue with backboard 5, and the guiding flue gas enters the washing bed.Sieve plate framework 4 is formed the washing bed with sieve plate 6.Anticorrosive coat 8 on the flue inwall is the corrosion of protection level concrete flue.
Purification systems as shown in Figure 2 in the described chimney, comprise: be positioned at the water fender framework 9 of the chimney inner bottom part of horizontal flue interface along the inclined-plane layout, be provided with ripple water fender 10 in the water fender framework, and water fender framework and ripple water fender meet to airintake direction, and are provided with water leg 12 below the water fender framework.Is oblique upper at the ripple water fender also provided with the backwash sprinkler part? 11.For purification systems in the chimney of bilateral air inlet, wherein the water fender framework of both sides and ripple water fender are combined lucky formation V-structure (referring to Fig. 2).
Described absorbent system comprises as shown in Figure 2: 13 settling tanks, 14 slurrying ponds, 15 circulating pumps, 16 pipelines, 17 absorbent ponds, the dash demist section after the formation gas cleaning.The contained parts of absorbent system are to form the desulfurization denitrification agent preparation, the usefulness of desulfurization denitrification agent circulation, reacted cleaning solution sedimentation and processing capacity, after circulation fluid in the purification systems flows into the absorbent pond by the road, alkali lye in the slurrying pond enters in the settling tank again, and the absorbent regeneration in the settling tank is recycled water pump and sends purification systems back to and recycle.(course of work is seen the summary of the invention part)
Operation principle
After high-temperature flue gas entered horizontal flue, at first by parts 1 pre-spray humidification atomizing, flue gas was cooled off by humidification, and flue dust and water smoke collision are condensed, granulation, and sulfur in smoke and nitrogen oxide are absorbed by alkali lye, form the first order and purify.
Purification systems adopts secondary not have overflow grouping sieve-plate structure in the horizontal flue, forms the through-flow form of effective ebullated bed, increases the reaction time of flue gas and absorbent, flue gas is fully mixed with absorption liquid contact.The flow area of through-flow structure uses through multinomial engineering, and desulfurized effect satisfies discharge standard.
The flue gas that carries flue dust and water smoke by parts 3 backwash sprays and parts 6 sieve plates after, flue gas and alkali lye high velocity impact, air-flow will be with pearl by the boiling liquid level, and effective contact area of flue gas and absorption liquid increases, and has formed more effective absorption process in flue gas and alkali lye contact process.Flue gas upwards flows through absorbing the back, and the absorbent that drips with the upper strata sieve plate forms collision, and then strengthens mixing, and forms course of reaction in this flow process.After entering the secondary sieve plate, flue gas forms the course of reaction similar to prime.
Establish parts 7 sprinkling equipments on device top, flue gas reacts with further contact of the absorbent of decline when purifying, and improves the device reliability of operation.
Flue gas after being purified enters purification systems in the chimney, and this system is carried out demist to flue gas after being purified, removes the liquid pearl in the flue gas, guarantees not contain liquid moisture in the smoke evacuation.Demister adopts senior engineering plastic, and flusher is set, and guarantees that demister does not stop up non-scaling.
Solidfied material precipitates in settling tank, is recycled water pump after clarified solution is handled and sends use back to.In running,, can add alkali number (the pH value that guarantees back liquid is certain) according to the variation change of returning the pH value in the liquid for guaranteeing reliable purification efficiency.Adjust pH value back alkali lye and send equipment back to, desulfurizing agent and recirculated water recycle.
Claims (3)
1. flue gas desulfurization and denitration purifying device in chimney of horizontal flue, it is characterized in that this purifier comprises purification systems and the interior purification systems of the chimney that is arranged at the chimney inner bottom part in the horizontal flue that is arranged in the horizontal flue, the composition of purification systems comprises in the horizontal flue: the sieve plate framework, the sieve plate framework is arranged in the horizontal flue by bottom support and does not contact with walling of flue, be provided with sieve plate in the sieve plate framework, sieve plate framework front end end face and extend upwardly to walling of flue and be provided with front apron, sieve plate back-end framework end face and extend downward walling of flue and be provided with backboard, sieve plate framework top is provided with sprinkler part, sieve plate framework below is provided with the backwash sprinkler part, and the front of sieve plate framework also is provided with pre-sprinkler part; Purification systems comprises in the chimney: be positioned at the water fender framework of the chimney inner bottom part of horizontal flue interface along the inclined-plane layout, be provided with the ripple water fender in the water fender framework, and water fender framework and ripple water fender meet to airintake direction, and are provided with water leg below the water fender framework.
2. purifier according to claim 1 is characterized in that the ripple water fender oblique upper in the purification systems is provided with the backwash sprinkler part in the described chimney.
3. purifier according to claim 1, it is characterized in that this purifier also comprises absorbent system, the contained parts of described absorbent system are the usefulness that forms desulfurization denitrification agent preparation, circulation, sedimentation and processing capacity, its composition comprises: with pipeline UNICOM settling tank, slurrying pond and absorbent pond together, after the circulation fluid in the purification systems flows into the absorbent pond by the road in purification systems and the chimney in the horizontal flue, alkali lye in the slurrying pond enters in the settling tank again, and the absorbent regeneration in the settling tank is recycled water pump and sends purification systems back to and recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010031308A CN101721901A (en) | 2010-01-05 | 2010-01-05 | Flue gas desulfurization and denitration purifying device in chimney of horizontal flue |
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| CN201010031308A CN101721901A (en) | 2010-01-05 | 2010-01-05 | Flue gas desulfurization and denitration purifying device in chimney of horizontal flue |
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| CN101721901A true CN101721901A (en) | 2010-06-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688644A (en) * | 2012-02-23 | 2012-09-26 | 庄建中 | Dedusting, desulfurization and denitrification environment-friendly chimney |
| CN103644604A (en) * | 2013-12-03 | 2014-03-19 | 王骞 | Air PM dedusting sterilizer |
| CN112058055A (en) * | 2020-08-18 | 2020-12-11 | 上海交通大学 | Buffer type intermittent acidolysis flue gas purification device and process |
| CN112413731A (en) * | 2019-08-22 | 2021-02-26 | 广东美的制冷设备有限公司 | Air purification module and air conditioner indoor unit |
| CN112516773A (en) * | 2019-09-18 | 2021-03-19 | 北京绿岸壹号能源科技有限公司 | Spray purification device |
-
2010
- 2010-01-05 CN CN201010031308A patent/CN101721901A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688644A (en) * | 2012-02-23 | 2012-09-26 | 庄建中 | Dedusting, desulfurization and denitrification environment-friendly chimney |
| CN103644604A (en) * | 2013-12-03 | 2014-03-19 | 王骞 | Air PM dedusting sterilizer |
| CN112413731A (en) * | 2019-08-22 | 2021-02-26 | 广东美的制冷设备有限公司 | Air purification module and air conditioner indoor unit |
| CN112516773A (en) * | 2019-09-18 | 2021-03-19 | 北京绿岸壹号能源科技有限公司 | Spray purification device |
| CN112058055A (en) * | 2020-08-18 | 2020-12-11 | 上海交通大学 | Buffer type intermittent acidolysis flue gas purification device and process |
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Open date: 20100609 |