CN1745878A - Assembled smoke gas desulfurizer with denitration and dust-proof functions - Google Patents

Assembled smoke gas desulfurizer with denitration and dust-proof functions Download PDF

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Publication number
CN1745878A
CN1745878A CN 200510041490 CN200510041490A CN1745878A CN 1745878 A CN1745878 A CN 1745878A CN 200510041490 CN200510041490 CN 200510041490 CN 200510041490 A CN200510041490 A CN 200510041490A CN 1745878 A CN1745878 A CN 1745878A
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CN
China
Prior art keywords
smoke
flue gas
blower fan
dedusting
denitration
Prior art date
Application number
CN 200510041490
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Chinese (zh)
Inventor
孙克勤
Original Assignee
孙克勤
江苏苏源环保工程股份有限公司
张东平
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 孙克勤, 江苏苏源环保工程股份有限公司, 张东平 filed Critical 孙克勤
Priority to CN 200510041490 priority Critical patent/CN1745878A/en
Publication of CN1745878A publication Critical patent/CN1745878A/en

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Abstract

A combined fume denitrating, dusting and desulfurizing system with low cost and energy consumption is serially composed of denitrating reactor, air pre-heater, electric duster, horizontal-flow absorption tower, electric defogging unit and desulfurizing blower.

Description

Assembled smoke gas denitration, dedusting, desulfurizer

Technical field

The present invention relates to a kind of smoke eliminator that is used for the control-denitration of power-plant flue gas exhaust emission, dedusting, desulfurization or association area, belong to the technical field that smoke eliminator is made.

Background technology

Whole smoke eliminator is positioned at the end of flue in present known this field.Generally, the undressed former flue gas of discharging from boiler economizer at first enters Benitration reactor, and the flue gas after the denitration enters electric cleaner after lowering the temperature in air preheater (GAH).Former flue gas after the dedusting is earlier by the supercharging of desulfurization blower fan, passes through to enter the absorption tower after smoke re-heater (GGH) is lowered the temperature and carry out desulfurization again.Flue gas after the desulfurization is discharged from the absorption tower, and the clean flue gas of discharge enters smoke stack emission after the heat again by GGH again.The resistance of whole flue gas system is overcome by the desulfurization blower fan of special outfit.There is following shortcoming in this design: 1, since all unit of denitration, dedusting, desulfurization, heat exchange, demist as independently technology is arranged apart, so the flue gas that has huge smoke pipe to connect between each technology and match is with it collected and the diffusion profile facility, has increased investment and floor space; Also increased simultaneously consequent flow of flue gas resistance, operating cost improves; 2, electric cleaner is arranged in the higher relatively temperature range, and the ratio resistance of flue dust is higher.In order to obtain high efficiency of dust collection, must consume more electric energy; 3, the desulfurization blower fan is arranged in whole desulphurization system before, so that its shortcoming is the big energy consumption of the higher exhaust gas volumn of work cigarette temperature of blower fan is bigger.

Summary of the invention

Technical problem: in order to overcome the problem that existing design exists, the invention provides a kind of assembled smoke gas denitration, dedusting, desulfurizer, this design can reduce the floor space of whole system, make denitration, dedusting, desulfurization, heat exchange, all unit of demist connect smooth and easy, SR reduces, and reduces the investment and the operating cost of whole device thus.

Technical scheme: the present invention has more reasonably arranged technological process according to the characteristics of each key equipment, so that the work climate of key equipment is more suitable.Specific as follows: this device directly is linked in sequence by Benitration reactor, air preheater, electric cleaner, flat flow absorption tower, electrostatic precipitator, desulfurization blower fan and constitutes, the entrance point of Benitration reactor directly joins with the smoke outlet of boiler, and the direct and chimney of the smoke outlet of desulfurization blower fan joins.

For energy savings, improve the service life of whole device, between air preheater, electric cleaner, also be provided with the smoke re-heater temperature descending section, between electrostatic precipitator, desulfurization blower fan, also be provided with smoke re-heater intensification section.Whole device need not smoke pipe and links to each other.Undressed former flue gas at first enters Benitration reactor, enters the air preheater cooling after the denitration, enters the clean flue gas after the smoke re-heater temperature descending section adds thermally desulfurizing again.Flue gas after the cooling enters the electric cleaner dedusting, enters subsequently through the flue gas of dedusting to have the flat flow absorption tower that can adjust the anti-flue gas backflow import of splayed and carry out desulfurization.Being provided with before the flat flow absorption tower can be with the splayed back-flow preventer of Load Regulation, and this back-flow preventer is made up of guide plate, connecting rod, actuator, and actuator connects and drive link, and the other end of drive link is connected with the guide plate of activity.

In order to overcome the relatively low problem of the average mass transfer power of traditional advection tower, adopt custom-designed flat flow absorption tower spray liquid active control technology and spray liquid energy to utilize system again.Flue gas after the desulfurization is discharged from the absorption tower, and the clean flue gas of discharge enters smoke stack emission after directly entering and directly entering smoke re-heater intensification Duan Zaire again behind the efficient electrostatic precipitator.The resistance of whole flue gas system is overcome by the desulfurization blower fan that is provided in behind the smoke re-heater.

Beneficial effect: because the direct device of being combined into one of denitration, dedusting, desulfurization, heat exchange, all unit of demist, saved present known denitration, dedusting, desulfurization is arranged apart and between each technology of bringing huge smoke pipe connect and the flue gas that matches is with it collected and the diffusion profile facility, saved investment and floor space; Simultaneously also reduce consequent flow of flue gas resistance, saved operating cost.In addition,, and then enter electric cleaner in smoke re-heater,, improved efficiency of dust collection, saved energy consumption so the ratio resistance of flue dust reduces owing to flue gas is at first lowered the temperature.After the desulfurization blower fan is installed in the clean flue gas of smoke re-heater, wearing and tearing, the contamination of having avoided flying dust to cause, and because flue-gas temperature is lower, the volume of flue gas reduces, so energy consumption reduces, energy-saving effect is obvious.Relatively to have technology more reasonable with the smoke eliminator of routine, system layout compactness, investment and the low characteristics of operating cost.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing.

Fig. 1 is a general structure schematic diagram of the present invention.Have among Fig. 1: boiler 1, Benitration reactor 2, air preheater 3, smoke re-heater temperature descending section 41, smoke re-heater intensification section 42, electric cleaner 5, back-flow preventer 6.1, flat flow absorption tower 6, electrostatic precipitator 7, desulfurization blower fan 8, chimney 9.

Fig. 2 is the structural representation of back-flow preventer 6.1 among Fig. 1, wherein has: guide plate 6.1.1, connecting rod 6.1.2, actuator 6.1.3.

The specific embodiment

In this device, this device directly is linked in sequence by Benitration reactor 2, air preheater 3, electric cleaner 5, flat flow absorption tower 6, electrostatic precipitator 7, desulfurization blower fan 8 and constitutes, the entrance point of Benitration reactor 2 directly joins with the smoke outlet of boiler 1, and the direct and chimney 9 of the smoke outlet of desulfurization blower fan 8 joins.Between air preheater 3, electric cleaner 5, also can be provided with smoke re-heater temperature descending section 4 1, between electrostatic precipitator 7, desulfurization blower fan 8, also can be provided with smoke re-heater intensification section 4 2According to actual needs, this device can not contain Benitration reactor 2 or smoke re-heater, also can neither contain.Being provided with before the flat flow absorption tower 6 can be with the splayed back-flow preventer 6.1 of Load Regulation, this back-flow preventer 6.1 is made up of guide plate 6.1.1, connecting rod 6.1.2, actuator 6.1.3, actuator 6.1.3 connects and drive link 6.1.2, and the other end of drive link 6.1.2 is connected with the guide plate 6.1.1 of activity.

This device is not established flue gas collection and the diffusion profile facility that the smoke pipe between each functional module connects and matches with it.Each unit be the outlet of previous element also be the inlet of next unit, thereby realized that the connection between each unit shares.

The advection tower that has electric demist and anti-return gas approach is adopted on the absorption tower that desulfurization is used.Simultaneously, in order to overcome the relatively low problem of the average mass transfer power of traditional advection tower, adopt custom-designed flat flow absorption tower spray liquid active control technology and spray liquid energy to utilize system again.

Among Fig. 1, from the at first denitration Benitration reactor 2 of undressed former flue gas that boiler 1 is discharged, the flue gas after out of stock enters the air that air preheater 3 preboilers are used.Flue gas after the cooling then enters smoke re-heater temperature descending section 4 1In emit clean flue gas after heat is used for adding thermally desulfurizing, temperature enters electric cleaner 5 after reducing, and removes the flying dust of the overwhelming majority here.Flue gas after the dedusting then enters flat flow absorption tower 6, is provided with splayed in the tower import and can regulates Smoke prevention gas reflux 6.1.When boiler load reduces, when exhaust gas volumn descends, actuator 6.1.3 drive link 6.1.2 changes the angle of guide plate 6.1.1.The absorbent slurry that atomizes in tower sprays, and the former flue gas of flowing through is carried out washing, purifying, makes flue gas reduce to saturation temperature.The clean flue gas that flows out from the absorption tower then by electrostatic precipitator 7, is used for removing the moisture that flue gas is taken out of in washing process, again by smoke re-heater intensification section 4 2Being reheated the back discharges from chimney 9.The resistance of whole flue gas system is by being provided in smoke re-heater intensification section 4 2And the desulfurization blower fan 8 between the chimney 9 overcomes.

Claims (3)

1, a kind of assembled smoke gas denitration, dedusting, desulfurizer, it is characterized in that this device is by Benitration reactor (2), air preheater (3), electric cleaner (5), flat flow absorption tower (6), electrostatic precipitator (7), desulfurization blower fan (8) formation that directly is linked in sequence, the entrance point of Benitration reactor (2) directly joins with the smoke outlet of boiler (1), and the direct and chimney (9) of the smoke outlet of desulfurization blower fan (8) joins.
2, assembled smoke gas denitration according to claim 1, dedusting, desulfurizer, it is characterized in that between air preheater (3), electric cleaner (5), also being provided with smoke re-heater temperature descending section (41), between electrostatic precipitator (7), desulfurization blower fan (8), also be provided with smoke re-heater intensification section (42).
3, assembled smoke gas denitration according to claim 1, dedusting, desulfurizer, it is characterized in that preceding being provided with in flat flow absorption tower (6) can be with the splayed back-flow preventer (6.1) of Load Regulation, this back-flow preventer (6.1) is made up of guide plate (6.1.1), connecting rod (6.1.2), actuator (6.1.3), actuator (6.1.3) connects and drive link (6.1.2), and the other end of drive link (6.1.2) is connected with the guide plate (6.1.1) of activity.
CN 200510041490 2005-08-16 2005-08-16 Assembled smoke gas desulfurizer with denitration and dust-proof functions CN1745878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510041490 CN1745878A (en) 2005-08-16 2005-08-16 Assembled smoke gas desulfurizer with denitration and dust-proof functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510041490 CN1745878A (en) 2005-08-16 2005-08-16 Assembled smoke gas desulfurizer with denitration and dust-proof functions

Publications (1)

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CN1745878A true CN1745878A (en) 2006-03-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102095205A (en) * 2010-12-29 2011-06-15 西安交通大学 Dedusting and desulfurization synergistic comprehensive energy-saving and emission-reducing device based on flue gas cooling
CN101601963B (en) * 2009-06-02 2012-07-04 张蕊 Smoke purification system and method thereof
CN105080279A (en) * 2015-09-22 2015-11-25 江苏力沛电力工程技术服务有限公司 Boiler desulfurization and denitration system device
CN108779915A (en) * 2016-03-30 2018-11-09 三菱日立电力系统株式会社 Exhaust treatment system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101601963B (en) * 2009-06-02 2012-07-04 张蕊 Smoke purification system and method thereof
CN102095205A (en) * 2010-12-29 2011-06-15 西安交通大学 Dedusting and desulfurization synergistic comprehensive energy-saving and emission-reducing device based on flue gas cooling
CN105080279A (en) * 2015-09-22 2015-11-25 江苏力沛电力工程技术服务有限公司 Boiler desulfurization and denitration system device
CN108779915A (en) * 2016-03-30 2018-11-09 三菱日立电力系统株式会社 Exhaust treatment system
US10471382B2 (en) 2016-03-30 2019-11-12 Mitsubishi Hitachi Power Systems, Ltd. Air pollution control system
CN108779915B (en) * 2016-03-30 2020-03-27 三菱日立电力系统株式会社 Exhaust gas treatment system

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