CN103953939A - Wet desulphurization mechanism - Google Patents
Wet desulphurization mechanism Download PDFInfo
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- CN103953939A CN103953939A CN201410174320.9A CN201410174320A CN103953939A CN 103953939 A CN103953939 A CN 103953939A CN 201410174320 A CN201410174320 A CN 201410174320A CN 103953939 A CN103953939 A CN 103953939A
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- wet desulphurization
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Abstract
The invention discloses a wet desulphurization mechanism. The wet desulphurization mechanism comprises an original smoke deflector and a smoke heat exchanger, wherein an original smoke opening is formed in the smoke heat exchanger, the cross section of the original smoke opening is rectangular, the original smoke deflector comprises a first elbow and a second elbow, the cross sections of the first elbow and the second elbow are round, and both the first elbow and the second elbow are mounted on the original smoke opening of the smoke heat exchanger. As the first elbow and the second elbow, of which the cross sections are round, are arranged at the original smoke opening of the smoke heat exchanger, smoke can be shunt by the first elbow and the second elbow before entering the smoke heat exchanger, and sufficient bending spaces are available at the first elbow and the second elbow. Besides, the first elbow and the second elbow have smaller round cross sections and great deflecting functions, the whole flow field becomes more uniform, the heat exchange efficiency of the smoke heat exchanger is effectively improved, and the risks that the easily torn deflector plate designed in the traditional rectangular runner causes corroded cracks, corroded flues, runner blocking shutdown and the like are eliminated.
Description
Technical field
The present invention relates to thermal power generating technology field, particularly a kind of wet desulphurization mechanism.
Background technology
In the desulphurization system in thermal power plant, desulfurization GGH (flue gas heat-exchange unit) equipment is the visual plant of wet desulphurization, play and utilize former flue gas that the clean flue gas after desulfurization is heated, exhaust gas temperature is reached on dew point, alleviate the corrosion to clean flue and chimney, reduce the flue-gas temperature that enters absorption tower simultaneously, reduce the effect in tower, corrosion-resistant technology being required, the mounting arrangements height of GGH equipment is generally unsuitable too high, therefore in order to meet the requirement of GGH apparatus arrangement, cigarette air channel often needs to take a sudden turn along the long limit of GGH, take a sudden turn and conventionally adopt the rectangular guiding elbow mating with GGH in traditional cigarette air channel, as Fig. 1, shown in Fig. 2, such cross section length-width ratio along the rectangular guiding elbow 10 of the long limit of GGH zig zag is more than or equal to 2, and elbow bending radius is less, be generally half left and right on the long limit of GGH, there are the following problems for it: 1, flow field: when this elbow turns round along 90 °, the long limit of GGH, flue gas lateral deviation phenomenon is very serious, have a strong impact on GGH heat exchange efficiency, in order to allow the flow field can be relatively even, do not affect desulfurization GGH heat exchange efficiency, conventionally in body inside, road, deflector is set, but after operation after a while, the deflector of body inside, road tears repeatedly at flue gas, easily produce to tear and come off, make anticorrosion of flue duct produce crack and cause boiler flue corrosion, when serious, stop up runner, cause compressor emergency shutdown, badly influence the safe and reliable operation of unit, 2, consumptive material: flat wide rectangular elbow consumptive material is huge, reinforcing rib setting and all more complicated are installed, 3, resistance: the comparison of resistance that calculates such rectangular elbow layout by employing FLUENT fluid simulation software simulation is large, about 100Pa, blower fan is large for overcoming this resistance power consumption waste.
Summary of the invention
Based on this, the invention reside in the defect that overcomes prior art, a kind of wet desulphurization mechanism is provided, can not only effectively improve the heat exchange efficiency of flue gas heat-exchange unit, and consumptive material is few, give the resistance of flue gas little.
Its technical scheme is as follows:
A kind of wet desulphurization mechanism, comprise former cigarette conducting element, flue gas heat-exchange unit, described flue gas heat-exchange unit is provided with former flue gas mouth, the cross section of its former flue gas mouth is rectangle, described former cigarette conducting element comprises the first elbow, the second elbow, the cross section of described the first elbow, the second elbow is rounded, and this first elbow and the second elbow are installed in the former flue gas mouth of flue gas heat-exchange unit.
Its further technical scheme is as follows:
Described the first elbow comprises the first turnaround section, this second elbow comprises the second turnaround section and the first linkage section being communicated with the first end of the second turnaround section, the angle of turn of this first turnaround section and the second turnaround section is 90 degree, and the first turnaround section and the first linkage section are arranged side by side at former flue gas mouth along the long limit of former flue gas mouth.
Described the second elbow also comprises the first introduction segment, and described the first introduction segment is communicated with the second end of the second turnaround section.
The cross-sectional diameter of described the first elbow, the second elbow equates.
The cross-sectional diameter of described the first elbow, the second elbow is less than or equal to the width of former flue gas mouth.
The cross-sectional diameter sum of the cross-sectional diameter of described the first elbow and the second elbow is less than or equal to the length of former flue gas mouth.
Described wet desulphurization mechanism, also comprise clean cigarette conducting element, described flue gas heat-exchange unit is also provided with clean flue gas mouth, the cross section of its Ash-tray mouth is rectangle, described clean cigarette conducting element comprises triple section arm, the 4th elbow, the cross section of described triple section arm, the 4th elbow is rounded, and this triple section arm and the 4th elbow are installed in the Ash-tray mouth of flue gas heat-exchange unit.
Described triple section arm comprises the 3rd turnaround section, the 4th elbow comprises base-leg turn section and the second linkage section being communicated with the first end of base-leg turn section, the angle of turn of the 3rd turnaround section and base-leg turn section is 90 degree, and the first turnaround section and the second linkage section are arranged side by side the clean flue gas mouth at flue gas heat-exchange unit along the long limit of clean flue gas mouth.
Described the 4th elbow also comprises the second introduction segment, and described the second introduction segment is communicated with the second end of base-leg turn section.
The length-width ratio of described former flue gas mouth cross section is 1.8～2.5, and the length-width ratio of described clean flue gas mouth cross section is 1.8～2.5.
Below the advantage of aforementioned techniques scheme or principle are described:
Above-mentioned wet desulphurization mechanism, former flue gas mouth at flue gas heat-exchange unit arranges the first rounded elbow of cross section and the second elbow, flue gas can pass through the first elbow, the second elbow shunting enters flue gas heat-exchange unit, at the first elbow, there is the space of turning round fully the second elbow, and its circular cross-section is less, there is good guide functions, therefore whole flow field becomes more even, the former flue gas Kou Chu flow field of flue gas heat-exchange unit is very significantly improved, can effectively improve the heat exchange efficiency of flue gas heat-exchange unit, also eliminated traditional rectangular road body design deflector easily tears and causes the anticorrosion crevice corrosion flue that occurs simultaneously, runner stops up shuts down equivalent risk, and adopt the first elbow traditional rectangular guiding elbow relative to the required consumptive material of the second elbow to greatly reduce, by adopting FLUENT fluid simulation software simulation to calculate the first elbow of this wet desulphurization mechanism and the resistance of the second elbow is less, about 20Pa, than the few 80Pa of former rectangular guiding elbow, can effectively reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional wet desulphurization mechanism;
Fig. 2 is the schematic side view of traditional wet desulphurization mechanism;
The structural representation of the wet desulphurization mechanism described in Fig. 3 embodiment of the present invention;
The schematic side view of the wet desulphurization mechanism described in Fig. 4 embodiment of the present invention;
Description of reference numerals:
10, rectangular guiding elbow, 100, flue gas heat-exchange unit, 110, former flue gas mouth, 120, clean flue gas mouth, 210, the first elbow, 212, the first turnaround section, the 220, second elbow, the 222, second turnaround section, 224, the first linkage section, 226, the first introduction segment, 310, triple section arm, the 320, the 4th elbow.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated:
As shown in Figure 3,4, a kind of wet desulphurization mechanism, comprise former cigarette conducting element, flue gas heat-exchange unit 100, described flue gas heat-exchange unit 100 is provided with former flue gas mouth 110, the cross section of its former flue gas mouth 110 is rectangle, described former cigarette conducting element comprises the first elbow 210, the second elbow 220, and the cross section of described the first elbow 210, the second elbow 220 is rounded, and this first elbow 210 and the second elbow 220 are installed in the former flue gas mouth 110 of flue gas heat-exchange unit 100.
Wet desulphurization mechanism described in the present embodiment, former flue gas mouth 110 at flue gas heat-exchange unit 100 arranges the first rounded elbow 210 of cross section and the second elbow 220, flue gas can pass through the first elbow 210, the second elbow 220 shuntings enter flue gas heat-exchange unit 100, at the first elbow 210, there is the space of turning round fully at the second elbow 220 places, and its circular cross-section is less, there is good guide functions, therefore whole flow field becomes more even, former flue gas mouth 110 flow fields, place of flue gas heat-exchange unit 100 are very significantly improved, can effectively improve the heat exchange efficiency of flue gas heat-exchange unit 100, also eliminated traditional rectangular road body design deflector easily tears and causes the anticorrosion crevice corrosion flue that occurs simultaneously, runner stops up shuts down equivalent risk, and adopt the first elbow 210 traditional rectangular water conservancy diversion elbow as shown in Figure 1 and Figure 2 relative to the required consumptive material of the second elbow 220 to greatly reduce, by adopting FLUENT fluid simulation software simulation to calculate the first elbow 210 of this wet desulphurization mechanism and the resistance of the second elbow 220 is less, about 20Pa, than the few 80Pa of former rectangular guiding elbow, can effectively reduce energy consumption.
Described the first elbow 210 comprises the first turnaround section 212, this second elbow 220 comprises the second turnaround section 222 and the first linkage section 224 being communicated with the first end of the second turnaround section 222, the angle of turn of this first turnaround section 212 and the second turnaround section 222 is 90 degree, and the first turnaround section 212 and the first linkage section 224 are arranged side by side at former flue gas mouth 110 along the long limit of former flue gas mouth 110.Described the second elbow 220 also comprises the first introduction segment 226, and described the first introduction segment 226 is communicated with the second end of the second turnaround section 222.As shown in Figure 4, on the same cross section of former cigarette conducting element, as cross section vertical with former flue gas mouth 110 in Fig. 4, the first turnaround section 212 is less than or equal to the first introduction segment 226 near a side of flue gas heat-exchange unit 100 and the distance of former flue gas mouth 110 away from a side of flue gas heat-exchange unit 100 and the distance of former flue gas mouth 110, the first elbow 210 directly carries out 90 ° of turnings by the first turnaround section 212, the second elbow 220 carries out 90 ° of turnings by the second turnaround section 222 after being communicated with former flue gas mouth 110 by the first linkage section 224 again, and then derive by the first introduction segment 226, such the first linkage section 224 can reserve one section allows bit space for the second turnaround section 222 is installed, avoid the first elbow 210 and the second elbow 220 to interfere.
For guaranteeing the uniformity in former flue gas mouth 110 flow fields, described in the present embodiment, the cross-sectional diameter of the first elbow 210, the second elbow 220 equates, flue gas can enter flue gas heat-exchange unit 100 from former flue gas mouth 110 by the first elbow 210, the second elbow 220 after shunting uniformly like this.
For avoiding flue gas to reveal, the cross-sectional diameter of described the first elbow 210, the second elbow 220 is less than or equal to the width of former flue gas mouth 110.The cross-sectional diameter sum of the cross-sectional diameter of described the first elbow 210 and the second elbow 220 is less than or equal to the length of former flue gas mouth 110.
Described wet desulphurization mechanism, also comprise clean cigarette conducting element, described flue gas heat-exchange unit 100 is also provided with clean flue gas mouth 120, the cross section of its Ash-tray mouth is rectangle, described clean cigarette conducting element comprises triple section arm 310, the 4th elbow 320, the cross section of described triple section arm 310, the 4th elbow 320 is rounded, and this triple section arm 310 and the 4th elbow 320 are installed in the Ash-tray mouth of flue gas heat-exchange unit 100.Clean flue gas after desulfurization is diverted to triple section arm 310, the 4th elbow 320 by clean flue gas mouth 120 like this, can flow uniformly in each cigarette wind channel tube, and the cross section of triple section arm 310, the 4th elbow 320 is rounded, can effectively reduce manufacturing cost.
Described triple section arm 310 comprises the 3rd turnaround section, the 4th elbow 320 comprises base-leg turn section and the second linkage section being communicated with the first end of base-leg turn section, the angle of turn of the 3rd turnaround section and base-leg turn section is 90 degree, and the first turnaround section 212 and the second linkage section are arranged side by side the clean flue gas mouth 120 at flue gas heat-exchange unit 100 along the long limit of clean flue gas mouth 120.Described the 4th elbow 320 also comprises the second introduction segment, and described the second introduction segment is communicated with the second end of base-leg turn section.With reference to Fig. 4, the clean such setting of cigarette conducting element is also to interfere for fear of triple section arm 310 and the 4th elbow 320.
Described in the present embodiment, the length-width ratio of former flue gas mouth 110 cross sections is 1.8～2.5, and the length-width ratio of described clean flue gas mouth 120 cross sections is 1.8～2.5, and as shown in Figure 3, former flue gas mouth 110 is arranged on the same side with clean flue gas mouth 120 described in the present embodiment.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1.Yi Zhong wet desulphurization mechanism, it is characterized in that, comprise former cigarette conducting element, flue gas heat-exchange unit, described flue gas heat-exchange unit is provided with former flue gas mouth, the cross section of its former flue gas mouth is rectangle, described former cigarette conducting element comprises the first elbow, the second elbow, and the cross section of described the first elbow, the second elbow is rounded, and this first elbow and the second elbow are installed in the former flue gas mouth of flue gas heat-exchange unit.
2. wet desulphurization according to claim 1 mechanism, it is characterized in that, described the first elbow comprises the first turnaround section, this second elbow comprises the second turnaround section and the first linkage section being communicated with the first end of the second turnaround section, the angle of turn of this first turnaround section and the second turnaround section is 90 degree, and the first turnaround section and the first linkage section are arranged side by side at former flue gas mouth along the long limit of former flue gas mouth.
3. wet desulphurization according to claim 2 mechanism, is characterized in that, described the second elbow also comprises the first introduction segment, and described the first introduction segment is communicated with the second end of the second turnaround section.
4. wet desulphurization according to claim 1 mechanism, is characterized in that, the cross-sectional diameter of described the first elbow, the second elbow equates.
5. wet desulphurization according to claim 4 mechanism, is characterized in that, the cross-sectional diameter of described the first elbow, the second elbow is less than or equal to the width of former flue gas mouth.
6. wet desulphurization according to claim 5 mechanism, is characterized in that, the cross-sectional diameter sum of the cross-sectional diameter of described the first elbow and the second elbow is less than or equal to the length of former flue gas mouth.
7. wet desulphurization according to claim 1 mechanism, it is characterized in that, it also comprises clean cigarette conducting element, described flue gas heat-exchange unit is also provided with clean flue gas mouth, the cross section of its Ash-tray mouth is rectangle, described clean cigarette conducting element comprises triple section arm, the 4th elbow, and the cross section of described triple section arm, the 4th elbow is rounded, and this triple section arm and the 4th elbow are installed in the Ash-tray mouth of flue gas heat-exchange unit.
8. wet desulphurization according to claim 7 mechanism, it is characterized in that, described triple section arm comprises the 3rd turnaround section, the 4th elbow comprises base-leg turn section and the second linkage section being communicated with the first end of base-leg turn section, the angle of turn of the 3rd turnaround section and base-leg turn section is 90 degree, and the first turnaround section and the second linkage section are arranged side by side the clean flue gas mouth at flue gas heat-exchange unit along the long limit of clean flue gas mouth.
9. wet desulphurization according to claim 8 mechanism, is characterized in that, described the 4th elbow also comprises the second introduction segment, and described the second introduction segment is communicated with the second end of base-leg turn section.
10. wet desulphurization according to claim 7 mechanism, is characterized in that, the length-width ratio of described former flue gas mouth cross section is 1.8～2.5, and the length-width ratio of described clean flue gas mouth cross section is 1.8～2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174320.9A CN103953939B (en) | 2014-04-28 | 2014-04-28 | Wet desulphurization mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174320.9A CN103953939B (en) | 2014-04-28 | 2014-04-28 | Wet desulphurization mechanism |
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| CN103953939A true CN103953939A (en) | 2014-07-30 |
| CN103953939B CN103953939B (en) | 2016-05-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104791821A (en) * | 2015-05-06 | 2015-07-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Combined arrangement structure of four outlets of dust remover and rear smoke and air systems of two rows of induced draft fans for power plant |
| CN104879765A (en) * | 2015-06-10 | 2015-09-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Six-outlet two-row rear flue gas and air system combined arrangement structure with flue gas waste heat recovery device |
| CN104896491A (en) * | 2015-06-10 | 2015-09-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Four-outlet biserial rear smoke wind system combined layout structure with flue gas waste heat recovery device |
| CN105333451A (en) * | 2015-11-25 | 2016-02-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Cold air feeding device for air preheater of thermal power plant |
| CN105351954A (en) * | 2015-11-25 | 2016-02-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue system for outlet of tower-type furnace air pre-heater of thermal power plant |
| CN105402749A (en) * | 2015-12-17 | 2016-03-16 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue gas outlet structure of air pre-heater of one million-level pi-shaped boiler and one million-level coal-fired unit |
| CN105042624B (en) * | 2015-08-20 | 2017-06-16 | 中国能源建设集团广东省电力设计研究院有限公司 | The guiding device of air and gas system and its cold Secondary Air entrance of air preheater |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791821A (en) * | 2015-05-06 | 2015-07-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Combined arrangement structure of four outlets of dust remover and rear smoke and air systems of two rows of induced draft fans for power plant |
| CN104791821B (en) * | 2015-05-06 | 2018-01-26 | 中国能源建设集团广东省电力设计研究院有限公司 | The power plant outlet of deduster four and the rear air and gas system combination layout structure of biserial air-introduced machine |
| CN104879765A (en) * | 2015-06-10 | 2015-09-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Six-outlet two-row rear flue gas and air system combined arrangement structure with flue gas waste heat recovery device |
| CN104896491A (en) * | 2015-06-10 | 2015-09-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Four-outlet biserial rear smoke wind system combined layout structure with flue gas waste heat recovery device |
| CN105042624B (en) * | 2015-08-20 | 2017-06-16 | 中国能源建设集团广东省电力设计研究院有限公司 | The guiding device of air and gas system and its cold Secondary Air entrance of air preheater |
| CN105333451A (en) * | 2015-11-25 | 2016-02-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Cold air feeding device for air preheater of thermal power plant |
| CN105351954A (en) * | 2015-11-25 | 2016-02-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue system for outlet of tower-type furnace air pre-heater of thermal power plant |
| CN105402749A (en) * | 2015-12-17 | 2016-03-16 | 中国能源建设集团广东省电力设计研究院有限公司 | Flue gas outlet structure of air pre-heater of one million-level pi-shaped boiler and one million-level coal-fired unit |
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| CN103953939B (en) | 2016-05-11 |
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