CN204746015U - High -efficient anticorrosive tail -gas clean -up system with quenching and tempering function adjusts temperature - Google Patents
High -efficient anticorrosive tail -gas clean -up system with quenching and tempering function adjusts temperature Download PDFInfo
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- CN204746015U CN204746015U CN201520236975.4U CN201520236975U CN204746015U CN 204746015 U CN204746015 U CN 204746015U CN 201520236975 U CN201520236975 U CN 201520236975U CN 204746015 U CN204746015 U CN 204746015U
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Abstract
The utility model discloses a high -efficient anticorrosive tail -gas clean -up system with quenching and tempering function adjusts temperature, the system is including cooling quenching and tempering section, mixing section, dust removal purification section, bypass wind channel etc, this system is earlier with the cooling of partial tail gas, then mixes with refrigerated tail gas not, removes dust in the dust remover again, the utility model discloses a to cool off tail gas and uncooled tail gas and mix, effectively prevent condensing of aggressive fume, reduce aggressive fume after condensing to the corrosive effects of system. So the utility model discloses compromise the cooling and avoid low temperature corrosion to flow that can be through the control cooling medium and temperature and (or) the temperature of how many effective control tail gas after the cooling of humidification volume, the rethread changes the flow of the flue gas of entering bypass, and the effective control mixes the temperature of back tail gas.
Description
Technical field
The utility model relates to a kind of efficient corrosion resisting exhaust gas purification system with the modified function of temperature adjustment, particularly a kind of for the tail gas containing coercibility corrosion composition, as the cleaning system of fire coal boiler fume.
Background technology
Industrial waste gas is generally containing dust and other corrosive substance, and as the flue gas of coal-burning boiler, the corrosive elements containing a large amount of dust and SO3, dust separation system, as electric precipitation and bag-type dust and electric bag composite dedusting etc. are applied.
Uniform temperature has been generally in industrial waste gas, there is the gas of recyclable heat energy, temperature reduces both heat-recoverables, also can improve the performance of dust separation system, for electric precipitation, reducing temperature can significantly improve efficiency of dust collection simultaneously, for sack cleaner, reduce the temperature requirement that temperature also can reduce filtrate, reduce costs, extend life-span of filtering material etc.But likely cause the condensation due to condensable corrosion component to bring equipment cold end corrosion owing to reducing temperature.
Summary of the invention
The utility model proposes a kind of efficient corrosion resisting exhaust gas purification system with the modified function of temperature adjustment, both can reduce exhaust temperature, and effectively reclaim heat energy, improve udst separation efficiency, the extension device life-span, reduce equipment investment, equipment dependability can not be brought again to reduce simultaneously, produce the harm of cold end corrosion.
The purpose of this utility model is achieved through the following technical solutions: a kind of efficient corrosion resisting exhaust gas purification system with the modified function of temperature adjustment, described system by lower the temperature modified section, mixing section, udst separation section, bypass air channel, ash bucket and ash exhauster form, lower the temperature modified section, mixing section, udst separation section connect successively; Lower the temperature modified section and be connected with gas inlet respectively with bypass air channel; Bypass air channel is connected with mixing section; Described ash bucket is positioned at below modified section of cooling, mixing section, udst separation section, and ash exhauster is arranged on ash bucket end.
Further, modified section of described cooling is containing exhaust gas cooler, moistening and lowering temperature device or contain exhaust gas cooler and moistening and lowering temperature device simultaneously, and the cooling medium C in exhaust gas cooler is the mixture of liquid, gas or gas and liquid.
Further, system also includes modifying device, is placed in mixing section, lower the temperature modified section or bypass air channel.
Further, described udst separation section is containing electric dust collector, dust removal by filtration device or contain electric dust collector and dust removal by filtration device simultaneously.
Further, in bypass air channel, also flow control valve is provided with.
Further, described exhaust gas cooler is divided into many groups, and many group exhaust gas coolers connect successively; One or more in the material of each group of exhaust gas cooler, structure, cooling medium are different.
It is simple that the utility model has system, economically feasible, efficiently, and the advantage such as reliable.The utility model can be widely used in kind of a purified treatment for corrosivity tail gas, especially the purified treatment of fire coal boiler fume, comprises the process of the flue gas of large coal-fired power plant coal-burning boiler.
Accompanying drawing explanation
Fig. 1 is embodiment 1 of the present utility model;
Fig. 2 is embodiment 2 of the present utility model;
Fig. 3 is embodiment 3 of the present utility model;
Fig. 4 is embodiment 4 of the present utility model;
Fig. 5 is embodiment 5 of the present utility model;
Fig. 6 is embodiment 6 of the present utility model;
In figure, lower the temperature modified section 1, mixing section 2, udst separation section 3, ash bucket 4, ash exhauster 41, bypass air channel 5, flow control valve 51, housing 6, exhaust gas cooler 11, moistening and lowering temperature device 12, electric dust collector 31, dust removal by filtration device 32.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3, Figure 4, system by lower the temperature modified section 1, mixing section 2, udst separation section 3, bypass air channel 5, ash bucket 4 and ash exhauster 41 etc. form, tail gas W is divided into two parts, part tail gas W1 is first through cooling modified section 1, another part tail gas W2 is through bypass air channel 5, two parts tail gas mixes through mixing section 2, then enters udst separation section 3, discharges after purification.
Lower the temperature modified section 1 in Fig. 1, Fig. 3 containing exhaust gas cooler 11, cooling medium C is liquid, as water etc., or gas, as air etc., or the mixture of gas and water.Exhaust gas cooler 11 can mate general soot blower, as steam sootblower etc., to prevent exhaust gas cooler blocking etc.Do not indicate in figure.Exhaust gas cooler 11 improves the efficiency of dust collection of electric precipitation by cooling.Exhaust gas cooler 11 improves the condition of work of the filtering material of the dust arrester in udst separation section 3 by cooling, can adopt the filtrate of the economy that heatproof is lower.By flow and the temperature of cooling medium C, control the flue-gas temperature flowing out exhaust gas cooler 11.The flow of cooling medium C realizes by general valve-gating technology, does not show valve in figure.Cooling medium C is by selecting different low-temperature receivers to realize, and as taken boiler feedwater as low-temperature receiver, inlet air of boiler is low-temperature receiver, and the cooling water of cooling tower even can be adopted to be low-temperature receiver.Boiler feedwater is also divided into different temperatures, as the normal-temperature water without heating, or for power plant, can be that embody rule can carry out flexible design according to different system with the feedwater through heating of bleeding.
Lower the temperature modified section 1 in Fig. 2 containing moistening and lowering temperature device 12, moistening and lowering temperature device 12 not only has cooling effect, is improved the efficiency of dust collection of electric precipitation by cooling, moisturize simultaneously, there is modified function, for electric precipitation, the ratio resistance of dust can be changed, improve efficiency of dust collection.Add moisture adjustment temperature by regulating, adding moisture can be regulated by the pressure of the S that feeds water.
Lower the temperature in Fig. 4 modified section and contain both combinations, be i.e. the combination of exhaust gas cooler 11 and moistening and lowering temperature device 12.The optimum organization of exhaust gas cooler 11 and moistening and lowering temperature device 12 can be passed through, make flue gas obtain suitable temperature and moisture.
In Fig. 1, Fig. 2, udst separation section 3 is containing electric dust collector 31,
In Fig. 3, udst separation section 3 is containing dust removal by filtration device 32, as bag-type dust collector,
In Fig. 4, udst separation section 3 contains the combination of electric dust collector 31 and dust removal by filtration device 32.
Fig. 5 and Fig. 4 uniquely in the different Fig. 5 of being exhaust gas cooler 11 be divided into many groups, the material of many groups exhaust gas cooler 11 or structure etc. are variant, tail gas is successively through too much organizing exhaust gas cooler 11, for the tail gas of different temperatures, type, exhaust gas cooler 11 can adopt unlike material, structure, to adapt to different requirements, as anticorrosion requirement etc.Exhaust gas cooler 11 is divided into many groups different cooling mediums can also be adopted to cool flue gas, and namely the source of the cooling medium of many group exhaust gas coolers 11 is different, as C1 and C2 of Fig. 5 display, represent different cooling medium, show two kinds in Fig. 5, be not limited to two kinds, can have multiple.
Fig. 6 and Fig. 4 is uniquely different to be: in Fig. 6, and udst separation section 3, only containing electric dust collector 31, does not contain dust removal by filtration device 32.
Fig. 1, Fig. 2, Fig. 4, Fig. 5 display system can also include modifying device, as SO
3injectors etc., are placed in mixing section 2, do not represent, to improve the efficiency of electric precipitation in lower the temperature modified section 1 or bypass air channel 5, figure.
Also be provided with flow control valve 51 in bypass air channel 5 in Fig. 1 to Fig. 5, be used for regulating the flow of W2.The flow of tail gas W2 is generally 5% ~ 50% of tail gas W total flow, can be ensured that the exhaust temperature T2 of the outlet of mixing section is higher than cooling modified section of 1 outlet temperature T1, is generally 5 DEG C-25 DEG C by adjust flux; And ensureing the temperature of mixing section, the temperature T2 of exhaust after mixing section of coal-burning boiler is generally 75 DEG C-105 DEG C.
The general principle of the system shown by Fig. 1 to Fig. 5 is: first allow partial fume W1 lower the temperature, by heat exchange or humidification evaporative cooling, if the corrosive gas condensation in this part flue gas, after mixing with the flue gas W2 by bypass air channel 5, W1 heats up, enter deduster and would not produce gas condensation again, if the corrosive gas in this part flue gas is noncondensing, after mixing with bypass flue gas W2, W1 heats up, enter deduster and more can not produce gas condensation again, simultaneously namely the flue gas W temperature T2 that leaves mixing section enters the flue-gas temperature before cooling modified section 1 and bypass air channel 5 lower than the initial temperature T(of flue gas W), so native system is taken into account cooling and is avoided cold end corrosion, and by the flow of controlled cooling model medium and temperature, and (or) add how many effective control temperature T1 of moisture, by changing the flow entering the flue gas W2 of bypass, and the control of above-mentioned T1, finally control T2.
In addition, the present invention can also realize the sulfur SO of temperature, humidity and flue gas
3independence control, realize best udst separation effect, that is: regulate sulfur by exhaust gas cooler 11, humidity and temperature can be taken into account simultaneously and regulate; Regulate humidity by moistening and lowering temperature device 12, temperature and sulfur can be taken into account simultaneously; Temperature is regulated by injecting mixing section 2.
Claims (6)
1. one kind has the efficient corrosion resisting exhaust gas purification system of the modified function of temperature adjustment, it is characterized in that: described system is made up of lower the temperature modified section (1), mixing section (2), udst separation section (3), bypass air channel (5), ash bucket (4) and ash exhauster (41), lower the temperature modified section (1), mixing section (2), udst separation section (3) connect successively; Lower the temperature modified section (1) be connected with gas inlet respectively with bypass air channel (5); Bypass air channel (5) is connected with mixing section (2); Described ash bucket (4) is positioned at cooling modified section of (1), mixing section (2), udst separation section (3) below, and ash exhauster (41) is arranged on ash bucket (4) end.
2. system according to claim 1, it is characterized in that, modified section of described cooling (1) is containing exhaust gas cooler (11), moistening and lowering temperature device (12) or simultaneously containing exhaust gas cooler (11) and moistening and lowering temperature device (12), the cooling medium C in exhaust gas cooler (11) is the mixture of liquid, gas or gas and liquid.
3. system according to claim 2, described exhaust gas cooler (11) is divided into many groups, organizes exhaust gas cooler (11) more and connects successively; One or more in the material of each group of exhaust gas cooler (11), structure, cooling medium are different.
4. system according to claim 1, is characterized in that, system also includes modifying device, is placed in mixing section (2), lower the temperature modified section (1) or bypass air channel (5).
5. system according to claim 1, it is characterized in that, described udst separation section (3) is containing electric dust collector (31), dust removal by filtration device (32) or contain electric dust collector (31) and dust removal by filtration device (32) simultaneously.
6. system according to claim 1, is characterized in that, is also provided with flow control valve (51) in bypass air channel (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236975.4U CN204746015U (en) | 2015-04-17 | 2015-04-17 | High -efficient anticorrosive tail -gas clean -up system with quenching and tempering function adjusts temperature |
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| CN201520236975.4U CN204746015U (en) | 2015-04-17 | 2015-04-17 | High -efficient anticorrosive tail -gas clean -up system with quenching and tempering function adjusts temperature |
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| CN204746015U true CN204746015U (en) | 2015-11-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104771996A (en) * | 2015-04-17 | 2015-07-15 | 杭州兴环科技开发有限公司 | Efficient and anticorrosive tail gas purification method and efficient and anticorrosive tail gas purification system with temperature-regulating and conditioning functions |
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2015
- 2015-04-17 CN CN201520236975.4U patent/CN204746015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104771996A (en) * | 2015-04-17 | 2015-07-15 | 杭州兴环科技开发有限公司 | Efficient and anticorrosive tail gas purification method and efficient and anticorrosive tail gas purification system with temperature-regulating and conditioning functions |
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Effective date of registration: 20160524 Address after: 361100 No. 1178-1188, spring road, industrial zone, torch hi tech Zone (Xiangan), Fujian, Xiamen Patentee after: Xiamen Savings Environmental Co., Ltd. Address before: Hangzhou City, Zhejiang province 310018 poplar economic and Technological Development Zone Street No. 6 Street No. 452 building 3 room 103 Patentee before: Hangzhou ISAW Technology Limited |
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| CP01 | Change in the name or title of a patent holder |
Address after: 361100 No. 1178-1188, spring road, industrial zone, torch hi tech Zone (Xiangan), Fujian, Xiamen Patentee after: Xiamen Zhongchuang Environmental Protection Technology Co., Ltd Address before: 361100 No. 1178-1188, spring road, industrial zone, torch hi tech Zone (Xiangan), Fujian, Xiamen Patentee before: XIAMEN SAVINGS ENVIRONMENTAL Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |