CN103084058B - Flue gas dry desulfurization device - Google Patents
Flue gas dry desulfurization device Download PDFInfo
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- CN103084058B CN103084058B CN201310042676.2A CN201310042676A CN103084058B CN 103084058 B CN103084058 B CN 103084058B CN 201310042676 A CN201310042676 A CN 201310042676A CN 103084058 B CN103084058 B CN 103084058B
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Abstract
The invention discloses a flue gas dry desulfurization device. The device is a flue gas desulfurization device. According to the device, water spray amount in the desulfurization device is reduced, such that problems such as wall adhesion and scaling are avoided. The device comprises a flue gas inlet pipe, a desulfurization reactor, a settling chamber, a deduster, and a desulfurization agent recycling device. The flue gas inlet pipe communicates with the inlet of the desulfurization reactor. The outlet of the desulfurization reactor communicates with the settling chamber. A first flue gas outlet and a first desulfurization agent outlet allowing large-particle desulfurization agent to flow out are provided on the settling chamber. The first flue gas outlet communicates with the inlet of the deduster. A second flue gas outlet communicating with the external atmosphere and a second desulfurization agent outlet outputting desulphurization circulation ash are provided on the deduster. The first desulfurization agent outlet and the second desulfurization agent outlet are connected to the desulfurization agent recycling device. The desulfurization agent recycling device delivers recovered desulfurization agent to the inlet of the desulfurization reactor, such that the desulfurization agent can be used in flue gas desulfurization.
Description
Technical field
The present invention relates to flue gas desulfurization device, particularly a kind of flue gas dry desulfurizing device.
Background technology
Circulating Fluidized Bed Flue Gas Desulfurization Technology is that the gases such as HF fully mix the concurrent biochemical reaction of contact, have greatly improved the utilization ratio of desulfurizing agent by desulfurizing agent continuous SO2 in circulation and flue gas in reactor.Along with the continuous progress of technology and the continuous accumulation of experience, the desulfuration efficiency of this kind of method and wet method approach.But in engineering practice, due to excessive easily cause sticky wall and the fouling of spraying water in desulfurization reactor, the bottom of desulfurization reactor is prone to the problem that grey piece causes part flue blockage.
Summary of the invention
The object that the present invention will reach is just to provide a kind of flue gas dry desulfurizing device, has reduced the injection flow rate in desulfurization reactor, avoids occurring the problem of sticky wall and fouling.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of flue gas dry desulfurizing device, comprise smoke-intake pipe, desulfurization reactor, expansion chamber, deduster and desulfurizing agent recycling device, described smoke-intake pipe is communicated with the entrance of desulfurization reactor, the outlet of described desulfurization reactor is communicated with the entrance of expansion chamber, the first desulfurizing agent outlet that described expansion chamber is provided with the first exhanst gas outlet and flows out for bulky grain desulfurizing agent, described the first exhanst gas outlet is communicated with the entrance of deduster, the second desulfurizing agent outlet that described deduster is provided with the second exhanst gas outlet being communicated with ambient atmosphere and exports for desulphurization circulating ash, described the first desulfurizing agent outlet and the outlet of the second desulfurizing agent are connected on desulfurizing agent recycling device, described desulfurizing agent recycling device is delivered to the desulfurizing agent of recovery the porch of desulfurization reactor.
Further, described desulfurizing agent recycling device comprises humidifier and jet pump, the first desulfurizing agent outlet of described expansion chamber and the second desulfurizing agent outlet on deduster are connected in humidifier by desulfurizing agent input pipe, described humidifier is communicated with the porch of desulfurization reactor by desulfurizing agent efferent duct, and described jet pump is located on desulfurizing agent efferent duct.
Further, the porch of described desulfurization reactor is provided with double-current atomizing lance and is connected with desulfurizing agent efferent duct.
Further, the porch of described desulfurization reactor is cylindrical pipe, and described double-current atomizing lance is circumferentially uniform along the same horizontal cross-section of cylindrical pipe.
Further, the top of described humidifier is provided with water injector, and the bottom of described humidifier is provided with first-class wind transmission entrance.
Further, described desulfurizing agent input pipe is inclined tube, and one end of inclined tube is communicated with the second desulfurizing agent outlet, and the other end of inclined tube is communicated with humidifier, and described the first desulfurizing agent outlet is connected to the top of inclined tube, 6～8 ° of described inclined tube relative level face tilts.
Further, the bottom of described inclined tube is provided with second wind transmission entrance.
Further, the bottom of described expansion chamber is provided with the ash bucket of collecting bulky grain desulfurizing agent, and described the first desulfurizing agent outlet is located at the bottom of ash bucket.
Further, the bottom of described deduster is provided with the fluidisation storehouse of collecting desulphurization circulating ash, and the bottom in described fluidisation storehouse is provided with the 3rd fluidized wind entrance, and described the second desulfurizing agent outlet is located at sidepiece lower end or the bottom in fluidisation storehouse.
Further, described the second exhanst gas outlet is located at the top in fluidisation storehouse, is connected to air-introduced machine clean flue gas is entered to atmosphere through chimney on described the second exhanst gas outlet.
Adopt after technique scheme, tool of the present invention has the following advantages: desulfurizing agent is collected to also humidification and by jet pump, spray in desulfurization reactor, greatly increase the mixability of gas-liquid-solid three-phase in desulfurization reactor and be conducive to the carrying out of desulphurization reaction, improved the utilization rate of desulfuration efficiency and desulfurizing agent, reduced the injection flow rate in desulfurization reactor, avoided the problem of sticky wall and fouling, the adaptability that enhancing changes unit load, and can reduce to a great extent operating cost, reliable, safeguard simple.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is that double-current atomizing lance is arranged schematic diagram.
The specific embodiment
Be an embodiment of the present invention as illustrated in fig. 1 and 2, a kind of flue gas dry desulfurizing device, comprise smoke-intake pipe 1, desulfurization reactor 2, expansion chamber 3, deduster 4 and desulfurizing agent recycling device, described smoke-intake pipe is communicated with the entrance 21 of desulfurization reactor, the outlet 22 of described desulfurization reactor is communicated with the entrance 31 of expansion chamber, the first desulfurizing agent outlet 33 that described expansion chamber is provided with the first exhanst gas outlet 32 and flows out for bulky grain desulfurizing agent, described the first exhanst gas outlet is communicated with the entrance 41 of deduster, the second desulfurizing agent outlet 43 that described deduster is provided with the second exhanst gas outlet 42 being communicated with ambient atmosphere and exports for desulphurization circulating ash, described the first desulfurizing agent outlet and the outlet of the second desulfurizing agent are connected on desulfurizing agent recycling device, described desulfurizing agent recycling device is delivered to the desulfurizing agent of recovery the porch of desulfurization reactor.Described desulfurizing agent recycling device comprises humidifier 5 and jet pump 51, the first desulfurizing agent outlet of described expansion chamber and the second desulfurizing agent outlet on deduster are connected in humidifier by desulfurizing agent input pipe 52, described humidifier is communicated with the porch of desulfurization reactor by desulfurizing agent efferent duct 53, and described jet pump is located on desulfurizing agent efferent duct.The porch of described desulfurization reactor is provided with double-current atomizing lance 54 and is connected with desulfurizing agent efferent duct.As preferred structure, the porch of described desulfurization reactor is cylindrical pipe, and described double-current atomizing lance is circumferentially uniform along the same horizontal cross-section of cylindrical pipe.The desulfurizing agent of recovery is delivered to the porch of desulfurization reactor, has reduced the injection flow rate in desulfurization reactor, avoided the problem of sticky wall and fouling; Adopt double-current atomizing lance the desulfurizing agent reclaiming to be sprayed onto to the porch of desulfurization reactor, greatly strengthened the mixability of gas-liquid-solid three-phase in desulfurization reactor, then spray gun is evenly distributed in same plane, covered dramatically the entrance section of whole desulfurization reactor, more be conducive to the carrying out of desulphurization reaction, improve desulfuration efficiency.
The top of described humidifier is provided with water injector, and the bottom of described humidifier is provided with first-class wind transmission entrance 55, is blown into fluidized wind here, contributes to the even humidification of desulfurizing agent and the humidification of recovery abundant.Described desulfurizing agent input pipe is inclined tube, one end of inclined tube is communicated with the second desulfurizing agent outlet, the other end of inclined tube is communicated with humidifier, described the first desulfurizing agent outlet is connected to the top of inclined tube, 6～8 ° of described inclined tube relative level face tilts, inclined tube is convenient to carry bulky grain desulfurizing agent and desulphurization circulating ash.The bottom of described inclined tube is provided with second wind transmission entrance 56, is blown into fluidized wind here, makes the desulfurizing agent in inclined tube present fluidization.The bottom of described expansion chamber is provided with the ash bucket 34 of collecting bulky grain desulfurizing agent, described the first desulfurizing agent outlet is located at the bottom of ash bucket, during flue gas process expansion chamber, bulky grain desulfurizing agent settles down and falls into ash bucket, reduced on the one hand the load of deduster, reduced operating cost, by collecting bulky grain desulfurizing agent, it is carried out to humidification recycling on the one hand in addition, improve the utilization ratio of desulfurizing agent.The bottom of described deduster is provided with the fluidisation storehouse 44 of collecting desulphurization circulating ash, the bottom in described fluidisation storehouse is provided with the 3rd fluidized wind entrance 45, described the second desulfurizing agent outlet is located at sidepiece lower end or the bottom in fluidisation storehouse, passes into fluidized wind here, strengthens the fluid effect of desulphurization circulating ash in fluidisation storehouse.Described the second exhanst gas outlet is located at the top in fluidisation storehouse, is connected to air-introduced machine 46 clean flue gas is entered to atmosphere through chimney 6 on described the second exhanst gas outlet.
The present invention collects bulky grain desulfurizing agent and desulphurization circulating ash, after humidifier humidification, by jet pump and double-current atomizing lance, sprayed into the porch of desulfurization reactor, reasonably improved the mixability of gas-liquid-solid three-phase in desulfurization reactor, the carrying out that is conducive to desulphurization reaction, the utilization ratio that has improved desulfurizing agent, has reduced operating cost, has improved desulfuration efficiency; And by desulfurizing agent being carried out to humidification in desulfurization reactor outside, can reduce injection flow rate in desulfurization reactor, prevent from, in desulfurization reactor, the problems such as sticky wall and fouling occur, improved the stability of desulphurization system operation, and improved the adaptability that unit load is changed; Structural design is simple, convenient for installation and maintenance, and the cost of overhaul is low, is difficult for breaking down, workable, is applicable to the newly-built desulfurizer of various suffer small sets or transformation.
Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise depart from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (2)
1. a flue gas dry desulfurizing device, it is characterized in that: comprise smoke-intake pipe (1), desulfurization reactor (2), expansion chamber (3), deduster (4) and desulfurizing agent recycling device, described smoke-intake pipe is communicated with the entrance (21) of desulfurization reactor, the outlet of described desulfurization reactor (22) is communicated with the entrance (31) of expansion chamber, the first desulfurizing agent outlet (33) that described expansion chamber is provided with the first exhanst gas outlet (32) and flows out for bulky grain desulfurizing agent, described the first exhanst gas outlet is communicated with the entrance (41) of deduster, described deduster is provided with the second exhanst gas outlet (42) being communicated with ambient atmosphere and the second desulfurizing agent outlet (43) of exporting for desulphurization circulating ash, described the first desulfurizing agent outlet and the outlet of the second desulfurizing agent are connected on desulfurizing agent recycling device, described desulfurizing agent recycling device is delivered to the desulfurizing agent of recovery the porch of desulfurization reactor, described desulfurizing agent recycling device comprises humidifier (5) and jet pump (51), the first desulfurizing agent outlet of described expansion chamber and the second desulfurizing agent outlet on deduster are connected in humidifier by desulfurizing agent input pipe (52), described humidifier is communicated with the porch of desulfurization reactor by desulfurizing agent efferent duct (53), described jet pump is located on desulfurizing agent efferent duct, the porch of described desulfurization reactor is provided with double-current atomizing lance (54) and is connected with desulfurizing agent efferent duct, the porch of described desulfurization reactor is cylindrical pipe, described double-current atomizing lance is circumferentially uniform along the same horizontal cross-section of cylindrical pipe, the top of described humidifier is provided with water injector, the bottom of described humidifier is provided with first-class wind transmission entrance (55), described desulfurizing agent input pipe is inclined tube, one end of inclined tube is communicated with the second desulfurizing agent outlet, the other end of inclined tube is communicated with humidifier, described the first desulfurizing agent outlet is connected to the top of inclined tube, 6～8 ° of described inclined tube relative level face tilts, the bottom of described inclined tube is provided with second wind transmission entrance (56).
2. flue gas dry desulfurizing device according to claim 1, is characterized in that: the bottom of described expansion chamber is provided with the ash bucket (34) of collecting bulky grain desulfurizing agent, and described the first desulfurizing agent outlet is located at the bottom of ash bucket.
3,flue gas dry desulfurizing device according to claim 1, it is characterized in that: the bottom of described deduster is provided with the fluidisation storehouse (44) of collecting desulphurization circulating ash, the bottom in described fluidisation storehouse is provided with the 3rd fluidized wind entrance (45), and described the second desulfurizing agent outlet is located at sidepiece lower end or the bottom in fluidisation storehouse.
4,flue gas dry desulfurizing device according to claim 3, is characterized in that: described the second exhanst gas outlet is located at the top in fluidisation storehouse, is connected to air-introduced machine (46) clean flue gas is entered to atmosphere through chimney (6) on described the second exhanst gas outlet.
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| CN201310042676.2A CN103084058B (en) | 2013-01-31 | 2013-01-31 | Flue gas dry desulfurization device |
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| CN201310042676.2A CN103084058B (en) | 2013-01-31 | 2013-01-31 | Flue gas dry desulfurization device |
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| CN103084058B true CN103084058B (en) | 2014-01-29 |
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| CN104692689B (en) * | 2015-02-05 | 2018-01-23 | 江苏苏博特新材料股份有限公司 | The method and its device of the modified oxidized calcium swelling agent of coproduction after a kind of flue gas dry desulfurizing |
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|---|---|---|---|---|
| CN1307926A (en) * | 2000-12-15 | 2001-08-15 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN1490072A (en) * | 2003-08-26 | 2004-04-21 | 武汉凯迪电力股份有限公司 | Cyclic fluidizing dry flue desurlfurizing and duct collecting process by electric bag dust collector |
| CN1491739A (en) * | 2003-08-21 | 2004-04-28 | 武汉凯迪电力股份有限公司 | Smoke desulfurizing process by circulation fluid state dry method of layered feed back |
| CN102614747A (en) * | 2012-03-30 | 2012-08-01 | 蓝天环保设备工程股份有限公司 | Flue gas cleaning device and method for circulating fluidized bed through semi-dry method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307926A (en) * | 2000-12-15 | 2001-08-15 | 清华大学 | Dry cyclic suspension bed fume desulfurizing process and system |
| CN1491739A (en) * | 2003-08-21 | 2004-04-28 | 武汉凯迪电力股份有限公司 | Smoke desulfurizing process by circulation fluid state dry method of layered feed back |
| CN1490072A (en) * | 2003-08-26 | 2004-04-21 | 武汉凯迪电力股份有限公司 | Cyclic fluidizing dry flue desurlfurizing and duct collecting process by electric bag dust collector |
| CN102614747A (en) * | 2012-03-30 | 2012-08-01 | 蓝天环保设备工程股份有限公司 | Flue gas cleaning device and method for circulating fluidized bed through semi-dry method |
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Address after: 310051, Shaoxing, Zhejiang province Zhuji city shop Town Central Avenue, Traders Hotel, 5 floor Patentee after: Zhejiang Hai Yuan environment Science and Technology Ltd. Address before: 310051, Shaoxing, Zhejiang province Zhuji city shop Town Central Avenue, Traders Hotel, 5 floor Patentee before: Haiyuan Environmental Science & Technology Co., Ltd. |