CN102961961B - Desulfurizer and sulfur method - Google Patents

Desulfurizer and sulfur method Download PDF

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Publication number
CN102961961B
CN102961961B CN201210519529.5A CN201210519529A CN102961961B CN 102961961 B CN102961961 B CN 102961961B CN 201210519529 A CN201210519529 A CN 201210519529A CN 102961961 B CN102961961 B CN 102961961B
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China
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wide diameter
desulfurizer
flue
import
flue gas
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CN201210519529.5A
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Chinese (zh)
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CN102961961A (en
Inventor
朱学智
蒋和团
郭英强
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碧水蓝天环境工程有限公司
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Publication of CN102961961A publication Critical patent/CN102961961A/en
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Abstract

The invention provides a kind of desulfurizer and sulfur method.Wherein, desulfurizer comprises: wide diameter portion (10), is vertically arranged in flue, and wide diameter portion (10) has the import and outlet that are connected with flue.Desulfurizer structure of the present invention is simple and can effectively improve desulfuration efficiency and sorbent utilization.

Description

Desulfurizer and sulfur method
Technical field
The present invention relates to boiler desulfurization field, in particular to a kind of desulfurizer and sulfur method.
Background technology
In the boiler of prior art, the desulfurization of general employing stove combustion, its method adopts in burning to mix desulfurizing agent (such as calcium carbonate) or furnace sorbent injection desulfurization etc.But the desulfurizing agent in said method generally fully cannot participate in reaction, directly affects the utilization rate of desulfuration efficiency and desulfurizing agent.
In order to solve the problem, in prior art, intercept and capture unreacted desulfurizing agent by increasing absorption tower outward at back-end ductwork, continue sulfur dioxide absorption, thus reach the effect of the utilization rate improving desulfuration efficiency and desulfurizing agent.
But said method needs to increase independently absorption tower outward at back-end ductwork, directly cause that floor space is large, equipment investment costly and the problem such as energy consumption is high.
Summary of the invention
It is simple and effectively can improve desulfurizer and the sulfur method of desulfuration efficiency and sorbent utilization that the present invention aims to provide a kind of structure.
To achieve these goals, according to an aspect of the present invention, provide a kind of desulfurizer, comprising: wide diameter portion, be vertically arranged in flue, and wide diameter portion has the import and outlet that are connected with flue.
Further, desulfurizer of the present invention also comprises: collection unit, and for collecting the desulfurizing agent in flue gas, collection unit is connected to the bottom of wide diameter portion, and the bottom along wide diameter portion extends downwards gradually with shrinking; Device for discharging, is connected with collection unit; Conveying device, is connected with the outlet of device for discharging and the desulfurizing agent be connected with collection unit by pipeline in the flue gas making to collect is back in wide diameter portion.
Further, the middle part of pipeline and wide diameter portion and/or middle and upper part are communicated with.
Further, desulfurizer of the present invention also comprises humidifying device, and it comprises the multiple shower nozzles be connected on wide diameter portion.
Further, multiple shower nozzle forms the multilayer vertically arranged, and every layer all has the multiple shower nozzles circumferentially distributed.
Further, multiple nozzle connecting is connected on the bottom of wide diameter portion and corresponding with the position of import.
Further, desulfurizer of the present invention also comprises: dissolving tank, is connected with device for discharging, for dissolving the desulfurizing agent in the flue gas collected; Liquid-solid separation device, is connected with dissolving tank, and for separating of the liquid in dissolving tank and solid, the liquid be separated is back in wide diameter portion by pipeline.
Further, pipeline is connected to the bottom of wide diameter portion and corresponding with the position of import.
Further, filter is provided with between liquid-solid separation device and liquid transporting apparatus.
Further, desulfurizer of the present invention also comprises the auxiliary adding set adding desulfurizing agent in conveying device.
Further, desulfurizer of the present invention also comprises the auxiliary adding set adding alkaline solution in pipeline.
Further, the axial line of wide diameter portion is crossing with the axial line of the horizontal segment of flue, and desulfurizer also comprises the deflector being arranged on entrance location and rises in the shape of a spiral in wide diameter portion to make flue gas.
Further, the horizontal segment of flue is tangentially connected on wide diameter portion.
Further, import is connected with the horizontal segment of the flue of upstream, and the position of outlet in the vertical direction is higher than import, and outlet is connected with the deduster in downstream.
According to a further aspect in the invention, provide a kind of sulfur method, comprise the following steps: allow flue gas enter in the wide diameter portion of vertically setting to reduce flow velocity from the horizontal segment of flue; Desulphurization reaction is carried out in wide diameter portion.
Further, sulfur method of the present invention is further comprising the steps of: the desulfurizing agent in the bottom collection flue gas of wide diameter portion; Desulfurizing agent discharging in the flue gas collected is delivered in wide diameter portion.
Further, sulfur method of the present invention also comprises spray into water smoke in wide diameter portion.
Further, further comprising the steps of between discharging step and supplying step: to dissolve the desulfurizing agent collected; Liquid in separate dissolved pond and solid, make the liquid backflow be separated in wide diameter portion.
Further, after the separation step, also comprise: filter the liquid be separated.
Apply technical scheme of the present invention, the internal diameter of wide diameter portion is greater than the internal diameter of flue, and flue gas is mingled with cigarette ash (desulfurizing agent) and enters in flue from burner hearth, and because the internal diameter of flue is less, the speed of flue gas can be very fast.After flue gas enters wide diameter portion from flue, velocity of flue gas is caused to decline because internal diameter increases, the decline of speed can prolong smoke time of passing through, and then reaction time of sulfur dioxide in prolong smoke and desulfurizing agent thus improve desulfuration efficiency and sorbent utilization.Meanwhile, due to speed decline the cigarette ash in flue gas also can be made to assemble gradually thus formed several particle cluster to be suspended in wide diameter portion or with flue gas reverse flow, make like this desulfurizing agent can and carbon dioxide between react fully.Desulfurizer structure of the present invention is simple, can set up said structure when newly-built flue, or is formed existing flue appropriate reconstruction.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment one according to desulfurizer of the present invention;
Fig. 2 shows the structural representation of the deflector of the desulfurizer of Fig. 1;
Fig. 3 shows the connection diagram of the wide diameter portion of embodiment two according to desulfurizer of the present invention and the horizontal segment of flue; And
Fig. 4 shows the structural representation of the embodiment three according to desulfurizer of the present invention; .
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the desulfurizer of embodiment one comprises: wide diameter portion 10, and in the present embodiment, wide diameter portion 10 is in tubular.This wide diameter portion 10 is vertically arranged in flue, in the present embodiment, the bottom of wide diameter portion 10 is provided with the import 11 be connected with the horizontal segment 1 of flue, and the top of wide diameter portion 10 is provided with outlet 12, outlet 12 is connected with the vertical section 2 of flue, and this outlet 12 is positioned at the upstream of deduster.
The internal diameter of the horizontal segment 1 of flue and the vertical section 2 of flue is in the scope of 1m to 1.5m, and the internal diameter of wide diameter portion 10 is in the scope of 4m to 6m, and in embodiment one, the internal diameter of the horizontal segment 1 of flue and the vertical section 2 of flue is 1.5m, and the internal diameter of wide diameter portion 10 is 5m.Flue gas is mingled with cigarette ash (desulfurizing agent) and enters in the horizontal segment 1 of flue from burner hearth (not shown), and because the internal diameter of the horizontal segment 1 of flue is less, the speed of flue gas can be very fast.After flue gas enters wide diameter portion 10 from the horizontal segment 1 of flue, velocity of flue gas is caused to decline because internal diameter increases, the decline of speed can prolong smoke time of passing through, and then reaction time of sulfur dioxide in prolong smoke and desulfurizing agent thus improve desulfuration efficiency and sorbent utilization.Meanwhile, due to speed decline the cigarette ash in flue gas also can be made to assemble gradually thus formed several particle cluster to be suspended in wide diameter portion 10 or with flue gas reverse flow, make like this desulfurizing agent can and carbon dioxide between react fully.The desulfurizer structure of embodiment one is simple, can set up said structure when newly-built flue, or is formed existing flue appropriate reconstruction.
From the above, the flesh and blood of the application is that increase internal diameter is greater than the wide diameter portion 10 of flue, and does not lie in the positions of import 11 and outlet 12 setting.Particularly, in the above-described embodiments, one skilled in the art will appreciate that import 11 is not limited to be arranged on the bottom of wide diameter portion 10, outlet 12 is not limited to the top being arranged on wide diameter portion 10.In preferred embodiments, need to make the position of outlet 12 in the vertical direction higher than import 11.Certainly, as feasible embodiment, in not shown embodiment, also can be that the position of import 11 in the vertical direction is higher than outlet 12.As shown in Figure 1, in embodiment one, increase gradually when being suspended in the particle cluster in wide diameter portion 10, it can overcome buoyancy because of its deadweight.In order to improve desulfuration efficiency and sorbent utilization further, desulfurizer also comprises: collection unit 20, device for discharging 30 and conveying device 40.The particle cluster that collection unit 20 is formed for collecting desulfurizing agent, collection unit 20 is connected to the bottom of wide diameter portion 10 and the bottom along wide diameter portion 10 extends downwards gradually with shrinking, in funnel-form in embodiment one, desulfurizing agent slides to the exit of collection unit 20 under the sidewall of collection unit 20.Device for discharging 30 is connected with collection unit 20 and is arranged on the exit of collection unit 20, and for the desulfurizing agent collected in collection unit 20 is expelled to conveying device 40 from collection unit 20, device for discharging 30 can adopt star-like discharging device, screw input feeder etc.Conveying device 40 is connected with the outlet of device for discharging 30 and is connected the desulfurizing agent in flue gas is back in wide diameter portion 10 with collection unit 20 by pipeline 41.Conveying device 40 preferably adopts compressed air to carry when carrying desulfurizing agent.As shown in the above, desulfurizer can collect unreacted desulfurizing agent, and makes it be back in wide diameter portion 10 repeatedly to react with sulfur dioxide.Meanwhile, because desulfurizing agent is constantly transported in wide diameter portion 10, effectively can improve the density of the desulfurizing agent in wide diameter portion 10, and then enable it react with sulfur dioxide better.Middle part and/or the middle and upper part of pipeline 41 and wide diameter portion 10 are communicated with, and in embodiment one, pipeline 41 is communicated with the middle and upper part of wide diameter portion 10.
In embodiment one, desulfurizer also comprises humidifying device 50, and it comprises the multiple shower nozzles be connected on wide diameter portion 10.Humidifying device 50 can spray into water smoke in wide diameter portion 10, and desulfurizing agent and water smoke react and generates alkaline matter (namely hydration reaction occurring), can react with sulfur dioxide better like this.Meanwhile, too increase the deadweight of desulfurizing agent after desulfurizing agent and water smoke react, make it more easily sink and be collected.Preferably, multiple shower nozzle forms the multilayer vertically arranged, and every layer all has the multiple shower nozzles circumferentially distributed, and the position of shower nozzle and number needs will be determined according to actual conditions.In embodiment one, be provided with two-layer shower nozzle, multiple nozzle connecting is connected on the bottom of wide diameter portion 10 and corresponding with the position of import 11.The selection of above-mentioned position can make the desulfurizing agent very first time and water smoke react so that improve desulfuration efficiency and sorbent utilization.
As shown in Figure 2, in embodiment one, the axial line of wide diameter portion 10 is crossing with the axial line of the horizontal segment 1 of flue, namely the horizontal segment 1 of flue passes through the axial line of wide diameter portion 10, in order to the time of staying of prolong smoke in wide diameter portion 10, desulfurizer also comprises the deflector 13 being arranged on import 11 position, and as shown in Figure 1, this deflector 13 changes flue gas and enters the direction of wide diameter portion 10 thus flue gas can be made to increase in the shape of a spiral in wide diameter portion 10.Like this, can the time of staying of prolong smoke in wide diameter portion 10 thus reaction of propagation time effectively.
As shown in Figure 1, in order to improve desulfuration efficiency, the desulfurizer of embodiment one also comprises the first auxiliary adding set 61 adding desulfurizing agent in conveying device 40.
As shown in Figure 3, the desulfurizer of embodiment two and the difference of embodiment one are only, the desulfurizer of embodiment two does not have deflector 13, in embodiment two, flue gas can be made equally to increase in the shape of a spiral in wide diameter portion 10, as shown in Figure 3, the horizontal segment 1 of flue is tangentially connected on wide diameter portion 10.
As shown in Figure 4, the desulfurizer of embodiment three and the difference of embodiment one are, are back in wide diameter portion 10 after desulfurizing agent is dissolved as aqueous slkali by the desulfurizer of embodiment three.The desulfurizer of embodiment three, except having wide diameter portion 10, collection unit 20 and device for discharging 30 and conveying device 90, also comprises: dissolving tank 70 and liquid-solid separation device 80.Dissolving tank 70 is connected with device for discharging 30, for soaking and dissolve the desulfurizing agent collected.Liquid-solid separation device 80 is connected with dissolving tank 70, and for separating of the liquid in dissolving tank and solid, liquid-solid separation device can be plate and frame filter press etc.The liquid be separated utilizes conveying device 90 to be back in wide diameter portion 10 by pipeline 91.Conveying device 90 is preferably liquor pump.Pipeline 91 can be connected to middle and lower part and/or bottom, and in order to improve desulfuration efficiency further, pipeline 91 is connected to the bottom of wide diameter portion 10 and corresponding with the position of import 11.
The solid be separated is transported to ash silo, has certain humidity therefore, it is possible to effectively regulate the humidity of ash in ash silo due to this solid, without the need to spraying water or reducing injection flow rate when making them be transported by vehicle.On the other hand, solid collection herein can reduce the live load of deduster effectively.
As shown in Figure 4, in order to make the liquid entering wide diameter portion 10 meet standard, not easily blocking pipeline 91 and being connected to shower nozzle on wide diameter portion 10, preferably, between liquid-solid separation device 80 and liquid transporting apparatus 90, being provided with filter 100.
As shown in Figure 4, in order to improve desulfuration efficiency, desulfurizer also comprises the second auxiliary adding set 62 adding alkaline solution in pipeline 91.
Present invention also provides a kind of sulfur method, an embodiment according to the sulfur method of the application comprises the following steps:
Flue gas is allowed to enter from the horizontal segment of flue the wide diameter portion 10 vertically arranged interior to reduce flow velocity.The bottom of above-mentioned wide diameter portion 10 is provided with the import 11 be connected with the horizontal segment 1 of flue, and the top of wide diameter portion 10 or top are provided with outlet 12, and this outlet 12 is positioned at the upstream of deduster.The vertical section 2 of flue is connected with between outlet 12 and deduster.
Desulphurization reaction is carried out in wide diameter portion 10.Meanwhile, the desulfurizing agent in the bottom collection flue gas of wide diameter portion 10.Desulfurizing agent discharging in the flue gas collected is delivered in wide diameter portion 10.
In above process, collecting step can by being connected to the bottom of wide diameter portion 10 and the collection unit 20 extended with shrinking gradually along the bottom of wide diameter portion 10 realizes downwards.The desulfurizing agent collected in collection unit 20 needs by connect and the device for discharging 30 being arranged on the exit of collection unit 20 is expelled to conveying device 40.Device for discharging 30 can adopt star-like discharging device, screw input feeder etc.Conveying device 40 is connected with the outlet of device for discharging 30 and is connected the desulfurizing agent in flue gas is back in wide diameter portion 10 with collection unit 20 by pipeline 41.Conveying device 40 preferably adopts compressed air to carry when carrying desulfurizing agent.
In above process, water smoke can be sprayed in wide diameter portion 10.Like this, desulfurizing agent and water smoke react and generate alkaline matter (namely hydration reaction occurring), can react with sulfur dioxide better like this.
Another embodiment according to the sulfur method of the application comprises the following steps:
Flue gas is allowed to enter from the horizontal segment of flue the wide diameter portion 10 vertically arranged interior to reduce flow velocity.Structure and the annexation of wide diameter portion 10 are same as the previously described embodiments, do not repeat them here.
Desulphurization reaction is carried out in wide diameter portion 10.Meanwhile, the desulfurizing agent in the bottom collection flue gas of wide diameter portion 10.By the desulfurizing agent discharging of collecting, dissolve the desulfurizing agent collected.Liquid in separate dissolved pond and solid, filter the liquid be separated, make the liquid backflow after filtration in wide diameter portion 10.
In above process, collecting step can by being connected to the bottom of wide diameter portion 10 and the collection unit 20 extended with shrinking gradually along the bottom of wide diameter portion 10 realizes downwards.The desulfurizing agent collected in collection unit 20 needs by connect and the device for discharging 30 being arranged on the exit of collection unit 20 is expelled in dissolving tank 70 and carries out soaking and dissolving.Device for discharging 30 can adopt star-like discharging device, screw input feeder etc.Separating step can be realized by liquid-solid separation device 80, such as plate and frame filter press etc.The liquid be separated is back in wide diameter portion 10 by pipeline 91.Conveying device 90 is preferably liquor pump.Pipeline 91 can be connected to middle and lower part and/or bottom, and in order to improve desulfuration efficiency further, pipeline 91 is connected to the bottom of wide diameter portion 10 and corresponding with the position of import 11.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. a desulfurizer, is characterized in that, comprising:
Wide diameter portion (10), described wide diameter portion (10) is vertically arranged, and described wide diameter portion (10) has the import (11) that is connected with flue and exports (12), described import (11) arranges the bottom of described wide diameter portion (10), and described outlet (12) is arranged on the top of described wide diameter portion (10);
Collection unit (20), for collecting the desulfurizing agent in flue gas, described collection unit (20) is connected to the bottom of described wide diameter portion (10) and ground extension is shunk downwards gradually in the bottom along described wide diameter portion (10);
Device for discharging (30), is connected with described collection unit (20);
Conveying device (40), being connected with the outlet of described device for discharging (30) and passing through pipeline (41) is back in described wide diameter portion (10) with described collection unit (20) desulfurizing agent be connected in the described flue gas making to collect, and middle part and/or the middle and upper part of described pipeline (41) and described wide diameter portion (10) are communicated with;
Wherein, the axial line of described wide diameter portion (10) is crossing with the axial line of the horizontal segment (1) of described flue, described desulfurizer also comprises the deflector (13) being arranged on described import (11) position and rises in the shape of a spiral in described wide diameter portion (10) to make flue gas
Or the horizontal segment (1) of described flue is tangentially connected on described wide diameter portion (10) to make flue gas rise in the shape of a spiral in described wide diameter portion (10).
2. desulfurizer according to claim 1, is characterized in that, also comprises humidifying device (50), and it comprises the multiple shower nozzles be connected on described wide diameter portion (10).
3. desulfurizer according to claim 2, is characterized in that, described multiple shower nozzle forms the multilayer vertically arranged, and every layer all has the multiple shower nozzles circumferentially distributed.
4. desulfurizer according to claim 2, is characterized in that, described multiple nozzle connecting is connected on the bottom of described wide diameter portion (10) and corresponding with the position of described import (11).
5. the desulfurizer according to any one of claim 1 and 2, is characterized in that, also comprises the first auxiliary adding set (61) adding desulfurizing agent in described conveying device (40).
6. desulfurizer according to claim 1, it is characterized in that, described import (11) is connected with the horizontal segment (1) of the flue of upstream, the position of described outlet (12) in the vertical direction is higher than described import (11), and described outlet (12) is connected with the deduster in downstream.
7. a desulfurizer, is characterized in that, comprising:
Wide diameter portion (10), described wide diameter portion (10) is vertically arranged, and described wide diameter portion (10) has the import (11) that is connected with flue and exports (12), described import (11) arranges the bottom of described wide diameter portion (10), and described outlet (12) is arranged on the top of described wide diameter portion (10);
Collection unit (20), for collecting the desulfurizing agent in flue gas, described collection unit (20) is connected to the bottom of described wide diameter portion (10) and ground extension is shunk downwards gradually in the bottom along described wide diameter portion (10);
Device for discharging (30), is connected with described collection unit (20);
Dissolving tank (70), is connected with described device for discharging (30), for dissolving the desulfurizing agent in the described flue gas collected;
Liquid-solid separation device (80), is connected with described dissolving tank (70), for separating of the liquid in described dissolving tank and solid;
Conveying device (90), be connected with described liquid-solid separation device (80), described conveying device (90) makes the described liquid be separated be back in described wide diameter portion (10) by pipeline (91), and described pipeline (91) is connected to the bottom of described wide diameter portion (10) and corresponding with the position of described import (11);
Wherein, the axial line of described wide diameter portion (10) is crossing with the axial line of the horizontal segment (1) of described flue, described desulfurizer also comprises the deflector (13) being arranged on described import (11) position and rises in the shape of a spiral in described wide diameter portion (10) to make flue gas
Or the horizontal segment (1) of described flue is tangentially connected on described wide diameter portion (10) to make flue gas rise in the shape of a spiral in described wide diameter portion (10).
8. desulfurizer according to claim 7, is characterized in that, is provided with filter (100) between described liquid-solid separation device (80) and described conveying device (90).
9. the desulfurizer according to any one of claim 7 to 8, is characterized in that, also comprises the second auxiliary adding set (62) adding alkaline solution in described pipeline (91).
CN201210519529.5A 2012-12-06 2012-12-06 Desulfurizer and sulfur method CN102961961B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104096434A (en) * 2013-04-03 2014-10-15 厦门大学 Novel technology and novel device for dedusting and desulphurization of flue gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1401411A (en) * 2002-09-17 2003-03-12 山东大学 Compound desulfurizing process of circulating fluidized bed boiler
CN101596398A (en) * 2009-05-08 2009-12-09 朱学智 A kind of sulfur method again based on circulating fluidized bed boiler flue
CN202237741U (en) * 2011-09-20 2012-05-30 济钢集团国际工程技术有限公司 Desulfurizing tower used in sintering flue gas desulfurization process
CN203002209U (en) * 2012-12-06 2013-06-19 碧水蓝天环境工程有限公司 Desulfurizing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1401411A (en) * 2002-09-17 2003-03-12 山东大学 Compound desulfurizing process of circulating fluidized bed boiler
CN101596398A (en) * 2009-05-08 2009-12-09 朱学智 A kind of sulfur method again based on circulating fluidized bed boiler flue
CN202237741U (en) * 2011-09-20 2012-05-30 济钢集团国际工程技术有限公司 Desulfurizing tower used in sintering flue gas desulfurization process
CN203002209U (en) * 2012-12-06 2013-06-19 碧水蓝天环境工程有限公司 Desulfurizing device

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