CN204933233U - A kind of device removing sulfur dioxide in flue gas - Google Patents
A kind of device removing sulfur dioxide in flue gas Download PDFInfo
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- CN204933233U CN204933233U CN201520674137.5U CN201520674137U CN204933233U CN 204933233 U CN204933233 U CN 204933233U CN 201520674137 U CN201520674137 U CN 201520674137U CN 204933233 U CN204933233 U CN 204933233U
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Abstract
The utility model relates to a kind of device removing sulfur dioxide in flue gas, and described device comprises: the gas-liquid reaction apparatus adopting hypergravity machine, lean solution groove, lean pump, knockout drum, sedimentation regeneration tank.Lean pump is arranged between gas-liquid reaction apparatus inlet and lean solution groove liquid outlet.Knockout drum import exports with gas-liquid reaction apparatus gas-liquid mixture and is connected, and the liquid outlet of knockout drum bottom is connected with sedimentation regeneration tank inlet, and sedimentation regeneration tank liquid outlet is connected with lean solution groove inlet.Device described in the utility model, equipment volume is little, and pressure drop is low, and operating cost is low.Desulfurization regeneration system is separated with gas-liquid reaction apparatus, and what make to enter gas-liquid reaction apparatus is clear liquid all the time, thoroughly solves the problem of gas-liquid reaction apparatus fouling and clogging.
Description
Technical field
The utility model belongs to flue gas desulfurization technique field, is specifically related to the device that a kind of hypergravity machine removes sulfur dioxide in flue gas.
Background technology
Flue gas desulfurization is the desulfurization method of large-scale commercial application in the world at present.Whether have water to participate in by sweetening process and the dry form that wets of desulfurization product, flue gas desulfurization can be divided into again wet method, semidry method and dry method three class technique.The desulfurization product of dry method, semidry method is dry powder-shaped, easily, technique is comparatively simple in process, and investment is general lower than conventional wet, but with the Ca/S (calcium to sulphur mole ratio) of the dry method of lime or lime masonry desulfurizing agent, semidry method than high, the utilization rate of desulfuration efficiency and desulfurizing agent is lower.Wet Flue Gas Desulfurization Technique is ripe, and efficiency is high, and Ca/S is than low, reliable, easy and simple to handle, becomes most important, the most widely used method of current flue gas scrubbing CO_2.
The main equipment of conventional wet is absorption tower, or equipment volume is huge, and floor space is large, and efficiency is low, such as: the equipment such as spray column; Or investment is large, pressure drop is high, and energy consumption is high, and operating cost is high, and easily blocks.Such as: packed tower, sieve-plate tower, eddy flow tower etc.And application lime (lime stone)-easy fouling of gypsum and blocking more widely at present, causes the year utilization of capacity of desulphurization system low.
High-gravity technology is the chemical separation technology of a new generation, and in super gravity field, the Surface Renewal of gas, liquid forces to carry out, and thus has the mass transfer intensity that the filler tower height in the proportion field of force is a lot.Its core technology is high-gravity rotating bed.
Number of patent application is a kind of method that the patent of invention of CN201110076120.6 discloses removing hydrogen sulfide in gas phase through oxidization under high gravity field, it is contacted with H 2 S-containing gas adverse current or cross-flow in desulfurization hypergravity machine by desulfurizing agent, then after sulfureted for richness desulfurizing agent being added sulphur sedimentation agent, contact regenerating adverse current or cross-flow in hypergravity machine with air, described desulfurizing agent is Complexing Iron, aqueous slkali, sulfur modifier, the mixed solution of defoamer composition, the concentration of the iron ion in mixed solution is 0.1-10g/L, pH is at 8.0-9.2, sulfur modified agent concentration is 10-200ppm, anti-foam agent concentration is 5-50ppm.Described application for a patent for invention adopts hypergravity machine to replace traditional low mass transfer efficiency reactor, cross_flow rotating packed bed reactor is all adopted in Oxidation of Hydrogen Sulfide and catalyst regeneration, enhance process mass-transfer efficiency, shorten oxidation sweetening and desulfurizer regeneration time, have employed sedimentation agent with sulfur modifier acting in conjunction at sulphur subsidence stage in addition, the sulphur sedimentation time is shortened.The device removing hydrogen sulfide in gas phase that this patent of invention uses comprises: desulfurization hypergravity machine, rich solution pump, sedimentation agent pump, sedimentation agent groove, regeneration hypergravity machine, explosion-proof fan, lean pump, lean solution groove, sedimentation pump, subsider and centrifuge.
Described in foregoing invention patent method use as desulfurizing agent complicated process of preparation such as Complexing Iron, sulfur modifier, defoamers, described in remove hydrogen sulfide in gas phase adopt device, be both provided with desulfurization hypergravity machine, be provided with again regeneration hypergravity machine, complex structure.
Summary of the invention
For the above-mentioned problems in the prior art, this is practical novelly provides that a kind of desulfuration efficiency is high, pressure drop is little or, the device that remove sulfur dioxide in flue gas that can be widely used in the equipment such as coal-burning boiler large without pressure drop, gas liquid ratio.
Remove a device for sulfur dioxide in flue gas, comprising: gas-liquid reaction apparatus, lean solution groove, lean pump, knockout drum, sedimentation regeneration tank.
Gas-liquid reaction apparatus is by gas-liquid reaction apparatus inlet and lean pump UNICOM, and oil-poor pump is by oil-poor groove liquid outlet and oil-poor groove UNICOM; Be arranged on the oil-poor groove inlet on oil-poor groove and the sedimentation regeneration tank liquid outlet UNICOM be arranged on sedimentation regeneration tank; Gas-liquid reaction apparatus arranges gas-liquid reaction apparatus air inlet and the outlet of gas-liquid reaction apparatus gas-liquid mixture, and gas-liquid reaction apparatus is respectively by the outlet of gas-liquid reaction apparatus gas-liquid mixture and knockout drum import and knockout drum UNICOM; Knockout drum top and bottom arrange knockout drum gas outlet and knockout drum liquid outlet respectively, and knockout drum is by knockout drum liquid outlet and sedimentation regeneration tank inlet UNICOM.
Arrange and flow hypergravity machine in described gas-liquid reaction apparatus.
Sulfur-containing smoke gas in device described in the utility model is imported by gas-liquid reaction apparatus air inlet, doctor solution in lean solution groove is entered by gas-liquid reaction apparatus inlet through lean pump, sulfur dioxide in flue gas and doctor solution produce and react in gas-liquid reaction apparatus, the de-sulfur dioxide fallen in flue gas.
Doctor solution described in the utility model is preferably NaOH, aqueous slkali or lime stone.
Compared with prior art, the utility model has the following advantages:
1, gas-liquid reaction apparatus described in the utility model adopts and flows hypergravity machine, the rotor packing layer rotated provides except efficient mass transfer and reacting environment except flue gas and separation of flow liquid two-phase, can do work to gas phase simultaneously, for flue gas provides the pressure head of 500Pa to 2500Pa, make and flow the flue gas pressure drop reduction in hypergravity machine, and to there is negative pressure drop, reduce further the power of flue gas blower fan.
2, the gas-liquid two-phase in device described in the utility model is being forced dispersion by also flowing in packing layer that hypergravity machine is rotating, and gas-liquid can fully contact, and makes desulfuration efficiency up to more than 99%.
3, the gas liquid ratio in the sweetening process in device described in the utility model is up to 400 to 3000, and therefore the circulating consumption of doctor solution is low.
4, carry out in the equipment of the regenerative process absorbing the doctor solution of sulfur dioxide in device described in the utility model outside gas-liquid reaction apparatus, be that desulfurization clear liquid and sulfur dioxide produce reaction and carrys out purifying smoke in gas-liquid reaction apparatus, therefore the phenomenon of fouling and blocking can not occur in gas-liquid reaction apparatus.
Accompanying drawing explanation
Fig. 1 is the structural representation removing the device of sulfur dioxide in flue gas described in the utility model.
Shown in figure: 1-gas-liquid reaction apparatus, 11-gas-liquid reaction apparatus air inlet, 12-gas-liquid reaction apparatus inlet, 13-gas-liquid reaction apparatus gas-liquid mixture exports; 2-lean solution groove, 21-lean solution groove liquid outlet, 22-lean solution groove inlet; 3-lean pump; 4-knockout drum, the import of 41-knockout drum, 42-knockout drum liquid outlet, 43-knockout drum gas outlet; 5-sedimentation regeneration tank, 51-sedimentation regeneration tank inlet, 52-sedimentation regeneration tank liquid outlet.
Detailed description of the invention
Below in conjunction with Figure of description and detailed description of the invention, device described in the utility model is described further.Described detailed description of the invention, only for being described further device described in the utility model, does not limit protection domain of the present utility model.
As shown in Figure 1, device described in the utility model comprises: gas-liquid reaction apparatus 1, lean solution groove 2, lean pump 3, knockout drum 4, sedimentation regeneration tank 5.
Gas-liquid reaction apparatus 1 is by gas-liquid reaction apparatus inlet 12 and lean pump 3 UNICOM, and oil-poor pump 3 is by oil-poor groove liquid outlet 21 and oil-poor groove 2 UNICOM; Be arranged on the oil-poor groove inlet 22 on oil-poor groove 2 and sedimentation regeneration tank liquid outlet 52 UNICOM be arranged on sedimentation regeneration tank 5; Gas-liquid reaction apparatus 1 arranges gas-liquid reaction apparatus air inlet 11 and export 13 with gas-liquid reaction apparatus gas-liquid mixture, and gas-liquid reaction apparatus 1 is by gas-liquid reaction apparatus gas-liquid mixture outlet 13 and knockout drum import 41 and knockout drum 4 UNICOM; Knockout drum 4 top and bottom arrange knockout drum gas outlet 43 and knockout drum liquid outlet 42 respectively, sedimentation regeneration tank inlet 51 UNICOM of knockout drum 4 by knockout drum liquid outlet 42 and sedimentation regeneration tank 5 are arranged.
Gas-liquid reaction apparatus 1 described in the utility model adopts hypergravity machine.
The operation principle removing the device of sulfur dioxide in flue gas described in the utility model is:
Gas-liquid reaction apparatus air inlet 11 imports sulfur-containing smoke gas, doctor solution in lean solution groove 2 enters through the gas-liquid reaction apparatus inlet 12 of lean pump 3 by gas-liquid reaction apparatus 1, sulfur dioxide in flue gas and doctor solution react in gas-liquid reaction apparatus 1, to remove, to reduce the sulfur dioxide in flue gas.
Flowed into the doctor solution of the flue gas after the desulfurization of gas-liquid mixture outlet 13 outflow of gas-liquid reaction apparatus 1 and sulfur dioxide absorption by the import 41 of knockout drum, in knockout drum 4, carry out gas-liquid separation.
The inlet 51 of sedimentation regeneration tank 5 flows into by the isolated doctor solution absorbing sulfur dioxide in flue gas of knockout drum 4, by regenerating with lime reaction, doctor solution after regeneration flows into lean solution groove 2 by the sedimentation regeneration tank liquid outlet 52 of sedimentation regeneration tank 5, for recycling.Because regenerative process is carried out outside gas-liquid reaction apparatus 1, be that desulfurization clear liquid and sulfur dioxide react and carrys out purifying smoke in gas-liquid reaction apparatus 1, therefore the problem of equipment scaling blocking can not occur.
A mist eliminator is set above the knockout drum 4 of device described in the utility model, a large amount of liquid foams that flue gas after desulfurization goes out to carry secretly along knockout drum 4 rotating separation, then upwards flow along the pipeline be arranged in knockout drum 4, emptying or to enter chimney emptying by the knockout drum gas outlet 43 above knockout drum after removing described liquid foam by mist eliminator.
The gas-liquid reaction apparatus 1 of device described in the utility model provides the pressure head of 500Pa to 2500Pa for flue gas, to make the pressure drop of gas-liquid reaction apparatus 1 obviously reduce, even occurs negative pressure drop, significantly reduces the power of flue gas blower fan.
Gas-liquid reaction apparatus 1 inside described in the utility model arranges rotor packing layer, flue gas and doctor solution enter in hypergravity rotor packing layer by the inner edge of rotor packing layer simultaneously, in the packing layer rotated by hypergravity machine, flow contact, be forced dispersion, gas-liquid fully contacted.Desulfuration efficiency is made to reach more than 90%, and to as high as more than 99%.
Device described in the utility model can obtain the gas liquid ratio of 700-3000 in sweetening process, significantly reduces the circulating consumption of doctor solution.The doctor solution absorbing sulfur dioxide in flue gas enters sedimentation regeneration tank, use lime regenerates, sediment after regeneration delivers to oxidation trough (what structure oxidation trough is arranged in) after being separated, what and be processed into gypsum recovery (being processed by device), thus avoid causing secondary pollution.
Provide application device described in the utility model below, the flue gas of coal-burning boiler is carried out to two examples of desulfurization.
Example 1:
Import flue gas flow 60m
3/ h, sulfur dioxide concentration 1500mg/m
3, the Na ion concentration of absorbing liquid is 2.5mol/l, and absorbing liquid flow is 100l/h, hypergravity machine rotating speed 600r/min, and after whole system operation 3min is stable, after de-, flue gas sulphur is containing being 6mg/m
3, smoke desulfurization efficiency is 99.6%.
Example 2:
Import flue gas flow 23000m
3/ h, sulfur dioxide concentration 580mg/m
3, the Na ion concentration of absorbing liquid is 1mol/l, and absorbing liquid flow is 20 tons/m
3, hypergravity machine rotating speed 240r/min, after de-after system run all right, flue gas sulphur contains for being less than 1mg/m
3, smoke desulfurization efficiency is 99.82%
The utility model is not limited to above-mentioned embodiment, those skilled in the art make to any apparent improvement of above-mentioned embodiment or change, all can not exceed the protection domain of this novel design and claims.
Claims (5)
1. one kind removes the device of sulfur dioxide in flue gas, it is characterized in that, described device comprises: gas-liquid reaction apparatus (1), lean solution groove (2), lean pump (3), knockout drum (4), sedimentation regeneration tank (5), gas-liquid reaction apparatus (1) is by gas-liquid reaction apparatus inlet (12) and lean pump (3) UNICOM, oil-poor pump (3) is by oil-poor groove liquid outlet (21) and oil-poor groove (2) UNICOM, be arranged on the oil-poor groove inlet (22) on oil-poor groove (2) and sedimentation regeneration tank liquid outlet (52) UNICOM be arranged on sedimentation regeneration tank (5), gas-liquid reaction apparatus (1) is arranged gas-liquid reaction apparatus air inlet (11) to export (13) with gas-liquid reaction apparatus gas-liquid mixture, gas-liquid reaction apparatus (1) is by gas-liquid reaction apparatus gas-liquid mixture outlet (13) and knockout drum import (41) and knockout drum (4) UNICOM, knockout drum (4) top and bottom arrange knockout drum gas outlet (43) and knockout drum liquid outlet (42) respectively, knockout drum (4) is by upper sedimentation regeneration tank inlet (51) UNICOM arranged of knockout drum liquid outlet (42) and sedimentation regeneration tank (5).
2. the device removing sulfur dioxide in flue gas according to claim 1, is characterized in that, gas-liquid reaction apparatus (1) is parallel hypergravity machine.
3. the device removing sulfur dioxide in flue gas according to claim 1, it is characterized in that, knockout drum (4) top arranges the mist eliminator being used for the liquid foam that removing goes out along knockout drum (4) rotating separation through the flue gas of gas-liquid reaction apparatus (1) desulfurization.
4. the device removing sulfur dioxide in flue gas according to claim 1, is characterized in that, the pressure head of gas-liquid reaction apparatus (1) is 500Pa to 2500Pa.
5. the device removing sulfur dioxide in flue gas according to claim 1, is characterized in that, gas-liquid reaction apparatus (1) inside arranges rotor packing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520674137.5U CN204933233U (en) | 2015-09-01 | 2015-09-01 | A kind of device removing sulfur dioxide in flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520674137.5U CN204933233U (en) | 2015-09-01 | 2015-09-01 | A kind of device removing sulfur dioxide in flue gas |
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|---|---|
| CN204933233U true CN204933233U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520674137.5U Expired - Fee Related CN204933233U (en) | 2015-09-01 | 2015-09-01 | A kind of device removing sulfur dioxide in flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456850A (en) * | 2022-01-18 | 2022-05-10 | 宁波章甫能源科技有限公司 | Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet method |
-
2015
- 2015-09-01 CN CN201520674137.5U patent/CN204933233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456850A (en) * | 2022-01-18 | 2022-05-10 | 宁波章甫能源科技有限公司 | Device and method for removing organic sulfur and inorganic sulfur in coal gas by wet method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180901 |
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| CF01 | Termination of patent right due to non-payment of annual fee |