CN204522735U - A kind of circulating fluid bed semi-drying method flue gas desulfurization device - Google Patents
A kind of circulating fluid bed semi-drying method flue gas desulfurization device Download PDFInfo
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- CN204522735U CN204522735U CN201520200854.4U CN201520200854U CN204522735U CN 204522735 U CN204522735 U CN 204522735U CN 201520200854 U CN201520200854 U CN 201520200854U CN 204522735 U CN204522735 U CN 204522735U
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Abstract
The utility model discloses a kind of circulating fluid bed semi-drying method flue gas desulfurization device, comprise desulfurizing tower, gas-solid separating device, air-introduced machine and chimney, described desulfurizing tower is provided with smoke inlet, exhanst gas outlet and water pistol, described gas-solid separating device is provided with entrance and exit, the entrance of described gas-solid separating device and the exhanst gas outlet UNICOM of desulfurizing tower, the outlet of described gas-solid separating device is connected with air-introduced machine, described air-introduced machine is connected with chimney, the smoke inlet of described desulfurizing tower is provided with flue gas heater and mixes the branch road of cold wind, the described branch road mixing cold wind is also provided with cold blast sliding valve.The utility model can adapt to the change of sinter fume flow and temperature completely; no matter sintering machine system start and stop or load change; guaranteeing in the non-caked and normal situation of desulphurization system negative pressure of sack cleaner filter bag; all can realize high bed pressure to run and high-efficiency desulfurization, equipment is safe and reliable to operation.
Description
Technical field
The utility model belongs to flue gas desulfurization technique field, is specifically related to a kind of circulating fluid bed semi-drying method flue gas desulfurization device.
Background technology
In circulating fluid bed semi-drying method flue gas desulfurization system cloud gray model, must carry out spraying water to make desulfurizing agent and SO
2react.Meanwhile, the filter bag in order to ensure the sack cleaner after desulfurizing tower is non-caked, and the flue-gas temperature entering sack cleaner generally all controls dew-point temperature more than 15 DEG C.And in SINTERING PRODUCTION, in sintering machine shutdown process, sinter fume temperature can be very low, the processes such as recurrent zapping car, benefit skylight also can cause the quick reduction of sinter fume temperature (being low to moderate tens degrees Celsius).In addition, the situations such as the interim control that also may occur in normal sintering production process that posterior segment box temperature controls, sintering end point temperature controls and coordinate central cooler cogeneration and take, these control the remarkable reduction that all may cause sinter fume temperature.Therefore, when sintering cigarette temperature and being low, in order to ensure sack cleaner device security, strictly should control injection flow rate, meet filter bag instructions for use with the inlet temperature ensureing to enter sack cleaner.Under this entrance flue gas temperature operating mode, because the reduction of injection flow rate can not be sprayed water when even cigarette temperature is lower again, desulfurized effect certainly will be had a strong impact on.
The supporting desulphurization system of existing sintering machine is all provided with by-pass damper door substantially.Along with the raising of environmental requirement; the sintering desulfuration system put into operation no longer allows to open by-pass damper door gradually, and following newly-built sintering flue gas desulfurization system also will no longer arrange by-pass damper door, and during to guarantee that sintering machine operates, desulphurization system must operate; when desulphurization system is stopped transport, sintering must be shut down.At present, repeatedly occurred main exhauster of sintering operating personnel and desulfurization operation personnel operationally do not mate and the desulphurization system negative pressure caused sharply rises and jeopardizes the situation of desulphurization system safety.Such as, sintering closes main exhausting door, and desulfurization air-introduced machine load here does not reduce in time, and enter desulphurization system air quantity and reduce, cause booster fan to be crossed and take out, system negative pressure increases.In addition, when making sintering machine need hesitation dozens of minutes when the temporary derangement of sintering system equipment, now main exhauster of sintering does not stop, and just turns down inlet vane, certainly will have containing SO
2flue gas be drawn out of come, at this moment desulphurization system still need run.But because the flue gas flow under now little damper conditions is very low, even if open the minimum operation bed pressure that recirculation baffle door is also difficult to maintain circulating fluid bed semi-drying method flue gas desulfurization system.Therefore, now only have and control situation according to cloth bag inlet temperature, suitably spray water, although meet the run-in synchronism rate with sintering machine, the desulfurized effect of this process cannot ensure.
Utility model content
The deficiency of prior art existence in view of the above, the purpose of this utility model is to provide a kind of circulating fluid bed semi-drying method flue gas desulfurization device, can adapt to the change of sinter fume flow and temperature completely, and significant desulfurization effect, equipment is safe and reliable to operation.
The utility model is achieved through the following technical solutions:
A kind of circulating fluid bed semi-drying method flue gas desulfurization device that the utility model provides, comprise desulfurizing tower, gas-solid separating device, air-introduced machine and chimney, described desulfurizing tower is provided with smoke inlet, exhanst gas outlet and water pistol, described gas-solid separating device is provided with entrance and exit, the entrance of described gas-solid separating device and the exhanst gas outlet UNICOM of desulfurizing tower, the outlet of described gas-solid separating device is connected with air-introduced machine, described air-introduced machine is connected with chimney, it is characterized in that: the smoke inlet of described desulfurizing tower is provided with flue gas heater and mixes the branch road of cold wind, the described branch road mixing cold wind is also provided with cold blast sliding valve.
Further, described desulfurizer also comprises material-returning device, and described material-returning device is provided with ash inlet and ash hole; Described desulfurizing tower is also provided with gray back mouth; Described gas-solid separating device is also provided with ash discharging hole; The ash discharging hole of described gas-solid separating device and the ash inlet UNICOM of material-returning device, the ash hole of described material-returning device and the gray back mouth UNICOM of desulfurizing tower.
Further, described heater is electric heater or steam heater.
The utility model has the advantage of:
1, when sinter fume temperature is low, opening electric heater, improves and carrys out cigarette temperature, to reserve the temperature space increasing injection flow rate, and then improves desulfurized effect.
2, when causing the flue gas flow entering desulfurizing tower to reduce because of sintering process change, the aperture of cold blast sliding valve is regulated, to ensure that desulphurization system can maintain the bed pressure meeting desulfurized effect, and a phenomenon of not collapsing.
When 3, can also avoid plume amount sharply to reduce by the adjustment of cold blast sliding valve, the safety problem that desulfurizer air-introduced machine regulates the desulfurizer that may bring not in time to cause because negative pressure sharply changes.
Therefore; the utility model can adapt to the change of sinter fume flow and temperature completely; no matter sintering machine system start and stop or load change; guaranteeing in the non-caked and normal situation of desulphurization system negative pressure of sack cleaner filter bag; all can realize high bed pressure to run and high-efficiency desulfurization, arrange safe and reliable to operation.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is the utility model schematic diagram;
In figure: 1-desulfurizing tower, 2-gas-solid separating device, 3-air-introduced machine, 4-chimney, 5-material-returning device, 6-heater, 7-cold blast sliding valve, 8-water pistol.
Detailed description of the invention
Below with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail; Should be appreciated that preferred embodiment only in order to the utility model is described, instead of in order to limit protection domain of the present utility model.
Fig. 1 is the utility model schematic diagram, as shown in the figure: a kind of circulating fluid bed semi-drying method flue gas desulfurization device of the present utility model, comprise desulfurizing tower 1, gas-solid separating device 2, air-introduced machine 3 and chimney 4, described desulfurizing tower 1 is provided with smoke inlet, exhanst gas outlet and water pistol 8, described gas-solid separating device 2 is provided with entrance and exit, the entrance of described gas-solid separating device 2 and the exhanst gas outlet UNICOM of desulfurizing tower 1, the outlet of described gas-solid separating device 2 is connected with air-introduced machine 3, described air-introduced machine 3 is connected with chimney 4, it is characterized in that: the smoke inlet of described desulfurizing tower 1 is provided with flue gas heater 6 and mixes the branch road of cold wind, the described branch road mixing cold wind is also provided with cold blast sliding valve 7.
Technological process of the present utility model and operation principle are:
Normal sinter fume enters desulfurizing tower 1 from the inlet flue gas supervisor of desulfurizing tower 1 bottom, come from water pistol 8 spray the effect of water under, with the desulfurizing agent generation desulphurization reaction of desulfurizing tower 1, after flue gas after desulfurization enters gas-solid separating device 2, under the effect causing machine 3, discharged by chimney 4.
Preferably, when sinter fume temperature is low, by heater 6, be delivered in desulfurizing tower 1 after flue-gas temperature is improved, guarantee that desulphurization reaction is stablized, and must carry out in desulphurization system spraying water to make desulfurizing agent and SO
2react, therefore, for making desulfurized effect abundant, therefore while improving flue-gas temperature, also should reserve the temperature space increasing injection flow rate, and then improve desulfurized effect.
Preferably, when causing the flue gas flow entering desulfurizing tower 1 to reduce because of sintering process change, regulating the aperture of cold blast sliding valve 7, increasing air quantity, to ensure that desulphurization system can maintain the bed pressure meeting desulfurized effect, and a phenomenon of not collapsing.Meanwhile, when can also avoid plume amount sharply to reduce by the adjustment of cold blast sliding valve 7, the safety problem that desulfurizer air-introduced machine 3 regulates the desulfurizer that may bring not in time to cause because negative pressure sharply changes.
In the present embodiment, described desulfurizer 1 also comprises material-returning device 5, and described material-returning device 5 is provided with ash inlet and ash hole; Described desulfurizing tower 1 is also provided with gray back mouth; Described gas-solid separating device 2 is also provided with ash discharging hole; The ash discharging hole of described gas-solid separating device 2 and the ash inlet UNICOM of material-returning device 5, the ash hole of described material-returning device 5 and the gray back mouth UNICOM of desulfurizing tower 1.By the unreacted collected from gas-solid separating device 2 completely desulfurizing agent send desulfurizing tower 1 back to through material-returning device 5, continue to participate in desulphurization reaction, improve the utilization rate of desulfurizing agent.
In the present embodiment, described heater is electric heater or steam heater, flue gas is heated up fast, meets the temperature needed for desulphurization reaction, ensure that the variations in temperature in desulfurizing tower 1 is stablized.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (3)
1. a circulating fluid bed semi-drying method flue gas desulfurization device, comprise desulfurizing tower, gas-solid separating device, air-introduced machine and chimney, described desulfurizing tower is provided with smoke inlet, exhanst gas outlet and water pistol, described gas-solid separating device is provided with entrance and exit, the entrance of described gas-solid separating device and the exhanst gas outlet UNICOM of desulfurizing tower, the outlet of described gas-solid separating device is connected with air-introduced machine, described air-introduced machine is connected with chimney, it is characterized in that: the smoke inlet of described desulfurizing tower is provided with flue gas heater and mixes the branch road of cold wind, the described branch road mixing cold wind is also provided with cold blast sliding valve.
2. circulating fluid bed semi-drying method flue gas desulfurization device according to claim 1, it is characterized in that: described desulfurizer also comprises material-returning device, described material-returning device is provided with ash inlet and ash hole; Described desulfurizing tower is also provided with gray back mouth; Described gas-solid separating device is also provided with ash discharging hole; The ash discharging hole of described gas-solid separating device and the ash inlet UNICOM of material-returning device, the ash hole of described material-returning device and the gray back mouth UNICOM of desulfurizing tower.
3. circulating fluid bed semi-drying method flue gas desulfurization device according to claim 1, is characterized in that: described heater is electric heater or steam heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520200854.4U CN204522735U (en) | 2015-04-03 | 2015-04-03 | A kind of circulating fluid bed semi-drying method flue gas desulfurization device |
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| CN201520200854.4U CN204522735U (en) | 2015-04-03 | 2015-04-03 | A kind of circulating fluid bed semi-drying method flue gas desulfurization device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122289A (en) * | 2019-12-30 | 2021-07-16 | 宝山钢铁股份有限公司 | Dry quenching furnace diffused gas pre-conditioning treatment system and method |
| CN115014091A (en) * | 2022-05-26 | 2022-09-06 | 中冶华天南京工程技术有限公司 | Desulfurization and denitrification method for high-sulfur sintering flue gas circulating fluidized bed |
| CN115301065A (en) * | 2022-07-22 | 2022-11-08 | 圣戈班管道系统有限公司 | Method for removing bypass by sintering SDA (Stratagene-sulfate-sodium) semi-dry desulfurization |
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2015
- 2015-04-03 CN CN201520200854.4U patent/CN204522735U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122289A (en) * | 2019-12-30 | 2021-07-16 | 宝山钢铁股份有限公司 | Dry quenching furnace diffused gas pre-conditioning treatment system and method |
| CN113122289B (en) * | 2019-12-30 | 2022-07-22 | 宝山钢铁股份有限公司 | Pre-tempering treatment system and method for dry quenching furnace diffused gas |
| CN115014091A (en) * | 2022-05-26 | 2022-09-06 | 中冶华天南京工程技术有限公司 | Desulfurization and denitrification method for high-sulfur sintering flue gas circulating fluidized bed |
| CN115014091B (en) * | 2022-05-26 | 2023-11-14 | 中冶华天南京工程技术有限公司 | Desulfurization and denitrification method for high-sulfur sintering flue gas circulating fluidized bed |
| CN115301065A (en) * | 2022-07-22 | 2022-11-08 | 圣戈班管道系统有限公司 | Method for removing bypass by sintering SDA (Stratagene-sulfate-sodium) semi-dry desulfurization |
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