CN203458958U - Flue gas treatment system - Google Patents

Flue gas treatment system Download PDF

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Publication number
CN203458958U
CN203458958U CN201320403839.0U CN201320403839U CN203458958U CN 203458958 U CN203458958 U CN 203458958U CN 201320403839 U CN201320403839 U CN 201320403839U CN 203458958 U CN203458958 U CN 203458958U
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Prior art keywords
flue gas
water
pipeline
processing system
desulfurization tower
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Expired - Fee Related
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CN201320403839.0U
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Chinese (zh)
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黄晶晶
龙辉
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China Power Engineering Consulting Group Corp
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Abstract

The utility model provides a flue gas treatment system. The flue gas treatment system comprises a wet process flue gas desulfurization tower and a flue gas membrane process water recovery device, wherein the wet process flue gas desulfurization tower is used for carrying out wet process flue gas desulfurization on flue gas, a smoke inlet of the wet process flue gas desulfurization tower is communicated with a flue of a boiler through a first pipeline, the flue gas membrane process water recovery device is used for recovering water in flue gas discharged by the wet process flue gas desulfurization tower, and a gas inlet of the flue gas membrane process water recovery device is communicated with a smoke outlet of the wet process flue gas desulfurization tower through a pipeline. The flue gas treatment system has the advantages that the flue gas membrane process water recovery device is used for recovering the water in the flue gas discharged by the wet process flue gas desulfurization tower and is applied in a wet process flue gas desulfurization technology, namely, the water in the flue gas discharged by the wet process flue gas desulfurization tower is recycled, so that the content of water vapor in the discharged flue gas and white smoke can be reduced on one hand, and the water consumption of thermal power plants can be reduced on the other hand, and thus the double-win condition of water conservation and environmental protection is realized.

Description

Smoke processing system
Technical field
The utility model relates to flue gas water and reclaims and regeneration field, particularly relates to a kind of smoke processing system that utilizes embrane method to carry out the recovery of flue gas water.
Background technology
Thermal power generation is as topmost forms of electricity generation, in future, within 20 years, will occupy 60%~70% of China Power supply.Meanwhile, the energy " 12 " planning point out to want emphasis in Shanxi, the coal resource enrichment area such as the Inner Mongol, Shaanxi, Ningxia, Xinjiang, build the electric base of large-scale near coal-mine coal.But on the other hand, the northern area of China water resource is generally deficient, and the gross amount of water resources in Shanxi, the Inner Mongol and Shanxi only accounts for respectively 0.4%, 1.6% and 1.7% of national gross amount of water resources, and the gross amount of water resources in Xinjiang also only accounts for 3.1% of the whole nation.In addition, northern most areas water resources development and utilization degree is quite high, develops potentiality very limited.Northern area water resource lacks the key factor that has become the restriction sustainable development of socio-economy.Therefore, develop water-saving technology, carry out water saving measures, the water consumption of reduction unit generated energy is Large scale construction electric power stations near coal-mines and ensures the efficient necessary condition of moving of thermal power plant.
The main water consumption project of thermal power plant comprises the aspects such as open cycle cooling water, enclosed auxiliary machine circulating cooling water, process water and domestic water.For water shortage in north china area, can adopt air cooling technique significantly to reduce the water loss of thermal power generation unit, the cycling and reutilization by recirculated cooling water, process water, sanitary sewage also can greatly reduce the water consumption of coal-fired unit in addition.Taking on the basis of above water-saving technology or measure, the water yield of fired power generating unit runs off and is mainly reflected in lime stone-gypsum wet flue gas desulfurizing system, flue gas carries away a large amount of water vapours, and this part water vapour amount accounts for the more than 80% of wet desulfurization system water.But because existing flue gas treating process cannot reclaim the water vapour in flue gas, cause after wet process of FGD in flue gas vapour content very high, water resource is wasted in a large number on the one hand, causes on the other hand the internal corrosion of chimney and the discharge of white vaporific flue gas.
Utility model content
The purpose of this utility model is to provide and can reduces the smoke processing system of discharging vapour content, the recovery in flue gas and recycling water vapour.
Smoke processing system of the present utility model, comprising:
For flue gas being carried out to the wet flue gas desulfurization tower of wet process of FGD, the mouth that enters of described wet flue gas desulfurization tower is communicated with the flue of boiler by the first pipeline;
The flue gas embrane method apparatus for recovering that carries out water recycling for the flue gas that described wet flue gas desulfurization tower is discharged, the air inlet of described flue gas embrane method apparatus for recovering and the outlet flue of described wet flue gas desulfurization tower pass through pipeline communication.
Smoke processing system of the present utility model, wherein, described flue gas embrane method apparatus for recovering comprises smoke chamber and the water storage room of being separated by permeable membrane, described air inlet is communicated with described smoke chamber, described smoke chamber is provided with for discharging the gas outlet of flue gas, contain water in described water storage room, so that the steam in the flue gas of described smoke chamber infiltrates through described water storage room by described permeable membrane.
Smoke processing system of the present utility model, wherein, described water storage room is provided with water inlet and delivery port, and described delivery port is communicated with the shower of wet flue gas desulfurization tower by second pipe, is provided with for add the material mixing device of lime stone to second pipe on described second pipe.
Smoke processing system of the present utility model, wherein, described gas outlet is communicated with chimney by the 3rd pipeline, between described the 3rd pipeline and described the first pipeline, is provided with heat-exchange device.
Smoke processing system of the present utility model, wherein, the import of heat-exchange device and the outlet of described heat-exchange device described in described the 3rd pipeline communication, heat medium import and the heat medium outlet of heat-exchange device described in described the first pipeline communication.
Smoke processing system of the present utility model, wherein, is provided with deduster between the flue of described first the above boiler of pipeline and described heat-exchange device.
Smoke processing system of the present utility model, wherein, is provided with air preheater between the flue of described first the above boiler of pipeline and described deduster.
Smoke processing system of the present utility model, wherein, is provided with flue gas desulfur device between the flue of described first the above boiler of pipeline and described air preheater.
The flue gas that smoke processing system of the present utility model utilizes flue gas embrane method apparatus for recovering to discharge wet flue gas desulfurization tower carries out water recycling, water in the flue gas that soon wet flue gas desulfurization tower will be discharged is recycled, can reduce on the one hand the vapour content of discharging in flue gas, reduce white cigarette, thermal power plant water consumption be can reduce on the other hand, water saving and environmental protection doulbe-sides' victory realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment mono-of smoke processing system of the present utility model;
Fig. 2 is the structural representation of the embodiment bis-of smoke processing system of the present utility model.
The specific embodiment
Smoke processing system of the present utility model is specially adapted to the flue gas in thermal power plant and processes.For making the technical solution of the utility model clearer, below in conjunction with accompanying drawing, concrete enforcement is described in detail.
Embodiment mono-
As shown in Figure 1, the smoke processing system of the present embodiment, comprising:
For flue gas being carried out to the wet flue gas desulfurization tower 1 of wet process of FGD, the mouth 11 that enters of wet flue gas desulfurization tower 1 is communicated with the flue 3 of boiler 2 by the first pipeline 81;
The flue gas embrane method apparatus for recovering 5 that carries out water recycling for the flue gas that wet flue gas desulfurization tower 1 is discharged, the air inlet 51 of flue gas embrane method apparatus for recovering 5 passes through pipeline communication with the outlet flue 12 of wet flue gas desulfurization tower 1.
The flue gas that smoke processing system of the present utility model utilizes 5 pairs of wet flue gas desulfurization towers of flue gas embrane method apparatus for recovering 1 to discharge carries out water recycling, water in the flue gas that soon wet flue gas desulfurization tower 1 will be discharged is recycled, can reduce on the one hand the vapour content of discharging in flue gas, reduce white cigarette, thermal power plant water consumption be can reduce on the other hand, water saving and environmental protection doulbe-sides' victory realized.
The smoke processing system of the present embodiment, wherein, flue gas embrane method apparatus for recovering 5 comprises smoke chamber 54 and the water storage room 55 of being separated by permeable membrane 53.Air inlet 51 is arranged at smoke chamber 54, be that air inlet 51 is communicated with smoke chamber 54, smoke chamber 54 is also provided with for discharging the interior contain water of gas outlet 56, water storage room 55 of flue gas, so that the steam in the flue gas of smoke chamber 54 infiltrates through water storage room 55 by permeable membrane 53.
The smoke processing system of the present embodiment, wherein, water storage room 55 is provided with water inlet 58 and delivery port 59.The process water pipeline connection in water inlet 58 and thermal power plant.Delivery port 59 is communicated with the shower 13 of wet flue gas desulfurization tower 1 by second pipe 82, is provided with for add the material mixing device 4 of lime stone to second pipe 82 on second pipe 82.
When the smoke processing system of the present embodiment is worked, thermal power plant process water enters the water storage room 55 of flue gas embrane method apparatus for recovering 5 by water inlet 58, water temperature is approximately 25~27 ℃, on the other hand, the flue gas that the outlet flue 12 of wet flue gas desulfurization tower 1 is discharged enters smoke chamber 54, in smoke chamber 54, the steam in flue gas infiltrates through water storage room 55 by permeable membrane 53.Permeable membrane 53 can adopt the porous ceramic film of nanostructured organic film alive.The water temperature of the delivery port 59 of flue gas embrane method apparatus for recovering 5 is about 28~38 ℃, and the recycle-water water quality and the process water water quality difference that from flue gas embrane method apparatus for recovering, obtain are less, and water temperature and the water yield all meet wet fuel gas desulfurizing technology requirement.
The smoke processing system of the present embodiment comprises wet method fume desulfurizing system, formed the coupling of flue gas water recovery with regeneration, both realized recovery and the recycling of water vapour in flue gas, reduced again the water consumption of coal-fired unit, simultaneously further purifying smoke, has reduced the corrosion effect of flue gas in temperature-fall period.
The smoke processing system of the present embodiment, wherein, gas outlet 56 is communicated with chimney 9 by the 3rd pipeline 83, between the 3rd pipeline 83 and the first pipeline 81, is provided with heat-exchange device 8.
The smoke processing system of the present embodiment, wherein, the 3rd pipeline 83 is communicated with the import of heat-exchange device 8 and the outlet of heat-exchange device 8, and the first pipeline 81 is communicated with heat medium import and the heat medium outlet of heat-exchange device 8.
The smoke processing system of the present embodiment, wherein, the temperature of the flue gas that the outlet flue 12 of wet flue gas desulfurization tower 1 is discharged is about 50 ℃, flue gas is after flue gas embrane method apparatus for recovering 5, the flue-gas temperature of the gas outlet 56 of flue gas embrane method apparatus for recovering 5 is about 40 ℃, and this part flue gas passes through after the flue gas heat exchange of the first pipeline 81, the flue-gas temperature that enters chimney 9 can be increased to 80 ℃.
The smoke processing system of the present embodiment, is provided with between the flue 3 of boiler 2 and heat-exchange device 8 on the first pipeline 81 for the interior flue gas of the first pipeline 81 being carried out to the deduster 7 of dust removal process.
The smoke processing system of the present embodiment, is provided with the air preheater 6 for the interior flue gas of the first pipeline 81 is carried out to preheating between the flue 3 of boiler 2 and deduster 7 on the first pipeline 81.
The smoke processing system of the present embodiment, is provided with the flue gas desulfur device 10 for the interior flue gas of the first pipeline 81 is carried out to desulfurization between the flue 3 of boiler 2 and air preheater 6 on the first pipeline 81.
Embodiment bis-
As shown in Figure 2, the smoke processing system of the present embodiment is only than the difference of embodiment mono-: the different heat-exchange devices 8 of the first pipeline 81 connect, gas outlet 56 is directly communicated with chimney 9 by the 3rd pipeline 83, design makes smoke processing system overall structure fairly simple like this, installs, safeguards all more convenient.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (8)

1. a smoke processing system, is characterized in that, comprising:
For flue gas being carried out to the wet flue gas desulfurization tower of wet process of FGD, the mouth that enters of described wet flue gas desulfurization tower is communicated with the flue of boiler by the first pipeline;
The flue gas embrane method apparatus for recovering that carries out water recycling for the flue gas that described wet flue gas desulfurization tower is discharged, the air inlet of described flue gas embrane method apparatus for recovering and the outlet flue of described wet flue gas desulfurization tower pass through pipeline communication.
2. smoke processing system according to claim 1, it is characterized in that, described flue gas embrane method apparatus for recovering comprises smoke chamber and the water storage room of being separated by permeable membrane, described air inlet is communicated with described smoke chamber, described smoke chamber is provided with for discharging the gas outlet of flue gas, contain water in described water storage room, so that the steam in the flue gas of described smoke chamber infiltrates through described water storage room by described permeable membrane.
3. smoke processing system according to claim 2, it is characterized in that, described water storage room is provided with water inlet and delivery port, described delivery port is communicated with the shower of wet flue gas desulfurization tower by second pipe, is provided with for add the material mixing device of lime stone to second pipe on described second pipe.
4. smoke processing system according to claim 3, is characterized in that, described gas outlet is communicated with chimney by the 3rd pipeline, between described the 3rd pipeline and described the first pipeline, is provided with heat-exchange device.
5. smoke processing system according to claim 4, it is characterized in that, the import of heat-exchange device and the outlet of described heat-exchange device described in described the 3rd pipeline communication, the heat medium import of heat-exchange device and heat medium outlet described in described the first pipeline communication.
6. smoke processing system according to claim 5, is characterized in that, between the flue of described first the above boiler of pipeline and described heat-exchange device, is provided with deduster.
7. smoke processing system according to claim 6, is characterized in that, between the flue of described first the above boiler of pipeline and described deduster, is provided with air preheater.
8. smoke processing system according to claim 7, is characterized in that, between the flue of described first the above boiler of pipeline and described air preheater, is provided with flue gas desulfur device.
CN201320403839.0U 2013-07-08 2013-07-08 Flue gas treatment system Expired - Fee Related CN203458958U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105268301A (en) * 2015-05-15 2016-01-27 李正福 Wet method desulfurizing white smoke trailing treatment device and method
CN108351098A (en) * 2015-11-05 2018-07-31 株式会社东芝 Vapor recovery method in vapor recovery system, thermal power generation system and power generation exhaust gas in power generation exhaust gas
CN111821802A (en) * 2019-04-23 2020-10-27 青岛达能环保设备股份有限公司 Wet desulphurization white plume and wastewater reduction cooperative treatment system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105268301A (en) * 2015-05-15 2016-01-27 李正福 Wet method desulfurizing white smoke trailing treatment device and method
CN108351098A (en) * 2015-11-05 2018-07-31 株式会社东芝 Vapor recovery method in vapor recovery system, thermal power generation system and power generation exhaust gas in power generation exhaust gas
CN111821802A (en) * 2019-04-23 2020-10-27 青岛达能环保设备股份有限公司 Wet desulphurization white plume and wastewater reduction cooperative treatment system

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Owner name: CHINA POWER ENGINEERING CONSULTING GROUP CO., LTD.

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Address after: 100120 Beijing city Xicheng District No. 65 Andrew

Patentee after: CHINA POWER ENGINEERING CONSULTING (GROUP) CORPORATION

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140305

Termination date: 20200708