CN208124676U - A kind of processing unit of wet desulfurization flue gas - Google Patents
A kind of processing unit of wet desulfurization flue gas Download PDFInfo
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- CN208124676U CN208124676U CN201820597816.0U CN201820597816U CN208124676U CN 208124676 U CN208124676 U CN 208124676U CN 201820597816 U CN201820597816 U CN 201820597816U CN 208124676 U CN208124676 U CN 208124676U
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- heat
- heat exchanger
- flue gas
- processing unit
- wet desulfurization
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model relates to a kind of processing units of wet desulfurization flue gas, it is made of desulfurizing tower, heat absorbing heat exchanger, heat release heat exchanger, chimney, flue, steam turbine, low plus heat exchanger, chilled water line and heat medium water pipeline, heat absorbing heat exchanger reduces water capacity and pollutant for flue gas cool-down condensation, heat release heat exchanger eliminates the white plume and gypsum rain that are formed after chimney discharge for flue gas, add absorption heat pump, cold source and heat source needed for providing flue gas condensing and heating with absorption heat pump, while the heat source of heating steam turbine condensed water is provided to low plus heat exchanger.The utility model has the advantages that：1）Reduce the pollutant in flue gas；2）Heating flue gas and condensed water are removed using the condenser heat that flue gas discharges when cooling, waste heat is taken full advantage of, improves energy use efficiency.
Description
Technical field
The utility model relates to a kind of processing units of wet desulfurization flue gas, are mainly used for thermal power plant to after wet desulphurization
The treatment process of coal-fired flue-gas.
Background technique
In power industry, the coal-fired flue-gas of boiler emission largely passes through the treatment process of wet desulfurizing process.Through wet process
Flue gas after desulfurization process, not only temperature is lower（About 50 DEG C）, and water capacity is high（Vapor is in a saturated state）, also carry
A large amount of fine particle（PM2.5 and smaller particle）, it is discharged into after atmosphere and easily forms high humidity environment in some areas, makes these thin
Grain object is converted to " haze ".So wet-method desulfurized fume improvement has been classified as improvement atmospheric environment by government, improvement haze is primarily appointed
Business.
The main technological route handled at present flue gas after desulfurization is the fume treatment side using " condensation+reheating "
Method." condensation " is cooled flue gas, condenses vapor therein, reduces water capacity in flue gas and also reduces pollutant simultaneously
（Fine particle）Concentration；" reheating " is to reheat flue gas after " condensation " processing, and flue gas is made to become insatiable hunger by steam-laden state
And state, white plume and gypsum rain phenomenon can be eliminated after being discharged into atmosphere into chimney, be also beneficial to the expansion of pollutant in flue gas
It dissipates.There are mainly two types of the condensation methods of flue gas, and one is indirect coolings, i.e., flue gas cooling device is arranged in flue（Heat absorption is changed
Hot device）；Another kind is direct cooling, arranges slurries cooling device outside the desulfurizing tower on spray piping（Heat absorbing heat exchanger）, first
Slurries are cooling, the process cooling flue gas for passing through desulfurizing tower again is sprayed in tower using slurries, reduces flue-gas temperature and containing wet
Amount reduces.Cooling and condensation process needs cold source, usually provides cold source by the cooling equipment such as cooling tower.The reheating process of flue gas
Heat source is needed, is provided by equipment such as low-level (stack-gas) economizers, even it is also required to provide steam as auxiliary thermal source sometimes.
The cold source and heat source of the prior art have the following disadvantages：1）Condensation heat in flue gas is not fully used, and 2）
The thermal energy that flue gas reheat needs low-level (stack-gas) economizer to provide, even additional auxiliary thermal energy, for example use heating steam heating etc.,
Energy consumption is big, and 3）There is provided cold source cooling tower there may be（Water mist and waste water etc.）Secondary pollution discharge.
Utility model content
The purpose of this utility model is that avoiding fume afterheat in above-mentioned technical proposal that from cannot making full use of, reheat energy consumption
Big deficiency provides and can make full use of waste heat, more energy-efficient flue gas after desulfurization processing unit.
What the purpose of this utility model was realized in：A kind of processing unit of wet desulfurization flue gas, by desulfurizing tower, heat absorption
Heat exchanger, heat release heat exchanger, chimney, flue, steam turbine, low plus heat exchanger, chilled water line, heat medium water pipeline composition, are added
Absorption heat pump connect absorption heat pump evaporator with heat absorbing heat exchanger through chilled water line, makes absorption heat pump condenser
It is connect through heating agent waterpipe with heat release heat exchanger and low plus heat exchanger.
A kind of processing unit of wet desulfurization flue gas, the heat release heat exchanger and low plus heat exchanger are set as in parallel, i.e.,：
The outlet of condenser is connect through heating agent waterpipe with heat release heat exchanger and low plus heat exchanger import, and the import of condenser is through heat medium water
Pipeline and heat release heat exchanger and low plus heat exchanger exit are connected or the heat release heat exchanger and low heat exchanger are added to be set as going here and there
Connection, i.e.,：Condensator outlet is connected with heat release heat exchanger import, and heat release heat exchanger outlet is connect with low plus heat exchanger import, low to add
Heat exchanger exit is connect with condenser inlet.
A kind of processing unit of wet desulfurization flue gas, the heat absorbing heat exchanger are arranged in flue, in desulfurizing tower and heat absorption
Between heat exchanger；Or it is arranged outside desulfurizing tower on spray piping, after slurries pump.
Compared with prior art, have after a kind of processing unit of wet desulfurization flue gas of the utility model is implemented beneficial below
Effect：
1）By adding absorption heat pump, the cooling waste heat with condensation process of flue gas is absorbed, is used after low temperature exhaust heat is heated up
In reheating flue gas and steam turbine condensed water, thermal energy is set to be fully used, energy-saving effect is good.
2）Cold source is provided using evaporator with heat pump, does not use cooling tower, avoids the emission problem for generating secondary pollution, more
Add environmental protection.
Detailed description of the invention
Fig. 1 is a kind of 1 schematic diagram of processing device embodiment of wet desulfurization flue gas of the utility model.
Fig. 2 is a kind of 2 schematic diagram of processing device embodiment of wet desulfurization flue gas of the utility model.
Fig. 3 is a kind of 3 schematic diagram of processing device embodiment of wet desulfurization flue gas of the utility model
Wherein：
Desulfurizing tower 1, spray piping 1-1, slurries pump 1-2, tower body 1-3, heat absorbing heat exchanger 2, flue 3, heat release heat exchanger 4,
Chimney 5, steam turbine 6, heating agent waterpipe 7, condensing water conduit 8, absorption heat pump 9, evaporator 9-1, condenser 9-2, chilled water
Pipeline 10, low plus heat exchanger 11.
Specific embodiment
Embodiment 1：
Referring to Fig. 1, a kind of processing unit of wet desulfurization flue gas, by desulfurizing tower 1, heat absorbing heat exchanger 2, heat release heat exchanger 4,
Chimney 5, flue 3, steam turbine 6, low plus heat exchanger 11 and chilled water line 10 and heating agent waterpipe 7 composition, are added absorption
Heat pump 9 connect the evaporator 9-1 of absorption heat pump 9 with heat absorbing heat exchanger 2 through chilled water line 10, makes absorption heat pump 9
Condenser 9-2 is connect through heating agent waterpipe 7 with heat release heat exchanger 4 and low plus heat exchanger 11.
Flue 3 connects desulfurizing tower 1, heat release heat exchanger 4 and chimney 5, forms smoke flow channels, 4 cloth of heat absorbing heat exchanger
It sets on flue 3, after desulfurizing tower 1, before heat release heat exchanger 4.
In terms of heating agent Water flow-path, heat release heat exchanger 4 and low plus heat exchanger 11 are arranged in parallel, i.e.,：Condenser 9-2's goes out
Mouth is connect through heating agent waterpipe 7 with heat release heat exchanger 4 and low plus heat exchanger 11 import, and condenser 9-2 import is through heating agent water pipe
Road 7 is connected with heat release heat exchanger 4 and low plus heat exchanger 11 outlet；From condenser 9-2 send out and return heat medium water simultaneously into
Heat release heat exchanger 4 and low plus heat exchanger 11 out.
After the processing of desulfurizing tower 1, flue gas institute containing water vapor is in a saturated state, is introduced into the shell side of heat absorbing heat exchanger 2, with
Temperature reduces after chilled water in tube side carries out heat exchange, while condensed water is precipitated in the Water vapor condensation in flue gas, discharges smoke
Gas latent heat and sensible heat, water content and pollutant concentration in flue gas are reduced with condensation process；Then, flue gas enters back into heat release
Heat exchanger 4 exchanges heat with the heat medium water in tube side, and since heating agent coolant-temperature gage is high, flue-gas temperature is increased, and becomes undersaturated condition
It is admitted to chimney 5, final discharge system enters atmosphere.Flue-gas temperature increase after in it is unsaturated when, can avoid white plume and
The generation of gypsum rain phenomenon.
Absorption heat pump 9 fetches the flue gas heat in 2 chilled water of self-priming heat exchanger in evaporator 9-1 interior suction（Latent heat and
Sensible heat）, the thermal energy that this low temperature heat energy becomes higher temperature is transported to condenser 9-2, heating heat medium water increases its temperature；
The high heat medium water of temperature enters heat release heat exchanger 4 through 7 part of heating agent waterpipe and heats flue gas, partially enters low plus heat exchanger 11 and adds
Condensed water of the heat from steam turbine, heat medium water sends absorption back to again after temperature reduces in heat release heat exchanger 4 and low plus heat exchanger 11
Formula heat pump 9.
The purpose of this utility model is the function using absorption heat pump 9, absorbs thermal energy in flue gas cooling and condensation process
Heating wet desulfurization flue gas and steam turbine condensed water are removed, heat does not have discharge system, and all energy, which do not lose, all to be obtained
Effective use.
Embodiment 2：
Fig. 2 is the schematic diagram of the utility model embodiment 2.Referring to fig. 2, a kind of processing unit of wet desulfurization flue gas, by
Desulfurizing tower 1, heat absorbing heat exchanger 2, heat release heat exchanger 4, chimney 5, steam turbine 6, low plus heat exchanger 11, chilled water line 10 and heating agent
Waterpipe 7 forms, and desulfurizing tower 1, heat absorbing heat exchanger 2, heat release heat exchanger 4 and chimney 5 are successively connected by flue 3, added absorption
Heat pump 9 connect the evaporator 9-1 of absorption heat pump 9 with heat absorbing heat exchanger 2 through chilled water line 10, absorption heat pump 9 it is cold
Condenser 9-2 is connect through heating agent waterpipe 7 with heat release heat exchanger 4 and low plus heat exchanger 11.
Unlike the first embodiment, heat release heat exchanger 4 and low plus heat exchanger 11 are arranged to connect embodiment 2, i.e.,：Through
Heating agent waterpipe, make 9 condenser 9-2 of absorption heat pump outlet be connected with 4 import of heat release heat exchanger, heat release heat exchanger 4 export and
Low plus 11 import of heat exchanger connection, the outlet of low plus heat exchanger 11 are connect with condenser 9-2 import.
The heat medium water of high temperature is introduced into heat release heat exchanger 4 after going out condenser 9-2, then enters back into low plus heat exchanger 11, most
Return to condenser 9-2 again afterwards.
Above-mentioned heat medium water is introduced into heat release heat exchanger 4 and enters back into low plus heat exchanger 11 series system, is suitable for desulfurization
Flue-gas temperature afterwards is higher than the case where from the condensing water temperature of steam turbine 6；If flue-gas temperature is lower, can also be arranged to another
Outer series system makes heat medium water be introduced into low plus heat exchanger 11, then into exothermic heat heat exchanger 4.
Other technical characteristics of embodiment 2 are same as Example 1.
Embodiment 3：
Fig. 3 is the schematic diagram of the utility model embodiment 3.Referring to Fig. 3, a kind of processing unit of wet desulfurization flue gas, by
Desulfurizing tower 1, heat absorbing heat exchanger 2, heat release heat exchanger 4, chimney 5, steam turbine 6, low plus heat exchanger 11, chilled water line 10 and heating agent
Waterpipe 7 forms, and flue 3 links together desulfurizing tower 1, heat release heat exchanger 4 and chimney 5, adds absorption heat pump 9, make to inhale
The evaporator 9-1 of receipts formula heat pump 9 is connect through chilled water line 10 with heat absorbing heat exchanger 2, makes the condenser 9-2 of absorption heat pump 9
It is connect through heating agent waterpipe 7 with heat release heat exchanger 4 and low plus heat exchanger 11.
Desulfurizing tower 1 includes slurries pump 1-2, spray piping 1-1 and tower body 1-3；Heat absorbing heat exchanger 2 be arranged in tower body 1-3 it is outer,
On spray piping 1-1 after slurries pump 1-2, it is used for cooling desulfurization slurry.
Heat release heat exchanger 4 and low plus heat exchanger 11 are set as in parallel.
Unlike the first embodiment, the position that heat absorbing heat exchanger 2 is arranged is different with cooled material.In embodiment 3
In, heat absorbing heat exchanger 2 is arranged in outside tower body 1-3, on the spray piping 1-1 behind the outlet slurries pump 1-2, for cooling down desulfurizing tower
1 slurries.Enter in tower body 1-3 under slurries pump 1-2 driving through the low temperature slurries after cooling of heat absorbing heat exchanger 2 and spray, with tower
The flue gas flowed in body 1-3 directly carries out heat exchange, reduces flue-gas temperature, water capacity reduces.Spray the slurry in tower body 1-3
Temperature increases after liquid and flue gas heat exchange, is sent out by slurries pump 1-2 to falling to behind the bottom tower body 1-3, exchanges heat again into heat absorption
It cools in device 2.
Other technical characteristics are same as Example 1.
Claims (7)
1. a kind of processing unit of wet desulfurization flue gas, by desulfurizing tower（1）, heat absorbing heat exchanger（2）, heat release heat exchanger（4）, chimney
（5）, flue（3）, steam turbine（6）, low plus heat exchanger（11）, chilled water line（10）With heating agent waterpipe（7）Composition, feature
It is：Add absorption heat pump（9）, make absorption heat pump（9）Evaporator（9-1）Through chilled water line（10）It exchanges heat with heat absorption
Device（2）Connection, makes absorption heat pump（9）Condenser（9-2）Through heating agent waterpipe（7）With heat release heat exchanger（4）With it is low plus change
Hot device（11）Connection.
2. a kind of processing unit of wet desulfurization flue gas according to claim 1, it is characterised in that：The heat absorption heat exchange
Device（2）It is disposed in desulfurizing tower（1）With heat release heat exchanger（4）Between flue（3）On.
3. a kind of processing unit of wet desulfurization flue gas according to claim 1, it is characterised in that：The desulfurizing tower
（1）Including spray piping（1-1）, slurries pump（1-2）And tower body（1-3）, the heat absorbing heat exchanger（2）It is disposed in tower body
（1-3）External, slurries pump（1-2）Spray piping afterwards（1-1）On.
4. a kind of processing unit of wet desulfurization flue gas described in one of -3 according to claim 1, it is characterised in that：Described puts
Heat exchanger（4）With low plus heat exchanger（11）It is set as in parallel.
5. a kind of processing unit of wet desulfurization flue gas according to claim 4, it is characterised in that：The condenser（9-
2）Outlet through heating agent waterpipe（7）With heat release heat exchanger（4）With low plus heat exchanger（11）Import connection, condenser（9-2）'s
Import is through heating agent waterpipe（7）With heat release heat exchanger（4）With low plus heat exchanger（11）Outlet is connected.
6. a kind of processing unit of wet desulfurization flue gas described in one of -3 according to claim 1, it is characterised in that：Described puts
Heat exchanger（4）With low plus heat exchanger（11）It is set as connecting.
7. a kind of processing unit of wet desulfurization flue gas according to claim 6, it is characterised in that：The condenser（9-
2）Outlet and heat release heat exchanger（4）Import is connected, heat release heat exchanger（4）Outlet and low plus heat exchanger（11）Import connection, it is low to add
Heat exchanger（11）Outlet and condenser（9-2）Import connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820597816.0U CN208124676U (en) | 2018-04-25 | 2018-04-25 | A kind of processing unit of wet desulfurization flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820597816.0U CN208124676U (en) | 2018-04-25 | 2018-04-25 | A kind of processing unit of wet desulfurization flue gas |
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| Publication Number | Publication Date |
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| CN208124676U true CN208124676U (en) | 2018-11-20 |
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| CN201820597816.0U Active CN208124676U (en) | 2018-04-25 | 2018-04-25 | A kind of processing unit of wet desulfurization flue gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413654A (en) * | 2018-04-25 | 2018-08-17 | 双良节能系统股份有限公司 | A kind of processing unit of wet desulfurization flue gas |
| CN114768481A (en) * | 2021-12-29 | 2022-07-22 | 中石化宁波工程有限公司 | Wet flue gas and rain eliminating technology for catalytic cracking flue gas waste heat utilization coupling desulfurization |
-
2018
- 2018-04-25 CN CN201820597816.0U patent/CN208124676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413654A (en) * | 2018-04-25 | 2018-08-17 | 双良节能系统股份有限公司 | A kind of processing unit of wet desulfurization flue gas |
| CN114768481A (en) * | 2021-12-29 | 2022-07-22 | 中石化宁波工程有限公司 | Wet flue gas and rain eliminating technology for catalytic cracking flue gas waste heat utilization coupling desulfurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200608 Address after: 214444 No.9 Shuangliang Road, Ligang street, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: Jiangsu Shuangliang Cooling System Co., Ltd Address before: 214444 Li Gang Xili Road, Lingang New Town, Jiangyin, Wuxi, Jiangsu, 88 Patentee before: SHUANGLIANG ECO-ENERGY SYSTEMS Co.,Ltd. |
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| TR01 | Transfer of patent right |