CN208260465U - A kind of system for administering desulfurization fume white plume - Google Patents
A kind of system for administering desulfurization fume white plume Download PDFInfo
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- CN208260465U CN208260465U CN201721660494.1U CN201721660494U CN208260465U CN 208260465 U CN208260465 U CN 208260465U CN 201721660494 U CN201721660494 U CN 201721660494U CN 208260465 U CN208260465 U CN 208260465U
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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 provides a kind of system for administering desulfurization fume white plume, the characteristics of the utility model is using a large amount of sensible heats and latent heat is discharged in high temperature saturation neat stress cooling condensation, low temperature exhaust heat recycling is realized using compression heat pump, Lowlevel thermal energy is upgraded to high level heat by refrigerant circulation, low temperature saturation neat stress re-heat is become into high temperature unsaturation neat stress again, a large amount of condensed waters are extracted from desulfurization fume, promote flue dust, the secondary removing of the multiple pollutants such as sulfur dioxide, low temperature exhaust heat is recycled using heat pump techniques, it eliminates " white plume ", improve flue gas emission visual effect, it realizes water-saving, energy conservation and " white plume " administer triple targets.
Description
Technical field
The utility model belongs to environment protection field, and in particular to a kind of to administer desulfurization fume by cooling condensation re-heat simultaneously
Device.
Background technique
Wet desulfurizing process is with its desulfuration efficiency height, and operating cost is low, technology maturation, runs the advantages such as easy to operate in cigarette
Desulfurization purified treatment field occupies absolute leading position.Flue gas desulfurization field of purification accounts for about 95% or more at home, in flue gas
Minimum discharge administers field wet desulfurizing process and accounts for 99% or more.
Wet desulfurization system exiting flue gas is saturation or hypersaturated state, and flue-gas temperature is 50~55 DEG C, wherein vapor
Account for 12~18%.Wet desulfurization system is to use water rich and influential family in power plant, and million generator set desulfurization evaporated waters are about 100t/h.High temperature
It is saturated neat stress and carries a large amount of vapor and drop, consume a large amount of moisturizings, wet desulphurization water resources consumption amount is excessive to ask
Topic increasingly shows.
While neat stress carries a large amount of water vapours and drop, a large amount of latent heat are also carried.For 1 600MW unit,
Wet desulfurization system exit gas temperature is reduced by 10 DEG C, per hour heat-recoverable 200GJ or more, recycles condensate liquid 90t.?
While off-gas recovery moisture, recycling low temperature exhaust heat has a high potential.Furthermore with the condensation of moisture in flue gas, absorption tower outlet is net
Fine dust particle, heavy metal in flue gas etc. are also captured, and are that fossil-fired unit realizes being effectively ensured for zero-emission.
Currently, with the upgrading of environmental protection standard and environmental requirement, " big white cigarette ", " chimney rain " etc. after Conventional pollution removing
Visual pollution problem is also gradually taken seriously.Shanghai City promulgation " Emission standards of air pollutants for coal-fired " (DB31/ in 2016
963-2016), wherein 4.2 require that " coal-fired electric generation furnace should be eliminated gypsum rain using fibre selection and other effective measures, be had
Phenomena such as color plume ".
In order to eliminate the visual pollutions problems such as " big white cigarette ", " chimney rain ", generally use fume-dehydrating, flue gas,
The technologies such as MGGH.Conventional heating means (the direct hybrid heating of hot wind flue gas or MGGH) are only capable of eliminating the vision of white plume
Impression, can not recycle moisture, not can be reduced the discharge of pollutant and steam, a variety of dirts such as PM2.5, Hg, SO3 entrained by flue gas
Dye object is not effectively eliminated, and can still be adversely affected to atmospheric environment.Wet desulfurization system generally uses MGGH technique
The hot septate heat transfer re-heat neat stress of recycling high temperature original fume high-temperature or high temperature air mixing neat stress directly heat technique.
The high warm re-heat neat stress technique of MGGH recycling is to utilize at present using more desulfurization neat stress re-heat technology
The high warm of high temperature original flue gas cool-down recycling becomes insatiable hunger after neat stress heating for heating rear end saturation neat stress before desulphurization system
Pass through smoke stack emission with flue gas.But MGGH technique has the following problems: a, need to remove low low-level (stack-gas) economizer, reduce the heat of boiler
Utilization efficiency；B, MGGH system material need to be changed using the solderable fluoroplastics for meeting heatproof, corrosion-resistant condition in former flue gas environment
The thermal efficiency is low, and heat exchange area is big, and investment cost is high；
The high temperature air source of the direct Hybrid Heating technique of high temperature air generally has two kinds, and one kind is extracted from air preheater
~150 DEG C of hot-airs, certainly will influence the balance of the therrmodynamic system of boiler, adversely affect to the efficiency of heating- utilization of boiler；
One kind heating air from external heat source, either uses electric heating or hot-blast stove, certainly will all increase significantly system energy consumption,
Economy is bad.Therefore the direct Hybrid Heating technique application Practical Project of high temperature air is less.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides one kind, the specific technical proposal is:
It is a kind of administer desulfurization fume white plume system, be connected to wet desulphurization equipment neat stress outlet with chimney it
Between, including the evaporator with wet desulphurization equipment neat stress outlet connection, the condensation recuperator and system being connect respectively with evaporator
Refrigerant cycle system, condensation recuperator connect chimney, wherein evaporator is used to high temperature saturation neat stress cooling condensation becoming low
It has enough to eat and wear and neat stress, low temperature liquid refrigerant is vaporized into gaseous refrigerant；Condensation recuperator is used to low temperature being saturated neat stress
High temperature unsaturation neat stress is absorbed heat into, gaseous refrigerant is condensed into low temperature liquid refrigerant；Refrigerant-cycle systems are for changing
The physical state of variable refrigerant simultaneously recycles refrigerant；
Further, refrigerant-cycle systems include gas-liquid separator, compressor, liquid storage device, filter, throttle valve, gas
Liquid/gas separator connects the evaporator and compressor, compressor connection condensation recuperator, liquid storage device connection condensation recuperator, filtering
Device connects the liquid storage device, and throttle valve connects the filter and connect with evaporator；
Further, refrigerant-cycle systems further include auxiliary condenser, auxiliary condenser connect compressor and liquid storage device；
It further, further include chemicals dosing plant, chemicals dosing plant includes dosing tank and blender, and dosing tank passes through drug feeding pipeline
It is connect with the condensate outlet of evaporator, drug feeding pipeline is equipped with dosing pump；
The utility model utilizes compression heat pump working principle, in recycling saturation neat stress while vapor, using net
The sensible heat and latent heat of flue gas cool-down condensation process release, the condensed neat stress of heating cooling, realize neat stress re-heat, reach
The effect that " white plume " energy conservation is administered.
A, this system is arranged in desulphurization system outlet, and all kinds of heat recovery apparatuses of boiler system can operate normally, especially
Low low-level (stack-gas) economizer is remained, hot-air is extracted without from air preheater, the therrmodynamic system of boiler is not influenced, to boiler thermal efficiency
Substantially there are few influences；
B, flue gas condensing water can be recycled as sulfur removal technology water moisturizing, reduce desulphurization system totality water consume；
C, it can be eliminated according to " white plume " and determine the final re-heat temperature of neat stress (" eliminating white smoke " operating condition), according to final multiple
Hot temperature determines cooling condensation temperature, promotes Technical Economy and adjustability that " white plume " is administered to the maximum extent；
D, water can be received according to maximum and determine that neat stress cools down condensation temperature (" spot patch water " operating condition), according to cooling condensation temperature
Degree determines final re-heat temperature, promotes Technical Economy and adjustability that " white plume " is administered to the maximum extent；
E, septate heat transfer is carried out using refrigerant and neat stress, with the heat exchange of common gas-gas or air-water heat exchange (MGGH system
System) it compares, overall heat-transfer coefficient K is bigger, can effectively reduce heat exchanger area, reduces equipment investment.
Detailed description of the invention
Fig. 1 is the system and flow diagram that the utility model desulfurization fume is administered；
Fig. 2 is the system and flow diagram that the utility model desulfurization fume administers (in conjunction with spot patch water condition)；
In figure: 1- wet desulphurization equipment, 2- evaporator, 3- gas-liquid separator, 4- compressor, 5- condensation recuperator, 6- storage
Liquid device, 7- filter, 8- throttle valve, 9- chimney, 10- auxiliary condenser, 11- dosing tank, 12- dosing pump；
A- original flue gas, B- high temperature saturation neat stress, C- low temperature saturation neat stress, D- high temperature unsaturation neat stress, E- refrigeration
Agent, F- flue gas condensing water, G- hot water.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model is directed to the defect of existing desulfurization neat stress re-heat technology, provides a kind of improvement efficiently, economic
The system of desulfurization fume white plume extracts a large amount of condensed waters from desulfurization fume, promotes a variety of pollutions such as flue dust, sulfur dioxide
The secondary removing of object is recycled low temperature exhaust heat using heat pump techniques, is eliminated " white plume ", and flue gas emission visual effect is improved, real
Water-saving, energy saving and " white plume " is showed and has administered triple targets.
The system that the utility model administers desulfurization fume white plume is connected to the outlet of wet desulphurization equipment neat stress and cigarette
Between chimney, including the evaporator with wet desulphurization equipment neat stress outlet connection, the condensation recuperator being connect respectively with evaporator
And refrigerant-cycle systems, wherein evaporator is connected by flue and wet desulphurization equipment neat stress outlet, and refrigerant follows
Loop system and condensation recuperator are connect by flue with evaporator, and condensation recuperator is connect with blowdown stack entrance simultaneously, are freezed
Agent E forms enclosed between evaporator 2, gas-liquid separator 3, compressor 4, condenser 5, liquid storage device 6, filter 7, throttle valve 8
Circulation, refrigerant E liquid evaporates the big calorimetric of absorption in evaporator 2 makes high temperature saturation neat stress B cooling condensation, and refrigerant E steams
Vapour condenses the big calorimetric of releasing in condenser 5 makes low temperature be saturated neat stress C re-heat, and gas-liquid separator 3 can prevent compressor wet
Operating；It further include auxiliary condenser, the auxiliary condenser connect compressor and liquid storage device；It further include chemicals dosing plant, it is described to add
Medicine device includes dosing tank and blender, and the dosing tank is connected by the condensate outlet of drug feeding pipeline and evaporator, described
Drug feeding pipeline is equipped with dosing pump.
Heat-pipe heat exchanger, tubular heat exchanger or plate heat exchanger can be used in evaporator 2 and condensation recuperator 5, exchanges heat
Tubing matter is using fluoroplastics, dual phase steel and acid resisting steel etc..
High temperature saturation neat stress B cooling condensation, releases amount of heat in evaporator 2.When cooling down smaller, net quantity of heat is used for
Re-heat neat stress；When cooling down larger, a part of heat is used for re-heat neat stress, and another part heat enters auxiliary condenser 10,
For producing hot water.
Using Tthe utility model system, wet desulphurization equipment 1 export high temperature saturation neat stress B in evaporator 2 with refrigeration
Agent E liquid septate heat transfer realizes that cooling condensation forms low temperature saturation neat stress C, and low temperature is saturated neat stress C in condensation recuperator 5
In with refrigerant E steam septate heat transfer, after re-heat formed high temperature unsaturation neat stress D, into 9 qualified discharge of chimney, wherein steaming
It sends out high temperature saturation neat stress B cooling in device 2 and condenses recyclable flue gas condensing water F, flue gas condensing water F water and saturation neat stress drop
The factors such as warm degree are related, therefore staff can be according to factors such as environment temperature, envionmental humidities, and the artificial low temperature that adjusts is satisfied
With neat stress C re-heat temperature, high temperature saturation neat stress B cooling degree is finally determined according to re-heat temperature.
NaOH, Na is added by chemicals dosing plant in recovered flue gas condensed water pH value about 2~32CO3Wait alkaline matters by its pH value
After being adjusted to 6~7, as desulfurization moisturizing or flushing water reuse, chemicals dosing plant mainly includes dosing tank 11 and dosing pump 12.
Embodiment one:
Specific embodiment of the utility model one is described in detail below in conjunction with attached drawing 1, with certain 300MW coal fired power generation
Unit wet desulphurization is saturated for neat stress.
Local winter atmospheric pressure 91.33kPa, wet desulphurization equipment 1 export high temperature and are saturated 51.4 DEG C of neat stress B temperature, water
Vapor content 14.27%, into evaporator 2；After cooling, it is 50.0 DEG C that low temperature, which is saturated neat stress C temperature, and vapor contains
Amount 13.32% leaves evaporator 2 and enters condensation recuperator 5；Low temperature is saturated neat stress C through condensing 5 heat temperature raising of recuperator
21.4 DEG C, re-heat neat stress D temperature reaches 71.4 DEG C, and steam partial pressure is only 12.3kPa in flue gas, belongs to unsaturated flue gas；
High temperature unsaturation neat stress D realizes that " white plume " is administered by the discharge of chimney 9.
High temperature saturation neat stress B discharges 7.57MW Low Temperature Thermal altogether in evaporator 2；Recovered flue gas condensed water F flow 10.5t/
h；Recovered flue gas condensed water F is as 1 process water moisturizing reuse of desulphurization system；Low temperature saturation neat stress C inhales altogether in condensation recuperator 5
Receive 9.67MW heat.
Compression heat pump Energy Efficiency Ratio (COP) about 4.6, compressor work done 2.1MW.It will be needed for 21.4 DEG C of neat stress re-heat heating
Neat stress cooling condensation low level heat 78.3% is recycled in heat, compressor work done provides high-order heat 21.7%；
The utility model realizes that the total amount of heat of 21.4 DEG C of last row flue-gas temperature heating reduces by 1.2%, 51.4 DEG C of high temperature saturations
Neat stress B, which heats up 21.4 DEG C, needs 9.79MW heat, and 50.0 DEG C of low temperature saturation neat stress C heat up 21.4 DEG C and need the heat to be
9.67MW；The reason of causing this phenomenon essentially consists in neat stress in cooling condensation process, there is condensed water precipitation, re-heat neat stress
Total amount is reduced.
The utility model realizes the condensing recovery of vapor in saturation neat stress, and is back to wet desulphurization equipment 1；51.4
DEG C high temperature is saturated net fume flow 1187507Nm3/h, mass flow 1523.1t/h；And 50.0 DEG C of low temperature are saturated neat stress stream
Measure 1174481Nm3/h, mass flow 1512.6t/h；The condensation process that cools down recycles water 10.5t/h, and pH value 2~3 is dissolved with
The pollutants such as remaining SO2, HCl, meet the water quality requirement of sulfur removal technology moisturizing in a small amount of neat stress；It is de- that recycling water accounts for wet process
The 16.9% of 1 overall process water consumption of sulphur equipment can save 1 technique water consumption 16.9% of wet desulphurization equipment.
Steam partial pressure is lower in re-heat neat stress D after 21.4 DEG C of the utility model heating, is more advantageous to " white cigarette
The improvement of plumage ".50.0 DEG C of high temperature saturation neat stress B directly heat up steam partial pressure 12.3kPa after re-heat.
Embodiment two:
Specific embodiment of the utility model two is described in detail below in conjunction with attached drawing 2, it is still coal-fired with aforementioned 300MW
Generating set wet desulphurization is saturated for neat stress.Wet desulfurization system moisture loss includes absorption tower evaporated water, waste water row
High-volume, gypsum water amount, discharged gas fume water amount totally four, a total of about 62.2t/h.In order to realize desulphurization system " spot patch water ",
High temperature need to be saturated neat stress B to cool to 40.9 DEG C, enough moisture could be recycled as the moisturizing of desulphurization system process water.
Wet desulphurization equipment 1 exports high temperature and is saturated 51.4 DEG C of neat stress B temperature, water vapour content 14.27%, into evaporation
Device 2；After cooling, it is 40.9 DEG C that low temperature, which is saturated neat stress C temperature, water vapour content 8.32%, leaves the entrance of evaporator 2
Condense recuperator 5；Low temperature is saturated neat stress C and is heated to 56 DEG C through condensing recuperator 5, and steam partial pressure is only in flue gas
7.7kPa belongs to unsaturated flue gas；High temperature unsaturation neat stress D realizes that " white plume " is administered by the discharge of chimney 9.
High temperature saturation neat stress B discharges 46.1MW Low Temperature Thermal altogether in evaporator 2；Recovered flue gas condensed water F flow 62.2t/
H, recovered flue gas condensed water F are as 1 process water moisturizing reuse of desulphurization system；Low temperature saturation neat stress C inhales altogether in condensation recuperator 5
Receive 6.4MW heat；1200t/h water coabsorption 41.1MW heat in auxiliary condenser 10, is heated to 55 DEG C from 25 DEG C, by outer
Portion's pipe network is transported to heat user.
Compression heat pump Energy Efficiency Ratio (COP) about 4.6, compressor work done 1.4MW.The utility model realizes desulphurization system " zero
Moisturizing " simultaneously, can externally provide 1200t/h hot water (55 DEG C of temperature) per hour, and neat stress re-heat is warming up to 56 DEG C, is completed
" white plume " is effectively administered.Neat stress cooling condensation low level heat 78.3% is recycled in institute's calorific requirement, compressor work done provides high
Position heat 21.7%.
The utility model can realize jointly controlling for the cooling of desulfurization neat stress, condensation, receipts water and re-heat process, can basis
" white plume ", which is eliminated, determines the final re-heat temperature of neat stress, determines cooling condensation temperature, maximum limit according to final re-heat temperature
Degree ground promotes the Technical Economy and adjustability that " white plume " is administered.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (4)
1. a kind of system for administering desulfurization fume white plume is connected between the outlet of wet desulphurization equipment neat stress and chimney,
It is characterised in that it includes the evaporator with wet desulphurization equipment neat stress outlet connection, connect with the evaporator respectively
Condensation recuperator and refrigerant-cycle systems, the condensation recuperator connects chimney, wherein
The evaporator, which is used to high temperature saturation neat stress cooling condensation becoming low temperature, is saturated neat stress, by low temperature liquid refrigerant
It is vaporized into gaseous refrigerant；
The condensation recuperator is used to gaseous refrigerant at high temperature unsaturation neat stress be condensed to low temperature saturation neat stress heat absorption
At low temperature liquid refrigerant；
The refrigerant-cycle systems for changing refrigerant physical state and recycle refrigerant.
2. the system according to claim 1 for administering desulfurization fume white plume, which is characterized in that the refrigerant circulation
System includes gas-liquid separator, compressor, liquid storage device, filter, throttle valve, the gas-liquid separator connect the evaporator with
Compressor, the compressor connection condensation recuperator, the liquid storage device connection condensation recuperator, the filter connect the storage
Liquid device, the throttle valve connect the filter and connect with evaporator.
3. the system according to claim 2 for administering desulfurization fume white plume, which is characterized in that the refrigerant circulation
System further includes auxiliary condenser, and the auxiliary condenser connects the compressor and liquid storage device.
4. the system according to claim 1 or 2 for administering desulfurization fume white plume, which is characterized in that further include dosing
Device, the chemicals dosing plant include dosing tank and blender, and the dosing tank passes through the condensation of drug feeding pipeline and the evaporator
Liquid outlet connection, the drug feeding pipeline are equipped with dosing pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721660494.1U CN208260465U (en) | 2017-12-02 | 2017-12-02 | A kind of system for administering desulfurization fume white plume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721660494.1U CN208260465U (en) | 2017-12-02 | 2017-12-02 | A kind of system for administering desulfurization fume white plume |
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| CN208260465U true CN208260465U (en) | 2018-12-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983077A (en) * | 2017-12-02 | 2018-05-04 | 北京清新环境技术股份有限公司 | A kind of system and method for administering desulfurization fume white plume |
| CN111023134A (en) * | 2019-12-03 | 2020-04-17 | 东南大学 | Heat source tower heat pump for full heat recovery and quality improvement of flue gas waste heat |
-
2017
- 2017-12-02 CN CN201721660494.1U patent/CN208260465U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983077A (en) * | 2017-12-02 | 2018-05-04 | 北京清新环境技术股份有限公司 | A kind of system and method for administering desulfurization fume white plume |
| CN111023134A (en) * | 2019-12-03 | 2020-04-17 | 东南大学 | Heat source tower heat pump for full heat recovery and quality improvement of flue gas waste heat |
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