CN109631067A - A kind of recycling of flue gas moisture, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device - Google Patents
A kind of recycling of flue gas moisture, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device Download PDFInfo
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- CN109631067A CN109631067A CN201910007896.9A CN201910007896A CN109631067A CN 109631067 A CN109631067 A CN 109631067A CN 201910007896 A CN201910007896 A CN 201910007896A CN 109631067 A CN109631067 A CN 109631067A
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- heat
- flue gas
- condensation
- condensing
- flue
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/04—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of recycling of flue gas moisture, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system devices.The present invention includes condensing heat-exchanging pipe, sonic agglomerator, fine mist separator, condensation separator flue, condensed water storage tank, compressor, heat pump, condensing agent surge tank.Apparatus of the present invention are arranged in desulfurization rear pass, using low boiling point condensing agent cooled flue gas, are made the hydrogenesis and separation in desulfurization outlet saturated flue gas, are realized the high efficiente callback of moisture in flue gas；Make fine mist and fine particulate contaminants coacervating large particle using sonic agglomeration technology, carry out gas-liquid using fine mist separator and further efficiently separate, thus the fine particulate contaminants in high-efficiency dehydration and simultaneous removing flue gas；It realizes that condensing agent recycles using heat pump, and realizes the effective recycling of fume afterheat.
Description
Technical field
The invention belongs to technical field of energy saving and environmental protection, it is related to a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN connection
Close system and device.
Background technique
Contain large quantity of moisture in coal-burning boiler tail flue gas, it is close under the conditions of desulfurization exports about 50 DEG C of smoke temperatures even to have reached
To saturation state, furthermore flue gas enters and also results in the evaporation of desulfurization slurry moisture when desulfurizing tower is desulfurized slurries combination cooling, because
Water in this China overwhelming majority Desulphurization for Coal-fired Power Plant system outlet flue gas is in saturation even hypersaturated state.If can will be electric
Moisture recycles and carries out resource utilization in factory's flue gas, builds coal unit or coastal area fired power generating unit for water-deficient area
It drops low water usage cost, reduce relying on important economic significance to sea water desalination.
It is recycled for moisture in power-plant flue gas, what is possessed some special knowledge at present mainly has cooling condensation, liquid absorption and UF membrane
Three kinds of technologies, but there is no mature engineer application case.It is cold wherein for the feature that coal-fired flue-gas flow is big, dust-laden is high
But condensation technology is opposite has better engineering adaptability.Water saturation flue gas carries out water condensation by cooling down, in theory and practice
It is all uncomplicated, but in engineer application solution still in need critical issue:
(1) since smoke temperature is low (50 DEG C), huge using the cooling required water of aqueous medium, fume-dehydrating may not have well
Benefit, need select have good thermal capacitance ability medium；(2) mist droplet particle size condensed is smaller (general < 15 μm), conventional
Gas-liquid separator is difficult to separate；(3) it is the overall benefit for promoting flue gas moisture recycling, condensation process can be comprehensively considered in flue gas
The removings of the subparticles such as solid and aerosol, the comprehensive utilization of low temperature exhaust heat.
Summary of the invention
To solve the problems, such as involved in background, the present invention provides a kind of recycling of flue gas moisture, gas cleaning and waste heat benefits
With association system device.
The technical solution adopted by the present invention to solve the technical problems is:
The present invention includes condensing heat-exchanging pipe, sonic agglomerator, fine mist separator, condensation separator flue, condensed water
Storage tank, compressor, heat pump, condensing agent surge tank.
The condensing heat-exchanging pipe is the cooling core component of flue gas, and flue gas flows outside pipe, is managed interior cold using low boiling point
Solidifying agent exchanges heat, and condensing agent is liquid when entering condensing heat-exchanging pipe, and gasification, gaseous state outflow are heated in condensing heat-exchanging pipe
Condensing heat-exchanging pipe.To adjust condensing agent evaporating temperature point, the suitable vacuum degree of control in condensing heat-exchanging pipe.
The condensing heat-exchanging pipe, dust stratification and synchronization have high efficient heat exchanging and catch the hydrophobic ability of water in order to prevent, and condensation is changed
What uses steel pipe light pipe before heat pipe, is typically chosen 3~5 grades according to engineering is practical, subsequent condensation heat exchanger tube uses helix fin
Heat exchanger tube.Light pipe heat exchanger tube tentatively cools down by flue gas, and Liquid water content is not high in flue gas at this time, and product can be effectively prevented in light pipe
Ash, after flue gas moderately cooling, Liquid water content increases in flue gas, using spiral finned tube improving heat exchanging efficiency, relies on simultaneously
Helix fin trapping separation liquid water, and water conservancy diversion is carried out to the liquid water adhered on spiral finned tube, the liquid on spiral finned tube
State water flowing also has self-cleaning ability, effectively prevent dust stratification.
The condensing heat-exchanging pipe carries out heat exchange area design according to engineering actual demand, and target is control flue gas cool-down
Amplitude is 8~12 DEG C.
The sonic agglomerator is agglomerated the fine mist of condensation for larger particles using sonic agglomeration technology, more just
In gas-liquid separation.Vaporous water needs the nuclei of condensation, (packet of fine particulate contaminants present in flue gas during being condensed into drop
Include solid and aerosol) it just can be used as the nuclei of condensation, therefore, flue gas condensing condensation can play dehydration and removing subparticle
The double action of pollutant.But, the inevitable drop for forming partial size fine (< 15 μm) of natural condensation of water, is unfavorable for gas
Liquid efficiently separates.Sonic agglomeration is to promote subparticle to move using ultrasonic wave, makes it that the collision of bigger probability occur each other
Merge, to form biggish particle.
The fine mist separator, under the collective effect of condensation condensation and sonic agglomeration, condensing heat-exchanging pipe is to cold
It coagulates the water to get off and carries out initial gross separation, but unavoidably there are also partial drops to be separated in condensation process, especially grain
Therefore the lesser drop of diameter after flue gas condensing, then is arranged fine mist separator, is efficiently separated to remaining droplet.
Preferably using has compared with high separating efficiency, resistance coefficient lesser separator partial size < 15 μm drop.
The condensation separator flue, for mounting arrangements condensing heat exchanger, sonic agglomerator and fine mist separation
Device, in order to rationally control flow velocity between condensing heat exchanger pipe, flue gas flow rate in fine mist separator, condensation separator flue is cut
Area is generally larger than normal empty flue, and inlet and outlet need to design reasonable flaring and guiding device at this time, flows through condensation and changes
The air velocity distribution of hot device and fine mist separator is uniform.
The condensation separator flue, needs to arrange water flushing device inside it, for condensing heat-exchanging pipe and micro-
Thin mist separator is rinsed if necessary.
The condensation separator flue, its underpart floor design are that certain tilt angle progress is hydrophobic, and tool is arranged
The discharge outlet for thering is water seal to act on, the continuous discharge for condensed water.
The condensed water storage tank is collectively formed for the collection of condensed water, and with the discharge outlet of condensation separator flue
Sealing structure for water.
The compressor, heat pump, condensing agent surge tank, collectively constitute a set of heat pump system, realize the circulation of condensing agent.
Heat pump is using the low-grade steam of power plant as power.The heat pump system heat obtained from flue gas can be used for living with heat
Or therrmodynamic system low-temperature heat or neat stress reheating.
The present invention has the beneficial effect that:
The object of the invention is to arrange flue gas condensing dehydration device in desulfurization rear pass, the height of moisture in flue gas is realized
Effect recycling, the synchronous fine particulate contaminants using in condensation condensation technique removing flue gas, and fume afterheat is realized using heat pump
Effective recycling.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the invention.
In Fig. 1: 1, condensing heat-exchanging pipe；2, sonic agglomerator；3, fine mist separator；4, condensation separator flue；5,
Condensed water storage tank；6, compressor；7, heat pump；8, condensing agent surge tank.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, a kind of denitrating catalyst performance monitoring method and device, including condensing heat-exchanging pipe 1, sonic agglomerator
2, fine mist separator 3, condensation separator flue 4, condensed water storage tank 5, compressor 6, heat pump 7, condensing agent surge tank 8.
The condensing heat-exchanging pipe 1, the flue gas after desulfurization initially enter condensing heat-exchanging pipe 1, and flue gas flows outside pipe, in pipe
It is exchanged heat using low boiling point condensing agent.Condensing agent uses counter-flow arrangement, i.e., flows into from the low-temperature end of condensing heat-exchanging pipe 1, from height
Warm end outflow.To adjust condensing agent evaporating temperature point, the suitable vacuum degree of control in condensing heat-exchanging pipe 1.
The condensing heat-exchanging pipe 1, dust stratification and synchronization have high efficient heat exchanging and catch the hydrophobic ability of water in order to prevent, and condensation is changed
What uses steel pipe light pipe before heat pipe 1, is typically chosen 3~5 grades according to engineering is practical, subsequent condensation heat exchanger tube 1 uses spiral fin
Piece heat exchanger tube.Light pipe heat exchanger tube tentatively cools down by flue gas, and Liquid water content is not high in flue gas at this time, and product can be effectively prevented in light pipe
Ash, after flue gas moderately cooling, Liquid water content increases in flue gas, using spiral finned tube improving heat exchanging efficiency, relies on simultaneously
Helix fin trapping separation liquid water, and water conservancy diversion is carried out to the liquid water adhered on spiral finned tube, the liquid on spiral finned tube
State water flowing also has self-cleaning ability, effectively prevent dust stratification.
The condensing heat-exchanging pipe 1 carries out heat exchange area design according to engineering actual demand, and target is control flue gas cool-down
Amplitude is 8~12 DEG C.
The sonic agglomerator 2 is arranged in wall surface or the inside of condensation separator flue 4, according to sonic agglomerator 2
The specific structure of watt level and condensation separator flue 4 can be multiple with distributed arrangement, realize and effectively cover in sound wave whole flow field
Lid.
The fine mist separator 3, arrangement and condensing heat exchanger rear portion, can arrange one or more levels.Fine mist
Separator 3 needs to consider its hydrophobic and cleaning ability in arrangement according to specific structure.
The condensation separator flue 4, for mounting arrangements condensing heat exchanger 1, sonic agglomerator 2 and fine mist point
From device 3, in order to rationally control flow velocity between 1 pipe of condensing heat exchanger, flue gas flow rate in fine mist separator 2, condensation separator cigarette
The sectional area in road 4 is generally larger than normal empty flue, and inlet and outlet need to design reasonable flaring and guiding device at this time, flows through
The air velocity distribution of condensing heat exchanger 1 and fine mist separator 3 is uniform.
The condensation separator flue 4, needs to arrange water flushing device inside it, for 1 He of condensing heat-exchanging pipe
Fine mist separator 3 is rinsed if necessary.
The condensation separator flue 4, its underpart floor design are that certain tilt angle progress is hydrophobic, and tool is arranged
The discharge outlet for thering is water seal to act on, the continuous discharge for condensed water.
The condensed water storage tank 5, for the collection of condensed water, and with the common shape of the discharge outlet of condensation separator flue 4
At sealing structure for water.
The compressor 6, heat pump 7, condensing agent surge tank 8, collectively constitute a set of heat pump system, realize following for condensing agent
Ring.Heat pump 7 is using the low-grade steam of power plant as power.The heat pump system heat obtained from flue gas can be used for living
With heat or therrmodynamic system low-temperature heat or neat stress reheating.
Claims (6)
1. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device, it is characterised in that including condensing heat-exchange
Pipe, sonic agglomerator, fine mist separator, condensation separator flue, condensed water storage tank, compressor, heat pump, condensing agent buffering
Tank；
The condensing heat-exchanging pipe is the cooling core component of flue gas, and flue gas flows outside pipe, is managed interior using low boiling point condensing agent
It exchanges heat, condensing agent is liquid when entering condensing heat-exchanging pipe, and gasification, gaseous state outflow condensation are heated in condensing heat-exchanging pipe
Heat exchanger tube；To adjust condensing agent evaporating temperature point, vacuum degree is controlled in condensing heat-exchanging pipe；
The condensing heat-exchanging pipe, dust stratification and synchronization have high efficient heat exchanging and catch the hydrophobic ability of water, condensing heat-exchanging pipe in order to prevent
It is preceding what use steel pipe light pipe, be typically chosen 3~5 grades according to engineering is practical, subsequent condensation heat exchanger tube is using helix fin heat exchange
Pipe；Light pipe heat exchanger tube tentatively cools down by flue gas, and Liquid water content is not high in flue gas at this time, and dust stratification can be effectively prevented in light pipe,
Flue gas is moderately after cooling, and Liquid water content increases in flue gas, using spiral finned tube improving heat exchanging efficiency, while relying on spiral fin
Piece trapping separation liquid water, and water conservancy diversion is carried out to the liquid water adhered on spiral finned tube, the liquid water stream on spiral finned tube
It is dynamic that also there is self-cleaning ability, it effectively prevent dust stratification；
The condensing heat-exchanging pipe carries out heat exchange area design according to engineering actual demand, and target is control flue gas cool-down amplitude
It is 8~12 DEG C.
2. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device according to claim 1, special
Sign is the sonic agglomerator, is agglomerated the fine mist of condensation for larger particles using sonic agglomeration technology, is more convenient for
Gas-liquid separation；Vaporous water needs the nuclei of condensation during being condensed into drop, fine particulate contaminants conduct present in flue gas
The nuclei of condensation, therefore, flue gas condensing condensation play a dual role of dehydration and removing fine particulate contaminants.
3. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device according to claim 2, special
Sign is the fine mist separator, and under the collective effect of condensation condensation and sonic agglomeration, condensing heat-exchanging pipe is to condensation
The water to get off carries out initial gross separation, but unavoidably there are also partial drops to be separated in condensation process, especially partial size
Therefore lesser drop after flue gas condensing, then is arranged fine mist separator, is efficiently separated to remaining droplet；It adopts
Have with to partial size < 15 μm drop compared with high separating efficiency, the lesser separator of resistance coefficient.
4. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device according to claim 3, special
Sign is the condensation separator flue, is used for mounting arrangements condensing heat exchanger, sonic agglomerator and fine mist separator,
In order to rationally control flow velocity between condensing heat exchanger pipe, flue gas flow rate in fine mist separator, the section of condensation separator flue
Product is greater than normal empty flue, and inlet and outlet design at this time has flaring and guiding device, flows through condensing heat exchanger and fine mist point
It is uniform from the air velocity distribution of device；
The condensation separator flue, needs to arrange water flushing device inside it, for condensing heat-exchanging pipe and fine mist
Drop separator is rinsed if necessary；
The condensation separator flue, its underpart floor design are that certain tilt angle progress is hydrophobic, and is arranged with water
The discharge outlet of envelope effect, the continuous discharge for condensed water.
5. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device according to claim 4, special
Sign is the condensed water storage tank, and water is collectively formed for the collection of condensed water, and with the discharge outlet of condensation separator flue
Seal structure.
6. a kind of flue gas moisture recycling, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device according to claim 5, special
Sign is the compressor, heat pump, condensing agent surge tank, collectively constitutes a set of heat pump system, realizes the circulation of condensing agent；Heat
Pump is using the low-grade steam of power plant as power；The heat pump system heat obtained from flue gas can be used for living with heat or
Therrmodynamic system low-temperature heat or neat stress reheating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007896.9A CN109631067A (en) | 2019-01-04 | 2019-01-04 | A kind of recycling of flue gas moisture, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007896.9A CN109631067A (en) | 2019-01-04 | 2019-01-04 | A kind of recycling of flue gas moisture, gas cleaning and UTILIZATION OF VESIDUAL HEAT IN association system device |
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| CN109631067A true CN109631067A (en) | 2019-04-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110292828A (en) * | 2019-07-31 | 2019-10-01 | 中国计量大学 | A kind of water lift disappears white device and its water lift disappears whitening method |
| CN112090251A (en) * | 2020-09-09 | 2020-12-18 | 太原理工大学 | For removing SO in flue gas3Acid mist aerosol device and method thereof |
| CN114159918A (en) * | 2021-12-09 | 2022-03-11 | 武汉钢铁有限公司 | Converter primary flue gas fine particle sound wave agglomeration efficient dust removal system |
| CN115930243A (en) * | 2023-01-09 | 2023-04-07 | 淮阴工学院 | Intelligent chemical flue gas recycling and adjusting equipment |
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| CN107398161A (en) * | 2017-09-11 | 2017-11-28 | 西安热工研究院有限公司 | Coal-fired power station boiler flue gas moisture reclaims and the system and method for fine particle removing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110292828A (en) * | 2019-07-31 | 2019-10-01 | 中国计量大学 | A kind of water lift disappears white device and its water lift disappears whitening method |
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| CN112090251A (en) * | 2020-09-09 | 2020-12-18 | 太原理工大学 | For removing SO in flue gas3Acid mist aerosol device and method thereof |
| CN114159918A (en) * | 2021-12-09 | 2022-03-11 | 武汉钢铁有限公司 | Converter primary flue gas fine particle sound wave agglomeration efficient dust removal system |
| CN115930243A (en) * | 2023-01-09 | 2023-04-07 | 淮阴工学院 | Intelligent chemical flue gas recycling and adjusting equipment |
| CN115930243B (en) * | 2023-01-09 | 2023-09-29 | 淮阴工学院 | Intelligent chemical flue gas recycling and adjusting equipment |
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