CN108613209A - Phase-change heat exchange system - Google Patents
Phase-change heat exchange system Download PDFInfo
- Publication number
- CN108613209A CN108613209A CN201810519234.5A CN201810519234A CN108613209A CN 108613209 A CN108613209 A CN 108613209A CN 201810519234 A CN201810519234 A CN 201810519234A CN 108613209 A CN108613209 A CN 108613209A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- connecting tube
- phase
- exchange system
- heat exchange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- 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
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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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
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- 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
Abstract
The present invention discloses a kind of phase-change heat exchange system, includes desulfurizing tower between smoke inlet pipelines and discharge line of smoke inlet pipelines, discharge line, connection, the slurry heat exchanger being communicated on desulfurizing tower, the chimney for being communicated in discharge line end；The annular loop structure of seal closure is formed by negative pressure Phase Transition Systems, preceding heat exchanger, rear heat exchanger and closed separator are constituted into seal closure structure, first, third connecting tube and the second, the 4th connecting tube are respectively communicated with together by the closed separator by knockout drum, and negative pressure state operation is formed by the medium in pipe, advantageously reduce manufacture and operating cost, and the white cigarette in removing smoke, reach discharge standard.
Description
【Technical field】
The present invention relates to a kind of phase-change heat exchange systems of coal-burning power plant.
【Background technology】
Environmental pollution management is more and more tighter, and to the exhaust apparatus of coal-burning power plant, more stringent requirements are proposed, with full
The ultra-clean emission request of foot.Coal-burning power plant usually using coal as the energy, combustion burning of coal generate a large amount of dust, sulfur dioxide,
The harmful smokes such as sulfur trioxide and nitrogen oxides, although this flue gas can reduce harmful smoke after denitration, desulfurization process
Composition, but carry prodigious moisture in the flue gas discharged, and carry Gypsum dust secretly, in flue gas emission air, in chimney week
It encloses and is easy to form " gypsum rain " or " coloured plume ", be commonly called as white cigarette, to reduce moisture content of flue gas adopting, general solution is by cigarette
Gas directly heats processing, but in the prior art, and manufacture and operating cost are increased to the technology of flue gas.
Thus, it is desirable to a kind of creative phase-change heat exchange system of low cost of design.
【Invention content】
In order to solve the above technical problems, the present invention provide it is a kind of recycle and low cost phase-change heat exchange system.
The present invention is achieved through the following technical solutions：A kind of phase-change heat exchange system includes smoke inlet pipelines, discharge
Pipeline, the slurry heat exchanger being communicated on desulfurizing tower, is connected to the desulfurizing tower being connected between smoke inlet pipelines and discharge line
Chimney in discharge line end；The phase-change heat exchange system is further provided with negative pressure Phase Transition Systems, which sets
There are the preceding heat exchanger being communicated in the smoke inlet pipelines, the rear heat exchanger being communicated on discharge line and is connected to forward and backward
There is the first connecting tube for being connected to preceding heat exchanger and second to connect for the closed separator of heat exchanger, the closed separator
The third connecting tube for taking over, being connected to rear heat exchanger is connect with the 4th connecting tube, with first, third connecting tube with the second, the 4th
The knockout drum that pipe is respectively communicated with.
The present invention has been further improved：The first connecting tube for being communicated in knockout drum protrudes into knockout drum, the second connecting tube
Connection is respectively communicated with the 4th connecting tube in the upper end of knockout drum in the lower end of knockout drum, third connecting tube.
The present invention has been further improved：Liquid medium is housed, and the first connecting tube protrudes out liquid Jie in the knockout drum
The upper surface of matter, the liquid medium enters by the second connecting tube in preceding heat exchanger, and liquid medium is via preceding heat exchanger quilt
Gaseous medium is formed after heating by the first connecting tube to enter in knockout drum.
The present invention has been further improved：Gaseous medium in the knockout drum heat exchanger after the entrance of third connecting tube
In, and form condensate liquid and flowed into knockout drum by the 4th connecting tube.
The present invention has been further improved：The phase-change heat exchange system is equipped with deduster of the connection in smoke inlet pipelines.
The present invention has been further improved：The slurry heat exchanger is equipped with the lower pipeline of 3 downside of connection desulfurizing tower and is connected to
The upper pipeline of desulfurizing tower upper end, pipeline is equipped with spray equipment on this.
The present invention has been further improved：The forward and backward heat exchanger is three dimensional pipe type heat exchanger.
The present invention has been further improved：The preceding heat exchanger is cooling heat exchanger, and the rear heat exchanger is cooling heat exchanger.
Beneficial effects of the present invention are as follows：The annular loop structure that sealing is formed by negative pressure Phase Transition Systems, i.e., will preceding change
Hot device, rear heat exchanger and closed separator constitute a closing structure, the closed separator by knockout drum by first, the
Three connecting tubes are respectively communicated with together with the second, the 4th connecting tube, and form negative pressure state operation by the liquid medium in pipe,
Manufacture and operating cost are advantageously reduced, and the white cigarette in removing smoke, reaches discharge standard.
【Description of the drawings】
Fig. 1 is the flow diagram of phase-change heat exchange system of the present invention.
Fig. 2 is the negative pressure Phase Transition Systems schematic diagram of phase-change heat exchange system shown in Fig. 1.
【Specific implementation mode】
As shown in Figures 1 and 2, be the invention discloses a kind of phase-change heat exchange system, be conducive to improve power plant eliminate it is white
The system of cigarette, the phase-change heat exchange system include：Smoke inlet pipelines 1, discharge line 2, connection are in smoke inlet pipelines 1 and discharge
Desulfurizing tower 3 between pipeline 2, the slurry heat exchanger 4 being communicated on desulfurizing tower 3, the chimney 5 for being communicated in 2 end of discharge line and
Negative pressure Phase Transition Systems.The flue gas of the smoke inlet pipelines 1 enters after denitrating system in deduster 6, then passes through smoke inlet
Pipeline 1 is conveyed into desulfurizing tower 3, carries out desulfurization, eliminates the harmful substances such as sulfur dioxide, sulfur trioxide, finally passes through discharge pipe
Road 2 is drained by chimney 5 in air.
Above-mentioned negative pressure Phase Transition Systems are equipped with the preceding heat exchanger 71 being communicated in the smoke inlet pipelines 1
Cooling heat exchanger), the rear heat exchanger 72 that is communicated on discharge line 2 (being temperature rise heat exchanger in the present invention) and be connected to forward and backward
The closed separator 70 of heat exchanger.
The closed separator 70 has the first connecting tube 73 for being communicated in preceding heat exchanger 71 and the second connecting tube 74, connects
Pass through rear heat exchanger 72 third connecting tube 75 and the 4th connecting tube 76, with first, third connecting tube and the second, the 4th connecting tube
The knockout drum 77 being respectively communicated with is used as medium, such as aqueous medium in the knockout drum equipped with liquid medium 78.
In the present embodiment, the first connecting tube 73 for being communicated in knockout drum 77 protrudes into knockout drum 77, i.e., first connects
Take over 73 protrudes out the upper surface of aqueous medium 78, is discharged into knockout drum convenient for gaseous medium, and the second connecting tube 74 is connected to separation
The lower end of tank 77, and aqueous medium pours into the second connecting tube 74, third connecting tube 75 and the 4th connecting tube 76 be respectively communicated in point
Upper end from tank 77.
The aqueous medium 78 enters by the second connecting tube 74 in preceding heat exchanger 71, and aqueous medium 78 is by preceding heat exchanger 71
Gaseous medium is formed after being heated by the first connecting tube 73 to enter in knockout drum 77.Gaseous medium warp in the knockout drum 77
Third connecting tube 75 is crossed to enter in rear heat exchanger 72, and gaseous medium cooled down after form condensate liquid (droplet) and pass through the 4th connection
Pipe 76 flows into knockout drum 77, to form the loop structure of seal closure.In embodiments of the present invention, pass through negative pressure phase transformation
System forms the annular loop structure of sealing, i.e., preceding heat exchanger, rear heat exchanger is constituted a closure with closed separator and tied
Structure, and negative pressure state operation is formed by the liquid medium (aqueous medium) in pipe, manufacture and operating cost are advantageously reduced, and disappear
Except the white cigarette in flue gas, and to flue gas after, reduce the generation of gypsum rain, reach discharge standard.
Before the flue gas after denitration is transported to by smoke inlet pipelines 1 after deduster 6 in heat exchanger 71, second
Aqueous medium in connecting tube 74 is as medium, and after heat exchange, aqueous medium forms gaseous medium after being heated, and passes through the first connection
It, will be defeated again after the flue gas cool-down after pipe 73 is discharged into knockout drum 77, and the flue gas after denitration dust collecting is by the preceding heat exchanger 71
It is sent into desulfurizing tower 3, facilitates flue gas to enter abundant desulfurization in desulfurizing tower 3, reduce the discharge capacity of pollutant；After denitration dust collecting
Flue gas after desulfurization process, desulfurization fume will be flowed to by discharge line 2 after in heat exchanger 72, due in knockout drum 77
It is used as medium after gaseous medium is inputted by third connecting tube 75 in heat exchanger 72, and the flue gas in rear heat exchanger 72 is passed through
Cross heating treatment, into chimney 5 after drain into air, and cool down after gaseous medium be condensed after formed liquid medium (water
Pearl) and it is attached to the inner wall of the 4th connecting tube 76, then flow into knockout drum 77.By preceding heat exchanger 71 to denitration dust collecting and denitration
Flue gas cool-down after, on the one hand substantially improve desulfurization effect of the flue gas in desulfurizing tower, on the other hand reduce in discharge flue gas
The content of aqueous vapor and pollutant, and flue gas is carried out by heating treatment by rear heat exchanger 72 again, the temperature of flue gas is improved, is reduced
Vapor content in flue gas realizes the effect for eliminating white cigarette.
In the present embodiment, the forward and backward heat exchanger is three dimensional pipe type heat exchanger.The slurry heat exchanger 4 is equipped with position
In the downside of desulfurizing tower 3 lower pipeline 41 and be connected to the upper pipeline 42 of desulfurizing tower upper end, pipeline is equipped with spray equipment 43 on this.I.e.
High-temperature flue gas enters in desulfurizing tower 3, is handled flue gas desulfurization by the spray equipment 43 of slurry heat exchanger 4, while slurry reflux
It is flowed into slurry heat exchanger 4 to the lower end of desulfurizing tower 3, and by lower pipeline 41, the upper end that the flue gas after desulfurization passes through desulfurizing tower 3
Into in discharge line 2.
Claims (8)
1. a kind of phase-change heat exchange system includes smoke inlet pipelines, discharge line, connection in smoke inlet pipelines and discharge pipe
Desulfurizing tower between road, the slurry heat exchanger being communicated on desulfurizing tower, the chimney for being communicated in discharge line end；Its feature exists
In：The phase-change heat exchange system is further provided with negative pressure Phase Transition Systems, which is equipped with and is communicated in the flue gas and enters
Preceding heat exchanger on mouthful pipeline, the rear heat exchanger being communicated on discharge line and the closed separation for being connected to forward and backward heat exchanger
Device, which has be connected to before heat exchanger the first connecting tube and the second connecting tube, be connected to after exchange heat
The separation that the third connecting tube of device is respectively communicated with the 4th connecting tube, with first, third connecting tube with the second, the 4th connecting tube
Tank.
2. phase-change heat exchange system as described in claim 1, it is characterised in that：The first connecting tube for being communicated in knockout drum protrudes into point
From in tank, the connection of the second connecting tube is respectively communicated with the 4th connecting tube in knockout drum in the lower end of knockout drum, third connecting tube
Upper end.
3. phase-change heat exchange system as claimed in claim 2, it is characterised in that：Liquid medium, and first are housed in the knockout drum
Connecting tube protrudes out the upper surface of liquid medium, and the liquid medium enters by the second connecting tube in preceding heat exchanger, and liquid
Medium forms gaseous medium after being heated via preceding heat exchanger and is entered in knockout drum by the first connecting tube.
4. phase-change heat exchange system as claimed in claim 3, it is characterised in that：Gaseous medium in the knockout drum connects by third
It takes over into rear heat exchanger, and forms condensate liquid and flowed into knockout drum by the 4th connecting tube.
5. phase-change heat exchange system as claimed in claim 4, it is characterised in that：The phase-change heat exchange system is equipped with connection and enters in flue gas
Deduster on mouth pipeline.
6. phase-change heat exchange system as described in claim 1, it is characterised in that：The slurry heat exchanger is equipped under connection desulfurizing tower 3
The lower pipeline of side and the upper pipeline for being connected to desulfurizing tower upper end, pipeline is equipped with spray equipment on this.
7. phase-change heat exchange system as claimed in claim 4, it is characterised in that：The forward and backward heat exchanger is three dimensional pipe type heat exchanger.
8. the phase-change heat exchange system as described in any one of claim 1 to 7, it is characterised in that：The preceding heat exchanger is that cooling is changed
Hot device, the rear heat exchanger is cooling heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519234.5A CN108613209A (en) | 2018-05-24 | 2018-05-24 | Phase-change heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810519234.5A CN108613209A (en) | 2018-05-24 | 2018-05-24 | Phase-change heat exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108613209A true CN108613209A (en) | 2018-10-02 |
Family
ID=63664228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810519234.5A Pending CN108613209A (en) | 2018-05-24 | 2018-05-24 | Phase-change heat exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108613209A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057222A (en) * | 2019-04-15 | 2019-07-26 | 山东博然电力科技有限公司 | A kind of MGGH and residual neat recovering system of composite phase-change heat exchange |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818472A (en) * | 2006-01-10 | 2006-08-16 | 孙克勤 | Separated smoke re-heater and heat-exchanging method |
| CN102798138A (en) * | 2012-08-30 | 2012-11-28 | 辽宁中昊新技术有限公司 | Plate type coupled low-temperature flue gas waste heat recovery device used for air heating |
| CN204694131U (en) * | 2015-05-05 | 2015-10-07 | 北京海淀中京工程设计软件技术有限公司 | A kind of complex phase-change heat exchanger |
| CN106474860A (en) * | 2015-08-25 | 2017-03-08 | 贺方昀 | Wet desulfurization flue gas processing system and processing method |
| CN106801884A (en) * | 2016-11-22 | 2017-06-06 | 浙江巨化热电有限公司 | A kind of smoke comprehensive processing unit and its method |
| CN206810050U (en) * | 2017-02-24 | 2017-12-29 | 天津华赛尔传热设备有限公司 | A kind of flue gas of wet desulphurization disappears white system |
| CN207378854U (en) * | 2017-10-29 | 2018-05-18 | 盘锦北方沥青股份有限公司 | A kind of flue gas phase change heat exchange device |
| CN208418777U (en) * | 2018-05-24 | 2019-01-22 | 昆山市三维换热器有限公司 | Phase-change heat exchange system |
-
2018
- 2018-05-24 CN CN201810519234.5A patent/CN108613209A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818472A (en) * | 2006-01-10 | 2006-08-16 | 孙克勤 | Separated smoke re-heater and heat-exchanging method |
| CN102798138A (en) * | 2012-08-30 | 2012-11-28 | 辽宁中昊新技术有限公司 | Plate type coupled low-temperature flue gas waste heat recovery device used for air heating |
| CN204694131U (en) * | 2015-05-05 | 2015-10-07 | 北京海淀中京工程设计软件技术有限公司 | A kind of complex phase-change heat exchanger |
| CN106474860A (en) * | 2015-08-25 | 2017-03-08 | 贺方昀 | Wet desulfurization flue gas processing system and processing method |
| CN106801884A (en) * | 2016-11-22 | 2017-06-06 | 浙江巨化热电有限公司 | A kind of smoke comprehensive processing unit and its method |
| CN206810050U (en) * | 2017-02-24 | 2017-12-29 | 天津华赛尔传热设备有限公司 | A kind of flue gas of wet desulphurization disappears white system |
| CN207378854U (en) * | 2017-10-29 | 2018-05-18 | 盘锦北方沥青股份有限公司 | A kind of flue gas phase change heat exchange device |
| CN208418777U (en) * | 2018-05-24 | 2019-01-22 | 昆山市三维换热器有限公司 | Phase-change heat exchange system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057222A (en) * | 2019-04-15 | 2019-07-26 | 山东博然电力科技有限公司 | A kind of MGGH and residual neat recovering system of composite phase-change heat exchange |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181002 |