CN208418777U - Phase-change heat exchange system - Google Patents

Phase-change heat exchange system Download PDF

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Publication number
CN208418777U
CN208418777U CN201820785825.2U CN201820785825U CN208418777U CN 208418777 U CN208418777 U CN 208418777U CN 201820785825 U CN201820785825 U CN 201820785825U CN 208418777 U CN208418777 U CN 208418777U
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China
Prior art keywords
heat exchanger
connecting tube
phase
exchange system
heat exchange
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CN201820785825.2U
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Chinese (zh)
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刘炎军
陆华
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KUNSHAN SANWEI HEAT EXCHANGER CO Ltd
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KUNSHAN SANWEI HEAT EXCHANGER CO Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

The utility model 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 connected on desulfurizing tower, the chimney for being connected to 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

Phase-change heat exchange system
[technical field]
The utility model relates to a kind of phase-change heat exchange systems of coal-burning power plant.
[background technique]
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 Ingredient, but have very big moisture in the flue gas discharged, and carry Gypsum dust secretly, in flue gas emission air, in chimney week " gypsum rain " easy to form or " coloured plume " is enclosed, white cigarette is commonly called as, to reduce moisture content of flue gas adopting, general solution is by cigarette Gas directly heats processing, but in the prior art, increases manufacture and operating cost to the technology of flue gas.
Thus, it is desirable to a kind of creative phase-change heat exchange system for designing low cost.
[utility model content]
In order to solve the above technical problems, the utility model provide it is a kind of recycle and low cost phase-change heat exchange system.
The utility model is achieved through the following technical solutions: a kind of phase-change heat exchange system, include smoke inlet pipelines, Discharge line, desulfurizing tower of the connection between smoke inlet pipelines and discharge line, the slurry heat exchanger being connected on desulfurizing tower, It is connected to the chimney of discharge line end;The phase-change heat exchange system is further provided with negative pressure Phase Transition Systems, the negative pressure phase transformation system System is equipped with the preceding heat exchanger being connected in the smoke inlet pipelines, the rear heat exchanger being connected on discharge line and is connected to The closed separator of forward and backward heat exchanger, the closed separator have be connected to before heat exchanger the first connecting tube with Second connecting tube, the third connecting tube for being connected to rear heat exchanger and the 4th connecting tube, with first, third connecting tube with second, the The knockout drum that four connecting tubes are respectively communicated with.
The utility model further improvement has: the first connecting tube for being connected to knockout drum protrudes into knockout drum, and second connects Adapter tube connection is respectively communicated in the lower end of knockout drum, third connecting tube and the 4th connecting tube in the upper end of knockout drum.
The utility model further improvement has: equipped with liquid medium in the knockout drum, and the first connecting tube protrudes out liquid The upper surface of state medium, the liquid medium enters in preceding heat exchanger by the second connecting tube, and liquid medium is via preceding heat exchange Device forms gaseous medium after being heated and is entered in knockout drum by the first connecting tube.
The utility model, which is further improved, to be had: the gaseous medium in the knockout drum exchanges heat after the entrance of third connecting tube In device, and forms condensate liquid and flowed into knockout drum by the 4th connecting tube.
The utility model, which is further improved, to be had: the phase-change heat exchange system is equipped with dedusting of the connection in smoke inlet pipelines Device.
The utility model, which is further improved, to be had: the slurry heat exchanger is equipped with lower pipeline and the company of 3 downside of connection desulfurizing tower It is connected to the upper pipeline of desulfurizing tower upper end, pipeline is equipped with spray equipment on this.
The utility model further improvement has: the forward and backward heat exchanger is three dimensional pipe type heat exchanger.
The utility model further improvement has: the preceding heat exchanger is cooling heat exchanger, and the rear heat exchanger is that cooling is changed Hot device.
The beneficial effects of the utility model are as follows: forming the annular loop structure of sealing by negative pressure Phase Transition Systems, i.e., will Preceding heat exchanger, rear heat exchanger and closed separator constitute a closing structure, and the closed separator is by knockout drum by the One, third connecting tube and the second, the 4th connecting tube are respectively communicated with together, and form negative pressure state by the liquid medium in pipe Operation, advantageously reduces manufacture and operating cost, and the white cigarette in removing smoke, and reaches discharge standard.
[Detailed description of the invention]
Fig. 1 is the flow diagram of the utility model phase-change heat exchange system.
Fig. 2 is the negative pressure Phase Transition Systems schematic diagram of phase-change heat exchange system shown in Fig. 1.
[specific embodiment]
As shown in Figures 1 and 2, a kind of phase-change heat exchange system disclosed for the utility model, being conducive to, which improves power plant, disappears The system of white-smoke-removing, the phase-change heat exchange system include: smoke inlet pipelines 1, discharge line 2, connection smoke inlet pipelines 1 with Desulfurizing tower 3 between discharge line 2, the slurry heat exchanger 4 being connected on desulfurizing tower 3, the chimney for being connected to 2 end of discharge line 5 and negative pressure Phase Transition Systems.The flue gas of the smoke inlet pipelines 1 enters in deduster 6 after denitrating system, then is entered by flue gas Mouth pipeline 1 is conveyed into desulfurizing tower 3, carries out desulfurization, eliminates the harmful substances such as sulfur dioxide, sulfur trioxide, finally by discharge Pipeline 2 is drained into atmosphere by chimney 5.
It is (practical new at this that above-mentioned negative pressure Phase Transition Systems are equipped with the preceding heat exchanger 71 being connected in the smoke inlet pipelines 1 Type is cooling heat exchanger), the rear heat exchanger 72 that is connected on discharge line 2 (being temperature rise heat exchanger in the utility model) and connection In the closed separator 70 of forward and backward heat exchanger.
The closed separator 70 has the first connecting tube 73 for being connected to 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 equipped with liquid medium 78 in the knockout drum.
In the present embodiment, the first connecting tube 73 for being connected to knockout drum 77 protrudes into knockout drum 77, i.e., first connects Adapter tube 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 in preceding heat exchanger 71 by the second connecting tube 74, and aqueous medium 78 passes through preceding heat exchanger 71 Gaseous medium is formed after being heated to enter in knockout drum 77 by the first connecting tube 73.Gaseous medium warp in the knockout drum 77 Cross third connecting tube 75 enter rear heat exchanger 72 in, and gaseous medium cooled down after formed condensate liquid (droplet) by the 4th connection Pipe 76 flows into knockout drum 77, to form the loop structure of seal closure.In the utility model embodiment, pass through negative pressure Phase Transition Systems form the annular loop structure of sealing, i.e., preceding heat exchanger, rear heat exchanger are constituted one with closed separator and closed Structure is closed, and negative pressure state operation is formed by the liquid medium (aqueous medium) in pipe, advantageously reduces manufacture and operating cost, And the white cigarette in removing smoke, and to flue gas after, reduce the generation of gypsum rain, reach discharge standard.
Before the flue gas after denitration is transported to after deduster 6 by smoke inlet pipelines 1 in heat exchanger 71, the For aqueous medium in two connecting tubes 74 as medium, after heat exchange, aqueous medium forms gaseous medium after being heated, and connects by first Adapter tube 73 is discharged into knockout drum 77, and the flue gas after denitration dust collecting is by after the preceding heat exchanger 71, by after the flue gas cool-down again It is conveyed into desulfurizing tower 3, facilitates flue gas to enter abundant desulfurization in desulfurizing tower 3, reduce the discharge amount of pollutant;Through denitration dust collecting Flue gas afterwards is after desulfurization process, after desulfurization fume will be flowed to by discharge line 2 in heat exchanger 72, due in knockout drum 77 Gaseous medium inputted by third connecting tube 75 after medium is used as in heat exchanger 72, and pass through the cigarette in rear heat exchanger 72 Gas pass through heating treatment, into chimney 5 after drain into air, and cool down after gaseous medium be condensed after form liquid medium (droplet) and the inner wall for being attached to the 4th connecting tube 76, then flow into knockout drum 77.By preceding heat exchanger 71 to denitration dust collecting simultaneously After the flue gas cool-down of denitration, desulfurization effect of the flue gas in desulfurizing tower is on the one hand substantially improved, on the other hand reduces discharge flue gas In aqueous vapor and pollutant content, and flue gas is carried out by heating treatment by rear heat exchanger 72 again, improves the temperature of flue gas, The vapor content in flue gas is reduced, 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, handles by the spray equipment 43 of slurry heat exchanger 4 flue gas desulfurization, 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 flue gas after desulfurization passes through the upper end of 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 connected on desulfurizing tower, the chimney for being connected to 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 connected to the flue gas and enters Preceding heat exchanger on mouthful pipeline, the rear heat exchanger being connected 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 third connecting tube and the 4th connecting tube of device, the separation being respectively communicated with first, third connecting tube and 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 connected to knockout drum protrudes into point From in tank, the connection of the second connecting tube is respectively communicated in the lower end of knockout drum, third connecting tube and the 4th connecting tube in knockout drum 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 in preceding heat exchanger by the second connecting tube, 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: the gaseous medium in the knockout drum connects by third Adapter tube enters in 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 with connection desulfurizing tower (3) The lower pipeline of downside 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 claims 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.
CN201820785825.2U 2018-05-24 2018-05-24 Phase-change heat exchange system Active CN208418777U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820785825.2U CN208418777U (en) 2018-05-24 2018-05-24 Phase-change heat exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820785825.2U CN208418777U (en) 2018-05-24 2018-05-24 Phase-change heat exchange system

Publications (1)

Publication Number Publication Date
CN208418777U true CN208418777U (en) 2019-01-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108613209A (en) * 2018-05-24 2018-10-02 昆山市三维换热器有限公司 Phase-change heat exchange system
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108613209A (en) * 2018-05-24 2018-10-02 昆山市三维换热器有限公司 Phase-change heat exchange system
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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