CN203432423U - Smoke composite heat exchanger with variable load - Google Patents

Smoke composite heat exchanger with variable load Download PDF

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Publication number
CN203432423U
CN203432423U CN201320425519.5U CN201320425519U CN203432423U CN 203432423 U CN203432423 U CN 203432423U CN 201320425519 U CN201320425519 U CN 201320425519U CN 203432423 U CN203432423 U CN 203432423U
Authority
CN
China
Prior art keywords
heat
heat exchanger
composite heat
storing box
flue gas
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.)
Expired - Fee Related
Application number
CN201320425519.5U
Other languages
Chinese (zh)
Inventor
汪毅
李晓东
王栋毅
王晓明
林奕逸
沈浩然
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baosteel Development Co Ltd
Original Assignee
Baosteel Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Baosteel Development Co Ltd filed Critical Baosteel Development Co Ltd
Priority to CN201320425519.5U priority Critical patent/CN203432423U/en
Application granted granted Critical
Publication of CN203432423U publication Critical patent/CN203432423U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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 relates to a smoke composite heat exchanger with a variable load. The smoke composite heat exchanger comprises a heated tube nest (1), a steam pocket (2) and a desalted water conveying pipeline (8), wherein an ascending pipe (3) is connected to the upper end of the steam pocket, two descending pipes (4) are connected to the lower end of the steam pocket, a liquid storage tank (5) is arranged on one of the descending pipes, the liquid storage tank is communicated with the desalted water conveying pipeline (8), and a load adjusting valve (6) is connected to the lower end of the liquid storage tank. The desalted water conveying pipeline (8) is connected to the side face of the liquid storage tank. A pipeline (9) is arranged between the upper end of the liquid storage tank (5) and the lower end of the load adjusting valve (6). The smoke composite heat exchanger has the advantages that the heat exchanging load can be adjusted as required, the water resource is prevented from being wasted, frequent startup and shutdown of the device are avoided, and the service life of the device is prolonged.

Description

A kind of flue gas composite heat-exchanger of variable load
Technical field
The utility model relates to flue gas heat-exchange unit, refers in particular to a kind of flue gas composite heat-exchanger of variable load.Belong to heat exchange process technical field.
Background technology
Flue gas composite heat-exchanger is one of equipment of current various boiler low-temperature fume UTILIZATION OF VESIDUAL HEAT IN, it is the heat transmission equipment that utilizes hot fume afterheat heating cryogen manufacturing and designing according to hot pipe technique, by the evaporation and condensation at sealing intraductal working medium, carry out transferring heat, there is high thermal conductivity.Its operation principle is to utilize demineralized water to absorb fume afterheat to produce hot water, wherein there is diabatic process twice, for passing to demineralized water, flue gas heat makes it to be vaporizated into steam for the first time, steam transfers heat to cold water more for the second time, the saturation state that is the interior steam of heat exchanger plays heat transmission instrumentality, during system operation, under certain heat transfer temperature difference, heat exchanger heat exchange amount is certain.
At present, the problem that existing low-temperature flue gas heat exchanger in use exists is, because the inner desalination water yield is unadjustable, and all the time in saturation state, at exhaust gas volumn and feed temperature certain in the situation that, the exchange capability of heat of heat exchanger immobilizes, and unit interval hot water output is certain value, and heat balance can not change.Owing to can not regulating heat exchange load, a large amount of hot water that flue gas heat-exchange unit produces can be wasted because of overflow in the situation that can not obtaining rationally utilizing, but as produce not according to the original design water yield of flue gas heat-exchange unit, in flue gas heat-exchange unit running, heat imbalance can cause superpressure and cause security incident, therefore how to regulate the heat exchange load of flue gas heat-exchange unit to become the problem that this area need to solve.
Utility model content
Technical problem to be solved in the utility model is to provide the flue gas composite heat-exchanger of kind of variable load, can need to regulate heat exchange load according to what produce, and the output of the hot water in heat exchanging process can be effectively controlled.
The technical scheme that the utility model addresses the above problem is as follows:
A flue gas composite heat-exchanger, comprise the tubulation that is heated, drum and demineralized water conveyance conduit, the upper end of described drum is connected with tedge, the lower end of drum connects two down-comers, it is characterized in that:
Wherein on a down-comer, liquid-storing box is installed, described liquid-storing box and demineralized water conveyance conduit are connected, the lower end connected load control valve of liquid-storing box.
As optimal way, described demineralized water conveyance conduit is connected to the side of liquid-storing box.
In order not affect steam/water circulating operation after being filled with liquid at liquid-storing box, between the upper end of described liquid-storing box and the lower end of load adjusting valve, pipeline is installed.
Use principle of the present utility model is, under normal operating condition, flue gas composite heat-exchanger bottom demineralized water, makes it to be vaporizated into steam and enters drum along tedge, at drum inner cold water and steam heat-exchanging, steam is met the cold condensed water that becomes, from drum bottom, along down-comer, reflux, now load adjusting valve is opened completely, does not store demineralized water in liquid-storing box, demineralized water, again by flue gas, moves in circles with this.Working medium in heat exchanger is saturation state, and heat exchanger exchange capability of heat is maximum.
When flue gas composite heat-exchanger need to reduce load, adjust Load Regulation valve opening, make liquid-storing box have a certain amount of demineralized water, heat exchanger heat transfer working medium amount is reduced, saturation state in heat exchanger becomes superheat state, heat exchanger wall temperature improves, and exchange capability of heat lowers, and again reaches new heat balance.
When flue gas composite heat-exchanger need to be replied maximum exchange capability of heat, adjust load adjusting valve to standard-sized sheet, make liquid-storing box not store demineralized water, heat exchanger heat transfer working medium amount is recovered, superheat state in heat exchanger becomes saturation state, and heat exchanger wall temperature drop is low, and exchange capability of heat recovers maximum rating.
Compared with prior art, the beneficial effects of the utility model are, heat exchanger of the present utility model can regulate heat exchange load as required, has both avoided the waste of water resource, also makes equipment avoid frequent start-stop to extend the service life of equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, the tubulation that is heated; 2, drum; 3, tedge; 4, down-comer; 5, liquid-storing box; 6, load adjusting valve; 7, water filling ball valve; 8, demineralized water conveyance conduit; 9, pipeline; 10, spilling water valve
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1, a kind of flue gas composite heat-exchanger of varying duty, comprise the tubulation 1 that is heated, drum 2 and demineralized water conveyance conduit 8, the upper end of described drum is connected with tedge 3, the lower end of drum connects two down-comers 4, wherein on a down-comer, liquid-storing box 5 is installed, described liquid-storing box and demineralized water conveyance conduit 8 are connected, the lower end connected load control valve 6 of liquid-storing box.
As preferred version, described demineralized water conveyance conduit 8 is connected to the side of liquid-storing box.
Pipeline 9 is installed between the lower end of the upper end of described liquid-storing box 5 and load adjusting valve 6.
Use principle of the present utility model is, under normal operating condition, flue gas composite heat-exchanger bottom demineralized water, makes it steam and is vaporizated into along tedge and enters drum, at drum inner cold water and steam heat-exchanging, steam is met the cold condensed water that becomes, from drum bottom, along down-comer, reflux, now load adjusting valve is opened completely, does not store demineralized water in liquid-storing box, demineralized water, again by flue gas, moves in circles with this.Working medium in heat exchanger is saturation state, and heat exchanger exchange capability of heat is maximum.
When flue gas composite heat-exchanger need to reduce load, adjust Load Regulation valve opening, make liquid-storing box have a certain amount of demineralized water, heat exchanger heat transfer working medium is reduced, and the saturation state in heat exchanger becomes superheat state, and heat exchanger wall temperature improves, exchange capability of heat lowers, and again reaches new heat balance.
When flue gas composite heat-exchanger need to be replied maximum exchange capability of heat, adjust load adjusting valve to standard-sized sheet, liquid-storing box is deposited and do not retained demineralized water, heat exchanger heat transfer working medium amount is recovered, superheat state in heat exchanger becomes saturation state, and heat exchanger wall temperature drop is low, and exchange capability of heat is replied maximum rating.

Claims (3)

1. a flue gas composite heat-exchanger for varying duty, comprises the tubulation that is heated (1), drum (2) and demineralized water conveyance conduit (8), and the upper end of described drum is connected with tedge (3), and the lower end of drum connects two down-comers (4), it is characterized in that:
Wherein on a down-comer, liquid-storing box (5) is installed, described liquid-storing box and demineralized water conveyance conduit (8) are connected, the lower end connected load control valve (6) of liquid-storing box.
2. the flue gas composite heat-exchanger of varying duty according to claim 1, is characterized in that:
Described demineralized water conveyance conduit (8) is connected to the side of liquid-storing box.
3. the flue gas composite heat-exchanger of varying duty according to claim 1, is characterized in that:
Pipeline (9) is installed between the lower end of the upper end of described liquid-storing box (5) and load adjusting valve (6).
CN201320425519.5U 2013-07-17 2013-07-17 Smoke composite heat exchanger with variable load Expired - Fee Related CN203432423U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320425519.5U CN203432423U (en) 2013-07-17 2013-07-17 Smoke composite heat exchanger with variable load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320425519.5U CN203432423U (en) 2013-07-17 2013-07-17 Smoke composite heat exchanger with variable load

Publications (1)

Publication Number Publication Date
CN203432423U true CN203432423U (en) 2014-02-12

Family

ID=50061457

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320425519.5U Expired - Fee Related CN203432423U (en) 2013-07-17 2013-07-17 Smoke composite heat exchanger with variable load

Country Status (1)

Country Link
CN (1) CN203432423U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277027A (en) * 2015-11-05 2016-01-27 吉林省电力科学研究院有限公司 Phase-change heat exchanger and heat exchange method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277027A (en) * 2015-11-05 2016-01-27 吉林省电力科学研究院有限公司 Phase-change heat exchanger and heat exchange method thereof

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140212

Termination date: 20160717

CF01 Termination of patent right due to non-payment of annual fee