CN2622558Y - Heat-exchange system for coal-saving device - Google Patents
Heat-exchange system for coal-saving device Download PDFInfo
- Publication number
- CN2622558Y CN2622558Y CN 03232274 CN03232274U CN2622558Y CN 2622558 Y CN2622558 Y CN 2622558Y CN 03232274 CN03232274 CN 03232274 CN 03232274 U CN03232274 U CN 03232274U CN 2622558 Y CN2622558 Y CN 2622558Y
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- economizer
- heat
- pipeline
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- temperature
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Abstract
A coal economizer heat exchange system includes a coal economizer, several pieces of heat equipment which are connected by pipes in parallel, a water supply heat booster, a first pipe connected with the water supply heat booster outlet and the economizer inlet, a second pipe connected with the economizer outlet and all the heat equipment inlets and a third pipe connected with all the heat equipment outlets and the water supply heat booster outlet. The inlet of the water supply heat booster is also connected with a boiler supply pipe and the supplied water is used as the intermediate heat carrier to exchange heat in an open way between the economizer and heat equipment. The utility model, by utilizing the high-temperature water from the outlet of the economizer (low-temperature section) to preheat the low-temperature supplied water, can preheat several pieces of heat equipment at the same time; in this way, the economizer can be prevented from low-temperature erosion and the investment can be reduced. Moreover, after the economizer (low-temperature section) absorbs heat, the boiler can distribute and use the heat in a flexible way according to need. In addition, because the economizer is working under a state of no low-temperature erosion, the service life is long and the maintenance cost is low.
Description
(1) technical field
The utility model relates to the economizer heat exchange system that working media that a kind of heat that utilizes the outlet of self high temperature heats the low temperature import is avoided cold end corrosion and can be heated other low-temperature receiver simultaneously.
(2) background technology
The boiler feedwater of some enterprise is not at present directly entering economizer through under the situation of preheating, the easy like this cold end corrosion that causes economizer, perhaps utilize external thermal source heating boiler feedwater, but investment is big like this, the operational management workload is also big, simultaneously, also have other one or more low-temperature receiver medium also to need preheating in the enterprise.
(3) summary of the invention
The purpose of this utility model is to provide a kind of economizer, by this economizer preheating self feedwater avoiding cold end corrosion, other medium of preheating simultaneously, thus equipment and device are simplified, small investment, operational management are convenient.
A kind of economizer heat exchange system provided by the utility model, be characterized in, it comprises an economizer, one feed water preheater, several are by the hot equipment of using of pipeline parallel connection, first pipeline that connects feed water preheater outlet and economizer inlet, connect economizer exit and each second pipeline with hot equipment entrance, and each the 3rd pipeline of connection with hot equipment outlet and feed water preheater outlet, again: the import of feed water preheater also connects boiler feed pipe, and makes the intermediate heat carrier with feedwater and carry out open heat exchange by pipeline at economizer with between respectively with hot equipment.
Above-mentioned economizer heat exchange system is provided with flow control device at feed water preheater and each give water out or import department with hot equipment, and this flow control device is an automatic or manual control valve.
Above-mentioned economizer heat exchange system is being provided with flow switch on first pipeline, second pipeline and between first and second pipelines, and this flow switch is a manually-operated gate.
Above-mentioned economizer heat exchange system is provided with a bypass adjusting device between second pipeline and the 3rd pipeline.
Owing to adopted described technical solution, that is: the utility model is made the intermediate heat carrier with boiler feedwater and is carried out open heat exchange by pipeline between economizer and each are with hot equipment, heat carrier enter after by the feed water preheater preheating (low-temperature zone) economizer with heat recovery after distribution according to need use hot equipment utilization for a plurality of (or one), boiler feedwater enters drum or high temperature section economizer then.The utility model comes the low temperature feedwater of preheating self import by the high temperature water-supply that utilizes (low-temperature zone) economizer exit, and preheating simultaneously a plurality of other use hot equipment, both avoided the cold end corrosion of economizer, reduced investment again, and boiler feedwater can be considered distribution according to need utilization as a whole after (low-temperature zone) economizer absorbs heat, flexible.Economizer moves under the state of no cold end corrosion in addition, and the life-span is long, maintenance cost is low.
(4) description of drawings
Fig. 1 is the structural representation of embodiment of the present utility model.
(5) specific embodiment
As shown in Figure 1, the utility model, it is a kind of economizer heat exchange system, boiler feedwater enters economizer 1 by first pipeline after 2 heating are brought up to more than the acid dew-point temperature through feed water preheater, absorb and to enter feed water preheater 2 by second pipeline behind the heat and heat exchanger 3,4 comes preboiler feedwater and other medium, enter high temperature section economizer or boiler-steam dome at last, carry out open heat exchange so continuously.
On first pipeline and second pipeline and between first and second pipelines flow switch 6 is being set, when this economizer breaks down, can is switching this section economizer out, do not participating in heat exchange.
Between second pipeline and the 3rd pipeline, bypass adjusting device 5 is set, is used for stably keeping entering the acid dew point of the feed temperature of economizer 1, thereby has avoided cold end corrosion a little more than flue gas.
Inlet at each low-temperature receiver heat exchanger is provided with flow control device 7, heated medium outlet at each low-temperature receiver heat exchanger simultaneously is provided with temperature indicator 8, by regulating and distributing the flow that enters at the high temperature water-supply of each low-temperature receiver heat exchanger, the temperature of heated medium is remained in the scope of design code or customer requirements, make the feed temperature that enters boiler-steam dome or high temperature section economizer be higher than the acid dew point of flue gas simultaneously to avoid cold end corrosion.
Except that feed water preheater 2, the quantity of other low-temperature receiver heat exchanger can be 0～N, decides according to energy conservation project amount of capacity, technological process and user's needs.
Claims (4)
1. economizer heat exchange system, it is characterized in that, it comprises an economizer, a feed water preheater, several hot equipment of usefulness by the pipeline parallel connection, connect first pipeline of feed water preheaters outlet and economizers inlet, is connected economizer exit with each with second pipeline of hot equipment entrance and is connected respectively the 3rd pipeline with hot equipment exports and feed water preheater exports, again: the import of feed water preheater also connects boiler feed pipe, and makes the intermediate heat carrier with feedwater and carry out open heat exchange by pipeline at economizer with between respectively with hot equipment.
2. economizer heat exchange system according to claim 1 is characterized in that: at feed water preheater and each give water out or import department with hot equipment flow control device is set, this flow control device is an automatic or manual control valve.
3. economizer heat exchange system according to claim 1 is characterized in that: on first pipeline, second pipeline and between first and second pipelines flow switch is being set, this flow switch is a manually-operated gate.
4. economizer heat exchange system according to claim 1 is characterized in that: a bypass adjusting device is set between second pipeline and the 3rd pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232274 CN2622558Y (en) | 2003-06-18 | 2003-06-18 | Heat-exchange system for coal-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232274 CN2622558Y (en) | 2003-06-18 | 2003-06-18 | Heat-exchange system for coal-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622558Y true CN2622558Y (en) | 2004-06-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232274 Expired - Fee Related CN2622558Y (en) | 2003-06-18 | 2003-06-18 | Heat-exchange system for coal-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622558Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148705A (en) * | 2013-04-07 | 2013-06-12 | 杨群峰 | Afterheat integral utilization system for sulfuric acid production process |
| CN106196145A (en) * | 2016-06-28 | 2016-12-07 | 北京联创鼎新石化设备有限公司 | A kind of large-scale negative-pressure heating furnace air preheater and method |
| CN106582281A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Coal fired boiler low-load operation SCR denitration device and process thereof |
| CN107631287A (en) * | 2017-09-29 | 2018-01-26 | 苏州海陆重工股份有限公司 | The waterworks of boiler economizer |
| CN111059519A (en) * | 2019-11-07 | 2020-04-24 | 宋阳 | Flue gas waste heat steam injection boiler, method and system for producing high-pressure superheated steam |
| RU2825791C2 (en) * | 2022-05-18 | 2024-08-29 | Бэйцзин Аэроспейс Энерджи Консервейшн Энд Инвайроментал Протекшн Текнолоджи Ко., Лтд | Self-adapting heat recovery and utilization system with zero power consumption for ethylene production device |
-
2003
- 2003-06-18 CN CN 03232274 patent/CN2622558Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148705A (en) * | 2013-04-07 | 2013-06-12 | 杨群峰 | Afterheat integral utilization system for sulfuric acid production process |
| CN103148705B (en) * | 2013-04-07 | 2014-06-11 | 杨群峰 | Afterheat integral utilization system for sulfuric acid production process |
| CN106582281A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Coal fired boiler low-load operation SCR denitration device and process thereof |
| CN106196145A (en) * | 2016-06-28 | 2016-12-07 | 北京联创鼎新石化设备有限公司 | A kind of large-scale negative-pressure heating furnace air preheater and method |
| CN107631287A (en) * | 2017-09-29 | 2018-01-26 | 苏州海陆重工股份有限公司 | The waterworks of boiler economizer |
| CN111059519A (en) * | 2019-11-07 | 2020-04-24 | 宋阳 | Flue gas waste heat steam injection boiler, method and system for producing high-pressure superheated steam |
| RU2825791C2 (en) * | 2022-05-18 | 2024-08-29 | Бэйцзин Аэроспейс Энерджи Консервейшн Энд Инвайроментал Протекшн Текнолоджи Ко., Лтд | Self-adapting heat recovery and utilization system with zero power consumption for ethylene production device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |