CN107388228A - A kind of waste heat boiler afterbody heat exchanger system - Google Patents
A kind of waste heat boiler afterbody heat exchanger system Download PDFInfo
- Publication number
- CN107388228A CN107388228A CN201710784490.2A CN201710784490A CN107388228A CN 107388228 A CN107388228 A CN 107388228A CN 201710784490 A CN201710784490 A CN 201710784490A CN 107388228 A CN107388228 A CN 107388228A
- Authority
- CN
- China
- Prior art keywords
- water
- heat exchanger
- valve
- inlet end
- low
- 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
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000003245 coal Substances 0.000 claims abstract description 32
- 239000003517 fume Substances 0.000 claims abstract description 31
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 23
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 230000002045 lasting effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
Abstract
The present invention provides a kind of waste heat boiler afterbody heat exchanger system, including oxygen-eliminating device and condenser, the condenser is provided with condensate pump, the system also includes low-pressure coal saver, fume hot-water heat exchanger and bromine cooling machine, the water side of the condensate pump connects the water inlet end of low-pressure coal saver by a valve, the water side of low-pressure coal saver connects oxygen-eliminating device by a valve, the water side of the fume hot-water heat exchanger connects the water inlet end of bromine cooling machine by a valve, the water side of bromine cooling machine connects the water inlet end of fume hot-water heat exchanger by a valve, the water side of the fume hot-water heat exchanger connects the water inlet end of low-pressure coal saver by a valve, the water side of the condensate pump connects the water inlet end of fume hot-water heat exchanger by a valve.The present invention is not only advantageous to the safe operation of unit, while also can effectively utilize fume afterheat, improves capacity usage ratio, improves the economy of power plant.
Description
Technical field
The present invention relates to a kind of waste heat boiler field, more particularly, to a kind of waste heat boiler afterbody heat exchanger system.
Background technology
In the Distribution of Natural formula energy project of routine, waste heat boiler afterbody heat exchanger system has two kinds of plans of establishment：
(1) waste heat boiler afterbody sets low-pressure coal saver and independent hot water heat exchanger (to produce hot water and be mainly used in bromine cooling machine respectively
Refrigeration or the use of direct heating water), (2) waste heat boiler afterbody sets expansion type low-pressure coal saver, and coal is saved from expansion type low pressure
Hot water is taken out among device to use (hot water goes bromine cooling machine refrigeration or the use of direct heating water).
The problem of certain all be present in both the above system.
Scheme (1), when the operation of unit pure condensate operating mode does not need hot water, this grade of independent hot water heat exchanger is in dry combustion method shape
State, it is unfavorable for the safe operation of unit, while can not effectively utilizes fume afterheat, causes energy utilization insufficient, waste heat pot
Stove exhaust gas temperature raises.Scheme (1) system connection diagram is as shown in Figure 1.
Scheme (2), in supplying thermal condition, it is necessary to draw from low-pressure coal saver is expanded all the way outside hot water for (being used for by the hot water
Bromine cooling machine is gone to freeze), but because hot-water type bromine cooling machine needs heat hydraulic pressure relatively low, and expand heat hydraulic pressure in low-pressure coal saver
(condensation water pressure) mismatches, and hot water needs lasting decompression to enter hot-water type bromine cooling machine, then again by the liter of booster
Low-pressure economizer system is returned again to after pressure, the process can cause lasting energy loss, station service increase.Scheme (2) system connects
Connect schematic diagram as shown in Figure 2.
The content of the invention
It is an object of the invention to：A kind of the problem of existing for prior art, there is provided waste heat boiler afterbody heat exchanger system
System, solves the problems, such as that existing system energy utilization is insufficient.
The goal of the invention of the present invention is achieved through the following technical solutions：
A kind of waste heat boiler afterbody heat exchanger system, including oxygen-eliminating device and condenser, the condenser are provided with condensate pump,
The system also includes low-pressure coal saver, fume hot-water heat exchanger and bromine cooling machine, and the water side of the condensate pump passes through a valve
The water inlet end of door connection low-pressure coal saver, the water side of low-pressure coal saver connect oxygen-eliminating device, the flue gas heat by a valve
The water side of water- to-water heat exchanger connects the water inlet end of bromine cooling machine by a valve, and the water side of bromine cooling machine is connected by a valve
The water inlet end of fume hot-water heat exchanger, the water side of the fume hot-water heat exchanger connect low-pressure coal saver by a valve
Water inlet end, the water side of the condensate pump connect the water inlet end of fume hot-water heat exchanger by a valve.
Preferably, the bromine cooling machine is hot-water type bromine cooling machine.
Preferably, the valve that is connected between the water side of the fume hot-water heat exchanger and the water inlet end of low-pressure coal saver with
A check-valves is provided between the water inlet end of low-pressure coal saver.
Preferably, the valve that is connected between the water inlet end of the water side of the condensate pump and fume hot-water heat exchanger with
A check-valves is provided between the water inlet end of fume hot-water heat exchanger.
Compared with prior art, the present invention is switched when the operation of unit pure condensate operating mode does not need hot water by system, will be low
Pressure economizer and independent hot water heat exchanger are together in series, and condensate first passes through independent hot water heat exchanger, equivalent to expanding
Low-pressure coal saver, flue gas heat is taken full advantage of, improve low-pressure steam yield, increase generated energy, reduce exhaust gas temperature, improve energy
Source utilization ratio.When unit supplying thermal condition is run, switched by system, by low-pressure coal saver and independent hot water heat exchanger two
Individual isolation of system is opened, independent operating, is avoided energy loss caused by hot water needs lasting decompression, is reduced station service power consumption rate.
Brief description of the drawings
Fig. 1 is that waste heat boiler afterbody sets low-pressure coal saver and independent hot water heat exchanger system diagram respectively；
Fig. 2 is that waste heat boiler afterbody sets expansion low-pressure economizer system figure respectively；
Fig. 3 is the waste heat boiler afterbody heat exchanger system figure of the present invention.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Referring to as shown in figure 3, the present invention provides a kind of waste heat boiler afterbody heat exchanger system, suitable for all waste heat boilers
Afterbody heat exchanger system.Existing afterheat boiler system includes high-pressure superheater, high pressure evaporator, high-pressure economizer, low pressure mistake
Hot device, low pressure additional issue device, take out the parts such as condensing turbine, condenser.Condenser is provided with condensate pump.The present invention is to waste heat boiler
Afterbody heat exchanger system is improved, and sets low-pressure coal saver, fume hot-water heat exchanger and bromine cooling machine：The water side of condensate pump
The water inlet end of low-pressure coal saver is connected by a valve, the water side of low-pressure coal saver connects oxygen-eliminating device by a valve；
The water side of fume hot-water heat exchanger connects the water inlet end of bromine cooling machine by a valve, and the water side of bromine cooling machine passes through a valve
The water inlet end of door connection fume hot-water heat exchanger；The water side of fume hot-water heat exchanger connects low-pressure coal saver by a valve
Water inlet end；The water side of condensate pump connects the water inlet end of fume hot-water heat exchanger by a valve.
When the operation of unit pure condensate operating mode does not need hot water, switched by system, by low-pressure coal saver and independent hot water
Heat exchanger is together in series, and condensate first passes through independent hot water heat exchanger, equivalent to low-pressure coal saver is expanded, takes full advantage of
Flue gas heat, low-pressure steam yield is improved, increase generated energy, reduce exhaust gas temperature, improve efficiency of energy utilization.In unit heat supply
When operating mode is run, switched by system, low-pressure coal saver and independent hot water heat exchanger two systems are kept apart, independent fortune
OK, avoiding hot water needs energy loss caused by lasting decompression, reduction station service power consumption rate.
In the present embodiment, bromine cooling machine uses hot-water type bromine cooling machine.
Embodiment 2
As described in Figure 3, in the present embodiment, between the water side of fume hot-water heat exchanger and the water inlet end of low-pressure coal saver
A check-valves is provided between the valve of connection and the water inlet end of low-pressure coal saver.The water side of condensate pump is changed with fume hot-water
A check-valves is provided between the valve and the water inlet end of fume hot-water heat exchanger that are connected between the water inlet end of hot device.Check-valves is set
It may be such that the operation that the system can be more stable.
The present embodiment remainder is consistent with embodiment 1.
The contrast table of the present embodiment and conventional scheme is as follows：
Being contrasted from table, the present invention is not only advantageous to the safe operation of unit, while also can effectively utilize fume afterheat,
Capacity usage ratio is improved, improves the economy of power plant.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (4)
1. a kind of waste heat boiler afterbody heat exchanger system, including oxygen-eliminating device and condenser, the condenser is provided with condensate pump, its
It is characterised by, the system also includes low-pressure coal saver, fume hot-water heat exchanger and bromine cooling machine, and the water side of the condensate pump leads to
The water inlet end of a valve connection low-pressure coal saver is crossed, the water side of low-pressure coal saver connects oxygen-eliminating device, institute by a valve
The water side for stating fume hot-water heat exchanger connects the water inlet end of bromine cooling machine by a valve, and the water side of bromine cooling machine passes through one
Valve connects the water inlet end of fume hot-water heat exchanger, and the water side of the fume hot-water heat exchanger connects low pressure by a valve
The water inlet end of economizer, the water side of the condensate pump connect the water inlet end of fume hot-water heat exchanger by a valve.
2. a kind of waste heat boiler afterbody heat exchanger system according to claim 1, it is characterised in that the bromine cooling machine is heat
Water type bromine cooling machine.
3. a kind of waste heat boiler afterbody heat exchanger system according to claim 1, it is characterised in that the fume hot-water changes
One is provided between the valve and the water inlet end of low-pressure coal saver that are connected between the water side of hot device and the water inlet end of low-pressure coal saver
Check-valves.
4. a kind of waste heat boiler afterbody heat exchanger system according to claim 1, it is characterised in that the condensate pump
Water side and fume hot-water heat exchanger water inlet end between set between the valve that connects and the water inlet end of fume hot-water heat exchanger
There is a check-valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784490.2A CN107388228A (en) | 2017-09-04 | 2017-09-04 | A kind of waste heat boiler afterbody heat exchanger system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710784490.2A CN107388228A (en) | 2017-09-04 | 2017-09-04 | A kind of waste heat boiler afterbody heat exchanger system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107388228A true CN107388228A (en) | 2017-11-24 |
Family
ID=60349071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710784490.2A Pending CN107388228A (en) | 2017-09-04 | 2017-09-04 | A kind of waste heat boiler afterbody heat exchanger system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107388228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060796A (en) * | 2021-11-02 | 2022-02-18 | 中国船舶重工集团公司第七0三研究所 | Take exhaust-heat boiler extension economizer system of one-level deoxidization heat source |
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|---|---|---|---|---|
| CN102650431A (en) * | 2011-02-26 | 2012-08-29 | 刘长征 | Stepped recycle method for residual heat of fuel gas |
| CN103939932A (en) * | 2014-04-28 | 2014-07-23 | 中冶华天工程技术有限公司 | Blast furnace gas boiler flue gas waste heat deep recycling system |
| CN203731368U (en) * | 2013-12-31 | 2014-07-23 | 华电电力科学研究院 | Device for deep recovery of smoke discharge waste heat of waste heat boiler |
| CN104457297A (en) * | 2014-11-26 | 2015-03-25 | 上海宝钢节能环保技术有限公司 | Sintering waste heat recovery method and system |
| CN104676972A (en) * | 2015-03-12 | 2015-06-03 | 中国科学院工程热物理研究所 | Soil source-air source wind energy heat pump system and control method thereof |
| CN204404812U (en) * | 2014-11-26 | 2015-06-17 | 上海宝钢节能环保技术有限公司 | A kind of sintering waste heat recovery system |
| CN104832902A (en) * | 2015-03-09 | 2015-08-12 | 章礼道 | 720 DEG C high-efficiency supercritical secondary reheat steam turbine set optimization scheme |
| CN204786338U (en) * | 2015-06-24 | 2015-11-18 | 广东电网有限责任公司电力科学研究院 | Changeable fiery power plant boiler flue gas waste heat utilization system of water side connected mode |
| CN207162510U (en) * | 2017-09-04 | 2018-03-30 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of waste heat boiler afterbody heat exchanger system |
-
2017
- 2017-09-04 CN CN201710784490.2A patent/CN107388228A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650431A (en) * | 2011-02-26 | 2012-08-29 | 刘长征 | Stepped recycle method for residual heat of fuel gas |
| CN203731368U (en) * | 2013-12-31 | 2014-07-23 | 华电电力科学研究院 | Device for deep recovery of smoke discharge waste heat of waste heat boiler |
| CN103939932A (en) * | 2014-04-28 | 2014-07-23 | 中冶华天工程技术有限公司 | Blast furnace gas boiler flue gas waste heat deep recycling system |
| CN104457297A (en) * | 2014-11-26 | 2015-03-25 | 上海宝钢节能环保技术有限公司 | Sintering waste heat recovery method and system |
| CN204404812U (en) * | 2014-11-26 | 2015-06-17 | 上海宝钢节能环保技术有限公司 | A kind of sintering waste heat recovery system |
| CN104832902A (en) * | 2015-03-09 | 2015-08-12 | 章礼道 | 720 DEG C high-efficiency supercritical secondary reheat steam turbine set optimization scheme |
| CN104676972A (en) * | 2015-03-12 | 2015-06-03 | 中国科学院工程热物理研究所 | Soil source-air source wind energy heat pump system and control method thereof |
| CN204786338U (en) * | 2015-06-24 | 2015-11-18 | 广东电网有限责任公司电力科学研究院 | Changeable fiery power plant boiler flue gas waste heat utilization system of water side connected mode |
| CN207162510U (en) * | 2017-09-04 | 2018-03-30 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of waste heat boiler afterbody heat exchanger system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060796A (en) * | 2021-11-02 | 2022-02-18 | 中国船舶重工集团公司第七0三研究所 | Take exhaust-heat boiler extension economizer system of one-level deoxidization heat source |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |
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| RJ01 | Rejection of invention patent application after publication |