CN108592004A - Economizer heat exchange regulating system - Google Patents
Economizer heat exchange regulating system Download PDFInfo
- Publication number
- CN108592004A CN108592004A CN201810666660.1A CN201810666660A CN108592004A CN 108592004 A CN108592004 A CN 108592004A CN 201810666660 A CN201810666660 A CN 201810666660A CN 108592004 A CN108592004 A CN 108592004A
- Authority
- CN
- China
- Prior art keywords
- economizer
- regulating system
- heat exchanger
- valve
- heating pipe
- 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
- 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
- F22D1/12—Control devices, e.g. for regulating steam temperature
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The problem of can not adjusting heat transfer effect for conventional economizer, the present invention provides economizer heat exchange regulating systems, can be under low-load-condition when boiler, economizer exit flue-gas temperature remains to meet demand.Its technical solution is such：Economizer heat exchange regulating system, it includes economizer, the economizer is equipped with import header and outlet header, it further includes heat exchanger, the heat exchanger is equipped with cold fluid inlet, cold fluid outlet, hot fluid inlet and hot fluid outlet ports, the cold fluid outlet is connect with the import header, and the outlet header is connected with heating pipe and discharge line, and the heating pipe is connect with the hot fluid inlet.
Description
Technical field
The present invention relates to boiler plant technical fields, specially economizer heat exchange regulating system.
Background technology
Economizer is used to absorb the heat of high-temperature flue gas, can reduce the exhaust gas temperature of flue gas, saves the energy.It is conventional to save coal
Device water is from import header into going out from outlet header, by making flue gas and water coke slurry heat, to reduce the temperature of flue gas.
Conventional economizer can not actively adjust economizer heat transfer effect, but the flue gas being discharged needs one once shaping
Fixed temperature, such as：The smoke temperature area requirement of outer 320~350 DEG C of the denitrification apparatus of stove, if boiler under low-load-condition, into
The flue-gas temperature for entering economizer is relatively low, then is exchanged heat by economizer, then economizer exit flue-gas temperature is less than boiler
The temperature for the flue gas being discharged by economizer under normal duty, causes to meet the requirements.
Invention content
The problem of can not adjusting heat transfer effect for conventional economizer, the present invention provides economizer exchange heat regulating system,
It can be in when boiler under low-load-condition, and economizer exit flue-gas temperature remains to meet demand.
Its technical solution is such：Economizer exchange heat regulating system comprising economizer, the economizer be equipped with into
Mouth header and outlet header, it is characterised in that：It further includes heat exchanger, and the heat exchanger is equipped with cold fluid inlet, cold fluid
Outlet, hot fluid inlet and hot fluid outlet ports, the cold fluid outlet are connect with the import header, the outlet header connection
There are heating pipe and discharge line, the heating pipe to be connect with the hot fluid inlet.
It is further characterized by：
Shut-off valve is installed on the heating pipe, regulating valve is installed on the discharge line；
Regulating valve is installed on the heating pipe；
Regulating valve or shut-off valve are installed on the discharge line；
The heat exchanger is specially tubular heat exchanger comprising the end socket of front and back end and the shell of centre, the end socket with
And the shell is separated by tube sheet, be welded on the tube sheet heat exchanger tube, the hot fluid outlet ports and the hot fluid into
Mouth is respectively arranged on the end socket of front and back end, and the cold fluid inlet and the cold fluid outlet are respectively arranged on the shell,
It is also equipped with baffle plate in the shell；
It is also arranged in parallel manual modulation valve door outside the regulating valve；
The discharge line is connect with the pipeline at the hot fluid outlet ports.
After with such a structure, by using heat exchanger using the hot water of economizer discharge to economizer will be entered
Cool water heating, reduce the temperature difference of fluid and flue gas in economizer, reduce the caloric receptivity of economizer, improve economizer exit flue gas
Temperature, to make to be under low-load-condition when boiler, economizer exit flue-gas temperature remains to meet demand；Further, by
It is certain in the hot fluid total amount of outlet header discharge, only it need to control hot fluid in heating pipe or discharge line by regulating valve
Flow, you can by regulating valve control into heat exchanger the high-temperature stream scale of construction, to control high temperature fluid and wait enter save coal
The heat exchange amount of device cold fluid, and then the fluid temperature of economizer to be entered is controlled, the temperature difference of fluid in economizer and flue gas is realized
Control reduces the caloric receptivity of economizer, improves economizer exit flue-gas temperature, to realize the mesh for adjusting economizer heat transfer effect
's.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is heat exchanger structure schematic diagram.
Specific implementation mode
Economizer heat exchange regulating system as shown in Figure 1 and Figure 2, wherein the fluid being passed through is water, water, which passes through, pumps pressurization entrance
This system comprising economizer 1, economizer are equipped with import header 1-1, outlet header 1-2, furnace wall 1-3, are installed on furnace wall 1-
The coiled pipe 1-4 connecting in 3 and with import header 1-1 and outlet header 1-2, further includes heat exchanger 2, and heat exchanger 2 has
Body is tubular heat exchanger comprising front-end end enclosure 2-1, rear end end socket 2-2 and the shell 2-3 of centre, two end sockets and shell
Body 2-3 is separated by tube sheet 2-4, and heat exchanger tube 2-5 is welded on tube sheet 2-4, and hot water outlet 3 and hot water inlet 4 are respectively arranged on
On front-end end enclosure 2-1 and rear end end socket 2-2, cooling water inlet 5 and cooling water outlet 6 are respectively arranged on shell 2-3, shell 2-3
It is inside also equipped with baffle plate 2-6, cooling water inlet 5 is connected to cooling water outlet 6 on heat exchanger 2, and cold water is flowed in 2 shell side of heat exchanger
Dynamic, hot water inlet 4 is connected to hot water outlet 3 on heat exchanger 2, and hot water is flowed in 2 tube side of heat exchanger, cooling water outlet 6 and import
Header 1-1 connections, outlet header 1-3 are connect by heating pipe 8 with hot water inlet 4, while being gone out with hot water by discharge line 9
Discharge water pipe at mouth 3 connects, and in the present embodiment, regulating valve 7 is set on discharge line 9, and heating pipe 8 is equipped with cut-off
Valve, regulating valve 7 are automatic regulating valve, uninterrupted are controlled as needed, to prevent from causing to adjust so with tune because of damage
Section valve 7 is connected in parallel to manual modulation valve door as spare, since the amount for the hot water being discharged from outlet header 1-2 is certain, passes through
It is i.e. controllable to adjust regulating valve 7；In addition it can also be respectively mounted regulating valve 7 on discharge line 9 and heating pipe 8, it can also be only
The installation and adjustment valve 7 on heating pipe 8 can reach the purpose for adjusting 1 heat transfer effect of economizer.
In the present embodiment, when boiler load is normal, close heating pipe 8 on shut-off valve, hot water be expelled directly out not into
Enter heat exchanger 2, economizer 1 works normally；When boiler load is small, by the way that hot water importing heat exchanger 2 heats cold water,
And hot water flow size into heat exchanger 2 being controlled by regulating valve 7 to adjust the temperature of cold water, cold water is from import header 1-1
Into economizer 1, since the temperature difference reduces, endothermic effect reduces, so the flue-gas temperature of discharge just improves, to meet needs；Separately
Outside, the inflow into heat exchanger 2 can be directly adjusted if regulating valve 7 is mounted on heating pipe 8, if load is just
Often, as long as also closing the water inlet into heat exchanger 2 by regulating valve 7.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any
It is familiar with the people of the technology within the technical scope disclosed by the invention, the change or replacement that can be readily occurred in should all be covered at this
Within the protection domain of invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (7)
- The regulating system 1. economizer exchanges heat comprising economizer, the economizer is equipped with import header and outlet header, special Sign is：It further includes heat exchanger, and the heat exchanger is equipped with cold fluid inlet, cold fluid outlet, hot fluid inlet and hot-fluid Body exports, and the cold fluid outlet is connect with the import header, and the outlet header is connected with heating pipe and discharge line, The heating pipe is connect with the hot fluid inlet.
- The regulating system 2. economizer according to claim 1 exchanges heat, it is characterised in that：It is equipped with and cuts on the heating pipe Only valve is equipped with regulating valve on the discharge line.
- The regulating system 3. economizer according to claim 1 exchanges heat, it is characterised in that：Tune is installed on the heating pipe Save valve.
- The regulating system 4. economizer according to claim 3 exchanges heat, it is characterised in that：Tune is installed on the discharge line Save valve or shut-off valve.
- 5. according to any economizer heat exchange regulating system of claim 1,2,3,4, it is characterised in that：The heat exchange utensil Body is tubular heat exchanger comprising the end socket of front and back end and the shell of centre, the end socket and the shell pass through pipe Plate separates, and is welded with heat exchanger tube on the tube sheet, the hot fluid outlet ports and the hot fluid inlet are respectively arranged on front and back end End socket on, the cold fluid inlet and the cold fluid outlet are respectively arranged on the shell, are also installed in the shell There is baffle plate.
- 6. according to any economizer heat exchange regulating system of claim 2,3,4, it is characterised in that：Outside the regulating valve also It has been arranged in parallel manual modulation valve door.
- 7. according to any economizer heat exchange regulating system of claim 1,2,3,4, it is characterised in that：The discharge line It is connect with the pipeline at the hot fluid outlet ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666660.1A CN108592004A (en) | 2018-06-26 | 2018-06-26 | Economizer heat exchange regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666660.1A CN108592004A (en) | 2018-06-26 | 2018-06-26 | Economizer heat exchange regulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108592004A true CN108592004A (en) | 2018-09-28 |
Family
ID=63633878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810666660.1A Pending CN108592004A (en) | 2018-06-26 | 2018-06-26 | Economizer heat exchange regulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108592004A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079247A1 (en) * | 2012-11-20 | 2014-05-30 | 上海锅炉厂有限公司 | Power station boiler economizer |
| CN103939884A (en) * | 2014-03-05 | 2014-07-23 | 东南大学 | Economizer improving SCR commissioning rate under low load working condition |
| CN103953913A (en) * | 2014-03-28 | 2014-07-30 | 上海发电设备成套设计研究院 | Heat-exchange adjustable economizer system for whole-process operation of denitration equipment |
| CN205037288U (en) * | 2015-10-10 | 2016-02-17 | 四川川润动力设备有限公司 | Boiler water supply system |
| CN206488296U (en) * | 2017-02-18 | 2017-09-12 | 华电国际电力股份有限公司技术服务中心 | A kind of boiler economizer grading plant |
| CN208475304U (en) * | 2018-06-26 | 2019-02-05 | 江苏太湖锅炉股份有限公司 | A kind of economizer heat exchange regulating system |
-
2018
- 2018-06-26 CN CN201810666660.1A patent/CN108592004A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079247A1 (en) * | 2012-11-20 | 2014-05-30 | 上海锅炉厂有限公司 | Power station boiler economizer |
| CN103939884A (en) * | 2014-03-05 | 2014-07-23 | 东南大学 | Economizer improving SCR commissioning rate under low load working condition |
| CN103953913A (en) * | 2014-03-28 | 2014-07-30 | 上海发电设备成套设计研究院 | Heat-exchange adjustable economizer system for whole-process operation of denitration equipment |
| CN205037288U (en) * | 2015-10-10 | 2016-02-17 | 四川川润动力设备有限公司 | Boiler water supply system |
| CN206488296U (en) * | 2017-02-18 | 2017-09-12 | 华电国际电力股份有限公司技术服务中心 | A kind of boiler economizer grading plant |
| CN208475304U (en) * | 2018-06-26 | 2019-02-05 | 江苏太湖锅炉股份有限公司 | A kind of economizer heat exchange regulating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107687634A (en) | The denitration of boiler full load couples fume afterheat gradient utilization system | |
| CN111981465A (en) | Flue gas waste heat utilization system | |
| CN107940439A (en) | A kind of boiler smoke heat energy recycling system | |
| CN206989172U (en) | The denitration of boiler full load couples fume afterheat gradient utilization system | |
| CN103808178B (en) | A kind of sub-control phase-change heat exchange system based on hierarchical composition heat exchange and heat-exchange method | |
| CN208475304U (en) | A kind of economizer heat exchange regulating system | |
| CN203744519U (en) | Multifunctional phase-change cooler | |
| CN108592004A (en) | Economizer heat exchange regulating system | |
| CN201387022Y (en) | Cold blast intermediate bypass low-temperature-corrosion resistant air pre-heater | |
| CN202002316U (en) | Built-in vacuum hot water boiler with condensing heat recovery | |
| CN104676250B (en) | Steam exhaust recycling and main pipe network dual-combination steam regulating system | |
| CN209196897U (en) | A kind of water-borne steam air heater winterization system in smoke waste heat utilization system | |
| CN202974001U (en) | Sub-control phase-change heat exchange system based on grading combined heat exchange | |
| CN206094137U (en) | Heat exchanger | |
| CN215112723U (en) | Temperature adjusting device for flue gas bypass heat exchange | |
| CN212361989U (en) | Flue gas waste heat utilization system | |
| CN210319981U (en) | System for utilize boiler of thermal power plant to arrange heat energy and heat electric precipitation body in succession | |
| US5361827A (en) | Economizer system for vapor generation apparatus | |
| CN210463080U (en) | Novel air heater system of coal fired power plant | |
| CN210035876U (en) | Novel waste heat conduction oil boiler | |
| CN209541005U (en) | A kind of heating and hot water two purpose formula electric appliance | |
| CN218864219U (en) | Air heater system for air preheater | |
| CN215113208U (en) | Condensed water heater module | |
| CN211695415U (en) | Double air inlet heat exchanger for condensing gas water heater | |
| CN216667774U (en) | Adjustable automatic heating device of gas pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |