CN202561794U - Intelligent full-automatic air heater - Google Patents
Intelligent full-automatic air heater Download PDFInfo
- Publication number
- CN202561794U CN202561794U CN2012201294441U CN201220129444U CN202561794U CN 202561794 U CN202561794 U CN 202561794U CN 2012201294441 U CN2012201294441 U CN 2012201294441U CN 201220129444 U CN201220129444 U CN 201220129444U CN 202561794 U CN202561794 U CN 202561794U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- flue gas
- side heat
- settle
- trunk line
- 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
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Classifications
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- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to an intelligent full-automatic air heater which comprises a flue gas inlet pipe, a flue gas outlet pipe and a water inlet valve. A flue-gas-side heat exchanger is arranged between the flue gas inlet pipe and the flue gas outlet pipe and is further connected with a main pipeline, a circulating water pump is connected onto the main pipeline, a flue gas component analyzer is arranged on the flue gas inlet pipe, a flue temperature sensor is arranged on the flue gas outlet pipe, a plate heat exchanger and a drain pipe are respectively arranged above the flue-gas-side heat exchanger and positioned on two sides of the main pipeline, a drain valve is arranged on the drain pipe, an adjusting valve is further arranged on one side of an inlet of the plate heat exchanger, the water inlet valve is arranged on a low-temperature condensation water inlet pipe connected with the main pipeline, a first water pipe temperature sensor and a second water pipe temperature sensor are further respectively arranged on the main pipeline of the drain pipe, an air-side heat exchanger is connected to the top of the main pipeline, and a variable-frequency air feeder is connected to one side of the air-side heat exchanger.
Description
Technical field
The utility model relates to a kind of Industrial Boiler low-temperature waste heat reclaimer, relates in particular to the structure of this reclaimer.
Background technology
Along with the continuous aggravation of global energy shortage and problem of environmental pollution, energy-saving and emission-reduction have become a present vital task of national government.Premier Wen Jiabao is Special attention will be given in the national energy-saving and emission-reduction work teleconference in this year also: be conscientiously energy-saving and emission-reduction as the vital task of strengthening macro-control, adjust economic structure, transforming the mode of development; In line with to country, to the people, the spirit highly responsible to history; Be determined; The strength of Hua Gengda is put in bigger effort, and guarantees to realize the Eleventh Five-Year Plan target for energy-saving and emission-reduction.
Have middle-size and small-size fuel oil, combustion gas and the coal-burned industrial boiler of One's name is legion in the city, be used in public places such as business office building, hotel, hospital.The common single-machine capacity of this type boiler is little, and exhaust gas temperature is higher, and heat loss due to exhaust gas is big, and boiler efficiency is low.But because operating cost proportion is little, do not cause boiler holder's care, because of the custom thinking of market economy, do not cause the attention of government administration section again yet, or do not propose clear and definite energy-conservation requirement.
Compare abroad, China's industry coal-boiler exists fuel composition to change greatly, the general phenomenon on the low side of service efficiency.Therefore, the energy-saving potential of Industrial Boiler is very big.If numerous Industrial Boilers is all taked the effective energy-saving measure; As reduce flue gas loss the Waste Heat Recovery of flue gas is used for heating boiler feedwater or heating boiler air-supply; Even on existing basis, make boiler efficiency improve two to three percentage points, the energy-conservation value of the Industrial Boiler in a city is very considerable.This is energy-conservation, the GHG emissions mitigation of response government, the effective practical action that the protection environment is called.Middle-size and small-size Industrial Boiler occupies very big proportion in the urban industry boiler.
The exhaust gas temperature of common middle-size and small-size Industrial Boiler is higher, and particularly fuel oil, gas fired-boiler exhaust gas temperature can reach about about 200 ℃, and exhaust gas temperature is dropped to below 130 ℃, can save the energy and can improve five percentage points of boiler efficiencies.But exhaust gas temperature is dropped to this temperature levels, also should avoid consequential cold end corrosion.
Summary of the invention
The utility model technical issues that need to address have provided a kind of intelligent full-automatic air heater, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
The utility model comprises: flue gas inlet tube and smoke outlet tube; Between described flue gas inlet tube and smoke outlet tube, settle a fume side heat exchanger; Described fume side heat exchanger also connects a trunk line; On described trunk line, connect a water circulating pump; On described flue gas inlet tube, settle an exhaust gas components analyzer; On described smoke outlet tube, settle a flue temperature sensor; Above described fume side heat exchanger, the trunk line both sides settle plate type heat exchanger and drainpipe respectively; On described drainpipe, settle a drain valve; Import one side at said plate type heat exchanger is also settled a control valve; Also comprise: water intaking valve; Described water intaking valve is placed on the cryogenic temperature condensation water inlet pipe that links to each other with trunk line; On described drainpipe trunk line, also settle the first conduit temperature sensor and the second conduit temperature sensor respectively; Connect an air side heat exchanger on described trunk line top; Side at said air side heat exchanger connects a frequency conversion pressure fan.
Compared with prior art, the beneficial effect of the utility model is: exhaust gas temperature is controlled, get into heat exchanger working medium Controllable Temperature, amount of energy saving, discharge capacity can calculate, and can effectively prevent the generation of cold end corrosion phenomenon.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
Visible by Fig. 1: the utility model comprises: flue gas inlet tube 15 and smoke outlet tube 16; Between described flue gas inlet tube 15 and smoke outlet tube 16, settle a fume side heat exchanger 12; Described fume side heat exchanger 12 also connects a trunk line 17; On described trunk line 17, connect a water circulating pump 11; On described flue gas inlet tube 15, settle an exhaust gas components analyzer 1; On described smoke outlet tube 16, settle a flue temperature sensor 8; Above described fume side heat exchanger 12, trunk line 17 both sides settle plate type heat exchanger 14 and drainpipe 18 respectively; On described drainpipe 18, settle a drain valve 2; Import one side at said plate type heat exchanger 14 is also settled a control valve 7; Also comprise: water intaking valve 6; Described water intaking valve 6 is placed on the cryogenic temperature condensation water inlet pipe 19 that links to each other with trunk line 17; On described drainpipe trunk line 17, also settle the first conduit temperature sensor 4 and the second conduit temperature sensor 5 respectively; Connect an air side heat exchanger 13 on described trunk line top; Side at said air side heat exchanger 13 connects a frequency conversion pressure fan 3.
The utility model control principle is:
In flue gas inlet tube, install the fume component analysis appearance additional; Each association that master controller 10 (as shown in Figure 1) records according to the fume component analysis appearance in real time; Calculate the setting value of real-time flue gas acid dew point temperature and definite T1 (being fume side interchanger import working medium temperature), the temperature requirement of T1 is set greater than acid dew-point temperature here.When said acid dew point is meant the sulphur-containing substance burning, can partly generate sulfur trioxide, sulfur trioxide and water form sulfuric acid, and under than the high temperature of normal dew point, sulfuric acid is in a liquid state and separates out, and temperature is at this moment claimed acid dew point.The strong corrosion of heat-transfer area or metal covering suffered sulfuric acid under this temperature is claimed cold end corrosion or acid dew piont corrosion.In the utility model, when the fuel composition of boiler changes, but the composition of automatic diagnosis flue gas confirming the real-time acid dew-point temperature of flue gas, thereby adjust the setting value of T1 automatically, avoid cold end corrosion.System is provided with frequency conversion pressure fan and condensed water in high temperature supplementary device, integrates functions such as temperature adjustment, control, and when boiler load changed, T1 (the working medium temperature of fume side interchanger import) remained unchanged.
T1 is regulated by frequency conversion pressure fan VSD and control valve M2 jointly, makes T1 be stabilized in setting value.
If exhaust gas temperature flue temperature sensor T3 is greater than setting value, and the frequency of then heightening VSD makes T3 be stabilized in setting value to increase new wind flow.Otherwise then turn down the frequency of VSD, reduce new wind flow and make T3 be stabilized in setting value.
Adopt the utility model, the user can directly obtain actual amount of energy saving in computer work 9 (as shown in Figure 1).(for example: actual economize on coal, the CER of fuel-economizing, solar term and carbon dioxide); Adopt the utility model; Into and out of the working medium temperature of heat exchanger (referring to fume side and the air side heat exchanger) temperature that all do not reach capacity, fouling and clogging phenomenon can not appear after the use.
The flow process of the utility model is: systematic working medium gets into, and its flow is controlled by water intaking valve M1.After import working medium enters into system; The temperature that gets into the heat exchanger of fume side through circulating pump is T1; Heat exchanger (being meant fume side and air side heat exchanger) adopts the helix fin tubular type; Compact conformation, it is little to take up space, and is fit to very much the narrow and small user's of most of medium small boiler back-end ductwork installing spaces demand; Gas approach is provided with flue gas analyzer, calculating the acid dew point of different flue gases, and sends instruction to VSD and M2; T1 is regulated by VSD and control valve M2 jointly, makes T1 be stabilized in setting value (this setting value is greater than acid dew point); Temperature to outlet behind the flue gas process fume side heat exchanger becomes T3 (being exhaust gas temperature).The outlet working medium temperature of coming out from the fume side heat exchanger becomes T2, and gets into the air side heat exchanger, thereby reaches the purpose of the temperature of a wind of heating boiler.All above processes, and the action of each parts are carried out automated intelligent control by master controller and computer work, to realize whole flow process unmanned.
Claims (1)
1. an intelligent full-automatic air heater comprises: flue gas inlet tube and smoke outlet tube; It is characterized in that: between described flue gas inlet tube and smoke outlet tube, settle a fume side heat exchanger; Described fume side heat exchanger also connects a trunk line; On described trunk line, connect a water circulating pump; On described flue gas inlet tube, settle an exhaust gas components analyzer; On described smoke outlet tube, settle a flue temperature sensor; Above described fume side heat exchanger, the trunk line both sides settle plate type heat exchanger and drainpipe respectively; On described drainpipe, settle a drain valve; Import one side at said plate type heat exchanger is also settled a control valve; Also comprise: water intaking valve; Described water intaking valve is placed on the cryogenic temperature condensation water inlet pipe that links to each other with trunk line; On described drainpipe trunk line, also settle the first conduit temperature sensor and the second conduit temperature sensor respectively; Connect an air side heat exchanger on described trunk line top; Side at said air side heat exchanger connects a frequency conversion pressure fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201294441U CN202561794U (en) | 2012-03-30 | 2012-03-30 | Intelligent full-automatic air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201294441U CN202561794U (en) | 2012-03-30 | 2012-03-30 | Intelligent full-automatic air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561794U true CN202561794U (en) | 2012-11-28 |
Family
ID=47211446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201294441U Expired - Fee Related CN202561794U (en) | 2012-03-30 | 2012-03-30 | Intelligent full-automatic air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561794U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047675A (en) * | 2013-01-17 | 2013-04-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
| CN103148219A (en) * | 2013-03-04 | 2013-06-12 | 章礼道 | Intelligent adjustable and flexible sealing system for rotary type air pre-heater |
| CN104214783A (en) * | 2014-09-19 | 2014-12-17 | 王惠生 | Constant-temperature smoke exhaust control method and device in incineration process |
-
2012
- 2012-03-30 CN CN2012201294441U patent/CN202561794U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047675A (en) * | 2013-01-17 | 2013-04-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
| CN103047675B (en) * | 2013-01-17 | 2015-06-17 | 张志宇 | Flue gas waste heat utilization device and method of boiler water heat medium controlling circulating type air preheater |
| CN103148219A (en) * | 2013-03-04 | 2013-06-12 | 章礼道 | Intelligent adjustable and flexible sealing system for rotary type air pre-heater |
| CN104214783A (en) * | 2014-09-19 | 2014-12-17 | 王惠生 | Constant-temperature smoke exhaust control method and device in incineration process |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20170330 |