CN202692782U - Flue gas heating device - Google Patents
Flue gas heating device Download PDFInfo
- Publication number
- CN202692782U CN202692782U CN 201220143931 CN201220143931U CN202692782U CN 202692782 U CN202692782 U CN 202692782U CN 201220143931 CN201220143931 CN 201220143931 CN 201220143931 U CN201220143931 U CN 201220143931U CN 202692782 U CN202692782 U CN 202692782U
- Authority
- CN
- China
- Prior art keywords
- cooler
- flue gas
- heater
- valve
- heating device
- 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
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a flue gas heating device which adopts an arrangement mode that a cooler is located at a low-position high-temperature flue gas inlet flue and a heater is located at a high-position low-temperature flue gas outlet flue. The flue gas is heated through passive flow of a working medium between the cooler and the heater. The temperature of the working medium at the outlet of the cooler is automatically determined by the vertical height of an arranged water discharge pipe. Forced circulation of a circulating pump is adopted when the flue gas heating device is started. The cooler and the heater adopt H-shaped finned pipes and spiral finned pipes or light pipes to form a medium flowing pipeline, and the medium flows in the pipes. The flue gas heating device is stable in operation, safe and electricity-saving, has good flue gas side corrosion prevention effect, and is particularly suitable for exhaust gas heating of flue gas desulfurization.
Description
Technical field
The utility model belongs to the power environment protection field, particularly relates to a kind of Smoke-heating device.
Background technology
In the fields such as electric power, metallurgy, chemical industry, building materials, the flue gas with sulfur dioxide that produces for qualified discharge, generally need to carry out flue gas desulfurization and process.Flue gas desulfurization technique makes flue gas through alkaline solution take wet method as main, and the sulfur dioxide in the flue gas is by solution absorption.Flue-gas temperature after the purification descends (abbreviation low-temperature flue gas), and the amount of moisture vapor is higher, and in the process process of smoke stack emission, owing to pressure drop, exothermic temperature descend, causing the steam Partial Conversion is drop, to the chimney corrosion.Chimney anticorrosion is an engineering that economy is very poor, reliability is not high, therefore adopt in a large number in the world the method for flue gas, utilization enters the heat of the desulfurizing tower flue gas (abbreviation high-temperature flue gas) that temperature is relatively high before, steam-laden wet flue gas heating after will purifying, so that its temperature surpasses about 15 ℃ of saturation temperatures, adopt again and do smoke stack emission.
Flue gas mainly contains dual mode at present, and a kind of is to utilize the swinging heater to heat, and another kind is to adopt tube heater to heat.The swinging heater is added device and is leaked out seriously because the temperature conditions restriction of heating causes its dust stratification very serious, therefore is difficult to long-time running.The swinging heater great majority that build up at present have been forced to remove, and change dried chimney into wet chimney through technological transformation, have also brought great economic pressures, and the reliability of the antiseptic project of wet chimney also receives much concern always simultaneously.The another kind of method that adopts tube heater to carry out flue gas is that the medium by closed cycle absorbs heat in high-temperature flue gas, then it is heated the low-temperature flue gas of desulfurizing tower outlet as heat medium.Because the temperature of flue gas is heated to more than 65 ℃, therefore the temperature of the medium of the low-temperature flue gas by desulfurizing tower outlet is higher, generally should be more than 85 ℃, and the temperature of high-temperature flue gas also only is about 140 ℃, therefore the medium of unit mass is all smaller at heat and low-temperature end liberated heat that temperature end absorbs, this just requires the flow of circulatory mediator very large, causes thus the power consumption of circulating pump very high.Simultaneously, because heat transfer temperature difference is less, therefore need to provide a large amount of heating surfaces, therefore its macroeconomic is not high, this has also limited the use of this technology.
This shows, above-mentioned existing Smoke-heating device obviously still has inconvenience and defective, and demands urgently further being improved in product structure, method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but have no for a long time applicable design is finished by development always, and common product and method do not have appropriate structure and method to address the above problem, and this obviously is the problem that the anxious wish of relevant dealer solves.Therefore how to found a kind of new Smoke-heating device, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing Smoke-heating device exists, and a kind of new Smoke-heating device is proposed, technical problem to be solved is to realize that carrying amount of heat heats flue gas, and heating process has realized non-active control, the heat of finishing high-temperature flue gas is low to the power consumption consumption that low-temperature flue gas shifts, and is very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to realize by the following technical solutions.According to a kind of Smoke-heating device that the utility model proposes, it comprises: constant pressure valve, Constant pressure tank, cooler, forced circulation feed pipe, circulating pump, forced circulation valve, working medium replenishment valve, non-active periodical feeding pipe, non-active circulating valve, heater, steam guiding tube, safety valve, discharge duct, draining valve and drainpipe; Wherein, described cooler is arranged on the high-temperature flue gas entry flue; Described heater is arranged on the low-temperature flue gas exhaust pass; Described steam guiding tube is communicated with described cooler and described heater up; Described non-active periodical feeding pipe is in parallel with described forced circulation feed pipe, and below be communicated with described cooler and described heater; Described non-active circulating valve is arranged on the described non-active periodical feeding pipe; Described circulating pump and described forced circulation valve are arranged on the described forced circulation feed pipe; One end of described forced circulation feed pipe also replenishes pipe with a working medium and links to each other by described working medium replenishment valve; Described Constant pressure tank is arranged at the top of described steam guiding tube, and is communicated with described steam guiding tube; The top of described Constant pressure tank is provided with described discharge duct, and described constant pressure valve and described safety valve are to be arranged at respectively on two blast pipes arranged side by side of described discharge duct; Described drainpipe is arranged at the below of described Constant pressure tank, and described draining valve is arranged on the described drainpipe.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Aforesaid Smoke-heating device, an end of wherein said steam guiding tube are to be connected with the entrance of the media flow pipeline of described heater, and its other end is to be connected with the outlet of the media flow pipeline of described cooler; Be to be connected with the outlet of the media flow pipeline of described heater by described non-active periodical feeding pipe with being connected an end of the parallel pipeline that the forced circulation feed pipe consists of, its other end is to be connected with the entrance of the media flow pipeline of described cooler.
Aforesaid Smoke-heating device, wherein said cooler and described heater are to adopt H type extended surface tube, spiral finned tube or light pipe to consist of the media flow pipeline of heater and cooler.
Aforesaid Smoke-heating device, wherein said cooler are to be arranged on the described high-temperature flue gas entry flue that is positioned at a desulfurizing tower low level; Described heater is to be arranged on the described low-temperature flue gas exhaust pass that is positioned at a described desulfurizing tower high position.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme, a kind of Smoke-heating device of the utility model has following advantages and beneficial effect at least:
1, the utility model has been realized the automatic flowing between cooler and the heater, and the work of system does not rely on pump, and reliability is high, and energy consumption is low;
2, the tube wall temperature of cooler of the present utility model is positioned at higher level automatically, has effectively suppressed the cold end corrosion of cooler pipeline in fume side;
3, the tube wall temperature of heater of the present utility model is positioned at higher level automatically, has effectively suppressed the corrosion of heater conduit;
4, the utility model effectively reduces the temperature of desulfurizing tower import flue gas, has saved the water consumption of desulfurization.
In sum, the utility model relates to a kind of Smoke-heating device, be that high-temperature flue gas entry flue, the heater that adopts cooler to be positioned at low level is positioned at the arrangement of high-order low-temperature flue gas exhaust pass, and make that working media is non-between cooler and heater actively to flow to heat flue gas.Wherein cooler outlet working media temperature is determined by the vertical highly automated of set drainpipe.The utility model adopts the circulating pump forced circulation when starting.Cooler of the present utility model and heater are to adopt H type extended surface tube, spiral finned tube or light pipe to consist of the media flow pipeline, and working medium is flowed in pipe.Of the present utility modelly operate steadily, safety, economize on electricity, have the good effect that prevents gas-side corrosion, be particularly useful for the exhaust heating of flue gas desulfurization.The utility model has significant progress technically, and has obvious good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of the utility model Smoke-heating device.
Fig. 2 is that the utility model is by the principle schematic of vertically highly determining cooler media flow pipeline exit working media temperature of drainpipe.
1: cooler 2: heater
3: steam guiding tube 4: non-active periodical feeding pipe
5: Constant pressure tank 6: discharge duct is forced
7: constant pressure valve 8: safety valve
9: drainpipe 10: draining valve
11: forced circulation feed pipe 12: circulating pump
13: forced circulation valve 14: non-active circulating valve
15: working medium replenishment valve 16: working medium is replenished pipe
17: high-temperature flue gas entry flue 18: the low-temperature flue gas exhaust pass
19: desulfurizing tower
The specific embodiment
Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of a kind of Smoke-heating device, structure, method, step, feature and the effect thereof that the utility model proposes, be described in detail as follows.
Relevant aforementioned and other technology contents of the present utility model, Characteristic can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation by the specific embodiment, should be to reach technological means and the effect that predetermined purpose takes to obtain one more deeply and concrete understanding to the utility model, yet appended graphic only provide with reference to the usefulness of explanation, the utility model is limited.
See also shown in Figure 1ly, Fig. 1 is the schematic diagram of the utility model Smoke-heating device.A kind of Smoke-heating device of the utility model preferred embodiment comprises: constant pressure valve 7, Constant pressure tank 5, cooler 1, forced circulation feed pipe 11, circulating pump 12, forced circulation valve 13, working medium replenishment valve 15, non-active periodical feeding pipe 4, non-active circulating valve 14, heater 2, steam guiding tube 3, safety valve 8, discharge duct 6, draining valve 10 and drainpipe 9.Wherein, cooler 1 is arranged on the high-temperature flue gas entry flue 17; Heater 2 is arranged on the low-temperature flue gas exhaust pass 18.Steam guiding tube 3 is communicated with cooler 1 and heater 2 up.Non-active periodical feeding pipe 4 is in parallel with forced circulation feed pipe 11, and below be communicated with cooler 1 and heater 2.Non-active circulating valve 14 is arranged on the non-active periodical feeding pipe 4.Circulating pump 12 and forced circulation valve 13 are arranged on the forced circulation feed pipe 11.Forced circulation feed pipe 11 also replenishes pipe 16 with a working medium and links to each other by working medium replenishment valve 15.Constant pressure tank 5 is arranged at the top of steam guiding tube 3, and is communicated with steam guiding tube 3.The top of Constant pressure tank 5 is provided with discharge duct 6.Constant pressure valve 7 and safety valve 8 are arranged at respectively on two blast pipes arranged side by side of discharge duct 6.Drainpipe 9 is arranged at the below of Constant pressure tank 5, and draining valve 10 is arranged on the drainpipe 9.Wherein an end of steam guiding tube 3 is to be connected with the entrance of the media flow pipeline of heater 2, and its other end is to be connected with the outlet of the media flow pipeline of cooler 1; Be to be connected with the outlet of the media flow pipeline of heater 2 and are connected an end of the parallel pipeline that consists of with the forced circulation feed pipe by non-active periodical feeding pipe 4, its other end is to be connected with the entrance of the media flow pipeline of cooler 1.
The utility model is that working media (hereinafter to be referred as working medium) is non-between cooler 1 and heater 2 actively to flow to heat flue gas by making.Particularly, flue gas method of the present utility model is to utilize that Temperature of Working rising density after cooler 1 heating diminishes, heater 2 cooled Temperature of Working decline density increase, and produce density contrast in heated side and cold side, and then mineralization pressure is poor, thereby overcome flow resistance, the flow through non-active method of working medium between fire end and colling end realized.
Its concrete course of work is described below:
At first, open working medium replenishment valve 15, make working medium replenish pipe 16 by working medium and enter; Simultaneously, open constant pressure valve 7, discharge air by discharge duct 6, finally make in all pipelines of device and the container to be full of working medium.Then, close working medium replenishment valve 15 and constant pressure valve 7, make working medium expanded by heating in cooler 1; Simultaneously, open draining valve 10, lay down working medium in the device by drainpipe 9, until drainpipe 9 can not arranged liquid refrigerant.
Owing to existing relation as shown in Figure 2 between the temperature of the vertical height of drainpipe 9 and the media flow pipeline exit working medium of cooler 1, the temperature that is the media flow pipeline exit working medium of the utility model cooler 1 depends on the pressure that device is interior, and the pressure in the device is then determined by the vertical highly automated of set drainpipe 9.Therefore the utility model can be by the temperature of vertically highly determining the media flow pipeline exit working medium of the corresponding cooler 1 of pressure Constant pressure tank 5 in when drainpipe 9 arrange not go out liquid refrigerant of drainpipe 9, thereby makes the temperature of the media flow pipeline exit working medium of cooler 1 reach the temperature that hope is controlled.
When drainpipe 9 is no longer discharged liquid refrigerant, close draining valve 10, consist of a non-active closed circuit by Constant pressure tank 5, cooler 1, non-active periodical feeding pipe 4, non-active circulating valve 14, heater 2 and steam guiding tube 3.Wherein, working medium is heated by high-temperature flue gas cooler 1 is interior, the steam-water twin phases mixture that produces flow to heater 2 automatically through steam guiding tube 3, in heater 2 interior working medium heat releases, the heating low-temperature flue gas, working medium self is cooled simultaneously, it is large that density becomes, under the effect of heavy position pressure head, automatically flow to cooler 1 through non-active periodical feeding pipe 4, again heated by high-temperature flue gas in cooler 1 interior working medium, enter into next circulation.
The utility model is when starting, because the non-active circulation between cooler 1 and the heater 2 is not set up, can start first circulating pump 12, consist of a forced circulation loop by Constant pressure tank 5, cooler 1, forced circulation feed pipe 11, open cycle pump 12, forced circulation valve 13, heater 2 and steam guiding tube 3.Wherein, working medium is interior by high-temperature flue gas heating heating at cooler 1, and heated working medium flow to heater 2 through steam guiding tube 3 under the pressure head effect of circulating pump 12, in heater 2 interior working medium heat releases, the heating low-temperature flue gas, working medium self is cooled simultaneously, flows to circulating pump 12, by circulating pump 12 pressurizations, flow to cooler 1 by forced circulation feed pipe 11 again, again heated by high-temperature flue gas in cooler 1 interior working medium, enter into next circulation.When the temperature of the media flow pipeline exit working medium of cooler 1 reaches the temperature of wishing control, stop circulating pump 12, switch to non-active circulation, opening water discharge valve 10 is by the working medium in drainpipe 9 dischargers, until drainpipe 9 can not arranged liquid refrigerant.
Security in order to ensure device is provided with safety valve 8 at Constant pressure tank 5.When because certain the unknown, such as the line clogging in installing, valve switch maloperation etc., when causing pressure in the device to raise.(be traditionally arranged to be 0.11MPa) when pressure is elevated to the set-pressure of safety valve 8, safety valve 8 is opened automatically, by discharge duct 6 pressure releases, thereby guarantees the security of whole device.
Cooler 1 of the present utility model and heater 2 can adopt H type extended surface tube, spiral finned tube or light pipe to consist of the media flow pipeline of heater and cooler.Working media in the utility model cooler 1 and the heater 2 can be the organic matters such as water or ammoniacal liquor.
As shown in Figure 1, the utility model can be used for a desulfurizing tower 19, and wherein cooler 1 is to be arranged on the high-temperature flue gas entry flue 17 that is positioned at desulfurizing tower 19 low levels; And heater 2 is to be arranged on the low-temperature flue gas exhaust pass 18 that is positioned at desulfurizing tower 19 high positions.
Working medium in the utility model Smoke-heating device can all be worked under liquid state, also can reduce by the method for venting after the heating pressure of device inside, thereby realize that automatically cooler 1 media flow pipeline exit working medium is in steam condition, and the temperature of this steam is the saturation temperature (constant) of working medium under the controlled pressure, and the tube wall temperature of control cooler 1 is positioned at higher level, to suppress cooler 1 pipeline in the cold end corrosion of fume side.
The Smoke-heating device that the utility model provides and flue gas method can make the heating effect of flue gas be guaranteed, and the device pressure be normal pressure, thereby make the security of device also obtain maximum assurance.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a Smoke-heating device is characterized in that it comprises: constant pressure valve (7), Constant pressure tank (5), cooler (1), forced circulation feed pipe (11), circulating pump (12), forced circulation valve (13), working medium replenishment valve (15), non-active periodical feeding pipe (4), non-active circulating valve (14), heater (2), steam guiding tube (3), safety valve (8), discharge duct (6), draining valve (10) and drainpipe (9); Wherein, described cooler (1) is arranged on the high-temperature flue gas entry flue (17); Described heater (2) is arranged on the low-temperature flue gas exhaust pass (18); Described steam guiding tube (3) is communicated with described cooler (1) and described heater (2) up; Described non-active periodical feeding pipe (4) is in parallel with described forced circulation feed pipe (11), and below be communicated with described cooler (1) and described heater (2); Described non-active circulating valve (14) is arranged on the described non-active periodical feeding pipe (4); Described circulating pump (12) and described forced circulation valve (13) are arranged on the described forced circulation feed pipe (11); One end of described forced circulation feed pipe (11) also replenishes pipe (16) with a working medium and links to each other by described working medium replenishment valve (15); Described Constant pressure tank (5) is arranged at the top of described steam guiding tube (3), and is communicated with described steam guiding tube (3); The top of described Constant pressure tank (5) is provided with described discharge duct (6), and described constant pressure valve (7) and described safety valve (8) are to be arranged at respectively on two blast pipes arranged side by side of described discharge duct (6); Described drainpipe (9) is arranged at the below of described Constant pressure tank (5), and described draining valve (10) is arranged on the described drainpipe (9).
2. Smoke-heating device according to claim 1, it is characterized in that: an end of wherein said steam guiding tube (3) is to be connected with the entrance of the media flow pipeline of described heater (2), and its other end is to be connected with the outlet of the media flow pipeline of described cooler (1); Be to be connected with the outlet of the media flow pipeline of described heater (2) by described non-active periodical feeding pipe (4) with being connected an end of the parallel pipeline that forced circulation feed pipe (11) consists of, its other end is to be connected with the entrance of the media flow pipeline of described cooler (1).
3. Smoke-heating device according to claim 1 is characterized in that: wherein said cooler (1) and described heater (2) are to adopt H type extended surface tube, spiral finned tube or light pipe to consist of the media flow pipeline of heater and cooler.
4. Smoke-heating device according to claim 1, it is characterized in that: wherein said cooler (1) is to be arranged on the described high-temperature flue gas entry flue (17) that is positioned at a desulfurizing tower (19) low level; Described heater (2) is to be arranged to be positioned on the high-order described low-temperature flue gas exhaust pass (18) of described desulfurizing tower (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143931 CN202692782U (en) | 2012-04-09 | 2012-04-09 | Flue gas heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143931 CN202692782U (en) | 2012-04-09 | 2012-04-09 | Flue gas heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692782U true CN202692782U (en) | 2013-01-23 |
Family
ID=47548390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220143931 Expired - Fee Related CN202692782U (en) | 2012-04-09 | 2012-04-09 | Flue gas heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721305A (en) * | 2012-04-09 | 2012-10-10 | 舒少辛 | Flue gas heating device and flue gas heating method |
-
2012
- 2012-04-09 CN CN 201220143931 patent/CN202692782U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721305A (en) * | 2012-04-09 | 2012-10-10 | 舒少辛 | Flue gas heating device and flue gas heating method |
| CN102721305B (en) * | 2012-04-09 | 2016-08-17 | 舒少辛 | A kind of Smoke-heating device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102997267B (en) | Smoke reheating device of combining phase-change heat exchanger with net gas heater | |
| EP3456398A1 (en) | Flue gas condensation water extraction system | |
| CN103691260B (en) | Heat recovery water-saving system for desulfuration by wet process and process thereof | |
| CN104474849A (en) | Acid regeneration acid gas absorption and exhaust emission reduction system and utilization method thereof | |
| CN108722124A (en) | The integral system and method for fair and clearization and waste heat recovery are taken off for smoke multistage | |
| CN105222146A (en) | A kind of flue gas waste heat recovery apparatus | |
| CN205065770U (en) | Flue gas waste heat recovery device | |
| CN208727128U (en) | The integral system of fair and clearization and waste heat recycling is taken off for smoke multistage | |
| CN203744221U (en) | Emission reduction system for smoke and dust of power plant boiler | |
| CN102213438A (en) | Smoke exhaust system for realizing energy conservation by using coal-fired boiler flue-gas waste heat recovery and water conservation by using wet desulphurization | |
| CN105536482A (en) | Asphalt fume treatment device for asphalt modifying process | |
| CN203100463U (en) | Waste heat recycling device for titanium dioxide calcining tail gas | |
| CN105020734A (en) | Method and device for recycling smoke waste heat | |
| CN202692782U (en) | Flue gas heating device | |
| CN204042853U (en) | Steam boiler waste heat reclaims and system for deoxidizing by heat power | |
| CN205361039U (en) | Modified for technology pitch smoke treatment device of pitch | |
| CN203177284U (en) | Terrestrial heat source and gas combined type heating supply system | |
| CN206257687U (en) | A kind of combined steam flue gas MGGH systems | |
| CN204514141U (en) | Split type long-service life high-efficiency phase-change heat-exchanger | |
| CN103836609A (en) | Power station boiler flue gas and dust emission reduction system | |
| CN102078855A (en) | Drying residual-heat utilization device of large-scale automobile coating production line | |
| CN202660525U (en) | Composite phase-change heat exchange system | |
| CN102721305A (en) | Flue gas heating device and flue gas heating method | |
| CN204214285U (en) | The residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver | |
| CN203177670U (en) | Waste heat utilization device of tail low-temperature smoke of sinter cooler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130409 |