CN204026646U - A kind of low temperature boiler smoke heat recovery cooling arrangement - Google Patents
A kind of low temperature boiler smoke heat recovery cooling arrangement Download PDFInfo
- Publication number
- CN204026646U CN204026646U CN201420454262.0U CN201420454262U CN204026646U CN 204026646 U CN204026646 U CN 204026646U CN 201420454262 U CN201420454262 U CN 201420454262U CN 204026646 U CN204026646 U CN 204026646U
- Authority
- CN
- China
- Prior art keywords
- tube bank
- fluoroplastics
- steel pipe
- pipe bundle
- restrained
- 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.)
- Active
Links
Abstract
The utility model describes a kind of low temperature boiler smoke heat recovery cooling arrangement, comprises housing, carbon steel tube bank, ND steel pipe bundle, fluoroplastics tube bank, inlet flue duct, tube bank outlet header, tube bank inlet header and exhaust pass; Tube bank outlet header is restrained with carbon steel and is connected, and tube bank inlet header is restrained with fluoroplastics and is connected; Carbon steel tube bank is connected with ND steel pipe bundle; ND steel pipe bundle is restrained with fluoroplastics and is connected; Inlet flue duct and exhaust pass are connected to housing two ends.Namely the utility model adopts fluoroplastics tube bank smooth surface less scaling, has extremely strong corrosion resistance, effectively can prevent low-temperature-acid-corrosion; Fume afterheat can be utilized to greatest extent, improve Unit Economic type; And the problem that the tube bank of traditional stainless steel runs the heat transfer efficiency after a period of time sharply reduce because heavy corrosion causes can be solved; Effectively can save the energy in thermal power plant, improve unit efficiency, reduce electricity consumption in factory, and in saving coal consumption, water saving aspect there is remarkable result.
Description
Technical field
The utility model relates to boiler smoke heat exchanger field, is specifically related to a kind of low temperature boiler smoke heat recovery cooling arrangement.
Background technology
Low temperature boiler smoke heat recovery cooler is a kind of equipment cooled for heat power plant boiler flue gas waste heat recovery recycling and flue gas, be arranged between air preheater and deduster, discharge flue gas heat by recovery boiler and carry out heating boiler feed water to realize and cooled flue gas.Heat loss, fuel saving, raising boiler efficiency can be reduced.Discharge in flue gas due to boiler and comprise SO
3and SO
2dust, makes the acid dew-point temperature of flue gas up to 90-110 DEG C.Flue gas is by after low temperature boiler smoke heat recovery cooler, and outlet temperature will be down to below acid dew point 80-90 DEG C, and low temperature boiler smoke heat recovery quencher moiety heat-exchanging tube bundle will certainly be run under flue gas acid dew point, produces corrosion.Traditional low temperature boiler smoke heat recovery cooler adopts different materials tube bank to be distributed in different temperatures region, and be embodied in: high temperature section adopts carbon steel material, middle-temperature section adopts ND steel (steel of resistance to sulfuric acid) material, and low-temperature zone adopts stainless steel.Because low-temperature zone tube wall temperature runs lower than flue gas acid dew point, the antiseptic property of stainless steel is lower, so can produce heavy corrosion at low-temperature zone stainless steel pipe surface.In order to optimal design, metal is organically combined with fluoroplastics material, is embodied in: high temperature section adopts carbon steel material, middle-temperature section adopts ND steel (steel of resistance to sulfuric acid) material, and low-temperature zone adopts fluoroplastics material.Because fluoroplastics material has good heat-proof corrosion resistant erosion performance, can ensure that tube wall temperature is lower than stable operation under flue gas acid dew point.And skin-friction coefficient is low, the not easily performance such as dust stratification, can be good at the etching problem solving low-temperature zone tube bank.
Summary of the invention
The purpose of this utility model is to provide a kind of low temperature boiler smoke heat recovery cooling arrangement.Its structure is simple, easy to use, adopts fluoroplastics tube bank (PTFE, also known as PFA) and metal material to organically combine, and solves the problem that the tube bank of Conventional cryogenic boiler smoke heat recovery cooling arrangement low-temperature zone produces heavy corrosion.Reach the effect of corrosion resistant, not easily dust stratification.And the heat of recovery boiler flue gas conducts heat to the boiler feedwater in tube bank and cooled flue gas, effectively utilizes fume afterheat, economize energy.
In order to solve the problem existing for background technology, the utility model by the following technical solutions: comprise housing, carbon steel tube bank, ND steel pipe bundle, fluoroplastics tube bank, inlet flue duct, tube bank outlet header, tube bank inlet header and exhaust pass; Described tube bank outlet header is restrained with carbon steel and is connected, and described tube bank inlet header is restrained with fluoroplastics and is connected; Described carbon steel tube bank is connected with ND steel pipe bundle; Described ND steel pipe bundle is restrained with fluoroplastics and is connected; Described inlet flue duct and exhaust pass are connected to housing two ends.
In said apparatus, described carbon steel tube bank, the tube bank of ND steel pipe bundle, fluoroplastics, tube bank outlet header, tube bank inlet header composition water circulation reheat machine.
In said apparatus, the device framework of described housing, inlet flue duct, exhaust pass composition.
The utility model has following beneficial effect: its structure is simple, easy to use, adopts fluoroplastics tube bank smooth surface less scaling, has extremely strong corrosion resistance, effectively can prevent low-temperature-acid-corrosion.Fume afterheat can be utilized to greatest extent, improve Unit Economic type.The problem that the tube bank of traditional stainless steel causes the heat transfer efficiency after running a period of time sharply to reduce due to heavy corrosion can be solved.Effectively can save the energy in thermal power plant, improve unit efficiency, reduce electricity consumption in factory.And in saving coal consumption, there is remarkable result water saving aspect.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of cooling arrangement in the utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, the utility model describes a kind of low temperature boiler smoke heat recovery cooling arrangement, comprises housing 1, carbon steel tube bank 2, ND steel pipe bundle 3, fluoroplastics tube bank 4, inlet flue duct 5, tube bank outlet header 6, tube bank inlet header 7 and exhaust pass 8;
Preferably, ND steel pipe bundle 3 is the steel pipe bundle of resistance to sulfuric acid, and above-mentioned carbon steel tube bank 2, ND steel pipe bundle 3, fluoroplastics tube bank 4, tube bank outlet header 6, tube bank inlet header 7 form water circulation reheat machine.
Wherein, above-mentioned tube bank outlet header 6 and carbon steel are restrained 2 and are connected, and tube bank inlet header 7 is restrained 4 with fluoroplastics and is connected, and carbon steel tube bank 2 is connected with ND steel pipe bundle 3, and ND steel pipe bundle 3 and fluoroplastics are restrained 4 and are connected; And inlet flue duct 5 and exhaust pass 8 are connected to housing 1 two ends.
Preferably, the device framework of above-mentioned housing 1, inlet flue duct 5, exhaust pass 8 composition.
Operation principle of the present utility model is: utilize fluoroplastics to restrain fluoroplastics material characteristic in 4, it is embodied in: fluoroplastics belong to inert material, has good chemical stability and excellent decay resistance.And surface tension is low not easily sticks, and low-friction coefficient has self-cleaning effect.Small volume structure is compact, lightweight.Flue gas is reduced from inlet flue duct 5 by temperature after whole tube bank, the corrosion-resistant fluoroplastics tube bank 4 of low-temperature zone Effec-tive Function under acid dew point.Tube bank is passed to by water circulation from restraining the intrafascicular boiler feedwater (condensed water) of inlet header 7 inflow pipe, feed temperature needed for heating boiler after absorbing flue gas heat, raising boiler operating efficiency, economize energy, reduces production cost.Owing to using fluoroplastics material to solve low-temperature zone tube bank corrosion and dust stratification problem, the long-term efficient stable of equipment is run.
In addition, its control procedure is as follows: when entering inlet flue duct 5 containing SO3 and subparticle flue gas, flue-gas temperature reaches about 120 DEG C.Flue gas is reduced to below flue gas acid dew point by temperature after high temperature section carbon steel tube bank 2, middle-temperature section ND steel pipe bundle 3, then by low-temperature zone fluoroplastics tube bank 4, because fluoroplastics material has good corrosion resistant anti-gray characteristic, makes it well run under flue gas acid dew point.After flue gas restrains 4 heat releases by fluoroplastics, temperature is reduced to 80-90 DEG C, and heat passes to tube bank.Condensed water initial temperature is about 50 DEG C, is flowed into from tube bank inlet header 7 by water circulation, and adverse current is by flowing out from tube bank outlet header 6 after each tube bank.Tube bank passes to condensed water the heat from smoke absorption, makes its temperature flowed out from tube bank outlet header 6 reach 80-100 DEG C.Whole process is that flue gas passes to condensed water by tube bank wall heat.And low-temperature zone fluoroplastics restrain 4 corrosion resistant anti-gray characteristics be whole device stable operation and realize above-mentioned flue gas cooling and heat recovery recycling good guarantee.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a low temperature boiler smoke heat recovery cooling arrangement, it is characterized in that, comprise housing (1), carbon steel tube bank (2), ND steel pipe bundle (3), fluoroplastics tube bank (4), inlet flue duct (5), tube bank outlet header (6), tube bank inlet header (7) and exhaust pass (8); Described tube bank outlet header (6) is restrained (2) and is connected with carbon steel, described tube bank inlet header (7) is restrained (4) and is connected with fluoroplastics; Described carbon steel tube bank (2) is connected with ND steel pipe bundle (3); Described ND steel pipe bundle (3) is restrained (4) and is connected with fluoroplastics; Described inlet flue duct (5) and exhaust pass (8) are connected to housing (1) two ends.
2. a kind of low temperature boiler smoke heat recovery cooling arrangement according to claim 1, it is characterized in that, described carbon steel tube bank (2), ND steel pipe bundle (3), fluoroplastics tube bank (4), tube bank outlet header (6), tube bank inlet header (7) composition water circulation reheat machine.
3. a kind of low temperature boiler smoke heat recovery cooling arrangement according to claim 1, is characterized in that, the device framework that described housing (1), inlet flue duct (5), exhaust pass (8) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420454262.0U CN204026646U (en) | 2014-08-13 | 2014-08-13 | A kind of low temperature boiler smoke heat recovery cooling arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420454262.0U CN204026646U (en) | 2014-08-13 | 2014-08-13 | A kind of low temperature boiler smoke heat recovery cooling arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204026646U true CN204026646U (en) | 2014-12-17 |
Family
ID=52066502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420454262.0U Active CN204026646U (en) | 2014-08-13 | 2014-08-13 | A kind of low temperature boiler smoke heat recovery cooling arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204026646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016238A (en) * | 2016-05-12 | 2016-10-12 | 江苏华能建设工程集团有限公司 | Heat exchanger for waste heat recovery of coal-fired boiler |
-
2014
- 2014-08-13 CN CN201420454262.0U patent/CN204026646U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016238A (en) * | 2016-05-12 | 2016-10-12 | 江苏华能建设工程集团有限公司 | Heat exchanger for waste heat recovery of coal-fired boiler |
| CN106016238B (en) * | 2016-05-12 | 2018-06-19 | 苏华建设集团有限公司 | A kind of coal-burning boiler waste heat recovery heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202092207U (en) | Central heating system recovering waste heat of smoke through absorbing type heat pump | |
| CN102734787B (en) | Concurrent recycling system for boiler smoke afterheat | |
| CN204739568U (en) | Energy saving and emission reduction system that horizontal phase transition heat exchanger and prefix type hydrophily formula GGH unite | |
| CN102607010B (en) | Composite phase-change heat exchange system | |
| CN104100994A (en) | Boiler energy saving and emission reduction system based on flue gas waste heat recovery and reheating technology | |
| CN205783036U (en) | A kind of power-plant flue gas system heat-exchanger rig | |
| CN104832939A (en) | System and method for recovering water of smoke based on fluorine plastic heat exchanger | |
| CN104964265A (en) | Energy-saving emission reduction system and energy-saving emission reduction method of horizontal type phase change heat exchanger and front-arrangement type water medium type GGH combined | |
| CN203737053U (en) | Waste heat-recovery condensation water saving device | |
| CN201764839U (en) | Heat-pipe apparatus for recycling smoke and waste heat | |
| CN103861420A (en) | Waste heat recovery condensation water-saving device | |
| CN105570956A (en) | Boiler flue gas waste heat circulating heat-supply system | |
| CN202630758U (en) | Heat pipe type smoke waste heat recovery device | |
| CN202902950U (en) | Anticorrosion high-efficient waste heat recovery device | |
| CN105841180A (en) | Horizontal type phase change smoke waste heat recovering and double-effect heating system and control method thereof | |
| CN204026646U (en) | A kind of low temperature boiler smoke heat recovery cooling arrangement | |
| CN203052704U (en) | Heating medium liquid type smoke-air heat exchanger | |
| CN208475361U (en) | A kind of system water-saving suitable for gas fired-boiler and gas turbine flue gas depth energy saving | |
| CN202630747U (en) | Waste heat recovery system capable of improving efficiency of electric dust collector | |
| CN204630434U (en) | A kind of plastic heat exchanger reclaimed for low-temperature flue gas waste heat | |
| CN204665323U (en) | A kind of based on water reclamation system in the flue gas of teflon heat exchanger | |
| CN105889963B (en) | A kind of heat-exchanger rig for wet desulfurization system | |
| CN204214285U (en) | The residual heat from boiler fume having boiler smoke dustproof function concurrently reclaims energy saver | |
| CN203718810U (en) | Smoke waste heat depth recycle device | |
| CN102645112A (en) | Waste heat recovery system for improving efficiency of electric dust collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200135 room 11, building 958, No. 11314, Lingshan Road, Shanghai, Pudong New Area Patentee after: SHANGHAI NENGHUI TECHNOLOGY CO., LTD. Address before: 200135 room 11, building 958, No. 11314, Lingshan Road, Shanghai, Pudong New Area Patentee before: Shanghai Nenghui Electric Power Technology Co., Ltd. |