CN205897909U - A indirect heating equipment for flue gas desulfurization - Google Patents
A indirect heating equipment for flue gas desulfurization Download PDFInfo
- Publication number
- CN205897909U CN205897909U CN201620636650.XU CN201620636650U CN205897909U CN 205897909 U CN205897909 U CN 205897909U CN 201620636650 U CN201620636650 U CN 201620636650U CN 205897909 U CN205897909 U CN 205897909U
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- CN
- China
- Prior art keywords
- flue gas
- heat exchanger
- exchanger tube
- shell
- gas desulfurization
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Abstract
The utility model relates to an indirect heating equipment for flue gas desulfurization belongs to energy saving and emission reduction technical field. An indirect heating equipment for flue gas desulfurization, includes the heat exchanger, it is in with setting up to be provided with the heat exchange tube that corrosion -resistant material made in the heat exchanger the outer shell of heat exchange tube, be the tube side in the heat exchange tube for circulation recuperated gas, outside the heat exchange tube be the shell side in the shell for the circulation flue gas, the both sides of tube side are provided with cool air input and hot -air export respectively, the hot -air export links to each other with the fan through the hot air pipe way, the both sides of shell side are provided with hot flue gas entry and cooling exhanst gas outlet respectively, the cooling exhanst gas outlet still is connected with the defroster, the lower part of heat exchanger with the lower part of defroster is provided with the condensate water drain line of the condensate water that is used for discharging. Aerosol in this indirect heating equipment desorption flue gas pollutes, retrieves water resource and waste heat in the flue gas, durable.
Description
Technical field
The utility model is related to anti-corrosion and energy-conserving and emission-cutting technology field and in particular to a kind of heat exchange for flue gas desulfurization sets
Standby.
Background technology
Substantial amounts of aqueous water is contained, this part moisture is in a combustion chamber in the fuel such as coal, biomass fuel, house refuse
Vaporization becomes vapor, and the latent heat of vaporization is huge, consumes substantial amounts of heat energy；In addition the flue gas after burning in wet desulfurization system,
The washing process of the heat smoke in spray column, evaporates large quantity of moisture so that moisture increases up to wet saturation shape further in flue gas
State, flue gas is rich in substantial amounts of moisture, and this partial fume of current prevailing technology directly enters air through chimney, and water consumption is big, and
And it is rich in particulate, cause flue gas can not spread in chimney breast, hangover is serious, aerosol is dirty simultaneously to form visual pollution
Dye is heavier；In addition this partial fume corrosivity is strong, contains hf, hcl, h2so4, hno3, high-concentration chlorine ion and high humidity in flue gas
Environment, causes to corrode for steel flue gas duct and chimney.
For avoiding exhaust pass and chimney corrosion, technique is had to adopt flue gas flue gas heat-exchange unit (ggh) to improve desulfurization outlet
Flue-gas temperature, to prevent flue gas with water condensate corrosion exhaust pass and chimney, but because ggh easily blocks and forms leakage cigarette dirt
Dye neat stress reduces desulfuration efficiency and does not reach minimum discharge, and most of desulfurization project have been abandoned；New development technique is adopted at present
With hydrophily formula flue gas formula ggh, it is to avoid reveal flue gas and the problem of corrosion, in addition after heating up, it carries absorption tower exiting flue gas
Slurry droplet will be still in flue gas, increased dust content in flue gas.
Also there is the method that technique adopts water cooling flue gas, carry out flue gas moisture extraction.But mainly fit because moisture extracts
For water-deficient area, need also exist for consuming water using the method for water cooling.
Also there is technique to adopt water as medium, flue gas medium water, then use air cooling media water, medium water constantly follows
The method of ring is realized flue gas cooling moisture and is extracted, and this scheme heat exchange difference is little, and heat exchange area is big, and initial cost is big, operating cost
High.
Application publication number is that the Chinese invention patent of cn 102519068 a discloses a kind of flue gas condensing water, waste heat recovery
Device, it is adopted and uses water as cooling media, and desulfurization unit and heat exchange unit separate；Application publication number is cn 102829463 a
Chinese invention patent disclose a kind of station boiler pole low-temperature flue gas waste heat reusing system, be also adopted by water as cooling media；
The two all causes to water resource to waste, and equipment investment is big, operating cost is high.
Utility model content
The purpose of this utility model, can for great lot of water resources in Aerosol Pollution in the flue gas after wet desulphurization, flue gas
The problem of recycling, flue and chimney seriously corroded.Disclose a kind of heat transmission equipment for flue gas desulfurization and realize wet desulphurization
Aerosol removing, flue gas water lift and flue gas waste heat recovery in flue gas afterwards, can be suitable for and reliability service is under this corrosive environment.
The technical scheme that the utility model solves the above problems is as follows:
A kind of heat transmission equipment for flue gas desulfurization, including heat exchanger, is provided with resistant material system in described heat exchanger
The heat exchanger tube becoming and the shell being arranged on outside described heat exchanger tube, are tube side in described heat exchanger tube, for the recuperated gas that circulate, described
Heat exchanger tube is outer, described inside the shell is shell side, for the flue gas that circulates；The both sides of described tube side are respectively arranged with cool air inlet and heat
Air outlet slit, described hot air outlet is connected with blower fan by hot-air pipeline；The both sides of described shell side are respectively arranged with hot cigarette
Gas entrance and cooled flue gas outlet；The bottom of described heat exchanger is provided with the condensation water drainage pipeline for discharging condensate.
This heat transmission equipment is connected with power plant air and gas system, and damp and hot saturated flue gas are drawn from desulfuration absorbing tower and entered the system
Cigarette heat exchanger, damp and hot saturated flue gas walk shell side, and outdoor cold air enters the tube side of heat exchanger, damp and hot saturation under the suction of blower fan
Flue gas is cooled, and the vapor in damp and hot saturated flue gas is with the micronic dust in flue gas, sulfur trioxide acid mist and other particulates
For nucleus condensation-crystallization, form the droplet of droplet or bigger, the new acid-base value forming droplet is neutrality, the acid in absorption flue gas
Property gas (mainly sulfur dioxide), part droplet, along tube side pipeline flow by gravity, is expelled to condensation in the bottom of heat exchanger
Water tank, part droplet is taken away by flue gas and is subsequently formed liquid film by follow-up demister capture, liquid film flow by gravity to condensate tank,
Realize the environmental protection income such as aerosol collection and sulfur dioxide removal such as water extraction, sulfur trioxide.After coolant media air is heated
Boiler air preheater can be entered, as boiler First air and Secondary Air, due to realizing energy saving profit；Heated coolant media air
Also can directly flow back to air and only realize environmental protection income.Acid condensate enters condensate tank, is condensed water pump pressurization return de-
Sulphur absorption tower, for rinsing the demister of desulfuration absorbing tower, later falls into the prizes pool of desulfuration absorbing tower, by containing alkaline matter
Desulfurization slurry acid-base neutralization forms the salt of neutrality, does not have secondary pollution.
Preferred as technique scheme, described heat exchanger tube is vertically arranged, and the bottom of described heat exchanger is provided with least
Two-layer bottom plate, described bottom plate offers the hole allowing described heat exchanger tube to pass through, described hole with diameter greater than described heat exchanger tube
External diameter, and the diameter in the hole on two adjacent described bottom plates is different.
Described heat exchanger tube using in-line arrangement or is staggered in arrangement, and described heat exchanger tube is welded on institute using the technique of sweat soldering
State on shell.
Preferred as technique scheme, described bottom plate is three layers.
Preferred as technique scheme, form sealed chamber between two neighboring described bottom plate；Described hot-air
Seal fan is connected with pipeline, the thermal current in a part of described hot-air pipeline is delivered to described close by described seal fan
Envelope within the chamber, so that the air pressure in described sealed chamber is more than the air pressure in described shell side, forms positive seal.
Preferred as technique scheme, the internal diameter of described heat exchanger tube is 40-200mm, and described bottom plate opens up
The diameter 0.4-2mm bigger than the external diameter of described heat exchanger tube in hole.
Bottom plate is made up of 3 layers of end plate, and ground floor bottom plate bore size adds 0.5-2mm, the second layer for heat exchanger tube external diameter
Bottom plate bore size adds 0.8-2mm for heat exchanger tube external diameter, and third layer bottom plate bore size adds 0.4- for heat exchanger tube external diameter
2mm, heat exchanger tube passes through three layers of bottom plate, and heat exchanger tube is constrained in three layers of bottom plate horizontal direction, in vertical direction freely, when changing
During heat pipe expanded by heating, heat exchanger tube upper end is fixed on upper head plate, and heat exchanger tube lower end can pass through three layers of bottom plate free wxpansion；
Due to there is gap between heat exchanger tube and three layers of bottom plate perforate, therefore can cause to reveal, be designed using three layers of bottom plate permissible
The form forming labyrinth seal reduces leakage, and sealing labyrinth passes through tortuous gap mazy and liquid in flue gas is produced
Throttle effect and reach the purpose of Drain Resistance；In addition form upper sealed chamber between ground floor bottom plate and second layer bottom plate, the
Form lower sealed chamber, the hot-air that seal fan extracts tube side outlet is fed through between two layers of bottom plate and third layer bottom plate
Upper sealed chamber and lower sealed chamber, seal fan maintain upper and lower sealed chamber in pressure be higher than shell side pressure 500pa with
On, form positive seal, it is to avoid flue gas leaks in air.
Three layers of bottom plate have been slope design, slope control 0.5% to 3% to be conducive to the row that flue gas condensed bears water
Go out, the internal diameter of condensation water drainage pipeline is more than 80mm, can form water seal and avoid gas leakage, three layers of bottom plate design can be very good
Prevent oozing out of condensate, according further to the layer needing increase or reducing bottom plate preventing flue gas from revealing and condensate oozes out
Number.Side wall serves as a contrast ptfe material using carbon steel or suitable alloy material is made, and has construction package to be formed and entirely change between the wall of side
The framework of hot device, construction package serves as a contrast ptfe material using carbon steel or suitable alloy material is made, and solves corrosion and seepage
Problem.
Preferred as technique scheme, described inside the shell is provided with the heat exchanger tube that ptfe plastics or pfa plastics are made.
Preferred as technique scheme, the outlet of described condensation water drainage pipeline is connected with condensate tank, described solidifying
The bottom bearing water case is provided with condensate pump.
Preferred as technique scheme, described cooled flue gas outlet is also associated with demister, and described demister is folding
Return formula demister, described Zigzag type demister is connected with chimney；The bottom of described demister is also equipped with condensation water drainage pipeline.
Preferred as technique scheme, described shell is made using carbon steel material, and described inside the shell is lined with anticorrosion
Material.
Preferred as technique scheme, described inside the shell is lined with ptfe plastic plate or pfa plastic plate.
In sum, the utility model has the advantages that
1. a kind of heat transmission equipment for flue gas desulfurization described in the utility model removes the Aerosol Pollution in flue gas,
Water resource in recovered flue gas and waste heat；
2. a kind of heat transmission equipment for flue gas desulfurization described in the utility model adopts air to cool down, and saves further
Water resource；
3. a kind of heat transmission equipment corrosion resistance and good for flue gas desulfurization described in the utility model, durable in use.
Brief description
Fig. 1 is a kind of heat transmission equipment structural representation for flue gas desulfurization；
Fig. 2 is heat exchanger structure schematic diagram；
In figure, 1- heat exchanger, 11- heat exchanger tube, 12- shell, 13- cool air inlet, 14- hot air outlet, 15- heat smoke
Entrance, the outlet of 16- cooled flue gas, 17- bottom plate, 18- sealed chamber, 2- hot-air pipeline, 3- blower fan, 4- demister, 5- coagulate
Bear water discharge pipe line, 6- seal fan, 7- condensate tank, 8- condensate pump.
Specific embodiment
Technical scheme in the utility model embodiment will be clearly and completely described it is clear that described below
Embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Embodiment in the utility model, this
All other embodiment that field those of ordinary skill is obtained under the premise of not doing creative work, broadly falls into this practicality new
The scope of type protection.
With embodiment, the utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1: a kind of heat transmission equipment for flue gas desulfurization, including heat exchanger 1, it is vertically arranged in described heat exchanger 1
There are the ptfe heat exchanger tube 11 made and the shell 12 being arranged on outside described heat exchanger tube 11, be tube side in described heat exchanger tube 11, be used for
Circulation recuperated gas, described heat exchanger tube 11 is outer, described shell 12 is interior is shell side, for the flue gas that circulates；The both sides of described tube side are divided
It is not provided with cool air inlet 13 and hot air outlet 14, described hot air outlet 14 passes through hot-air pipeline 2 and blower fan 3 phase
Even；The both sides of described shell side are respectively arranged with heat smoke entrance 15 and cooled flue gas outlet 16, and described cooled flue gas outlet 16 is also
It is connected with the demister 4 of Zigzag type；The bottom of the bottom of described heat exchanger 1 and described demister 4 is provided with and condenses for discharging
The condensation water drainage pipeline 5 of water.
The bottom of described heat exchanger 1 is provided with two-layer bottom plate 17, described bottom plate 17 offers and allows described heat exchanger tube
11 holes passing through, the hole on the external diameter with diameter greater than described heat exchanger tube 11 in described hole, and adjacent two described bottom plates 17
Diameter different, ground floor bottom plate bore size adds 0.5-2mm for heat exchanger tube external diameter, and second layer bottom plate bore size is for changing
Heat pipe external diameter adds 0.8-2mm, and the internal diameter of described heat exchanger tube 11 is 40mm.
Form sealed chamber 18 between two described bottom plates 17；It is connected with seal fan 6 on described hot-air pipeline 2,
Described seal fan 6 thermal current in a part of described hot-air pipeline 2 is delivered in described sealed chamber 18 so that described
Air pressure in sealed chamber 18 is more than the air pressure in described shell side, forms positive seal.
The outlet of described condensation water drainage pipeline 5 is connected with condensate tank 7, and the bottom of described condensate tank 7 is provided with solidifying
Bear water pump 8.
Described shell 12 is made using carbon steel material, and described shell 12 is lined with ptfe plastic plate.
Embodiment 2: a kind of heat transmission equipment for flue gas desulfurization, including heat exchanger 1, it is vertically arranged in described heat exchanger 1
There are the pfa heat exchanger tube 11 made and the shell 12 being arranged on outside described heat exchanger tube 11, be tube side in described heat exchanger tube 11, for flowing
Logical recuperated gas, described heat exchanger tube 11 is outer, described shell 12 is interior is shell side, for the flue gas that circulates；The both sides of described tube side are respectively
It is provided with cool air inlet 13 and hot air outlet 14, described hot air outlet 14 is connected with blower fan 3 by hot-air pipeline 2；
The both sides of described shell side are respectively arranged with heat smoke entrance 15 and cooled flue gas outlet 16, and described cooled flue gas outlet 16 is also connected with
There is the demister 4 of Zigzag type；The bottom of the bottom of described heat exchanger 1 and described demister 4 is provided with for discharging condensate
Condensation water drainage pipeline 5.
The bottom of described heat exchanger 1 is provided with three layers of bottom plate 17, described bottom plate 17 offers and allows described heat exchanger tube
11 holes passing through, the hole on the external diameter with diameter greater than described heat exchanger tube 11 in described hole, and adjacent two described bottom plates 17
Diameter different, ground floor bottom plate bore size adds 0.5-2mm for heat exchanger tube external diameter, and second layer bottom plate bore size is for changing
Heat pipe external diameter adds 0.8-2mm, and third layer bottom plate bore size adds 0.4-2mm for heat exchanger tube external diameter, described heat exchanger tube 11 interior
Footpath is 200mm.
Form sealed chamber 18 between two described bottom plates 17；It is connected with seal fan 6 on described hot-air pipeline 2,
Described seal fan 6 thermal current in a part of described hot-air pipeline 2 is delivered in described sealed chamber 18 so that described
Air pressure in sealed chamber 18 is more than the air pressure in described shell side, forms positive seal.
The outlet of described condensation water drainage pipeline 5 is connected with condensate tank 7, and the bottom of described condensate tank 7 is provided with solidifying
Bear water pump 8.
Described shell 12 is made using carbon steel material, and described shell 12 is lined with pfa plastic plate.
Claims (10)
1. a kind of heat transmission equipment for flue gas desulfurization, including heat exchanger (1) it is characterised in that: setting in described heat exchanger (1)
There is the heat exchanger tube (11) that resistant material makes and be arranged on described heat exchanger tube (11) shell (12) outward, described heat exchanger tube (11)
Interior for tube side, for the recuperated gas that circulate, described heat exchanger tube (11) outward, be shell side in described shell (12), for the flue gas that circulates；
The both sides of described tube side are respectively arranged with cool air inlet (13) and hot air outlet (14), and described hot air outlet (14) is passed through
Hot-air pipeline (2) is connected with blower fan (3)；The both sides of described shell side are respectively arranged with heat smoke entrance (15) and cooled flue gas go out
Mouth (16)；The bottom of described heat exchanger (1) is provided with the condensation water drainage pipeline (5) for discharging condensate.
2. a kind of heat transmission equipment for flue gas desulfurization according to claim 1 it is characterised in that: described heat exchanger tube (11)
Vertically arranged, the bottom of described heat exchanger (1) is provided with least two-layer bottom plate (17), described bottom plate (17) offers and allows
The hole that described heat exchanger tube (11) passes through, the external diameter with diameter greater than described heat exchanger tube (11) in described hole, and described in adjacent two
The diameter in the hole on bottom plate (17) is different.
3. a kind of heat transmission equipment for flue gas desulfurization according to claim 2 it is characterised in that: described bottom plate (17)
For three layers.
4. a kind of heat transmission equipment for flue gas desulfurization according to Claims 2 or 3 it is characterised in that: two neighboring institute
State and between bottom plate (17), form sealed chamber (18)；Seal fan (6) is connected with described hot-air pipeline (2), described close
Envelope blower fan (6) thermal current in a part of described hot-air pipeline (2) is delivered in described sealed chamber (18) so that described
Air pressure in sealed chamber (18) is more than the air pressure in described shell side, forms positive seal.
5. a kind of heat transmission equipment for flue gas desulfurization according to Claims 2 or 3 it is characterised in that: described heat exchanger tube
(11) internal diameter is 40-200mm, and the diameter in the hole that described bottom plate (17) opens up is bigger than the external diameter of described heat exchanger tube (11)
0.4-2mm.
6. a kind of heat transmission equipment for flue gas desulfurization according to any one in claim 1-3 it is characterised in that: institute
State and in shell (12), be provided with the heat exchanger tube (11) that ptfe plastics or pfa plastics are made.
7. a kind of heat transmission equipment for flue gas desulfurization according to claim 1 it is characterised in that: described condensation water drainage
The outlet of pipeline (5) is connected with condensate tank (7), and the bottom of described condensate tank (7) is provided with condensate pump (8).
8. a kind of heat transmission equipment for flue gas desulfurization according to claim 1 it is characterised in that: described cooled flue gas go out
Mouth (16) is also associated with demister (4), and described demister (4) is Zigzag type demister, described Zigzag type demister and chimney phase
Even；The bottom of described demister (4) is also equipped with condensation water drainage pipeline (5).
9. a kind of heat transmission equipment for flue gas desulfurization according to claim 1 it is characterised in that: described shell (12) is adopted
Made with carbon steel material, described shell (12) is lined with anticorrosive.
10. a kind of heat transmission equipment for flue gas desulfurization according to claim 9 it is characterised in that: described shell (12)
It is lined with ptfe plastic plate or pfa plastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620636650.XU CN205897909U (en) | 2016-06-25 | 2016-06-25 | A indirect heating equipment for flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620636650.XU CN205897909U (en) | 2016-06-25 | 2016-06-25 | A indirect heating equipment for flue gas desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205897909U true CN205897909U (en) | 2017-01-18 |
Family
ID=57769135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620636650.XU Withdrawn - After Issue CN205897909U (en) | 2016-06-25 | 2016-06-25 | A indirect heating equipment for flue gas desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205897909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017154A (en) * | 2016-06-25 | 2016-10-12 | 湖州鼎诚环保科技有限公司 | Heat exchange equipment used for flue gas desulfurization |
| CN107013926A (en) * | 2017-05-27 | 2017-08-04 | 福建长生环保有限公司 | Air heating apparatus and its application method |
-
2016
- 2016-06-25 CN CN201620636650.XU patent/CN205897909U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017154A (en) * | 2016-06-25 | 2016-10-12 | 湖州鼎诚环保科技有限公司 | Heat exchange equipment used for flue gas desulfurization |
| CN106017154B (en) * | 2016-06-25 | 2018-08-03 | 浙江鼎诚环保科技有限公司 | A kind of heat transmission equipment for flue gas desulfurization |
| CN107013926A (en) * | 2017-05-27 | 2017-08-04 | 福建长生环保有限公司 | Air heating apparatus and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20180803 |
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| AV01 | Patent right actively abandoned |