CN106110826B - A kind of flue gas water pumping system of wet desulphurization - Google Patents
A kind of flue gas water pumping system of wet desulphurization Download PDFInfo
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- CN106110826B CN106110826B CN201610468839.7A CN201610468839A CN106110826B CN 106110826 B CN106110826 B CN 106110826B CN 201610468839 A CN201610468839 A CN 201610468839A CN 106110826 B CN106110826 B CN 106110826B
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- flue gas
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- wet desulphurization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of flue gas water pumping systems of wet desulphurization, belong to energy-conserving and emission-cutting technology field.A kind of flue gas water pumping system of wet desulphurization, Benitration reactor, air preheater, deduster, desulfuration absorbing tower and the core heat-exchange system being sequentially connected including boiler, with the exhanst gas outlet of the boiler；The core heat-exchange system includes heat exchanger.The flue gas water pumping system of the wet desulphurization removes the Aerosol Pollution in flue gas, and water resource and waste heat in recovered flue gas have saved the operating cost of system.
Description
Technical field
The present invention relates to anti-corrosion and energy-conserving and emission-cutting technology fields, and in particular to a kind of flue gas water pumping system of wet desulphurization.
Background technique
Contain a large amount of aqueous water in the fuel such as coal, biomass fuel, house refuse, this partial moisture is in a combustion chamber
Vaporization becomes vapor, and the latent heat of vaporization is huge, consumes a large amount of thermal energy；In addition burn after flue gas in wet desulfurization system,
The washing process of hot fume in spray column evaporates large quantity of moisture, so that moisture further increases and reaches wet saturation shape in flue gas
State, flue gas are rich in a large amount of moisture, this partial fume of current prevailing technology is directly discharged into atmosphere through chimney, and water consumption is big, and
And it is rich in particulate, cause flue gas that cannot spread in chimney breast, hangover is serious, and forming visual pollution, aerosol is dirty simultaneously
It contaminates heavier；In addition this partial fume corrosivity is strong, and HF, HCL, H2SO4, HNO3, high-concentration chlorine ion and high humidity are contained in flue gas
Environment causes to corrode for steel flue gas duct and chimney.
To avoid exhaust pass and chimney from corroding, there is technique to export using flue gas flue gas heat-exchange unit (GGH) Lai Tigao desulfurization
Flue-gas temperature, to prevent flue gas with water condensate corrosion exhaust pass and chimney, but since GGH is easy blocking and forms leakage cigarette dirt
Dye neat stress reduces desulfuration efficiency and minimum discharge is not achieved, and most of desulfurization projects have been abandoned；New development technique is adopted at present
With water-borne formula flue gas formula GGH, leakage flue gas and corrosion are avoided the problem that, in addition absorption tower exiting flue gas carries after heating up
Slurry droplet will be still in flue gas, increase dust content in flue gas.
Also there is technique to adopt the method for being water-cooled flue gas, carry out flue gas moisture extraction.But since moisture extracts main fit
For water-deficient area, adopts the method being water-cooled and also need consumption water.
Also technique adopts water as medium, then flue gas medium water uses air cooling media water, medium water constantly follows
The method of ring realizes that the cooling moisture of flue gas extracts, and this scheme heat exchange difference is small, and heat exchange area is big, and initial cost is big, operating cost
It is high.
The Chinese invention patent that application publication number is 102519068 A of CN discloses a kind of flue gas condensing water, waste heat recycling
Device uses water as cooling media, and desulfurization unit and heat exchange unit separate；Application publication number is 102829463 A of CN
Chinese invention patent disclose a kind of station boiler pole low-temperature flue gas waste heat reusing system, also using water as cooling media；
The two causes to waste to water resource, and equipment investment is big, operating cost is high.
Summary of the invention
The purpose of the present invention, it is recyclable for great lot of water resources in Aerosol Pollution in the flue gas after wet desulphurization, flue gas
The problem of using, flue and chimney seriously corroded.After the flue gas water pumping system realization wet desulphurization for disclosing a kind of wet desulphurization
Aerosol removing, flue gas water lift and flue gas waste heat recovery in flue gas, can be suitble to and reliability service is under the corrosive environment.
Technical proposal that the invention solves the above-mentioned problems is as follows:
A kind of flue gas water pumping system of wet desulphurization is sequentially connected de- including boiler, with the exhanst gas outlet of the boiler
Nitre reactor, air preheater, deduster, desulfuration absorbing tower and core heat-exchange system；The core heat-exchange system includes heat exchange
Device, the shell for being provided with heat exchanger tube made of resistant material in the heat exchanger and being arranged in outside the heat exchanger tube are described to change
It is tube side in heat pipe, for the recuperated gas that circulates, the heat exchanger tube is outer, the interior shell is shell side, for the flue gas that circulates；It is described
The two sides of tube side are respectively arranged with cool air inlet and hot air outlet, and the hot air outlet passes through hot-air pipeline and blower
It is connected；The two sides of the shell side are respectively arranged with hot fume entrance and cooled flue gas outlet；The lower part of the heat exchanger is provided with
For the condensation water drainage pipeline of condensed water to be discharged；The blower hot-air is delivered in the air preheater preheat it is laggard
Enter the boiler.
Core heat-exchange system is connected with power plant's air and gas system, and damp and hot saturated flue gas is drawn from desulfuration absorbing tower enters this system
Cigarette heat exchanger, damp and hot saturated flue gas walks shell side, and outdoor cold air enters the tube side of heat exchanger under the suction of blower, damp and hot full
Cooled with flue gas, the vapor in damp and hot saturated flue gas is with micronic dust, sulfur trioxide acid mist and other aerosol particles in flue gas
Son is nucleus condensation-crystallization, forms droplet or bigger droplet, and the new pH value for forming droplet is neutrality, is adsorbed in flue gas
Sour gas (mainly sulfur dioxide), part droplet are expelled to solidifying along tube side pipeline flow by gravity in the bottom of heat exchanger
Case is born water, part droplet is taken away by flue gas and then captured to form liquid film by subsequent demister, liquid film flow by gravity to condensed water
Case realizes the environmentally friendly income of the aerosol collections and sulfur dioxide removal etc. such as water extraction, sulfur trioxide.Coolant media air is heated
After can enter boiler air preheater, as boiler First air and Secondary Air, due to realizing energy saving profit；The coolant media being heated is empty
Gas can also directly flow back to atmosphere and only realize environmentally friendly income.Acid condensed water enters condensate tank, is condensed water pump pressurization and returns
Desulfuration absorbing tower later falls into the prizes pool of desulfuration absorbing tower, is contained alkaline matter for rinsing the demister of desulfuration absorbing tower
Desulfurization slurry acid-base neutralization form neutral salt, without secondary pollution.
Hot-air is delivered in the air preheater by the blower enters the boiler after preheating, take full advantage of de-
After sulphur the waste heat of air and not yet carry out desulfurization flue gas temperature, saving heat energy to the full extent.
The deduster can make electrostatic precipitator, be also possible to filter collector.
As a preferred embodiment of the above technical solution, the heat exchanger tube is vertically arranged, and the lower part of the heat exchanger is provided at least
Two layers of bottom plate, the hole for allowing the heat exchanger tube to pass through is offered on the bottom plate, and the diameter in the hole is greater than the heat exchanger tube
Outer diameter, and the diameter in the hole on two adjacent bottom plates is different.
The heat exchanger tube is using in-line arrangement or is staggered in arrangement, and the heat exchanger tube is welded on institute using the technique of sweat soldering
It states on shell.
As a preferred embodiment of the above technical solution, the bottom plate is three layers.
As a preferred embodiment of the above technical solution, sealed chamber is formed between the two neighboring bottom plate；The hot-air
Seal fan is connected on pipeline, the thermal current in a part of hot-air pipeline is delivered to described close by the seal fan
It seals in chamber, so that the indoor air pressure of the seal chamber is greater than the air pressure in the shell side, forms positive seal.
As a preferred embodiment of the above technical solution, the internal diameter of the heat exchanger tube is 40-200mm, is opened up on the bottom plate
The diameter in hole is 0.4-2mm bigger than the outer diameter of the heat exchanger tube.
Bottom plate is made of 3 layers of end plate, and first layer bottom plate bore size is that heat exchange pipe outside diameter adds 0.5-2mm, the second layer
Bottom plate bore size is that heat exchange pipe outside diameter adds 0.8-2mm, and third layer bottom plate bore size is that heat exchange pipe outside diameter adds 0.4-
2mm, heat exchanger tube pass through three layers of bottom plate, and heat exchanger tube constrained in three layers of bottom plate horizontal direction, in vertical direction freely, when changing
When 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；
Since there are gaps between heat exchanger tube and three layers of bottom plate aperture, leakage will cause, use the design of three layers of bottom plate can be with
The form for forming labyrinth seal reduces leakage, and sealing labyrinth generates the liquid in flue gas by tortuous gap mazy
Throttle effect and achieve the purpose that Drain Resistance；In addition upper sealed chamber is formed between first layer bottom plate and second layer bottom plate, the
Lower sealed chamber is formed between two layers of bottom plate and third layer bottom plate, the hot-air that seal fan extracts tube side outlet is fed through
Upper sealed chamber and lower sealed chamber, seal fan maintain the upper and lower indoor pressure of seal chamber be higher than shell side pressure 500Pa with
On, positive seal is formed, flue gas is avoided to leak in atmosphere.
Three layers of bottom plate are to have slope design, and slope control is 0.5% to 3%, to be conducive to the row that flue gas condensed is born water
Out, the internal diameter of condensation water drainage pipeline is greater than 80mm, is capable of forming water seal and avoids gas leakage, three layers of bottom plate design can be very good
The exudation for preventing condensed water, according further to the layer for needing to increase or reduce bottom plate for preventing flue gas leakage and condensed water exudation
Number.Side wall is made of carbon steel lining PTFE material or suitable alloy material, is had construction package to be formed between side wall and is entirely changed
The frame of hot device, construction package are made of carbon steel lining PTFE material or suitable alloy material, solve corrosion and leakage
Problem.
As a preferred embodiment of the above technical solution, heat exchanger tube made of PTFE plastics or PFA plastics is provided in the shell.
As a preferred embodiment of the above technical solution, the outlet of the condensation water drainage pipeline is connected with condensate tank, described solidifying
The lower part for bearing water case is provided with condensate pump, and the condensed water is delivered in the desulfuration absorbing tower and is used for by the condensate pump
Part sulphur in spray-absorption flue gas.
Condensed water is fully used for the sulphur in spray-absorption flue gas.
As a preferred embodiment of the above technical solution, the cooled flue gas outlet is also connected with demister, and the demister is folding
Formula demister is returned, the Zigzag type demister is connected with chimney；The lower part of the demister is also equipped with condensation water drainage pipeline.
As a preferred embodiment of the above technical solution, the shell is made of carbon steel material, and the inner lining of casing has anticorrosion
Material.
As a preferred embodiment of the above technical solution, the inner lining of casing has PTFE plastic plate or PFA plastic plate.
Water flue gas heat-exchange unit is additionally provided between the air preheater and the deduster.
The condensed water that can be generated with the antipyretic steam turbine of the water flue gas heat-exchange unit, and tentatively cooled down to flue gas.
In conclusion the invention has the following advantages:
1. the Aerosol Pollution in a kind of flue gas water pumping system removing flue gas of wet desulphurization of the present invention, recycling
Water resource and waste heat in flue gas；
2. a kind of flue gas water pumping system of wet desulphurization of the present invention is cooling using air, water is further saved
Resource；
3. a kind of flue gas water pumping system corrosion resistance and good of wet desulphurization of the present invention, durable.
Detailed description of the invention
Fig. 1 is the flue gas water pumping system structural schematic diagram of wet desulphurization；
Fig. 2 is core heat-exchange system structural schematic diagram；
Fig. 3 is heat exchanger structure schematic diagram；
In figure, 1- boiler, 2- Benitration reactor, 3- air preheater, 4- deduster, 5- desulfuration absorbing tower, 6- core are changed
Hot systems, 61- heat exchanger, 611- heat exchanger tube, 612- shell, 613- cool air inlet, 614- hot air outlet, 615- hot fume
Entrance, the outlet of 616- cooled flue gas, 617- bottom plate, 618- sealed chamber, 62- hot-air pipeline, 63- blower, 64- demisting
Device, 65- condensation water drainage pipeline, 66- seal fan, 67- condensate tank, 68- condensate pump, 7- water flue gas heat-exchange unit.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Embodiment in the present invention, ordinary skill
Personnel's all other embodiment obtained under the premise of not doing creative work, shall fall within the protection scope of the present invention.
With embodiment, the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1: a kind of flue gas water pumping system of wet desulphurization, including boiler 1, with the exhanst gas outlet of the boiler 1 according to
Secondary connected Benitration reactor 2, air preheater 3, water flue gas heat-exchange unit 7, deduster 4, desulfuration absorbing tower 5 and core heat exchange system
System 6；The core heat-exchange system includes heat exchanger 61, is vertically arranged with heat exchanger tube 611 made of PTFE in the heat exchanger 61
With the shell 612 being arranged in outside the heat exchanger tube 611, the interior heat exchanger tube 611 is tube side, described for the recuperated gas that circulates
Heat exchanger tube 611 is outer, the interior shell 612 is shell side, for the flue gas that circulates；The two sides of the tube side are respectively arranged with cold air and enter
Mouth 613 and hot air outlet 614, the hot air outlet 614 are connected by hot-air pipeline 62 with blower 63；The shell side
Two sides are respectively arranged with hot fume entrance 615 and cooled flue gas outlet 616, and the cooled flue gas outlet 616, which is also connected with, turns back
The demister 64 of formula；The lower part of the heat exchanger 61 and the lower part of the demister 64 are provided with the condensation for condensed water to be discharged
Water discharge pipe line 65；Hot-air is delivered in the air preheater 3 by the blower 63 enters the boiler 1 after preheating.
The lower part of the heat exchanger 61 is provided with two layers of bottom plate 617, offers on the bottom plate 617 and allows the heat exchange
The hole that pipe 611 passes through, the diameter in the hole are greater than the outer diameter of the heat exchanger tube 611, and on two adjacent bottom plates 617
Hole diameter it is different, first layer bottom plate bore size is that heat exchange pipe outside diameter adds 0.5-2mm, second layer bottom plate bore size
Add 0.8-2mm for heat exchange pipe outside diameter, the internal diameter of the heat exchanger tube 611 is 40mm.
Sealed chamber 618 is formed between two bottom plates 617；Seal fan is connected on the hot-air pipeline 62
66, the thermal current in a part of hot-air pipeline 62 is delivered in the sealed chamber 618 by the seal fan 66, is made
The air pressure that the air pressure in the sealed chamber 618 is greater than in the shell side is obtained, positive seal is formed.
The outlet of the condensation water drainage pipeline 65 is connected with condensate tank 67, and the lower part of the condensate tank 67 is provided with
Condensate pump 68.
The shell 612 is made of carbon steel material, and the shell 612 is lined with PTFE plastic plate.
Embodiment 2: a kind of flue gas water pumping system of wet desulphurization, including boiler 1, with the exhanst gas outlet of the boiler 1 according to
Secondary connected Benitration reactor 2, air preheater 3, water flue gas heat-exchange unit 7, deduster 4, desulfuration absorbing tower 5 and core heat exchange system
System 6；The core heat-exchange system includes heat exchanger 61, and 611 He of heat exchanger tube made of PFA is vertically arranged in the heat exchanger 61
Shell 612 outside the heat exchanger tube 611 is set, is tube side in the heat exchanger tube 611, it is described to change for the recuperated gas that circulates
Heat pipe 611 is outer, the interior shell 612 is shell side, for the flue gas that circulates；The two sides of the tube side are respectively arranged with cool air inlet
613 and hot air outlet 614, the hot air outlet 614 is connected by hot-air pipeline 62 with blower 63；The two of the shell side
Side is respectively arranged with hot fume entrance 615 and cooled flue gas outlet 616, and the cooled flue gas outlet 616 is also connected with Zigzag type
Demister 64；The lower part of the heat exchanger 61 and the lower part of the demister 64 are provided with the condensed water for condensed water to be discharged
Discharge pipe line 65；Hot-air is delivered in the air preheater 3 by the blower 63 enters the boiler 1 after preheating.
The lower part of the heat exchanger 61 is provided with three layers of bottom plate 617, offers on the bottom plate 617 and allows the heat exchange
The hole that pipe 611 passes through, the diameter in the hole are greater than the outer diameter of the heat exchanger tube 611, and on two adjacent bottom plates 617
Hole diameter it is different, first layer bottom plate bore size is that heat exchange pipe outside diameter adds 0.5-2mm, second layer bottom plate bore size
Add 0.8-2mm for heat exchange pipe outside diameter, third layer bottom plate bore size is that heat exchange pipe outside diameter adds 0.4-2mm, the heat exchanger tube 11
Internal diameter be 200mm.
Sealed chamber 618 is formed between two bottom plates 617；Seal fan is connected on the hot-air pipeline 62
66, the thermal current in a part of hot-air pipeline 62 is delivered in the sealed chamber 618 by the seal fan 66, is made
The air pressure that the air pressure in the sealed chamber 618 is greater than in the shell side is obtained, positive seal is formed.
The outlet of the condensation water drainage pipeline 65 is connected with condensate tank 7, and the lower part of the condensate tank 67 is provided with
The condensed water is delivered in the desulfuration absorbing tower 5 and is used for spray-absorption flue gas by condensate pump 68, the condensate pump 68
In part sulphur.
The shell 612 is made of carbon steel material, and the shell 612 is lined with PFA plastic plate.
Claims (8)
1. a kind of flue gas water pumping system of wet desulphurization, it is characterised in that: go out including boiler (1), with the flue gas of the boiler (1)
Benitration reactor (2), air preheater (3), deduster (4), desulfuration absorbing tower (5) and the core heat-exchange system that mouth is sequentially connected
(6)；The core heat-exchange system includes heat exchanger (61), and heat exchange made of resistant material is provided in the heat exchanger (61)
It manages (611) and the shell (612) in the heat exchanger tube (611) outside is set, be tube side in the heat exchanger tube (611), for circulating
Recuperated gas, the heat exchanger tube (611) outside, in the shell (612) be shell side, for the flue gas that circulates, the heat exchanger tube (611)
Vertically arranged, the lower part of the heat exchanger (61) is provided at least two layers of bottom plate (617), opens up on the bottom plate (617)
There is the hole for allowing the heat exchanger tube (611) to pass through, the diameter in the hole is greater than the outer diameter of the heat exchanger tube (611), and adjacent two
The diameter in the hole on a bottom plate (617) is different；Sealed chamber is formed between the two neighboring bottom plate (617)
(618)；It is connected on hot-air pipeline (62) seal fan (66), the seal fan (66) is by a part of warm-air pipe
Thermal current in road (62) is delivered in the sealed chamber (618), so that the air pressure in the sealed chamber (618) is greater than institute
The air pressure in shell side is stated, positive seal is formed；The two sides of the tube side are respectively arranged with cool air inlet (613) and hot-air goes out
Mouth (614), the hot air outlet (614) are connected by hot-air pipeline (62) with blower (63)；The two sides of the shell side point
It is not provided with hot fume entrance (615) and cooled flue gas outlet (616)；The lower part of the heat exchanger (61) is provided with for being discharged
The outlet of the condensation water drainage pipeline (65) of condensed water, the condensation water drainage pipeline (65) is connected with condensate tank (67)；Institute
It states blower (63) and hot-air is delivered in the air preheater (3) after preheating and enter the boiler (1).
2. a kind of flue gas water pumping system of wet desulphurization according to claim 1, it is characterised in that: the bottom plate
It (617) is three layers.
3. a kind of flue gas water pumping system of wet desulphurization according to claim 1 or 2, it is characterised in that: the heat exchanger tube
(611) internal diameter is 40-200mm, the outer diameter of the diameter in the hole opened up on the bottom plate (617) than the heat exchanger tube (611)
Big 0.4-2mm.
4. a kind of flue gas water pumping system of wet desulphurization according to claim 1 or 2, it is characterised in that: the shell
(612) heat exchanger tube (611) made of PTFE plastics or PFA plastics is provided in.
5. a kind of flue gas water pumping system of wet desulphurization according to claim 1, it is characterised in that: the condensation water drainage
The outlet of pipeline (65) is connected with condensate tank (67), and the lower part of the condensate tank (67) is provided with condensate pump (68), institute
It states condensate pump (68) condensed water is delivered in the desulfuration absorbing tower (5) for the part in spray-absorption flue gas
Sulphur.
6. a kind of flue gas water pumping system of wet desulphurization according to claim 1, it is characterised in that: the cooled flue gas goes out
Mouth (616) is also connected with demister (64), and the demister (64) is Zigzag type demister, the Zigzag type demister and chimney
It is connected；The lower part of the demister (64) is also equipped with condensation water drainage pipeline (65).
7. a kind of flue gas water pumping system of wet desulphurization according to claim 1, it is characterised in that: the shell (612)
It is made of carbon steel material, the shell (612) is lined with anticorrosion material.
8. a kind of flue gas water pumping system of wet desulphurization according to claim 1, it is characterised in that: the air preheater
(3) it is additionally provided between the deduster (4) water flue gas heat-exchange unit (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610468839.7A CN106110826B (en) | 2016-06-25 | 2016-06-25 | A kind of flue gas water pumping system of wet desulphurization |
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|---|---|---|---|
| CN201610468839.7A CN106110826B (en) | 2016-06-25 | 2016-06-25 | A kind of flue gas water pumping system of wet desulphurization |
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| CN106110826B true CN106110826B (en) | 2019-03-05 |
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| CN107448964A (en) * | 2016-12-29 | 2017-12-08 | 湖州鼎诚环保科技有限公司 | A kind of smoke processing system for waste gas generated by burning garbage processing |
| CN106693695A (en) * | 2016-12-30 | 2017-05-24 | 湖州鼎诚环保科技有限公司 | Energy-saving type flue gas treating system |
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