CN110425551A - A kind of low energy consumption flue gas purification system and its purification method - Google Patents
A kind of low energy consumption flue gas purification system and its purification method Download PDFInfo
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- CN110425551A CN110425551A CN201910750546.1A CN201910750546A CN110425551A CN 110425551 A CN110425551 A CN 110425551A CN 201910750546 A CN201910750546 A CN 201910750546A CN 110425551 A CN110425551 A CN 110425551A
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- flue gas
- energy consumption
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003546 flue gas Substances 0.000 title claims abstract description 42
- 238000005265 energy consumption Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims abstract description 90
- 239000002737 fuel gas Substances 0.000 claims abstract description 39
- 230000008676 import Effects 0.000 claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 12
- 239000003345 natural gas Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 239000000567 combustion gas Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000001413 cellular effect Effects 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 239000010963 304 stainless steel Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- 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
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- 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
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of low energy consumption flue gas purification system of the invention, including air-introduced machine, heat exchanger, fuel gas buring furnace and chilling tower, heat exchanger includes shell and tube bank, the both ends of tube bank respectively with hot air intake and heat outlet are sealed is connected, air-introduced machine passes through inlet end of the cold air import through the external fuel gas buring furnace of cold air outlet, the output end of fuel gas buring furnace is connected with hot air intake, and heat outlet is connected with chilling tower.By the way that the high-temperature gas exported from fuel gas buring furnace is input in heat exchanger, it is interacted in heat exchanger with cryogenic gas using high-temperature gas, to to heat the cryogenic gas that will enter in fuel gas buring furnace, so that the temperature of cryogenic gas is more nearly the ignition temperature in fuel gas buring furnace, to reduce the natural gas consumption in fuel gas buring furnace, simultaneously, the gas exported from fuel gas buring furnace, under the action of cryogenic gas, cooling rapidly, to the temperature to be lowered into gas in chilling tower, to reduce the consumption of cooling water in chilling tower.
Description
Technical field
The present invention relates to tail gas disposal technique fields, more particularly, to a kind of low energy consumption flue gas purification system and its only
Change method.
Background technique
Environmental problem, especially dioxin, high CO, high O2And high VOC content discharges caused air pollution, seriously
Influence the life and health of the people.
However, the natural gas loss that will lead in combustion furnace is higher since the gas temperature being input in combustion furnace is lower,
And it is excessive from the gas temperature in combustion furnace, it needs to influence to result in the need for expending biggish water resource by repeatedly cooling, this is just
Cause the energy consumption of its whole system higher.
For above-mentioned problem, the gas after how making full use of heating is treated elevated temperature gas and is heated, and becomes reduction
The key technical problem of fume treatment energy consumption.
Summary of the invention
The present invention provides a kind of low energy consumption flue gas purification system that structure is simple and convenient to operate, to solve upper existing flue gas
Handle the high technical problem of energy consumption.
According to an aspect of the invention, there is provided a kind of low energy consumption flue gas purification system, including air-introduced machine, heat exchanger,
Fuel gas buring furnace and chilling tower, the heat exchanger include shell and tube bank, the shell be equipped with hot air intake, heat outlet,
Cold air import and cold air outlet, the hot air intake are oppositely arranged with the heat outlet, the cold air import and the cold air
Outlet is oppositely arranged, and the tube bank is installed in the shell, the both ends of the tube bank respectively with the hot air intake and described
Heat outlet is sealed to be connected, and the air-introduced machine is by the cold air import through the external fuel gas buring furnace of the cold air outlet
Inlet end, the output end of the fuel gas buring furnace is connected with the hot air intake, the heat outlet and the chilling tower
It is connected.
On the basis of above scheme preferably, the fuel gas buring furnace includes inner barrel and outer barrel, and the outer sleeve is mounted in described
On inner cylinder, and it is equipped with combustion chamber in the inner cylinder, and is installed with air inlet flow distribution plate in one end of the inner cylinder, the air inlet shunts
It is in cellular air inlet that plate, which is equipped with, and the inner edge surface of the inner cylinder is equipped with spiral deflector, goes back on the inner cylinder
Equipped with gas inlet, the external gas inlet pipe of gas inlet, the center line of the gas inlet pipe and the inner cylinder
Inner edge surface it is tangent.
On the basis of above scheme preferably, back flow plate is additionally provided in the inner cylinder, the back flow plate and the inner cylinder are coaxial
Setting, and the back flow plate is installed on the deflector by ribs.
On the basis of above scheme preferably, the bottom of the inner cylinder sets the positioning and fixing of support plate realization and outer cylinder, institute
State air inlet flow distribution plate be set to the outer cylinder top, and the air inlet be arranged in corresponding to the internal diameter of the inner cylinder described in into
On gas flow distribution plate.
On the basis of above scheme preferably, the heat exchanger includes shell and tube bank, the shell be equipped with hot air intake,
Heat outlet, cold air import and cold air outlet, the hot air intake are oppositely arranged with the heat outlet, the cold air import with
The cold air outlet is oppositely arranged, and the tube bank is installed in the shell, the both ends of the tube bank respectively with the hot gas into
Mouthful and the heat outlet is sealed is connected, the tube bank is arranged by multiple heat exchanger tube intervals, and section of the heat exchanger tube
Face is in flat, and is equipped with protrusion wave-shaped along its length direction in the heat exchanger tube.
On the basis of above scheme preferably, the cold air entrance is installed with filter plate, the filtering equipped with detachable
Plate is equipped with filter hole.
On the basis of above scheme preferably, the tube bank is arranged by multiple heat exchanger tube intervals, and the heat exchanger tube
Section is in flat, and is equipped with protrusion wave-shaped along its length direction in the heat exchanger tube.
On the basis of above scheme preferably, the outer edge surface of the heat exchanger tube is equipped with back flow plate, the back flow plate with it is described
Inclined formula setting between heat exchanger.
On the basis of above scheme preferably, the back flow plate is arc-shaped.
The present invention also provides a kind of low energy consumption flue gas purification methods, include the following steps,
Step S1, low-temperature flue gas are about that 6m/s enters in heat exchanger with flow velocity, fire with from combustion gas under the action of air-introduced machine
The high-temperature flue gas of furnace output is burnt under the action of heat exchanger, is warming up to 500 DEG C；
Step S2, the low-temperature flue gas after heating enter fuel gas buring furnace, cooperate and with 269Nm3The natural gas of/h exists
It is mixed and burned in fuel gas buring furnace, with flue gas after 800 DEG C -1100 DEG C of acquisition of processing；
Step S3, treated flue gas enter heat exchanger with the speed of 16m/s, carry out heat with cryogenic gas in heat exchanger
Amount exchange, is cooled to 550 DEG C；
Step S4 is rapidly cooled after the gas after cooling enters chilling tower, is cooled to 80 DEG C.
A kind of low energy consumption flue gas purification system of the invention is inputted by the high-temperature gas that will be exported from fuel gas buring furnace
It into heat exchanger, is interacted in heat exchanger with cryogenic gas using high-temperature gas, is fired so that combustion gas will be entered with heating
The cryogenic gas in furnace is burnt, so that the temperature of cryogenic gas is more nearly the ignition temperature in fuel gas buring furnace, to reduce combustion
Natural gas consumption in gas burning furnace, meanwhile, the gas exported from fuel gas buring furnace drops rapidly under the action of cryogenic gas
Temperature, thus to be lowered into the temperature of gas in chilling tower, to reduce the consumption of cooling water in chilling tower.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of low energy consumption flue gas purification system of the invention；
Fig. 2 is the structural block diagram of heat exchanger of the invention；
Fig. 3 is the structure chart of tube bank of the invention；
Fig. 4 is the structure chart of fuel gas buring furnace of the invention；
Fig. 5 is the cross-sectional view of fuel gas buring furnace of the invention；
Fig. 6 is the left view of fuel gas buring furnace of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1, and combine shown in Fig. 3 and Fig. 5, a kind of low energy consumption flue gas purification system of the present invention, including air-introduced machine,
Heat exchanger, fuel gas buring furnace 100 and chilling tower 300, wherein air-introduced machine is as power source, to heat exchanger and fuel gas buring furnace 100
Interior importing gas, heat exchanger is for realizing the transmitting and recycling of heat in flue gas, and fuel gas buring furnace 100 is for in flue gas
VOC, CO in fuel gas buring furnace 100 and O2It is uniformly mixed burning, to reduce the content of oxygen, VOC, CO.
Heat exchanger of the invention includes shell 200 and tube bank 250, and shell 200 is equipped with hot air intake 210, heat outlet
220, cold air import 230 and cold air outlet 240, hot air intake 210 are oppositely arranged with the heat outlet 220, cold air import
230 are oppositely arranged with cold air outlet 240, and tube bank 250 is installed in shell 200, restrain 250 both ends respectively with hot air intake
210 with heat outlet 220 is sealed is connected, air-introduced machine is by cold air import 230 through the external fuel gas buring furnace of cold air outlet 240
The output end of 100 inlet end, fuel gas buring furnace 100 is connected with hot air intake 210, heat outlet 220 and the chilling tower
300 are connected.
When in use, cryogenic oxygen to be processed is introduced in shell 200 by air-introduced machine by cold air import 230, and is passed through
It crosses burning and handles the high-temperature gas exported from the output end of fuel gas buring furnace 100 then going out from the import of tube bank 250 to tube bank 250
Mouthful movement, after, cold air be full of rapidly tube bank 250 around tube bank 250 between carry out heat exchange so that low
Temperature rises after warm flue gas is heated, and high-temperature gas cools down under the action of cryogenic gas, and the cryogenic gas after heating enters combustion
After gas burning furnace 100, since its gas temperature is relatively high, to make its burning institute calorific requirement in fuel gas buring furnace 100
It reduces, to avoid the consume of natural gas.And for from the gas exported in fuel gas buring furnace 100, due to low-temperature flue gas
Effect, reduces rapidly its temperature, and the initial temperature for making it into chilling tower 300 is eased, and reduces its whole temperature.
It please refers to shown in Fig. 4, Fig. 5 and Fig. 6, fuel gas buring furnace 100 of the invention includes inner cylinder 10 and outer cylinder 20, outer cylinder
20 are sleeved on inner cylinder 10, are sleeved on inner cylinder 10 using outer cylinder 20, to avoid the heat loss of inner cylinder 10, it is preferred that inner cylinder
10 form a cavity that is closed and being in vacuum shape with outer cylinder 20.
It is equipped with combustion chamber 11 in inner cylinder 10 of the invention, and is installed with air inlet flow distribution plate 12 in the inlet end of inner cylinder 10 15,
Air inlet flow distribution plate 12 be equipped be in cellular air inlet 13, when gas to be processed into cross air inlet flow distribution plate 12 after, in air inlet
Air inlet 13 on flow distribution plate 12 is divided into multiply gas under acting on；And being equipped on the inner edge surface of inner cylinder 10 of the invention is in spiral shell
The deflector 14 of shape is revolved, gas to be processed is moved along deflector 14 to the gas outlet side of inner cylinder 10, and on inner cylinder 10 also
Equipped with gas inlet 17, gas inlet 17 is arranged on inner cylinder 10 close to 12 side of air inlet flow distribution plate, and in gas inlet
17 external gas inlet pipes 23 of mouth, the inner edge surface of the center line and inner cylinder 10 of gas inlet pipe 23 are tangent.After gas enters, day
Right gas is directed into inner cylinder 10 by gas inlet pipe 23, is collided between natural-gas and gas to be processed in tangent, from
And the two is sufficiently mixed, the gas after the completion of mixing extends including gas to be processed under the action of deflector 14
Action time in cylinder 10, thus to guarantee that gas to be processed is fully burned in combustion chamber 11.
A kind of fuel gas buring furnace 100 of the invention is arranged air inlet flow distribution plate 12 in the inlet end of inner cylinder 10, passes through air inlet
Air inlet 13 on flow distribution plate 12 will import gas to be processed and be divided into multiply air-flow, cooperates gas inlet pipe 23 and inner cylinder
The tangent setting of 10 inner headed face and spiral helicine deflector 14, so that being carried out into the gas to be processed in combustion chamber 11 with combustion gas
It is sufficiently mixed, and due to the effect of deflector 14, strengthens the catalytic combustion time between combustion gas and gas to be processed, Ke Yiyou
Effect ensures the substantially stabilized burning of gas to be processed.
Back flow plate 21 is additionally provided in inner cylinder 10 of the invention, back flow plate 21 and inner cylinder 10 are coaxially disposed, and back flow plate 21
It is installed on deflector 14 by ribs 22.Mixed gas under the action of deflector 14, burn forward by spiral, is transporting
During dynamic, the effect for encountering back flow plate 21 can move between adjacent back flow plate 21, further increase gas and burning
Time in room 11 improves its burning time, guarantees the adequacy of its burning.
The bottom of inner cylinder 10 of the invention sets the positioning and fixing of support plate realization and outer cylinder 20, and air inlet flow distribution plate 12 is set to
The top of outer cylinder 20, and air inlet 13 is arranged on air inlet flow distribution plate 12 corresponding to the internal diameter of inner cylinder 10.
Inner cylinder 10 of the invention is made of 316L stainless steel material, and outer cylinder 20 is made of 304 stainless steel materials, outer cylinder
20 outside sets insulating layer, and back flow plate 21 is made of 316L stainless steel material.
Tube bank 250 of the invention is arranged by multiple heat exchanger tubes 251 interval, and the section of heat exchanger tube 251 is in flat
Shape, and protrusion 252 wave-shaped is equipped with along its length direction in the heat exchanger tube 251.
In use, gas to be processed is imported through cold air outlet 240 into combustion furnace by cold air import 230, pass through
Combustion furnace treated gas, then through hot air intake 210 after tube bank 250, then exported by heat outlet 220.
As shown in Figures 2 and 3, heat exchanger of the invention, on shell 200 be arranged hot air intake 210, heat outlet 220,
The both ends for restraining 250 are distinguished hot gas air inlet 210 and are connected with hot gas gas outlet 220 by cold air import 230 and cold air outlet 240
It is logical, so that being full of in tube bank 250 after hot gas enters tube bank 250, pass through heat exchanger tube 251 with the cryogenic gas in shell 200
Heat exchange is carried out, so that cryogenic gas be heated, to improve the temperature for entering gas in combustion furnace, reduces the combustion in combustion furnace
Gas content, meanwhile, the high-temperature gas after heat release, temperature reduces, to reduce the loss of cooling water in cooling tower, improves
The energy utilization rate of whole system.
It is worth noting that its structure of heat exchanger of the invention in flat, by the flat of heat exchanger, increases height
Contact area between wet body and cryogenic gas, and the cross-shaped setting of protrusion 252 of adjacent heat exchange device, so that changing
Gap between hot device forms the bottleneck shape structure of variation, as shown in figure 3, pressure of the cryogenic gas in shell 200 is increased,
So that cryogenic gas comes into full contact with heat exchanger tube 251, to guarantee heating of the high-temperature gas to cryogenic gas, guarantee its heat exchange effect
Rate.
Wherein, gentle linkage section 253 is formed between the protrusion 252 on heat exchanger tube 251, on heat exchanger tube 251 protrusion with
Linkage section 253 in adjacent heat exchange tubes 251 is correspondingly arranged.So that gap Formation cross-section between adjacent heat exchange tubes 251 by
Become smaller greatly, the state changed from small to big forms certain pressure so that when the entrance of cryogenic gas, with guarantee cryogenic gas with
Contact between heat exchanger tube 251, to ensure heat exchange efficiency.
Please continue to refer to shown in Fig. 3, the outer edge surface of heat exchanger tube 251 of the invention is equipped with back flow plate 254, back flow plate 254
Inclined formula setting, back flow plate 254 are arc-shaped between heat exchanger.So that cryogenic gas is after entering, due to back flow plate
254 effect generates delay, increases heat-exchange time, improves heat exchange efficiency, improves the heat utilization ratio of high-temperature gas.
Preferably, heat exchanger tube 251 of the invention is ratio-frequency welding helical fin seamless steel pipe.
Further, it is installed with filter plate equipped with detachable also at cold air import 230, filter plate is equipped with filtering
Hole.In use, the dust inside low-temperature flue gas, the substance of grease one kind can be filtered by the effect of filter plate, it is possible to reduce
Stop cleaning number, while guaranteeing the long-term heat transfer effect of 251 beam 250 of heat exchanger tube.
Since the operating temperature range of fuel gas buring furnace 100 is between 100 DEG C -800 DEG C, making for 2205 materials is exceeded
With range (2205 the upper limit temperature of heat tolerance are 350 DEG C or so), it is 1150 DEG C that S310S material highest, which persistently uses temperature, but chlorine
Ion corrosion resistance is poor, therefore heat exchanger tube 251 and structural member material selection S31603 of the invention, and maximum operation (service) temperature can be with
Reach 800 DEG C or more.
The present invention also provides a kind of low energy consumption flue gas purification methods, include the following steps,
Step S1, low-temperature flue gas are about that 6m/s enters in heat exchanger with flow velocity, fire with from combustion gas under the action of air-introduced machine
The high-temperature flue gas of the output of furnace 100 is burnt under the action of heat exchanger, is warming up to 500 DEG C；
Step S2, the low-temperature flue gas after heating enter fuel gas buring furnace 100, cooperate and with 269Nm3/ h's is natural
Gas is mixed and burned in fuel gas buring furnace 100, with flue gas after 800 DEG C -1100 DEG C of acquisition of processing；
Step S3, treated flue gas enter heat exchanger with the speed of 16m/s, carry out heat with cryogenic gas in heat exchanger
Amount exchange, is cooled to 550 DEG C；
Step S4 is rapidly cooled after the gas after cooling enters chilling tower 300, is cooled to 80 DEG C.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of low energy consumption flue gas purification system, which is characterized in that including air-introduced machine, heat exchanger, fuel gas buring furnace and chilling tower,
The heat exchanger includes shell and tube bank, and the shell is equipped with hot air intake, heat outlet, cold air import and cold air outlet,
The hot air intake is oppositely arranged with the heat outlet, and the cold air import is oppositely arranged with the cold air outlet, the pipe
Get one's things ready and be located in the shell, the both ends of the tube bank respectively with the hot air intake and heat outlet is sealed is connected,
Inlet end of the air-introduced machine by the cold air import through the external fuel gas buring furnace of the cold air outlet, the combustion gas combustion
The output end for burning furnace is connected with the hot air intake, and the heat outlet is connected with the chilling tower.
2. a kind of low energy consumption flue gas purification system as described in claim 1, which is characterized in that the fuel gas buring furnace includes interior
Cylinder and outer cylinder, the outer sleeve are equipped with combustion chamber on the inner cylinder in the inner cylinder, and fill in one end of the inner cylinder
Equipped with air inlet flow distribution plate, it is in cellular air inlet that the air inlet flow distribution plate, which is equipped with, and the inner edge surface of the inner cylinder, which is equipped with, is in
Spiral helicine deflector is additionally provided with gas inlet, the external gas inlet pipe of gas inlet, the combustion on the inner cylinder
The center line of gas air inlet pipe and the inner edge surface of the inner cylinder are tangent.
3. a kind of low energy consumption flue gas purification system as claimed in claim 2, which is characterized in that be additionally provided with reflux in the inner cylinder
Plate, the back flow plate and the inner cylinder are coaxially disposed, and the back flow plate is installed on the deflector by ribs.
4. a kind of low energy consumption flue gas purification system as claimed in claim 2, which is characterized in that the bottom of the inner cylinder sets support
Plate realizes the positioning and fixing with outer cylinder, and the air inlet flow distribution plate is set to the top of the outer cylinder, and air inlet setting exists
On the air inlet flow distribution plate corresponding to the internal diameter of the inner cylinder.
5. a kind of low energy consumption flue gas purification system as described in claim 1, which is characterized in that the heat exchanger include shell and
Tube bank, the shell are equipped with hot air intake, heat outlet, cold air import and cold air outlet, the hot air intake and the heat
Gas outlet is oppositely arranged, and the cold air import is oppositely arranged with the cold air outlet, and the tube bank is installed in the shell, institute
The both ends of tube bank are stated respectively with the hot air intake and heat outlet is sealed is connected, and the tube bank is by between multiple heat exchanger tubes
Every being arranged, and the section of the heat exchanger tube is in flat, and being equipped in the heat exchanger tube along its length direction is in wave
The protrusion of shape.
6. a kind of low energy consumption flue gas purification system as claimed in claim 5, which is characterized in that the cold air entrance is equipped with can
Detachable is installed with filter plate, and the filter plate is equipped with filter hole.
7. a kind of low energy consumption flue gas purification system as described in claim 1, which is characterized in that the tube bank is by multiple heat exchanger tubes
Interval is arranged, and the section of the heat exchanger tube is in flat, and being equipped in the heat exchanger tube along its length direction is in wave
The protrusion of wave-like.
8. a kind of low energy consumption flue gas purification system as claimed in claim 7, which is characterized in that on the outer edge surface of the heat exchanger tube
Equipped with back flow plate, inclined formula setting between the back flow plate and the heat exchanger.
9. a kind of low energy consumption flue gas purification system as claimed in claim 8, which is characterized in that the back flow plate is arc-shaped.
10. a kind of low energy consumption flue gas purification method, which is characterized in that include the following steps,
Step S1, low-temperature flue gas are about that 6m/s enters in heat exchanger with flow velocity under the action of air-introduced machine, and from fuel gas buring furnace
The high-temperature flue gas of output is warming up to 500 DEG C under the action of heat exchanger；
Step S2, the low-temperature flue gas after heating enter fuel gas buring furnace, cooperate and with 269Nm3The natural gas of/h is fired in combustion gas
It burns in furnace and is mixed and burned, with flue gas after 800 DEG C -1100 DEG C of acquisition of processing；
Step S3, treated flue gas enter heat exchanger with the speed of 16m/s, carry out heat friendship with cryogenic gas in heat exchanger
It changes, is cooled to 550 DEG C；
Step S4 is rapidly cooled after the gas after cooling enters chilling tower, is cooled to 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750546.1A CN110425551A (en) | 2019-08-14 | 2019-08-14 | A kind of low energy consumption flue gas purification system and its purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910750546.1A CN110425551A (en) | 2019-08-14 | 2019-08-14 | A kind of low energy consumption flue gas purification system and its purification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110425551A true CN110425551A (en) | 2019-11-08 |
Family
ID=68414695
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| CN201910750546.1A Pending CN110425551A (en) | 2019-08-14 | 2019-08-14 | A kind of low energy consumption flue gas purification system and its purification method |
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| ES198962U (en) * | 1972-12-20 | 1975-07-01 | Comb Eng Inc | Chamber of combustión of dry and wet collection, of matters in particles. (Machine-translation by Google Translate, not legally binding) |
| US5477846A (en) * | 1994-08-17 | 1995-12-26 | Cameron; Gordon M. | Furnace-heat exchanger preheating system |
| JP3048361B1 (en) * | 1999-06-10 | 2000-06-05 | 有限会社 山形マルテイ | Dioxin reduction equipment and heat radiation equipment in incinerators. |
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