CN207247926U - A kind of pure oxygen tubular heater - Google Patents
A kind of pure oxygen tubular heater Download PDFInfo
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- CN207247926U CN207247926U CN201721233124.XU CN201721233124U CN207247926U CN 207247926 U CN207247926 U CN 207247926U CN 201721233124 U CN201721233124 U CN 201721233124U CN 207247926 U CN207247926 U CN 207247926U
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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
- Y02E20/32—Direct CO2 mitigation
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a kind of pure oxygen tubular heater, including heating furnace body and fuel supply device, circulating fan, apparatus of oxygen supply and the first waste-heat recoverer are further included；The exhanst gas outlet of heating furnace body passes through pipeline and the inlet communication of circulating fan；The outlet of circulating fan is two-way by line branching, the respectively first branch and the second branch, the oxygen outlet pipeline of the first branch and apparatus of oxygen supply is passed through after converging in the air inlet of heating furnace body, the second branch leads to the heat source import of the first waste-heat recoverer, and the thermal source outlet of the first waste-heat recoverer leads to air by pipeline；The discharge port of fuel supply device is passed through by pipeline in the air inlet of heating furnace body.The utility model improves combustion intensity, avoids pollution of the nitrogen oxides to environment by the use of the mixed gas of flue gas and pure oxygen as combustion medium, while the heat in flue gas is fully used, and reduces energy consumption, has saved cost；Further can also output accessory substance carbon dioxide and nitrogen.
Description
Technical field
A kind of pure oxygen tubular heater is the utility model is related to, belongs to heating furnace field.
Background technology
Tubular heater is the important heating equipment used in petroleum refining, petrochemical industry, chemical fertilizer, chemical fibre industry, its profit
It is heat source that thermal-flame is produced in stove chamber inner combustion with fuel, the material of furnace tubing high speed flowing, make its in pipe into
Row chemical reaction, or reach the temperature required by subsequent technique process.
The mode of heating of existing heating furnace burns for fuel under conditions of air, low, discharge there are combustion intensity
There is the problems such as heat in nitrogen oxides pollution, flue gas cannot make full use of in flue gas.And in flue gas a large amount of nitrogen presence, make
Into flue gas emission thermal loss；Nitrogen is atomic gas at the same time, and almost without radianting capacity, radiation heat transfer is that heating furnace heat exchange is main
One of mode, in the case where regular air is combustion-supporting, the nitrogen proportion of radiationless ability is very high, therefore the blackness of flue gas
It is very low, it have impact on heat transfer of the flue gas to boiler tube radiation heat transfer face.
Utility model content
In order to solve combustion intensity existing for heating furnace in the prior art it is low, discharge flue gas in have nitrogen oxides pollution,
The defects of heat in flue gas cannot make full use of, the utility model provide a kind of pure oxygen tubular heater.
In order to solve the above technical problems, technical solution is as follows used by the utility model：
A kind of pure oxygen tubular heater, including heating furnace body and fuel supply device, further include circulating fan, oxygen supply dress
Put and the first waste-heat recoverer；The exhanst gas outlet of heating furnace body passes through pipeline and the inlet communication of circulating fan；Circulating fan
Outlet by line branching be two-way, be respectively the first branch and the second branch, the oxygen of the first branch and apparatus of oxygen supply goes out
Mouth pipeline is passed through in the air inlet of heating furnace body after converging, and the second branch leads to the heat source import of the first waste-heat recoverer, the
The thermal source outlet of one waste-heat recoverer leads to air by pipeline；The discharge port of fuel supply device is passed through heating furnace by pipeline
In the air inlet of body.
Combustion product gases conduct heat via radiation in heating furnace, after convection current heat transfer, pass through circulating fan and enter following for the first branch
Ring flue gas mix with the pure oxygen (purity be more than 95%) in apparatus of oxygen supply, and oxygen concentration control is mixed 20~50% in mixed gas
Close the combustion-supporting fuel of burner that gas enters tubular heater；Improved in gaseous mixture almost without nitrogen, radiation intensity, burner hearth temperature
Degree has appropriate reduction.
Above-mentioned flue gas enters circulating fan, carries out closed cycle, and fan outlet divides two-way, is recycled back to all the way with oxygen mix
Heating furnace, another way are discharged, or carry out carbon dioxide production through waste-heat recoverer after recycling available energy therein；Heating
It is carbon dioxide and water that fire grate, which puts flue gas main component, and since the gasification latent heat of vapor is big, smoke evacuation water content is high, is conducive to pre-
The recycling of heat, after condensate moisture, main component is carbon dioxide in gas, is conducive to recycle.
It is the prior art to heat and burner is equipped with furnace body, during using air-breathing nozzles, controls oxygen in gaseous mixture
Volumetric concentration is 20~32%, is that control in gaseous mixture oxygen volumetric concentration be 32%~50% using oxygen-enriched combustion-supporting nozzles.
In order to by the energy of off-gas recovery for heating furnace burn, pure oxygen tubular heater, further include oxygen preheater and
Fuel air preheater, the oxygen outlet pipeline of apparatus of oxygen supply are passed through the low-temperature receiver import of oxygen preheater, the low-temperature receiver of oxygen preheater
Outlet is passed through after being converged by pipeline and the first branch in the air inlet of heating furnace body；The second branch leads to oxygen preheater
Heat source import, the thermal source outlet of oxygen preheater are connected by pipeline with the heat source import of fuel air preheater, fuel gas preheating
The thermal source outlet of device is connected by pipeline with the heat source import of the first pre- heat regenerator, and the thermal source outlet of the first pre- heat regenerator leads to
Cross pipeline and lead to air；The discharge port of fuel supply device passes through pipeline and the low-temperature receiver inlet communication of fuel air preheater, fuel
The low-temperature receiver outlet of air preheater is passed through by pipeline in the air inlet of heating furnace body.So pass through the flue gas pair in the second branch
Oxygen and fuel gas are preheated, and the flue gas in the second branch is successively after oxygen preheater and fuel air preheater, then pass through
The first pre- heat regenerator recovery waste heat is crossed, is finally vented, or lead to carbon dioxide collecting device.It so can further reduce energy
Consumption.
In order to further improve the recycling of energy, while extend the service life of wind turbine, pure oxygen tubular heater, also
Including the second waste-heat recoverer, the exhanst gas outlet for heating furnace body is connected by the heat source import of pipeline and the second waste-heat recoverer
Logical, the thermal source outlet of the second waste-heat recoverer passes through pipeline and the inlet communication of circulating fan.Excessive flue-gas temperature can be to following
Ring wind turbine causes certain damage, therefore, in order to extend the service life of wind turbine, before wind turbine is entered, first by flue-gas temperature
Lower.The flue-gas temperature in flue gas of heating furnace exit is 1000-300 DEG C, and the flue-gas temperature after the second waste-heat recoverer is
500-150 DEG C, the temperature of the oxygen after oxygen preheater heats is no more than 150 DEG C, after the first pre- heat regenerator
Flue-gas temperature is less than 100 DEG C, so the latent heat of water can be made to be fully utilized, while carbon dioxide collected by raising is pure
Degree.
The first heat regenerator of the application and the second waste-heat recoverer can be heat pipe, heat pump, heat exchanger, waste heat boiler etc..
In order to improve adaptability, oxygen preheater and fuel air preheater are plate heat exchanger.So can be further
Improve heat exchange efficiency.
First heat regenerator, the second waste-heat recoverer, oxygen preheater and fuel air preheater respectively include heat source into
Mouth, thermal source outlet, low-temperature receiver import and low-temperature receiver outlet, flue gas from heat source import enter, from thermal source outlet flow out, material to be heated from
Low-temperature receiver import enters, and exports and flows out from low-temperature receiver, it is achieved thereby that the heat exchange of Cooling and Heat Source.
In order to further reduce pure oxygen tubular heater operating cost, pure oxygen tubular heater, further includes oxygen equilibrium storage
Tank, the air inlet and atmosphere of apparatus of oxygen supply, the oxygen outlet of apparatus of oxygen supply are connected with the air inlet of oxygen equilibrium storage tank, oxygen
The gas outlet of gas balancing tank imports the first branch by pipeline.It is above-mentioned that oxygen is produced using air as raw material, while pair can also be obtained
Product nitrogen gas, significantly reduces energy consumption and cost.
The application apparatus of oxygen supply can be physics deep cooling oxygen or PSA pressure swing adsorption oxygen making devices, will using air as raw material
Oxygen and nitrogen separation in air, oxygen are flowed out from the oxygen outlet of apparatus of oxygen supply, nitrogen outlet of the nitrogen from apparatus of oxygen supply
Outflow, into storage nitrogen device.Which kind of device is selected according to heating furnace scale from economy point.
For the ease of accurate control gas ratio, the first branch before converging with the export pipeline of apparatus of oxygen supply is equipped with the
Flow meters；The oxygen outlet pipeline of oxygen storage device before converging with the first branch is equipped with second flowmeter.
Organic-fuel burns, and main production carbon dioxide and water, water are condensed into liquid after the first waste-heat recoverer, its
Remaining predominantly carbon dioxide, in order to collect carbon dioxide, above-mentioned pure oxygen tubular heater, further includes Carbon dioxide collector, the
The thermal source outlet of one waste-heat recoverer is connected by pipeline with Carbon dioxide collector.
In order to improve the purity of carbon dioxide, between the thermal source outlet and Carbon dioxide collector of the first waste-heat recoverer
Pipeline is equipped with water knockout drum.The carbon dioxide of high-purity is so not only can obtain, and can realize the recycling of water.
The unmentioned technology of the utility model is with reference to the prior art.
The utility model pure oxygen tubular heater, by the use of the mixed gas of flue gas and pure oxygen as combustion-supporting medium, improves
Combustion intensity, avoids pollution of the nitrogen oxides to environment, while the heat in flue gas is fully used, and reduces energy
Consumption, has saved cost；Further can also output accessory substance carbon dioxide and nitrogen.
Brief description of the drawings
Fig. 1 is the utility model pure oxygen tubular heater structure diagram；
In figure, 1 heating furnace body, 2 circulating fans, 3 apparatuss of oxygen supply, 4 first waste-heat recoverers, 5 second waste-heat recoverers,
6 be fuel gas, 7 oxygen preheaters, 8 fuel air preheaters, 9 water knockout drums, 10 Carbon dioxide collectors, 11 water, 12 titanium dioxides
Carbon, 13 air, 14 nitrogen.
Embodiment
The utility model in order to better understand, the content of the utility model is furtherd elucidate with reference to embodiment, but
The content of the utility model is not limited solely to the following examples.
Embodiment 1
As shown in the figure, a kind of pure oxygen tubular heater, including heating furnace body and fuel supply device, further include circulated air
Machine, apparatus of oxygen supply and the first waste-heat recoverer；The exhanst gas outlet of heating furnace body passes through pipeline and the inlet communication of circulating fan；
The outlet of circulating fan is two-way by line branching, respectively the first branch and the second branch, the first branch and apparatus of oxygen supply
Oxygen outlet pipeline converge after be passed through heating furnace body air inlet in, the second branch leads to the heat source of the first waste-heat recoverer
Import, the thermal source outlet of the first waste-heat recoverer lead to air by pipeline；The discharge port of fuel supply device is led to by pipeline
Enter to heat in the air inlet of furnace body.Enter heating furnace body after partial fume is mixed with pure oxygen during burning as combustion-supporting medium,
Nitrogen is practically free of, improves combustion intensity.
Embodiment 2
It is substantially the same manner as Example 1, except that：Pure oxygen tubular heater, further includes oxygen preheater and fuel gas
Preheater, the oxygen outlet pipeline of apparatus of oxygen supply are passed through the low-temperature receiver import of oxygen preheater, and the low-temperature receiver outlet of oxygen preheater is logical
Cross after pipeline converges with the first branch and be passed through in the air inlet of heating furnace body；The second branch lead to the heat source of oxygen preheater into
Mouthful, the thermal source outlet of oxygen preheater is connected by pipeline with the heat source import of fuel air preheater, the heat of fuel air preheater
Source outlet is connected by pipeline with the heat source import of the first pre- heat regenerator, and the thermal source outlet of the first pre- heat regenerator passes through pipeline
Lead to air；The discharge port of fuel supply device passes through pipeline and the low-temperature receiver inlet communication of fuel air preheater, fuel gas preheating
The low-temperature receiver outlet of device is passed through by pipeline in the air inlet of heating furnace body；Oxygen preheater and fuel air preheater are board-like
Heat exchanger.Oxygen and fuel gas enter heating furnace body after smoke pre-heating respectively, and enabled amount is fully used, and improve
Efficiency of combustion.
Embodiment 3
It is substantially the same manner as Example 2, except that：Pure oxygen tubular heater, further includes the second waste-heat recoverer, heating
The exhanst gas outlet of furnace body is connected by pipeline with the heat source import of the second waste-heat recoverer, and the heat source of the second waste-heat recoverer goes out
Mouth passes through pipeline and the inlet communication of circulating fan.The service life of circulating fan can so be extended, while again by flue gas heat
It is fully used.
Embodiment 4
It is substantially the same manner as Example 3, except that：Pure oxygen tubular heater, further includes oxygen equilibrium storage tank and storage nitrogen
Device, the air inlet and atmosphere of apparatus of oxygen supply, the oxygen outlet of apparatus of oxygen supply are connected with the air inlet of oxygen equilibrium storage tank,
The gas outlet of oxygen equilibrium storage tank imports the first branch by pipeline；The nitrogen outlet of apparatus of oxygen supply passes through pipeline and storage nitrogen device
Air inlet connection.The first branch before converging with the export pipeline of apparatus of oxygen supply is equipped with first flowmeter；With the first branch
The oxygen outlet pipeline of apparatus of oxygen supply before converging is equipped with second flowmeter.The stability of burning is so improved, at the same time will
The nitrogen that apparatus of oxygen supply produces is collected, and apparatus of oxygen supply is using air as raw material, by the predominant gas oxygen and nitrogen in air
Gas is separated, and generates oxygen as combustion-supporting medium, and nitrogen is collected for use as him and uses.
Embodiment 5
It is substantially the same manner as Example 4, except that：Pure oxygen tubular heater, further includes Carbon dioxide collector, and first
The thermal source outlet of waste-heat recoverer is connected by pipeline with Carbon dioxide collector.The thermal source outlet of first waste-heat recoverer and two
Pipeline between carbonoxide collector is equipped with water knockout drum.Using organic matter as fuel, oxygen is caused as combustion-supporting medium
Flue gas is made of carbon dioxide and water, and wherein water is collected after water knockout drum, and carbon dioxide enters Carbon dioxide collector.
Exemplified by using methane as fuel (volume ratio)：Caused flue gas composition is 1/3 carbon dioxide, 2/3 vapor,
The flue gas recirculation of 50-80% (percent by volume), it is combustion-supporting into heating furnace with the oxygen mix of 20-50% (percent by volume),
The nitrogen that deaerating plant produces is collected for use as him to use, by the use of the mixed gas of flue gas and pure oxygen as combustion-supporting medium, is improved
Combustion intensity, avoids pollution of the nitrogen oxides to environment, while the heat in flue gas is fully used, and reduces energy
Consumption, has saved cost；Further can also output accessory substance carbon dioxide and nitrogen.
Claims (10)
1. a kind of pure oxygen tubular heater, including heating furnace body and fuel supply device, it is characterised in that：Further include circulated air
Machine, apparatus of oxygen supply and the first waste-heat recoverer；The exhanst gas outlet of heating furnace body passes through pipeline and the inlet communication of circulating fan；
The outlet of circulating fan is two-way by line branching, respectively the first branch and the second branch, the first branch and apparatus of oxygen supply
Oxygen outlet pipeline converge after be passed through heating furnace body air inlet in, the second branch leads to the heat source of the first waste-heat recoverer
Import, the thermal source outlet of the first waste-heat recoverer lead to air by pipeline；The discharge port of fuel supply device is led to by pipeline
Enter to heat in the air inlet of furnace body.
2. pure oxygen tubular heater as claimed in claim 1, it is characterised in that：Further include oxygen preheater and fuel gas preheating
Device, the oxygen outlet pipeline of apparatus of oxygen supply are passed through the low-temperature receiver import of oxygen preheater, and the low-temperature receiver outlet of oxygen preheater passes through pipe
Road is passed through after converging with the first branch in the air inlet of heating furnace body；The second branch leads to the heat source import of oxygen preheater,
The thermal source outlet of oxygen preheater is connected by pipeline with the heat source import of fuel air preheater, and the heat source of fuel air preheater goes out
Mouth is connected by pipeline with the heat source import of the first pre- heat regenerator, and the thermal source outlet of the first pre- heat regenerator is led to by pipeline
Air；The discharge port of fuel supply device by the low-temperature receiver inlet communication of pipeline and fuel air preheater, fuel air preheater
Low-temperature receiver outlet is passed through by pipeline in the air inlet of heating furnace body.
3. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Oxygen preheater and fuel air preheater
It is plate heat exchanger.
4. pure oxygen tubular heater as claimed in claim 3, it is characterised in that：Further include the second waste-heat recoverer, heating furnace
The exhanst gas outlet of body is connected by pipeline with the heat source import of the second waste-heat recoverer, the thermal source outlet of the second waste-heat recoverer
Pass through pipeline and the inlet communication of circulating fan.
5. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Further include oxygen equilibrium storage tank, oxygen supply dress
The air inlet and atmosphere put, the oxygen outlet of apparatus of oxygen supply are connected with the air inlet of oxygen equilibrium storage tank, oxygen equilibrium storage
The gas outlet of tank imports the first branch by pipeline.
6. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Storage nitrogen device is further included, apparatus of oxygen supply
Nitrogen outlet is connected by pipeline with storing up the air inlet of nitrogen device.
7. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Converge with the export pipeline of apparatus of oxygen supply
The preceding first branch is equipped with first flowmeter.
8. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Oxygen supply dress before converging with the first branch
The oxygen outlet pipeline put is equipped with second flowmeter.
9. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：Further include Carbon dioxide collector, first
The thermal source outlet of waste-heat recoverer is connected by pipeline with Carbon dioxide collector.
10. pure oxygen tubular heater as claimed in claim 1 or 2, it is characterised in that：The thermal source outlet of first waste-heat recoverer
Pipeline between Carbon dioxide collector is equipped with water knockout drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233124.XU CN207247926U (en) | 2017-09-25 | 2017-09-25 | A kind of pure oxygen tubular heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233124.XU CN207247926U (en) | 2017-09-25 | 2017-09-25 | A kind of pure oxygen tubular heater |
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| Publication Number | Publication Date |
|---|---|
| CN207247926U true CN207247926U (en) | 2018-04-17 |
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ID=61886872
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721233124.XU Active CN207247926U (en) | 2017-09-25 | 2017-09-25 | A kind of pure oxygen tubular heater |
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| CN (1) | CN207247926U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761273A (en) * | 2019-01-29 | 2019-05-17 | 北京拓首能源科技股份有限公司 | A kind of oxygen heating furnace |
| CN114777509A (en) * | 2022-05-07 | 2022-07-22 | 山东京博石油化工有限公司 | Heating furnace flue gas circulating combustion system and method |
| CN115055030A (en) * | 2022-06-10 | 2022-09-16 | 中国石油大学(北京) | Heating furnace operation method with zero carbon dioxide emission |
| CN116576683A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Environment-friendly energy-saving system for graphite production |
-
2017
- 2017-09-25 CN CN201721233124.XU patent/CN207247926U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761273A (en) * | 2019-01-29 | 2019-05-17 | 北京拓首能源科技股份有限公司 | A kind of oxygen heating furnace |
| CN114777509A (en) * | 2022-05-07 | 2022-07-22 | 山东京博石油化工有限公司 | Heating furnace flue gas circulating combustion system and method |
| CN115055030A (en) * | 2022-06-10 | 2022-09-16 | 中国石油大学(北京) | Heating furnace operation method with zero carbon dioxide emission |
| CN116576683A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Environment-friendly energy-saving system for graphite production |
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