CN107235475A - Inexpensive nitrogen-free burning oxygen generation system - Google Patents
Inexpensive nitrogen-free burning oxygen generation system Download PDFInfo
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- CN107235475A CN107235475A CN201710478823.9A CN201710478823A CN107235475A CN 107235475 A CN107235475 A CN 107235475A CN 201710478823 A CN201710478823 A CN 201710478823A CN 107235475 A CN107235475 A CN 107235475A
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- oxygen
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention provides a kind of inexpensive nitrogen-free burning oxygen generation system.The inexpensive nitrogen-free burning oxygen generation system includes：Fuel element, oxygen preparation unit and heat energy kinetic energy conversion unit；Fuel element, which is provided with, helps fuel gas inlet, fuel inlet and exhanst gas outlet；Oxygen preparation unit is used to come out the oxygen separation in air；Heat energy kinetic energy conversion unit is connected with exhanst gas outlet, for the conversion of heat into kinetic energy in the flue gas of discharging exhanst gas outlet, and heat energy kinetic energy conversion unit is connected with oxygen preparation unit, kinetic energy is supplied into oxygen preparation unit.The above-mentioned inexpensive nitrogen-free burning oxygen generation system that the application is provided reduces the conversion process of energy of kinetic energy-electric energy and electric energy-kinetic energy, and then reduces the energy dissipation in conversion process of energy, improves capacity usage ratio, and reduce the preparation cost of oxygen.
Description
Technical field
The present invention relates to fossil energy combustion field, in particular to a kind of inexpensive nitrogen-free burning oxygen generation system.
Background technology
China is that a few is using coal as one of country of main energy sources in the world, according to statistics, the titanium dioxide of China 90%
Sulphur, 67% nitrogen oxides, 70% smoke discharge amount come from the burning of coal.Wherein, coal fired power plant, coal-burned industrial boiler, combustion
The smoke emissioning pollution such as coal stove kiln problem is protruded the most.
New policy is drafted in Beijing within 2015, comprising claimed below in the new policy：The newly-built combustion gas in Beijing whole city (oil) boiler
Discharged nitrous oxides concentration need to perform the emission limit of 30 milligrams/cubic metre.To reach the environmental requirement of correlation, Beijing early
Environmental Protection Agency also issues to administer on in-depth combustion gas (oil) boiler nitrogen oxides recently ensures the notice of pollutant discharge in compliance with the standard, it is desirable to
Combustion gas (oil) boiler owner in the whole city's will ensure to reach this city comprehensively from 1 day April in 2017《Emission standard of air pollutants for boilers》
(DB11/139-2015).To coordinate the implementation of new standard, Beijing encourages discharge unit by giving rewards in place of subsidies and increasing punishing
Carry out low nitrogen technological transformation.
Oxygen-enriched combusting is that one kind can improve efficiency of combustion, and the combustion technology of pollutant emission can be reduced again.Oxygen-enriched combusting
It is to replace air with oxygen or flue gas, preventing N2Enter in combustion system, to avoid the generation of nitrogen oxides in combustion product.
Oxygen-enriched combustion technology (also known as O2/CO2Combustion technology) it is by the way of flue gas recirculation, to be obtained using being separated from air
Pure oxygen and a part of boiler smoke constitute gaseous mixture instead of air as burning when oxidant, to improve in combustion exhaust gas
CO2Concentration.Oxygen-enriched combustion technology can not only separate and collect CO2SO can also be handled2, but the air separation in oxygen-enriched combustion system
Oxygen preparation unit high energy consumption, system of unit oxygen cost is more than 0.7KW.h/m3。
Combustion of natural gas process：CH4+2O2→CO2+2H2O.Oxygen cost processed accounts for 15% left side of system combustion heat release calorific value
The right side, if combustion power generation, oxygen cost processed accounts for can be worth 30% that generates electricity, and oxygen cost processed is high, and economy is poor.Limit richness
The application to engineering practice of oxygen combustion power generation technology, for oxygen cost processed it is higher the problem of, effective solution party is not yet proposed at present
Case.
Oxygen consumption is more during combustion of natural gas, the methane of 1 normal volume, the oxygen of 2 normal volumes of consumption, and tradition oxygen processed
Technique mainly has two kinds, is low-temperature deep oxygen and omnibus control system respectively, and oxygen cost processed is higher,
In low-temperature deep oxygen technological process, it is air compression unit and swell refrigeration unit, expanding machine to consume energy larger
Power consumption is larger, at present, and power needed for compressor and expansion refrigerator operation mostlys come from extraneous power network supply, consumes energy higher.
Omnibus control system technological process (VPA), mainly uses adsorbent to gas with various in adsorbance, absorption speed
The characteristic that the adsorption capacity of difference and adsorbent in terms of degree, absorption affinity changes with the change of pressure, in pressurized conditions
The lower adsorption separation process for completing mixed gas, the adsorbed impurity composition of decompression parsing.In omnibus control system technological process
The larger mainly compressor of power consumption, vavuum pump power consumption are higher.
The content of the invention
It is a primary object of the present invention to provide a kind of inexpensive nitrogen-free burning oxygen generation system, to solve existing oxygen system
The problem of energy consumption that standby technique is present is higher.
To achieve these goals, according to an aspect of the present invention there is provided a kind of inexpensive nitrogen-free burning oxygen system processed
System, inexpensive nitrogen-free burning oxygen generation system includes：Fuel element, is provided with and helps fuel gas inlet, fuel inlet and exhanst gas outlet；Oxygen
Gas preparation unit, for the oxygen separation in air to be come out；Heat energy kinetic energy conversion unit, heat energy kinetic energy conversion unit and burning
The exhanst gas outlet of unit is connected, and states heat absorption that waste-heat recovery device is used in the flue gas of discharging fuel element using turning
Kinetic energy is turned to, and heat energy kinetic energy conversion unit is connected with oxygen preparation unit, kinetic energy is supplied into oxygen preparation unit.
Further, heat energy kinetic energy conversion unit includes：Waste-heat recovery device, is provided with smoke inlet and steam (vapor) outlet,
Smoke inlet is connected with exhanst gas outlet, for absorbing the heat in flue gas；And steam turbine, it is provided with steam inlet, steam
Entrance is connected with steam (vapor) outlet by steam conveying pipeline.
Further, steam turbine is additionally provided with cycle fluid outlet, and cycle fluid outlet leads to waste-heat recovery device
Cycle fluid transfer pipeline is crossed to be connected；Heat energy kinetic energy conversion unit also includes the first cooling device, and the first cooling device is set
On cycle fluid transfer pipeline.Further, heat energy kinetic energy conversion unit also includes cycle fluid pump, and cycle fluid pump is set
On cycle fluid transfer pipeline between waste-heat recovery device and the first cooling device.
Further, oxygen preparation unit includes：First gas compression set, is provided with the first air intake and compression is empty
Gas is exported；Second cooling device, the second cooling device is connected with compressed air outlet by compressed air conveying pipeline；Cold
Feeding mechanism, for supplying cold for the second cooling device；And rectifier unit, rectifier unit and the second cooling device are empty through liquid
Letter shoot road is connected, for the oxygen separation in air to be come out, wherein, first gas compression set and cold supply dress
Put the kinetic energy driving exported by heat energy kinetic energy conversion unit.
Further, oxygen preparation unit also includes the first air cleaning unit, to remove the water in air, titanium dioxide
Carbon and dust, and the first air cleaning unit is arranged on compressed air conveying pipeline.
Further, rectifier unit is provided with oxygen outlet, and oxygen outlet is with helping fuel gas inlet to pass through oxygen delivery pipeline
It is connected.
Further, waste-heat recovery device is additionally provided with off-gas recovery mouthful, and off-gas recovery mouthful is with helping fuel gas inlet to pass through
Off-gas recovery pipeline is connected.
Further, inexpensive nitrogen-free burning oxygen generation system also includes：Dehydration device, dehydration device is arranged on off-gas recovery
On pipeline；And desulfation dust-extraction device, desulfation dust-extraction device is arranged on the off-gas recovery between dehydration device and waste-heat recovery device
On pipeline.
Further, inexpensive nitrogen-free burning oxygen generation system also includes：Part flow arrangement, part flow arrangement is arranged on dehydration device
On the off-gas recovery pipeline in downstream；And carbon dioxide recovering apparatus, carbon dioxide recovering apparatus is connected with part flow arrangement, is used for
Collect the carbon dioxide distributed from off-gas recovery pipeline.
Apply the technical scheme of the present invention, fuel carries out burning in fuel element can produce substantial amounts of flue gas.By heat energy
Kinetic energy conversion unit is connected with fuel element, and above-mentioned flue gas can be delivered in heat energy conversion unit.Due to above-mentioned flue gas
With higher temperature, thus can be dynamic using being converted into by the heat absorption in above-mentioned flue gas by heat energy kinetic energy conversion unit
Can, and above-mentioned kinetic energy is supplied to oxygen preparation unit.The oxygen processed it follows that the above-mentioned inexpensive nitrogen-free that the application is provided is burnt
System reduces the conversion process of energy of kinetic energy-electric energy and electric energy-kinetic energy, and then reduces the consumption of the energy in conversion process of energy
Damage, improve capacity usage ratio, and reduce the preparation cost of oxygen.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows a kind of inexpensive nitrogen-free burning oxygen generation system of typical embodiment offer according to the present invention
Structural representation；And
Fig. 2 shows a kind of structure of inexpensive nitrogen-free burning oxygen generation system preferred embodiment provided of the present invention
Schematic diagram；
Fig. 3 shows the knot for the inexpensive nitrogen-free burning oxygen generation system that another preferred embodiment of the present invention is provided
Structure schematic diagram.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
A, fuel；B, absorption heat；C, refrigerant；D, air.
10th, fuel element；101st, fuel gas inlet is helped；102nd, fuel inlet；103rd, exhanst gas outlet；20th, oxygen preparation unit；
21st, first gas compression set；211st, the first air intake；212nd, compressed air outlet；22nd, the second cooling device；23rd, cold
Feeding mechanism；24th, rectifier unit；241st, oxygen outlet；25th, the first air cleaning unit；26th, air blower；261st, the second air
Entrance；27th, the second air cleaning unit；28th, adsorption tower；281st, vavuum pump；29th, second gas compression set；30th, heat energy kinetic energy
Conversion unit；31st, waste-heat recovery device；311st, smoke inlet；312nd, steam (vapor) outlet；313rd, off-gas recovery mouthful；32nd, steam is saturating
It is flat；321st, steam inlet；322nd, cycle fluid is exported；33rd, the first cooling device；34th, cycle fluid pump；40th, dehydration device；
50th, desulfation dust-extraction device；60th, part flow arrangement；61st, triple valve；62nd, blower fan；70th, carbon dioxide recovering apparatus；71st, chimney.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As described by background technology, there is the problem of energy consumption is higher in existing oxygen preparation technology.On solving
Technical problem is stated, this application provides a kind of inexpensive nitrogen-free burning oxygen generation system, as shown in figure 1, the inexpensive nitrogen-free burning
Oxygen generation system includes fuel element 10, oxygen preparation unit 20, heat energy kinetic energy conversion unit 30.Wherein, fuel element 10 is set
Help fuel gas inlet 101, fuel inlet 102 and exhanst gas outlet 103；Oxygen preparation unit 20 is used for the oxygen separation in air
Out；Heat energy kinetic energy conversion unit 30 is connected with exhanst gas outlet 103, and heat energy kinetic energy conversion unit 30 and oxygen preparation unit
20 are connected, and to the conversion of heat into kinetic energy in the flue gas of discharging exhanst gas outlet 103, kinetic energy is supplied to oxygen preparation unit
20。
In above-mentioned inexpensive nitrogen-free burning oxygen generation system, fuel carries out burning in fuel element 10 can produce substantial amounts of height
Warm flue gas.Heat energy kinetic energy conversion unit 30 is connected with fuel element 10, above-mentioned high-temperature flue gas heat energy can be delivered to and moved
In energy conversion unit 30.Because above-mentioned flue gas has higher temperature, thus it can be reclaimed by heat energy kinetic energy conversion unit 30
Heat energy in flue gas, is translated into kinetic energy, and above-mentioned kinetic energy is supplied into oxygen preparation unit 20.It follows that the application
The above-mentioned inexpensive nitrogen-free burning oxygen generation system provided reduces the conversion process of energy of kinetic energy-electric energy and electric energy-kinetic energy, and then
The energy dissipation in conversion process of energy is reduced, capacity usage ratio is improved, and reduce the preparation cost of oxygen.Preferably
Above-mentioned fuel element 10 is heating furnace or gas turbine.
Preferably, the inexpensive nitrogen-free burning oxygen generation system that the application is provided also includes oxygen supply device, above-mentioned oxygen
Feeding mechanism is with helping fuel gas inlet 101 to be connected, to supply oxygen to fuel element 10, and this advantageously reduces in combustion process and produced
Raw oxynitrides, and then improve the feature of environmental protection of above-mentioned inexpensive nitrogen-free burning oxygen generation system.
In a preferred embodiment, heat energy kinetic energy conversion unit 30 includes waste-heat recovery device 31 and steam turbine
32nd, waste-heat recovery device 31 is provided with smoke inlet 311 and steam (vapor) outlet 312, and smoke inlet 311 is connected with exhanst gas outlet 103
Logical, waste-heat recovery device 31 is used to absorb the heat in flue gas.Steam turbine 32 is provided with steam inlet 321, and steam inlet
321 are connected with steam (vapor) outlet 312 by steam conveying pipeline.
The operation principle of heat energy kinetic energy conversion unit 30 is：During cycle fluid absorbs the flue gas discharged from fuel element 10
Heat, and form high-temperature steam；Then above-mentioned high-temperature steam enters in steam turbine 32 and drives it to do work, dynamic with external output
Energy.Conversion of heat into kinetic energy in the flue gas that above-mentioned setting can produce fuel element 10, and driven by energy source of kinetic energy
Oxygen preparation unit 20 works, so that the substantial amounts of power consumption needed for saving oxygen preparation unit 20.Above-mentioned cycle fluid
Including but not limited to water.
In a preferred embodiment, steam turbine 32 is additionally provided with cycle fluid outlet 322, and cycle fluid goes out
Mouth 322 is connected with waste-heat recovery device 31 by cycle fluid transfer pipeline；Heat energy kinetic energy conversion unit 30 also includes first
Cooling device 33, the first cooling device 33 is arranged on cycle fluid transfer pipeline.By cycle fluid in waste-heat recovery device 31
Middle absorption converting heat is high-temperature steam, after high-temperature steam does work in steam turbine 32, is entered to through cycle fluid outlet 322
In first cooling device 33, waste-heat recovery device 31 is entered to after cooling, this is conducive to cycle fluid again as cold
Matchmaker absorbs flue gas heat, so that cycle fluid is reused, it is cost-effective.
In a preferred embodiment, heat energy kinetic energy conversion unit 30 also includes cycle fluid pump 34, and circulation industrial
Matter pump 34 is arranged on the cycle fluid transfer pipeline between the cooling device 33 of waste-heat recovery device 31 and first, and this is conducive to carrying
The cycle rate of high circulation working medium.
In a preferred embodiment, oxygen preparation unit 20 is cooled down including first gas compression set 21, second
Device 22, cold feeding mechanism 23 and rectifier unit 24.First gas compression set 21 is provided with the first air intake 211 and pressure
Contracting air outlet slit 212；Second cooling device 22 is connected with compressed air outlet 212 by compressed air conveying pipeline；Cold
Feeding mechanism 23 is used to supply cold for the second cooling device 22；And the cooling device 22 of rectifier unit 24 and second is through liquid air
Transfer pipeline is connected, and first gas compression set 21 and cold feeding mechanism 23 are by moving that heat energy kinetic energy conversion unit 30 is exported
Can driving.
Air is passed through into first gas compression set 21 to be compressed, high pressure wet air (compressed air) is obtained；By high pressure
Humid air is passed through in the second cooling device 22, is translated into liquid air；Cold feeding mechanism 23 is used for cold for above-mentioned second
But device 22 provides cold, while the kinetic energy that steam turbine 32 is exported in heat energy kinetic energy conversion unit 30 is used to drive cold to supply
Device 23 is operated.Liquid air enters to rectifier unit 24, using the difference of oxygen, nitrogen component boiling point, so that oxygen and nitrogen are in essence
Separated in distillation unit 24.Preferably, above-mentioned cold feeding mechanism 23 is swell refrigeration device.Above-mentioned cold feeding mechanism 23 may be used also
To provide cold for dehydration device 40.
In a preferred embodiment, oxygen preparation unit 20 also includes：First air cleaning unit 25, to go
Except the water in air, carbon dioxide and dust, it is arranged on compressed air conveying pipeline.On the transfer pipeline of compressed air,
First air cleaning unit 25 is set, the water in high pressure wet air, carbon dioxide and dust can be removed, this is conducive to carrying
The purity of high liquid air, and then improve the purity for the oxygen that distillation process is obtained.
In a preferred embodiment, the oxygen isolated from rectifier unit 24 is through oxygen outlet 241 and combustion-supporting gas
Entrance 101 is connected by oxygen delivery pipeline.Such setting can be passed through fuel element 10 using oxygen as combustion-supporting gas, and join
With combustion reaction.Due to not including nitrogen in combustion-supporting gas, thus the main component for the obtained flue gas that burns is CO2, and almost do not have
There is the generation of nitrogen oxides, this is conducive to CO2Recovery, belong to green low-carbon energy saving technique process, and then improve it is above-mentioned it is low into
The feature of environmental protection of this nitrogen-free burning oxygen generation system.
In a preferred embodiment, off-gas recovery mouthful 313 is with helping fuel gas inlet 101 to pass through off-gas recovery pipeline phase
Connection.Above-mentioned off-gas recovery mouthful 313 can be conveyed the flue gas Jing Guo heat recovery again with helping fuel gas inlet 101 to be connected
To fuel element 10, fuel element is entered to as combustion-supporting gas using after certain proportion and oxygen mix, on the one hand can improve combustion
Characteristic is burnt, the complete gas that on the other hand do not burn can be reused, and then save process costs.
In a preferred embodiment, inexpensive nitrogen-free burning oxygen generation system also includes dehydration device 40 and desulfurization is removed
Dirt device 50.Dehydration device 40 is arranged on off-gas recovery pipeline；And desulfation dust-extraction device 50 be arranged on dehydration device 40 with it is remaining
On off-gas recovery pipeline between heat reclamation device 31.On off-gas recovery pipeline, dehydration device 40 and desulfurizer is set to have
Beneficial to the moisture and sulfide removed in the secondary flue gas utilized, and then the sour gas in flue gas is advantageously reduced, improve work
The feature of environmental protection of skill.Preferably, above-mentioned dehydration device 40 is heat-exchanger rig.The flue gas excluded from waste-heat recovery device 31 is passed through
State after heat-exchanger rig, the moisture in flue gas can liquefy because of condensation, and then realize the purpose for removing the moisture in flue gas, while water
Dividing to recycle.
In a preferred embodiment, inexpensive nitrogen-free burning oxygen generation system also includes part flow arrangement 60 and titanium dioxide
Carbon retracting device 70.Part flow arrangement 60 is arranged on the off-gas recovery pipeline in the downstream of dehydration device 40.Carbon dioxide recovering apparatus
70 are connected with part flow arrangement 60, for collecting the carbon dioxide distributed from off-gas recovery pipeline.
On the off-gas recovery pipeline in the downstream of dehydration device 40, set part flow arrangement 60, and make above-mentioned part flow arrangement 60 with
Carbon dioxide recovering apparatus 70 is connected.Such setting can be shunted the flue gas in the second smoke conveying duct, be entered
And a certain amount of carbon dioxide is reclaimed as needed.Dress is reclaimed in the above-mentioned preferably carbon dioxide of carbon dioxide recovering apparatus 70 trapping
Put.
It is preferred that, above-mentioned inexpensive nitrogen-free burning oxygen generation system also includes by triple valve 61, and above-mentioned triple valve 61 is respectively at oxygen
Letter shoot and off-gas recovery pipeline are connected, for by the oxygen in the flue gas and oxygen delivery pipeline in off-gas recovery pipeline
After gas mixing, obtained mixed gas delivery to fuel element 10 is then participated in into combustion reaction.
It is preferred that, above-mentioned inexpensive nitrogen-free burning oxygen generation system also includes blower fan 62, and the blower fan 62 is arranged on part flow arrangement 60
On off-gas recovery pipeline between dehydration device 40.
Preferably, the heat energy that the inexpensive nitrogen-free burning oxygen generation system that the application is provided can be exported using heating furnace, and
By above-mentioned heat energy, and convert heat into power-equipment of the transport of kinetic energy to oxygen preparation unit 20, such as compressor, turbine expansion
Machine etc., described system can apply to the fields such as oil, chemical industry, thermal power plant, city thermal, metallurgy, coking.
In a preferred embodiment, as shown in figure 3, above-mentioned oxygen preparation unit 20 is omnibus control system system
System, including air blower 26, the second air cleaning unit 27, second gas compression set 29, adsorption tower 28, vavuum pump 281, and drum
Blower fan 26 be sequentially connected with the second air cleaning unit 27, adsorption tower 28, second gas compression set 29 it is logical, vavuum pump 281 with
Adsorption tower 28 is connected.Air enters air blower 26 through second air intake 261, is then delivered to through the second air delivery pipe
After the second air cleaning unit 27 carries out de-oiling water removal, adsorption tower 28 is entered to.Vavuum pump 281 is connected with adsorption tower 28, nitrogen
Gas and oxygen are separated in adsorption tower 28.The oxygen isolated is delivered to combustion-supporting after being compressed through second gas compression set 29
Gas entrance 101, to provide combustion adjuvant for fuel element 10.Above-mentioned air blower 26 is preferably roots blower.Above-mentioned steam turbine 32
The kinetic energy externally exported is used to blower 26, second gas compression set 29 and vavuum pump 281.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope claimed.
Embodiment 1
As shown in figure 1, this application provides a kind of inexpensive nitrogen-free burning oxygen generation system.Above-mentioned inexpensive nitrogen-free burning system
In oxygen system, oxygen is through helping fuel gas inlet 101, fuel gas to be delivered in fuel element 10 (heating furnace) through fuel inlet 102
Row fully burning, obtains high-temperature flue gas.High-temperature flue gas carries out heat exchange in waste-heat recovery device 31 with cold water medium, obtains low
Warm flue gas.
Above-mentioned low-temperature flue gas is delivered in desulfation dust-extraction device 50 through off-gas recovery mouthful 313, the sulphur in removing low-temperature flue gas
Compound and dust.Then the low-temperature flue gas after desulfurization and dedusting is delivered in dehydration device 40 and condensed, so that above-mentioned low temperature
Condensate moisture in flue gas and removed from low-temperature flue gas.One in low-temperature flue gas after dehydration, desulfurization and dedirt processing
Lease making part flow arrangement 60 (triple valve), which is branched to, helps fuel gas inlet 101 to be delivered to fuel element 10, and participates in combustion reaction；It is another
Part is branched in the collecting carbonic anhydride retracting device of carbon dioxide recovering apparatus 70 through part flow arrangement 60 (triple valve) reclaims two
Carbonoxide, and the fixed gas escaped out in carbon dioxide recovering apparatus 70 is discharged through chimney 71.
The cycle fluid (water) that the heat reclaimed from high-temperature flue gas makes is converted into high-temperature steam, and high-temperature steam enters steam
Done work in turbine 32, and then convert heat into kinetic energy.High-temperature steam is converted into Low Temperature Steam after workmanship, and from steam
Discharged in turbine 32.The Low Temperature Steam of discharge is transmitted back to waste-heat recovery device by the first cooling device 33 and cycle fluid pump 34
31 recycle with Mist heat recovering.
In inexpensive nitrogen-free burning oxygen generation system, air enters first gas compression set by the first air intake 211
21 are compressed to obtain high pressure wet air, and then above-mentioned high pressure wet air is passed through the first air cleaning by compressed air outlet slit 212
Device 25 (filter) is purified, to remove the dust in high pressure wet air, moisture and carbon dioxide.High pressure after purification
Humid air is delivered to cryogenic liquefying in the second cooling device 22 (heat exchanger), obtains liquid air.Then by above-mentioned liquid air
It is delivered to rectifier unit 24 and carries out rectifying, obtains oxygen and nitrogen.Cold wherein needed for the second condensing unit comes from cold
Feeding mechanism 23 (expanding machine) freezes.The driving energy of first gas compression set 21 and cold feeding mechanism 23 (expanding machine) is come
Done work from the steam turbine 32 in waste heat recovery unit.
The above-mentioned inexpensive nitrogen-free burning oxygen generation system of the application, by waste-heat recovery device 31, fuel element 10 is obtained
To high-temperature flue gas reclaimed.The heat energy of recovery is converted to kinetic energy through steam turbine 32, and is driven by energy source of this kinetic energy
Oxygen preparation unit 20, this is conducive to the electric energy saved needed for oxygen preparation unit 20.On the other hand, tradition is substituted with purity oxygen
Air in technique, the main component participated in the combustion reaction of fuel, obtained flue gas is CO2And H2O.Flue gas is removed through desulfurization
After dirt, dehydration, reclaimed into carbon dioxide recovering apparatus 70 (collecting carbonic anhydride retracting device).The CO of recovery2Can be further
Purification is Product-level, realizes preferable economic benefit, reclaims CO2Flue gas afterwards can be through discharging in chimney.
Embodiment 2
As shown in Fig. 2 this application provides a kind of inexpensive nitrogen-free burning oxygen generation system.Above-mentioned inexpensive nitrogen-free burning system
In oxygen system, oxygen is through helping fuel gas inlet 101, fuel gas to be delivered to through fuel inlet 102 in fuel element 10 (gas turbine)
Fully burnt, obtain high-temperature flue gas.High-temperature flue gas carries out heat exchange in waste-heat recovery device 31 with cold water medium, obtains
Low-temperature flue gas.
Above-mentioned low-temperature flue gas is delivered in desulfation dust-extraction device 50 through off-gas recovery mouthful 313, the sulphur in removing low-temperature flue gas
Compound and dust.Then the low-temperature flue gas after desulfurization and dedusting is delivered into dehydration device 40 to be condensed, so that above-mentioned low temperature cigarette
Condensate moisture in gas and removed from low-temperature flue gas.The low-temperature flue gas after dehydration, desulfurization and dedirt processing, a part is through dividing
Device 60 (triple valve) shunting is flowed, by helping fuel gas inlet 101 to be delivered to fuel element 10, and combustion reaction is participated in；Another portion
Lease making part flow arrangement 60 (triple valve) is shunted, and is delivered in carbon dioxide recovering apparatus 70 (collecting carbonic anhydride retracting device) and is returned
Carbon dioxide is received, and the fixed gas escaped out in carbon dioxide recovering apparatus 70 is discharged through chimney 71.
The cycle fluid (water) that the heat reclaimed from high-temperature flue gas makes is converted into high-temperature steam, and high-temperature steam enters steam
Done work in turbine 32, and then convert heat into kinetic energy.High-temperature steam is converted into Low Temperature Steam after workmanship, and from steam
Discharged in turbine 32.The Low Temperature Steam of discharge is transmitted back to waste-heat recovery device by the first cooling device 33 and cycle fluid pump 34
31 recycle with Mist heat recovering.
In inexpensive nitrogen-free burning oxygen generation system, air enters first gas compression set by the first air intake 211
21 are compressed to obtain high pressure wet air, and then above-mentioned high pressure wet air is passed through the first air cleaning by compressed air outlet slit 212
Device 25 (filter) is purified, to remove the dust in high pressure wet air, moisture and carbon dioxide.High pressure after purification
Humid air is delivered to cryogenic liquefying in the second cooling device 22 (heat exchanger), obtains liquid air.Then by above-mentioned liquid air
It is delivered to rectifier unit 24 and carries out rectifying, obtains oxygen and nitrogen.Cold wherein needed for the second condensing unit comes from cold
Feeding mechanism 23 (expanding machine) freezes.And the driving energy of first gas compression set 21 and cold feeding mechanism 23 (expanding machine)
The steam turbine 32 for coming from waste heat recovery unit does work.
The above-mentioned inexpensive nitrogen-free burning oxygen generation system of the application, by waste-heat recovery device 31, by (the combustion of fuel element 10
Gas-turbine) obtained high-temperature flue gas reclaimed.The heat energy of recovery is converted to kinetic energy through steam turbine 32, and using this kinetic energy as energy
Amount source driving oxygen preparation unit 20, this is conducive to the electric energy saved needed for oxygen preparation unit 20.On the other hand, with purity oxygen
The air in traditional handicraft is substituted, the main component participated in the combustion reaction of fuel, obtained flue gas is CO2And H2O.Flue gas
After desulfurization and dedusting, dehydration, into (the CO of carbon dioxide recovering apparatus 702Trap recovery unit) reclaim.The CO of recovery2One can be entered
Step purification is Product-level, realizes preferable economic benefit, reclaims CO2Flue gas afterwards can be through discharging in chimney.
Embodiment 3
As shown in figure 3, this application provides a kind of inexpensive nitrogen-free burning oxygen generation system.Above-mentioned inexpensive nitrogen-free burning system
In oxygen system, oxygen is through helping fuel gas inlet 101, fuel gas to be delivered in fuel element 10 (heating furnace) through fuel inlet 102
Row fully burning, obtains high-temperature flue gas.High-temperature flue gas carries out heat exchange in waste-heat recovery device 31 with cold water medium, obtains low
Warm flue gas.
Above-mentioned low-temperature flue gas is delivered in desulfation dust-extraction device 50 through off-gas recovery mouthful 313, the sulphur in removing low-temperature flue gas
Compound and dust.Then the low-temperature flue gas after desulfurization and dedusting is delivered into dehydration device 40 to be condensed, so that above-mentioned low temperature cigarette
Condensate moisture in gas and removed from low-temperature flue gas.The low-temperature flue gas after dehydration, desulfurization and dedirt processing, a part is through dividing
Device 60 (triple valve) shunting is flowed, by helping fuel gas inlet 101 to be delivered to fuel element 10, and combustion reaction is participated in；Another portion
Lease making part flow arrangement 60 (triple valve) is shunted, and is delivered in the collecting carbonic anhydride retracting device of carbon dioxide recovering apparatus 70 and is reclaimed
Carbon dioxide, and the fixed gas escaped out in carbon dioxide recovering apparatus 70 is discharged through chimney 71.
The cycle fluid (water) that the heat reclaimed from high-temperature flue gas makes is converted into high-temperature steam, and high-temperature steam enters steam
Done work in turbine 32, and then convert heat into kinetic energy.High-temperature steam is converted into Low Temperature Steam after workmanship, and from steam
Discharged in turbine 32.The Low Temperature Steam of discharge is transmitted back to waste-heat recovery device by the first cooling device 33 and cycle fluid pump 34
31 recycle with Mist heat recovering.
In inexpensive nitrogen-free burning oxygen generation system, air enters to the by second air intake 261 into air blower 26
Two air cleaning units 27 are carried out after de-oiling water removal, the air after being purified.Then the air after above-mentioned purification is entered to
In adsorption tower 28, vavuum pump 281 is connected with adsorption tower 28, and the nitrogen and oxygen in air are separated in adsorption tower 28.Above-mentioned steaming
The kinetic energy that vapour turbine 32 is externally exported is used to blower 26, second gas compression set 29 and vavuum pump 281.
The above-mentioned inexpensive nitrogen-free burning oxygen generation system of the application, will be from fuel element 10 by waste-heat recovery device 31
Heat in the high-temperature flue gas of discharge is reclaimed.The heat energy of recovery is converted to kinetic energy through steam turbine 32, and using kinetic energy as energy
Amount source driving oxygen preparation unit 20, this is conducive to the electric energy saved needed for oxygen preparation unit 20.On the other hand, with purity oxygen
The air in traditional handicraft is substituted, the main component participated in the combustion reaction of fuel, obtained flue gas is CO2And H2O.Flue gas
After desulfurization and dedusting, dehydration, reclaimed into carbon dioxide recovering apparatus 70 (collecting carbonic anhydride retracting device).The CO of recovery2
It can purification be further Product-level, realize preferable economic benefit, reclaim CO2Flue gas afterwards can be through discharging in chimney.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of inexpensive nitrogen-free burning oxygen generation system, it is characterised in that the inexpensive nitrogen-free burning oxygen generation system includes：
Fuel element (10), is provided with and helps fuel gas inlet (101), fuel inlet (102) and exhanst gas outlet (103)；
Oxygen preparation unit (20), for the oxygen separation in air to be come out；
Heat energy kinetic energy conversion unit (30), the heat energy kinetic energy conversion unit (30) is connected with the exhanst gas outlet (103), uses
Heat absorption in the flue gas for discharging the exhanst gas outlet (103), which is utilized, is converted into kinetic energy, and the heat energy kinetic energy is converted
Unit (30) is connected with the oxygen preparation unit (20), the kinetic energy is supplied into the oxygen preparation unit (20).
2. inexpensive nitrogen-free burning oxygen generation system according to claim 1, it is characterised in that the heat energy kinetic energy conversion is single
First (30) include：
Waste-heat recovery device (31), is provided with smoke inlet (311) and steam (vapor) outlet (312), the smoke inlet (311) and institute
State exhanst gas outlet (103) to be connected, the waste-heat recovery device (31) is used to absorb the heat in flue gas；And
Steam turbine (32), is provided with steam inlet (321), and the steam inlet (321) passes through with the steam (vapor) outlet (312)
Steam conveying pipeline is connected.
3. inexpensive nitrogen-free burning oxygen generation system according to claim 2, it is characterised in that the steam turbine (32) is also
Cycle fluid outlet (322) is provided with, and cycle fluid outlet (322) passes through circulation with the waste-heat recovery device (31)
Working medium transfer pipeline is connected；
The heat energy kinetic energy conversion unit (30) also includes the first cooling device (33), and first cooling device (33) is arranged on
On the cycle fluid transfer pipeline.
4. inexpensive nitrogen-free burning oxygen generation system according to claim 3, it is characterised in that the heat energy kinetic energy conversion is single
First (30) also include cycle fluid pump (34), the cycle fluid pump (34) be arranged on the waste-heat recovery device (31) with it is described
On the cycle fluid transfer pipeline between first cooling device (33).
5. inexpensive nitrogen-free burning oxygen generation system according to any one of claim 1 to 4, it is characterised in that the oxygen
Gas preparation unit (20) includes：
First gas compression set (21), is provided with the first air intake (211) and compressed air outlet (212)；
Second cooling device (22), second cooling device (22) passes through compressed air with the compressed air outlet (212)
Transfer pipeline is connected；
Cold feeding mechanism (23), for supplying cold for second cooling device (22)；And
Rectifier unit (24), the rectifier unit (24) is connected with second cooling device (22) through liquid air transfer pipeline
It is logical, for ambient oxygen partial to be separated out；
Wherein, the first gas compression set (21) and the cold feeding mechanism (23) convert single by the heat energy kinetic energy
The kinetic energy driving of first (30) output.
6. inexpensive nitrogen-free burning oxygen generation system according to claim 5, it is characterised in that the oxygen preparation unit
(20) the first air cleaning unit (25) is also included, to remove water, carbon dioxide and dust in the air, and described the
One air cleaning unit (25) is arranged on the compressed air conveying pipeline.
7. inexpensive nitrogen-free burning oxygen generation system according to claim 5, it is characterised in that the rectifier unit (24) sets
Oxygen outlet (241) is equipped with, the oxygen outlet (241) helps fuel gas inlet (101) to be connected by oxygen delivery pipeline with described
It is logical.
8. inexpensive nitrogen-free burning oxygen generation system according to claim 2, it is characterised in that the waste-heat recovery device
(31) off-gas recovery mouthful (313) is additionally provided with, and the off-gas recovery mouthful (313) helps fuel gas inlet (101) by cigarette with described
Gas recovery pipe is connected.
9. inexpensive nitrogen-free burning oxygen generation system according to claim 8, it is characterised in that the inexpensive nitrogen-free burning
Oxygen generation system also includes：
Dehydration device (40), the dehydration device (40) is arranged on the off-gas recovery pipeline；And
Desulfation dust-extraction device (50), the desulfation dust-extraction device (50) is arranged on the dehydration device (40) and the waste heat recovery
On the off-gas recovery pipeline between device (31).
10. inexpensive nitrogen-free burning oxygen generation system according to claim 9, it is characterised in that the inexpensive nitrogen-free combustion
Burning oxygen generation system also includes：
Part flow arrangement (60), the part flow arrangement (60) is arranged on the off-gas recovery pipeline in the dehydration device (40) downstream
On；And
Carbon dioxide recovering apparatus (70), the carbon dioxide recovering apparatus (70) is connected with the part flow arrangement (60), uses
The carbon dioxide distributed in collection from the off-gas recovery pipeline.
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