CN105805771A - Membrane-method enriched oxygen separation combustion-supporting process - Google Patents
Membrane-method enriched oxygen separation combustion-supporting process Download PDFInfo
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- CN105805771A CN105805771A CN201610149186.6A CN201610149186A CN105805771A CN 105805771 A CN105805771 A CN 105805771A CN 201610149186 A CN201610149186 A CN 201610149186A CN 105805771 A CN105805771 A CN 105805771A
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- Prior art keywords
- oxygen
- air
- membrane
- enriched
- combustion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- 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
- C01B13/0251—Physical processing only by making use of membranes
- C01B13/0255—Physical processing only by making use of membranes characterised by the type of membrane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/07005—Injecting pure oxygen or oxygen enriched air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
Abstract
The invention discloses a membrane-method enriched oxygen separation combustion-supporting process. The membrane-method enriched oxygen separation combustion-supporting process includes the steps that a, after air is dedusted by an air purifier by 10 micrometers, the air is conveyed to a ceramic membrane oxygen production generator through a high-pressure fan; b, the air is subjected to graded filtering through the ceramic membrane oxygen production generator, and the ceramic membrane oxygen production generator is in a two-stage parallel mode; c, obtained enriched oxygen is collected by a gas collecting tube, and is dewatered by a steam-water separator, a dehumidifying tank and a pressure-stabilizing tank after being pumped by a water-ring vacuum pump; d, the oxygen-enriched air is boosted to be 3000-4500 Pa by a booster fan; e, the oxygen-enriched air then enters an enriched oxygen preheater to be heated to be at the temperature of 70 DEG C or over; and f, the heated oxygen-enriched air enters a furnace hearth or an air chamber to be used for combustion or combustion supporting. The membrane-method enriched oxygen separation combustion-supporting process is simple, environmentally friendly and low in cost and saves energy.
Description
Technical field
The present invention relates to energy source use technical field, particularly relate to a kind of film oxygen enriching separation combustion-supporting technology.
Background technology
Generally oxygen containing 20.95% (v/v) and the nitrogen of 78.1% (v/v) and a small amount of indifferent gas in air
Body etc., real oxygen the duty gas total amount about 1/5 participating in burning, and the nitrogen of duty gas total amount about 4/5 and
Not only other noble gases are the most combustion-supporting, substantial amounts of heat energy will be taken away, typically containing along with the carrying out of burning on the contrary
The oxygen amount air more than 20.95% is called oxygen-enriched air.
China to burn 1,500,000,000 tons of coals every year, 200,000,000 tons of oil, the most substantial amounts of natural gas, and annual the most all
Increasing, huge energy consumption is the heavy burden developed production, and discharges again substantial amounts of noxious fume simultaneously and gives up
Gas, serious pollution environment, harm the mankind healthy, improve technical process, reduce unit consumption,
Saving energy and environment protection is the key subjects being related to human survival, oxygen-enriched combusting as the most convenient and
Take clean energy resource not to the utmost, be the most increasingly widely applied.
Existing oxygen-enriched separation manufacturing process has separation by deep refrigeration and molecular sieve adsorption.
Separation by deep refrigeration is to be compressed and liquefied by air, according to oxygen, the difference of nitrogen boiling point after removing impurity and cooling down
Realize oxygen by rectifying device, nitrogen separates, and the gas purity that this method separates is high, but the life of compression cooling
Production. art energy consumption is the highest, and production cost is the highest, is only suitable for extensive making oxygen by air separation.
Molecular screen membrane has ultra-fine micropore, and this some holes is small enough to repel some molecule, and allows other molecule
Pass through, but this kind of film be difficult to, frangible, manufacturing expense is high, and repeat usage is relatively low, and oxygen nitrogen separates also
Not being very thorough, the separation gas purity obtained is the highest.
Summary of the invention
The present invention is directed to above technical problem present in prior art, propose a kind of film oxygen enriching and separate combustion-supporting
Technique, technique is simple, energy-conserving and environment-protective and low cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of film oxygen enriching separates combustion-supporting work
Skill, it includes step:
A. air is delivered to ceramic membrane system by high-pressure ventilation fan after the dust that air purifier removes 10 μm
Oxygen Generator；
B. air carries out classified filtering by ceramic membrane oxygen-making generator, and ceramic membrane oxygen-making generator uses two-stage
Parallel connection, the first order uses three groups of monomer membrane parallel connections to constitute, and often group monomer membrane is that specification is respectively 8nm
In series with the monomer part of 2nm, the second level is identical with first order structure, and the first order is in parallel with the second level；
C. gained oxygen-enriched through discharge collect extracted by water-ring vacuum pump after through steam-water separator, dehumidification tank
And vacuum tank, the moisture in removing gas；
D. by booster fan, oxygen-enriched air is pressurized to 3000-4500Pa；
E. enter back into rich-oxygen preheater and be heated to more than 70 DEG C；
F. the oxygen-enriched air after heating enters burner hearth or air compartment, is used as burning or combustion-supporting.
As a kind of improvement to technical scheme of the present invention, in described step b, flow is 50000
m3/ h, operation pressure is 0.1MPa, forms the oxygen-enriched air that oxysome fraction is 30%-35%.
As a kind of improvement to technical scheme of the present invention, in described step b, in described monomer membrane
Separation film thickness less than 1.5 μm, the film thickness difference at membrane tube two ends is less than 0.5 μm.
The film oxygen enriching separation combustion-supporting technology that the present invention provides, technique is simple, energy-conserving and environment-protective and low cost.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with being embodied as
Example, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The film oxygen enriching separation combustion-supporting technology of the specific embodiment of the invention, it includes step:
A. air is delivered to ceramic membrane system by high-pressure ventilation fan after the dust that air purifier removes 10 μm
Oxygen Generator；
B. air carries out classified filtering by ceramic membrane oxygen-making generator, and ceramic membrane oxygen-making generator uses two-stage
Parallel connection, the first order uses three groups of monomer membrane parallel connections to constitute, and often group monomer membrane is that specification is respectively 8nm
In series with the monomer part of 2nm, the second level is identical with first order structure, and the first order is in parallel with the second level；
C. gained oxygen-enriched through discharge collect extracted by water-ring vacuum pump after through steam-water separator, dehumidification tank
And vacuum tank, the moisture in removing gas；
D. by booster fan, oxygen-enriched air is pressurized to 3000-4500Pa；
E. enter back into rich-oxygen preheater and be heated to more than 70 DEG C；
F. the oxygen-enriched air after heating enters burner hearth or air compartment, is used as burning or combustion-supporting.
In the specific embodiment of the invention, in described step b, flow is 50000m3/ h, operation pressure is
0.1MPa, forms the oxygen-enriched air that oxysome fraction is 30%-35%.In step b, dividing in monomer membrane
It is less than 0.5 μm less than 1.5 μm, the film thickness difference at membrane tube two ends from film thickness.
The hot-air that adds after the present invention purifies filters through membrane module, owing to the gas such as oxygen and nitrogen exists
Under the pressure of 0.1MPa, through the speed in high selective membrane aperture different 5 times of nitrogen etc. (oxygen be about),
When the gases such as nitrogen stop in the delay side of film, the fast oxygen of infiltration rate is through film, in the per-meate side of film
It is enriched with, collects through discharge thus prepare oxygen rich gas.And the gases such as nitrogen take the lead in passing through due to oxygen,
Lose and enter air through pressure major part.Embrane method air oxygen nitrogen of the present invention separates, and rich Combustion Technics is profit
Different through infiltration rate during film by component each in air, under the driving of pressure differential, infiltration rate is relative
Slower gas, enters air as the gas such as nitrogen, carbon monoxide is trapped in the delay side of film, and permeates
The relatively fast oxygen of speed is through film, and the per-meate side at film is enriched with, and collects through discharge thus prepares richness and support
Gas, has the advantage such as obvious energy conservation, device is simple, toggle speed is fast, easy to maintenance, life-span length.
The process equipment of the present invention mainly has: air purifier, high-pressure ventilation fan, embrane method oxygen-making device are (oxygen-enriched
Generator), regulation valve, water ring vacuum pump, steam-water separator voltage-stabilizing system, dehumidification tank, vacuum tank, increasing
Add blower fan, oxygen heater, microcomputerized control cabinet etc..Air removes 10 μm through air purifier
Delivered to oxygen-enriched generator (ceramic membrane oxygen-making generator) by high-pressure ventilation fan after dust, ceramic film component be by
Membrane aperture specification is two-stage parallel connection each three series connection totally 6 groups of monomer membrane compositions, the flow of 2nm and 8nm
Up to 50000m3/h, operation pressure is 0.1MPa, for guaranteeing that membrane module is to separating gas permeation rate
High selectivity, the separation film in monomer membrane is the thinnest and smooth, and thickness is less than 1.5 μm；Membrane tube two ends
Film thickness difference less than 0.5 μm.Can effectively separate oxygen, and flow is the biggest, pottery
The selectivity of film is high, can obtain highly purified oxygen from air, forms oxysome fraction and is
The oxygen-enriched air of 30%-35%, gained is oxygen-enriched to be divided through soda pop after discharge is collected and extracted by water-ring vacuum pump
Moisture in device, dehumidification tank and vacuum tank, removing gas, is pressurized to oxygen-enriched air by booster fan
3000-4500Pa, enters back into rich-oxygen preheater and is heated to more than 70 DEG C, subsequently into burner hearth or air compartment, uses
Do and burn or combustion-supporting use.
Present invention process prepares oxygen-enriched flow and is 50000m to the maximum3/ h, oxygen-rich concentration 30%-35%.Work as oxygen
Concentration reaches about 35%, and scale is less than 60000m3During/h, the investment of embrane method oxygen, maintenance and operating cost
It is only deep cooling and 1/3 to the 1/2 of PSA method (molecular sieve) oxygen processed, and scale is the least, embrane method
Oxygen processed is the most economical.
Table 1 below is the electric power consumption of various oxygen autofrettage:
Table 1
Run calculation of price, the one-time investment of film oxygen enriching complexes by existing market, deduct running cost
With (power consumption), can recoup capital outlay then, within most cases about 6 months, can recoup capital outlay, dress
The service life put is 10 years (wherein film original paper >=2 year).Therefore, use this technology, its economic benefit
Considerable.
Advantages of the present invention and effect be: 1, this process equipment manipulation is simple, and oxygen nitrogen separates thoroughly, continuously
Reliable, open, stop conveniently, in starting few minutes after, stable oxygen, floor space can be produced
Little, equipment manufacturing cost is low, and operating cost is low, and energy-saving effect is obvious, and service life was more than 10 years；2, pottery
Membrane module mechanical strength is high, thermal stability is good, chemical stability is good, and renewable service life is long, equipment
Floor space is little, production run low cost；3, reaching about 35% when oxygen concentration, scale is less than
During 60000m3/h, the investment of embrane method oxygen, maintenance and operating cost are only deep cooling and PSA method (is divided
Son sieve) oxygen processed 1/3 to 1/2, and scale is the least, and embrane method oxygen economic benefit is the best.
It should be appreciated that for those of ordinary skills, can be improved according to the above description
Or conversion, and all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (3)
1. a film oxygen enriching separation combustion-supporting technology, it is characterised in that include step:
A. air is delivered to ceramic membrane oxygen-making generator by high-pressure ventilation fan after the dust that air purifier removes 10 μm；
B. air carries out classified filtering by ceramic membrane oxygen-making generator, ceramic membrane oxygen-making generator uses two-stage parallel connection, the first order uses three groups of monomer membrane parallel connections to constitute, often to be that specification is respectively the monomer part of 8nm and 2nm in series for group monomer membrane, the second level is identical with first order structure, and the first order is in parallel with the second level；
C. the oxygen-enriched moisture after discharge is collected and extracted by water-ring vacuum pump in steam-water separator, dehumidification tank and vacuum tank, removing gas of gained；
D. by booster fan, oxygen-enriched air is pressurized to 3000-4500Pa；
E. enter back into rich-oxygen preheater and be heated to more than 70 DEG C；
F. the oxygen-enriched air after heating enters burner hearth or air compartment, is used as burning or combustion-supporting.
Film oxygen enriching separation combustion-supporting technology the most according to claim 1, it is characterised in that in described step b, flow is 50000 m3/ h, operation pressure is 0.1MPa, forms the oxygen-enriched air that oxysome fraction is 30%-35%.
Film oxygen enriching separation combustion-supporting technology the most according to claim 1, it is characterised in that in described step b, in described monomer membraneSeparate filmThickness is less than 1.5 μm, and the film thickness difference at membrane tube two ends is less than 0.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149186.6A CN105805771A (en) | 2016-03-16 | 2016-03-16 | Membrane-method enriched oxygen separation combustion-supporting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149186.6A CN105805771A (en) | 2016-03-16 | 2016-03-16 | Membrane-method enriched oxygen separation combustion-supporting process |
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| Publication Number | Publication Date |
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| CN105805771A true CN105805771A (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610149186.6A Pending CN105805771A (en) | 2016-03-16 | 2016-03-16 | Membrane-method enriched oxygen separation combustion-supporting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589772A (en) * | 2019-08-28 | 2019-12-20 | 南京工业大学 | Oxygen separation device and process |
-
2016
- 2016-03-16 CN CN201610149186.6A patent/CN105805771A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589772A (en) * | 2019-08-28 | 2019-12-20 | 南京工业大学 | Oxygen separation device and process |
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Application publication date: 20160727 |