CN114538751B - Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion - Google Patents
Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion Download PDFInfo
- Publication number
- CN114538751B CN114538751B CN202011339433.1A CN202011339433A CN114538751B CN 114538751 B CN114538751 B CN 114538751B CN 202011339433 A CN202011339433 A CN 202011339433A CN 114538751 B CN114538751 B CN 114538751B
- Authority
- CN
- China
- Prior art keywords
- oxygen
- enriched
- gas
- glass kiln
- combustion
- Prior art date
- 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.)
- Active
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 302
- 239000001301 oxygen Substances 0.000 title claims abstract description 275
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 275
- 239000011521 glass Substances 0.000 title claims abstract description 154
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 121
- 239000007789 gas Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 101
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000002994 raw material Substances 0.000 claims abstract description 37
- 238000011084 recovery Methods 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 70
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 51
- 229910052757 nitrogen Inorganic materials 0.000 claims description 35
- 239000000779 smoke Substances 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 13
- 238000009841 combustion method Methods 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 11
- 239000002912 waste gas Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 14
- 238000002844 melting Methods 0.000 description 13
- 230000008018 melting Effects 0.000 description 13
- 230000005855 radiation Effects 0.000 description 13
- 238000000926 separation method Methods 0.000 description 13
- 238000001179 sorption measurement Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 239000002918 waste heat Substances 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000010459 dolomite Substances 0.000 description 4
- 229910000514 dolomite Inorganic materials 0.000 description 4
- 239000005329 float glass Substances 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000010446 mirabilite Substances 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012510 hollow fiber Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical group O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- -1 at the same time Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
Abstract
The invention relates to a nitrogen-free gas glass kiln oxygen+CO 2 A circulating combustion system and method. CO in the circulating flue gas of the oxygen and glass kiln 2 Is prepared into oxygen-enriched gas serving as combustion improver for oxygen-enriched combustion of a glass kiln, and the nitrogen-free gas glass kiln is oxygen+CO 2 The circulating combustion system has: an oxygen preparation device for preparing oxygen as an oxygen source; circulating flue gas CO 2 Recovery device for recovering CO in tail gas of glass kiln 2 As oxygen-enriched gas distribution; oxygen-enriched mixing device, oxygen prepared by oxygen preparation device and circulating flue gas CO 2 CO recovered by recovery device 2 The mixture is conveyed to an oxygen-enriched mixing device according to a required proportion, and is mixed in the oxygen-enriched mixing device to form oxygen-enriched gas serving as the combustion improver of the glass kiln; the raw material feeding device is used for providing raw materials used by the glass kiln to the glass kiln; and a glass kiln to which the oxygen-enriched gas formed by the oxygen-enriched mixing device is supplied.
Description
Technical Field
The invention relates to a nitrogen-free combustion technology, which mainly comprises the steps of using oxygen and CO in a glass kiln 2 Replace air to support combustion, which belongs to the technical field of glass kiln combustion; CO in the circulating flue gas of the oxygen and glass kiln 2 Preparing oxygen-enriched gas as combustion improver, and a method, a system and a device for kiln oxygen-enriched combustion.
Background
The glass industry is a household with large energy consumption, thousands of glass kilns exist in China at present, the heat efficiency and the heat energy utilization rate are low, the unit consumption of products is high, the cost is high, the pollution is large, and along with the unbalance of global energy supply and the aggravation of regional crisis, the fuel price is continuously increased, and the glass production cost is higher and higher. Therefore, the research on energy conservation and emission reduction of the glass melting furnace is a subject with great strategic significance. The fuel cost is increased from 30% to 40% and the economic benefit of industry is seriously affected. Therefore, the demand for energy saving technology in the glass industry is urgent.
In the prior art, the glass melting furnace always uses air as combustion-supporting medium. Through analysis and research on the existing combustion system, the adoption of air for combustion supporting is considered to be an important factor causing high energy consumption, high pollution and high greenhouse effect. Only 21% of oxygen in the air participates in combustion supporting, 78% of nitrogen is not involved in combustion, a large amount of nitrogen is heated unnecessarily and discharged into the atmosphere at high temperature, so that a large amount of heat is lost, nitrogen also reacts with oxygen at high temperature to generate NOx, NOx gas is discharged into the atmosphere to easily form acid rain to cause environmental pollution, and a large amount of heat is carried into the atmosphere.
Along with the unbalance of global energy supply and the aggravation of the ground crisis, the fuel price is continuously increased, the cost of glass production is higher and higher, and the requirements on energy conservation and emission reduction of production enterprises are higher and higher. For a long time, the glass melting furnace always uses air as combustion-supporting medium, and through the analysis and research of the existing combustion system, the adoption of air for combustion-supporting is considered to be an important factor causing high energy consumption, high pollution and high greenhouse effect. Only 21% of oxygen in the air participates in combustion supporting, 78% of nitrogen is not involved in combustion, a large amount of nitrogen is heated unnecessarily and discharged into the atmosphere at high temperature, so that a large amount of heat is lost, nitrogen also reacts with oxygen at high temperature to generate NOx, NOx gas is discharged into the atmosphere to easily form acid rain to cause environmental pollution, and a large amount of heat is carried into the atmosphere. Therefore, the invention has the urgent effect of saving energy and reducing emission of the glass kiln.
In addition, the average unit energy consumption of the float glass in China is 7800kJ/kg of glass liquid, the international standard value of the energy consumption of the float glass is 5300-7250 kJ/kg of glass liquid, and the float glass is greatly different from the standard value of the energy consumption of the unit products of the newly-built flat glass production enterprises by less than or equal to 6500kJ/kg of glass liquid.
At present, the nitrogen oxide content of the hot flue gas of the domestic float glass is 1500-3000 mg/Nm 3 International 1200mg/Nm 3 And huge pressure is caused for standard discharge of glass enterprises. Improvements to fuel gas have been elusive.
Disclosure of Invention
The invention relates to a nitrogen-free gas glass kiln oxygen+CO 2 The circulating combustion system adopts oxygen and CO in the circulating flue gas of the glass kiln 2 Is prepared into oxygen-enriched gas serving as combustion improver for oxygen-enriched combustion of a glass kiln, and the nitrogen-free gas glass kiln is oxygen+CO 2 The circulating combustion system has: an oxygen preparation device for preparing oxygen as an oxygen source; circulating flue gas CO 2 Recovery device for recovering CO in tail gas of glass kiln 2 As oxygen-enriched gas distribution; oxygen-enriched mixing device, oxygen prepared by oxygen preparation device and circulating flue gas CO 2 CO recovered by recovery device 2 The mixture is conveyed to an oxygen-enriched mixing device according to a required proportion, and is mixed in the oxygen-enriched mixing device to form oxygen-enriched gas serving as the combustion improver of the glass kiln; the raw material feeding device is used for providing raw materials used by the glass kiln to the glass kiln; the oxygen-enriched gas formed by the oxygen-enriched mixing device is provided to the glass kiln, and the oxygen-enriched gas is used as a combustion improver to perform combustion reaction with nitrogen-free fuel in the glass kiln, so that heat required by the operation of the glass kiln is released.
The nitrogen-free gas glass kiln is oxygen+CO 2 And the circulating combustion system can also be characterized in that the oxygen prepared by the oxygen preparation device is sent to the oxygen-enriched mixing device at the pressure of 0.05-0.2 MPa.
The nitrogen-free gas-fired glass kiln oxygen+CO according to one aspect of the invention 2 A circulating combustion system, wherein the oxygen is preparedThe oxygen produced by the apparatus is oxygen with a purity of greater than 90 v%.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 And the circulating combustion system can also be characterized in that the gas distribution is part of circulating flue gas of the purified glass kiln.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 A circulating combustion system, wherein the CO 2 Is obtained by recovering waste heat, dedusting and desulfurizing the glass kiln flue gas.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 In the circulating combustion system, the oxygen-enriched gas formed in the oxygen-enriched mixing device may have an oxygen-enriched concentration of 23 to 35v%.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The circulating combustion system may be such that the raw material feeding device uses CO in circulating flue gas 2 Isolating the raw material feeding device, and avoiding the generation of raw material nitrogen oxides.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The circulating combustion system can also be that the circulating flue gas CO 2 CO collected by the recovery device 2 Before being sent into the oxygen-enriched mixing device, the collected CO is subjected to a pressure adjusting device 2 Pressure adjustment is performed to make the gas pressure suitable for transmission in the apparatus.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The circulating combustion system can also be that the glass kiln utilizes CO in the circulating flue gas 2 The part of the glass kiln, which is easy to leak air, is isolated by means of air seal, air curtain and the like, so that the generation of thermal nitrogen oxides is avoided.
The invention relates to a nitrogen-free gas glass kiln oxygen+CO 2 The circular combustion method adopts oxygen and CO in the circular flue gas of the glass kiln 2 Is prepared into oxygen-enriched gas serving as combustion improver for oxygen-enriched combustion of a glass kiln, and the nitrogen-free gas glass kiln is oxygen+CO 2 The cycle combustion method has the followingThe steps are as follows: an oxygen preparation step of preparing oxygen as an oxygen source; circulating flue gas CO 2 A recovery step, namely recovering CO in the tail gas of the glass kiln 2 As oxygen-enriched gas distribution; oxygen-enriched mixing step, oxygen prepared in the oxygen preparation step and circulating flue gas CO 2 CO recovered in the recovery step 2 Mixing the materials in a required proportion to form oxygen-enriched gas serving as the combustion improver of the glass kiln; a raw material feeding step of providing raw materials used by a glass kiln to the glass kiln; and an oxygen-enriched combustion step, wherein oxygen-enriched gas formed in the oxygen-enriched mixing step is provided to the glass kiln, and the oxygen-enriched gas is used as a combustion improver to perform combustion reaction with nitrogen-free fuel in the glass kiln, so that heat required by the operation of the glass kiln is released.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The cyclic combustion method can also be that oxygen prepared in the oxygen preparation step is mixed with oxygen enriched at the pressure of 0.05-0.2 MPa.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 In the cyclic combustion method, the oxygen prepared in the oxygen preparation step can be oxygen with the purity of more than 90 v%.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The circulating combustion method can also be that the gas distribution is part of circulating flue gas of the purified glass kiln.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 A cyclic combustion method, wherein the CO 2 Is obtained by recovering waste heat, dedusting and desulfurizing the flue gas of the glass kiln.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 In the cyclic combustion method, the oxygen-enriched gas formed in the oxygen-enriched mixing step may have an oxygen-enriched concentration of 23 to 35v%.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 In the cyclic combustion method, CO in the cyclic flue gas is utilized in the raw material feeding step 2 The raw material feeding is isolated, and the generation of raw material nitrogen oxides is avoided.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The circulating combustion method can also be that the circulating flue gas CO 2 Recovering the CO collected in the step 2 Before oxygen enrichment mixing with the oxygen prepared in the oxygen preparation step, the collected CO is subjected to a pressure adjustment step 2 Pressure adjustment is performed to make the gas pressure suitable for transmission in the apparatus.
According to one aspect of the invention, the nitrogen-free gas-fired glass kiln comprises oxygen and CO 2 The cyclic combustion method can also be that CO in the cyclic flue gas is utilized 2 The part of the glass kiln, which is easy to leak air, is isolated by means of air seal, air curtain and the like, so that the generation of thermal nitrogen oxides is avoided.
[ Effect of the invention ]
According to the characteristic of gas radiation, only three-atom and multi-atom gases have radiation capability, and diatomic has almost no radiation capability; the higher the proportion of nitrogen without radiation capability is, the smaller the blackness of the furnace gas is, and the radiation force of the furnace gas to glass liquid is influenced; by using CO in the circulating flue gas 2 After the gas replaces nitrogen in combustion air, at the same time, water vapor and CO are caused by oxygen-enriched combustion 2 The furnace gas blackness and the radiation strength to the batch and the glass liquid are greatly improved after the synergistic effect is overlapped, the melting rate is improved by more than 10%, the melting quality is correspondingly improved, and the obvious effects of energy conservation and consumption reduction are achieved.
The optimization of the combustion environment ensures that the temperature distribution in the furnace is more reasonable, and the service lives of the kiln and the boiler are effectively prolonged. The improvement of the combustion condition in the glass industry also shortens the heating time of the kiln, improves the yield, reduces the defective rate and improves the yield; meanwhile, the requirement on the fuel quality is reduced, and the use of inferior fuel is possible. The low-quality fuel has low price and is easy to purchase, and the energy cost of the product is reduced as a whole.
The oxygen-enriched combustion technology can not only increase the blackness of the flame, but also increase the combustion speed, increase the flame temperature, fully burn off unburnt matters carried in the smoke and reduce the blackness of the smoke. The combustible harmful gas formed by combustion decomposition is fully combusted, so that the generation of the harmful gas is reduced. The exhaust gas temperature and the exhaust gas amount are obviously reduced, and the heat pollution and the dust emission are reduced. The invention changes the tail end treatment into source treatment, thereby realizing the radical breakthrough of ultralow emission of nitrogen oxides.
The oxygen-enriched combustion technology has excellent performance in the aspects of yield increase, energy conservation and emission reduction, and can reduce the unit consumption of heat consumption and comprehensive energy consumption, improve the yield, reduce the emission of flue gas and realize the ultralow emission of NOx.
In summary, the invention has the following beneficial effects:
1. the high temperature area of kiln combustion is formed by CO 2 The nitrogen is replaced, and the generation of nitrogen oxides is avoided.
Combustion mechanism of air combustion supporting in conventional technology: cmHn+O 2 +N 2 →CO 2 +H 2 O+NOx。
The invention is rich in oxygen (CO) 2 +O 2 ) Combustion mechanism for combustion supporting: cmHn+O 2 +CO 2 →CO 2 +H 2 O。
2. According to the characteristic of gas radiation, only three-atom and multi-atom gases have radiation capability, and diatomic has almost no radiation capability; the higher the proportion of nitrogen without radiation capability is, the smaller the blackness of the furnace gas is, and the radiation force of the furnace gas to glass liquid is influenced; by CO 2 After the gas replaces nitrogen, at the same time, water vapor and CO are generated by oxygen-enriched combustion 2 The furnace gas blackness and the radiation strength to the batch and the glass liquid are greatly improved after the synergistic effects are overlapped, the melting rate is improved by more than 10%, the melting quality is correspondingly improved, and the obvious effects of energy conservation and consumption reduction are achieved;
3. the optimization of the combustion environment ensures that the temperature distribution in the furnace is more reasonable, and the service lives of the kiln and the boiler are effectively prolonged. The improvement of the combustion condition in the glass industry also shortens the heating time of the kiln, improves the yield, reduces the defective rate and improves the yield; meanwhile, the requirement on the fuel quality is reduced, and the use of inferior fuel is possible. The low-quality fuel is low in price and easy to purchase, and the energy cost of the product is reduced as a whole;
4. the oxygen-enriched combustion technology can not only increase the blackness of the flame, but also increase the combustion speed, increase the flame temperature, fully burn off unburnt matters carried in the smoke and reduce the blackness of the smoke. The combustible harmful gas formed by combustion decomposition is fully combusted, so that the generation of the harmful gas is reduced. The exhaust gas temperature and the exhaust gas amount are obviously reduced, and the heat pollution and the dust emission are reduced;
5. the oxygen-enriched combustion technology has excellent performance in the aspects of yield increase, energy conservation and emission reduction, and can reduce the unit consumption of heat consumption and the comprehensive energy consumption, improve the yield, reduce the emission of flue gas and realize the ultralow emission of NOx;
6. the implementation of the oxygen-enriched combustion technology does not need to change the structure of the kiln body, and only the raw material feeding system, the combustion-supporting system and the circulating smoke system are partially optimized and modified.
Drawings
FIG. 1 is a schematic illustration of nitrogen-free gas-fired glass kiln oxygen+CO 2 Structure of a circulating combustion system.
FIG. 2 is a schematic illustration of nitrogen-free gas-fired glass kiln oxygen+CO 2 A flow chart of the cyclic combustion.
Description of the reference numerals:
1 oxygen preparation device, 2 circulating flue gas CO 2 The system comprises a recovery device, a 3 variable-frequency blower, a 4 oxygen-enriched mixer, a 5 oxygen-enriched conveying pipeline, a 6 raw material feeding optimization system, a 7 glass kiln, an 8 flue gas purification system and a 9 chimney.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which a person skilled in the art would obtain without making any inventive effort, are within the scope of the invention.
With the deep research of energy-saving and consumption-reducing technology of glass melting furnaces, the research of developing energy-saving glass formulas, optimizing the structure of the glass melting furnaces, improving the control technology of the glass melting furnaces, enhancing the heat preservation and the waste heat utilization of the glass melting furnaces and other energy-saving means of the glass melting furnaces has become quite mature. Under the background, in order to realize further energy saving and consumption reduction of the melting furnace, the oxygen-enriched combustion technology is developed. In particular, in recent years, the oxygen-enriched combustion technology has been rapidly developed, and is one of the most active research subjects in the glass industry.
Oxygen-enriched combustion means that the oxygen concentration in the oxidant for combustion assistance is higher than that in air (the limit is pure oxygen). The oxygen concentration of the air can be concentrated from 20.9% to 26% -30%, and the residual nitrogen is gradually replaced by carbon dioxide in the tail gas of the flue gas, so that the oxygen-enriched air is very moderate and safe for supporting combustion of various kilns. The oxygen-enriched combustion technology not only can increase the blackness of the flame, accelerate the combustion speed and increase the temperature of the flame, but also can improve the radiation heat transfer and convection heat transfer of the flame to the batch or glass liquid because the carbon dioxide replaces nitrogen, thus having high combustion efficiency and greatly reducing NO X Is arranged in the air. Meanwhile, the smoke volume can be reduced, so that the heat loss of smoke is reduced, and the good energy-saving and environment-friendly effects are achieved.
The following is the oxygen+CO of the nitrogen-free gas-fired glass kiln adopting the oxygen-enriched combustion technology 2 The circulating combustion system is described. Referring to FIG. 1, for nitrogen-free gas-fired glass kiln oxygen+CO 2 The structure of the circulating combustion system is explained. FIG. 1 is a schematic illustration of nitrogen-free gas-fired glass kiln oxygen+CO 2 Structure of a circulating combustion system.
In fig. 1, 1 is an oxygen production apparatus, and specifically, oxygen production methods adopted by a mature and commonly used oxygen production apparatus include a cryogenic method, a pressure swing adsorption method, a membrane separation method, and the like.
1. Cryogenic process: the cryogenic process is known as the deep-frozen air separation process, also known as cryogenic rectification. The process is to compress and cool air, liquefy the air, make the air and liquid contact on the rectifying tower plate by utilizing the difference of the boiling points of oxygen and nitrogen components (the boiling point of oxygen is 90K and the boiling point of nitrogen is 77K under the atmospheric pressure), make the high boiling point oxygen component continuously condense into liquid from steam, and the low boiling point nitrogen component continuously transfers into the steam, so that the nitrogen content in the rising steam is continuously improved, and the oxygen content in the downstream liquid is higher and higher, thereby separating the oxygen and the nitrogen.
2. Pressure swing adsorption process: the pressure swing adsorption method is also called molecular sieve air separation method, and the principle is that the molecular sieve selectively adsorbs oxygen and nitrogen components in the air to separate the air and obtain oxygen. When the air passes through the adsorption layer of the molecular sieve adsorption tower after pressure boosting, nitrogen molecules are preferentially adsorbed, and oxygen molecules remain in a gas phase to become finished oxygen. When the adsorption of nitrogen components in the adsorbent reaches saturation, nitrogen molecules adsorbed on the surface of the adsorbent are desorbed by a decompression or vacuumizing method and sent out of the boundary region, so that the adsorption capacity of the adsorbent is recovered.
3. Membrane separation method: the basic principle of membrane separation is to achieve gas separation according to the difference in the transfer rate of each component in the air through the membrane under the pushing of pressure. The method adopts certain high molecular polymers to selectively permeate the activities of different gases, and uses proper high molecular polymers to prepare hollow fibers, thereby realizing the separation of various gases in the air and obtaining the required gases.
Example 1:
CO in circulating flue gas of oxygen and glass kiln prepared by using cryogenic method for large kiln 2 The oxygen-enriched combustion furnace is used as a combustion improver for oxygen-enriched combustion of a glass kiln. The flow is specifically described as follows:
by using the oxygen preparation device 1 shown in fig. 1, air is compressed and cooled, air is liquefied, gas and liquid are contacted on a rectifying tower plate by utilizing the difference of the boiling points of oxygen and nitrogen components, and the quality and heat exchange is carried out, the high-boiling-point oxygen components are continuously condensed into liquid from steam, the low-boiling-point nitrogen components are continuously transferred into the steam, the nitrogen content in the rising steam is continuously improved, and the oxygen content in the downstream liquid is higher and higher, so that oxygen with the purity of more than 99.6v% is obtained by separating the oxygen and the nitrogen.
The recycled flue gas CO in FIG. 1 2 The recovery device 2 recovers the kiln exhaust gas. The flue gas cleaning system 8 in fig. 1 comprises a waste heat recovery system, a dust removal system and a desulfurization system. After the flue gas generated by the glass kiln 7 passes through the flue gas purification system 8, part of circulating flue gas is led out and enters the circulating flue gas CO 2 The recovery device 2 and the rest are emptied through a chimney 9. Circulating flue gas CO 2 The gases collected by the recovery device 2 are mainly CO 2 In order to make the gas suitable for being conveyed in the system, the circulating flue gas CO is fed through a variable frequency blower 3 2 The recovery device 2 collects mainly CO 2 Is subjected to pressure regulation.
Circulating flue gas CO 2 The recovery device 2 collects mainly CO 2 The gas of (2) is sent to the oxygen-enriched mixer 4 in figure 1 through the flow indication controller FIC after being regulated by the variable frequency blower 3; as shown in fig. 1, oxygen produced by cryogenic separation is metered and regulated by a flow indicator controller FIC and then is sent to an oxygen-enriched mixer 4 through an oxygen pipeline; oxygen and CO in recycled flue gas 2 Mixing into 23-35 v% oxygen-enriched in an oxygen-enriched mixer 4, and delivering the mixture to a glass kiln combustion system after the oxygen-enriched mixture is transported by an oxygen-enriched transport pipeline 5, wherein the pressure is 0.05-0.2 MPa.
The oxygen-enriched conveying pipeline 5 is provided with oxygen-enriched flow measurement, temperature measurement, pressure measurement and oxygen purity detector to display the flow, temperature, pressure and oxygen purity of the oxygen-enriched entering the glass kiln combustion system.
In the raw material feeding optimization system 6, raw materials such as silica sand, sodium carbonate, dolomite, limestone and mirabilite of a glass kiln entrain and adsorb air when entering the glass kiln, and CO in the circulating flue gas is utilized 2 The raw material feeding system is isolated and replaced, so that the generation of raw material nitrogen oxides is avoided.
In the glass kiln 7, CO in the circulating flue gas is utilized 2 The parts of the glass kiln, which are easy to leak air, are isolated by air sealing, air curtains and the like, so that the generation of thermal nitrogen oxides is avoided.
In the initial stage of starting the glass kiln, air is adopted to support combustion and the smoke is producedAfter the combustion, the oxygen-enriched gas prepared by mixing the circulating flue gas and oxygen is used as a combustion improver to gradually replace air for combustion supporting, and after 5-10 hours of circulation, the nitrogen in the flue gas is gradually reacted with CO 2 Replacing the waste gas with nitrogen-free flue gas, and enabling the oxygen-enriched combustion-supporting to enter a normal operation state; during the operation of a plurality of series of kilns, the nitrogen-free flue gas can be mutually protected.
Example 2:
CO in the circulating flue gas of oxygen + glass kiln prepared by pressure swing adsorption method for small and medium-sized kiln 2 The oxygen-enriched combustion furnace is used as a combustion improver for oxygen-enriched combustion of a glass kiln. The flow is specifically described as follows:
when the oxygen production apparatus 1 in fig. 1 employs the pressure swing adsorption method, nitrogen molecules are preferentially adsorbed when air passes through the adsorption layer of the molecular sieve adsorption tower after pressure is increased, and oxygen molecules remain in the gas phase to produce finished oxygen. When the adsorption of nitrogen components in the adsorbent reaches saturation, nitrogen molecules adsorbed on the surface of the adsorbent are desorbed by a decompression or vacuumizing method and sent out of the boundary region, so that the adsorption capacity of the adsorbent is recovered. Thereby separating oxygen and nitrogen to obtain the oxygen with the purity of 90-95 v percent.
The recycled flue gas CO in FIG. 1 2 The recovery device 2 recovers the kiln exhaust gas. The flue gas cleaning system 8 in fig. 1 comprises a waste heat recovery system, a dust removal system and a desulfurization system. After the flue gas generated by the glass kiln 7 passes through the flue gas purification system 8, part of circulating flue gas is led out and enters the circulating flue gas CO 2 The recovery device 2 and the rest are emptied through a chimney 9. Circulating flue gas CO 2 The gases collected by the recovery device 2 are mainly CO 2 In order to make the gas suitable for being conveyed in the system, the circulating flue gas CO is fed through a variable frequency blower 3 2 The recovery device 2 collects mainly CO 2 Is subjected to pressure regulation.
Circulating flue gas CO 2 The recovery device 2 collects mainly CO 2 The gas of (2) is sent to the oxygen-enriched mixer 4 in figure 1 through the flow indication controller FIC after being regulated by the variable frequency blower 3; in addition, as shown in fig. 1, oxygen produced by cryogenic separation is metered and regulated by a flow indication controller FIC and then is sent to an oxygen-enriched mixer 4 through an oxygen pipeline; oxygen and circulationCO in flue gas 2 Mixing into 23-35 v% oxygen-enriched in an oxygen-enriched mixer 4, and delivering the mixture to a glass kiln combustion system after the oxygen-enriched mixture is transported by an oxygen-enriched transport pipeline 5, wherein the pressure is 0.05-0.2 MPa.
The oxygen-enriched conveying pipeline 5 is provided with oxygen-enriched flow measurement, temperature measurement, pressure measurement and oxygen purity detector to display the flow, temperature, pressure and oxygen purity of the oxygen-enriched entering the glass kiln combustion system.
In the raw material feeding optimization system 6, raw materials such as silica sand, sodium carbonate, dolomite, limestone and mirabilite of a glass kiln entrain and adsorb air when entering the glass kiln, and CO in the circulating flue gas is utilized 2 The raw material feeding system is isolated and replaced, so that the generation of raw material nitrogen oxides is avoided.
In the glass kiln 7, CO in the circulating flue gas is utilized 2 The parts of the glass kiln, which are easy to leak air, are isolated by air sealing, air curtains and the like, so that the generation of thermal nitrogen oxides is avoided.
In the initial stage of starting the glass kiln, air is adopted for supporting combustion, after the smoke is generated, oxygen enriched prepared by mixing circulating smoke and oxygen is used as a combustion improver to gradually replace air for supporting combustion, and after 5-10 hours of circulation, nitrogen in the smoke is gradually subjected to CO 2 Replacing the waste gas with nitrogen-free flue gas, and enabling the oxygen-enriched combustion-supporting to enter a normal operation state; during the operation of a plurality of series of kilns, the nitrogen-free flue gas can be mutually protected.
Example 3:
for small and medium-sized kilns, membrane separation method is adopted to prepare oxygen and CO in the circulating flue gas of the glass kiln 2 The oxygen-enriched combustion furnace is used as a combustion improver for oxygen-enriched combustion of a glass kiln. The flow is specifically described as follows:
when oxygen is produced by the membrane separation method in the oxygen production apparatus 1 shown in fig. 1, air is pressurized and then made into hollow fibers by the polymer, and oxygen is separated. Thereby obtaining the oxygen with the purity of 93-99.5 v percent.
The recycled flue gas CO in FIG. 1 2 The recovery device 2 recovers the kiln exhaust gas. The flue gas cleaning system 8 in fig. 1 comprises a waste heat recovery system and a dust removal systemAnd a desulfurization system. After the flue gas generated by the glass kiln 7 passes through the flue gas purification system 8, part of circulating flue gas is led out and enters the circulating flue gas CO 2 The recovery device 2 and the rest are emptied through a chimney 9. Circulating flue gas CO 2 The gases collected by the recovery device 2 are mainly CO 2 In order to make the gas suitable for being conveyed in the system, the circulating flue gas CO is fed through a variable frequency blower 3 2 The recovery device 2 collects mainly CO 2 Is subjected to pressure regulation.
Circulating flue gas CO 2 The recovery device 2 collects mainly CO 2 The gas of (2) is sent to the oxygen-enriched mixer 4 in figure 1 through the flow indication controller FIC after being regulated by the variable frequency blower 3; in addition, as shown in fig. 1, oxygen produced by cryogenic separation is metered and regulated by a flow indication controller FIC and then is sent to an oxygen-enriched mixer 4 through an oxygen pipeline; oxygen and CO in recycled flue gas 2 Mixing into 23-35 v% oxygen-enriched in an oxygen-enriched mixer 4, and delivering the mixture to a glass kiln combustion system after the oxygen-enriched mixture is transported by an oxygen-enriched transport pipeline 5, wherein the pressure is 0.05-0.2 MPa.
The oxygen-enriched conveying pipeline 5 is provided with oxygen-enriched flow measurement, temperature measurement, pressure measurement and oxygen purity detector to display the flow, temperature, pressure and oxygen purity of the oxygen-enriched entering the glass kiln combustion system.
In the raw material feeding optimization system 6, raw materials such as silica sand, sodium carbonate, dolomite, limestone and mirabilite of a glass kiln entrain and adsorb air when entering the glass kiln, and CO in the circulating flue gas is utilized 2 The raw material feeding system is isolated and replaced, so that the generation of raw material nitrogen oxides is avoided.
In the glass kiln 7, CO in the circulating flue gas is utilized 2 The parts of the glass kiln, which are easy to leak air, are isolated by air sealing, air curtains and the like, so that the generation of thermal nitrogen oxides is avoided.
In the initial stage of starting the glass kiln, air is adopted for supporting combustion, after the smoke is generated, oxygen enriched prepared by mixing circulating smoke and oxygen is used as a combustion improver to gradually replace air for supporting combustion, and after 5-10 hours of circulation, nitrogen in the smoke is gradually subjected to CO 2 Replacement ofReplacing the flue gas with nitrogen-free flue gas, and enabling the oxygen-enriched combustion-supporting to enter a normal running state; during the operation of a plurality of series of kilns, the nitrogen-free flue gas can be mutually protected.
In addition, the invention relates to the nitrogen-free gas glass kiln oxygen+CO 2 The circular combustion method adopts oxygen and CO in the circular flue gas of the glass kiln 2 Oxygen enrichment is prepared as a combustion improver for oxygen enrichment combustion of a glass kiln, as shown in fig. 2, and the method comprises the following steps:
and an oxygen preparation step of preparing oxygen as an oxygen source.
Circulating flue gas CO 2 A recovery step, namely recovering CO in the tail gas of the glass kiln 2 As oxygen-enriched gas distribution. Using recycled flue gas CO as in figure 1 2 The recovery device 2 recovers the kiln exhaust gas. The flue gas purification system 8 comprises a waste heat recovery system, a dust removal system and a desulfurization system. After the flue gas generated by the glass kiln 7 passes through the flue gas purification system 8, part of circulating flue gas is led out and enters the circulating flue gas CO 2 The recovery device 2 and the rest are emptied through a chimney 9. Circulating flue gas CO 2 The gases collected by the recovery device 2 are mainly CO 2 In order to make the gas suitable for being conveyed in the system, the circulating flue gas CO is fed through a variable frequency blower 3 2 The recovery device 2 collects mainly CO 2 Is subjected to pressure regulation.
Oxygen-enriched mixing step, oxygen prepared in the oxygen preparation step and circulating flue gas CO 2 CO recovered in the recovery step 2 Is mixed according to the required proportion to form the oxygen-enriched gas used as the combustion improver of the glass kiln. Circulating flue gas CO 2 The recovery device 2 collects mainly CO 2 The gas of (2) is sent to the oxygen-enriched mixer 4 in figure 1 through the flow indication controller FIC after being regulated by the variable frequency blower 3; in addition, as shown in fig. 1, oxygen produced by cryogenic separation is metered and regulated by a flow indication controller FIC and then is sent to an oxygen-enriched mixer 4 through an oxygen pipeline; oxygen and CO in recycled flue gas 2 Mixing into 23-35 v% oxygen-enriched in an oxygen-enriched mixer 4, and delivering the mixture to a glass kiln combustion system after the oxygen-enriched mixture is transported by an oxygen-enriched transport pipeline 5, wherein the pressure is 0.05-0.2 MPa.
The oxygen-enriched conveying pipeline 5 is provided with oxygen-enriched flow measurement, temperature measurement, pressure measurement and oxygen purity detector to display the flow, temperature, pressure and oxygen purity of the oxygen-enriched entering the glass kiln combustion system.
And a raw material feeding step of providing raw materials used by the glass kiln to the glass kiln. In the raw material feeding optimization system 6, raw materials such as silica sand, sodium carbonate, dolomite, limestone and mirabilite of a glass kiln entrain and adsorb air when entering the glass kiln, and CO in the circulating flue gas is utilized 2 The raw material feeding system is isolated and replaced, so that the generation of raw material nitrogen oxides is avoided.
In the glass kiln 7, CO in the circulating flue gas is utilized 2 The parts of the glass kiln, which are easy to leak air, are isolated by air sealing, air curtains and the like, so that the generation of thermal nitrogen oxides is avoided.
And an oxygen-enriched combustion step, wherein oxygen-enriched gas formed in the oxygen-enriched mixing step is provided to the glass kiln, and the oxygen-enriched gas is used as a combustion improver to perform combustion reaction with nitrogen-free fuel in the glass kiln, so that heat required by the operation of the glass kiln is released. In the initial stage of starting the glass kiln, air is adopted for supporting combustion, after the smoke is generated, oxygen enriched prepared by mixing circulating smoke and oxygen is used as a combustion improver to gradually replace air for supporting combustion, and after 5-10 hours of circulation, nitrogen in the smoke is gradually subjected to CO 2 Replacing the waste gas with nitrogen-free flue gas, and enabling the oxygen-enriched combustion-supporting to enter a normal operation state; during the operation of a plurality of series of kilns, the nitrogen-free flue gas can be mutually protected.
The present invention has been described above with reference to the above embodiments, but the present invention is not limited to the above embodiments, and the configuration of each embodiment is appropriately combined or replaced and included in the present invention. Further, modifications such as a case where the order of combination or processing of the embodiments is appropriately adapted or various design changes can be added to the embodiments based on the knowledge in the art, and embodiments to which such modifications are added can be included in the scope of the present invention.
Claims (1)
1. Nitrogen-free gas glass kiln oxygen+CO 2 A method of cyclic combustion, characterized in that,
CO in the circulating flue gas of the oxygen and glass kiln 2 Is prepared into oxygen-enriched gas as combustion improver for oxygen-enriched combustion of glass kiln,
the nitrogen-free gas glass kiln oxygen+CO 2 The cyclic combustion method has the following steps:
an oxygen preparation step of preparing oxygen as an oxygen source; the purity of the oxygen prepared in the oxygen preparation step is more than 90v percent;
circulating flue gas CO 2 A recovery step, namely recovering CO in the tail gas of the glass kiln 2 As oxygen-enriched gas distribution; the CO 2 The gas distribution is part of circulating flue gas of the purified glass kiln;
oxygen-enriched mixing step, oxygen prepared in the oxygen preparation step and circulating flue gas CO 2 CO recovered in the recovery step 2 Mixing the materials in a required proportion to form oxygen-enriched gas serving as the combustion improver of the glass kiln; wherein, oxygen prepared in the oxygen preparation step is mixed with oxygen enriched at the pressure of 0.05-0.2 MPa; the circulating flue gas CO 2 Recovering the CO collected in the step 2 Before oxygen enrichment mixing with the oxygen prepared in the oxygen preparation step, the collected CO is subjected to a pressure adjustment step 2 Performing pressure adjustment to make the gas pressure suitable for transmission in the apparatus; the oxygen-enriched concentration of the oxygen-enriched gas formed in the oxygen-enriched mixing step is 23-35% by volume;
a raw material feeding step of providing raw materials used by a glass kiln to the glass kiln; in the raw material feeding step, CO in the circulating flue gas is utilized 2 Isolating raw material feed, and avoiding the generation of raw material nitrogen oxides;
an oxygen-enriched combustion step, wherein oxygen-enriched gas formed in the oxygen-enriched mixing step is provided to the glass kiln, and the oxygen-enriched gas is used as a combustion improver to perform combustion reaction with nitrogen-free fuel in the glass kiln, so as to release heat required by the operation of the glass kilnThe method comprises the steps of carrying out a first treatment on the surface of the By means of CO in the circulating flue gases 2 The part of the glass kiln, which is easy to leak air, is isolated by a mode comprising an air seal and an air curtain, so that the generation of thermal nitrogen oxides is avoided;
in the initial stage of starting a glass kiln, air is adopted for supporting combustion, after the smoke is generated, oxygen enriched prepared by mixing circulating smoke and oxygen is used as a combustion improver to gradually replace air for supporting combustion, and after 5-10 hours of circulation, nitrogen in the smoke is gradually subjected to CO 2 Replacing the waste gas with nitrogen-free flue gas, and enabling the oxygen-enriched combustion-supporting to enter a normal operation state; during the operation of a plurality of series of kilns, the nitrogen-free flue gas can be mutually protected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011339433.1A CN114538751B (en) | 2020-11-25 | 2020-11-25 | Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011339433.1A CN114538751B (en) | 2020-11-25 | 2020-11-25 | Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114538751A CN114538751A (en) | 2022-05-27 |
| CN114538751B true CN114538751B (en) | 2023-12-19 |
Family
ID=81659609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011339433.1A Active CN114538751B (en) | 2020-11-25 | 2020-11-25 | Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114538751B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057133A (en) * | 1990-07-02 | 1991-10-15 | Air Products And Chemicals, Inc. | Thermally efficient melting and fuel reforming for glass making |
| CN101108766A (en) * | 2006-07-18 | 2008-01-23 | 秦皇岛玻璃工业研究设计院 | Oxygen-enriched combustion energy efficient technology for float glass melting furnaces |
| JP2012063041A (en) * | 2010-09-14 | 2012-03-29 | Hitachi Ltd | Oxy-combustion boiler |
| CN104418484A (en) * | 2013-09-06 | 2015-03-18 | 邢韫韬 | Fuel-gas double-preheating high-temperature oxygen-enriched hydrocarbon heat circulation nitrogen-free unidirectional radiation combustion system |
| CN104529133A (en) * | 2014-12-20 | 2015-04-22 | 徐林波 | Novel method of founding molten glass by oxygen-enriched immersion and combustion |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140065559A1 (en) * | 2012-09-06 | 2014-03-06 | Alstom Technology Ltd. | Pressurized oxy-combustion power boiler and power plant and method of operating the same |
-
2020
- 2020-11-25 CN CN202011339433.1A patent/CN114538751B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5057133A (en) * | 1990-07-02 | 1991-10-15 | Air Products And Chemicals, Inc. | Thermally efficient melting and fuel reforming for glass making |
| CN101108766A (en) * | 2006-07-18 | 2008-01-23 | 秦皇岛玻璃工业研究设计院 | Oxygen-enriched combustion energy efficient technology for float glass melting furnaces |
| JP2012063041A (en) * | 2010-09-14 | 2012-03-29 | Hitachi Ltd | Oxy-combustion boiler |
| CN104418484A (en) * | 2013-09-06 | 2015-03-18 | 邢韫韬 | Fuel-gas double-preheating high-temperature oxygen-enriched hydrocarbon heat circulation nitrogen-free unidirectional radiation combustion system |
| CN104529133A (en) * | 2014-12-20 | 2015-04-22 | 徐林波 | Novel method of founding molten glass by oxygen-enriched immersion and combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114538751A (en) | 2022-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2023010885A1 (en) | Glass kiln combustion process having non-catalytic converter | |
| CN113606946B (en) | Carbon dioxide capturing system and emission reduction method for cement kiln tail flue gas | |
| WO2023097943A1 (en) | Nitrogen-free combustion and carbon dioxide capture and utilization process for gas-fired boiler | |
| CN112374458A (en) | Method and device for producing hydrogen from blast furnace gas in iron-making | |
| CN107115775B (en) | Iron ore sintering flue gas sectional enrichment self-heat exchange emission reduction SOxAnd NOxMethod of producing a composite material | |
| CN1939840A (en) | Tail gas treatment and reutilization for calcium carbide stove | |
| CN110315633A (en) | The method and device of cement kiln oxygen-enriched combusting tail gas maintenance cement concrete product | |
| CN108729965B (en) | Power generation system combining partial oxygen-enriched combustion of calcium-based chain and CO 2 Trapping method | |
| CN215403786U (en) | Glass kiln combustion system with non-catalytic converter | |
| CN114151785A (en) | Carbon-based oxygen-enriched combustion and CO (carbon monoxide) of coal-fired boiler2Trapping and utilizing process | |
| CN216303280U (en) | Nitrogen-insulating combustion and CO for gas boiler2Trapping and utilizing system | |
| CN114538751B (en) | Nitrogen-free gas glass kiln oxygen+CO 2 Method, system and device for circulating combustion | |
| CN215103049U (en) | Nitrogen-free gas preparation device | |
| CN113460978A (en) | Method for producing hydrogen, nitrogen and carbon monoxide by semi-coke furnace | |
| CN201147667Y (en) | Oxygen-enriched desorption recovery device for pressure swing adsorption nitrogen making | |
| CN215102818U (en) | Nitrogen-free gas glass kiln oxygen + CO2Circulating combustion system and device | |
| WO2023010883A1 (en) | Total recovery process for carbon dioxide discharged by catalytic cracking regeneration apparatus | |
| CN116196734A (en) | Cement oxy-fuel combustion coupling flue gas carbon dioxide trapping and purifying device | |
| CN208845240U (en) | A kind of coal generating system of the part oxygen-enriched combusting of Combined with Calcium base chemical chain | |
| CN216572397U (en) | Coking and flue gas treatment system | |
| CN102533336B (en) | Coal gas production device with two serially-connected furnaces and technology thereof | |
| CN114459236A (en) | Energy-saving cement kiln flue gas carbon capture method | |
| CN111748672B (en) | Short-process low-cost CO preparation method by converter gas2And high-value application system and process | |
| US11680706B2 (en) | Combustion process of glass kiln with non-catalytic reformers | |
| CN210814554U (en) | System applied to oxygen-enriched combustion of coal-fired power plant boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |