CN111306564A - Sintering flue gas denitration direct-fired heating device and method - Google Patents
Sintering flue gas denitration direct-fired heating device and method Download PDFInfo
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- CN111306564A CN111306564A CN202010189092.8A CN202010189092A CN111306564A CN 111306564 A CN111306564 A CN 111306564A CN 202010189092 A CN202010189092 A CN 202010189092A CN 111306564 A CN111306564 A CN 111306564A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention relates to a sintering flue gas denitration direct-fired heating device, which comprises a gas pipeline (1) and a sintering flue gas pipeline (2), wherein the gas pipeline and the sintering flue gas pipeline are respectively connected with a gas chamber (42) and a combustion-supporting gas chamber (41) of a direct-fired heating device (4), the combustion-supporting gas chamber (41) and the gas chamber (42) are sequentially connected with a mixed combustion chamber (43) and a flue gas heating chamber (45), the inlet of the flue gas heating chamber (45) is connected with a GGH heat exchanger (3), and the outlet of the flue gas heating chamber is connected with a denitration flue (7); an ammonia injection grid (8) is arranged above the denitration flue (7), and a denitration catalyst (9) is arranged in the denitration reactor (6); the denitration reactor (6) is connected with the GGH heat exchanger (3), the GGH heat exchanger (3) is connected with the induced draft fan (10), and the outlet of the induced draft fan (10) is connected with a chimney (11). The invention has the advantages of keeping the denitration efficiency, reducing the CO content in the flue gas and the amount of heated coal gas, saving energy and reducing emission.
Description
Technical Field
The invention relates to the technical field of sintering flue gas denitration, in particular to a sintering flue gas denitration direct-fired heating device and method.
Background
At present, the working interval of the SCR of the traditional selective catalytic reduction denitration process is 280-400 ℃, and if the desulfurized sintering flue gas is to be denitrated by adopting an independent SCR device, the sintering flue gas needs to be reheated. In order to reduce the heating energy consumption of denitration flue gas, a GGH heat exchanger is generally adopted to recover the waste heat of the flue gas after denitration, and the insufficient part adopts a hot blast stove to heat the sintering flue gas to be denitrated by burning coal gas. However, the hot blast stove occupies a large area, high-temperature flue gas in a flue can be mixed into the outlet of the hot blast stove, and the temperature is controlled to be about 600 ℃ so as to prevent the main flue material from being damaged, and the method cannot recycle CO in the sintering flue gas and cannot reduce VOC discharge of the sintering flue gas.
Disclosure of Invention
The invention aims to solve the problems of large occupied area, low CO recovery and utilization rate and high VOC (volatile organic compounds) discharge capacity of the conventional sintering flue gas denitration device, and provides a sintering flue gas denitration direct-fired heating device which can fully recover CO in sintering flue gas, reduce the heating energy consumption of denitration flue gas and reduce the VOC discharge amount of sintering flue gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
a direct-fired heating device for denitration of sintering flue gas comprises a gas pipeline and a sintering flue gas pipeline, wherein the sintering flue gas pipeline is connected with a GGH heat exchanger, the GGH heat exchanger is provided with a raw flue gas inlet, a raw flue gas outlet, a clean flue gas inlet and a clean flue gas outlet, and the raw flue gas inlet is connected with the sintering flue gas pipeline through a pipeline and used for introducing the sintering flue gas into the GGH heat exchanger;
the gas pipeline and the sintering flue gas pipeline are respectively connected with a direct combustion heating device, the direct combustion heating device comprises a group of combustion-supporting gas chambers and a group of gas chambers, the combustion-supporting gas chambers are connected with the sintering flue gas pipeline through pipelines, a heating combustion-supporting fan is arranged on the pipeline connecting the combustion-supporting gas chambers and the sintering flue gas pipeline, the gas chambers are connected with the gas pipeline through pipelines, one end of each of the combustion-supporting gas chambers and one end of each of the gas chambers are jointly connected with a mixed combustion chamber correspondingly matched with the combustion-supporting gas chambers, igniters are arranged in the mixed combustion chambers, the mixed combustion chambers are connected with a flue gas heating chamber, the inlet of each of the flue gas heating chambers is connected with the original flue gas outlet of the GGH heat exchanger through a pipeline, and the outlet of each of the flue gas heating chambers is connected with a denitration flue of a denitration reactor so as to send sintering flue;
an ammonia injection grid is arranged above the denitration flue, and a denitration catalyst is arranged in the denitration reactor, so that ammonia gas and NO in the sintering flue gas are reacted under the action of the catalystxReduction reaction is carried out, so that denitration is realized;
the lower end of the denitration reactor is connected with a clean flue gas inlet of the GGH heat exchanger, a clean flue gas outlet of the GGH heat exchanger is connected with an inlet of an induced draft fan through a pipeline, and an outlet of the induced draft fan is connected with a chimney for discharging purified flue gas after denitration.
Furthermore, fire-resistant walls are arranged on the mixed combustion chamber and the flue gas heating chamber, so that the equipment is prevented from being damaged during high-temperature combustion.
Furthermore, the mixed combustion chamber of the direct-fired heating device is made of corundum refractory material.
Furthermore, the igniter of the direct-fired heating device is a telescopic electronic fire gun.
Furthermore, the combustion-supporting gas chamber and the gas chamber of the direct-fired heating device are both made of 2520 high-temperature-resistant stainless steel materials.
Furthermore, the combustion-supporting gas chamber, the gas chamber and the mixed combustion chamber are respectively provided with two or four, and the two or four combustion-supporting gas chambers, the gas chamber and the mixed combustion chamber are uniformly distributed and connected on the smoke heating chamber.
In order to further achieve the purpose of the invention, the invention also provides a sintering flue gas denitration direct-fired heating method, which comprises the following specific steps:
(1) sintering flue gas to be denitrated is sent into a GGH heat exchanger through a sintering flue gas pipeline, absorbs heat, is heated to 250 ℃, and then enters a flue gas heating chamber of a direct-fired heating device;
(2) meanwhile, the coal gas is introduced into a coal gas chamber of the direct-fired heating device through a coal gas pipeline, a heating combustion-supporting fan introduces a part of sintering flue gas into a combustion-supporting gas chamber of the direct-fired heating device, then the coal gas and the sintering flue gas are mixed and combusted in a mixed combustion chamber, and high-temperature gas is generated and then enters a flue gas heating chamber;
(3) heating the sintering flue gas to be denitrated in the flue gas heating chamber in the step (1) by using high-temperature gas, and burning CO in the sintering flue gas;
(4) the temperature of the heated sintering flue gas is 280 ℃, which is the working temperature of the denitration reactor, the sintering flue gas at the temperature enters a denitration flue, and ammonia gas is uniformly sprayed into an ammonia spraying grid above the denitration flue, so that the sintering flue gas to be denitrated is fully mixed with the ammonia gas;
(5) the mixed sintering flue gas enters a denitration reactor, and under the action of a denitration catalyst, ammonia gas and NO in the sintering flue gasxReduction reaction is carried out to generate nitrogen and water, thereby removing NO in the sintering flue gasxThe denitration of the flue gas is realized;
(6) and the denitrated sintering flue gas downwards passes through the GGH heat exchanger to release heat, and is pressurized by the induced draft fan until the chimney reaches the standard and is discharged.
According to the technical scheme, blast furnace gas is introduced through the gas chamber of the direct-fired heating device, sintering flue gas is introduced through the combustion-supporting gas chamber, and the blast furnace gas and the sintering flue gas are mixed and combusted in the mixing combustion chamber, so that high-temperature flue gas is generated, the sintering flue gas to be denitrated is heated, CO in the sintering flue gas is fully utilized, the coal gas amount required by heating the flue gas is reduced, the denitration efficiency is improved, the CO content in the discharged sintering flue gas is reduced, the VOC discharge amount of the sintering flue gas is reduced, and the direct-fired heating device is green, environment-friendly, energy.
Drawings
FIG. 1 is a schematic structural diagram of a sintering flue gas denitration direct-fired heating device of the present invention;
FIG. 2 is a schematic structural diagram of a direct-fired heating apparatus according to the present invention;
fig. 3 is a schematic diagram of the inlet and outlet distribution of the GGH heat exchanger of the present invention.
Detailed Description
Example 1
In order to make the present invention more clearly understood, the following will further describe a sintering flue gas denitration direct-fired heating apparatus and method according to the present invention with reference to the attached drawings, and the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
Referring to fig. 1 and 3, a sintering flue gas denitration direct-fired heating device comprises a gas pipeline 1 and a sintering flue gas pipeline 2, wherein the sintering flue gas pipeline 2 is connected with a GGH heat exchanger 3, the GGH heat exchanger 3 is provided with a raw flue gas inlet 31, a raw flue gas outlet 32, a clean flue gas inlet 33 and a clean flue gas outlet 34, the raw flue gas inlet 31 is connected with the sintering flue gas pipeline 2 through a pipeline, and the sintering flue gas denitration direct-fired heating device is characterized in that:
referring to fig. 1, 2 and 3, the gas pipeline 1 and the sintering flue gas pipeline 2 are respectively connected with a direct combustion heating device 4, the direct combustion heating device 4 comprises a combustion-supporting gas chamber 41 and a gas chamber 42, the combustion-supporting gas chamber 41 is connected with the sintering flue gas pipeline 2 through a pipeline, a heating combustion-supporting fan 5 is arranged on the pipeline connecting the combustion-supporting gas chamber 41 and the sintering flue gas pipeline 2, the gas chamber 42 is connected with the gas pipeline 1 through a pipeline, one end of the combustion-supporting gas chamber 41 and one end of the gas chamber 42 are jointly connected with a mixing combustion chamber 43 correspondingly connected with the combustion-supporting gas chamber 41 and the gas chamber 42, an igniter 44 is arranged in the mixing combustion chamber 43, the mixing combustion chamber 43 is connected with a flue gas heating chamber 45, the inlet of the flue gas heating chamber 45 is connected with the raw flue gas outlet 32 of the GGH heat exchanger 3 through a pipeline, the outlet of the flue gas heating chamber, the denitration flue is used for conveying the sintering flue gas heated in the direct-fired heating device into the denitration reactor;
the mixed combustion chamber 43 and the flue gas heating chamber 45 are both provided with refractory walls 46 for preventing the equipment from being damaged during high-temperature combustion;
an ammonia injection grid 8 is arranged above the denitration flue 7, and a denitration catalyst 9 is arranged in the denitration reactor 6, so that ammonia gas and NO in the sintering flue gas are reacted under the action of the catalystxReduction reaction is carried out, so that denitration is realized;
the lower end of the denitration reactor 6 is connected with a clean flue gas inlet 33 of the GGH heat exchanger 3, a clean flue gas outlet 34 of the GGH heat exchanger 3 is connected with an inlet of an induced draft fan 10 through a pipeline, and an outlet of the induced draft fan 10 is connected with a chimney 11 for discharging purified flue gas after denitration.
The mixed combustion chamber 43 of the direct-fired heating device 4 is made of corundum refractory material, the igniter 44 is a telescopic electronic electric torch, and the combustion-supporting gas chamber 41 and the gas chamber 42 are both made of 2520 high-temperature-resistant stainless steel material.
The direct-fired heating method for sintering flue gas denitration by using the device comprises the following specific steps of:
(1) the sintering flue gas to be denitrated is sent into the GGH heat exchanger 3 from a raw flue gas inlet 31 of the GGH heat exchanger 3 through a sintering flue gas pipeline 2, absorbs heat, is heated to 250 ℃, is discharged from a raw flue gas outlet 32 of the GGH heat exchanger 3, and enters a flue gas heating chamber 45 of the direct-fired heating device 4 through a pipeline;
(2) meanwhile, the coal gas is introduced into a coal gas chamber 42 of the direct-fired heating device 4 through a coal gas pipeline 1, a part of sintering flue gas is introduced into a combustion-supporting gas chamber 41 of the direct-fired heating device 4 by a heating combustion-supporting fan 5, then an igniter 44 is opened, the coal gas and the sintering flue gas are mixed and combusted in a mixed combustion chamber 43, and high-temperature gas is generated and then enters a flue gas heating chamber 45;
(3) heating the sintering flue gas to be denitrated in the flue gas heating chamber 45 in the step (1) by using high-temperature gas, and burning CO in the sintering flue gas;
(4) the temperature of the heated sintering flue gas is 280 ℃, which is the working temperature of the denitration reactor 6, the sintering flue gas at the temperature enters the denitration flue 7, and ammonia gas is uniformly sprayed into the ammonia spraying grid 8 above the denitration flue 7, so that the sintering flue gas to be denitrated is fully mixed with the ammonia gas;
(5) the mixed sintering flue gas enters a denitration reactor 6, and under the action of a denitration catalyst 9, ammonia gas and NO in the sintering flue gasxReduction reaction is carried out to generate nitrogen and water, thereby removing NO in the sintering flue gasxThe denitration of the flue gas is realized;
(6) the denitrated sintering flue gas downwards enters the GGH heat exchanger from a clean flue gas inlet 33 of the GGH heat exchanger 3, is discharged from a clean flue gas outlet 34 after heat is released, and is finally pressurized by the induced draft fan 10 to the chimney 11 to reach the standard and discharged.
According to the invention, blast furnace gas is introduced through the gas chamber of the direct-fired heating device, sintering flue gas is introduced through the combustion-supporting gas chamber, and the blast furnace gas and the sintering flue gas are mixed and combusted in the mixed combustion chamber, so that high-temperature flue gas is generated, the sintering flue gas to be denitrated is heated, CO in the sintering flue gas is fully utilized, the gas quantity required by the heating flue gas is reduced, the CO content in the discharged sintering flue gas is reduced, the VOC discharge amount of the sintering flue gas is reduced, and the direct-fired heating device is green, environment-.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a sintering flue gas denitration direct combustion formula heating device, includes gas pipeline (1) and sintering flue gas pipeline (2), sintering flue gas pipeline (2) link to each other with a GGH heat exchanger (3), are equipped with former gas inlet (31), former gas outlet (32), net gas inlet (33) and net gas outlet (34) on GGH heat exchanger (3), and former gas inlet (31) link to each other with sintering flue gas pipeline (2), its characterized in that:
the gas pipeline (1) and the sintering flue gas pipeline (2) are respectively connected with a direct-fired heating device (4), the direct-fired heating device (4) comprises a group of combustion-supporting gas chambers (41) and a group of gas chambers (42), the combustion-supporting gas chambers (41) are connected with the sintering flue gas pipeline (2), and a pipeline connecting the combustion-supporting gas chamber (41) and the sintering flue gas pipeline (2) is provided with a heating combustion-supporting fan (5), a gas chamber (42) is connected with the gas pipeline (1), one end of the combustion-supporting gas chamber (41) and one end of the gas chamber (42) are connected with a mixed combustion chamber (43) which is correspondingly matched with the combustion-supporting gas chamber and the gas chamber, an igniter (44) is arranged in the mixed combustion chamber (43), the mixed combustion chamber (43) is connected with the flue gas heating chamber (45), the inlet of the flue gas heating chamber (45) is connected with the raw flue gas outlet (32) of the GGH heat exchanger (3), and the outlet is connected with the denitration flue (7) of the denitration reactor (6);
an ammonia injection grid (8) is arranged above the denitration flue (7), and a denitration catalyst (9) is arranged in the denitration reactor (6);
the lower end of the denitration reactor (6) is connected with a clean flue gas inlet (33) of the GGH heat exchanger (3), a clean flue gas outlet (34) of the GGH heat exchanger (3) is connected with an inlet of an induced draft fan (10), and an outlet of the induced draft fan (10) is connected with a chimney (11).
2. The sintering flue gas denitration direct-fired heating device of claim 1, characterized in that:
and the mixed combustion chamber (43) and the flue gas heating chamber (45) are both provided with refractory walls (46).
3. The direct combustion type heating device for denitration of sintering flue gas as set forth in claim 1 or 2, wherein:
the mixed combustion chamber (43) of the direct-fired heating device (4) is made of corundum refractory material.
4. The direct combustion type heating device for denitration of sintering flue gas as set forth in claim 1 or 2, wherein:
the igniter (44) of the direct-fired heating device (4) is a telescopic electronic flame gun.
5. The direct combustion type heating device for denitration of sintering flue gas as set forth in claim 1 or 2, wherein:
the combustion-supporting gas chamber (41) and the gas chamber (42) of the direct-fired heating device (4) are made of 2520 high-temperature-resistant stainless steel materials.
6. The direct combustion type heating device for denitration of sintering flue gas as set forth in claim 1 or 2, wherein:
the combustion-supporting gas chambers (41), the gas chambers (42) and the mixed combustion chambers (43) can be two or four, and are uniformly distributed and connected to the smoke heating chamber (45).
7. The method for denitration direct-fired heating of sintering flue gas by using the device as claimed in claim 1 or 2 comprises the following specific steps:
the method comprises the following steps: sintering flue gas to be denitrated is sent into a GGH heat exchanger (3) through a sintering flue gas pipeline (2), and enters a flue gas heating chamber (45) of a direct-fired heating device (4) after being heated to 250 ℃;
step two: gas is introduced into a gas chamber (42) through a gas pipeline (1), a combustion-supporting fan (5) is heated to introduce a part of sintering flue gas into a combustion-supporting gas chamber (41), then the gas and the sintering flue gas are mixed (43) and combusted in a mixed combustion chamber, and high-temperature gas is generated and then enters a flue gas heating chamber (45);
step three: heating the sintering flue gas to be denitrated in the flue gas heating chamber (45) in the step one by high-temperature gas, and simultaneously burning CO in the sintering flue gas;
step four: the heated sintering flue gas with the temperature of 280 ℃ enters a denitration flue (7), and ammonia is uniformly sprayed into an ammonia spraying grid (8) to fully mix the sintering flue gas to be denitrated with the ammonia;
step five: the mixed sintering flue gas enters a denitration reactor (6), and under the action of a denitration catalyst (9), ammonia gas and NO in the sintering flue gasxReduction reaction is carried out to generate nitrogen and water, NO in the sintering flue gas is removedxThe denitration of the flue gas is realized;
step six: the denitrated sintering flue gas downwards emits heat through the GGH heat exchanger (3), and is pressurized through the induced draft fan (10) until the flue gas reaches the standard and is discharged through the chimney (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010189092.8A CN111306564A (en) | 2020-03-18 | 2020-03-18 | Sintering flue gas denitration direct-fired heating device and method |
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| CN202010189092.8A CN111306564A (en) | 2020-03-18 | 2020-03-18 | Sintering flue gas denitration direct-fired heating device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304102A (en) * | 2020-09-07 | 2021-02-02 | 柳州钢铁股份有限公司 | Method and device for recycling CO in sintering pellet waste gas |
| CN113623659A (en) * | 2021-06-22 | 2021-11-09 | 江苏中圣高科技产业有限公司 | Submerged combustion type gasifier system for deep denitration |
| CN113945097A (en) * | 2020-07-16 | 2022-01-18 | 河北中科智源新材料技术有限公司 | Method for removing CO and NOx in mixed smoke in double-smoke replacement heat accumulating type heating furnace in synergy manner |
| CN113945098A (en) * | 2020-07-16 | 2022-01-18 | 河北中科智源新材料技术有限公司 | Method for synergistically removing mixed smoke CO and NOx of soot replacement heat accumulating type heating furnace |
| WO2022267205A1 (en) * | 2021-06-22 | 2022-12-29 | 江苏中圣高科技产业有限公司 | Submerged combustion gasification system making full use of waste heat and having ultra-low nox emissions |
| CN116474661A (en) * | 2023-06-21 | 2023-07-25 | 亚捷科技（唐山）股份有限公司 | Internal mixing heat absorption type atmosphere preparation device |
| CN117839428A (en) * | 2024-03-08 | 2024-04-09 | 北京中航泰达环保科技股份有限公司 | Energy-saving flue gas denitration system |
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2020
- 2020-03-18 CN CN202010189092.8A patent/CN111306564A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945097A (en) * | 2020-07-16 | 2022-01-18 | 河北中科智源新材料技术有限公司 | Method for removing CO and NOx in mixed smoke in double-smoke replacement heat accumulating type heating furnace in synergy manner |
| CN113945098A (en) * | 2020-07-16 | 2022-01-18 | 河北中科智源新材料技术有限公司 | Method for synergistically removing mixed smoke CO and NOx of soot replacement heat accumulating type heating furnace |
| CN113945097B (en) * | 2020-07-16 | 2024-05-31 | 河北中科智源新材料技术有限公司 | Method for cooperatively removing mixed smoke CO and NOx of double-smoke replacement heat accumulating type heating furnace |
| CN113945098B (en) * | 2020-07-16 | 2024-05-31 | 河北中科智源新材料技术有限公司 | Method for cooperatively removing CO and NOx mixed in soot replacement heat accumulating type heating furnace |
| CN112304102A (en) * | 2020-09-07 | 2021-02-02 | 柳州钢铁股份有限公司 | Method and device for recycling CO in sintering pellet waste gas |
| CN113623659A (en) * | 2021-06-22 | 2021-11-09 | 江苏中圣高科技产业有限公司 | Submerged combustion type gasifier system for deep denitration |
| WO2022267205A1 (en) * | 2021-06-22 | 2022-12-29 | 江苏中圣高科技产业有限公司 | Submerged combustion gasification system making full use of waste heat and having ultra-low nox emissions |
| CN116474661A (en) * | 2023-06-21 | 2023-07-25 | 亚捷科技（唐山）股份有限公司 | Internal mixing heat absorption type atmosphere preparation device |
| CN116474661B (en) * | 2023-06-21 | 2023-09-01 | 亚捷科技（唐山）股份有限公司 | Internal mixing heat absorption type atmosphere preparation device |
| CN117839428A (en) * | 2024-03-08 | 2024-04-09 | 北京中航泰达环保科技股份有限公司 | Energy-saving flue gas denitration system |
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