CN209934427U - Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace - Google Patents
Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace Download PDFInfo
- Publication number
- CN209934427U CN209934427U CN201920383897.9U CN201920383897U CN209934427U CN 209934427 U CN209934427 U CN 209934427U CN 201920383897 U CN201920383897 U CN 201920383897U CN 209934427 U CN209934427 U CN 209934427U
- Authority
- CN
- China
- Prior art keywords
- nitrogen oxide
- air outlet
- energy
- air inlet
- aluminum foil
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Abstract
The utility model provides an energy-concerving and environment-protective type nitrogen oxide emission reduction device for gas furnace, the utility model relates to energy-conserving emission reduction technical field; the device comprises a heat pipe heat exchanger, an aluminum foil type heat exchange core, a rotational flow dehumidification tower, adsorption equipment and an exhaust funnel; the air inlet of the heat pipe exchanger is connected with the exhaust outlet of the kiln; the air outlet of the heat pipe exchanger is connected with the air inlet of the aluminum foil type heat exchange core, the air outlet of the aluminum foil type heat exchange core is connected with the air inlet of the rotational flow dehumidification tower, the air outlet of the rotational flow dehumidification tower is connected with the air inlet of the adsorption equipment, and the air outlet of the adsorption equipment is connected with the exhaust funnel. The process flow is simple, a catalyst, a reducing agent and water are not needed, no secondary pollutant is generated in the operation process, the waste heat can be effectively utilized, the emission amount of the nitrogen oxide in the flue gas passing through the system reaches the ultra-low emission standard of 50mg/m, the generation of the secondary pollutant is avoided in the nitrogen oxide treatment process, and the win-win effect of energy conservation and environmental protection is realized.
Description
Technical Field
The utility model relates to an energy saving and emission reduction technical field, concretely relates to energy-concerving and environment-protective type nitrogen oxide emission reduction device for gas kiln.
Background
With the gradual increase of environmental protection consciousness, the environmental protection situation is more and more severe, and the national emission requirements on the industrial tail gas of inorganic materials such as refractory materials, ceramics and the like are higher and higher. Taking the environmental protection requirement of the refractory industry as an example, the requirement of the kiln is that the firing process of the existing enterprises in the emission standard (China Association for refractory industry) of the atmospheric pollutants in the refractory industry is as follows: below 1400 deg.C, the converted concentration of nitrogen oxides (18% of reference oxygen content, expressed as NO) in the exhaust2Calculated) is less than or equal to 200mg/m31400 ℃ and 1700 ℃, the converted concentration of nitrogen oxide at the discharge outlet is less than or equal to 300mg/m3Not less than 1700 ℃, and the converted concentration of nitrogen oxide in the discharge outlet is not more than 500mg/m3. The new technology for reducing the emission of the nitrogen oxides in the refractory material gas furnace is more and more urgent.
The technology for reducing the emission of the nitrogen oxides is relatively mature in the fields of cement plants, thermal power plants, industrial boilers and the like, and the control and emission reduction of the nitrogen oxides of refractory material gas furnaces are not a mature suitable scheme. There are many methods for treating nitrogen oxides in industry, but most of them have both advantages and disadvantages. SCR and SNCR technologies mainly adopted in domestic cement industry and thermal power plants; some absorption towers which are connected in series in two stages are adopted to treat nitrogen oxides in flue gas, for example, a patent "a device for removing nitrogen oxides and a using method thereof" (CN 108939858A) is provided, each absorption tower which is connected in series is provided with a spraying device and a demisting device, and an absorption pump, a medicine box and an absorption liquid tank are arranged outside each absorption tower, the principle is that the nitrogen oxides react with a strong oxidant and an acid solution to remove the nitrogen oxides, and the patent inevitably generates the problems of waste water and the like; for example, in the patent "a method for treating nitrogen oxide" (CN 109012173 a), an aqueous solution containing an oxidant and ceria is used as an adsorption solution to convert nitrogen oxide into nitric acid, the particle size of ceria needs to be nanometer, and there is a certain requirement for the introduction rate of flue gas, 1000-12000mg/min is easy to cause gas escape, and the efficiency is not ideal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, a simple structure is provided, reasonable in design, convenient to use's energy-concerving and environment-protective type nitrogen oxide emission reduction device for gas kiln, process flow is simple, do not need the catalyst, reductant and water, there is not the production of secondary pollutant at the in-process of operation, and can carry out effectual utilization to the waste heat, flue gas reaches standard 50mg/m year (benchmark oxygen content 9%) of ultralow emission through the emission of nitrogen oxide behind this system, stop the production of secondary pollutant at the in-process of handling nitrogen oxide, realize energy-conserving and environmental protection win-win effect.
In order to achieve the above object, the utility model provides an energy-concerving and environment-protective type nitrogen oxide reduces discharging device for gas kiln: the device comprises a heat pipe heat exchanger, an aluminum foil type heat exchange core, a rotational flow dehumidification tower, adsorption equipment and an exhaust funnel; the air inlet of the heat pipe exchanger is connected with the exhaust outlet of the kiln; the air outlet of the heat pipe exchanger is connected with the air inlet of the aluminum foil type heat exchange core, the air outlet of the aluminum foil type heat exchange core is connected with the air inlet of the rotational flow dehumidification tower, the air outlet of the rotational flow dehumidification tower is connected with the air inlet of the adsorption equipment, and the air outlet of the adsorption equipment is connected with the exhaust funnel.
Furthermore, a variable frequency fan is connected in series between the air outlet of the adsorption equipment and the air inlet of the exhaust funnel.
Further, the temperature of the flue gas at the air outlet of the heat pipe exchanger is 200-300 ℃.
Further, the flue gas temperature of the air outlet of the aluminum foil type heat exchange core is 40-50 ℃.
Further, the content of nitrogen oxides in the flue gas discharged from the gas outlet of the exhaust stack is 50mg/m through high pressure swing method.
After the structure is adopted, the utility model discloses beneficial effect does: a gas furnace is with energy-concerving and environment-protective type nitrogen oxide emission reduction device, process flow is simple, does not need catalyst, reductant and water, can not have the production of secondary pollutant at the in-process of operation, can carry out effectual utilization to the waste heat moreover, the flue gas reaches standard 50mg/m of ultralow emission in the emission of nitrogen oxide behind this system (benchmark oxygen content 9%), stops secondary pollutant's production at the in-process of handling to nitrogen oxide, realizes energy-conserving and environmental protection win-win effect, the utility model has the advantages of simple structure sets up rationally, the cost of manufacture is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the heat pipe exchanger of the present invention.
Fig. 3 is a schematic structural view of the aluminum foil type heat exchange core of the present invention.
Fig. 4 is a schematic structural diagram of the cyclone dehumidification tower of the present invention.
Description of reference numerals:
the device comprises a heat pipe heat exchanger 1, a primary flue gas inlet 1-1, a primary flue gas outlet 1-2, a medium inlet 1-3, a medium outlet 1-4, an inner sleeve 1-5, an outer sleeve 1-6, an aluminum foil type heat exchange core 2, a secondary flue gas inlet 2-1, a secondary flue gas outlet 2-2, a cold air fan 2-3, a rotational flow dehumidification tower 3, an air inlet 3-1, an air outlet 3-2, a rotational flow plate flange 3-3, a water inlet 3-4, an adsorption device 4, an exhaust funnel 5 and a variable frequency fan 6.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, in the present embodiment, the energy-saving and environment-friendly nitrogen oxide emission reduction device for a gas furnace: the device comprises a heat pipe heat exchanger 1, an aluminum foil type heat exchange core 2, a cyclone dehumidification tower 3, adsorption equipment 4 and an exhaust funnel 5; the air inlet of the heat pipe exchanger 1 is connected with the exhaust outlet of the kiln; the air outlet of the heat pipe exchanger 1 is connected with the air inlet of the aluminum foil type heat exchange core 2, the air outlet of the aluminum foil type heat exchange core 2 is connected with the air inlet of the rotational flow dehumidification tower 3, the air outlet of the rotational flow dehumidification tower 3 is connected with the air inlet of the adsorption equipment 4, the air outlet of the adsorption equipment 4 is connected with the air inlet of the variable frequency fan 6, and the air outlet of the variable frequency fan 6 is connected with the exhaust funnel 5; the structures of the heat pipe heat exchanger 1, the aluminum foil type heat exchange core 2, the cyclone dehumidification tower 3, the adsorption equipment 4 and the exhaust funnel 5 are the same as the structural principles of the heat pipe heat exchanger, the aluminum foil type heat exchange core, the cyclone dehumidification tower, the adsorption equipment and the exhaust funnel in the prior art, and no structural details are given here.
The energy-saving and environment-friendly nitrogen oxide emission reduction method for the gas furnace in the specific embodiment comprises the following steps: the method comprises the following steps: flue gas coming out of a gas tunnel kiln is introduced into a primary flue gas inlet 1-1 of a heat pipe heat exchanger 1 through a pipeline, enters an outer sleeve 1-6 from the primary flue gas inlet 1-1, a heat exchange medium enters an inner sleeve 1-5 from a medium inlet 1-3, after waste heat recovered from the heat exchange medium discharged from a medium outlet 1-4 is used for preheating combustion-supporting air, the waste heat in the flue gas is utilized for the first time, combustion-supporting air is introduced into a kiln burner through a pipeline, the flue gas discharged from a primary flue gas outlet 1-2 is introduced into an aluminum foil type heat exchange core 2 (the temperature of the flue gas at the primary flue gas outlet 1-2 is 200 ℃ and 300 ℃) and enters the aluminum foil type heat exchange core 2 from a secondary flue gas inlet 2-1 to exchange heat with the heat exchange medium entering from a cold air fan 2-3, and the waste heat recovered from the aluminum foil type heat exchange core 2 for bathing in a factory, Heating, product drying, etc.; of flue gases discharged from the secondary flue gas outlet 2-2 of the aluminium foil heat exchange core 2The temperature is reduced to about 40-50 ℃, then the flue gas is introduced into an air inlet 3-1 of a cyclone dehumidification tower 3 through a pipeline, after dehumidification is carried out through a cyclone plate flange 3-3 in the cyclone dehumidification tower 3, the moisture in the flue gas is discharged from a water inlet 3-4, the removed water can be stored in a recovery device and then is selected for use for the second time and can be used as binding agent water or industrial water in a plant area, the flue gas discharged from an air outlet 3-2 of the cyclone dehumidification tower 3 is introduced into an adsorption device 4 through a pipeline, and the nitrogen oxide in the flue gas is adsorbed by adopting a dry physical and chemical composite adsorption method, so that the ultralow emission of 50mg/m is achieved3(the reference oxygen content is 9%), the variable frequency fan 6 is arranged at the front end of the exhaust funnel 5, so that the adjustment is convenient according to the change of the smoke volume, the operation of a gas kiln is not interfered, and the process requirement is met.
After adopting above-mentioned structure, this embodiment beneficial effect does: this embodiment an energy-concerving and environment-protective type nitrogen oxide emission reduction device for gas furnace, process flow is simple, does not need catalyst, reductant and water, can not have secondary pollutant's production at the in-process of operation, can carry out effectual utilization to the waste heat moreover, the flue gas reaches standard 50mg/m of ultralow emission in nitrogen oxide's emission after this system 50mg/m (benchmark oxygen content 9%), stops secondary pollutant's production at the in-process of handling nitrogen oxide, realizes energy-conserving and environmental protection win-win effect, the utility model has the advantages of simple structure sets up rationally, the cost of manufacture is low.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. An energy-concerving and environment-protective type nitrogen oxide emission reduction device for gas furnace, its characterized in that: the device comprises a heat pipe heat exchanger (1), an aluminum foil type heat exchange core (2), a cyclone dehumidification tower (3), adsorption equipment (4) and an exhaust funnel (5); the air inlet of the heat pipe exchanger (1) is connected with the exhaust outlet of the furnace kiln; the air outlet of the heat pipe exchanger (1) is connected with the air inlet of the aluminum foil type heat exchange core (2), the air outlet of the aluminum foil type heat exchange core (2) is connected with the air inlet of the rotational flow dehumidification tower (3), the air outlet of the rotational flow dehumidification tower (3) is connected with the air inlet of the adsorption equipment (4), and the air outlet of the adsorption equipment (4) is connected with the exhaust funnel (5).
2. The energy-saving and environment-friendly nitrogen oxide emission reduction device for the gas-fired kiln as recited in claim 1, characterized in that: a variable frequency fan (6) is connected in series between the air outlet of the adsorption equipment (4) and the air inlet of the exhaust funnel (5).
3. The energy-saving and environment-friendly nitrogen oxide emission reduction device for the gas-fired kiln as recited in claim 1, characterized in that: the temperature of the flue gas at the air outlet of the heat pipe exchanger (1) is 200-300 ℃.
4. The energy-saving and environment-friendly nitrogen oxide emission reduction device for the gas-fired kiln as recited in claim 1, characterized in that: the flue gas temperature of the air outlet of the aluminum foil type heat exchange core (2) is 40-50 ℃.
5. The energy-saving and environment-friendly nitrogen oxide emission reduction device for the gas-fired kiln as recited in claim 1, characterized in that: the content of nitrogen oxide in the flue gas discharged from the gas outlet of the exhaust funnel (5) is 50mg/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383897.9U CN209934427U (en) | 2019-03-25 | 2019-03-25 | Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383897.9U CN209934427U (en) | 2019-03-25 | 2019-03-25 | Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209934427U true CN209934427U (en) | 2020-01-14 |
Family
ID=69125250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920383897.9U Expired - Fee Related CN209934427U (en) | 2019-03-25 | 2019-03-25 | Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209934427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821371A (en) * | 2019-03-25 | 2019-05-31 | 郑州大学 | A kind of gas burning kiln energy saving and environment friendly nitrogen oxides emission reduction device and its method |
-
2019
- 2019-03-25 CN CN201920383897.9U patent/CN209934427U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821371A (en) * | 2019-03-25 | 2019-05-31 | 郑州大学 | A kind of gas burning kiln energy saving and environment friendly nitrogen oxides emission reduction device and its method |
| CN109821371B (en) * | 2019-03-25 | 2024-03-22 | 郑州大学 | Nitrogen oxide emission reduction device for gas kiln and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204555717U (en) | Warm flue gas SCR denitration device in a kind of cement kiln end | |
| WO2016045172A1 (en) | Denitration and waste heat recovery integrated furnace | |
| CN104162352B (en) | A kind of glass furnace fume dedusting, denitration, desulfurization integrated handling process | |
| CN202478810U (en) | Device for purifying and recovering waste gas of industrial furnace | |
| CN109099718B (en) | Rotary kiln waste heat recovery system | |
| CN204952595U (en) | Wet coating exhaust recycling treatment system | |
| CN105688667A (en) | Method for carrying out denitration on sintering flue gas by utilizing sensible heat of blast furnace slag | |
| CN105509492A (en) | System and method for recovering waste heat and CO2 of alumina rotary kiln flue gas | |
| CN108114594A (en) | A kind of disposable apparatus for continuous treatment of environment-friendly high-efficiency exhaust gas | |
| CN107120660A (en) | A kind of domestic garbage pyrolysis incinerator flue gas purification system | |
| CN203910361U (en) | Enamelled wire roaster waste heat recovery device | |
| CN209934427U (en) | Energy-saving and environment-friendly nitrogen oxide emission reduction device for gas furnace | |
| CN209809934U (en) | Kiln tail flue gas purification system of novel dry-method cement kiln | |
| CN108686475B (en) | Dedusting and denitration equipment and transformation method thereof | |
| CN109821371B (en) | Nitrogen oxide emission reduction device for gas kiln and method thereof | |
| CN107899389A (en) | The energy saving hybrid processing system of Industrial Stoves VOC exhaust gas | |
| CN209917582U (en) | Rotary drum adsorption concentration device | |
| CN105889963B (en) | A kind of heat-exchanger rig for wet desulfurization system | |
| CN209279177U (en) | A kind of heat accumulating type Catalytic oxidation furnace | |
| CN209952555U (en) | Smoke treatment system for red mud wet rotary kiln | |
| CN203657503U (en) | Exhaust gas processing system of kiln | |
| CN103512373A (en) | Energy-saving denitration device and method of cement dry-process kiln | |
| CN206262309U (en) | A kind of combined desulfurization and denitration device for coal-burning boiler | |
| CN103900392A (en) | Method and system for carrying out waste heat utilization, efficient filtration and unified purification on electric furnace flue gas | |
| CN211650305U (en) | High-temperature tail gas purification and waste heat recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20210325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |