CN104861991A - Coke oven flue gas recycling system and processing method - Google Patents
Coke oven flue gas recycling system and processing method Download PDFInfo
- Publication number
- CN104861991A CN104861991A CN201510196552.9A CN201510196552A CN104861991A CN 104861991 A CN104861991 A CN 104861991A CN 201510196552 A CN201510196552 A CN 201510196552A CN 104861991 A CN104861991 A CN 104861991A
- Authority
- CN
- China
- Prior art keywords
- gas
- coke oven
- waste
- mixer
- waste gas
- 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.)
- Pending
Links
Landscapes
- Industrial Gases (AREA)
Abstract
The invention discloses a coke oven flue gas recycling system and processing method, the coke oven flue gas recycling system includes a coke oven, a cooling device and a gas mixer, a gas inlet of the cooling device is connected with an exhaust gas outlet, and the cooling device is used for cooling exhaust gas produced after coke oven combustion, a gas inlet of the gas mixer is connected with a gas outlet of the cooling device, and the gas mixer is used for mixing oxygen and the cooled exhaust gas to form a mixed gas; the oxygen is outputted into the gas mixer via an oxygen producing device connected with the gas mixer; a gas outlet of the gas mixer is connected with a gas inlet of the coke oven, and is used for outputting the mixed gas into the coke oven to be used as a combustion-supporting gas. The coke oven flue gas recycling processing method solves the technical problems of too high coke oven combustion exhaust gas processing cost and serious environment pollution caused by no processing of the exhaust gas in the prior art, and the low cost, environmental protection, and energy saving technical effects can be implemented.
Description
Technical field
The present invention relates to coking technology field, particularly relate to a kind of coke oven flue gas recycle system and treatment process.
Background technology
China's coking industry is larger, the domestic coke output of 2014 is 4.76 hundred million tons, and that builds a coke oven makes an investment in more than 200,000,000 Renminbi, and work-ing life is more than 25 years, the current domestic pit kiln overwhelming majority is flue single-point burning structure, and average furnace life is within 10 years.
Play country on January 1st, 2015 and perform new oven pollutants emission standard, new oven pollutants emission standard requires that discharged nitrous oxides concentration is the highest at below 500mg/m3, but domestic more than 700 the coke oven flue gas discharge nitrous oxides concentration producing, generally at 500 ~ 1800mg/m3, can not meet new emission standard.
If in order to the new Type Coke Oven being redeveloped into sectional combustion all removed by these coke ovens by environment protection standard, by the investment of needs more than 1,400 hundred million, be difficult to realize in a short time, flue gas nitrogen oxide improvement can only be carried out to existing at product coke oven.But there is no the coke oven flue gas denitration technology of industrial applications on a large scale at present both at home and abroad, the technology researched and developed mostly is low-temperature catalyzed method denitrating technique, often cover needs investment more than 3000 ~ 9,000 ten thousand yuan, and for the burnt cost of coke ton more than 20 yuan, coal chemical enterprise is difficult to bear.
As can be seen here, remove the existing waste gas generated at the denitrating technique purification coke oven combustion ground at product coke oven or employing, cost is too high, and does not process can cause severe contamination to environment to waste gas.
Summary of the invention
The embodiment of the present invention provides a kind of coke oven flue gas recycle system and treatment process, for removing the existing waste gas generated at the denitrating technique purification coke oven combustion ground at product coke oven or employing to solve, cost is too high, and waste gas is not processed to the technical problem that can cause severe contamination to environment.
On the one hand, the embodiment of the present application provides following technical scheme:
A kind of coke oven flue gas recycle system, comprising:
Coke oven;
Heat sink, the air intake of described heat sink is connected with the waste gas air outlet of described coke oven, for lowering the temperature to the waste gas generated after described coke oven combustion;
Gas mixer, the air intake of described gas mixer is connected with the air outlet of described heat sink, for the described waste gas after mixture of oxygen and cooling, to generate gas mixture; Described oxygen exports described gas mixer to by the oxygenerator be connected with described gas mixer;
Wherein, the air outlet of described gas mixer is connected with the air intake of described coke oven, so that described gas mixture is inputted described coke oven as combustion-supporting gas.
Optionally, described system also comprises: gas blower, and described gas blower is connected between described heat sink and described gas mixer, for being delivered in described gas mixer by the described waste gas after described heat sink cooling.
Optionally, described system also comprises: smoke eliminator, described smoke eliminator is connected with described gas blower by lateral, and described lateral is arranged between described gas blower and described gas mixer, discharges with the described waste-gas cleaning after a part being lowered the temperature.
Optionally, described system also comprises: dry ice production device, and described dry ice production device is connected with described smoke eliminator, for receiving the waste gas that described smoke eliminator exports, and using described waste gas as dry ice production raw material.
Optionally, the oxygen content in described gas mixture is 15% ~ 26%.
Optionally, described heat sink is specially: flue gas waste heat recovery interchanger, while the waste gas for generating after described coke oven combustion carries out lowering the temperature, heats the liquid in described flue gas waste heat recovery interchanger.
Optionally, described system also comprises: chimney, and described chimney is connected with described coke oven, for when the described system fault, discharges described waste gas.
On the other hand, a kind of coke oven flue gas circulation process method is provided, comprises:
Extract the waste gas generated after burning in coke oven;
Cool described waste gas;
By cooled described waste gas and oxygen mix, generate gas mixture;
Described gas mixture is inputted described coke oven as combustion-supporting gas.
Optionally, the oxygen content in described gas mixture is 15% ~ 26%.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, the system and method that provides of the embodiment of the present application, after being lowered the temperature by the waste gas of coke oven combustion, is re-used as the combustion-supporting gas of coke oven with oxygen mix by heat sink, on the one hand, does not need expensive off-gas cleaning equipment, reduces off gas treatment cost; On the other hand, no longer introduce new nitrogen, avoid direct introducing air as combustion-supporting gas, a nitrogen content caused is too high, the problem that waste gas amount of nitrogen oxides is high, and the waste gas nitrogen content repeatedly after circulation is very low, achieves the technique effect of environmental protection.
2, the system and method that provides of the embodiment of the present application, with flue gas waste heat recovery interchanger as heat sink, while the waste gas generated after to described coke oven combustion is lowered the temperature, heat the liquid in described flue gas waste heat recovery interchanger, can generate low-pressure steam produces personal for coke-oven plant, realize environmental protection and energy saving.
3, the system and method that provides of the embodiment of the present application, owing to not introducing new nitrogen, adds the content of carbon dioxide in waste gas, and the waste gas that smoke eliminator is discharged as the raw material producing dry ice, can realize environmental protection and energy saving.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structure iron of the coke oven flue gas recycle system in the embodiment of the present invention;
Fig. 2 is the schema of coke oven flue gas circulation process method in the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of coke oven flue gas recycle system and treatment process, for removing the existing waste gas generated at the denitrating technique purification coke oven combustion ground at product coke oven or employing to solve, cost is too high, and waste gas is not processed to the technical problem that can cause severe contamination to environment.Realize low cost, environmental protection, energy-conservation technique effect.
In order to solve the technical problem that above-mentioned prior art exists, the general thought of the technical scheme that the embodiment of the present application provides is as follows:
A kind of coke oven flue gas recycle system, comprising:
Coke oven;
Heat sink, the air intake of described heat sink is connected with the waste gas air outlet of described coke oven, for lowering the temperature to the waste gas generated after described coke oven combustion;
Gas mixer, the air intake of described gas mixer is connected with the air outlet of described heat sink, for the described waste gas after mixture of oxygen and cooling, to generate gas mixture; Described oxygen exports described gas mixer to by the oxygenerator be connected with described gas mixer;
Wherein, the air outlet of described gas mixer is connected with the air intake of described coke oven, so that described gas mixture is inputted described coke oven as combustion-supporting gas.
Can be found out by foregoing, after being lowered the temperature by heat sink by the waste gas of coke oven combustion, be re-used as the combustion-supporting gas of coke oven with oxygen mix, on the one hand, not need expensive off-gas cleaning equipment, reduce off gas treatment cost; On the other hand, no longer introduce new nitrogen, avoid direct introducing air as combustion-supporting gas, a nitrogen content caused is too high, the problem that waste gas amount of nitrogen oxides is high, and the waste gas nitrogen content repeatedly after circulation is very low, achieves the technique effect of environmental protection.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
Embodiment one
In the present embodiment, provide a kind of coke oven flue gas recycle system, please refer to Fig. 1, Fig. 1 is the structure iron of the coke oven flue gas recycle system in the embodiment of the present invention, and described system comprises:
Coke oven 1;
Heat sink 2, the air intake of described heat sink 2 is connected with the waste gas air outlet of described coke oven 1, lowers the temperature for the waste gas generated after burning to described coke oven 1;
Gas mixer 3, the air intake of described gas mixer 3 is connected with the air outlet of described heat sink 2, for the described waste gas after mixture of oxygen and cooling, to generate gas mixture; Described oxygen exports described gas mixer 3 to by the oxygenerator 4 be connected with described gas mixer 3;
Wherein, the air outlet of described gas mixer 3 is connected with the air intake of described coke oven 1, described gas mixture is inputted described coke oven 1 as combustion-supporting gas.
The main theory of the application is according to being: the principal pollutant of the flue gas waste gas of coke oven combustion are oxynitride, it is mainly in combustion processes, 79% nitrogen in air is subject to combustion high temperature effect in coke oven vertical flame path, to react the nitrogen protoxide and nitrogen peroxide that produce with the oxygen in air, if reduction a nitrogen content, will greatly reduce the oxynitride in flue gas waste gas.And the present invention this be based on this principle, substitute air as combustion-supporting gas with the waste gas adding oxygen, decrease the content of nitrogen, repeatedly circulation after waste gas nitrogen content reduce in a large number.
The structure of the system that the application provides is described below in conjunction with the circulating treatment procedure of the described coke oven flue gas recycle system to waste gas.
In the embodiment of the present application, the connection of the connection of heat sink 2 and described coke oven 1, gas mixer 3 and described heat sink 2, gas mixer 3 and the connection of described coke oven 1 are all that the flue by sealing realizes, to avoid flue gas leaking in working cycle.
Please refer to Fig. 1, the arrow in Fig. 1 illustrates the flow direction of flue gas in the described coke oven flue gas recycle system.As shown in Figure 1, burn in coke oven 1 waste gas generated, and entered in heat sink 2 by flue.
Specifically, a gas blower can be set between coke oven 1 and heat sink 2, in the waste gas suction heat sink 2 generated to be burnt by coke oven 1.
In the embodiment of the present application, described heat sink 2 is specifically as follows: flue gas waste heat recovery interchanger, while waste gas for generating after described coke oven combustion carries out lowering the temperature, heat the liquid in described flue gas waste heat recovery interchanger, generating low-pressure steam produces personal for coke-oven plant, realize energy-conservation by the utilization of the effective environmental protection to waste gas residual heat.
In specific implementation process, the temperature of waste gas that coke oven produces is 180 DEG C ~ 350 DEG C, and after heat sink 2, temperature reduces to 140 DEG C ~ 160 DEG C, follow-uply occurs danger of combustion with during oxygen mix to avoid gas temperature too high causing.
After being lowered the temperature by heat sink 2, waste gas input gas mixer 3.
In the embodiment of the present application, be provided with gas blower 5 between described heat sink 2 and described gas mixer 3, described gas blower 5 is delivered in described gas mixer 3 for the described waste gas after being lowered the temperature by described heat sink 2.
Further, described gas blower 5 can be frequency conversion gas blower, can regulate its circulation transfer rate according to waste gas formation speed.
Specifically, the oxygen in gas mixer 3 is that the oxygenerator by being connected with gas mixer 3 is prepared and provided, and the oxygen content in mixed described gas mixture is 15% ~ 26%, to realize best combustion effect.
Then, the gas mixture mixed is delivered to as combustion-supporting gas in coke oven by pipeline again, and it is combustion-supporting to carry out coke oven heating.Specifically, gas mixture delivers to the former gas inlet of each flue gas exchanger of coke oven vault by pipeline, enters coke oven.
So far, be a loop cycle of coke oven flue gas, the waste gas that its afterfire generates proceeds circular treatment, and to make the nitrogen content in waste gas fewer and feweri, carbon dioxide content increases gradually.
In the embodiment of the present application, in order to avoid the exhaust gas volumn of circulation continues to increase, lateral can be set to carry out the progressively discharge of waste gas.
Specifically, smoke eliminator 6 can be set, described smoke eliminator 6 is connected with described gas blower 5 by lateral, described lateral is arranged between described gas blower 5 and described gas mixer 3, discharge with the described waste-gas cleaning after a part being lowered the temperature, the waste gas of discharge is about about 25% ~ 40% of global cycle exhausted air quantity.
Further, because nitrogen content in the waste gas that smoke eliminator 6 is discharged is very low, carbon dioxide content is very high, can 50% ~ 80% be reached, the waste gas of discharge, can economically as resource recycling after desulfurization, for the production of dry ice or as chemosynthesis gas,, accomplish coking produce do not discharge carbonic acid gas or do not discharge, few discharging waste gas.
Specifically, dry ice production device can be connected at the venting port of described smoke eliminator, for receiving the waste gas that described smoke eliminator exports, and using described waste gas as dry ice production raw material.
Further, in the embodiment of the present application, in order to avoid when carrying coke oven flue gas recycle system fault, occur the danger that coke oven combustion waste gas cannot be discharged, can also arrange chimney 7, described chimney 7 is connected with described coke oven 1, for when the described system fault, discharge described waste gas.
Specifically, through the waste gas of circulation, before input coke oven, its oxygen level is almost consistent with the oxygen level in air, just instead of most nitrogen with carbonic acid gas, therefore it changes little as ignition dope to the situation of coke oven combustion, pressures inside does not need transformation, has saved cost, and carbon dioxide content is high in combustion gas, nitrogen content is low, eliminates waste gas nitrogen oxides pollution from source, makes combustion gas meet environmental requirement.
Further, because the carbon dioxide content in combustion gas is high, concentration can bring up to more than 50%, and recycle in waste gas as resource, make coke oven accomplish zero waste gas emission, also reclaim and make use of fume afterheat, production low-pressure steam is produced personal for coke-oven plant, realize environmental protection and energy saving.
According to practical proof, after adopting the device of this invention, coke oven produces energy-conservation more than 10%, the amount of nitrogen oxides of flue gas waste gas is far below the up-to-date coking pollutant emission standard of country, carbon dioxide in flue gas content reaches 50 ~ 80%, after desulfurization, can economically as resource recycling (for the production of dry ice or as chemosynthesis gas), discharging waste gas is only at most 34% of former technique.
Based on same inventive concept, additionally provide embodiment two.
Embodiment two
Provide a kind of coke oven flue gas circulation process method in the present embodiment, please refer to Fig. 2, Fig. 2 is the schema of coke oven flue gas circulation process method in embodiment, and the method comprises:
Step S101, extracts the waste gas generated after burning in coke oven;
Step S102, cools described waste gas;
Step S103, by cooled described waste gas and oxygen mix, generates gas mixture;
Step S104, inputs described coke oven as combustion-supporting gas using described gas mixture.
In the embodiment of the present application, the oxygen content in described gas mixture is 15% ~ 26%.
System in the method provided in the present embodiment and embodiment one, based on the aspect of two under same inventive concept, detailed description is done to system above, so those skilled in the art can according to the implementation process of the method in aforementioned understanding the present embodiment be described clearly, succinct in order to specification sheets, has just repeated no more at this.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
1, the system and method that provides of the embodiment of the present application, after being lowered the temperature by the waste gas of coke oven combustion, is re-used as the combustion-supporting gas of coke oven with oxygen mix by heat sink, on the one hand, does not need expensive off-gas cleaning equipment, reduces off gas treatment cost; On the other hand, no longer introduce new nitrogen, avoid direct introducing air as combustion-supporting gas, a nitrogen content caused is too high, the problem that waste gas amount of nitrogen oxides is high, and the waste gas nitrogen content repeatedly after circulation is very low, achieves the technique effect of environmental protection.
2, the system and method that provides of the embodiment of the present application, with flue gas waste heat recovery interchanger as heat sink, the waste gas generated after to described coke oven combustion heats the liquid in described flue gas waste heat recovery interchanger while lowering the temperature, and can generate low-pressure steam and produce for coke-oven plant personal.
3, the system and method that provides of the embodiment of the present application, owing to not introducing new nitrogen, adds the content of carbon dioxide in waste gas, and the waste gas that smoke eliminator is discharged can as the raw material producing dry ice.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a coke oven flue gas recycle system, is characterized in that, comprising:
Coke oven;
Heat sink, the air intake of described heat sink is connected with the waste gas air outlet of described coke oven, for lowering the temperature to the waste gas generated after described coke oven combustion;
Gas mixer, the air intake of described gas mixer is connected with the air outlet of described heat sink, for the described waste gas after mixture of oxygen and cooling, to generate gas mixture; Described oxygen exports described gas mixer to by the oxygenerator be connected with described gas mixer;
Wherein, the air outlet of described gas mixer is connected with the air intake of described coke oven, so that described gas mixture is inputted described coke oven as combustion-supporting gas.
2. the system as claimed in claim 1, is characterized in that, also comprises:
Gas blower, described gas blower is connected between described heat sink and described gas mixer, for being delivered in described gas mixer by the described waste gas after described heat sink cooling.
3. system as claimed in claim 2, is characterized in that, also comprise:
Smoke eliminator, described smoke eliminator is connected with described gas blower by lateral, and described lateral is arranged between described gas blower and described gas mixer, discharges with the described waste-gas cleaning after a part being lowered the temperature.
4. system as claimed in claim 3, is characterized in that, also comprise:
Dry ice production device, described dry ice production device is connected with described smoke eliminator, for receiving the waste gas that described smoke eliminator exports, and using described waste gas as dry ice production raw material.
5. the system as claimed in claim 1, is characterized in that, the oxygen content in described gas mixture is 15% ~ 26%.
6. the system as claimed in claim 1, is characterized in that, described heat sink is specially: flue gas waste heat recovery interchanger, while the waste gas for generating after described coke oven combustion carries out lowering the temperature, heats the liquid in described flue gas waste heat recovery interchanger.
7. the system as described in as arbitrary in claim 1-6, is characterized in that, also comprise:
Chimney, described chimney is connected with described coke oven, for when the described system fault, discharges described waste gas.
8. a coke oven flue gas circulation process method, is characterized in that, comprising:
Extract the waste gas generated after burning in coke oven;
Cool described waste gas;
By cooled described waste gas and oxygen mix, generate gas mixture;
Described gas mixture is inputted described coke oven as combustion-supporting gas.
9. method as claimed in claim 8, it is characterized in that, the oxygen content in described gas mixture is 15% ~ 26%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196552.9A CN104861991A (en) | 2015-04-23 | 2015-04-23 | Coke oven flue gas recycling system and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196552.9A CN104861991A (en) | 2015-04-23 | 2015-04-23 | Coke oven flue gas recycling system and processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104861991A true CN104861991A (en) | 2015-08-26 |
Family
ID=53908181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510196552.9A Pending CN104861991A (en) | 2015-04-23 | 2015-04-23 | Coke oven flue gas recycling system and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104861991A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199749A (en) * | 2015-11-03 | 2015-12-30 | 济南弘科信泰环保技术有限公司 | NOx control method and device for coke oven stack gas |
| CN106701108A (en) * | 2017-03-09 | 2017-05-24 | 安徽工业大学 | Double-control pipe network device for circulatory flue gas of coking furnace and use method of double-control pipe network device |
| CN107327835A (en) * | 2016-04-28 | 2017-11-07 | 吴江 | A kind of denitrating system and its method |
| CN107504824A (en) * | 2017-08-03 | 2017-12-22 | 北京长信太和节能科技有限公司 | The air dilution system of coke oven flue gas recycling |
| CN107840337A (en) * | 2017-11-08 | 2018-03-27 | 中冶华天南京工程技术有限公司 | A kind of system and method that dry ice is prepared using blast furnace gas and liquid oxygen |
| CN114717014A (en) * | 2022-03-16 | 2022-07-08 | 程相魁 | High-temperature low-nitrogen combustion coke oven |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043333A (en) * | 1988-12-10 | 1990-06-27 | 克鲁普科普斯有限公司 | When heating rich gas coke oven or complex thermal coke, reduce the method for content of nitrogen oxide in the waste gas and in order to implement the oven battery of this method |
| CN1417520A (en) * | 2001-11-01 | 2003-05-14 | 攀枝花新钢钒股份有限公司氧气厂 | Comburant gas obtaining method for furnace and niln |
| CN101839476A (en) * | 2010-06-22 | 2010-09-22 | 华中科技大学 | Method for micro positive pressure oxygen-enriched combustion of pulverized coal |
| CN101839473A (en) * | 2009-03-16 | 2010-09-22 | 胡建廷 | Flue gas recirculation high temperature air energy-saving and environmental protection combustion technology |
| US20120024206A1 (en) * | 2009-03-06 | 2012-02-02 | Metso Power Oy | Method for reducing nitrogen oxide emissions in oxyfuel combustion |
| CN102719585A (en) * | 2012-06-29 | 2012-10-10 | 中冶南方工程技术有限公司 | Method for improving heat efficiency of rotary hearth furnace and lowering smoke quantity |
| KR20130065037A (en) * | 2011-12-09 | 2013-06-19 | 주식회사 포스코 | Method for reducing nox by flue gas recirculation |
| CN103363811A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Combustion method of high-temperature oxygen-mixed flue gas |
| CN105295962A (en) * | 2014-07-28 | 2016-02-03 | 宝山钢铁股份有限公司 | Method and device for reducing emission of NOx in waste flue gas of coke oven |
-
2015
- 2015-04-23 CN CN201510196552.9A patent/CN104861991A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043333A (en) * | 1988-12-10 | 1990-06-27 | 克鲁普科普斯有限公司 | When heating rich gas coke oven or complex thermal coke, reduce the method for content of nitrogen oxide in the waste gas and in order to implement the oven battery of this method |
| CN1417520A (en) * | 2001-11-01 | 2003-05-14 | 攀枝花新钢钒股份有限公司氧气厂 | Comburant gas obtaining method for furnace and niln |
| US20120024206A1 (en) * | 2009-03-06 | 2012-02-02 | Metso Power Oy | Method for reducing nitrogen oxide emissions in oxyfuel combustion |
| CN101839473A (en) * | 2009-03-16 | 2010-09-22 | 胡建廷 | Flue gas recirculation high temperature air energy-saving and environmental protection combustion technology |
| CN101839476A (en) * | 2010-06-22 | 2010-09-22 | 华中科技大学 | Method for micro positive pressure oxygen-enriched combustion of pulverized coal |
| KR20130065037A (en) * | 2011-12-09 | 2013-06-19 | 주식회사 포스코 | Method for reducing nox by flue gas recirculation |
| CN103363811A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Combustion method of high-temperature oxygen-mixed flue gas |
| CN102719585A (en) * | 2012-06-29 | 2012-10-10 | 中冶南方工程技术有限公司 | Method for improving heat efficiency of rotary hearth furnace and lowering smoke quantity |
| CN105295962A (en) * | 2014-07-28 | 2016-02-03 | 宝山钢铁股份有限公司 | Method and device for reducing emission of NOx in waste flue gas of coke oven |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199749A (en) * | 2015-11-03 | 2015-12-30 | 济南弘科信泰环保技术有限公司 | NOx control method and device for coke oven stack gas |
| CN107327835A (en) * | 2016-04-28 | 2017-11-07 | 吴江 | A kind of denitrating system and its method |
| CN106701108A (en) * | 2017-03-09 | 2017-05-24 | 安徽工业大学 | Double-control pipe network device for circulatory flue gas of coking furnace and use method of double-control pipe network device |
| CN106701108B (en) * | 2017-03-09 | 2022-03-08 | 安徽工业大学 | Coke oven circulating flue gas double-control pipe network device and using method thereof |
| CN107504824A (en) * | 2017-08-03 | 2017-12-22 | 北京长信太和节能科技有限公司 | The air dilution system of coke oven flue gas recycling |
| CN107840337A (en) * | 2017-11-08 | 2018-03-27 | 中冶华天南京工程技术有限公司 | A kind of system and method that dry ice is prepared using blast furnace gas and liquid oxygen |
| CN107840337B (en) * | 2017-11-08 | 2019-10-22 | 中冶西北工程技术有限公司 | A kind of system and method preparing dry ice using blast furnace gas and liquid oxygen |
| CN114717014A (en) * | 2022-03-16 | 2022-07-08 | 程相魁 | High-temperature low-nitrogen combustion coke oven |
| CN114717014B (en) * | 2022-03-16 | 2023-12-08 | 程相魁 | High-temperature low-nitrogen combustion coke oven |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104861991A (en) | Coke oven flue gas recycling system and processing method | |
| US20170108275A1 (en) | Process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas | |
| CN106215695A (en) | A kind of sinter the out of stock system of flue gas simultaneous desulfurization and its implementation | |
| CN204198421U (en) | A kind of molten sulfur pond gas recovery system | |
| CN104792186A (en) | Sintering flue gas energy-saving type denitrification system | |
| CN110273065A (en) | A kind of iron ore microwave sintering method | |
| CN109569183B (en) | Comprehensive circulation treatment method and treatment device for flue gas of double-series sintering system | |
| CN105295962A (en) | Method and device for reducing emission of NOx in waste flue gas of coke oven | |
| CN107115775B (en) | Iron ore sintering flue gas sectional enrichment self-heat exchange emission reduction SOxAnd NOxMethod of producing a composite material | |
| CN104801161A (en) | Glass melting furnace flue gas desulfurization and denitrification process taking petroleum coke as main fuel and equipment of glass melting furnace flue gas desulfurization and denitrification process | |
| CN102644922A (en) | Incineration treatment device for nitrogen-containing organic wastes and incineration treatment process | |
| CN212293338U (en) | Carbon dioxide purification and trapping system suitable for cement kiln | |
| CN111569623A (en) | Internal and external circulation system and circulation method for sintering flue gas | |
| CN105688667A (en) | Method for carrying out denitration on sintering flue gas by utilizing sensible heat of blast furnace slag | |
| CN110484283B (en) | Comprehensive recovery process and system for coking waste heat | |
| CN104101225B (en) | For improving the system and method for calcium carbide stove exhaust comprehensive utilization ratio | |
| CN106554001A (en) | A kind of acid-making process of comprehensive utilization hydrogen sulfide waste gas and Waste Sulfuric Acid | |
| CN106925106A (en) | Wet desulphurization method in a kind of CFB boiler stove | |
| CN106925108A (en) | A kind of waste heat of coke-oven flue gas and desulphurization denitration dust pelletizing system | |
| CN102954476A (en) | Processing method of tail gas containing trace organic constituents | |
| CN111994915A (en) | Method and device for producing sodium silicate and sulfuric acid from high-sulfur-content salt | |
| CN106268230A (en) | A kind of waste heat of coke-oven flue gas reclaim and purify system and technique | |
| CN110141947A (en) | A kind of coke oven flue gas carbon dioxide discharge-reduction technique and system | |
| CN104876190A (en) | Oxygen-enriched combustion-supporting waste acid cracking process | |
| CN108707710A (en) | A kind of method coke oven flue gas resource processing and utilized |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170713 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Applicant after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Applicant before: Wuhan Iron & Steel (Group) Corp. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |
|
| RJ01 | Rejection of invention patent application after publication |