CN101822946A - Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof - Google Patents
Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof Download PDFInfo
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Abstract
The invention relates to a low energy consumption sintering flue gas dioxin emission-reducing system and a method thereof. The system comprises a main flue exhaust pipeline, a main dust remover, an air blower, a dioxin desorption system, a closed gas hood, a high dioxin compound flue gas flue, a circulating air pipeline, a dioxin compound desorption flue, a bypass flue, a dust remover, the other air blower, a desulfurizing tower and a chimney. A low-concentration area exhaust box is connected with the main flue exhaust pipeline, passes through the main dust remover, the air blower and the desulfurizing tower in sequence to reach the chimney, and then the flue gas is exhausted to the air. The closed gas hood covers above a sintering machine board trolley; one end of the high dioxin compound flue gas flue is connected with a high-concentration area exhaust box; and the other end of the high dioxin compound flue gas flue is connected with the dioxin compound desorption flue and the main dust remover of the main flue exhaust pipeline. The method comprises the steps of collecting flue gas, removing dioxin in the flue gas, removing dust, desulfurizing, exhausting to the air and the like. The invention greatly reduces the flue gas to be purified and treated, reduces the construction investment and the operation cost, and is beneficial to reducing the emission of various pollutants in sintering flue gas.
Description
Technical field
The present invention relates to the reduction of discharging of field of metallurgy sintering circuit dioxin and the heat recovery of sintering device flue gas, specifically relate to low energy consumption sintering dioxins in flue gas emission-reducing system and method thereof in the preceding sintering circuit of a kind of steel and iron industry iron.
Background technology
" about the Convention of Stockholm of persistence organic pollutant " formally comes into force to China on November 11st, 2004, and dioxin is that artificial source is not intended to one of three kinds of persistence organic pollutants (POPs) that produce and discharge among the pact annex C.According to the 5th clause of pact, pact contracting party needs to take best practicable technology/suitable environment to put into practice (BAT/BEP) to POPs among the annex C from come into force in two years and reduces the discharging action plan, should be as early as possible and in pact contracting party phase in from coming into force 4 years.
Dioxin compounds is many chloros dibenzo dioxin (Polychlorinateddibenzo-p-dioxin PCDDs) and many chloros dibenzo furan (Polychlorinate dibenzofuran, PCDFs) general name (being abbreviated as PCDD/F), it is one of compound of present known toxicity maximum, and have irreversible carcinogenic, teratogenesis, mutagenesis " three cause " toxicity, being one of 12 kinds of POPs of regulation in " about the Convention of Stockholm of persistence organic pollutant " and " People's Republic of China (PRC) fulfils＜about the Convention of Stockholm of persistent organism〉national implementation plan ", also is one of POPs of toxicity maximum.
Dioxin is the white crystals body, is a kind of highly stable compound, 303 ℃～306 ℃ of fusing points, 421 ℃～447 ℃ of boiling points do not have polarity, and the utmost point is insoluble in water and soda acid, dissolve in most of organic solvent, just begin more than 700 ℃ to decompose, degraded needs more than 1100 ℃ at a high speed; Have fat-soluble and lipophilicity, can shift being enriched in food chain and accumulating in the adipose tissue by lipid, the half-life of discharging human body and animal body is 5～10 years, average out to 7 years; The extremely difficult natural degradation of occurring in nature, the half-life in soil is 9～12 years; Its vapour pressure is extremely low (to be 2.3 * 10
-4Pa, the existence that seldom can dissociate except that can being adsorbed by the aerosol particle in air mainly accumulates in ground, plant surface or the rivers,lakes and seas mud.
Steel smelting procedure is to be not intended to one of source of discharging persistence organic pollutant, and the sintering process of iron and steel production is attended by POPs class (dioxin, furans, Polychlorinated biphenyls, hexachloro-benzene, many chloronaphthalenes etc.) production of by-products, discharging and the pollution problem that is not intended to discharging.Steel and iron industry is one of PCDD/F discharging industry of domestic maximum.
For the PCDD/F that sintering machine produces, domesticly all do not take special control measures basically, be to utilize dedusting, desulfurization etc. attaching to remove a part of PCDD/F mostly.Along with the reduction and the hot hot metal charging of electric furnace of China's electric steel ratio, the PCDD/F total amount of sintering machine discharging had accounted for about 95% of whole steel industry in recent years.Therefore, the reduction of discharging of steel industry PCDD/F at first should be started with from sintering machine.
In view of this, seek a kind of low energy consumption sintering dioxins in flue gas emission-reducing system and method thereof and become pursuing one's goal of these those skilled in the art.
Summary of the invention
Task of the present invention provides a kind of low energy consumption sintering dioxins in flue gas emission-reducing system and method thereof; it has solved above-mentioned existing in prior technology problem; meet environmental protection requirement and energy-saving and emission-reduction requirement, to reach the dioxin emission reducing that reduces in the sintering circuit, the purpose of protection environment.
Technical solution of the present invention is as follows:
A kind of low energy consumption sintering dioxins in flue gas emission-reducing system, according to the dioxin concentration of region height all wind chambers of sintering pallet bottom are divided into area with high mercury wind chamber and low concentration region wind chamber, comprise that main smoke discharging pipe, main deduster, blower fan, dioxin remove system, airtight gas hood, high dioxin compounds flue gas flue, circulated air pipeline, dioxin compounds and remove flue, bypass flue, deduster, blower fan, desulfurizing tower and chimney;
Described low concentration region wind chamber connects main smoke discharging pipe, arrives chimney by main deduster, blower fan, desulfurizing tower successively, is discharged in the atmosphere;
Described airtight gas hood cover cap is above sintering pallet, one end of described high dioxin compounds flue gas flue connects the area with high mercury wind chamber, the other end of high dioxin compounds flue gas flue is divided into two-way, wherein one the tunnel connects the main deduster that dioxin compounds removes flue and main exhaust duct successively, and another road connects circulated air pipeline and airtight gas hood successively; Described dioxin compounds removes flue and is provided with dioxin and removes system, and described circulated air pipeline is provided with deduster and blower fan;
Described main smoke discharging pipe connects high dioxin compounds flue gas flue by the bypass flue.
Described dioxin compounds removes the two ends that dioxin on the flue removes system and is respectively equipped with valve and valve.
Described high dioxin compounds flue gas flue is provided with valve.
Described bypass flue is provided with valve.
Connect the valve that the central cooler hot blast is sneaked in control before the deduster on the described circulated air pipeline.
Described area with high mercury wind chamber is arranged on from the sintering machine head end of sintering pallet to 55% to 95% length areas tail.
Described deduster is at least a in cyclone dust collectors or the iris type deduster.
It is at least a in activated carbon adsorption unit, catalytic decomposition device and the selective catalytic reduction denitration device that described dioxin removes system.
A kind of low energy consumption sintering dioxins in flue gas discharge-reducing method adopts described low energy consumption sintering dioxins in flue gas emission-reducing system, may further comprise the steps:
A, collect the flue gas of area with high mercury, therefrom extract the part of smoke dedusting after, the dioxin in another part flue gas is removed simultaneously as combustion-supporting gas in the top that is circulated back to sintering machine;
B, collect the flue gas of low concentration region, mixes dedusting afterwards with the flue gas of removing or adsorbed dioxin;
C, with the common desulfurization of above-mentioned two-part flue gas;
D, the gas after the desulfurization is discharged into atmosphere.
The exhaust gas volumn of cyclic part is that 70%～80% of high dioxin exhaust gas volumn is 35%～40% of a full exhaust gas volumn in the described steps A, and the flue gas of another part is that 20%～30% of high dioxin exhaust gas volumn is 10%～15% of a full exhaust gas volumn.
The objective of the invention is according to the character of PCDD/F and the production of sintering machine PCDD/F, a kind of System and method for that also can reduce discharging dioxin with low investment, low operating cost by a relatively large margin is provided, and it is practical more, the national conditions that are fit to China are more compared with other PCDD/F discharge-reducing method and to be accepted by iron and steel enterprise easilier.
Basic thought of the present invention is based on following consideration: by PCDD/F is formed and each bellows flue gas of sintering machine in the research of PCDD/F toxic equivalent change in concentration rule, find that PCDD/F mainly is created in 55%～95% place (peak concentration roughly appears at 80% place) along sintering device handpiece to the tail horizontal direction, the generation of PCDD/F accounted for about 80% of whole sintering process generation in this was interval, sintering device handpiece to tail can be divided into high PCDD/F zone (being the a-quadrant) and low PCDD/F zone (being the B zone) in view of the above.
Be divided into two parts processing with the independent collection of the high PCDD/F flue gas in a-quadrant and with it: part of smoke is circulated to sintering machine top as combustion air, and the PCDD/F in this part flue gas can be decomposed under the high temperature of 1300 ℃ of sinter beds fast; Another part flue gas send PCDD/F to remove system purification and handles, and can adopt the absorption method that combines with dedusting to remove, and also can adopt catalytic decomposition method etc.Owing to only the a-quadrant flue gas is handled, some high PCDD/F flue gas participates in circulation in addition, having significantly reduced needs the exhaust gas volumn handled, has reduced construction investment and operating cost that PCDD/F removes system significantly.
Key of the present invention is, starts with from generation and each bellows PCDD/F toxic equivalent concentration of analyzing sintering process PCDD/F, finds that sintering machine PCDD/F mainly is created in 55%～95% zone apart from sintering device handpiece to tail; By analog computation, think that the generation of this regional PCDD/F accounts for 80% of the living amount of gross output greatly, collect the high dioxin flue gas that needs purified treatment selectively by the height of PCDD/F toxic equivalent concentration.
By the formation of analysis sintering process PCDD/F and the Changing Pattern of toxic equivalent concentration, the high PCDD/F flue gas in a-quadrant is collected separately, in this part flue gas 70%～80% is circulated to sintering pallet top as combustion air, and the PCDD/F in the circulating flue gas can be decomposed fast by 1300 ℃ bed of material high temperature.In addition, also contain certain density CO and some organic matters in the flue gas, the sensible heat of this part flue gas and latent heat can both be fully used, and can reduce the use amount about 8% of sintering solid fuel, have apparent in view energy-saving effect.
Carry out purified treatment for the high PCDD/F flue gas in remaining 20%～30% a-quadrant, need the high PCDD/F exhaust gas volumn of purified treatment to reduce to about 10% of full exhaust gas volumn this moment, and the construction investment of PCDD/F cleaning system and operating cost all will reduce significantly.
Adopt System and method for of the present invention to help the reduction of discharging of other multiple pollutant.Because SO in the minimizing of discharging exhaust gas volumn and the flue gas
2The enrichment of concentration improves, and helps improving SO
2Removal efficiency; Because the minimizing of discharging exhaust gas volumn helps improving efficiency of dust collection, discharge quantity of particulate matter can reduce 1/3～1/2; For NOx, some material in the sinter bed can decompose NOx under hot conditions, and resolution ratio can reach about 80%, helps the reduction of discharging of NOx; For the PCB except that PCDD/F (Polychlorinated biphenyls), PAH multiple organic matters such as (polycyclic aromatic hydrocarbons (PAH)s) in the circulating flue gas, can both be sintered the high-temperature region of the bed of material more than 1200 ℃ and decompose fast, can not increase the purpose that construction investment and operating cost reach multiple pollution reduction.
The present invention makes it compared with prior art owing to adopted above technical scheme, and the present invention has the following advantages:
This process system is simple, construction, installation, operational management and repair and maintenance are all more convenient, the dioxin total release can reduce by 60%～80% (size that depends on a-quadrant collection exhaust gas volumn), and non-secondary pollution, and the end product quality to sintering deposit after putting into operation does not influence basically.
The present invention has tangible effects of energy saving and emission reduction, is more suitable for the national conditions of China; Reduce discharging with full dioxins in flue gas and to compare, have fairly obvious investment advantage and operating cost advantage, accepted easilier by domestic iron and steel enterprises.
Description of drawings
Fig. 1 is the structural representation of a kind of low energy consumption sintering dioxins in flue gas emission-reducing system of the present invention.
Fig. 2 is the flow chart of a kind of low energy consumption sintering dioxins in flue gas discharge-reducing method of the present invention.
Fig. 3 is the schematic diagram that each wind chamber of sintering machine is discharged the PCDD/F relative concentration situation of change in the flue gas among the embodiment.
Reference numeral:
1 is the area with high mercury wind chamber, and 2 is deduster, and 3 is blower fan, 4 is the dioxin adsorption system, and 5 is airtight gas hood, and 6 is high dioxin compounds flue gas flue, 7 is the circulated air pipeline, and 8 for dioxin compounds removes flue, and 9 are the bypass flue, 10 is valve, and 11 is valve, and 12 is main deduster, 13 is blower fan, and 14 is valve, and 15 is valve, 16 is valve, and 17 is desulfurizing tower, and 18 is chimney.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is elaborated.
Referring to Fig. 1, a kind of low energy consumption sintering dioxins in flue gas emission-reducing system of the present invention mainly removes system 4, airtight gas hood 5, high dioxin compounds flue gas flue 6, circulated air pipeline 7, dioxin compounds by area with high mercury wind chamber 1, deduster 2, blower fan 3, dioxin and removes flue 8, bypass flue 9, valve 10, valve 11, main deduster 12, blower fan 13, valve 14, valve 15, valve 16, desulfurizing tower 17, chimney 18 and form.
Dioxin concentration according to the region just is divided into area with high mercury wind chamber 1 and low concentration region wind chamber with all wind chambers of sintering pallet bottom.The low concentration region wind chamber connects main smoke discharging pipe, arrives chimney 18 by main deduster 12, blower fan 13, desulfurizing tower 17 successively, is discharged in the atmosphere.Airtight gas hood 5 cover caps are above sintering pallet, one end of high dioxin compounds flue gas flue 6 connects area with high mercury wind chamber 1, the other end of high dioxin compounds flue gas flue 6 is divided into two-way, wherein one the tunnel connects the main deduster 12 that dioxin compounds removes flue 8 and main exhaust duct successively, and another road connects circulated air pipeline 7 and airtight gas hood 5 successively.Dioxin compounds removes and dioxin is set on the flue 8 removes system 4, and deduster 2 and blower fan 3 are set on the circulated air pipeline 7.Main smoke discharging pipe connects high dioxin compounds flue gas flue 6 by bypass flue 9.
The two ends that dioxin compounds removes the dioxin adsorption system 4 on the flue 8 are provided with valve 11 and valve 10 respectively.High dioxin compounds flue gas flue 6 is provided with valve 15, and bypass flue 9 is provided with valve 14, and valve-off 15, Open valve 14 when whole dioxin emission reducing system need overhaul simultaneously can not influence SINTERING PRODUCTION like this.Before the deduster on the circulated air pipeline 72, connect the valve 16 that the central cooler hot blast is sneaked in control, can mix the central cooler hot blast by the mixing wind tube road in case of necessity, regulate the purpose that circulating flue gas oxygen content and circulating flue gas balance do not reduce the circulating flue gas temperature again thereby reach.
Area with high mercury wind chamber 1 is arranged on from the sintering machine head end of sintering pallet to 55% to 95% length areas tail.
It can be a kind of in activated carbon adsorption unit, catalytic decomposition device and the selective catalytic reduction denitration device that dioxin removes system 4.
Referring to Fig. 2, by a kind of low energy consumption sintering dioxins in flue gas discharge-reducing method of the present invention, adopt above-mentioned low energy consumption sintering dioxins in flue gas emission-reducing system, may further comprise the steps:
A, collect the flue gas of area with high mercury, therefrom extract the part of smoke dedusting after, the dioxin in another part flue gas is removed simultaneously as combustion-supporting gas in the top that is circulated back to sintering machine.
B, collect the flue gas of low concentration region, mixes dedusting afterwards with the flue gas of removing or adsorbed dioxin.
C, with the common desulfurization of above-mentioned two-part flue gas.
D, the gas after the desulfurization is discharged into atmosphere.
Wherein in the steps A, the area with high mercury flue gas of collecting accounts for whole the full exhaust gas volumn about 50% of sintering machine separately, by analog computation, thinks that the generation of this regional dioxin accounts for 80% of the total generation of PCDD/F greatly.The exhaust gas volumn of cyclic part is 70%～80% of a high concentration region exhaust gas volumn, and the exhaust gas volumn that another part does not circulate is 20%～30% of a high concentration region exhaust gas volumn, and carries out dust removal operation after the flue gas of low concentration region mixes.
The present invention collects separately the high dioxin flue gas in a-quadrant, and 70%～80% of this part flue gas is recycled to sintering pallet top as combustion air through circulation deduster 2, circulating fan 3 and circulation petticoat pipe 5, the dioxin in the flue gas is decomposed fast by high temperature by sinter bed the time.20%～30% high dioxin flue gas of circulation does not remove behind the device by dioxin and becomes owner of exhaust duct, carries out dedusting and desulfurization again, perhaps incorporates main flue gas according to the situation that removes of PCDD/F into after main deduster, before the desulfurizer.
The present invention all is suitable for the reduction of discharging of new reorganization and expansion and existing sintering device flue gas dioxin, and the specific embodiment is as follows:
By researching and analysing, height according to dioxin toxic equivalent concentration in each bellows flue gas is divided into high PCDD/F zone (a-quadrant) and low PCDD/F zone (B zone) with sintering device handpiece to each bellows of tail, as shown in Figure 3, collect the subregion: high PCDD/F zone is roughly from sintering device handpiece to tail the zone (a-quadrant) 55% to 95% place, and this extraneous zone is low PCDD/F zone (B zone).
Choose the high bellows of dioxin concentration (a-quadrant) its flue gas is collected separately, wherein 70%～80% high PCDD/F flue gas enters the circulation airduct, is recycled to the top of sintering machine as combustion air through the circulation deduster after removing the particle in the flue gas; Dustiness in the flue gas can satisfy the fan operation needs and get final product, and can adopt investment is lower, operating cost is lower cyclone dust collectors even baffle plate deduster.
The high PCDD/F flue gas of residue 20%～30% enters PCDD/F and removes flue, after removing the dioxin system and become owner of exhaust duct and discharge after dedusting, desulfurization with the low PCDD/F flue gas in B zone, valve-off 10,11 gets final product when dioxin removes system and needs repairing.
The PCDD/F cleaning system can be an adsorbent equipment, and purification efficiency can reach more than 90%, and dust pelletizing system and desulphurization system are sent in the low PCDD/F flue gas merging in flue gas after it is handled and B zone, purify back up to standard discharging.Adsorbent can be the big fine grained active carbon of specific area, also can be bigger finely-ground coke of specific area or brown coal powder, and it is even as far as possible to require to spray into the distribution of adsorbent in flue gas.
Selective-catalytic-reduction denitrified (SCR denitration) also has good removal effect to PCDD/F, and purification efficiency can reach about 80%, but this system only is applicable to clean sinter fume, and total PCDD/F removal efficiency can reach 60%～70%.This system can only be located at after the deduster, and the SCR method has extremely strict requirement to the dustiness in the sinter fume, the flue gas after PCDD/F removes with merge through the low PCDD/F flue gas in the zone of the B after the dedusting after directly send desulphurization system, purifies back up to standard and discharges.
Suggestion is surveyed PCDD/F when having ready conditions, and determines concrete high PCDD/F bellows on this basis.
In sum, low energy consumption sintering dioxins in flue gas emission-reducing system of the present invention and method thereof are divided into high dioxin zone (a-quadrant) and low dioxin zone (B zone) by the formation of analysis sintering process dioxin and the Changing Pattern of toxic equivalent concentration with each wind chamber of sintering pallet bottom.High dioxin flue gas is collected separately, and 70%～80% high dioxin flue gas (roughly be equivalent to full exhaust gas volumn 35%～40%) is circulated to sintering pallet top as combustion air, dioxin in the circulating flue gas is sintered bed of material pyrolytic, only remaining 20%～30% not circulating flue gas (be equivalent to full exhaust gas volumn 10%～15%) is carried out purified treatment.Not only reduced the exhaust gas volumn that needs purified treatment significantly, reduced construction investment and operating cost, and the sensible heat in the circulating flue gas and latent heat is fully used all, helps the reduction of discharging of the multiple pollutant of sinter fume simultaneously, non-secondary pollution produces, and has tangible effects of energy saving and emission reduction.Whole system is fairly simple, construction, installation, operational management and repair and maintenance are all more convenient, disliking emission-reduction technologies with full flue gas two compares and has fairly obvious investment advantage and operating cost advantage, dislike emission-reduction technologies with general partial fume two and compare and also have tangible investment advantage and operating cost advantage, accepted easilier by domestic iron and steel enterprises.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention the variation of the foregoing description, modification etc.
Claims (10)
1. low energy consumption sintering dioxins in flue gas emission-reducing system, according to the dioxin concentration of region height all wind chambers of sintering pallet bottom are divided into area with high mercury wind chamber and low concentration region wind chamber, it is characterized in that: comprise that main smoke discharging pipe, main deduster, blower fan, dioxin remove system, airtight gas hood, high dioxin compounds flue gas flue, circulated air pipeline, dioxin compounds and remove flue, bypass flue, deduster, blower fan, desulfurizing tower and chimney;
Described low concentration region wind chamber connects main smoke discharging pipe, arrives chimney by main deduster, blower fan, desulfurizing tower successively, is discharged in the atmosphere;
Described airtight gas hood cover cap is above sintering pallet, one end of described high dioxin compounds flue gas flue connects the area with high mercury wind chamber, the other end of high dioxin compounds flue gas flue is divided into two-way, wherein one the tunnel connects the main deduster that dioxin compounds removes flue and main exhaust duct successively, and another road connects circulated air pipeline and airtight gas hood successively; Described dioxin compounds removes flue and is provided with dioxin and removes system, and described circulated air pipeline is provided with deduster and blower fan;
Described main smoke discharging pipe connects high dioxin compounds flue gas flue by the bypass flue.
2. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: described dioxin compounds removes the two ends that dioxin on the flue removes system and is respectively equipped with valve and valve.
3. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: described high dioxin compounds flue gas flue is provided with valve.
4. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: described bypass flue is provided with valve.
5. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: connect the valve that the central cooler hot blast is sneaked in control before the deduster on the described circulated air pipeline.
6. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: described area with high mercury wind chamber is arranged on from the sintering machine head end of sintering pallet to 55% to 95% length areas tail.
7. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: described deduster is at least a in cyclone dust collectors or the iris type deduster.
8. low energy consumption sintering dioxins in flue gas emission-reducing system as claimed in claim 1 is characterized in that: it is at least a in activated carbon adsorption unit, catalytic decomposition device and the selective catalytic reduction denitration device that described dioxin removes system.
9. a low energy consumption sintering dioxins in flue gas discharge-reducing method adopts as any described low energy consumption sintering dioxins in flue gas emission-reducing system in the claim 1 to 8, it is characterized in that: may further comprise the steps:
A, collect the flue gas of area with high mercury, therefrom extract the part of smoke dedusting after, the dioxin in another part flue gas is removed simultaneously as combustion-supporting gas in the top that is circulated back to sintering machine;
B, collect the flue gas of low concentration region, mixes dedusting afterwards with the flue gas of removing or adsorbed dioxin;
C, with the common desulfurization of above-mentioned two-part flue gas;
D, the gas after the desulfurization is discharged into atmosphere.
10. low energy consumption sintering dioxins in flue gas discharge-reducing method as claimed in claim 9, it is characterized in that: the exhaust gas volumn of cyclic part is that 70%～80% of high dioxin exhaust gas volumn is 35%～40% of a full exhaust gas volumn in the described steps A, and the flue gas of another part is that 20%～30% of high dioxin exhaust gas volumn is 10%～15% of a full exhaust gas volumn.
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| CN102901365A (en) * | 2011-07-27 | 2013-01-30 | 宝山钢铁股份有限公司 | Low-energy-consumption method for reducing emission of dioxin in sintering waste gas |
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| CN102901365A (en) * | 2011-07-27 | 2013-01-30 | 宝山钢铁股份有限公司 | Low-energy-consumption method for reducing emission of dioxin in sintering waste gas |
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| CN104061794A (en) * | 2014-05-29 | 2014-09-24 | 宁波钢铁有限公司 | Sintering air bellow exhausting gas waste heat circulating utilization device and method |
| CN107677720A (en) * | 2017-10-10 | 2018-02-09 | 浙江富春江环保科技研究有限公司 | A kind of dioxin on-line detecting system rack |
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| CN109126359A (en) * | 2018-08-28 | 2019-01-04 | 钢研晟华科技股份有限公司 | A kind of device and method reducing Ore Sintering Process VOCs discharge |
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| CN110333326A (en) * | 2019-08-07 | 2019-10-15 | 马鞍山钢铁股份有限公司 | A kind of sintering circulating flue gas simulation system and experimental method |
| CN110333326B (en) * | 2019-08-07 | 2024-04-16 | 马鞍山钢铁股份有限公司 | Sintering circulation flue gas simulation system and experimental method |
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