CN101569819B - Flue gas desulfurization process for comprehensively utilizing sintering flue gas - Google Patents
Flue gas desulfurization process for comprehensively utilizing sintering flue gas Download PDFInfo
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- CN101569819B CN101569819B CN2009100435708A CN200910043570A CN101569819B CN 101569819 B CN101569819 B CN 101569819B CN 2009100435708 A CN2009100435708 A CN 2009100435708A CN 200910043570 A CN200910043570 A CN 200910043570A CN 101569819 B CN101569819 B CN 101569819B
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a flue gas desulfurization process for comprehensively utilizing sintering flue gas. In the flue gas desulfurization process, a desulfurizing tower for absorbing sulfur dioxideand a regeneration tower for reclaiming desulphurization rich solution discharged by the desulfurizing tower are arranged; the sintering flue gas discharged by a sintering machine is conveyed to theregeneration tower, the sintering flue gas taken as a heat source indirectly heats the desulphurization rich solution in the regeneration tower to decompose the sulfur dioxide in the desulphurizationrich solution, and an absorption liquid obtained after the desulphurization rich solution is regenerated is conveyed to the desulfurizing tower; and the discharged sintering flue gas in the regeneration tower is subjected to washing, dedusting and temperature reduction and then is sent into the desulfurizing tower, the sintering flue gas is subjected to cyclical absorption and desulphurization by the absorption liquid to obtain purified gas, and the purified gas is exhausted into atmosphere. The flue gas desulfurization process fully makes use of abandon resources, has less energy consumption,and low cost and can effectively reduce the occurrence of the phenomenon of flue gas condensation.
Description
Technical field
The present invention relates to a kind of comprehensive utilization process of flue gas, relate in particular to the comprehensive utilization process of sinter fume in a kind of sintering process.
Background technology
Usually contain a large amount of sulfur dioxide in the stack gases that the burning of fuel (solid, gas) and iron ore sintering process produce, if sulfur in smoke is not handled, directly be discharged into it in atmosphere, then form acid rain easily, and then jeopardize vegeto-animal growth and existent environment of people.
Flue gas desulfurization technique is the important means of sulfur dioxide pollution in the control atmosphere, and has worldwide carried out commercialization ground and used.Along with deepening continuously of science and technology development and research, existing hundreds of at present flue gas desulfurization techniques come out, and it mainly comprises limestone-gypsum method, rotary spraying and drying method, electron beam irradiation method, impulse electric corona plasma method etc.And in numerous fume desulphurization methods, the absorption liquid absorption cycle is a kind of comprehensive utilization effect fume desulphurization method preferably.This method is handled in the desulfurization of sinter fume and is used, its technological process as shown in Figure 1, raw materials for sintering on the sintering machine through the sintering deposit of high-temperature roasting output after the central cooler cooling, deliver to blast furnace through whole grain by belt feeder again; The sinter fume of sintering machine output enters desulfurizing tower after washing, cooling, dedusting in water scrubber, be purified flue gas absorb desulfurization through absorption liquid circulation in desulfurizing tower after, again by smoke stack emission in atmosphere.In desulfurizing tower, the mechanism that the absorption liquid circulation absorbs desulfurization is based on following net reaction:
SO
2+H
2O+R←→RH
++HSO
3 -
R represents the sulfur dioxide absorbent that contains in the absorption liquid (this absorbent is based on organic cation, inorganic anion in the following formula, add the aqueous solution that a small amount of activator, antioxidant and corrosion inhibiter are formed), its reaction belongs to reversible reaction, this reaction is carried out from left to right under the low temperature, and this reaction is carried out from right to left under the high temperature.Above-mentioned absorption liquid absorption cycle utilizes this desulphurization mechanism just, absorbs sulfur dioxide at low temperatures, and is under the high temperature that the sulfur dioxide in the absorbent is born again, thereby reaches the purpose that removes and reclaim sulfur dioxide in flue gas.
For realizing at high temperature the sulfur dioxide in the absorbent being regenerated, realize the recycling of (absorption liquid behind the absorption sulfur dioxide gas is called the desulfurization rich solution) of desulfurization rich solution simultaneously, in above-mentioned sulfur removal technology, generally also be provided with a regenerator (see figure 1), and regenerator is a heat exchanger in essence, promptly by giving the desulfurization rich solution that discharges in desulfurizing tower heating, after decompositing sulfur dioxide wherein, the desulfurization rich solution obtains the absorption liquid that regeneration becomes follow-up circulation desulfurization, and the defeated desulfurizing tower that is back to of the absorption liquid after will regenerating then carries out the desulfurization processing again.
In the prior art, the thermal source of above-mentioned regenerator is from the vapours in the steam pipe system, and the capital equipment blowing-type central cooler (hereinafter to be referred as " central cooler ") in the sintering process also can a certain amount of vapours of output by heat recovery.The basic functional principle of central cooler is: the sintering deposit that sintering machine unloads, after single roller fragmentation, enter the feed chute, by the feed chute continuously equably with sintering deposit cloth on the trolley grating plate of central cooler, drive unit drives the trolley body of central cooler and make uniform circular motion on horizontal rail; Meanwhile, air blast is sent cold air into annular passage, has on the annular passage and each trolley body airduct one to one, cold wind passes grate plate and enters the heat sinter bed of material under positive pressure, and carries out heat exchange with it, and hot blast is constantly discharged from charge level, or UTILIZATION OF VESIDUAL HEAT IN, or directly discharging.As seen, the part waste gas of central cooler cooling procedure output has the value of heat recovery.
Distribution situation according to the central cooler EGT, the mode of UTILIZATION OF VESIDUAL HEAT IN and the value of UTILIZATION OF VESIDUAL HEAT IN, generally the central cooler exhaust emission system can be divided into three districts or four districts from high temperature to low temperature, the dividing mode in three districts refers to that promptly the high-temperature region is (more than 350 ℃, refer in particular to 350 ℃～500 ℃), middle warm area (200 ℃～350 ℃) and low-temperature space are (below 200 ℃, refer in particular to 150 ℃～200 ℃), the dividing mode in four districts refers to that promptly the high-temperature region is (more than 380 ℃, refer in particular to 380 ℃～500 ℃), inferior high-temperature region (300 ℃～380 ℃), middle warm area (200 ℃～300 ℃) and low-temperature space (below 200 ℃, referring in particular to 150 ℃～200 ℃).The central cooler UTILIZATION OF VESIDUAL HEAT IN scheme that is divided into three districts has two kinds: a kind of is that high-temperature region waste gas send afterheat generating system, uses after the electric power of production is incorporated into the power networks, or uses after sending middle pressure steam bootstrap system, the steam of production to be incorporated into the power networks; Middle warm area waste gas send the low-pressure steam bootstrap system, uses after the steam of production is incorporated into the power networks; Low-temperature space waste gas directly discharges; Another kind is the cooling air that the waste gas of middle warm area is used as the high-temperature region sintering deposit, and the hot waste gas of warm area carries out the air blast cooling to the high-temperature region in being drawn by the high temperature circulation blower fan, in order to improve the EGT of high-temperature region UTILIZATION OF VESIDUAL HEAT IN; Send afterheat generating system with high-temperature region waste gas, use after the electric power of production is incorporated into the power networks; The low-temperature space hot waste gas is directly discharged because of the value that does not possess UTILIZATION OF VESIDUAL HEAT IN production steam.The central cooler UTILIZATION OF VESIDUAL HEAT IN scheme that is divided into four districts is: the cooling air that the waste gas of inferior high-temperature region is used as the high-temperature region sintering deposit, the hot waste gas of being drawn time high-temperature region by the high temperature circulation blower fan carries out the air blast cooling to the high-temperature region, in order to improve the EGT of high-temperature region UTILIZATION OF VESIDUAL HEAT IN; Send afterheat generating system with high-temperature region waste gas, use after the electric power of production is incorporated into the power networks; Middle warm area waste gas send the low-pressure steam bootstrap system, uses after the steam of production is incorporated into the power networks; Low-temperature space waste gas directly discharges.
Therefore, the waste heat recovery of existing central cooler mainly is that the hot waste gas of warm area, (inferior) high-temperature region in the central cooler is recycled, but the low-temperature space hot waste gas does not obtain recycling and directly has been discharged in the atmosphere, existence has also caused adverse effect to the waste of the resource and the energy to atmospheric environment.In addition, because it is higher to enter the temperature of sinter fume of water scrubber, the required cooling water inflow of water scrubber is bigger, and cool time is longer, and the waste that this also exists the resource and the energy has increased the cost and the burden of enterprise.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides a kind of and can make full use of waste gas resource, less energy consumption, the low sintering flue gas desulfurization technology that also can effectively reduce the comprehensive utilization sinter fume of smoke condensation phenomenon generation of cost.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of sintering flue gas desulfurization technology that fully utilizes sinter fume, be provided with in the described flue gas desulfurization technique and be used to absorb the desulfurizing tower of sulfur dioxide and be used to reclaim the regenerator that desulfurizing tower discharges the desulfurization rich solution, it is characterized in that: the sinter fume of sintering machine discharging is delivered in the described regenerator, as thermal source the desulfurization rich solution in the regenerator is carried out indirect with this sinter fume, decomposite the sulfur dioxide in the desulfurization rich solution, the defeated desulfurizing tower that is back to of the absorption liquid that obtains after the regeneration of desulfurization rich solution; The sinter fume of discharging in the described regenerator through being admitted to desulfurizing tower after washing, dedusting, the cooling, is purified flue gas again after the absorption liquid circulation absorbs desulfurization in desulfurizing tower, be discharged in the atmosphere again.
The flue gas desulfurization technique of employing ionic liquid absorption cycle is 40 ℃～60 ℃ to the temperature requirement of sinter fume, and the initial temperature of sinter fume when discharging from sintering machine is generally all at 130 ℃～180 ℃, therefore absorb the requirement of doctor treatment in order to satisfy the ionic liquid circulation to the sinter fume temperature, need earlier the sinter fume of high temperature to be washed, lowered the temperature, and the initial temperature of sinter fume is high more, and is big more to the water resources consumption of water scrubber.Based on this, on the one hand in order to reduce the consumption of cooling water in the water scrubber as far as possible, simultaneously in order to utilize the heat energy of sinter fume more fully, the present invention proposes and make sinter fume in the technique scheme that in regenerator, participates in heat exchange before the desulfurization earlier, to wash again through the sinter fume after the heat exchange, desulfurization, in the hope of reaching above-mentioned dual purpose and effect.
In technique scheme, if the discharge capacity of sinter fume is bigger, the temperature of sinter fume is higher, the heat that sinter fume provided is satisfying the heating of regenerator, is decomposing and can also have more than neededly outward, can shunt from the sinter fume of sintering machine discharging then that a part is directly washed, dedusting, cooling (for example can directly shunt a part is delivered in the water scrubber) and follow-up desulfurization (as shown in Figure 2).The big I of the gas flow of shunting is determined according to the degree more than needed of required amount of heat of regenerator described in the concrete practice and sinter fume voluntarily by those skilled in the art.
In above-mentioned technical scheme, if the discharge capacity of sinter fume is less, and the temperature of sinter fume is relatively low, thereby can not satisfy regenerator to the requiring of heat fully the time, then can from the hot waste gas of the supporting central cooler output of sintering process, introduce a part of gas and enter into regenerator, the hot waste gas of introducing (the low temperature hot waste gas of preferred central cooler low-temperature space discharging) and described sinter fume carry out indirect (promptly setting up separate pipeline respectively as the gas channel of hot waste gas and sinter fume in regenerator) to the desulfurization rich solution in the regenerator simultaneously as thermal source respectively, with the required heat breach (as shown in Figure 3) of compensation regeneration tower.The central cooler supporting with described sintering machine generally also is provided with waste-heat recovery device (for example boiler), the vapours of this waste-heat recovery device output (more than 300 ℃) is incorporated steam pipe system into, the heat breach of regenerator also can be supplied via the vapours that steam pipe system is carried, the vapours of introducing is carried out indirect as thermal source to the desulfurization rich solution in the regenerator jointly with described sinter fume behind pressure and temperature reducing, decomposite the sulfur dioxide (as shown in Figure 4) in the desulfurization rich solution.The big I of sinter fume amount, hot waste gas amount or the vapours amount of introducing is determined according to concrete practice voluntarily by those skilled in the art.
In the technique scheme, the hot waste gas of the central cooler output that described sintering machine is supporting is meant that generally temperature is at 110 ℃～500 ℃ hot waste gas; The temperature of the low temperature hot waste gas of described central cooler low-temperature space discharging is generally at 110 ℃～200 ℃, preferred 150 ℃～200 ℃ low temperature hot waste gas.The proposition of this heatrejection description prioritization scheme just is being based on that the temperature of desulfurization rich solution in regenerative process the characteristics about 110 ℃ of need being controlled at put forward.Because the heatrejection of the middle warm area of central cooler, inferior high-temperature region and/or high-temperature region discharging is higher, general all in 200 ℃～500 ℃ scope, therefore the hot waste gas of warm area, inferior high-temperature region and/or high-temperature region discharging has UTILIZATION OF VESIDUAL HEAT IN value in, generally be delivered to steam waste heat and utilize system to be used to produce low-pressure steam or generating, the hot waste gas of high-temperature region output even can directly deliver to afterheat generating system.And in existing and flue gas desulfurization technique that sintering process matches, general also is to incorporate the vapours of waste-heat recovery device output into steam pipe system, vapours in the steam pipe system is delivered to the regenerator in the sulfur removal technology behind pressure and temperature reducing, be used for the decomposition of desulfurization rich solution; Yet, decompose the required temperature of desulfurization rich solution in the regenerator about 110 ℃, utilize vapours that the desulfurization rich solution is decomposed, also there is the waste on the energy.The low temperature heatrejection of considering central cooler low-temperature space output is generally at 150 ℃～200 ℃, and this low temperature hot waste gas generally is directly discharging and being recycled, therefore the present invention preferably is delivered to the low temperature hot waste gas of central cooler low-temperature space discharging the regenerator of sulfur removal technology, with this as the supplemental heat source under the sinter fume shortage of heat situation, so just made full use of the hot waste gas resource of central cooler low-temperature space output, and warm area in the central cooler, the hot waste gas of dischargings such as high-temperature region still can be used for reclaiming production vapours or generating, has improved the comprehensive utilization ratio of central cooler institute output hot waste gas greatly.
In the technique scheme, after the low temperature hot waste gas of central cooler low-temperature space discharging carries out indirect, decomposes the desulfurization rich solution in regenerator, also remain on about 100 ℃ from the heatrejection of regenerator discharging, and belong to dry heat waste gas, and sinter fume is generally 40 ℃～60 ℃ through the temperature that the absorption liquid circulation absorbs the purification flue gas that obtains after the desulfurization, and be the hypersaturated state wet flue gas, to produce a large amount of water droplets when directly discharging, form " raining " phenomenon, be unfavorable for discharging the lifting and the diffusion of flue gas, the atmospheric environment around the chimney is produced secondary pollution.Therefore conduct is to further improvement in the technical proposal, also the dry heat waste gas of regenerator discharging can be absorbed the hypersaturated state wet flue gas that obtains after the desulfurization with the absorption liquid circulation earlier directly mixes, together through smoke stack emission to atmosphere, can reduce the dew point of discharging flue gas after the desulfurization like this, improve the discharging flue-gas temperature, eliminate the chimney phenomenon of " raining ", improve the atmospheric environment of the peripheral region of chimney.
Compared with prior art, the invention has the advantages that: at first reduced in the sulfur removal technology the consumption of the required cooling water of water scrubber, saved the energy and resource; Simultaneously, also reduced in the sulfur removal technology consumption (can be reduced to below the 40t/h by 76～96t/h, consumption reduces 50%) to vapours.Further improvement as technical solution of the present invention, the present invention has also made full use of the low temperature hot waste gas of central cooler discharging, as one of thermal source of regenerator, not only guarantee the heat energy demand of regenerator in the sulfur removal technology with this, also made full use of the low temperature hot waste gas resource of central cooler discharging; And the low temperature hot waste gas of directly delivering to regenerator heating can be further after through the regenerator heating mixes with the hypersaturated state wet flue gas that discharges after the desulfurization; improve the exhaust temperature of flue gas; reduce the discharging flue gas dew point; eliminate the chimney phenomenon of " raining "; help discharging the dilution diffusion of flue gas, the protection atmosphere quality.
Description of drawings
Fig. 1 is the process chart of existing flue gas desulfurization technique;
Fig. 2 sends into the desulfurization process figure of the present invention of regenerator and water scrubber simultaneously for sinter fume;
Fig. 3 utilizes low temperature hot waste gas and the sinter fume desulfurization process figure of the present invention as the regenerator thermal source;
Fig. 4 utilizes vapours and the sinter fume desulfurization process figure of the present invention as the regenerator thermal source;
Fig. 5 is the desulfurization process figure of the embodiment of the invention.
The specific embodiment
Embodiment:
Flue gas desulfurization technique of the present invention as shown in Figure 5, this technology is used for the flue gas desulfurization of agglomeration for iron mine technology.(effectively sintering area is 360m to sintering machine
2) (cooling air quantity is about 2300000Nm to the sintering deposit that becomes of roasting through central cooler
3/ h) after the cooling, deliver to blast furnace through whole grain back by belt feeder again.The sinter fume (130 ℃～180 ℃) that the sintering machine roasting process is discharged is sent into regenerator earlier after the booster fan pressurization.In regenerator, the desulfurization rich solution is sintered the flue gas indirect, parses purity and reaches 99.5% sulfur dioxide, and the sulfur dioxide that decomposites is drawn by the regenerator cat head in company with a large amount of water vapours, and sulfur dioxide is used for relieving haperacidity (for example preparing 98% the concentrated sulfuric acid).The desulfurization rich solution is converted into absorption liquid after regenerator regeneration, defeatedly be back to desulfurizing tower and participate in desulfurization again.
In the above-mentioned sulfur removal technology process, the sinter fume (100 ℃～110 ℃) of discharging from regenerator is delivered to water scrubber and (also water scrubber can be set, and a washing section is set in desulfurizing tower, sinter fume is then directly sent into washing section), after the washing of washings, cooling, dedusting, the temperature of sinter fume is reduced to 40 ℃～60 ℃ in water scrubber.Sinter fume (40 ℃～60 ℃) after washing is sent into desulfurizing tower again, adopt circulating absorption solution that sinter fume is carried out desulfurization, detailed process is: sinter fume enters desulfurizing tower from the air inlet of desulfurizing tower bottom, in desulfurizing tower with the absorption liquid counter current contacting that enters from desulfurizing tower top, sulfur dioxide gas in the sinter fume is absorbed by liquid absorption concurrent biochemical reaction, purification flue gas after the desulfurization (hypersaturated state wet flue gas) mixes with the low temperature hot waste gas of introducing from supporting central cooler low-temperature space (150 ℃～200 ℃), mixed gas is through the smoke stack emission at desulfurizing tower top, can reduce the dew point of hypersaturated state wet flue gas after the desulfurization like this, improve the discharging flue-gas temperature, reduce " rain " generation of phenomenon of chimney, improve the atmosphere quality of the peripheral region of fume emission.
In concrete practice, if the discharge capacity of sinter fume is bigger, the temperature of sinter fume is higher, then can be from the sinter fume of sintering machine discharging a shunting part directly enter water scrubber and wash and follow-up desulfurization (production technology as shown in Figure 2); If the discharge capacity of sinter fume is less, and the temperature of sinter fume is lower, thereby can not satisfy regenerator to the requiring of heat fully the time, then can from the hot waste gas (150 ℃～200 ℃ low temperature hot waste gas of preferred low-temperature space discharging) of the supporting central cooler output of sintering process, introduce a part of gas and enter into regenerator, with the heat breach (production technology as shown in Figure 3) of compensation regeneration tower.When the low temperature hot waste gas of central cooler low-temperature space discharging is introduced regenerator, after the heating of this low temperature hot waste gas is finished and is discharged regenerator, its temperature also remains on about 100 ℃, and belong to dry heat waste gas, can with this low temperature hot waste gas again with desulfurization after the hypersaturated state wet flue gas directly mix after, be discharged in the atmosphere.
The flue gas desulfurization technique of present embodiment is owing to made full use of the heat energy of sinter fume, therefore can significantly reduce the consumption of the water yield in the water scrubber, according to measuring and calculating, the water consumption of recirculated water can be reduced to by original 8000t/h below the 6000t/h, water content consumption reduces 30%, and the consumption of low-pressure saturated steam also significantly reduces.
Claims (8)
1. sintering flue gas desulfurization technology that fully utilizes sinter fume, be provided with in the described sintering flue gas desulfurization technology and be used to absorb the desulfurizing tower of sulfur dioxide and be used to reclaim the regenerator that desulfurizing tower discharges the desulfurization rich solution, it is characterized in that: the sinter fume of sintering machine discharging is delivered in the described regenerator, as thermal source the desulfurization rich solution in the regenerator is carried out indirect with this sinter fume, decomposite the sulfur dioxide in the desulfurization rich solution, the defeated desulfurizing tower that is back to of the absorption liquid that obtains after the regeneration of desulfurization rich solution; The sinter fume of discharging in the described regenerator through being admitted to desulfurizing tower after washing, dedusting, the cooling, is purified flue gas again after the absorption liquid circulation absorbs desulfurization in desulfurizing tower, be discharged in the atmosphere again.
2. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 1 is characterized in that: the sinter fume of described sintering machine discharging shunts also that a part is directly washed, dedusting, cooling and follow-up desulfurization.
3. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 1, it is characterized in that: from the hot waste gas of the supporting central cooler output of described sintering machine, introduce a part of gas and enter into described regenerator, hot waste gas and the described sinter fume introduced carry out indirect to the desulfurization rich solution in the regenerator simultaneously as thermal source respectively, decomposite the sulfur dioxide in the desulfurization rich solution.
4. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 3 is characterized in that: the hot waste gas of the central cooler output that described sintering machine is supporting is meant that temperature is at 110 ℃～500 ℃ hot waste gas.
5. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 4, it is characterized in that: described hot waste gas is the low temperature hot waste gas of central cooler low-temperature space discharging, after described low temperature hot waste gas carries out indirect, decomposes the desulfurization rich solution in regenerator, again the purification flue gas that obtains after low temperature hot waste gas and the desulfurization is mixed, again with mist through smoke stack emission to atmosphere; Described low temperature hot waste gas is meant that temperature is at 110 ℃～200 ℃ hot waste gas.
6. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 5 is characterized in that: described low temperature hot waste gas is meant that temperature is at 150 ℃～200 ℃ hot waste gas.
7. the sintering flue gas desulfurization technology of comprehensive utilization sinter fume according to claim 1, it is characterized in that: from existing steam pipe system, introduce a part of vapours and enter into regenerator, vapours and the described sinter fume introduced heat the desulfurization rich solution in the regenerator as thermal source jointly, decomposite the sulfur dioxide in the desulfurization rich solution.
8. according to the sintering flue gas desulfurization technology of each described comprehensive utilization sinter fume in the claim 1～7, it is characterized in that: the initial temperature of described sinter fume is 130 ℃～180 ℃.
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| CN101837236B (en) * | 2009-12-29 | 2013-02-27 | 中国恩菲工程技术有限公司 | Flue gas desulfurization method |
| CN101963459A (en) * | 2010-09-02 | 2011-02-02 | 宝钢工程技术集团有限公司 | Corrosion decelerating system for wet desulphurization chimney of sintering machine |
| CN104190389B (en) * | 2014-08-27 | 2017-04-12 | 中冶长天国际工程有限责任公司 | Thermal regeneration method and device of activated carbon |
| CN106931634A (en) * | 2017-03-28 | 2017-07-07 | 金川集团股份有限公司 | A kind of device that warm-up cycle is risen for flue gas conversion |
| CN109126461B (en) * | 2018-10-31 | 2021-09-21 | 湘潭大学 | Regeneration method of flue gas desulfurization absorbent |
| CN112393609B (en) * | 2020-04-27 | 2022-06-24 | 中冶长天国际工程有限责任公司 | Reinforced sintering equipment, charge level cooling device and control method thereof |
| CN111678350A (en) * | 2020-06-03 | 2020-09-18 | 首钢集团有限公司 | Sintering flue gas cooling sinter system |
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| CN101301560A (en) * | 2007-05-09 | 2008-11-12 | 成都华西化工研究所 | Comprehensive utilization method of sintered pollutant |
| CN101396635A (en) * | 2007-09-27 | 2009-04-01 | 山东省冶金设计院有限责任公司 | Semi-gas desulfurization technological process of flue gas of sinter machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101301560A (en) * | 2007-05-09 | 2008-11-12 | 成都华西化工研究所 | Comprehensive utilization method of sintered pollutant |
| CN101396635A (en) * | 2007-09-27 | 2009-04-01 | 山东省冶金设计院有限责任公司 | Semi-gas desulfurization technological process of flue gas of sinter machine |
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