CN104587826A - Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof - Google Patents
Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof Download PDFInfo
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- CN104587826A CN104587826A CN201510066668.0A CN201510066668A CN104587826A CN 104587826 A CN104587826 A CN 104587826A CN 201510066668 A CN201510066668 A CN 201510066668A CN 104587826 A CN104587826 A CN 104587826A
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- pulping
- desulphurization system
- slurries
- rotary kiln
- dry process
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- 238000001035 drying Methods 0.000 title claims abstract description 27
- 239000004568 cement Substances 0.000 title claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000003546 flue gas Substances 0.000 title claims abstract description 16
- 238000006477 desulfuration reaction Methods 0.000 title abstract description 19
- 230000023556 desulfurization Effects 0.000 title abstract description 14
- 238000000034 method Methods 0.000 title abstract description 13
- 230000008569 process Effects 0.000 title abstract description 6
- 238000004537 pulping Methods 0.000 claims abstract description 44
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 31
- 230000003750 conditioning effect Effects 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 15
- 238000010790 dilution Methods 0.000 claims description 14
- 239000012895 dilution Substances 0.000 claims description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 229910052717 sulfur Inorganic materials 0.000 claims description 13
- 239000011593 sulfur Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 230000003009 desulfurizing effect Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- KIZFHUJKFSNWKO-UHFFFAOYSA-M calcium monohydroxide Chemical compound [Ca]O KIZFHUJKFSNWKO-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003916 acid precipitation Methods 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 208000030303 breathing problems Diseases 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012272 crop production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a novel dry-process cement kiln tail flue gas desulfurization system. A material taking device (1) is connected with an outlet of a decomposing furnace (6); the material taking device (1) is connected with a storage device (3); the storage device (3) is connected with a pulping device (2); and the pulping device (2) is respectively connected with a humidifier tower (7) and a raw mill (8) by virtue of a conveying device (4) and an injection device (5). The invention also discloses a desulfurization process for the system. With the adoption of the technical scheme, the desulfurization efficiency is high, and the desulfurization efficiency is more than 50 percent; the operation is convenient, and the degree of automation is high; the construction period is short, and normal production of the production line is not influenced by most of constructions of the desulfurization system; and moreover, an extra desulfurizing agent does not need to be purchased, and the investment cost and the operating cost are low.
Description
Technical field
The invention belongs to the technical field of cement manufacture plant, relate to the green technology in manufacture of cement, more particularly, the present invention relates to a kind of new dry process rotary kiln kiln exit gas desulphurization system.In addition, the invention still further relates to the sulfur removal technology of this system.
Background technology
At present, China SO
2discharge capacity is at 2,000 ten thousand more than t/, and wherein cement industry accounts for 3% ~ 4%.As everyone knows, SO
2be the main cause that acid rain is formed, be also the chief component of PM2.5, PM2.5 can form haze simultaneously, causes breathing problem; Acid rain serious environment pollution, trees yellow can be caused, the even death that comes off, crop production reduction, the hydrobiological ecological balance of construction material burn into etc., acid rain region expands the broad area within the Changjiang river to from 20 regions, century 70 southwest, area has reached more than 30% of area, the economic loss that the annual whole nation causes because of acid rain and sulfur dioxide pollution exceeds 100 billion, SO
2discharge become restriction national economy sustainable development subject matter.
The Chinese government attaches great importance to the pollution problem of SO2, has worked out many relevant control policies, regulation and standard, to manufacturing enterprise SO
2discharge limits, " cement industry atmosphere pollutants emission standards " (GB4915-2013) the middle regulation wherein issued for cement production enterprise on December 27th, 2013, cement kiln SO2 concentration of emission will control within 200mg/Nm3, and key area controls at 100mg/Nm
3within.
More than 1500 new type nonaqueous cement production line in the whole nation limits by region, because of sulfur content difference in former, fuel, and SO
2concentration of emission is also different, and most of production line is former, the less or not sulfur-bearing of sulfur content in fuel, SO in flue gas
2concentration of emission is lower than 200mg/Nm
3(10%O
2), even can't detect SO
2discharge, but some production lines are former, sulfur content is higher in fuel, and particularly in lime stone, sulfur content is higher, causes SO
2concentration of emission is higher, have even up to 1000mg/Nm
3(10%O
2) more than.
Reduce discharging policy to respond national environmental protection further, Anhui Conch Design & Research Institute of Building Materials has carried out the development & application research of new dry process rotary kiln kiln exit gas desulfur technology.
Summary of the invention
The invention provides a kind of new dry process rotary kiln kiln exit gas desulphurization system, its objective is and reduce SO in kiln exit gas
2discharge.
To achieve these goals, the technical scheme that the present invention takes is:
New dry process rotary kiln kiln exit gas desulphurization system of the present invention, described dry-process cement rotary kiln comprises dore furnace, conditioning Tower and raw mill; Described desulphurization system arranges take out device, storage device, pulping device, conveying device and injection apparatus; Described take out device is connected with the outlet of dore furnace; Described take out device is connected with storage device; Described storage device is connected with pulping device; Described pulping device is connected with conditioning Tower and raw mill respectively by conveying device and injection apparatus.
Described take out device arranges dilution cooler, dilution air blast and cyclone separator.
Described pulping device arranges pulping tank, described pulping tank is arranged agitator and densimeter.
Described storage device arranges holding vessel, described holding vessel is arranged agitator and densimeter.
Described conveying device arranges delivery pump group and circulating pump group.
Described injection apparatus arranges atomizing lance.
In order to realize the goal of the invention identical with technique scheme, present invention also offers the sulfur removal technology of above-described new dry process rotary kiln kiln exit gas desulphurization system, its technical scheme is:
Extract decomposition furnace outlet and contain active CaO gas;
Containing active CaO gas by the cooling of dilution cooler, will be gathered dust by cyclone separator, material collection got off;
The material collected is sent into the holding vessel of storage device, add water, stir in advance, formed and store slurries;
Slurries are sent into the pulping tank of pulping device, then add water, stir, make the CaOH that mass concentration is 20% ~ 30%
2slurries;
By the delivery pump group of conveying device, be the CaOH of 20% ~ 30% by concentration
2slurries deliver to injection apparatus;
By the atomizing lance of injection apparatus, be the CaOH of 20% ~ 30% by concentration respectively
2slurries are ejected into the outlet of conditioning Tower and raw mill, the SO in reduction flue gas
2.
When described pulping tank slurries do not reach setting concentration, carry a part of slurries by the circulating pump group in conveying device from holding vessel to pulping tank.
More specifically, the concentration of slurry that described pulping tank is made is 26.5%.
The present invention adopts technique scheme, and main innovate point is: desulfuration efficiency is high, desulfuration efficiency > 50%; Easy to operate, control DCS system in accessible, automaticity is high; Construction period is short, and it is short to stop the kiln time, and desulphurization system is run in parallel with production line, and the construction of desulphurization system major part does not affect production line and normally produces; Without the need to additionally buying desulfurizing agent, as long as it is self-sufficient to rely on clinker production line to realize desulfurizing agent; Cost of investment and operating cost low: export by Cyclone outlet and preheater C1 cylinder topmost dexterously and gather pipeline and be connected, the negative pressure utilizing the outlet of C1 cylinder to gather pipeline realizes material collection, saves a dust collecting exhaust blower.
Accompanying drawing explanation
Brief description is denoted as to this description each width accompanying drawing content and figure acceptance of the bid below:
Fig. 1 is cement producing line flue gas desulfurization process block diagram of the present invention;
Fig. 2 is cement producing line flue gas desulphurization system structural representation of the present invention;
Fig. 3 is the schematic diagram that in Fig. 2, new dry process rotary kiln structure is amplified;
Fig. 4 is the schematic diagram that in Fig. 2, storage device structure is amplified;
Fig. 5 is the schematic diagram that in Fig. 2, pulping device structure is amplified;
Fig. 6 is the schematic diagram that in Fig. 2, PH boiler and conditioning Tower structure are amplified;
The schematic diagram that Fig. 7 is raw mill in Fig. 2, surge bunker and bellows cottrells structure of converging are amplified;
Fig. 8 is the screenshot capture of flue gas desulfurization central control system display interface of the present invention.
Be labeled as in figure:
1, take out device, 2, pulping device, 3, storage device, 4, conveying device, 5, injection apparatus, 6, dore furnace, 7, conditioning Tower, 8, raw mill, 9, rotary kiln, 10, dilution cooler, 11, dilution air blast, 12, cyclone separator, 13, agitator, 14, PH boiler, 15, water meter, 16, level-sensing device, 17, safety valve, 18, high-temperature blower, 19, surge bunker, 20, bellows are converged, 21, cottrell, 22, blowoff valve.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Structure of the present invention expressed by Fig. 2, be a kind of new dry process rotary kiln kiln exit gas desulphurization system, described dry-process cement rotary kiln comprises dore furnace 6, conditioning Tower 7 and raw mill 8.
Described new dry process rotary kiln is rotary kiln 9.New dry process rotary kiln system of the present invention also comprises PH boiler 14, high-temperature blower 18, surge bunker 19, remittance bellows 20, cottrell 21.
The invention belongs to cement clinker production line and reduce SO
2the desulfur technology of discharge.This technology is the process characteristic in conjunction with cement industry new dry process kiln system, by extracting desulfurization raw material in production line appropriate location, being mixed with desulfurizing agent, and by independent transport systems and spraying system, desulfurizing agent being sprayed into flue gas, reduces SO to reach
2the object of concentration of emission.
In order to solve prior art Problems existing and overcome its defect, realize reducing SO in kiln exit gas
2the goal of the invention of discharge, the technical scheme that the present invention takes is:
As shown in Figures 2 to 6, new dry process rotary kiln kiln exit gas desulphurization system of the present invention, described desulphurization system arranges take out device 1, storage device 2, pulping device 3, conveying device 4 and injection apparatus 5; Described take out device 1 is connected with the outlet of dore furnace 6; Described take out device 1 is connected with storage device 3; Described storage device 3 is connected with pulping device 2; Described pulping device 2 is connected with conditioning Tower 7 and raw mill 8 respectively by conveying device 4 and injection apparatus 5.
Technique scheme of the present invention, based on prior art, from energy-conserving and environment-protective, green angle of producing, make full use of the process characteristic of cement firing system, desulfurization raw material are extracted, preparation desulfurizing agent at dore furnace, and by desulfurization storage device, conveying device and injection apparatus, reducing agent is sprayed in kiln exit gas, reduce SO to reach
2the object of discharge.
Flue gas desulfurization technique mainly extracts the high-temperature gas containing high activity CaO from decomposition furnace outlet, by cooling, gathers dust, material collection is got off, and pass in water, the Ca (OH) of preparation 20% ~ 30%
2slurries, and being carried by delivery pump group, are ejected into conditioning Tower 7 by desulfurization slurry and raw mill 8 exports or entrance, the SO in reduction flue gas
2.
The main chemical reactions equation that technique scheme of the present invention relates to is as follows:
1, Ca (OH)
2generation (at holding vessel and pulping tank):
CaO+H
2O→Ca(OH)
2
2, SO
2by drop absorption:
SO
2(g)+H
2O→H
2SO
3
3, absorbent and SO
2reaction (outlet at conditioning Tower and raw mill):
Ca(OH)
2+H
2SO
3→CaSO
3+H
2O
4, CaSO in drop
3supersaturation:
CaSO
3→CaSO
3(g)
5, the oxygen be dissolved in drop is oxidized generation calcium sulfate:
As shown in Figures 2 and 3:
Described take out device 1 arranges dilution cooler 10, dilution air blast 11 and cyclone separator 12.
The feature that take out device mainly utilizes existing production line to go out dore furnace material to contain a large amount of active CaO, is extracted containing material gas in the outlet of dore furnace 6, is then cooled by dilution cooler 10, cyclone separator 12 gathers dust, material collection got off.Dilution air blast 11 provides power for diluting cooler 10.
As shown in Figure 2 and Figure 4:
Described storage device 3 arranges holding vessel, described holding vessel is arranged agitator 13 and densimeter.Described holding vessel is also arranged level-sensing device 16, water meter 15 and safety valve 17.
As shown in Figure 2 and Figure 5:
Described pulping device 3 arranges pulping tank, described pulping tank is arranged agitator 13 and densimeter.
Described pulping tank is also arranged level-sensing device 16, water meter 15 and safety valve 17.
Above-mentioned storage and pulping system, mainly send the material collected into holding vessel and stir in advance, and store; Holding vessel and pulping tank all arrange agitator 13 and densimeter.
Described conveying device 4 arranges delivery pump group and circulating pump group.Conveying device 4 is made up of delivery pump group and circulating pump group, mainly carries slurries to injection apparatus 5.
On the transfer pipeline of slurries, blowoff valve 22 is set.
As shown in Fig. 2, Fig. 6 and Fig. 7: as described in injection apparatus 5 atomizing lance is set.
Injection apparatus 5 is made up of some groups of spray guns, and spray gun has the characteristics such as wear-resisting, corrosion-resistant, and jet blower diameter and layout angle etc. are closely related with production technology.
As Fig. 1 and shown in composition graphs 2, the present invention is the sulfur removal technology of new dry process rotary kiln kiln exit gas desulphurization system, and its technical scheme is as follows:
Extract decomposition furnace outlet and contain active CaO gas;
To be cooled by dilution cooler 10 containing active CaO gas, and be gathered dust by cyclone separator 12, material collection is got off;
The material collected is sent into the holding vessel of storage device 3, add water, stir in advance, formed and store slurries;
Slurries are sent into the pulping tank of pulping device 2, then add water, stir, make the CaOH that mass concentration is 20% ~ 30%
2slurries;
By the delivery pump group of conveying device 4, be the CaOH of 20% ~ 30% by concentration
2slurries deliver to injection apparatus 5;
By the atomizing lance of injection apparatus 5, be the CaOH of 20% ~ 30% by concentration respectively
2slurries are ejected into outlet or the entrance of conditioning Tower 7 and raw mill 8, the SO in reduction flue gas
2.
The technical characterstic of native system collects the material of decomposition furnace outlet containing high activity CaO, and be formulated as the slurries of 20% ~ 30%, is delivered to conditioning Tower and raw mill, sprays into flue gas by atomizing lance, remove the SO in flue gas by pump group
2, achieve good desulfurized effect.
The present invention is the process characteristic utilizing new type nonaqueous cement production line, extract containing high activity CaO gas at decomposition furnace outlet, by dilution cooler, gas is cooled, and by cyclone separator, material collection is got off, directly pass into holding vessel, by mixing suitable quantity of water, at the slurries of agitator tank preparation 20% ~ 30% concentration, and by delivery pump group deliver to conditioning Tower and raw mill outlet or entrance, directly spray into flue gas by atomizing lance, reach reduce SO
2the object of concentration of emission, does not affect the normal production run of cement producing line.
As shown in Figure 1:
When described pulping tank slurries do not reach setting concentration, carry a part of slurries by the circulating pump group in conveying device 4 from holding vessel to pulping tank.
When pulping tank slurries do not reach setting concentration, holding vessel carries a part of slurries to pulping tank, and pulping tank is by the slurries of agitator preparation 20% ~ 30% concentration.
More specifically, the concentration of slurry that described pulping tank is made is 26.5%.
Fig. 8 is the screenshot capture of the central control system display interface of flue gas desulphurization system, denotes important technological parameters during system cloud gray model in figure.
The advantage of technique scheme is:
1, desulfuration efficiency is high: the present invention can realize desulfuration efficiency > 50%.Implement desulfur technology transformation by the 5000t/d gone into operation to reality, obtain the achievement of desulfuration efficiency > 50%;
2, easy to operate: control DCS system in accessible, automaticity is high;
3, the construction period is short: it is short to stop the kiln time, and desulphurization system is run in parallel with production line, and the construction of desulphurization system major part does not affect production line and normally produces;
4, without the need to additionally buying desulfurizing agent, the present invention relies on clinker production line, can realize desulfurizing agent self-sufficient;
5, cost of investment and operating cost low: dexterously Cyclone outlet is gathered pipeline with C1 cylinder and is connected, utilize C1 cylinder to export the negative pressure gathering pipeline and realize material collection, save a dust collecting exhaust blower.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (9)
1. new dry process rotary kiln kiln exit gas desulphurization system, described dry-process cement rotary kiln comprises dore furnace (6), conditioning Tower (7) and raw mill (8), it is characterized in that: described desulphurization system arranges take out device (1), storage device (2), pulping device (3), conveying device (4) and injection apparatus (5); Described take out device (1) is connected with the outlet of dore furnace (6); Described take out device (1) is connected with storage device (3); Described storage device (3) is connected with pulping device (2); Described pulping device (2) is connected with conditioning Tower (7) and raw mill (8) respectively by conveying device (4) and injection apparatus (5).
2. according to new dry process rotary kiln kiln exit gas desulphurization system according to claim 1, it is characterized in that: described take out device (1) arranges dilution cooler (10), dilution air blast (11) and cyclone separator (12).
3. according to new dry process rotary kiln kiln exit gas desulphurization system according to claim 1, it is characterized in that: described pulping device (3) arranges pulping tank, described pulping tank is arranged agitator (13) and densimeter.
4. according to new dry process rotary kiln kiln exit gas desulphurization system according to claim 1, it is characterized in that: described storage device (3) arranges holding vessel, described holding vessel is arranged agitator (13) and densimeter.
5. according to new dry process rotary kiln kiln exit gas desulphurization system according to claim 1, it is characterized in that: described conveying device (4) arranges delivery pump group and circulating pump group.
6. according to new dry process rotary kiln kiln exit gas desulphurization system according to claim 1, it is characterized in that: described injection apparatus (5) arranges atomizing lance.
7., according to the sulfur removal technology of the new dry process rotary kiln kiln exit gas desulphurization system described in claim 1 to 6, it is characterized in that:
Described sulfur removal technology is:
Extract decomposition furnace outlet and contain active CaO gas;
Containing active CaO gas by dilution cooler (10) cooling, will be gathered dust by cyclone separator (12), material collection got off;
The material collected is sent into the holding vessel of storage device (3), add water, stir in advance, formed and store slurries;
Slurries are sent into the pulping tank of pulping device (2), then add water, stir, make the Ca (OH) that mass concentration is 20% ~ 30%
2slurries;
By the delivery pump group of conveying device (4), be the Ca (OH) of 20% ~ 30% by concentration
2slurries deliver to injection apparatus (5);
By the atomizing lance of injection apparatus (5), be the Ca (OH) of 20% ~ 30% respectively by concentration
2slurries are ejected into outlet or the entrance of conditioning Tower (7) and raw mill (8), the SO in reduction flue gas
2.
8. according to the sulfur removal technology of new dry process rotary kiln kiln exit gas desulphurization system according to claim 7, it is characterized in that: when described pulping tank slurries do not reach setting concentration, carry a part of slurries by the circulating pump group in conveying device (4) from holding vessel to pulping tank.
9. according to the sulfur removal technology of new dry process rotary kiln kiln exit gas desulphurization system according to claim 7, it is characterized in that: the concentration of slurry that described pulping tank is made is 26.5%.
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|---|---|---|---|
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|---|---|---|---|
| CN201510066668.0A CN104587826A (en) | 2015-02-09 | 2015-02-09 | Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof |
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| CN105498508A (en) * | 2015-12-02 | 2016-04-20 | 湖南省小尹无忌环境能源科技开发有限公司 | Desulfurization method adopting dry-process rotary kiln production line system equipment |
| CN105536506A (en) * | 2016-01-27 | 2016-05-04 | 西安建筑科技大学 | Online kiln exit gas self-desulfuration method and system |
| CN105561753A (en) * | 2016-01-26 | 2016-05-11 | 南京圣火环境科技有限公司 | Novel dry process cement kiln flue gas online desulfurization device and technology |
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| CN105771599A (en) * | 2016-04-11 | 2016-07-20 | 苏州中丹环保科技有限公司 | Desulfurizer for flue of novel dry-method cement production line and preparing method thereof |
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| CN109351156A (en) * | 2018-11-20 | 2019-02-19 | 东方电气集团东方锅炉股份有限公司 | A kind of the removing system and removal methods of cement kiln tail gas sulphur dioxide |
| CN112619403A (en) * | 2020-12-01 | 2021-04-09 | 贵州省鑫瀚蓝环保科技有限公司 | Cement kiln semi-dry desulfurization system design |
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| CN115055040A (en) * | 2022-07-20 | 2022-09-16 | 天津水泥工业设计研究院有限公司 | Low-temperature denitration and sulfur fixation method and system based on cement clinker production line |
| CN115121109A (en) * | 2022-07-20 | 2022-09-30 | 天津水泥工业设计研究院有限公司 | Low NO X System and process for denitration of flue gas and auxiliary desulfurization treatment of escaping ammonia |
| CN115974435A (en) * | 2023-01-10 | 2023-04-18 | 福建龙麟环境工程有限公司 | Dynamic sulfur suppression system and method for novel dry-process cement kiln under automatic control of DCS |
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| CN104888599A (en) * | 2015-05-28 | 2015-09-09 | 上海三融环保工程有限公司 | Spray drying desulfurizer used for cement plant and process method |
| CN105498508B (en) * | 2015-12-02 | 2018-07-06 | 湖南省小尹无忌环境能源科技开发有限公司 | A kind of sulfur method equipped using dry-process rotary kiln line production system |
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| CN105561753A (en) * | 2016-01-26 | 2016-05-11 | 南京圣火环境科技有限公司 | Novel dry process cement kiln flue gas online desulfurization device and technology |
| CN105536506A (en) * | 2016-01-27 | 2016-05-04 | 西安建筑科技大学 | Online kiln exit gas self-desulfuration method and system |
| CN105771616A (en) * | 2016-01-27 | 2016-07-20 | 西安建筑科技大学 | A method and system for online removal of SO2 from kiln tail gas by using raw meal powder |
| CN105771599A (en) * | 2016-04-11 | 2016-07-20 | 苏州中丹环保科技有限公司 | Desulfurizer for flue of novel dry-method cement production line and preparing method thereof |
| CN105753347A (en) * | 2016-04-12 | 2016-07-13 | 苏州正蓝环保科技有限公司 | Furnace burden modifying device for new dry-process cement production line |
| CN107754591A (en) * | 2017-11-20 | 2018-03-06 | 上海三融环保工程有限公司 | A kind of high-efficient atomizing desulfurizer and method |
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| CN109351156A (en) * | 2018-11-20 | 2019-02-19 | 东方电气集团东方锅炉股份有限公司 | A kind of the removing system and removal methods of cement kiln tail gas sulphur dioxide |
| CN109351156B (en) * | 2018-11-20 | 2024-02-02 | 东方电气集团东方锅炉股份有限公司 | System and method for removing sulfur dioxide in tail gas of cement kiln |
| CN112619403A (en) * | 2020-12-01 | 2021-04-09 | 贵州省鑫瀚蓝环保科技有限公司 | Cement kiln semi-dry desulfurization system design |
| CN113522003A (en) * | 2021-08-09 | 2021-10-22 | 安徽海螺建材设计研究院有限责任公司 | Semi-dry desulfurization method for intermittent high-temperature flue gas of cement plant |
| CN115055040A (en) * | 2022-07-20 | 2022-09-16 | 天津水泥工业设计研究院有限公司 | Low-temperature denitration and sulfur fixation method and system based on cement clinker production line |
| CN115121109A (en) * | 2022-07-20 | 2022-09-30 | 天津水泥工业设计研究院有限公司 | Low NO X System and process for denitration of flue gas and auxiliary desulfurization treatment of escaping ammonia |
| CN115121109B (en) * | 2022-07-20 | 2024-04-30 | 天津水泥工业设计研究院有限公司 | Low NOXSystem and process for flue gas denitration and auxiliary desulfurization treatment of escaped ammonia |
| CN115055040B (en) * | 2022-07-20 | 2024-04-30 | 天津水泥工业设计研究院有限公司 | Low-temperature denitration sulfur fixation method and system based on cement clinker production line |
| CN115974435A (en) * | 2023-01-10 | 2023-04-18 | 福建龙麟环境工程有限公司 | Dynamic sulfur suppression system and method for novel dry-process cement kiln under automatic control of DCS |
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