CN210332186U - Cement kiln tail flue gas mercury discharges real-time control system - Google Patents
Cement kiln tail flue gas mercury discharges real-time control system Download PDFInfo
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- CN210332186U CN210332186U CN201921078882.8U CN201921078882U CN210332186U CN 210332186 U CN210332186 U CN 210332186U CN 201921078882 U CN201921078882 U CN 201921078882U CN 210332186 U CN210332186 U CN 210332186U
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- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 111
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000004568 cement Substances 0.000 title claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000003546 flue gas Substances 0.000 title claims abstract description 38
- 239000000428 dust Substances 0.000 claims abstract description 93
- 239000004744 fabric Substances 0.000 claims abstract description 67
- 238000002347 injection Methods 0.000 claims abstract description 49
- 239000007924 injection Substances 0.000 claims abstract description 49
- 239000007787 solid Substances 0.000 claims abstract description 34
- 239000007790 solid phase Substances 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 239000002594 sorbent Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 79
- 239000012071 phase Substances 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 35
- 239000007921 spray Substances 0.000 claims description 20
- 239000003463 adsorbent Substances 0.000 claims description 19
- 239000000779 smoke Substances 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 239000007792 gaseous phase Substances 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- -1 mercury ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
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Abstract
The utility model provides a cement kiln tail flue gas mercury discharges real-time control system, it includes solid sorbent injection system, kiln tail sack dust collector, the high mercury-containing sack ash storehouse that gathers dust of cement batching station and mercury discharge on-line monitoring system, but the mercury content in the real-time supervision cement kiln system discharges the flue gas, and through automatic control solid sorbent injection process, mercury in the flue gas is absorbed in the entrapment, make mercury shift to the solid phase from the gaseous phase, obtain the high mercury-containing sack ash that gathers dust, and collect by the high mercury-containing sack ash storehouse that gathers dust. Therefore, mercury pollution of the discharged flue gas is completely avoided, and meanwhile, the dust of the cloth bag with high mercury content is independently recovered and used as a cement mixed material, so that comprehensive utilization of resources is realized.
Description
Technical Field
The utility model relates to a flue gas demercuration technical field, concretely relates to cement kiln tail flue gas mercury discharges real-time control system.
Background
The mercury emission of China is the most important part of the world, and accounts for 1/3 of the total mercury emission in the world. And the mercury emission in the cement industry is the third major source after coal burning and non-ferrous metal smelting, so that the realization of flue gas mercury emission reduction in the cement industry is an industry development trend. At present, the main technical means for controlling mercury pollution in the cement industry is to control the mercury adding amount in a kiln at the source.
However, the raw combustion materials used in cement production are various and have huge total amount, and the mercury content in different types and batches of incoming materials is not uniformly distributed, so that the total amount of mercury is difficult to estimate. And most cement kilns undertake urban solid waste absorption tasks to different degrees, mercury brought by solid waste of different types and batches also increases the difficulty of controlling mercury emission sources of the cement kilns, and the phenomenon that the content of mercury entering the kilns exceeds the control range in a short period is easy to occur. Mercury is enriched at the tail of the kiln along with the circulation of kiln dust after entering the kiln, short-term release can be generated, instantaneous standard exceeding emission enters the atmosphere, and the short-term standard exceeding emission of the mercury at the tail of the kiln is one of the technical difficulties needing to be broken through in the emission control of the mercury in cement production. Therefore, the real-time control of the mercury emission of the cement kiln tail flue gas needs to be realized, so that the mercury emission can meet the national standard.
In view of this, the utility model is especially provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cement kiln tail flue gas mercury discharges real-time control system.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model relates to a cement kiln tail flue gas mercury discharge real-time control system, which comprises a solid adsorbent injection system, a kiln tail cloth bag dust collector, a high mercury-containing cloth bag dust collecting bin, a cement batching station high mercury-containing cloth bag dust collecting bin and a mercury discharge online monitoring system, wherein,
the kiln tail cloth bag dust collector is provided with a gas phase inlet, a gas phase outlet and a solid phase outlet, the gas phase inlet of the kiln tail cloth bag dust collector is connected with a smoke outlet of a cement kiln system through a pipeline, a solid adsorbent injection system is arranged on a connecting pipeline of the gas phase inlet and the smoke outlet of the cement kiln system and used for spraying a solid adsorbent to smoke entering the kiln tail cloth bag dust collector to enable the solid adsorbent to be in contact with mercury in the smoke to realize mercury adsorption, the treated smoke is discharged from the gas phase outlet of the kiln tail cloth bag dust collector, and a mercury discharge online monitoring system is arranged at the gas phase outlet of the kiln tail cloth bag dust collector and used for detecting the mercury content in the discharged smoke in real time;
the solid phase outlet of the kiln tail cloth bag dust collector is connected with the inlet of a high mercury-containing cloth bag dust collection ash bin through a pipeline, the outlet of the high mercury-containing cloth bag dust collection ash bin is connected with the inlet of the high mercury-containing cloth bag dust collection ash bin of the cement batching station through a pipeline,
the high-mercury-content cloth bag dust collection ash bin and the high-mercury-content cloth bag dust collection ash bin of the cement batching plant are both used for collecting solid matters in flue gas, and the solid matters are subsequently reused for producing cement.
Preferably, the kiln tail cloth bag dust collector further comprises a chimney, and the chimney is connected with a gas-phase outlet of the kiln tail cloth bag dust collector through a pipeline and used for discharging standard-reaching flue gas.
Preferably, the mercury discharge online monitoring system is positioned on a connecting pipeline between the chimney and a gas phase outlet of the kiln tail cloth bag dust collector.
Preferably, the cement mill is further included, and the cement mill is connected with an outlet of the high mercury-containing cloth bag dust collection ash bin of the cement batching station and is used for producing cement from dust collected by the high mercury-containing cloth bag dust collection ash bin of the cement batching station.
Preferably, the solid adsorbent injection system comprises an activated carbon discharging bin, a discharging pipe, a discharging device, a roots blower, an injection pipeline and an injector, wherein,
the active carbon blanking bin is funnel-shaped, the bottom of the active carbon blanking bin is provided with a funnel hole,
one end of the discharge pipe penetrates into the funnel hole, the other end of the discharge pipe is connected with the injection pipeline, a blanking device is arranged on the discharge pipe and used for outputting the activated carbon from the activated carbon blanking bin and sequentially conveying the activated carbon into the discharge pipe and the injection pipeline, the tail end of the injection pipeline is positioned in a connecting pipeline between a gas phase inlet of the kiln tail cloth bag dust collector and a smoke outlet of the cement kiln system,
the Roots blower is arranged on the injection pipeline and used for inputting the active carbon into the injection pipeline through wind energy,
the ejector is arranged on the ejection pipeline and used for generating high-pressure airflow to output the activated carbon into the ejection pipeline.
Preferably, the kiln tail cloth bag dust collector further comprises a spray gun, wherein the spray gun is arranged at the tail end of the spray pipeline and used for inputting the activated carbon into a gas phase inlet of the kiln tail cloth bag dust collector.
Preferably, the injection pipeline is provided with a gas phase inlet, a solid phase inlet and a solid phase outlet, the gas phase inlet is provided with the roots blower, the solid phase inlet is connected with the discharge pipe, the solid phase inlet is provided with the injector, and the solid phase outlet is connected with the spray gun.
Preferably, the spray gun is positioned in a gas phase inlet of the kiln tail bag dust collector.
Preferably, the spray guns are arranged in a single row or multiple rows along the radial direction of the flue.
Preferably, the activated carbon blanking bin adopts vacuum feeding.
The utility model has the advantages that:
the utility model provides a cement kiln tail flue gas mercury discharges real-time control system, it includes solid sorbent injection system, kiln tail sack dust collector, the high mercury-containing sack ash storehouse that gathers dust of cement batching station and mercury discharge on-line monitoring system, but mercury content in real-time supervision and control cement kiln system discharge flue gas, and through automatic control solid sorbent injection process, mercury in the entrapment absorption flue gas, make mercury shift to the solid phase from the gaseous phase, obtain high mercury-containing sack ash that gathers dust, and collect by the high mercury-containing sack ash storehouse that gathers dust. Therefore, mercury pollution of the discharged flue gas is completely avoided, and meanwhile, the dust of the cloth bag with high mercury content is independently recovered and used as a cement mixed material, so that comprehensive utilization of resources is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a cement kiln tail flue gas mercury emission real-time control system.
Fig. 2 is a schematic configuration diagram of a solid adsorbent injection system.
In the figure:
1-a cement kiln tail flue gas mercury discharge real-time control system;
11-solid sorbent injection system;
111-an active carbon discharging bin;
112-a discharge pipe; 113-a blanking device; 114-roots blower; 115-an injection pipe;
116-a spray gun; 117-an ejector;
12-kiln tail cloth bag dust collector; 13-high mercury-containing cloth bag dust collecting ash bin;
14-high mercury-containing cloth bag dust collection ash bin of cement batching plant; 15-mercury emission on-line monitoring system;
16-a chimney; 17-cement grinding;
2-a cement kiln system;
21-flue.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model relates to a cement kiln tail flue gas mercury discharges real-time control system 1, as shown in figure 1, this real-time control system includes that solid sorbent injection system 11, kiln tail cloth bag dust collector 12, high mercury-containing sack gather dust ash bin 13, cement batching station height contain mercury sack gather dust ash bin 14 and mercury discharge on-line monitoring system 15.
Wherein the kiln tail cloth bag dust collector 12 is provided with a gas phase inlet, a gas phase outlet and a solid phase outlet. The gas-phase inlet of the kiln tail cloth bag dust collector 12 is connected with the smoke outlet of the cement kiln system 2 through a pipeline. The cement kiln system 2 comprises cement kiln, decomposing furnace, preheater, spray tower, raw meal mill and other devices which are connected in sequence and can generate flue gas containing solid matters. Be equipped with solid adsorbent injection system 11 on the connecting line of gaseous phase import and cement kiln system 2 outlet flue for spray solid adsorbent (the utility model discloses a powdered activated carbon) to the flue gas that gets into kiln tail sack dust collector 12, make the mercury contact in solid adsorbent and the flue gas, realize mercury and adsorb, the gaseous phase export discharge of kiln tail sack dust collector 12 is followed to the flue gas after the processing. The gas-phase outlet of the kiln tail cloth bag dust collector 12 is provided with a mercury discharge online monitoring system 15, which can detect the mercury content in the discharged flue gas in real time, including the concentration of mercury simple substance and mercury ions in the flue gas. The mercury discharge online monitoring system 15 can also transmit monitoring data to a control center, and the solid adsorbent injection system 11 is controlled in a feedback mode according to the mercury concentration value in the flue gas, so that the adding amount of the activated carbon is increased and decreased. The mercury emission on-line monitoring system 15 can adopt advanced and stable on-line monitoring systems in the United states, Germany and the like.
Further, the mercury discharge online monitoring system 15 can be set to update one total mercury data every 2-5 min, and when two continuous total mercury data exceed the mercury content set value, the solid adsorbent injection system 11 is started. The national standard of the emission limit value of the mercury content of the tail flue gas of the cement kiln is 50 mu g/m3The utility model sets the mercury content set value as 30-50 mug/m3。
The solid-phase outlet of the kiln tail cloth bag dust collector 12 is connected with the inlet of a high-mercury-containing cloth bag dust collection ash bin 13 through a pipeline, and the outlet of the high-mercury-containing cloth bag dust collection ash bin 13 is connected with the inlet of a high-mercury-containing cloth bag dust collection ash bin 14 of a cement batching station through a pipeline. After being output from the kiln tail cloth bag dust collector 12, high-mercury-content solid in the flue gas sequentially enters a high-mercury-content cloth bag dust collection ash bin 13 and a high-mercury-content cloth bag dust collection ash bin 14 of a cement batching station, so that the discharge amount of mercury in the flue gas can be effectively reduced. The collected solids can subsequently be reused for cement production.
In an embodiment of the present invention, the cement kiln tail flue gas mercury discharge real-time control system 1 further comprises a chimney 16. The chimney 16 is connected with the gas-phase outlet of the kiln tail cloth bag dust collector 12 through a pipeline and is used for discharging the smoke reaching the standard. In the preferred embodiment of the present invention, the online mercury emission monitoring system 15 is disposed on the connection pipeline between the chimney 16 and the gas phase outlet of the kiln tail bag dust collector 12.
In an embodiment of the present invention, the cement kiln tail flue gas mercury discharge real-time control system 1 further comprises a cement mill 17. The cement mill 17 is connected with an outlet of the high mercury-containing cloth bag dust collection ash bin 14 of the cement batching station, and dust collected by the high mercury-containing cloth bag dust collection ash bin 14 of the cement batching station can be used as a mixed material for producing cement. The conventional cement mill 17 is a cylindrical rotary device and comprises two ball milling chambers. The materials are fed into the first bin of the mill by a feeding device through a hollow shaft, a stepped lining plate or a corrugated lining plate is arranged in the bin, steel balls with different specifications are filled in the bin, the barrel rotates to generate centrifugal force to bring the steel balls to a certain height and then fall down, and the materials are impacted and ground. After the material reaches rough grinding in the first bin, the material enters the second bin through the single-layer bin partition plate, the flat lining plate is inlaid in the bin, the steel ball is arranged in the bin, and the material is further ground. The powder is discharged through the discharging grate plate to finish the grinding operation. The cement mill 17 has the characteristics of strong adaptability to materials, continuous production, large crushing ratio, easy speed regulation of fineness of ground products and the like. The cement mill 17 can be produced either by a dry process or a wet process. And the grinding and drying can be simultaneously carried out.
In one embodiment of the present invention, as shown in fig. 2, the solid adsorbent injection system 11 includes an activated carbon hopper 111, a discharge pipe 112, a feeder 113, a roots blower 114, an injection pipe 115, and an injector 117.
Wherein, the activated carbon blanking bin 111 is funnel-shaped, and the bottom thereof is provided with a funnel hole. The top of the activated carbon blanking bin 111 is provided with a motor, and vacuum feeding is adopted. In actual use, the powdered activated carbon is packaged and transported to the site by ton bags, the ton bags are opened and sealed, then the gun head of the vacuum feeding machine is inserted into the activated carbon, and the activated carbon is sucked into the activated carbon blanking bin 111 through the vacuum system.
One end of the discharge pipe 112 penetrates into the funnel hole, and the other end is connected with the injection pipeline 115, so that the activated carbon blanking bin 111 is connected and communicated with the injection pipeline 115. A blanking device 113 is arranged on the discharge pipe 112 and is used for outputting the activated carbon from the activated carbon blanking bin 111 and sequentially conveying the activated carbon into the discharge pipe 112 and the injection pipeline 115. The blanking device 113 can discharge the solid matters in the active carbon blanking bin 111 in time and ensure the sealing of the whole system. The tail end of the injection pipeline 115 is positioned in a connecting pipeline between a gas-phase inlet of the kiln tail cloth bag dust collector 12 and a smoke outlet of the cement kiln system 2,
a roots blower 114 is provided on the injection duct 115 for feeding activated carbon into the injection duct 115 by wind power. The roots blower 114 is a positive displacement rotary blower that compresses and delivers gas by relative motion of two or three lobed rotors within a cylinder.
An ejector 117 is provided on the injection duct 115 for generating a high-pressure gas flow to output the activated carbon into the injection duct 115. The utility model discloses an air ejector utilizes compressed air or ordinary pressure air as working medium. The activated carbon powder is inputted into the injection duct 115 by sucking air by generating a low pressure at the nozzle outlet by the air flow and then compressing the air to be discharged. The end of the injection pipeline 115 is positioned in a connecting pipeline between the gas-phase inlet of the kiln tail cloth bag dust collector 12 and the smoke outlet of the cement kiln system 2, so that the activated carbon powder reacts with the smoke in the connecting pipeline to generate mercury adsorption.
In an embodiment of the present invention, the solid adsorbent injecting system 11 further comprises a spray gun 116, and the spray gun 116 is disposed at the end of the injecting pipe 115 for inputting the activated carbon into the gas phase inlet of the kiln tail cloth bag dust collector 12. Further, the spray gun 116 is located in the gas phase inlet of the kiln tail bag dust collector 12, and can realize the spraying process of the powdered activated carbon by the shortest path. The injection pipeline 115 can be provided with a flow control system to control the injection amount of the spray gun 116, so that excessive addition or deficiency of the activated carbon is avoided, and the utilization rate of the activated carbon and the demercuration effect are improved.
Depending on the size of flue 21, spray guns 116 may be arranged in a single row or multiple rows along the radial direction of flue 21, and preferably multiple rows of spray guns 116 are arranged in parallel in flue 21 to improve the adsorption efficiency.
In one embodiment of the present invention, the injection pipe 115 is provided with a gas phase inlet, a solid phase inlet and a solid phase outlet, the gas phase inlet is provided with a roots blower 114, the solid phase inlet is connected with the discharge pipe 112, the solid phase outlet is connected with the spray gun 116, and the solid phase inlet is provided with an injector 117. Therefore, the active carbon powder can be directly sent into the injection pipeline 115 by the wind energy provided by the Roots blower 114, and the equipment integration design is realized.
The utility model discloses a 1 working process of cement kiln tail flue gas mercury discharge real-time control system as follows:
(1) at present, the mercury emission limit value of tail flue gas of a cement kiln is 50 mu g/m3And setting the mercury emission online monitoring system 15 to update one total mercury data every 4 min. When two consecutive mercury data exceed the set value of the control center (the set value is preferably 30 mug/m)3) And when the process is carried out, the solid adsorbent injection system 11 is started, the metered powdered activated carbon for the waste incineration power plant is injected to the solid-phase inlet of the kiln tail cloth bag dust collector 12, and meanwhile, dust collected by the kiln tail cloth bag dust collector 12 is discharged to the high-mercury-containing cloth bag dust collection bin 13. The activated carbon injection amount is determined by adopting an automatic or manual adjustment mode, and when the total mercury data of 10 continuous times is lower than a set value of a control center (the set value is preferably 30 mu g/m)3) At this time, the solid adsorbent injecting system 11 stops operating.
(2) And conveying dust collected by the high-mercury-content cloth bag dust collection bin 13 to a high-mercury-content cloth bag dust collection bin 14 of a cement batching plant in a sealed manner, and inputting the dust serving as a cement mixing material into a cement mill 17 together according to the mass ratio of 1-2.5% of cement to produce a cement product. Finally, the real-time standard control of the mercury discharge of the kiln tail gas is realized, and the in-plant consumption of dust collected by the high-mercury-containing cloth bag dust collection dust bin 13 is realized.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A cement kiln tail flue gas mercury discharge real-time control system is characterized by comprising a solid adsorbent injection system, a kiln tail cloth bag dust collector, a high mercury-containing cloth bag dust collection ash bin, a cement batching station high mercury-containing cloth bag dust collection ash bin and a mercury discharge online monitoring system, wherein,
the kiln tail cloth bag dust collector is provided with a gas phase inlet, a gas phase outlet and a solid phase outlet, the gas phase inlet of the kiln tail cloth bag dust collector is connected with a smoke outlet of a cement kiln system through a pipeline, a solid adsorbent injection system is arranged on a connecting pipeline of the gas phase inlet and the smoke outlet of the cement kiln system and used for spraying a solid adsorbent to smoke entering the kiln tail cloth bag dust collector to enable the solid adsorbent to be in contact with mercury in the smoke to realize mercury adsorption, the treated smoke is discharged from the gas phase outlet of the kiln tail cloth bag dust collector, and a mercury discharge online monitoring system is arranged at the gas phase outlet of the kiln tail cloth bag dust collector and used for detecting the mercury content in the discharged smoke in real time;
the solid phase outlet of the kiln tail cloth bag dust collector is connected with the inlet of a high mercury-containing cloth bag dust collection ash bin through a pipeline, the outlet of the high mercury-containing cloth bag dust collection ash bin is connected with the inlet of the high mercury-containing cloth bag dust collection ash bin of the cement batching station through a pipeline,
the high-mercury-content cloth bag dust collection ash bin and the high-mercury-content cloth bag dust collection ash bin of the cement batching plant are both used for collecting solid matters in flue gas, and the solid matters are subsequently used for producing cement.
2. The real-time control system of claim 1, further comprising a chimney connected to the gas phase outlet of the kiln tail bag house for discharging flue gas up to standard.
3. The real-time control system of claim 2, wherein the online mercury emission monitoring system is located on a connection pipeline between the chimney and a gas phase outlet of the kiln tail bag dust collector.
4. The real-time control system of claim 1, further comprising a cement mill, wherein the cement mill is connected with an outlet of the high mercury-containing cloth bag dust collecting bin of the cement batching plant and is used for producing cement from dust collected by the high mercury-containing cloth bag dust collecting bin of the cement batching plant.
5. The real-time control system of claim 1, wherein the solid sorbent injection system comprises an activated carbon hopper, a discharge pipe, a downer, a roots blower, an injection pipe, and an injector, wherein,
the active carbon blanking bin is funnel-shaped, the bottom of the active carbon blanking bin is provided with a funnel hole,
one end of the discharge pipe penetrates into the funnel hole, the other end of the discharge pipe is connected with the injection pipeline, a blanking device is arranged on the discharge pipe and used for outputting the activated carbon from the activated carbon blanking bin and sequentially conveying the activated carbon into the discharge pipe and the injection pipeline, the tail end of the injection pipeline is positioned in a connecting pipeline between a gas phase inlet of the kiln tail cloth bag dust collector and a smoke outlet of the cement kiln system,
the Roots blower is arranged on the injection pipeline and used for inputting the active carbon into the injection pipeline through wind energy,
the ejector is arranged on the ejection pipeline and used for generating high-pressure airflow to output the activated carbon into the ejection pipeline.
6. The real-time control system of claim 5, further comprising a spray gun disposed at a distal end of the spray pipe for inputting activated carbon into a gas phase inlet of the kiln tail bag house.
7. The real-time control system of claim 6, wherein the injection pipeline is provided with a gas phase inlet, a solid phase inlet and a solid phase outlet, the gas phase inlet is provided with the roots blower, the solid phase inlet is connected with the discharge pipe, and the solid phase outlet is connected with the spray gun.
8. The real-time control system of claim 6 or 7, wherein the spray gun is located in a gas phase inlet of a kiln tail bag dust collector.
9. The real-time control system of claim 8, wherein the lances are arranged in one or more rows along a radial direction of the flue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921078882.8U CN210332186U (en) | 2019-07-10 | 2019-07-10 | Cement kiln tail flue gas mercury discharges real-time control system |
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| CN201921078882.8U CN210332186U (en) | 2019-07-10 | 2019-07-10 | Cement kiln tail flue gas mercury discharges real-time control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193268A (en) * | 2019-07-10 | 2019-09-03 | 北京金隅琉水环保科技有限公司 | A kind of cement kiln end smoke mercury emission real-time control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193268A (en) * | 2019-07-10 | 2019-09-03 | 北京金隅琉水环保科技有限公司 | A kind of cement kiln end smoke mercury emission real-time control system |
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