CN108298844A - A kind of clinker drop alkali device and implementation method - Google Patents
A kind of clinker drop alkali device and implementation method Download PDFInfo
- Publication number
- CN108298844A CN108298844A CN201810306645.6A CN201810306645A CN108298844A CN 108298844 A CN108298844 A CN 108298844A CN 201810306645 A CN201810306645 A CN 201810306645A CN 108298844 A CN108298844 A CN 108298844A
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- China
- Prior art keywords
- clinker
- air mixing
- level
- mixing device
- gas
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- 239000003513 alkali Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000004062 sedimentation Methods 0.000 claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003546 flue gas Substances 0.000 claims abstract description 5
- 239000002956 ash Substances 0.000 claims description 8
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000004568 cement Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- -1 sulphur compound Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/60—Methods for eliminating alkali metals or compounds thereof, e.g. from the raw materials or during the burning process; methods for eliminating other harmful components
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Toxicology (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of clinker drop alkali device and implementation methods, including preheating in rotary kiln device, kiln tail smoke-box, bypass takes wind pipeline, level-one vortex air mixing device, denitrification apparatus, Flue valve, two level vortex air mixing device, humidification and sedimentation tower, helixseal conveying device, exhaust dust device with bag, air-introduced machine, chimney, conveyer belt, high-temperature flue gas in preheating in rotary kiln device takes wind pipeline to take out high alkalinity gas by the bypass of kiln tail smoke-box, by level-one vortex air mixing device, into denitrification apparatus denitration, enter back into the sedimentation of two level vortex air mixing device, ash viscosity lowers, gas enters exhaust dust device with bag, it is discharged from chimney by air-introduced machine.The dust outward transport of discharge is handled, and the high alkali element in clinker is discharged with dust.It has the technical effect that when bypass rate is 5% ~ 30%, clinker alkali equivalent can be reduced to 5% ~ 60%, clinker improves 2% ~ 6%, and clinker 28d intensity improves 3MPa or more；It can be that cement production enterprise widens crude fuel source, reduce production cost.
Description
Technical field
The present invention relates to a kind of cement production device, more particularly to a kind of clinker drop alkali device and implementation method.
Background technology
In New Type Dry-process Cement Production, alkali, chlorine, the sulphur compound brought by former, fuel can recycle inside kiln system
With enrichment and the highest position of alkali, chlorine, sulfur compound concentration be usually located at kiln tail smoke-box part.If the harmful components mistake in raw material
Height can cause kiln tail smoke-box, dore furnace, decomposition furnace outlet heat economizer and preheater to enter the positions such as tremie pipe of kiln skinning stifled
Plug, to seriously affect the normal operation of kiln.More importantly if the nuisances composition such as potassium, sodium, chlorine is excessively high in former, fuel,
The alkali content in cement clinker can be made excessively high, influence clinker 28d intensity and make concrete generate alkali-aggregate reaction and destroy construction of structures,
Influence the construction of structures service life.Domestic enterprises most at present ensure that cement is ripe using the high-quality crude fuel of low alkali, chlorinity
Expect the normal operation and cement product quality of production line.External low alkali cement mainly uses bypass technology, existing master
Want, the disadvantage is that ash is very glutinous in the high-temperature flue gas released, all there are problems that taking kiln ash adhesion in wind air hose to block, therefore mostly
Number cement production enterprise generally seldom uses this method.But as the surplus of cement output and the high-quality crude fuel for producing cement are got over
Come less, raising of the different user to cement quality requirement, how economic low alkali cement of producing becomes vast cement production enterprise
Urgent hope.
Invention content
In view of the problems existing in the prior art, a kind of clinker drop alkali device of present invention offer and implementation method, specifically
Technical solution is：Alkali device drops in a kind of clinker, including preheating in rotary kiln device, kiln tail smoke-box, bypass take wind pipeline, level-one whirlpool
Revolve air mixing device, denitrification apparatus, Flue valve, two level vortex air mixing device, humidification and sedimentation tower, No.1 helixseal conveying dress
It sets, exhaust dust device with bag, air-introduced machine, chimney, conveyer belt and No. two helixseal conveying devices, it is characterised in that：In rotary kiln
Kiln tail smoke-box in the middle part of trepanning take the sealing of wind pipeline one end to fix with bypass, it is mixed that bypass takes wind pipeline other end connection level-one to be vortexed
Wind apparatus, level-one vortex air mixing device, denitrification apparatus, Flue valve, two level vortex air mixing device, humidification and sedimentation tower are used successively
Pipeline links together, and there are No.1 helixseal conveying device in humidification and sedimentation tower bottom end, there is conveyer belt below, is humidified and heavy
Drop tower side surface upper part has gas pipeline valve, gas pipeline one end to be connect with gas pipeline valve, the connection of the gas pipeline other end
In exhaust dust device with bag entrance, No. two helixseal conveying devices are arranged at exhaust dust device with bag bottom, there is conveyer belt, pocket type below
The outlet of dust-extraction unit is connected with air-introduced machine entrance, air-introduced machine outlet connection chimney.
Implementation method is, after the high-temperature flue gas in preheating in rotary kiln device enters kiln tail smoke-box, by the bypass of kiln tail smoke-box
Wind pipeline is taken to take out high alkalinity gas, high-temperature gas first passes through level-one vortex air mixing device, and temperature is controlled 950 DEG C ~ 600
DEG C, subsequently into denitrification apparatus denitration, enter back into the control of two level vortex air mixing device its temperature at 450 DEG C ~ 250 DEG C, ash viscosity
Lower, after being settled into humidification and sedimentation tower, gas is entered by the gas pipeline valve of side surface upper part by gas pipeline
Exhaust dust device with bag is finally discharged from chimney by air-introduced machine, and the dust that is discharged enters after humidification and sedimentation tower are settled
The ashes being separately provided store and outward transport facility, and the high alkali element in clinker is discharged with dust.
The solution have the advantages that when bypass rate be 5% ~ 30% when, can by clinker alkali equivalent reduce by 5% ~ 60%, it is ripe
Expect that output increased 2% ~ 6%, clinker 28d intensity improve 3MPa or more；It can be that cement production enterprise widens crude fuel source, reduce life
Produce cost.
Description of the drawings
Fig. 1 is the system structure schematic diagram of the present invention.
Specific implementation mode
As shown in Figure 1, alkali device drops in a kind of clinker, including preheating in rotary kiln device 2, kiln tail smoke-box 3, bypass take air hose
Road 4, level-one vortex air mixing device 5, denitrification apparatus 6, Flue valve 7, two level vortex air mixing device 8, humidification and sedimentation tower 9, one
Number helixseal conveying device 10, exhaust dust device with bag 11, air-introduced machine 12, chimney 13, conveyer belt 14 and No. two helixseals are defeated
Send device 15, it is characterised in that：The sealing of 4 one end of wind pipeline is taken to fix with bypass in the 3 middle part trepanning of kiln tail smoke-box of rotary kiln 1,
Bypass takes 4 other end of wind pipeline connection level-one vortex air mixing device 5, level-one vortex air mixing device 5, denitrification apparatus 6, Flue valve
7, two level vortex air mixing device 8, humidification and sedimentation tower 9 are linked together with pipeline successively, and there are No.1 in humidification and 9 bottom end of sedimentation tower
Helixseal conveying device 10 has conveyer belt 14, humidification and 9 side surface upper part of sedimentation tower to have gas pipeline valve, gas transmission below
Pipeline one end is connect with gas pipeline valve, and the gas pipeline other end is connected to 11 entrance of exhaust dust device with bag, bag-type dusting dress
Setting 11 bottoms has No. two helixseal conveying devices 15, there is conveyer belt 14, the outlet of exhaust dust device with bag and air-introduced machine below
12 entrances are connected, and air-introduced machine 12 exports and finally connect chimney 13.
The implementation method of drop alkali is after the high-temperature flue gas in preheating in rotary kiln device 2 enters kiln tail smoke-box 3, by kiln tail smoke-box
3 bypass takes wind pipeline 4 to take out high alkalinity gas, and high-temperature gas first passes through the control of 5 its temperature of level-one vortex air mixing device 950
DEG C ~ 600 DEG C, subsequently into 6 denitration of denitrification apparatus, the control of 8 its temperature of two level vortex air mixing device is entered back into 450 DEG C ~ 250
DEG C, ash viscosity lowers, and after being settled into humidification and sedimentation tower 9, gas is passed through defeated by the gas pipeline valve of side surface upper part
Feed channel enters exhaust dust device with bag 11, is finally discharged from chimney 13 by air-introduced machine 12.After humidification and sedimentation tower 9 are settled
The dust of discharge enters the ashes storage being separately provided and outward transport facility, and the high alkali element in clinker is discharged with dust.
Embodiment one
By taking certain company one daily output, 5700 tons of cement clinker production lines are using bypass production low alkali cement clinker as an example, clinker
Yield is 5700t/d, heat consumption of clinker 742Kcal/Kg, coal low heat valve in kind are 5700Kcal/Kg, kiln hood and kiln tail are fed
In the case that coal amount is 40%, 60%, 3 total exhaust gas parameters of kiln tail smoke-box are 91727Nm3/h-1100 DEG C in kiln, consider that alkali content needs
Will by 0.8 be reduced to 0.6 hereinafter, by calculate learn kiln tail bypass take wind pipeline 4 leak informaton rate be 10%, i.e., bypass take wind pipeline 4
The amount of leaking informaton is 9173Nm3/h.
Claims (2)
1. alkali device, including preheating in rotary kiln device drop in a kind of clinker（2）, kiln tail smoke-box（3）, bypass take wind pipeline（4）, one
Grade vortex air mixing device（5）, denitrification apparatus（6）, Flue valve（7）, two level vortex air mixing device（8）, humidification and sedimentation tower
（9）, No.1 helixseal conveying device（10）, exhaust dust device with bag（11）, air-introduced machine（12）, chimney（13）, conveyer belt（14）
With No. two helixseal conveying devices（15）, it is characterised in that：In rotary kiln（1）Kiln tail smoke-box（3）Middle part trepanning and bypass
Take wind pipeline（4）One end sealing is fixed, and bypass takes wind pipeline（4）The other end connects level-one vortex air mixing device（5）, level-one vortex
Air mixing device（5）, denitrification apparatus（6）, Flue valve（7）, two level vortex air mixing device（8）, humidification and sedimentation tower（9）It uses successively
Pipeline links together, humidification and sedimentation tower（9）There is No.1 helixseal conveying device in bottom end（10）, there is conveyer belt below
（14）, humidification and sedimentation tower（9）Side surface upper part has gas pipeline valve, and gas pipeline one end is connect with gas pipeline valve, defeated
The feed channel other end is connected to exhaust dust device with bag（11）Entrance, exhaust dust device with bag（11）No. two helixseal conveyings are arranged at bottom
Device（15）, there is conveyer belt below（14）, exhaust dust device with bag（11）Outlet and air-introduced machine（12）Entrance is connected, air-introduced machine
（12）Outlet connection chimney.
2. using a kind of implementation method of clinker drop alkali and heat reclaim unit described in claim 1, it is characterised in that：
Implementation method is preheating in rotary kiln device（2）In high-temperature flue gas enter kiln tail smoke-box（3）Afterwards, by kiln tail smoke-box（3）Bypass
Take wind pipeline（4）High alkalinity gas is taken out, high-temperature gas first passes through level-one vortex air mixing device（5）Its temperature control 950 DEG C ~
600 DEG C, subsequently into denitrification apparatus（6）Denitration enters back into two level vortex air mixing device（8）Its temperature is controlled 450 DEG C ~ 250
DEG C, ash viscosity lowers, into humidification and sedimentation tower（9）After being settled, gas is passed through by the gas pipeline valve of side surface upper part
Gas pipeline enters exhaust dust device with bag（11）, by air-introduced machine（12）Finally from chimney（13）Discharge, humidification and sedimentation tower（9）
The dust being discharged after being settled enters the ashes storage being separately provided and outward transport facility, the high alkali element in clinker with
Dust is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306645.6A CN108298844A (en) | 2018-04-08 | 2018-04-08 | A kind of clinker drop alkali device and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306645.6A CN108298844A (en) | 2018-04-08 | 2018-04-08 | A kind of clinker drop alkali device and implementation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108298844A true CN108298844A (en) | 2018-07-20 |
Family
ID=62847007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810306645.6A Pending CN108298844A (en) | 2018-04-08 | 2018-04-08 | A kind of clinker drop alkali device and implementation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108298844A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921667A (en) * | 2019-12-27 | 2020-03-27 | 天津健威泽节能环保科技股份有限公司 | System for capturing and purifying carbon dioxide in cement clinker production line and implementation method |
| CN112179156A (en) * | 2020-09-30 | 2021-01-05 | 大连九五高科新能源发展有限公司 | Bypass air-bleeding energy-saving emission-reduction utilization system and process for cooperatively treating waste in cement kiln |
| CN112179155A (en) * | 2020-09-30 | 2021-01-05 | 大连九五高科新能源发展有限公司 | Energy-saving emission-reducing utilization system and process for cement kiln bypass air-bleeding exhaust waste gas |
| CN112212702A (en) * | 2020-09-30 | 2021-01-12 | 大连九五高科新能源发展有限公司 | A system and process for comprehensive utilization of energy-saving and emission-reduction by bypass air release of cement kiln |
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| CN104033905A (en) * | 2014-06-23 | 2014-09-10 | 杨义军 | System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation |
| CN105444582A (en) * | 2015-12-16 | 2016-03-30 | 上海三橙能源科技有限公司 | Cement kiln tail flue gas treatment device and technological method characterized by combination of bypass air release and staged combustion |
| US20160347657A1 (en) * | 2013-10-08 | 2016-12-01 | Khd Humboldt Wedag Gmbh | Method for denitrification of bypass exhaust gases in a plant for producing cement clinker |
-
2018
- 2018-04-08 CN CN201810306645.6A patent/CN108298844A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160347657A1 (en) * | 2013-10-08 | 2016-12-01 | Khd Humboldt Wedag Gmbh | Method for denitrification of bypass exhaust gases in a plant for producing cement clinker |
| CN104033905A (en) * | 2014-06-23 | 2014-09-10 | 杨义军 | System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation |
| CN105444582A (en) * | 2015-12-16 | 2016-03-30 | 上海三橙能源科技有限公司 | Cement kiln tail flue gas treatment device and technological method characterized by combination of bypass air release and staged combustion |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921667A (en) * | 2019-12-27 | 2020-03-27 | 天津健威泽节能环保科技股份有限公司 | System for capturing and purifying carbon dioxide in cement clinker production line and implementation method |
| CN112179156A (en) * | 2020-09-30 | 2021-01-05 | 大连九五高科新能源发展有限公司 | Bypass air-bleeding energy-saving emission-reduction utilization system and process for cooperatively treating waste in cement kiln |
| CN112179155A (en) * | 2020-09-30 | 2021-01-05 | 大连九五高科新能源发展有限公司 | Energy-saving emission-reducing utilization system and process for cement kiln bypass air-bleeding exhaust waste gas |
| CN112212702A (en) * | 2020-09-30 | 2021-01-12 | 大连九五高科新能源发展有限公司 | A system and process for comprehensive utilization of energy-saving and emission-reduction by bypass air release of cement kiln |
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Application publication date: 20180720 |
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