CN108046622A - It is a kind of to improve double thorax kiln exhaust gas CO2The device and method of concentration - Google Patents
It is a kind of to improve double thorax kiln exhaust gas CO2The device and method of concentration Download PDFInfo
- Publication number
- CN108046622A CN108046622A CN201810050805.5A CN201810050805A CN108046622A CN 108046622 A CN108046622 A CN 108046622A CN 201810050805 A CN201810050805 A CN 201810050805A CN 108046622 A CN108046622 A CN 108046622A
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- CN
- China
- Prior art keywords
- double thorax
- exhaust gas
- concentration
- air blower
- kiln exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000038 chest Anatomy 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 58
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 9
- 235000019738 Limestone Nutrition 0.000 description 9
- 235000011941 Tilia x europaea Nutrition 0.000 description 9
- 239000004571 lime Substances 0.000 description 9
- 239000006028 limestone Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
Abstract
This technology provides a kind of simple structure, the double thorax kiln exhaust gas CO of raising at low cost2The device of concentration, double thorax kilns include left and right two burner hearths；Each roof of the furnace has feeding device and the exhaust emissions pipeline being connected with vent gas treatment exhaust system, and top has fuel and combustion air inlet, and lower part is connected with cooling air blower outlet, and bottom has device for discharging；Two burner hearths are communicated in middle and lower part by gas passage；Bypass branch is connect in exhaust emissions pipeline to communicate with cooling air blower entrance.This technology provides a kind of raising pair thorax kiln exhaust gas CO easy to operate, investment is small, does not interfere with double thorax kilns normally produces simultaneously2The method of concentration is that a part for double thorax kiln exhaust gas after dedusting is sent into through cooling air blower in double thorax kilns, the material in double thorax kilns is cooled down.
Description
Technical field
This technology is related to the double thorax kiln exhaust gas CO of raising2The device and method of concentration.
Background technology
Double-hearth lime kiln has had the applicating history of many decades, and the occupation rate of market in the whole world is very high, but due to its discharge
The CO of tail gas2Levels are low, and universal hardly possible is in PCC, liquid CO2Production industry use, even with the manufacture cost of product
It is very high.
With reference to figure 1, double-hearth lime kiln is the limekiln for having left and right two burner hearths, and each roof of the furnace has feeding device 1
（Including total Limestone silo 10, lower-left barrel 12, left hopper 13, bottom right barrel 14, right hopper 15）With tail gas cover 21, top has
Fuel and combustion air inlet（Including the left fuel inlet 31 communicated with 100 top of left hearth and left combustion air inlet 32, with
The right fuel inlet 33 and right combustion air inlet 34 that 200 top of right bearth communicates）, lower part is connected with cooling air blower outlet
（100 lower part of left hearth is communicated with left cooling air blower outlet 41,200 lower part of right bearth exports 42 phases with right cooling air blower
It is logical）, bottom has device for discharging（Including the left device for discharging 51 communicated with 100 bottom of left hearth and 200 bottom phase of right bearth
Logical right device for discharging 52, total discharge bin 53）；Two burner hearths are communicated in middle and lower part by gas passage 300.Tail gas cover 21 removes
Dirt device 22, air-introduced machine 23, chimney 24 are connected by pipeline.
Usual technological process is as shown in the figure.Lime stone is added in through feeding device from the top of two burner hearths.Fuel, combustion-supporting sky
Gas is also to be added in from the top of two burner hearths, and is flowed to equidirectional with material.When left hearth refuelling, combustion air burn
When, refuelling and combustion air, all tail gas do not emit right bearth at the top of right bearth through tail gas cover.When right bearth plus
When fuel, combustion air burning, refuelling and combustion air, all tail gas will be at the top of left hearths through tail gas cover for left hearth
It emits.The work period property of left and right burner hearth is alternately.
Fuel and combustion air enter in burner hearth, and fuel combustion generates high-temperature gas, and lime stone is heated, by preheating, forging
Lime is resolved into after burning and is continued traveling downwardly into cooling zone and is met with the cooling wind facies entered from cooling air blower outlet, after being cooled
Kiln body is drawn off by device for discharging.It is then the cooling zone being sent to air by air blower in kiln to cool down wind, and lime is carried out
Cooling.
The CO that the tail gas and carbonate decomposition of the fuel combustion production of left hearth downlink generate2After leaving calcining zone, pass through
The gas passage being connected between two kiln cylinder bodies enters right bearth, and is arranged after rising preheating right bearth material at the top of right bearth
Go out；By the outlet of left cooling air blower into left hearth and the cooling wind of uplink（Air）It leaves behind cooling zone also by two
The gas passage being connected between kiln cylinder body enters right bearth, and goes out after rising preheating right bearth material from right bearth top row；It is logical
Right cooling air blower outlet is crossed into the cooling wind of the interior simultaneously uplink of right bearth（Air）Then directly rise the gas come with left hearth
Go out after mixing from right bearth top row, be then discharged by deduster, air-introduced machine in air.The friendship of the work period property of two burner hearths
For progress.
Obviously, from after the burning that the final gas that roof of the furnace discharges is generated by left hearth or right bearth gas, two
Burner hearth cools down wind（Air）Three strands of gas compositions, due to cooling down wind（Air）Hardly participate in it is combustion-supporting, effect only to lime into
Row cooling, so the final tail gas O2 contents discharged from roof of the furnace are high, CO2Content is low, CO2Content only 16-20%.This kiln top
Tail gas generally all cannot be used for liquid CO2Or the production of PCC, even if very high with production cost, efficiency will substantially reduce.
The content of the invention
The purpose of this technology is to provide a kind of simple structure, the double thorax kiln exhaust gas CO of raising at low cost2The device of concentration, from
It fundamentally changes double thorax kiln exhaust gas and is usually not used for production PCC and liquid CO2Situation.
The double thorax kiln exhaust gas CO of raising described in this technology2The device of concentration, double thorax kilns include left and right two burner hearths；
Each roof of the furnace has feeding device and the exhaust emissions pipeline being connected with vent gas treatment exhaust system, and top has fuel and helps
Air intake is fired, lower part is connected with cooling air blower outlet, and bottom has device for discharging；Two burner hearths pass through gas in middle and lower part
Body passage communicates；Bypass branch is connect in exhaust emissions pipeline to communicate with cooling air blower entrance.
As to the double thorax kiln exhaust gas CO of the raising2Being further improved for the device of concentration, is provided on bypass branch
The cooler cooled down to the tail gas by bypass branch.Preferably, the bypass branch between cooler and cooling air blower entrance
Road is provided with damper.If cooling air blower is roots blower, preferably the air blower uses Frequency Converter Control.
This technology provides a kind of raising pair thoraxes easy to operate, investment is small, does not interfere with double thorax kilns normally produces simultaneously
Kiln exhaust gas CO2The method of concentration.
The double thorax kiln exhaust gas CO of raising described in this technology2The method of concentration is the part double thorax kiln exhaust gas after dedusting
It is sent into through cooling air blower in double thorax kilns, the material in double thorax kilns is cooled down.
The double thorax kiln exhaust gas CO of another raising described in this technology2The method of concentration is double thorax kiln exhaust gas after dedusting
After a part is cooled down, it is sent into through cooling air blower in double thorax kilns, the material in double thorax kilns is cooled down.
The advantageous effect of this technology：This technology is sent using double thorax kiln exhaust gas as cooling wind rather than using air as cooling wind
Enter and lime is cooled down in double thorax kilns, improve the CO in double thorax kiln exhaust gas2Concentration, will be using air as the double of cooling wind
The CO of thorax kiln exhaust gas2Concentration is increased to 30% or so by 16-20%, close to Theory of Combustion value.By cooler to entering double thorax kilns
Cooling wind（The double thorax kiln exhaust gas in part）It is more preferable to the cooling effect of material after being cooled down.It meanwhile can be with by damper
Adjust the cooling airflow amount needed.This technology realizes CO in double thorax kiln exhaust gas to invest less simple structure2Concentration is shown
It writes and improves, the double thorax kiln exhaust gas of radical change are usually not used for production PCC and liquid CO2Situation.Simultaneously as shunting
Sizable part of smoke, thus the production capacity of original kiln exit gas air-introduced machine can be reduced, be conducive to save electric energy.
Additionally, due to employing lime kiln exhaust gas as cooling wind, and the CO of tail gas2Higher concentration, specific heat is also higher than air, so
The amount of cooling wind can be reduced suitably, and the production capacity of cooling air blower can also suitably reduce, and be also beneficial to save electric energy.This
Invention proposes a kind of raising double-hearth lime kiln tail gas CO2The specific method of content opens up new application field for double thorax kilns, with
And existing double-hearth lime kiln enterprise development PCC, liquid CO2Product provides advantage.
Description of the drawings
Fig. 1 is to improve double thorax kiln exhaust gas CO2The device of concentration is in use state diagram.
In figure, left hearth 100, right bearth 200, gas passage 300, lime stone lifting device 400, feeding device 1（Including
Total Limestone silo 10, lower-left barrel 12, left hopper 13, bottom right barrel 14, right hopper 15）, vent gas treatment exhaust system（Including logical
Cross the tail gas cover 21 that exhaust emissions pipeline is connected, deduster 22, air-introduced machine 23, chimney 24 etc.）, it is left fuel inlet 31, left combustion-supporting
Air intake 32, right fuel inlet 33, right combustion air inlet 34, left cooling air blower outlet 41, the outlet of right cooling air blower
42nd, left device for discharging 51, right device for discharging 52, total discharge bin 53, bypass branch 6, left damper 71, right damper 72,
Total damper 73, damper 74, cooler 8, left air blower 91, right air blower 92.
Specific embodiment
The double thorax kiln exhaust gas CO of raising shown in Figure 12The device of concentration, double thorax kilns are with left hearth 100, the right side
The limekiln of burner hearth 200, each roof of the furnace have feeding device 1（Including total Limestone silo 10, lower-left barrel 12, left hopper 13,
Bottom right barrel 14, right hopper 15）With tail gas cover 21, top has fuel and combustion air inlet（Including with 100 top of left hearth
The left fuel inlet 31 and left combustion air inlet 32 that communicate, the right fuel inlet 33 communicated with 200 top of right bearth and the right side help
Fire air intake 34）, lower part is connected with cooling air blower outlet（100 lower part of left hearth exports 41 phases with left cooling air blower
Logical, 200 lower part of right bearth is communicated with right cooling air blower outlet 42）, bottom has device for discharging（Including with 100 bottom of left hearth
Left device for discharging 51 that portion communicates, right device for discharging 52, the total discharge bin 53 communicated with 200 bottom of right bearth）；Two burner hearths exist
Middle and lower part is communicated by gas passage 300.Tail gas cover 21, deduster 22, damper 74, air-introduced machine 23, chimney 24 pass through tail
Gas discharge pipe is connected to form vent gas treatment exhaust system.Tail gas cover 21 can be regarded as the entrance of exhaust emissions pipeline.Double
The side of thorax kiln is provided with to send lime stone to the lime stone lifting device 400 in total Limestone silo.
Bypass branch 6 is drawn on tail gas discharging pipe road between deduster 22 and damper 74.Bypass branch 6 is set
Total damper 73, cooler 8 etc..Left cooling air blower outlet 41 is communicated with left hearth, and the entrance of left air blower 91 passes through a left side
Damper 71 is communicated with the offgas outlet of cooler 8.Right cooling air blower outlet 42 is communicated with by burner hearth, right air blower 92
Entrance is communicated by right damper 72 with the offgas outlet of cooler 8.
Specifically, it is the exhaust emissions pipeline connection after deduster in order to improve content of nitrogen dioxide in tail gas
Air-introduced machine, smoke stack emission to air were connected in one threeway all the way, were sent into the import of two cooling air blowers all the way, per all the way
Installation and adjustment air door respectively controls the flow on each road.If necessary, can cooling air blower be further lowered by cooler
Gas temperature.
Pass through the implementation of this scheme, the CO of 1. pairs of thorax kiln exhaust gas2Concentration will greatly improve, and reach 30% or so or even connect
Nearly Theory of Combustion value；2. the normal operating in limekiln is not influenced；3. reduced investment hardly increases operating cost.
Claims (5)
1. a kind of improve double thorax kiln exhaust gas CO2The device of concentration, double thorax kilns include left and right two burner hearths；Each roof of the furnace tool
There are feeding device and the exhaust emissions pipeline being connected with vent gas treatment exhaust system, top has fuel and combustion air inlet,
Lower part is connected with cooling air blower outlet, and bottom has device for discharging；Two burner hearths are communicated in middle and lower part by gas passage；
It is characterized in that：Bypass branch is connect in exhaust emissions pipeline to communicate with cooling air blower entrance.
2. as described in claim 1 improve double thorax kiln exhaust gas CO2The device of concentration, it is characterized in that：It is provided on bypass branch pair
The cooler cooled down by the tail gas of bypass branch.
3. as claimed in claim 2 improve double thorax kiln exhaust gas CO2The device of concentration, it is characterized in that：Cooler and cooling air blower
Damper is provided on bypass branch between entrance.
4. a kind of improve double thorax kiln exhaust gas CO2The method of concentration, it is characterized in that：The part of double thorax kiln exhaust gas after dedusting through cold
But air blower is sent into double thorax kilns, and the material in double thorax kilns is cooled down.
5. a kind of improve double thorax kiln exhaust gas CO2The method of concentration, it is characterized in that：A part for double thorax kiln exhaust gas after dedusting is carried out
After cooling, it is sent into through cooling air blower in double thorax kilns, the material in double thorax kilns is cooled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050805.5A CN108046622A (en) | 2018-01-18 | 2018-01-18 | It is a kind of to improve double thorax kiln exhaust gas CO2The device and method of concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050805.5A CN108046622A (en) | 2018-01-18 | 2018-01-18 | It is a kind of to improve double thorax kiln exhaust gas CO2The device and method of concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108046622A true CN108046622A (en) | 2018-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810050805.5A Pending CN108046622A (en) | 2018-01-18 | 2018-01-18 | It is a kind of to improve double thorax kiln exhaust gas CO2The device and method of concentration |
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| Country | Link |
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| CN (1) | CN108046622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793781A (en) * | 2018-07-24 | 2018-11-13 | 陈文武 | A kind of energy-saving and environment-friendly twin furnace lime burner furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205127629U (en) * | 2015-09-01 | 2016-04-06 | 北京嘉永会通能源科技有限公司 | Tail gas processing apparatus and be used for buffer tube of tail gas treatment |
| CN207891273U (en) * | 2018-01-18 | 2018-09-21 | 南京苏冶钙业技术有限公司 | It is a kind of to improve double thorax kiln exhaust gas CO2The device of concentration |
-
2018
- 2018-01-18 CN CN201810050805.5A patent/CN108046622A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205127629U (en) * | 2015-09-01 | 2016-04-06 | 北京嘉永会通能源科技有限公司 | Tail gas processing apparatus and be used for buffer tube of tail gas treatment |
| CN207891273U (en) * | 2018-01-18 | 2018-09-21 | 南京苏冶钙业技术有限公司 | It is a kind of to improve double thorax kiln exhaust gas CO2The device of concentration |
Non-Patent Citations (1)
| Title |
|---|
| 张美杰等: "《无机非金属材料工业窑炉》", 30 April 2008, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793781A (en) * | 2018-07-24 | 2018-11-13 | 陈文武 | A kind of energy-saving and environment-friendly twin furnace lime burner furnace |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180518 |