CN101285580B - Dust and flue gas processing method in carbon product kneading and compacting procedure - Google Patents
Dust and flue gas processing method in carbon product kneading and compacting procedure Download PDFInfo
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- CN101285580B CN101285580B CN2008101148087A CN200810114808A CN101285580B CN 101285580 B CN101285580 B CN 101285580B CN 2008101148087 A CN2008101148087 A CN 2008101148087A CN 200810114808 A CN200810114808 A CN 200810114808A CN 101285580 B CN101285580 B CN 101285580B
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- rotary kiln
- processing method
- dust
- asphalt
- flue gas
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000428 dust Substances 0.000 title claims abstract description 33
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 22
- 238000004898 kneading Methods 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 239000010426 asphalt Substances 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 16
- 239000002562 thickening agent Substances 0.000 claims description 8
- 239000002006 petroleum coke Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000000571 coke Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 2
- 239000002737 fuel gas Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 239000011295 pitch Substances 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000274 adsorptive effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Working-Up Tar And Pitch (AREA)
Abstract
The invention relates to a processing method for collecting dusty gas in carbon products kneading molding process. The invention is characterized by processing procedures which are as follows: after carbonaceous dust and asphalt fume are collected, which are formed in the process of asphalt melting, kneading, pasting, molding and cooling; the formed carbonaceous dust and the formed asphalt fume are collectedly sent to an air inlet of a calciner or a rotary kiln to serve as air distribution of the refinery coke calciner or the rotary kiln, and then are led into the calciner or the rotary kiln to perform full combustion in the temperature of between 1150 to 1350DEG C in the calciner or the rotary kiln; through combustion, organic substances in flue gases of the asphalt are decomposed and hazard of the gases can be consequently eliminated. The processing method for collecting dusty gas in carbon product kneading molding process has the advantages of simple process, reliable technology and low operating cost, and can effectively and completely process the flue gas of the asphalt and eliminate secondary pollution; at the same time, the processing method can fully utilizes the heat formed through combustion of the fuel gas to save fuel or provide more afterheat and reduce production cost of the carbon products, thus the processing method has great economic benefit and environment protection benefit.
Description
Technical field
The present invention relates to a kind of processing method of carbon product kneading and compacting process dust and flue gas.
Background technology
The raw material that uses in the carbon product factory production process at present mainly is petroleum coke and coal tar pitch.In the manufacture process of carbon product broken screening in main completion the, asphalt melting, batching, mix pinch, operations such as moulding, thickener cooling.The mixed pressing section of kneading wherein gives out a large amount of harmful smokes, and main component is carbonaceous dust and glance coal etc.The harmful chemical 3 that glance coal and dust are contained, the 4-BaP is a carcinogenic substance, its discharging serious harm is healthy.In general, contain the flue gas of coke dust and particle merely, can effectively be administered through bag-type dusting and cyclone dust removal.For handling glance coal, in each link the device of giving a dinner of welcome that ventilates is set, carry out purified treatment to glance coal and the plain dust collection of charcoal.Though in ventilation shaft, lower (the general 100-500mg/Nm of the concentration of glance coal
3), but the adhesion because glance coal very easily condenses makes its difficult treatment.
The processing scheme that at present asphalt smoke that produces in the kneading and compacting process is adopted mainly contains three: 1. separate type high-voltage electrostatic dust separator; Basically can qualified discharge; But the flue-gas temperature of handling there is strict requirement (optimum flue-gas temperature 100-120 ℃); But the flue-gas temperature of gathering dust is lower than 50 ℃, and receives seasonal effect bigger, so need the gas that gathers dust is carried out adjustment.In case temperature fluctuation will influence treatment effect.2. the carbon dust absorption method will consume a large amount of carbon dusts, and technological process is complicated, the replacing and the difficult treatment of absorption material, and the use antianode quality of absorption material exerts an influence.3. for the asphalt smoke that contains carbon dust that produces in the kneading process, can also handle by bag filter, the problem of existence is that glance coal solidifies the back and carbon powder particle is prone to stick to the dust collecting sleeve surface, is difficult to cleaning, and stops up dust collecting sleeve, and receive Influence of Temperature.The technology of up-to-date introduction be in adsorptive reactor with carbon dust adsorptive pitch cigarette, use the impulse bag dust scrubber then.This method comes with some shortcomings: flow process is complicated, investment is big, and energy consumption is high; The powdered carbon that has adsorbed glance coal returns use, the accuracy of influence prescription; The dust and the glance coal that also contain part in the final tail gas of discharging.Firing method is to handle the otherwise effective technique of bitumen flue gas.But in the green anode manufacture process, the glance coal that pitch is discharged under melting condition is collected lower (the about 100-500mg/Nm of back concentration with dust collection pipe
3), can not directly burn.
Though some large-scale charcoal ink factories and newly-built charcoal ink factory have built flue gas treatment and purification device; But poor reliability and system maintenance difficulty higher owing to the equipment operating cost, system's long-time running are high; Cause that these cleaning system operational effects are poor, the situation of mal-operation nothing to be surprised at, regulation effect is difficult to long-term maintenance.Also have quite a few local small-sized charcoal ink factory owing to restricted by scale and economic factor, the low-concentration flue gas that is produced is not treated direct emptying basically.
Summary of the invention
The object of the invention is exactly to be directed against the deficiency that above-mentioned art methods exists, the processing method of the carbon product kneading and compacting process dust and flue gas of the heat that provide a kind of and can thoroughly handle, effectively eliminate secondary pollution to the carrying out of glance coal, technology is simple, technological reliably, operating cost is low, makes full use of the smoke combustion generation, fuel saving, reduction carbon product production cost.
The objective of the invention is to realize through following technical scheme.
A kind of processing method of carbon product kneading and compacting process dust and flue gas; It is characterized in that processing procedure be with asphalt melting, mix the carbonaceous dust pinch, to produce in thickener moulding and the cooling procedure and glance coal and collect after; Compile the air intake vent place that sends into calcining furnace or rotary kiln; As the air distribution of petroleum coke calciners or rotary kiln, introduce calcining furnace or rotary kiln, it is fully burnt through 1150～1350 ℃ of high temperature in calcining furnace or rotary kiln.
The processing method of a kind of carbon product kneading and compacting process dust and flue gas of the present invention; With asphalt melting, mix carbonaceous dust and the glance coal pinch, to produce in thickener moulding and the cooling procedure and collect respectively through existing smoke gas collecting apparatus, the asphalt smoke that wherein produces in asphalt melting, thickener moulding and the cooling procedure adopts the negative pressure dust suction to collect; The asphalt smoke that contains carbon dust that produces in the kneading process adopts the negative pressure dust suction to collect; After compiling, all kinds of flue gas conduit outlets of collecting send into the air intake vent place of calcining furnace (or rotary kiln); Air distribution as petroleum coke calciners (or rotary kiln); Introduce calcining furnace (or rotary kiln), it is fully burnt through high temperature (1150～1350 ℃) in calcining furnace (or rotary kiln).Through burning, decompose the organic matter in the bitumen flue gas, thoroughly eliminate its harm and in flue gas, reclaim heat.
Method of the present invention is with the method for the flue gas that produces in the carbon product kneading and compacting process as the direct high-temp combustion of petroleum coke calciners (or rotary kiln) air distribution, thoroughly effective to the processing of glance coal; Eliminated secondary pollution; Technology is simple, and technology is reliable, and operating cost is low.Can make full use of simultaneously the heat that smoke combustion produces, fuel saving or more waste heat is provided reduces the carbon product production cost, has great economic benefit, has popularizing application prospect widely.
The specific embodiment
A kind of processing method of carbon product kneading and compacting process dust and flue gas; Its processing procedure be with asphalt melting, mix the carbonaceous dust pinch, to produce in thickener moulding and the cooling procedure and glance coal and collect after; Compile the air intake vent place that sends into calcining furnace or rotary kiln; As the air distribution of petroleum coke calciners or rotary kiln, introduce calcining furnace or rotary kiln, it is fully burnt through 1150～1350 ℃ of high temperature in calcining furnace or rotary kiln.Through burning, decompose the organic matter in the bitumen flue gas, thoroughly eliminate its harm and in flue gas, reclaim heat.
Embodiment 1
Anode production factory with a 60kt/a is an example, in the green anode manufacture process, the flue gas that asphalt melting, thickener mixed pinches, operations such as cooling, moulding produce is collected the back with 14000Nm
3The flow of/h gets into rotary kiln as air distribution.Flue gas and the air of sending into rotary kiln burn under 1150 ℃ high temperature.Handle back flue gas medium pitch cigarette content less than 10.0mg/Nm
3, be lower than discharging standards.
Embodiment 2
Negative electrode factory with a 25kt/a is an example, in giving birth to cathode fabrication process, the flue gas that asphalt melting, thickener mixed pinches, operations such as cooling, moulding produce is collected the back with 6000Nm
3The flow of/h gets into calcining furnace as air distribution, and flue gas and the air of sending into calcining furnace burn under 1350 ℃ high temperature.Handle back flue gas medium pitch cigarette content less than 8.9mg/Nm
3, be lower than discharging standards.
Embodiment 3
Graphite electrode production with a 10kt/a is example, at first will give birth to the flue gas that produces in the electrode production and collect the back with 2400Nm
3The flow of/h gets into calcining furnace as air distribution, and flue gas and the air of sending into calcining furnace burn under 1200 ℃ high temperature.Handle back flue gas medium pitch cigarette content less than 9.5mg/Nm
3, be lower than discharging standards.
Claims (1)
1. the processing method of a carbon product kneading and compacting process dust and flue gas; It is characterized in that processing procedure be with asphalt melting, mix the carbonaceous dust pinch, to produce in thickener moulding and the cooling procedure and glance coal and collect after; Compile the air intake vent place that sends into calcining furnace or rotary kiln; As the air distribution of petroleum coke calciners or rotary kiln, introduce calcining furnace or rotary kiln, it is fully burnt through 1150～1350 ℃ of high temperature in calcining furnace or rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101148087A CN101285580B (en) | 2008-06-12 | 2008-06-12 | Dust and flue gas processing method in carbon product kneading and compacting procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101148087A CN101285580B (en) | 2008-06-12 | 2008-06-12 | Dust and flue gas processing method in carbon product kneading and compacting procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101285580A CN101285580A (en) | 2008-10-15 |
| CN101285580B true CN101285580B (en) | 2012-03-21 |
Family
ID=40057913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101148087A Active CN101285580B (en) | 2008-06-12 | 2008-06-12 | Dust and flue gas processing method in carbon product kneading and compacting procedure |
Country Status (1)
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| CN (1) | CN101285580B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776273B (en) * | 2010-01-26 | 2011-06-29 | 云南源鑫炭素有限公司 | Method for high-efficiently processing asphalt fumes |
| CN107653462B (en) * | 2017-10-27 | 2023-06-13 | 贵阳铝镁设计研究院有限公司 | Asphalt smoke gas collection treatment method and device in roasting process of aluminum electrolysis cell |
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2008
- 2008-06-12 CN CN2008101148087A patent/CN101285580B/en active Active
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| Publication number | Publication date |
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| CN101285580A (en) | 2008-10-15 |
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