CN107420883B - A kind of carbon industry exhausted air quantity and pollutant become Zero discharging system and method - Google Patents
A kind of carbon industry exhausted air quantity and pollutant become Zero discharging system and method Download PDFInfo
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- CN107420883B CN107420883B CN201710655855.1A CN201710655855A CN107420883B CN 107420883 B CN107420883 B CN 107420883B CN 201710655855 A CN201710655855 A CN 201710655855A CN 107420883 B CN107420883 B CN 107420883B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 22
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 22
- 238000007599 discharging Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 224
- 238000000746 purification Methods 0.000 claims abstract description 119
- 238000004898 kneading Methods 0.000 claims abstract description 45
- 239000004615 ingredient Substances 0.000 claims abstract description 41
- 238000001354 calcination Methods 0.000 claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 238000002156 mixing Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 206010022000 influenza Diseases 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001925 catabolic effect Effects 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 abstract 1
- 239000003570 air Substances 0.000 description 43
- 230000008569 process Effects 0.000 description 14
- 239000011269 tar Substances 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012716 precipitator Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- TXVHTIQJNYSSKO-UHFFFAOYSA-N benzo[e]pyrene Chemical class C1=CC=C2C3=CC=CC=C3C3=CC=CC4=CC=C1C2=C34 TXVHTIQJNYSSKO-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011339 hard pitch Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
- F23L2900/15043—Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
Become Zero discharging system and method the invention discloses a kind of carbon industry exhausted air quantity and pollutant.The system includes carbon exhaust gas purifying treatment system, boiler and boiler waste gas purification system, further includes flue connection system, and flue connects system and combustion air compensating unit is arranged.This method includes after kneading, calcining and roasting clean unit are mixed with the exhaust gas of ingredient exhaust purification unit, introducing boiler as combustion-supporting gas, when reaching the temperature and air quantity requirement of setting, the full combustion in burner hearth realizes that carbon industry exhaust gas is combustion-supporting, and exhausted air quantity and pollutant become zero-emission.Meanwhile glance coal and CO calorific value secondary use in exhaust gas, realize effects of energy saving and emission reduction.This patent provides a kind of new idea and method for carbon industry pollutant catabolic gene and pollution reduction.
Description
Technical field
The present invention relates to atmosphere pollution control technology fields more particularly to a kind of carbon industry exhausted air quantity and pollutant to become
Zero discharging system and method.
Background technique
Carbon industry main production raw material is coal tar pitch, petroleum coke, is a kind of heavy polluted industry.Compared with other industry,
Not only contain Conventional pollution, such as SO in the exhaust gas of carbon industry discharge2、NOx, particulate matter etc., and contain unconventional pollution
Object, such as glance coal, complicated component contain polycyclic aromatic hydrocarbon and benzopyrenes carcinogen.
Carbon industry production technique mainly include be crushed, sieve, grinding, ingredient, calcining, kneading and roasting etc., wherein dripping
Green fusing, kneading and compacting, calcining process etc. can generate glance coal.Currently, the improvement of glance coal is still a difficult point, even if drip
Green cigarette qualified discharge discharges dense since the total emission volumn of pollutant in exhaust gas is the product of exhausted air quantity and Pollutant emission concentration
Although degree is low, accumulated exhaust gas amount is big, and glance coals of these escapes still can not be ignored to accumulation ecology influence caused by environment.
Conventional carbon industry waste gas pollution control and treatment thinking is: one purification process of a furnace, such as calcine exhaust gas mostly successively using it is cooling,
Desulfurization process, calcining process exhaust gas mostly use cooling, electric tar and desulfurization process, and kneading process exhaust gas is handled using electric tar.
It is higher so as to cause the equipment investment of carbon waste gas pollution control and treatment and running cost, and operation and maintenance and complex management.Therefore, it reduces and administers
The cost and discharge amount of exhaust gas problem of carbon industry exhaust gas are very urgent.
Summary of the invention
In view of the above drawbacks of the prior art and problem, it is an object of the invention to: provide a kind of carbon industry exhaust gas
Amount and pollutant become Zero discharging system and method, and the treatment cost for solving carbon industry exhaust gas is high, while making exhausted air quantity and dirt
Dye object become zero-emission the problem of.
In order to achieve the above object, the invention provides the following technical scheme:
A kind of carbon industry exhausted air quantity and pollutant become Zero emission method, comprising:
Step S101 gives up the ingredient exhaust purification unit gas-taking end exhaust gas in carbon exhaust gas purifying treatment system, kneading
Gas clean unit gas-taking end exhaust gas, calciner emission clean unit gas-taking end exhaust gas and roaster exhaust purification unit gas-taking end are useless
Gas mixing, as combustion-supporting gas；
Step S102 is mixed after combustion-supporting gas mixing, then with the air for being preheating to certain temperature, after mixing
Gas collectively as current combustion-supporting gas, current combustion-supporting gas temperature and oxygen content reach setting minimum temperature and oxygen after mixing
When tolerance interval value, it is introduced into boiler；The minimum temperature is 80 DEG C, and oxygen content interval value is set in 15~21%；
For prevent hard pitch smoke waste gas and air or other other mix after temperature reduction cause pitch class viscosity big
Material condensation get off, other positions in blocking blower, conveyance conduit and boiler；
Preferably, kneading process exhaust gas, calcination process exhaust gas, calcining process exhaust gas boiler secondary air is introduced directly into enter
Mouthful, into boiler, temperature range is 150-230 DEG C；Burden process exhaust gas is introduced separately into boiler First air entrance.
It is further preferred that introducing boiler after kneading exhaust gas is taken from electrical tar precipitator；
Preferably, boiler fan uses anti-wear blower；
Step S103, the exhaust gas and pollutant in the carbon exhaust gas purifying treatment system are net by the original pollutant of boiler
The removal of change system.
A kind of carbon industry exhausted air quantity and pollutant become Zero discharging system, comprising: carbon exhaust gas purifying treatment system, pot
Furnace, it is characterised in that: further include flue connection system；The exhaust gas discharge end and flue of the carbon exhaust gas purifying treatment system connect
The gas inlet end of welding system connects, and the inlet end of the combustion-supporting gas of the exhaust gas discharge end and boiler of the flue connection system connects
It connects；The carbon exhaust gas purifying treatment system, including, the gas-taking end exhaust gas flow acquisition sensor of ingredient exhaust purification unit,
The gas-taking end exhaust gas flow of kneading exhaust purification unit acquires the gas-taking end exhaust gas flow of sensor, calciner emission clean unit
Acquisition sensor, roaster exhaust purification unit gas-taking end exhaust gas flow acquisition sensor, ingredient exhaust purification unit take
Gas end exhaust gas oxygen content acquires sensor, the gas-taking end exhaust gas oxygen content of kneading exhaust purification unit acquires sensor, calcining furnace
The gas-taking end exhaust gas oxygen content of exhaust purification unit acquires the gas-taking end exhaust gas oxygen content of sensor, roaster exhaust purification unit
Acquire sensor, booster fan, automatic regulating valve and combustion-supporting gas mixing arrangement；The flue connects system, comprising: air into
Gas end air mass flow acquires sensor, air preheat control unit；
It is useless in the ingredient exhaust purification unit, kneading exhaust purification unit, calciner emission clean unit and roaster
It is useless that the gas-taking end exhaust gas oxygen content acquisition sensor of ingredient exhaust purification unit, kneading is respectively set in the gas-taking end of gas clean unit
The gas-taking end exhaust gas oxygen content acquisition sensor of gas clean unit, the gas-taking end exhaust gas oxygen content of calciner emission clean unit are adopted
Collection sensor, roaster exhaust purification unit gas-taking end exhaust gas oxygen content acquisition sensor, ingredient exhaust purification unit take
Gas end exhaust gas flow acquires sensor, the gas-taking end exhaust gas flow of kneading exhaust purification unit acquires sensor, calciner emission
The gas-taking end exhaust gas flow acquisition sensor of clean unit, the gas-taking end exhaust gas flow of roaster exhaust purification unit acquire sensing
Device, the booster fan and the automatic regulating valve；The inlet end setting air inlet end air mass flow of the air, which acquires, to be passed
Sensor；
Compensated with air unit is set in the flue connection system, air inlet is set on the compensated with air unit
Air mass flow is held to acquire sensor, the inlet end of the compensated with air unit is passed through air, the exhaust of the compensated with air unit
End connect the inlet end connection of system with flue；
Gas-taking end exhaust gas oxygen content acquisition sensor, the kneading exhaust purification unit of the ingredient exhaust purification unit take
Gas end exhaust gas oxygen content acquires sensor, the gas-taking end exhaust gas oxygen content acquisition sensor of calciner emission clean unit, roasting
The gas-taking end exhaust gas oxygen content acquisition sensor of furnace exhaust clean unit is respectively to the gas-taking end exhaust gas of ingredient exhaust purification unit
Oxygen content, the gas-taking end exhaust gas oxygen content of kneading exhaust purification unit, the gas-taking end exhaust gas of calciner emission clean unit are oxygen-containing
Amount, the gas-taking end exhaust gas oxygen content of roaster exhaust purification unit are acquired；The ingredient exhaust purification unit gas-taking end is useless
Throughput acquires sensor, the gas-taking end exhaust gas flow acquisition sensor of kneading exhaust purification unit, calciner emission purification list
The gas-taking end exhaust gas flow acquisition sensor of member and the gas-taking end exhaust gas flow acquisition sensor point of roaster exhaust purification unit
It is other useless to ingredient exhaust purification unit gas-taking end exhaust gas flow, the gas-taking end exhaust gas flow of kneading exhaust purification unit, calcining furnace
The gas-taking end exhaust gas flow of gas clean unit is acquired with the gas-taking end exhaust gas flow of roaster exhaust purification unit；The sky
Gas inlet end air mass flow acquisition sensor is acquired air inlet end air mass flow；The air preheat control unit pair
Air inlet end air carries out being heated to the minimum temperature；Ingredient exhaust purification unit, is forged kneading exhaust purification unit
Each mixed oxygen content of pipeline gas-taking end exhaust gas after burning the acquisition of furnace exhaust clean unit roaster exhaust purification unit passes through
It adjusts the automatic regulating valve to be adjusted with booster fan parameter, be made by adjusting exhaust gas flow described in the preceding each pipeline of mixing
Each mixed temperature of pipeline exhaust gas reaches the mixed minimum temperature setting oxygen interval value of exhaust gas, and each pipeline exhaust gas needs
It keeps the temperature；
The combustion-supporting gas mixing arrangement is set before the inlet end of flue connection system, the carbon is given up
The gas-taking end of ingredient exhaust purification unit, the gas-taking end of kneading exhaust purification unit, calcining furnace in gas cleaning treatment system is useless
The input terminal point of the gas-taking end of gas clean unit, the gas-taking end of roaster exhaust purification unit and the combustion-supporting gas mixing arrangement
It is not connected by gas piping, adds the automatic regulating valve and the booster fan on each section of pipeline；The combustion-supporting gas is mixed
Attach together the inlet end connection that the output end set connect system with the flue, the discharge end of flue connection system and boiler
The connection of combustion-supporting gas inlet end；Combustion-supporting gas discharge end is connected to boiler inlet end, by the furnace of combustion-supporting gas input boiler
In thorax, full combustion is carried out；
If the gas-taking end exhaust gas of ingredient exhaust purification unit part, kneading exhaust purification unit part gas-taking end exhaust gas,
It is reached after the gas-taking end exhaust gas of calciner emission clean unit part, the gas-taking end exhaust gas mixing of roaster exhaust purification unit part
To minimum temperature, it is re-introduced into the air for being preheating to certain temperature, after mixing with air, reaches setting oxygen interval value, then will mix
Ingredient exhaust purification unit, kneading exhaust purification unit, calciner emission clean unit, roaster exhaust purification unit after conjunction
Part gas-taking end exhaust gas, then mixed with the air after preheating, collectively as combustion-supporting gas.
Further, a kind of carbon industry exhausted air quantity and pollutant become Zero discharging system, further includes: boiler waste gas purification system
System；The boiler waste gas purification system, including, dust-extraction unit, desulfurizer and low-level (stack-gas) economizer；The low-level (stack-gas) economizer setting
Before dust-extraction unit, when so that gases entering dust-extraction unit, guarantee normal working temperature；The desulfurizer setting exists
Gases after dust-extraction unit, after handling boiler combustion.
The invention has the benefit that
1, to improve Jing-jin-ji region and surrounding area ambient air quality conscientiously, carbon enterprise is required production regulation, not only
It is required that exhaust emission reaches special emission limit, and require 50% or more limited production.Through the invention by carbon exhaust gas section
It instead of boiler combustion air, realizes that carbon exhaust gas becomes zero-emission, plays and the effect cutting down carbon industry production capacity and play the same tune on different musical instruments；
2, two in carbon exhaust gas can be removed by boiler of power plant or the existing dust-removal and desulfurizing denitration facility of Industrial Boiler
Sulfur oxide, NOx, particulate matter solve the operation that carbon enterprise " one contamination control technique of a furnace ", environmental protection equipment disperse more and tie up
Shield and management problems, are greatly reduced carbon environmental protection of enterprise operating cost；
3, it is burnt in boiler by carbon monoxide, glance coal, the long-standing carbon monoxide of carbon industry, drip can be solved
Green cigarette administers problem, can thoroughly eliminate some carcinogenic substances (such as BaP) discharged in carbon industry exhaust gas to human health
Cumulative effect；
4, by the chemical energy of recycling heat energy from waste gas, carbon monoxide, particulate matter containing charcoal and glance coal, the comprehensive of energy is realized
It closes and recycles, reduce boiler coal consumption, realize the high unity of energy-saving and emission-reduction.
Detailed description of the invention
Fig. 1 is current carbon industry exhaust treatment system flow diagram.
Fig. 2 is a kind of carbon industry exhausted air quantity of the present invention and pollutant becomes Zero discharging system schematic diagram.
Appended drawing reference:
Fig. 1: I, ingredient exhaust purification unit, II, calciner emission clean unit, III, kneading exhaust purification unit, IV,
Roaster exhaust purification unit, V, coal gas generating unit
Fig. 2: I, ingredient exhaust purification unit, II, kneading exhaust purification unit, III, calciner emission clean unit, IV,
Roaster exhaust purification unit, V, boiler and its waste gas cleaning system
The invention will be further described with specific embodiment with reference to the accompanying drawing.
Specific embodiment
Fig. 1 is current carbon industry exhaust treatment system flow diagram.Carbon industry exhaust purification unit mainly includes
Ingredient exhaust purification unit I, calciner emission clean unit II, kneading exhaust purification unit III, roaster exhaust purification unit
IV, the independent purified treatment of the exhaust gas of each process.The ingredient exhaust purification unit I includes deduster 1, air-introduced machine 2 and cigarette
Chimney 3, the calciner emission clean unit II include calcining furnace 4, waste heat recovery apparatus 5, cooling tower 6, desulphurization plant 7, draw
Blower 8 and chimney 9, the kneading exhaust purification unit III includes electrical tar precipitator 10, air-introduced machine 11 and chimney 12, described
Roaster exhaust purification unit IV includes air blower 13, roaster 14, waste heat recovery apparatus 15, cooling tower 16, electrical tar precipitator
17, desulphurization plant 18, air-introduced machine 19 and chimney 20, the coal gas generating unit V include air blower 21, gas generator 22.
Fig. 2 is a kind of carbon industry exhausted air quantity of the present invention and pollutant becomes Zero discharging system schematic diagram.A kind of carbon industry
Exhausted air quantity and the pollutant Zero discharging system that becomes mainly include ingredient exhaust purification unit I, kneading exhaust purification unit II, calcining furnace
Exhaust purification unit III, roaster exhaust purification unit IV；It further include that flue connects system.The ingredient exhaust purification unit
I, kneading exhaust purification unit II, calciner emission clean unit III, roaster exhaust purification unit IV open up gas-taking end respectively
A, gas-taking end B, gas-taking end C, gas-taking end D；The gas-taking end (A-D) is respectively arranged at the ingredient exhaust purification unit I and removes
After dirt device 1 and/or to be set to before II electrical tar precipitator 4 of kneading exhaust purification unit and/or be respectively arranged at the calcining furnace useless
Gas clean unit III, roaster exhaust purification unit IV waste heat recovery apparatus (8,15) after.The flue connection system setting
Air inlet end E, the ingredient exhaust purification unit I, kneading exhaust purification unit II, calciner emission clean unit III, roasting
The exhaust gas for burning the gas-taking end (A-D) of furnace exhaust clean unit IV imports combustion-supporting gas mixing arrangement 21 respectively.The ingredient is useless
Gas clean unit I, kneading exhaust purification unit II, calciner emission clean unit III, roaster exhaust purification unit IV take gas
4., 3., 1., 2. the pipeline connected between end (A-D) and the combustion-supporting gas mixed control unit inlet end F is；The flue
5. the pipeline of connection system connection is.
Illustrate: 1. for calcining furnace after waste heat equipment utilization, gradient is used in boiler as combustion-supporting gas to pipeline,
2. for roaster gas after waste heat equipment utilization, gradient is used in boiler as combustion-supporting gas to pipeline.Due to calcining furnace and roasting
It include carcinogen-glance coal in the exhaust gas that furnace generates, glance coal easily adheres in blower or pipeline, need to be to generation glance coal
Process gas, the transport pipeline that gradient utilizes 1., 2. have temperature requirement.
Concrete reason is as follows: a. exhaust gas temperature is not less than glance coal condensation temperature, is not higher than the inflammable and explosive temperature of glance coal,
It is here preferred that temperature is at 150-230 DEG C, b. requirements for pipes heat preservation, the pipeline temperature for being unlikely to convey glance coal in this way is reduced
Condensed to glance coal condensation temperature, glance coal is not delivered in technique with gas atomization state or outside technique it is direct
Burning utilizes, and calorific value utilizing status is preferable.Its exhaust gas temperature can control waste heat recovery apparatus gain of parameter by adjusting.
The system further includes boiler and its boiler waste gas purification system V；The boiler includes boiler 22；The boiler
Waste gas cleaning system V includes dust-extraction unit deduster 24, desulfurizer desulphurization plant 26, further includes, and low-level (stack-gas) economizer 23 draws
Blower 25, chimney 27.
The system further includes control device, and the control device includes multiple automatic regulating valves, (being used for will for booster fan
Exhaust gas introduces boiler in the pipeline of the road ①②③④), flow sensor, part of the multiple automatic regulating valve, booster fan,
It is net that the collection terminal of flow sensor is separately positioned on ingredient exhaust purification unit I, kneading exhaust purification unit II, calciner emission
Change and is connected between 21 inlet end of gas-taking end (A-D) and combustion-supporting gas mixing arrangement of unit III, roaster exhaust purification unit IV
Pipeline on and/or be arranged on the pipeline of the air inlet end E connection；Exhaust gas is monitored on-line by multiple flow sensors
Data on flows passes to control device, controls multiple automatic regulating valves and multiple booster fans；By ingredient, calcining, roasting and mix
It after the exhaust gas mixing for pinching process, then mixes with air, as current combustion-supporting gas, combustion-supporting gas flow is by adjusting the pressurization
Fan parameter and the automatic regulating valve parameter are adjusted, and are adjusted by adjusting combustion-supporting gas flow described in the preceding each pipeline of mixing
Whole each mixed temperature of pipeline exhaust gas, so that each mixed temperature of pipeline exhaust gas reaches minimum temperature and reaches setting oxygen
Interval value, each pipeline exhaust gas need to keep the temperature, and current combustion-supporting gas is introduced boiler, realizes the combustion-supporting use of exhaust gas of carbon industry
In boiler, achieve the effect that discharge amount of exhaust gas becomes zero.
Embodiment 1:
Produce 60000 tons of carbon anodes in aluminum electrolysis products factories per year, calcination process generates exhaust gas about 6000Nm3/ h, kneading exhaust gas is about
1100Nm3/ h, ingredient exhaust gas about 17000Nm3/ h roasts furnace exhaust about 22000Nm3/h.Using present system, can will more than
Process exhaust gas is completely used for certain 35t/h Industrial Boiler as combustion air.Compared with former waste gas cleaning system, generally, this hair
It is bright can exhaust gas emission reduction amount about 46100Nm3/ h, SO2Emission reduction about 15t/, NOxCan emission reduction about 2t/, glance coal can emission reduction about
1.5t/, cigarette/dust can emission reduction about 7.5t/, save 7t mark coal/year.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within 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 (3)
- The Zero emission method 1. a kind of carbon industry exhausted air quantity and pollutant become, comprising:Step S101, ingredient exhaust purification unit gas-taking end exhaust gas, the kneading exhaust gas in carbon exhaust gas purifying treatment system is net It is mixed to change unit gas-taking end exhaust gas, calciner emission clean unit gas-taking end exhaust gas and roaster exhaust purification unit gas-taking end exhaust gas It closes, as combustion-supporting gas；Step S102 is mixed, mixed gas after combustion-supporting gas mixing, then with the air for being preheating to certain temperature Body is collectively as current combustion-supporting gas, and current combustion-supporting gas temperature and oxygen content reach setting minimum temperature and amount of oxygen after mixing When interval value, it is introduced into boiler；The minimum temperature is 80 DEG C, and oxygen content interval value is set in 15~21%；Step S103, exhaust gas and pollutant in the carbon exhaust gas purifying treatment system pass through the original pollutant purification system of boiler System removal.
- The Zero discharging system 2. a kind of carbon industry exhausted air quantity and pollutant become, comprising: carbon exhaust gas purifying treatment system, boiler, It is characterized by also including flues to connect system；The exhaust gas discharge end of the carbon exhaust gas purifying treatment system is connect with flue The gas inlet end of system connects, and the inlet end of the combustion-supporting gas of the exhaust gas discharge end and boiler of the flue connection system connects It connects；The carbon exhaust gas purifying treatment system, including, the gas-taking end exhaust gas flow acquisition sensor of ingredient exhaust purification unit, The gas-taking end exhaust gas flow of kneading exhaust purification unit acquires the gas-taking end exhaust gas flow of sensor, calciner emission clean unit Acquisition sensor, roaster exhaust purification unit gas-taking end exhaust gas flow acquisition sensor, ingredient exhaust purification unit take Gas end exhaust gas oxygen content acquires sensor, the gas-taking end exhaust gas oxygen content of kneading exhaust purification unit acquires sensor, calcining furnace The gas-taking end exhaust gas oxygen content of exhaust purification unit acquires the gas-taking end exhaust gas oxygen content of sensor, roaster exhaust purification unit Acquire sensor, booster fan, automatic regulating valve and combustion-supporting gas mixing arrangement；The flue connects system, comprising: air into Gas end air mass flow acquires sensor, air preheat control unit；It is net in the ingredient exhaust purification unit, kneading exhaust purification unit, calciner emission clean unit and roasting furnace exhaust Gas-taking end exhaust gas oxygen content acquisition sensor, the kneading exhaust gas that ingredient exhaust purification unit is respectively set in the gas-taking end of change unit are net The gas-taking end exhaust gas oxygen content of the gas-taking end exhaust gas oxygen content acquisition sensor, calciner emission clean unit of changing unit, which acquires, to be passed Sensor, roaster exhaust purification unit gas-taking end exhaust gas oxygen content acquisition sensor, ingredient exhaust purification unit gas-taking end Exhaust gas flow acquires sensor, the gas-taking end exhaust gas flow acquisition sensor of kneading exhaust purification unit, calciner emission purification The gas-taking end exhaust gas flow of unit acquires sensor, the gas-taking end exhaust gas flow of roaster exhaust purification unit acquires sensor, The booster fan and the automatic regulating valve；The inlet end setting air inlet end air mass flow of the air acquires sensing Device；Compensated with air unit is set in the flue connection system, it is empty that air inlet end is set on the compensated with air unit Throughput acquires sensor, and the inlet end of the compensated with air unit is passed through air, the exhaust end of the compensated with air unit with Flue connects the inlet end connection of system；The gas-taking end exhaust gas oxygen content of the ingredient exhaust purification unit acquires the gas-taking end of sensor, kneading exhaust purification unit Exhaust gas oxygen content acquires sensor, gas-taking end exhaust gas oxygen content acquisition sensor, the roaster of calciner emission clean unit give up The gas-taking end exhaust gas oxygen content acquisition sensor of gas clean unit is oxygen-containing to the gas-taking end exhaust gas of ingredient exhaust purification unit respectively Amount, the gas-taking end exhaust gas oxygen content of kneading exhaust purification unit, the gas-taking end exhaust gas oxygen content of calciner emission clean unit, roasting The gas-taking end exhaust gas oxygen content for burning furnace exhaust clean unit is acquired；The ingredient exhaust purification unit gas-taking end exhaust gas flow Acquisition sensor, kneading exhaust purification unit gas-taking end exhaust gas flow acquisition sensor, calciner emission clean unit take The gas-taking end exhaust gas flow of gas end exhaust gas flow acquisition sensor and roaster exhaust purification unit acquires sensor respectively to matching Expect exhaust purification unit gas-taking end exhaust gas flow, the gas-taking end exhaust gas flow of kneading exhaust purification unit, calciner emission purification The gas-taking end exhaust gas flow of unit is acquired with the gas-taking end exhaust gas flow of roaster exhaust purification unit；The air inlet End air mass flow acquisition sensor is acquired air inlet end air mass flow；The air preheat control unit is to the sky Gas inlet end air carries out being heated to minimum temperature；Ingredient exhaust purification unit, kneading exhaust purification unit, calciner emission are net Change unit roaster exhaust purification unit acquisition after each mixed oxygen content of pipeline gas-taking end exhaust gas by adjusting it is described from Dynamic regulating valve is adjusted with booster fan parameter, makes each pipeline exhaust gas by adjusting exhaust gas flow described in the preceding each pipeline of mixing Mixed temperature reaches the mixed minimum temperature of exhaust gas and reaches setting oxygen interval value, and each pipeline exhaust gas needs to protect Temperature；The combustion-supporting gas mixing arrangement is set before the inlet end of flue connection system, the carbon exhaust gas is net The gas-taking end of ingredient exhaust purification unit, the gas-taking end of kneading exhaust purification unit, the calciner emission changed in processing system are net Change the gas-taking end of unit, the input terminal of the gas-taking end and the combustion-supporting gas mixing arrangement of roaster exhaust purification unit leads to respectively Gas piping connection is crossed, adds the automatic regulating valve and the booster fan on each section of pipeline；The combustion-supporting gas mixing dress The output end set connect the inlet end connection of system with the flue, the discharge end of flue connection system and boiler it is combustion-supporting The connection of gas inlet end；Combustion-supporting gas discharge end is connected to boiler inlet end, the combustion-supporting gas is inputted in the burner hearth of boiler, Carry out full combustion；If the gas-taking end exhaust gas of ingredient exhaust purification unit part, the gas-taking end exhaust gas of kneading exhaust purification unit part, calcining Reach most after the gas-taking end exhaust gas of furnace exhaust clean unit part, the gas-taking end exhaust gas mixing of roaster exhaust purification unit part Low temperature is re-introduced into the air for being preheating to certain temperature, after mixing with air, reaches setting oxygen interval value, then after mixing Ingredient exhaust purification unit, kneading exhaust purification unit, calciner emission clean unit, roaster exhaust purification unit portion Divide gas-taking end exhaust gas, then mixed with the air after preheating, collectively as combustion-supporting gas.
- The Zero discharging system 3. a kind of carbon industry exhausted air quantity according to claim 2 and pollutant become, further includes: boiler is useless Gas purification system；The boiler waste gas purification system, including, dust-extraction unit, desulfurizer and low-level (stack-gas) economizer；The low temperature saves Coal device is arranged before dust-extraction unit, when so that gases entering dust-extraction unit, guarantees normal working temperature；The desulfurization dress It installs after dust-extraction unit, the gases after handling boiler combustion.
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| JPH0668369B2 (en) * | 1986-06-25 | 1994-08-31 | 川崎重工業株式会社 | Carbon black manufacturing equipment Tail gas combustion method |
| JP2005221150A (en) * | 2004-02-05 | 2005-08-18 | Bussan Nanotech Research Institute Inc | Waste gas treatment device for carbon fiber manufacturing device by vapor-phase method |
| CN102755821A (en) * | 2011-04-29 | 2012-10-31 | 淄博联兴炭素有限公司 | Carbon calcining furnace waste gas desulfurizing and dust-removing method and device |
| CN202277769U (en) * | 2011-10-16 | 2012-06-20 | 长沙达树环保工程有限公司 | Improved carbon production waste gas treatment device |
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