CN102492316B - Method and equipment for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion - Google Patents
Method and equipment for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion Download PDFInfo
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- CN102492316B CN102492316B CN2011104184566A CN201110418456A CN102492316B CN 102492316 B CN102492316 B CN 102492316B CN 2011104184566 A CN2011104184566 A CN 2011104184566A CN 201110418456 A CN201110418456 A CN 201110418456A CN 102492316 B CN102492316 B CN 102492316B
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Abstract
The invention discloses a method for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion, which includes the steps of leading carbon black into a combustion section of a carbon black reacting furnace; leading oxygen-enriched air with 40%-75% of oxygen volume while dehumidified and preheated carbon black off-gas is generated during production; combusting the carbon black off-gas in an oxygen debt working condition; and enabling generated reducible high-temperature combustion gas to enter a reacting section of the carbon black reacting furnace via a throat pipe section of the carbon black reacting furnace, so that raw oil entering the reacting section of the carbon black reacting furnace via the throat pipe section of the carbon black reacting furnace is generated into the carbon black by means of cracking. By the aid of the method, carbon black yield of the carbon black reacting furnace is greatly increased, carbon black output is increased, oil consumption is reduced, off-gas emission is reduced, and energy conservation, effect-enhancement and emission reduction effects are quite remarkable. The invention further provides equipment for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion.
Description
Technical field:
The invention belongs to the off-colour industry production technical field, say definitely it is that a kind of black reactor tail gas is with oxygenized air combustion supporting, circulating combustion is produced the method and apparatus of carbon black under oxygen debt operating mode.
Prior art:
Existing method of producing black pigment adopts always sends into oil fuel and through the combustion air generation combustion reactions of preheating, the high-temp combustion gas high speed shaft of generation is to the conversion zone that enters Reaktionsofen by the trunnion section at burning zone rear portion in the burning zone of black reactor; Meanwhile, stock oil radially sprays into from the trunnion middle part, sends into cracking generation carbon black in the conversion zone after being torn, heat by the high temperature and high speed burning gas of axially passing through.Because the amount of oxygen of sending in the burning zone combustion air is far longer than the required amount of oxygen of oil fuel perfect combustion (surplus air ties up between 1.6～2.3), so there is a large amount of oxygen to exist in high-temp combustion gas, high-temp combustion gas belongs to oxidisability gas part.After a large amount of oxygen is brought into conversion zone, make fierce, complicated redox reaction occurs in the conversion zone, and association goes out a large amount of inflammable gass and is mixed in the burning gas.The carbon black that generates and the gas mixture that contains inflammable gas together, by entering bag filter behind the various heat-energy recovering apparatus recovery part heat energy, carbon black and gas mixture (tail gas) are separated, isolated carbon black enters stockyard after granulation, drying, packing; Tail gas generally is admitted to the boiler house and makes fuel, produces steam-electric power or direct heating.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide a kind of with low-calorie black reactor tail gas with oxygenized air combustion supporting, under oxygen debt operating mode, burn, generation is equivalent to the combustion efficacy of high performance fuel, substitute the fuel such as burning high heating value oil or natural gas and produce carbon black, reach simultaneously and improve the black reactor carbon yield, increase carbon black output, reduce oil consumption, reduce exhaust emissions, the oxygenized air combustion supporting carbon black tail gas of realizing energy-conservation, synergy, the reduction of discharging oxygen debt burning production carbon black method that circulates.Another object of the present invention is in order to provide the circulate oxygen debt burning of a kind of oxygenized air combustion supporting carbon black tail gas to produce carbon black equipment.
The object of the present invention is achieved like this:
The carbon black method is produced in circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas of the present invention, the method be in the black reactor burning zone, pass into produce in the carbon black process through dehumidification, pass into a part of oxygen volume percentage composition in the time of the carbon black tail gas of preheating and be 40%～75% oxygenized air combustion supporting, allow carbon black tail gas under oxygen debt operating mode, burn, the combustible gas that oxygen has consumed in the rear tail gas also has superfluous, so products of combustion belongs to the high-temp combustion gas of reductibility gas part, the reductibility high-temp combustion gas that produces enters in the black reactor conversion zone through black reactor trunnion section, make the stock oil cracking generation carbon black and the gas mixture that contains inflammable gas that enter the black reactor conversion zone through black reactor trunnion section, the carbon black that generates is isolated carbon black and mixed tail gas by bag filter together with the gas mixture that contains inflammable gas behind various heat-energy recovering apparatus recovery part heat energy, most of mixed tail gas is through dehumidification, carbon black tail gas after the preheating passes in the black reactor burning zone again.
In the above-mentioned method in the carbon black tail gas of dehumidification, preheating water vapour volume percentage composition≤5%, preheating temperature be 400～600 ℃, the oxygen debt degree of oxygen debt operating mode is 10%～45%.
Before or after black reactor trunnion section and conversion zone interface, also pass into another part oxygen volume percentage composition in the above-mentioned method to conversion zone and be 40%～75% oxygen-rich air for conversion zone in fierce, complicated redox reaction, for the processing condition of stablize stock oil cracking generation carbon black provide heat.
The oxygen-rich air volume percentage of sending into black reactor burning zone and conversion zone in the above-mentioned method is 40%～65%: 60%～35%.
Carbon black equipment is produced in circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas of the present invention, include the burning zone that is communicated with successively, the trunnion section, the black reactor of conversion zone, air preheater, the fuel oil preheating device, the bag filter that is communicated with the fuel oil preheating device, be provided with the recycled offgas preheater in the described equipment, high density oxygen-rich air and/or oxygen inlet are arranged, the preheated air import that is communicated with the outlet of air preheater preheated air and the oxygen-rich air mixing device that mixes rear oxygen-rich air outlet, respectively by pipeline and the outlet of bag filter tail gas, the dewatering unit that the import of recycled offgas preheater recycled offgas is communicated with, the oxygen-rich air import and the in advance hot exhaust gas import that are communicated with by oxygen-rich air outlet after mixing in pipeline and the oxygen-rich air mixing device and the pre-hot exhaust gas outlet of recycled offgas preheater are arranged on the black reactor burning zone respectively, and black reactor trunnion section is communicated with fuel oil preheating device preheating material oil export by pipeline.
Above-mentioned black reactor trunnion section is mixed rear oxygen-rich air outlet by pipeline and oxygen-rich air mixing device and is connected before or after the conversion zone interface.
The inventive method and equipment are with low-calorie black reactor tail gas, with oxygenized air combustion supporting, under oxygen debt operating mode, burn, generation is equivalent to the combustion efficacy of high performance fuel, substitute the fuel such as burning high heating value oil or natural gas and produce carbon black, greatly improve simultaneously the black reactor carbon yield, increase carbon black output, reduce oil consumption, reduce exhaust emissions (quantity discharged reduces more than 60%), energy-conservation, synergy, emission reduction effect are very remarkable.
Description of drawings:
Fig. 1 is the present device structural representation.
Embodiment:
Referring to Fig. 1, carbon black equipment is produced in the circulate oxygen debt burning of present embodiment oxygenized air combustion supporting carbon black tail gas, include the burning zone 1 that is communicated with successively, trunnion section 2, the black reactor of conversion zone 3, the air preheater 4 that is communicated with conversion zone mixed gas outlet in the black reactor by pipeline and the recycled offgas preheater 5 that is communicated with air preheater by pipeline and the fuel oil preheating device 6 that is communicated with the recycled offgas preheater by pipeline, the bag filter 7 that is communicated with the fuel oil preheating device by pipeline, high density oxygen-rich air and/or oxygen inlet 8-1 are arranged, is communicated with air preheater preheated air outlet 4-1 preheated air import 8-2 and mix after the oxygen-rich air mixing device 8 of oxygen-rich air outlet 8-3, export 7-1 by pipeline and the bag filter tail gas that controller is arranged respectively, the dewatering unit 9 that recycled offgas preheater recycled offgas import 5-1 is communicated with.On the connecting tube tail gas topping-up pump 10 is housed between dewatering unit and recycled offgas preheater.Have on the black reactor burning zone respectively by oxygen-rich air outlet 8-3 and pre-hot exhaust gas outlet 5-2 oxygen-rich air imports that are communicated with 1-1 of recycled offgas preheater and in advance hot exhaust gas import 1-2 after mixing in pipeline and the oxygen-rich air mixing device.Black reactor trunnion segment interface 2-1 is communicated with fuel oil preheating device preheating material oil export 6-1 by pipeline.
(and/or rear) pipeline by control valve is arranged and oxygen-rich air mixings device mix afterwards oxygen-rich air and export and be connected before black reactor trunnion section and the conversion zone interface.
The method that present embodiment is produced carbon black is in the burning zone 1 of black reactor, send into and produce in the carbon black process, through dewatering unit 9 dehumidifications (vapour content≤5%), the carbon black tail gas of recycled offgas preheater 5 preheatings (500 ℃ of preheating temperatures), sending into simultaneously a part is 50% through the mixed oxygen concn of oxygen-rich air mixing device, temperature is 400 ℃ oxygenized air combustion supporting, and the amount (account for oxygen-rich air total amount 58%) of oxygen-rich air is sent in strict control, its amount of oxygen that contains is less than the required amount of oxygen of inflammable gas perfect combustion in the tail gas of sending into burning zone 1, and its oxygen debt degree is 25.5%.This moment, carbon black tail gas burnt under oxygen debt operating mode, the inflammable gas that oxygen has consumed in the rear carbon black tail gas also has superfluous, so products of combustion belongs to the high-temp combustion gas of reductibility gas part, high-temp combustion gas high speed shaft enters the conversion zone 3 of Reaktionsofen to the trunnion section 2 by the burning zone rear portion; Meanwhile, stock oil radially sprays into from trunnion section 2 middle parts on the one hand, sends into conversion zone 3 interior cracking after being torn, heat by the high temperature and high speed burning gas of axially passing through and generates carbon black; On the other hand, another part oxygen-rich air (account for oxygen-rich air total amount 42%) is sent into conversion zone 3 from trunnion section 2 and conversion zone 3 interfaces front (and/or rear), make fierce, the complicated redox reaction of conversion zone 3 interior generations, the processing condition that generate carbon black for stablizing the stock oil cracking provide heat, and association goes out a large amount of inflammable gass and is mixed in the burning gas, the carbon black that generates and the gas mixture that contains incendivity gas together, by entering bag filter 7 behind various energy recovery preheaters 4,5, the 6 recovery part heat energy.Carbon black, gas mixture (tail gas) are separated by bag filter, and isolated carbon black enters stockyard after granulation, drying, packing; The isolated carbon black tail gas of the overwhelming majority is after dewatering unit 9 dehumidifications reach vapour content in the tail gas≤5%, be preheating to 500 ℃ by 10 superchargings of tail gas topping-up pump and through recycled offgas preheater 5, again be sent back in the burning zone 1 of black reactor again with oxygenized air combustion supporting, carbon black is produced in burning under oxygen debt operating mode; Another small portion tail gas is discharged carbon black production system outward for it without dehumidification.
Transform original 5000t/a conventional carbon black Reaktionsofen as black reactor of the present invention, at fuel consumption amount, manufacturing condition (temperature, flow velocity, volume, heat content ...) all produce carbon black under the identical or close condition, each physical quantity in both technological processs and physical parameter contrast are expressed as follows (see Table 1, table 2).
Table 1:
Table 2:
From table 1, table 2, can find out, in the identical situation of oil consumption, adopt the inventive method and equipment can greatly reduce the exhaust emissions amount, improve carbon yield, improve charcoal volume production amount.
Above-described embodiment is that foregoing of the present invention is further described, but this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to above-described embodiment.All technology that realizes based on foregoing all belong to scope of the present invention.
Claims (4)
1. the carbon black method is produced in the circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas, the method be in the black reactor burning zone, pass into produce in the carbon black process through dehumidification, pass into a part of oxygen volume percentage composition in the time of the carbon black tail gas of preheating and be 40%～75% oxygenized air combustion supporting, allow carbon black tail gas under oxygen debt operating mode, burn, the reductibility high-temp combustion gas that produces enters in the black reactor conversion zone through black reactor trunnion section, make the stock oil cracking generation carbon black and the gas mixture that contains inflammable gas that enter the black reactor conversion zone through black reactor trunnion section, the carbon black that generates is isolated carbon black and mixed tail gas by bag filter together with the gas mixture that contains inflammable gas behind various heat-energy recovering apparatus recovery part heat energy, most of mixed tail gas is through dehumidification, carbon black tail gas after the preheating passes in the black reactor burning zone again, and the oxygen debt degree of oxygen debt operating mode is 10%～45%.
2. the carbon black method is produced in circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas according to claim 1, it is characterized in that water vapour volume percentage composition≤5%, preheating temperature are 400～600 ℃ in the carbon black tail gas of dehumidification, preheating.
3. the carbon black method is produced in circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas according to claim 1 and 2, it is characterized in that before or after black reactor trunnion section and conversion zone interface passing into to conversion zone another part oxygen volume percentage composition and be 40%～75% oxygen-rich air for conversion zone in fierceness, complicated redox reaction.
4. the carbon black method is produced in circulate oxygen debt burning of oxygenized air combustion supporting carbon black tail gas according to claim 3, and the oxygen-rich air amount volume percentage that it is characterized in that sending into black reactor burning zone and conversion zone is 40%～65%: 60%～35%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104184566A CN102492316B (en) | 2011-12-15 | 2011-12-15 | Method and equipment for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104184566A CN102492316B (en) | 2011-12-15 | 2011-12-15 | Method and equipment for producing carbon black with carbon black off-gas by means of supporting combustion of oxygen-enriched air and circulating oxygen debt combustion |
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| CN102492316A CN102492316A (en) | 2012-06-13 |
| CN102492316B true CN102492316B (en) | 2013-05-29 |
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| CN104513501B (en) * | 2014-12-23 | 2016-08-17 | 中橡集团炭黑工业研究设计院 | The processing method of a kind of carbon black tail gas and carbon black production system |
| CN108659579A (en) * | 2018-07-20 | 2018-10-16 | 宁波德泰化学有限公司 | A kind of manufacturing method of environmentally-friecarbon carbon black |
| CN109294285A (en) * | 2018-11-28 | 2019-02-01 | 山东科思姆特种材料技术开发有限公司 | A kind of conduction method of producing black pigment |
| CN112876883B (en) * | 2021-01-22 | 2022-04-08 | 丰城黑豹炭黑有限公司 | Equipment for producing carbon black by air combustion-supporting carbon black tail gas circulation oxygen-deficient combustion |
| CN113480876A (en) * | 2021-06-30 | 2021-10-08 | 丰城黑豹炭黑有限公司 | Chemical fiber coloring carbon black and preparation method thereof |
| CN116875083B (en) * | 2023-09-08 | 2023-11-17 | 山西安仑化工有限公司 | Layered combustion carbon black reaction equipment |
| CN117285031B (en) * | 2023-11-24 | 2024-01-30 | 烁元新材料(东营)股份有限公司 | Device for manufacturing carbon nanomaterial by utilizing carbon black tail gas |
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| CN101915428A (en) * | 2010-08-23 | 2010-12-15 | 张云斌 | Energy-saving device and method for producing hard carbon black |
| CN102174277B (en) * | 2011-03-11 | 2013-03-20 | 山西永东化工股份有限公司 | Method for producing superconducting carbon black with high specific surface area |
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