CN106189379B - A kind of method of carbon black removal PAHs - Google Patents
A kind of method of carbon black removal PAHs Download PDFInfo
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- CN106189379B CN106189379B CN201610665006.XA CN201610665006A CN106189379B CN 106189379 B CN106189379 B CN 106189379B CN 201610665006 A CN201610665006 A CN 201610665006A CN 106189379 B CN106189379 B CN 106189379B
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- carbon black
- slideway
- pahs
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- carbon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/56—Treatment of carbon black ; Purification
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/485—Preparation involving the use of a plasma or of an electric arc
Abstract
A kind of method of carbon black removal PAHs, is related to a kind of carbon black decontamination technology, including following steps, step A is carried out dehydrating carbon black；Step B is placed into carbon black on inclined slideway and it is allowed to slide naturally, while carrying out left and right vibration to slideway, allows carbon black dispersion.Step C, room occurs for the plasma for allowing carbon black fallen in low temperature plasma generating device from slideway, carbon black occurs elapsed time between indoor positive/negative plate in plasma and is no less than 1S, and the low temperature plasma generated between positive/negative plate allows the polycyclic aromatic hydrocarbon for being attached to carbon blacksurface that reduction reaction occurs and generates carbon dioxide and steam.Step D, it is cooling that carbon black enters cooling chamber.Step E carries out weighing encapsulation to the cooling carbon black completed.Compared with prior art, the present invention can effectively remove the polycyclic aromatic hydrocarbon being attached on carbon black, so that carbon black feed stock asepsis environment-protecting, solves the problems, such as carbon black as raw material and distribute polycyclic aromatic hydrocarbons contaminated environment in process of production and endanger workers ' health.
Description
Technical field
The present invention relates to a kind of methods that carbon black decontamination technology more particularly to a kind of carbon black take off PAHs.
Background technique
Carbon black is light, the loose and superfine black powder that a kind of main component is amorphous carbon, and surface area is very big, range
It is organic matter from 10-3000m2/g（Natural gas, heavy oil, fuel oil etc.）Under conditions of lack of air through imperfect combustion or
Product obtained by being thermally decomposed（With biggish adhesiveness）.The wide range of applications of carbon black can make black dyes, be used for
Chinese ink, ink, paint etc. are manufactured, is also used for cooking the reinforcing agent of rubber, has important role in industrial circle.
Polycyclic aromatic hydrocarbon (PAHs) refers to a kind of organic compound with two or more phenyl ring.Polycyclic aromatic hydrocarbon is point
More than 150 compounds such as hydrocarbon, including naphthalene, anthracene, phenanthrene, pyrene containing more than two phenyl ring in son.Full name in English is
Polycyclic aromatic hydrocarbon, abbreviation PAHs.Some polycyclic aromatic hydrocarbons also contain nitrogen, sulphur and pentamethylene, common
Polycyclic aromatic hydrocarbon have carcinogenesis polycyclic aromatic hydrocarbon be mostly four to six rings fused ring compound.International cancer research center（IARC）
（1976）94 kinds listed the compound carcinogenic to experimental animal, wherein 15 kinds belong to polycyclic aromatic hydrocarbon.Polycyclic aromatic hydrocarbon (PAHs)
It is a kind of pollutant very serious.
In the production process of carbon black, the inevasible generation of polycyclic aromatic hydrocarbon (PAHs) meeting, while again because of carbon black itself
With adhesiveness, PAHs can be attached on carbon black, general physics cleaning filter method can not PAHs on fully erased carbon black,
So that still having pollutant on carbon black products, do not simply fail to through external environmental protection verifying, it can also be in actual production to worker
It damages.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides the method for carbon black removal PAHs a kind of, can effectively remove
The polycyclic aromatic hydrocarbon (PAHs) being attached on carbon black, so that carbon black feed stock asepsis environment-protecting, solves carbon black and producing as raw material
The problem of distributing polycyclic aromatic hydrocarbon (PAHs) pollution environment in the process and endangering workers ' health.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals, a kind of carbon black removal PAHs
Method, including following steps, step A)：Carbon black is carried out dehydrating, so that the moisture content of the carbon black is lower than
2%；Step B）：The carbon black, which is placed on inclined slideway, allows it to slide naturally, and the gradient of the slideway is at 30 ° to 45 °
Between, while left and right vibration is carried out to the slideway, allows the carbon black dispersion；Step C）：Allow the carbon black from described
Slideway on fall to plasma in low temperature plasma generating device room occur, the plasma occurs room temperature control and exists
Between 150 DEG C to 250 DEG C, the plasma occurs interior and is provided with vibratile seperation film, the separation back of the membrane setting
There is getter device, the carbon black occurs elapsed time between indoor positive/negative plate in the plasma and is no less than 1S, positive and negative
The low temperature plasma generated between pole plate allows the polycyclic aromatic hydrocarbon for being attached to the carbon blacksurface that reduction reaction occurs and generates dioxy
Change carbon and water, wherein carbon dioxide and steam are discharged by ventilated membrane；Step D）：The carbon black is from low temperature plasma generating device
Enter cooling chamber cooling after interior discharge, the carbon black is cooled to not higher than 30 DEG C；Step E）：To the cooling carbon black completed into
Row weighs encapsulation.
In above-mentioned technical proposal, it is preferred that in the step C, what the carbon black passed through between positive/negative plate
Time is 3S, if carbon black single elapsed time between positive/negative plate needs to re-start step B less than 3S
Make the carbon black cooling until carrying out step D after reaching time requirement again with step C.
In above-mentioned technical proposal, it is preferred that in step D, the carbon black enters dry heat-exchanging chamber and carries out hot friendship
Cooling is changed, it is that room heating occurs for ion that the heat of exchange, which enters low temperature plasma generating device,.
In above-mentioned technical proposal, it is preferred that in stepb, first smash the carbon black, smash the rear carbon black not
Greater than 50 mesh, then the carbon black is placed on the slideway.
The industrialized production of existing carbon black is mostly combustion oil high-temperature cracking method, during the Pintsch process of combustion oil not
Evitable to generate polycyclic aromatic hydrocarbon (PAHs), part polycyclic aromatic hydrocarbon can be decomposed reduction in remaining preparation process, but charcoal
Black itself to have certain adsorptivity, there are also the surfaces that part polycyclic aromatic hydrocarbon can be attached to carbon black.Due to being attached on carbon black
Polycyclic aromatic hydrocarbon can not effectively be removed with general physical filtering method, and then can be right using chemical agent removal polycyclic aromatic hydrocarbon
Carbon black causes adverse effect, therefore existing carbon black more or less all can attachment portion polycyclic aromatic hydrocarbon.The present invention passes through low thus
Warm plasma technology removes the polycyclic aromatic hydrocarbon being attached on carbon black, and cardinal principle is to allow low temperature plasma contact black table
Face, by the polycyclic aromatic hydrocarbon of carbon blacksurface reduction reaction occurs for low temperature plasma at this time, becomes carbon dioxide and water, in this mistake
Low-temperature plasma will not then have any impact to carbon black in journey, and carbon black is allowed perfectly to remove polycyclic aromatic hydrocarbon (PAHs),
Meet the requirement of environmental protection.
Compared with prior art, the present invention can effectively remove the polycyclic aromatic hydrocarbon (PAHs) being attached on carbon black, so that charcoal
The environmental protection of black advantages of nontoxic raw materials, solve carbon black as raw material and distribute in process of production polycyclic aromatic hydrocarbon (PAHs) pollute environment and
The problem of endangering workers ' health.
Specific embodiment
Present invention is further described in detail With reference to embodiment.
Embodiment 1：A kind of method of carbon black removal PAHs, including following steps.Step A：Carbon black is dehydrated
Processing, so that the moisture content of carbon black is lower than 2%, moisture content of the preferred carbon black moisture content lower than 1.5% because of carbon black is lower, low temperature
Plasma is better except polycyclic aromatic hydrocarbon effect.Step B：Carbon black is smashed, the carbon black after smashing is not more than 50 mesh, then again carbon black
Being placed on inclined slideway allows it to slide naturally, the gradient of slideway between 30 ° to 45 °, while to the slideway into
The vibration of row left and right, allows carbon black dispersion.It is evenly dispersed when setting is in order to allow carbon black to decline in this way, thickness when carbon black is reduced,
Facilitate low temperature plasma to pass through, avoids part carbon black that from can not contacting with low temperature plasma.Step C：Allow carbon black from slideway
Room occurs for the plasma fallen in low temperature plasma generating device, and carbon black occurs to pass through between indoor positive/negative plate in plasma
Time be no less than 1S.In general, carbon black elapsed time between positive/negative plate is 3S, because of gravity factor, if wanted
It then needs the height of positive/negative plate to reach tens meters by 3S between positive/negative plate, therefore carbon black can be allowed to repeat entrance etc.
Room occurs for ion, and in 1S or so, the height of such positive/negative plate can be controlled about 10 meters, no for each entry time control
The small big diminution of whole device, which can only be made, not to be influenced also to remove the ability of polycyclic aromatic hydrocarbon (PAHs).Room temperature occurs for plasma
Control can preferably allow polycyclic aromatic hydrocarbon (PAHs) to react between 150 DEG C to 250 DEG C in this temperature section, simultaneously also
The water of generation is allowed to become vapor.Interior occurs in plasma and is provided with vibratile seperation film, separation back of the membrane is provided with suction
Device of air takes the carbon dioxide of polycyclic aromatic hydrocarbon (PAHs) reduction decomposition generation away by getter device and vapor keeps plasma
Room dried and clean occurs.Seperation film can only allow gas to pass through, and part charcoal clandestine meeting is attracted on film, and seperation film can be vibrated thus,
Shake off to prevent carbon black from blocking seperation film appended carbon black is inhaled.Step D：Carbon black is discharged laggard out of low temperature plasma generating device
Enter dry heat-exchanging chamber and carry out heat exchange cooling, it is that ion generation room mentions that the heat of exchange, which enters low temperature plasma generating device,
For partial heat.
Low temperature plasma removal polycyclic aromatic hydrocarbon (PAHs) principle be：The low temperature plasma that corona discharge can occur exists
In discharge process, electronics obtains energy from electric field, converts polycyclic aromatic hydrocarbon (PAHs) molecule for energy by inelastic collision
It is interior can or kinetic energy, the polycyclic aromatic hydrocarbon molecule for obtaining energy be excited or occurs ionize forms active group, while dry air
Also a large amount of active oxygen is generated under the action of high energy electron, hydroxyl oxygen isoreactivity group mutually touches between these active groups
Cause a series of complicated physics after hitting, chemical reaction is eventually converted into the substances such as carbon dioxide and water.Since carbon black is a kind of
Agraphitic carbon, low crystal, degree of ionization is very low, and low temperature plasma will not allow carbon black to react, and carbon black is kept to stablize.
Claims (4)
1. a kind of method of carbon black removal PAHs, it is characterized in that including following steps, step A)：Carbon black is dehydrated
Processing, so that the moisture content of the carbon black is lower than 2%；Step B）：The carbon black is placed on inclined slideway and makes it naturally sliding
It falls, the gradient of the slideway carries out left and right vibration between 30 ° to 45 °, while to the slideway, and the carbon black is allowed to divide
It dissipates；Step C）：Room occurs for the plasma for allowing the carbon black fallen in low temperature plasma generating device from the slideway,
The plasma occurs room temperature and controls between 150 DEG C to 250 DEG C, and plasma generation interior is provided with vibratile
Seperation film, the separation back of the membrane are provided with getter device, and in the plasma indoor positive/negative plate occurs for the carbon black
Between elapsed time be no less than 1S, the low temperature plasma generated between positive/negative plate, which allows, is attached to the more of the carbon blacksurface
Cycloaromatics occurs reduction reaction and generates carbon dioxide and water, and wherein carbon dioxide and steam are discharged by seperation film；Step D）：Institute
It states and enters cooling chamber cooling after carbon black is discharged out of low temperature plasma generating device, the carbon black is cooled to not higher than 30 DEG C；Step
Rapid E）：Weighing encapsulation is carried out to the cooling carbon black completed.
2. the method for carbon black removal PAHs according to claim 1 a kind of, it is characterized in that, it is described in the step C
Carbon black between positive/negative plate elapsed time be 3S, if carbon black single elapsed time between positive/negative plate
Less than 3S, then step D is carried out again after needing to re-start step B and step C until reaching time requirement and makes the carbon black cold
But.
3. the method for carbon black removal PAHs according to claim 1 a kind of, it is characterized in that, in step D, the carbon black
Heat exchange cooling is carried out into dry heat-exchanging chamber, it is that room occurs for ion that the heat of exchange, which enters low temperature plasma generating device,
Heating.
4. the method for carbon black removal PAHs according to claim 1 a kind of, it is characterized in that, it in stepb, first will be described
Carbon black is smashed, and is smashed the rear carbon black no more than 50 mesh, then the carbon black is placed on the slideway.
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| CN201610665006.XA CN106189379B (en) | 2016-08-15 | 2016-08-15 | A kind of method of carbon black removal PAHs |
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| CN106189379B true CN106189379B (en) | 2018-11-30 |
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| CN108774415A (en) * | 2018-07-20 | 2018-11-09 | 宁波德泰化学有限公司 | A kind of manufacturing method of energy conservation and environmental protection carbon black |
| CN110157089A (en) * | 2019-06-06 | 2019-08-23 | 东莞市恒彩塑胶颜料有限公司 | A kind of black agglomerate and its preparation method and application for food grade plastic product |
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| JPS592711B2 (en) * | 1981-03-28 | 1984-01-20 | 学校法人 近畿大学 | Manufacturing method of modified carbon black |
| HUE047343T2 (en) * | 2006-11-07 | 2020-04-28 | Cabot Corp | Carbon blacks having low pah amounts and methods of making same |
| CN101239269A (en) * | 2007-11-21 | 2008-08-13 | 中山大学 | Rotating electric-discharging low temperature plasma organic waste gases purifying device |
| CN201154290Y (en) * | 2007-11-21 | 2008-11-26 | 中山大学 | Rotary discharging non-thermal plasma cleaning equipment for waste organic gas |
| WO2011103015A2 (en) * | 2010-02-19 | 2011-08-25 | Cabot Corporation | Methods for carbon black production using preheated feedstock and apparatus for same |
| CN102059047B (en) * | 2010-11-17 | 2012-12-19 | 北京航空航天大学 | Method and device for treating nondegradable organic waste gas by combining low-temperature plasma with organisms |
| CN102618095B (en) * | 2012-03-07 | 2013-09-25 | 无锡双诚炭黑有限公司 | Production method of environmentally-friendly carbon black |
| CN203281600U (en) * | 2013-04-28 | 2013-11-13 | 中国科学院南京土壤研究所 | Low-temperature plasma processing device for soil persistent organic pollutants |
| CN103272839B (en) * | 2013-04-28 | 2014-12-24 | 中国科学院南京土壤研究所 | Low-temperature plasma processing device and method for persistent organic pollutants in soil |
| CN104672954B (en) * | 2015-02-10 | 2017-06-06 | 安徽黑钰颜料新材料有限公司 | Low polycyclic aromatic hydrocarbon content furnace black production method and colour carbon black product |
| CN104725899B (en) * | 2015-02-10 | 2017-06-06 | 安徽黑钰颜料新材料有限公司 | The production method and its carbon black products of Environmental Safety black |
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