CN106189379A - A kind of white carbon black removes the method for PAHs - Google Patents
A kind of white carbon black removes the method for PAHs Download PDFInfo
- Publication number
- CN106189379A CN106189379A CN201610665006.XA CN201610665006A CN106189379A CN 106189379 A CN106189379 A CN 106189379A CN 201610665006 A CN201610665006 A CN 201610665006A CN 106189379 A CN106189379 A CN 106189379A
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- China
- Prior art keywords
- carbon black
- white carbon
- pahs
- slideway
- low temperature
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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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
A kind of white carbon black removes the method for PAHs, relates to a kind of white carbon black decontamination technology, including following step, step A, white carbon black is carried out processed；Step B, is placed into white carbon black on the slideway of inclination and allows its natural landing, slideway carries out left and right vibrations simultaneously, allows carbon black dispersion.Step C, white carbon black is allowed to drop to the plasma generation chamber in low temperature plasma generating device from slideway, between positive/negative plate, elapsed time is no less than 1S in plasma generation chamber for white carbon black, and the low temperature plasma produced between positive/negative plate allows the polycyclic aromatic hydrocarbon generation reduction reaction being attached to carbon blacksurface generate carbon dioxide and steam.Step D, white carbon black enters cooling chamber cooling.Step E, carries out the white carbon black cooled down weighing encapsulation.Compared with prior art, the present invention can effectively remove the polycyclic aromatic hydrocarbon being attached on white carbon black so that carbon black feed stock asepsis environment-protecting, solves white carbon black and distributes polycyclic aromatic hydrocarbons contaminated environment and the problem of harm workers ' health as raw material in process of production.
Description
Technical field
The present invention relates to a kind of white carbon black decontamination technology, particularly relate to a kind of method that white carbon black takes off PAHs.
Background technology
White carbon black is a kind of light, loose and superfine black powder being mainly composed of amorphous carbon, and surface area is very big, scope
From 10-3000m2/g, be Organic substance (natural gas, heavy oil, fuel oil etc.) under conditions of lack of air through imperfect combustion or
Product obtained by decomposes (has bigger adhesiveness).The application of white carbon black widely, can be made black dyes, be used for
Manufacture Chinese ink, ink, paint etc., be also used for cooking the reinforcing agent of rubber, have important effect at industrial circle.
Polycyclic aromatic hydrocarbon (PAHs) refers to a class organic compound with two or more phenyl ring.Polycyclic aromatic hydrocarbon is point
Containing the Hydrocarbon of two or more phenyl ring in son, including naphthalene, anthracene, phenanthrene, pyrene etc., more than 150 plant compound.English full name is
Polycyclic aromatic hydrocarbon, is called for short PAHs.Some polycyclic aromatic hydrocarbon is possibly together with nitrogen, sulfur and Pentamethylene., common
Polycyclic aromatic hydrocarbon there is the polycyclic aromatic hydrocarbon of carcinogenesis mostly be the fused ring compound of four to six rings.International cancer research center (IARC)
94 kinds of compounds carcinogenic to laboratory animal that (1976) list, wherein 15 kinds belong to polycyclic aromatic hydrocarbon.Polycyclic aromatic hydrocarbon (PAHs)
It is the most serious a kind of pollutant.
In the production process of white carbon black, polycyclic aromatic hydrocarbon (PAHs) the inevasible generation of meeting, the most again because of white carbon black itself
Having adhesiveness, PAHs can be attached on white carbon black, general physics clean filtering method cannot PAHs on fully erased white carbon black,
Make still to have on carbon black products pollutant, do not simply fail to be verified by external environmental protection, also can be to workman in actual production
Damage.
Summary of the invention
The present invention is directed to deficiency of the prior art, it is provided that a kind of white carbon black removes the method for PAHs, it is possible to effectively remove
The polycyclic aromatic hydrocarbon (PAHs) being attached on white carbon black so that carbon black feed stock asepsis environment-protecting, solves white carbon black and is producing as raw material
During distribute polycyclic aromatic hydrocarbon (PAHs) pollute environment and harm workers ' health problem.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals, and a kind of white carbon black removes PAHs
Method, including following step, step A): white carbon black is carried out processed so that the moisture content of described white carbon black is less than
2%；Step B): described white carbon black being placed on the slideway of inclination and allows its natural landing, the gradient of described slideway is at 30 ° to 45 °
Between, described slideway is carried out left and right vibrations simultaneously, allows described carbon black dispersion；Step C): allow described white carbon black from described
Slideway on drop to the plasma generation chamber in low temperature plasma generating device, described plasma generation chamber temperature controls
Between 150 DEG C to 250 DEG C, being provided with vibratile separation film in described plasma generation chamber, the described separation film back side is arranged
Having getter device, between positive/negative plate, elapsed time is no less than 1S in described plasma generation chamber for described white carbon black, positive and negative
The low temperature plasma produced between pole plate allows the polycyclic aromatic hydrocarbon generation reduction reaction being attached to described carbon blacksurface generate dioxy
Changing carbon and water, wherein carbon dioxide and steam are discharged by ventilated membrane；Step D): described white carbon black is from low temperature plasma generating device
Entering cooling chamber cooling after interior discharge, described white carbon black is cooled to not higher than 30 DEG C；Step E): the described white carbon black cooled down is entered
Row weighs encapsulation.
In technique scheme, it is preferred that in described step C, described white carbon black process between positive/negative plate
Time is 3S, if described white carbon black single elapsed time between positive/negative plate less than 3S, then needs to re-start step B
Described white carbon black is allowed to cool down with step C until carrying out step D after reaching time requirement again.
In technique scheme, it is preferred that in step D, described white carbon black enters the heat-exchanging chamber being dried and carries out heat friendship
Changing cooling, it is the heating of ion generation chamber that the heat of exchange enters low temperature plasma generating device.
In technique scheme, it is preferred that in stepb, first being smashed by described white carbon black, white carbon black described after smashing is not
More than 50 mesh, then described white carbon black is placed on described slideway.
The industrialized production of existing white carbon black is mostly combustion oil high-temperature cracking method, during the Pintsch process of combustion oil not
Evitable can produce polycyclic aromatic hydrocarbon (PAHs), part polycyclic aromatic hydrocarbon can be decomposed reduction in remaining preparation process, but charcoal
Black itself have certain adsorptivity, and also part polycyclic aromatic hydrocarbon can be attached to the surface of white carbon black.Owing to being attached on white carbon black
Polycyclic aromatic hydrocarbon effectively can not be removed by general physical filtering method, and use chemical agent remove polycyclic aromatic hydrocarbon then can be right
White carbon black has undesirable effect, and the most existing white carbon black the most all can attachment portion polycyclic aromatic hydrocarbon.For this present invention by low
Temperature plasma technology removes the polycyclic aromatic hydrocarbon being attached on white carbon black, and its cardinal principle is to allow low temperature plasma contact black table
Face, now low temperature plasma is by the polycyclic aromatic hydrocarbon generation reduction reaction of carbon blacksurface, becomes carbon dioxide and water, in this mistake
In journey, white carbon black then will not be had any impact by low-temperature plasma so that white carbon black can perfectly 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 white carbon black so that charcoal
Black advantages of nontoxic raw materials environmental protection, solve white carbon black distribute in process of production as raw material polycyclic aromatic hydrocarbon (PAHs) pollute environment and
The problem of harm workers ' health.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
Embodiment 1: a kind of white carbon black removes the method for PAHs, including following step.Step A: white carbon black is dehydrated
Process so that the moisture content of white carbon black is less than 2%, preferred white carbon black moisture content less than 1.5% because the moisture content of white carbon black is the lowest, low temperature
Plasma is the best except polycyclic aromatic hydrocarbon effect.Step B: smashed by white carbon black, the white carbon black after smashing is not more than 50 mesh, the most again white carbon black
Being placed on the slideway of inclination and allow its natural landing, described slideway, between 30 ° to 45 °, is entered by the gradient of slideway simultaneously
Shake about row, allow carbon black dispersion.So it is disposed to allow white carbon black dispersed when declining, reduces thickness during white carbon black,
Low temperature plasma is facilitated to pass, it is to avoid part white carbon black cannot contact with low temperature plasma.Step C: allow white carbon black from slideway
Dropping to the plasma generation chamber in low temperature plasma generating device, white carbon black passes through between positive/negative plate in plasma generation chamber
Time no less than 1S.It is said that in general, white carbon black elapsed time between positive/negative plate is 3S, because gravity factor, if wanted
Then need the height of positive/negative plate to reach tens meters through 3S between positive/negative plate, white carbon black therefore can be allowed to repeat entrance etc.
Ion generation chamber, each entry time controls at about 1S, and the height of such positive/negative plate just can control about 10 meters, no
Only so that the little of whole device reduces greatly the ability the most not affecting removing polycyclic aromatic hydrocarbon (PAHs).Plasma generation chamber temperature
Control between 150 DEG C to 250 DEG C, can preferably allow polycyclic aromatic hydrocarbon (PAHs) react at this temperature section, also simultaneously
The water produced is allowed to become steam.In plasma generation chamber, it is provided with vibratile separation film, separates the film back side and be provided with suction
Device of air, takes, by getter device, carbon dioxide and the steam holding plasma that polycyclic aromatic hydrocarbon (PAHs) reduction decomposition produces away
Generation chamber dried and clean.Separating film can only allow gas pass through, and part white carbon black can be attracted on film, and separating film can vibrate for this,
Shake off to prevent white carbon black from blocking separation film the white carbon black in absorption.Step D: white carbon black is discharged laggard in low temperature plasma generating device
Entering dry heat-exchanging chamber and carry out heat exchange cooling, it is that ion generation chamber carries that the heat of exchange enters low temperature plasma generating device
For partial heat.
Low temperature plasma removes the principle of polycyclic aromatic hydrocarbon (PAHs): the low temperature plasma of corona discharge can be occurred to exist
In discharge process, electronics obtains energy from electric field, by inelastic collision, energy is converted into polycyclic aromatic hydrocarbon (PAHs) molecule
Interior energy or kinetic energy, it is thus achieved that the polycyclic aromatic hydrocarbon molecule of energy be excited or occur ionization formed active group, simultaneously dry air
Also under the effect of high energy electron, produce substantial amounts of active oxygen, hydroxyl oxygen isoreactivity group, mutually touch between these active groups
A series of complicated physics, chemical reaction is caused to be eventually converted into the material such as carbon dioxide and water after hitting.Owing to white carbon black is a kind of
Agraphitic carbon, low crystal, degree of ionization is the lowest, and low temperature plasma will not allow white carbon black react, and keeps white carbon black stable.
Claims (4)
1. the method that white carbon black removes PAHs, is characterized by include following step, step A): white carbon black is dehydrated
Process so that the moisture content of described white carbon black is less than 2%；Step B): described white carbon black is placed on the slideway of inclination and makes it naturally sliding
Falling, the gradient of described slideway, between 30 ° to 45 °, carries out left and right vibrations simultaneously, allows described white carbon black divide described slideway
Dissipate；Step C): allow described white carbon black drop to the plasma generation chamber in low temperature plasma generating device from described slideway,
Described plasma generation chamber temperature controls, between 150 DEG C to 250 DEG C, to be provided with vibratile in described plasma generation chamber
Separating film, the described separation film back side is provided with getter device, and described white carbon black is positive/negative plate in described plasma generation chamber
Between elapsed time no less than 1S, the low temperature plasma produced between positive/negative plate allows to be attached to described carbon blacksurface many
PAH generation reduction reaction generates carbon dioxide and water, and wherein carbon dioxide and steam are discharged by ventilated membrane；Step D): institute
Stating and enter cooling chamber cooling after white carbon black is discharged in low temperature plasma generating device, described white carbon black is cooled to not higher than 30 DEG C；Step
Rapid E): carry out the described white carbon black cooled down weighing encapsulation.
A kind of white carbon black the most according to claim 1 removes the method for PAHs, it is characterized by, in described step C, described
White carbon black elapsed time between positive/negative plate be 3S, if described white carbon black single elapsed time between positive/negative plate
Less than 3S, then need to re-start step B and step C and make described white carbon black cold until carrying out step D after reaching time requirement again
But.
A kind of white carbon black the most according to claim 1 removes the method for PAHs, it is characterized by, in step D, and described white carbon black
Entering the heat-exchanging chamber being dried and carry out heat exchange cooling, it is ion generation chamber that the heat of exchange enters low temperature plasma generating device
Heating.
A kind of white carbon black the most according to claim 1 removes the method for PAHs, it is characterized by, in stepb, first by described
White carbon black is smashed, and white carbon black described after smashing is not more than 50 mesh, then described white carbon black is placed on described 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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| CN201610665006.XA CN106189379B (en) | 2016-08-15 | 2016-08-15 | A kind of method of carbon black removal PAHs |
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| CN106189379B CN106189379B (en) | 2018-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN106189379B (en) | 2018-11-30 |
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