CN112011197A - Non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content and production method thereof - Google Patents
Non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content and production method thereof Download PDFInfo
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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
- C09C1/50—Furnace black ; Preparation thereof
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- 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
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- C—CHEMISTRY; METALLURGY
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
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Abstract
The invention discloses a non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content and a production method thereof. The carbon black product consists of raw oil and carrier gas, wherein the raw oil is anthracene oil, the carrier gas is coke oven gas, and the weight ratio of the raw oil to the carrier gas is as follows: 360-400: 180-300; the production process belongs to a mixed gas non-groove carbon black production process in a contact method, and the product produced by the process is pigment carbon black with low polycyclic aromatic hydrocarbon content, and the lowest polycyclic aromatic hydrocarbon content can reach within 5 ppm. The product has the advantages of common pigment carbon black and has the requirement of environmental protection.
Description
Technical Field
The invention relates to a non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content and a production method thereof, belonging to the technical field of environment-friendly carbon black products and production thereof.
Background
Pigment carbon black is a generic term including carbon black products for various applications, and is defined as: the carbon black is black powder with high dispersibility obtained by cracking and incomplete combustion of hydrocarbons (liquid, solid and gaseous hydrocarbons), and is mainly generated by insufficient combustion of coke oven gas and anthracene oil or coal tar, and the anthracene oil and the coal tar have complex components and high content of polycyclic aromatic hydrocarbon, so that the polycyclic aromatic hydrocarbon content in the components of the produced carbon black product is high. The production process of carbon black includes two main types of oil furnace method and contact method, and each type of carbon black has different carbon black with high content of polycyclic aromatic hydrocarbon. The high polycyclic aromatic hydrocarbon content can not meet the requirements of various fields with strict environmental protection requirements, such as food and human body contact.
Polycyclic Aromatic Hydrocarbons (PAHs) are hydrocarbon compounds having two or more fused benzene ring structures in the molecule, and do not contain any hetero atom or substituent, and are the earliest recognized chemical carcinogens. The invention aims to solve the problem that the total content of PAHs (polycyclic aromatic hydrocarbons) of people is lower than 5ppm (meeting the requirement of the field of direct contact of food and human bodies), and the pigment carbon black is environment-friendly and healthy.
And (3) a carbon black.
Disclosure of Invention
The invention aims to provide a non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content and a production method thereof, belonging to a non-groove gas-mixing carbon black production process in a contact method. The product produced by the process is pigment carbon black with low polycyclic aromatic hydrocarbon, has the advantages of common pigment carbon black, and can control the content of polycyclic aromatic hydrocarbon within 5 ppm.
The carbon black product provided by the invention is low polycyclic aromatic hydrocarbon pigment carbon black, and mainly comprises EC311 carbon black and FH3600 carbon black.
The invention provides a slotless gas mixing pigment carbon black with low polycyclic aromatic hydrocarbon content, which consists of raw oil and carrier gas, wherein the weight ratio of the raw oil to the carrier gas is as follows: 360-400: 180-300; the raw oil is anthracene oil, and the carrier gas is coke oven gas.
Further, the moisture content of the anthracene oil is less than 4% (mass percent), and the density is 1.13-1.16 g/mL; the low heating value of the coke oven gas is more than or equal to 16500 kJ/m and H2S≤300mg/m³、NH3Carrying out thin-wall high-yield high3。
The invention provides a production method of the non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content, which comprises the following steps:
(1) air enters the fire house through the adjustable air inlets on two sides of the bottom of the fire house in a natural air inlet mode, energy is saved without an external fan in the air inlet mode, and the height of the lamp tube and the aperture of the burner are convenient to adjust;
(2) pumping anthracene oil into an anthracene oil preheating tank through an oil pump, feeding the anthracene oil into a preheating kettle for preheating through a quantitative feed of an anthracene oil metering tank, controlling the preheating temperature to be 180-200 ℃, and then feeding the anthracene oil into a gasification kettle;
(3) the anthracene oil is gasified and mixed with the carrier gas in a gasification kettle, the temperature of the mixture is controlled to be 300-340 ℃, the pressure is controlled to be 2000-2800 Pa, and then the mixture enters a lamp tube in a firebox and is incompletely combusted through the lamp tube which is arranged vertically and horizontally and a burner on the lamp tube;
before entering the gasification kettle, the carrier gas firstly surrounds the fire house for a circle through a gas pipeline, the waste heat of the fire house is fully utilized for heating, the temperature of the carrier gas is controlled to be 550-650 ℃, and the pressure is controlled to be 2000-2800 Pa.
(4) The high-temperature product flue gas generated after the reaction exchanges heat with the carrier gas, enters a heat-insulating pipeline surrounding the fire house for aerobic reaction and is cooled at the same time, so that the temperature of the product flue gas is reduced to below 300 ℃;
(5) the temperature of the product flue gas is reduced to 220-280 ℃ through a cyclone separator and a bag filter, then the product flue gas enters a pneumatic conveying pipeline, is conveyed into a granulator for granulation through a pneumatic conveying fan, and is prepared into carbon black products through a hoister and a sieving machine after granulation, and the carbon black products are packaged and stored;
(6) purifying the tail gas in the bag filter and then discharging the purified tail gas;
(7) asphalt in anthracene oil accumulated at the bottom of the gasification kettle is pumped to an asphalt tank by an asphalt pump, and asphalt gas volatilized by high-temperature asphalt in the asphalt tank is recovered after passing through an asphalt washing tower. The step not only recovers the asphalt, but also reduces the pollution to the environment, and has economic benefit and good environmental benefit.
In the above scheme, the fluorescent tubes in the fire house are arranged vertically and horizontally and are provided with 110-200 fluorescent tubes, the distance between the fluorescent tubes and the bottom of the fire house is 1-3 meters, the fluorescent tubes are provided with burners, and the apertures of the burners are 0.3-3 mm.
Further, the flue gas is at a temperature above 220 ℃ and maintained for a time above 3min before entering the bag filter.
The invention provides a production device of the non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content, which comprises an anthracene oil preheating tank, an anthracene oil metering tank, a preheating kettle, a gasification kettle, a cyclone separator, a bag filter, a pneumatic conveying fan, a granulator, a lifter, a carbon black storage tank and a packaging machine which are sequentially connected; the bottom of the fire house is provided with air inlets with two adjustable sides, and the height of the lamp tube and the aperture of the burner are adjustable. The anthracene oil preheating tank is connected with the anthracene oil storage tank through an oil pump; the gas pipeline of the coke oven gas tank passes through the upper part of the fire house and is connected with the gasification kettle. The bottom of the gasification kettle is sequentially connected with an asphalt pump, an asphalt tank, a fan and an asphalt washing tower.
The invention has the beneficial effects that:
the polycyclic aromatic hydrocarbon content of the pigment carbon black produced by the invention can be effectively controlled within 5ppm, the polycyclic aromatic hydrocarbon content test report of SGS of a third-party international detection institution is obtained, the environmental protection requirements of most standards on the carbon black can be met, the raw materials are easy to purchase, the production cost is low, the carbon black with low aromatic hydrocarbon content is already put into production on a large scale, and the carbon black with low aromatic hydrocarbon content is popular in the market with better environmental protection performance and has better economic benefit.
Drawings
FIG. 1 is a drawing of an apparatus for producing pigment carbon black according to the present invention.
In the figure, 1 is an anthracene oil storage tank; 2 is an anthracene oil preheating tank; 3 is an oil pump; 4 is an anthracene oil metering tank; 5, a preheating kettle; 6 is a gasification kettle; 7 is a coke oven gas tank; 8 is a firebox; 9 is a reverse suction fan; 10 is a cyclone separator; 11 is a bag filter; 12 is a pneumatic conveying fan; 13 is a granulator; 14 is a hoisting machine; 15 is a carbon black storage tank; 16 is a packaging machine; 17 is an asphalt pump; 18 is an asphalt tank; 19 is a fan; 20 is a pitch wash column. A is raw oil, B is mixed gas, C is carrier gas and D is tail gas.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
As shown in fig. 1, a device for producing a non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content comprises an anthracene oil preheating tank 2, an anthracene oil metering tank 4, a preheating kettle 5, a gasification kettle 6, a firebox 8, a cyclone separator 10, a bag filter 11, a pneumatic conveying fan 12, a granulator 13, a lifter 14, a carbon black storage tank 15 and a packaging machine 16 which are connected in sequence; the bottom of the fire house is provided with air inlets with two adjustable sides, and the height of the lamp tube and the aperture of the burner are adjustable. The anthracene oil preheating tank 2 is connected with the anthracene oil storage tank 1 through an oil pump 3; a gas pipeline of the coke oven gas tank 7 passes through the upper part of the firebox 8 and is connected with the gasification kettle 6. The bottom of the gasification kettle 6 is sequentially connected with an asphalt pump 17, an asphalt tank 18, a fan 19 and an asphalt washing tower 20.
The fluorescent tubes in the fire room are arranged vertically and horizontally and are provided with 110-200 fluorescent tubes, the distance between each fluorescent tube and the bottom of the fire room is 1-3 meters, burners are arranged on the fluorescent tubes, and the diameters of the burners are 0.3-3 mm.
Example 1: preparation of EC311 series carbon black products
The process flow of the present invention is first described with reference to FIG. 1:
(1) raw oil from an anthracene oil storage tank 1 is pumped into an anthracene oil preheating tank 2 through an oil pump 3, and is fed quantitatively into a preheating kettle 5 through an anthracene oil metering tank 4 for preheating, the preheating temperature is controlled at 185 ℃, and then the raw oil enters a gasification kettle 6;
(2) before entering the gasification kettle 6, the carrier gas from the coke oven gas tank 7 firstly surrounds a circle in the firebox 8 through a gas pipeline, the residual heat of the firebox is fully utilized for heating, the temperature of the carrier gas is controlled at 600 ℃, and the pressure is controlled at 2700 Pa.
(3) Raw oil is gasified and mixed with fuel gas in a gasification kettle 6, the mixed temperature is controlled at 340 ℃, the pressure is controlled at 2700Pa, and then the mixture enters a lamp tube in a firebox 8 and is incompletely combusted through a plurality of 140 vertically and horizontally arranged lamp tubes and burners on the lamp tube.
The air enters the fire house through the air doors which are adjustable on two sides of the bottom of the fire house in a natural air inlet mode, the air inlet mode is convenient to adjust without energy conservation of an external fan, and only the air door on the bottom of the fire house is needed to be adjusted.
(4) The high-temperature product flue gas generated after the reaction exchanges heat with the carrier gas firstly, and then enters a heat-insulating pipeline surrounding the firebox 8 for air cooling heat exchange, so that the temperature of the product flue gas is reduced to below 300 ℃.
(5) The product flue gas is cooled to 180 ℃ through a cyclone separator 10 and a bag filter 11, enters a pneumatic conveying pipeline, is sent to a granulator 13 through a pneumatic conveying fan 12 for granulation, and is made into carbon black products through a lifter 14, a carbon black storage tank 15 and a packing machine 16 after granulation, and the carbon black products are packaged and stored.
(6) The tail gas in the bag filter 11 is discharged after being purified.
(7) Asphalt in anthracene oil accumulated at the bottom of the gasification kettle is sent to an asphalt tank 18 through an asphalt pump 17, asphalt gas volatilized by high-temperature asphalt in the asphalt tank 18 is recovered through an asphalt washing tower 20, and therefore not only is the asphalt recovered, but also the pollution to the environment is reduced, and economic benefits and environmental benefits are achieved.
Example 2: preparation of EC611 series carbon black products
In this example, the EC611 series carbon black product was prepared by using the reaction apparatus shown in fig. 1 and the above reaction principle, and the method includes the following steps:
(1) air enters the fire house through the adjustable air doors on two sides of the bottom of the fire house in a natural air inlet mode, the air inlet mode is convenient to adjust without adding an external fan to save energy, and only the air door on the bottom of the fire house is needed to be adjusted;
(2) pumping 380kg/h anthracene oil into an anthracene oil preheating tank through an oil pump, feeding the anthracene oil into a preheating kettle for preheating in a quantitative feeding mode in a given time period, controlling the preheating temperature at 180 ℃, then feeding the anthracene oil into a gasification kettle,
(3) 200kg/h of carrier gas surrounds the fire house for a circle through the pipeline, the residual heat of the fire house is fully utilized for heating, the temperature of the carrier gas is controlled at 550 ℃, and the pressure is controlled at 2200 Pa.
(4) Raw oil is gasified in a gasification kettle and mixed with fuel gas, the mixed temperature is controlled at 320 ℃, the pressure is controlled at 2100Pa, then the mixture enters a lamp tube in a firebox, the height of the lamp tube is increased to be 1.0 meter away from the bottom of the firebox, and the diameter of a burner is 1.6 mm;
the raw oil is anthracene oil, and the carrier gas is coke oven gas; the raw oil has a water content of less than 4% and a density of 1.13g/mL, and the low-level calorific value of the coke oven gas is more than or equal to 16500 kJ/m for carrying out heavy labor and H year2S≤300mg/m³、NH3High yield up to 100mg/m, high yield up to 500mg/m, high yield up to 50mg/m, high yield up to 0.451kg/m3. 380kg anthracene oil is used per hour, 443m lotus leaf is used per hour for coke oven gas.
(5) The high-temperature product flue gas generated after the reaction exchanges heat with the carrier gas, and then enters a heat-insulating pipeline surrounding the firebox for air cooling heat exchange, so that the temperature of the product flue gas is reduced to below 280 ℃.
(6) And (3) cooling the product flue gas to below 180 ℃ through a cyclone separator and a bag filter, then feeding the product flue gas into a pneumatic conveying air system, feeding the product flue gas into a granulator through a pneumatic conveying fan for granulation, and packaging and warehousing the product flue gas into EC611 series carbon black products after the granulation is carried out through a bucket elevator and a 180-mesh sieve.
(7) And tail gas in the bag filter is purified and then discharged.
The test indexes and reference standards of the EC311 series carbon black products produced by the production process are as follows:
the test indexes and reference standards of the EC611 series carbon black products produced by the production process are as follows:
the EC311 and EC611 series carbon black produced by the production process is mainly applied to the industries of coatings, leather products, printing ink, high-quality plastic products and the like.
Claims (8)
1. A non-groove gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content is characterized in that: the fuel oil consists of raw oil and carrier gas, wherein the weight ratio of the raw oil to the carrier gas is as follows: 360-400: 180-300; the raw oil is anthracene oil, and the carrier gas is coke oven gas.
2. The low polycyclic aromatic hydrocarbon content channel-free pigment carbon black of claim 1, wherein: the moisture content of the anthracene oil is less than 4%, and the density of the anthracene oil is 1.13-1.16 g/mL.
3. The low polycyclic aromatic hydrocarbon content channel-free pigment carbon black of claim 1, wherein: the low heating value of the coke oven gas is more than or equal to 16500 kJ/m and H2S≤300mg/m³、NH3Carrying out thin-wall high-yield high3。
4. A method for producing a low polycyclic aromatic hydrocarbon content channel-free gas-mixing pigment carbon black according to any one of claims 1 to 3, characterized by comprising the steps of:
(1) air enters the fire house through the adjustable air inlets on two sides of the bottom of the fire house in a natural air inlet mode, and energy is saved without an external fan in the air inlet mode;
(2) pumping anthracene oil into an anthracene oil preheating tank through an oil pump, feeding the anthracene oil into a preheating kettle for preheating through a quantitative feed of an anthracene oil metering tank, controlling the preheating temperature to be 180-200 ℃, and then feeding the anthracene oil into a gasification kettle;
(3) the anthracene oil is gasified and mixed with the carrier gas in a gasification kettle, the temperature of the mixture is controlled to be 300-340 ℃, the pressure is controlled to be 2000-2800 Pa, and then the mixture quickly enters a lamp tube in a fire house and is subjected to incomplete combustion reaction through the vertically and horizontally arranged lamp tube and burners on the lamp tube;
(4) the high-temperature product flue gas generated after the reaction exchanges heat with the carrier gas, enters a heat-insulating pipeline surrounding the fire house for aerobic reaction and is cooled at the same time, so that the temperature of the product flue gas is reduced to below 300 ℃;
(5) the temperature of the product flue gas is reduced to 220-280 ℃ through a cyclone separator and a bag filter, then the product flue gas enters a pneumatic conveying pipeline, is conveyed into a granulator for granulation through a pneumatic conveying fan, and is prepared into carbon black products through a hoister and a sieving machine after granulation, and the carbon black products are packaged and stored;
(6) purifying the tail gas in the bag filter and then discharging the purified tail gas;
(7) asphalt in anthracene oil accumulated at the bottom of the gasification kettle is pumped to an asphalt tank by an asphalt pump, and asphalt gas volatilized by high-temperature asphalt in the asphalt tank is recovered after passing through an asphalt washing tower.
5. The method for producing a low polycyclic aromatic hydrocarbon content channel-free pigment carbon black according to claim 4, wherein: before entering the gasification kettle, the carrier gas firstly surrounds the fire house for a circle through a gas pipeline, the waste heat of the fire house is fully utilized for heating, the temperature of the carrier gas is controlled to be 550-650 ℃, and the pressure is controlled to be 2000-2800 Pa.
6. The method for producing a low polycyclic aromatic hydrocarbon content channel-free pigment carbon black according to claim 4, wherein: the fluorescent tubes in the fire room are arranged vertically and horizontally and are provided with 110-200 fluorescent tubes, the distance between each fluorescent tube and the bottom of the fire room is 1-3 meters, burners are arranged on the fluorescent tubes, and the diameters of the burners are 0.3-3 mm.
7. The method for producing a low polycyclic aromatic hydrocarbon content channel-free pigment carbon black according to claim 4, wherein: the flue gas is at a temperature above 220 ℃ and maintained for a time above 3min before entering the bag filter.
8. A device for producing the slotless gas-mixing pigment carbon black with low polycyclic aromatic hydrocarbon content, which is used for implementing the production method of any one of claims 4 to 7 and is characterized in that: comprises an anthracene oil preheating tank, an anthracene oil metering tank, a preheating kettle, a gasification kettle, a cyclone separator, a bag filter, a pneumatic conveying fan, a granulator, a lifter, a carbon black storage tank and a packaging machine which are connected in sequence; the bottom of the fire house is provided with air inlets with two adjustable sides, and the height of the lamp tube and the aperture of the burner are adjustable; the anthracene oil preheating tank is connected with the anthracene oil storage tank through an oil pump; a gas pipeline of the coke oven gas tank penetrates through the upper part of the fire house and is connected with the gasification kettle; the bottom of the gasification kettle is sequentially connected with an asphalt pump, an asphalt tank, a fan and an asphalt washing tower.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698797A (en) * | 2021-09-05 | 2021-11-26 | 周华良 | Vaporization tower for producing carbon black by gas mixing |
| CN114381145A (en) * | 2021-12-15 | 2022-04-22 | 焦作市和兴化学工业有限公司 | Preparation method of low-viscosity acetylene carbon black |
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| CN103952015A (en) * | 2014-04-11 | 2014-07-30 | 山西富立桦化工有限公司 | Carbon black product and production method thereof |
| CN104672954A (en) * | 2015-02-10 | 2015-06-03 | 安徽黑钰颜料新材料有限公司 | Production method of furnace carbon black with low polyaromatic hydrocarbon content and pigment carbon black product thereof |
| CN106947299A (en) * | 2017-05-03 | 2017-07-14 | 四川博蓝科新材料有限公司 | A kind of impurity content low colour carbon black production system and its production technology |
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| US20080159947A1 (en) * | 2006-11-07 | 2008-07-03 | Yurovskaya Irina S | Carbon Blacks Having Low PAH Amounts and Methods of Making Same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113698797A (en) * | 2021-09-05 | 2021-11-26 | 周华良 | Vaporization tower for producing carbon black by gas mixing |
| CN114381145A (en) * | 2021-12-15 | 2022-04-22 | 焦作市和兴化学工业有限公司 | Preparation method of low-viscosity acetylene carbon black |
| CN114381145B (en) * | 2021-12-15 | 2022-12-20 | 焦作市和兴化学工业有限公司 | Preparation method of low-viscosity acetylene carbon black |
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