CN101358042B - Pigment carbon black products and preparation technique thereof - Google Patents

Abstract

The invention provides C385 series carbon black products and a production process thereof. The raw material of the C385 series carbon black products contains raw oil and additive; the weight ratio of the raw oil and the additive is 1500 to 1620: 0.6 to 0.9; the C385 series carbon black products are produced through adopting the furnace pigment carbon black production process. The carbon black products of the invention belong to carbon black pigments, and have the advantages of high degree of blackness and coloring strength, easy dispersion, good gloss, etc, and the formula is reasonable, the preparation process is mature and is suitable for industrial mass production.

Description

A kind of pigment carbon black product and its production process

technical field

The invention belongs to the technical field of carbon black, and more specifically relates to a C385 series carbon black product and a production process thereof. the

Background technique

Carbon black is an amorphous carbon. Light, loose and extremely fine black powder with a very large specific surface area ranging from 10-3000m ² /g, which is obtained by incomplete combustion or thermal decomposition of organic matter (natural gas, heavy oil, fuel oil, etc.) in the absence of air The product of carbon black has different surface chemical properties due to different production methods. At present, the quality of pigment carbon black products is uneven, and the preparation process is not very mature.

Purpose of the invention

The purpose of the present invention is to provide a C385 series carbon black product and its production process. The carbon black product belongs to pigment carbon black and has the characteristics of blackness, good tinting strength, easy dispersion, good gloss, etc., and the raw materials are reasonable and easy to prepare. The process is mature and suitable for large-scale industrial production. the

The raw materials of the C385 series carbon black products of the present invention include: the raw materials of the C385 series carbon blacks include: raw material oil and additives, and the weight ratio of the amount of the raw material oil to the amount of the additives is: 1500-1620: 0.6-0.9. the

The C385 series carbon black product of the present invention is produced by a furnace process technology pigment carbon black production process. the

The remarkable advantages of the present invention are: coal tar is used as fuel oil in the present invention, appropriate anthracene oil is mixed in coal tar as raw material oil, the proportion of raw materials adopted is reasonable, the yield of carbon black is high, and the particle size of the produced carbon black product is Medium, narrow particle size distribution, high oxygen-containing functional groups on the surface of carbon black, and low structure. After the carbon black is pulverized and granulated, the C385 series carbon black products are obtained, so the produced carbon black products belong to pigment carbon. Black, with good blackness and tinting strength, easy to disperse, less impurities, etc., and the raw materials are reasonable, the preparation process is mature, suitable for large-scale industrial production, and has significant economic benefits. the

Description of drawings

Fig. 1 is the production process flow diagram of the new process of the furnace process pigment carbon black of the present invention, wherein 1 combustion chamber; 2 throat; 3 reaction chamber; 4 flue; 5 waste heat boiler; 6 high-temperature air preheater; Preheater; 8 low temperature air preheater; 9 primary thermal compensator; 10 primary cyclone separator; 11 secondary thermal compensator; 12 secondary cyclone separator; 13 bag filter; 14 bag filter; 15 fine powder crushing 16 air blower; 17 collection cyclone separator; 18 granulator; 19 special carbon black machine; 20 raw oil pump; 21 raw oil filter; 22 Roots blower; 23 fuel oil filter; 24 fuel oil pump; 25 tail gas Fan; 26 cooling water pumps. the

Detailed ways

The weight ratio of the amount of raw material oil to that of additives is: 1500-1620: 0.6-0.9; the raw material oil is a mixture of coal tar and anthracene oil, and the ratio of coal tar and anthracene oil in the raw material oil is: weight The ratio is 6:4-7:3; the water content of the raw material oil is less than 4%, the density is 1.14-1.17g/ml, and the oil yield is greater than 70%. the

The additive is potassium carbonate. the

The C385 series carbon black of the present invention is a powder-type pigment carbon black used in the paint and ink industries. the

The C385 series carbon black product of the present invention adopts the furnace process new process pigment carbon black production process to be specific as follows:

1) The air is compressed by a Roots blower to a pressure of 0.036-0.040Mpa, then passes through a low-temperature air preheater, a medium-temperature air preheater and a high-temperature air preheater in sequence, and is heated to 600°C before being sent into the combustion chamber;

2) Fuel oil and additives are sent into the combustion chamber and mixed with hot air for combustion. The temperature is controlled at 1500-1520°C. The hot smoke generated by combustion enters the reaction chamber through the throat, and the raw material oil is injected through the throat. Cleavage reaction in the reaction chamber; the temperature is 1450°C and the pressure is 20Kpa. the

3) After the reaction, the product flue gas of the reaction is quenched by quenching water and then enters the waste heat boiler, and then passes through the high-temperature air preheater, medium-temperature air preheater and low-temperature air preheater to reduce the temperature of the product flue gas to 340 ℃;

4) The product flue gas passes through the primary thermal compensator, the primary cyclone separator, the secondary thermal compensator and the secondary cyclone separator, the temperature drops to 200-250°C, and it enters the bag filter for collection. The collected carbon black Through the fine powder pulverizer, it is sent to the collection cyclone separator through the air blower;

5) The carbon black collected in the cyclone separator is granulated by a granulator, processed by a special carbon black machine, and passed through a 40-400 mesh screen to make a C385 series carbon black product. the

The solid carbon black remaining in the first-stage cyclone separator, secondary cyclone separator, bag filter and collection cyclone separator passes through the micropowder pulverizer, and is collected by the wind blower to the collection cyclone separator; the carbon black of the collection cyclone separator is processed After being granulated by a granulator, it is processed (crushed and ground) by a special carbon black machine (particle pulverizer) and passed through a 40-400 mesh screen to make C385 series carbon black products. the

The fuel oil is coal tar, and the fuel oil enters the combustion chamber together with potassium carbonate solution with a weight concentration of 10% after passing through the fuel oil filter, and the potassium carbonate solution enters the combustion chamber at a flow rate of 6-8 liters per hour , the fuel oil enters the combustion chamber at a flow rate of 240kg/h. the

The raw oil is sprayed through the throat at a flow rate of 25-27 kg per minute after passing through the raw oil filter. the

The tail gas in the bag filter is used for power generation after being discharged by the tail gas blower. the

The index of C385 series carbon black product of the present invention is as follows:

project indicators Heating loss %≤ 3.0 Ash %≤ 0.5 DBP absorption value ml/g≤ 0.80

PH value 6.5～9.0 Blackness (reflectivity)≤ 45 Tinting strength%≥ 110  Fluidity (35℃)mm≥ twenty one Volatile content%≥ 1.0 45μm sieve residue%≤ 0.100 Impurities none

The C385 series carbon black products of the present invention are mainly differentiated into C385 carbon black products of different finenesses according to the different meshes of the sieve after being processed by special carbon black machines. the

The following are several embodiments of the present invention to further illustrate the present invention, but the present invention is not limited thereto. the

Example 1

The raw material oil is a mixture of coal tar and anthracene oil, and the ratio of coal tar and anthracene oil in the raw material oil is: the weight ratio is 7:3; the moisture content of the raw material oil is less than 4%, and the density is 1.17g/ml. The oil yield is greater than 70%. the

The additive is potassium carbonate. the

The C385 series carbon black of the present invention is a granular pigment carbon black used in the paint and ink industries. the

C385 series carbon black product of the present invention adopts furnace process process pigment carbon black production process to be specific as follows:

1) The air is compressed by a Roots blower to a pressure of 0.036Mpa, then passes through a low-temperature air preheater, a medium-temperature air preheater and a high-temperature air preheater in sequence, and is heated to 600°C before being sent into the combustion chamber;

2) Fuel oil and additives are sent into the combustion chamber and mixed with hot air for combustion. The temperature is controlled at 1500°C. The hot smoke generated by combustion enters the reaction chamber through the throat, and the raw material oil is sprayed into the reaction chamber through the throat. Cracking reaction; the temperature is 1450°C and the pressure is 20Kpa. the

3) After the reaction, the product flue gas of the reaction is quenched by quenching water and then enters the waste heat boiler, and then passes through the high-temperature air preheater, medium-temperature air preheater and low-temperature air preheater to reduce the temperature of the product flue gas to 340 ℃;

4) The product flue gas passes through the primary thermal compensator, the primary cyclone separator, the secondary thermal compensator and the secondary cyclone separator, the temperature drops to 200°C, and enters the bag filter for collection. The collected carbon black is passed through the micropowder The pulverizer is sent to the collection cyclone separator through the air blower;

5) The carbon black collected in the cyclone separator is granulated by a granulator, processed by a special carbon black machine, and passed through a 40-mesh screen to make a C385 series carbon black product. the

The solid carbon black remaining in the first-stage cyclone separator, secondary cyclone separator, bag filter and collection cyclone separator passes through the micropowder pulverizer, and is collected by the wind blower to the collection cyclone separator; the carbon black of the collection cyclone separator passes through After granulation by the granulator, it is processed by a special carbon black machine and passed through a 40-mesh screen to make C385 carbon black products. the

Described fuel oil is coal tar, and described fuel oil enters combustion chamber together with potassium carbonate solution of weight concentration 10% after described fuel oil passes through fuel oil filter, and described potassium carbonate solution enters combustion chamber with the flow rate of 6 liters per hour, so Said fuel oil enters the combustion chamber with a flow rate of 240kg/h. the

The raw oil is sprayed through the throat at a flow rate of 25 kg per minute after passing through the raw oil filter. the

The tail gas in the bag filter is used for power generation after being discharged by the tail gas blower. the

Example 2

The feedstock oil is a mixture of coal tar and anthracene oil, and the proportioning ratio of coal tar and anthracene oil in the feedstock oil is: weight ratio 6:4; the moisture content of the feedstock oil is less than 4%, and the density is 1.14g/ml. The oil yield is greater than 70%. the

The additive is potassium carbonate. the

The C385 series carbon black of the present invention is a powder-type pigment carbon black used in the paint and ink industries. the

C385 series carbon black product of the present invention adopts furnace process process pigment carbon black production process to be specific as follows:

1) The air is compressed by a Roots blower to a pressure of 0.040Mpa, then passes through a low-temperature air preheater, a medium-temperature air preheater and a high-temperature air preheater in sequence, and is heated to 600°C before being sent into the combustion chamber;

2) Fuel oil and additives are sent into the combustion chamber and mixed with hot air for combustion. The temperature is controlled at 1520°C. The hot smoke generated by combustion enters the reaction chamber through the throat, and the raw material oil is sprayed into the reaction chamber through the throat. Cracking reaction; the temperature is 1450°C and the pressure is 20Kpa. the

3) After the reaction, the product flue gas of the reaction is quenched by quenching water and then enters the waste heat boiler, and then passes through the high-temperature air preheater, medium-temperature air preheater and low-temperature air preheater to reduce the temperature of the product flue gas to 340 ℃;

4) The product flue gas passes through the primary thermal compensator, the primary cyclone separator, the secondary thermal compensator and the secondary cyclone separator, the temperature drops to 250°C, and it enters the bag filter for collection. The collected carbon black passes through the micropowder The pulverizer is sent to the collection cyclone separator through the air blower;

5) The carbon black collected in the cyclone separator is granulated by a granulator, processed by a special carbon black machine, and passed through a 400-mesh screen to make a C385 carbon black product. the

The solid carbon black remaining in the first-stage cyclone separator, secondary cyclone separator, bag filter and collection cyclone separator passes through the micropowder pulverizer, and is collected by the wind blower to the collection cyclone separator; the carbon black of the collection cyclone separator is processed After being granulated by a granulator, it is processed by a special carbon black machine and passed through a 400-mesh screen to make a C385 carbon black product. the

Described fuel oil is coal tar, and described fuel oil enters combustion chamber together with potassium carbonate solution of weight concentration 10% after described fuel oil passes through fuel oil filter, and described potassium carbonate solution enters combustion chamber with the flow rate of 8 liters per hour, so The above-mentioned fuel oil enters the combustion chamber with a flow rate of 240kg/h. the

After the raw oil passes through the raw oil filter, it is injected through the throat at a flow rate of 27 kg per minute. the

The tail gas in the bag filter is used for power generation after being discharged by the tail gas blower. the

Example 3

The raw material oil is a mixture of coal tar and anthracene oil, and the ratio of coal tar and anthracene oil in the raw material oil is: the weight ratio is 6:4 to 7:3; the water content of the raw material oil is less than 4%, and the density is 1.14 ~1.17g/ml, the oil yield is greater than 70%. the

The additive is potassium carbonate. the

The C385 series carbon black of the present invention is a granular pigment carbon black used in the paint and ink industries. the

The C385 series carbon black product of the present invention adopts the furnace process new process pigment carbon black production process to be specific as follows:

1) The air is compressed by a Roots blower to a pressure of 0.038Mpa, then passes through a low-temperature air preheater, a medium-temperature air preheater and a high-temperature air preheater in sequence, and is heated to 600°C before being sent into the combustion chamber;

2) Fuel oil and additives are sent into the combustion chamber and mixed with hot air for combustion. The temperature is controlled at 1510°C. The hot flue gas generated by combustion enters the reaction chamber through the throat, and the raw material oil is sprayed into the reaction chamber through the throat. Cracking reaction; the temperature is 1450°C and the pressure is 20Kpa. the

3) After the reaction, the product flue gas of the reaction is quenched by quenching water and then enters the waste heat boiler, and then passes through the high-temperature air preheater, medium-temperature air preheater and low-temperature air preheater to reduce the temperature of the product flue gas to 340 ℃;

4) The product flue gas passes through the primary thermal compensator, the primary cyclone separator, the secondary thermal compensator and the secondary cyclone separator, the temperature drops to 230°C, and it enters the bag filter for collection, and the collected carbon black passes through the micropowder The pulverizer is sent to the collection cyclone separator through the air blower;

5) The carbon black collected in the cyclone separator is granulated by a granulator, processed by a special carbon black machine, and passed through a 40-400 mesh screen to make a C385 carbon black product. the

The solid carbon black remaining in the first-stage cyclone separator, secondary cyclone separator, bag filter and collection cyclone separator passes through the micropowder pulverizer, and is collected by the wind blower to the collection cyclone separator; the carbon black of the collection cyclone separator is processed After being granulated by a granulator, it is processed by a special carbon black machine and passed through a 40-400 mesh screen to make a C385 carbon black product. the

Described fuel oil is coal tar, and described fuel oil enters combustion chamber together with potassium carbonate solution of weight concentration 10% after described fuel oil passes through fuel oil filter, and described potassium carbonate solution enters combustion chamber with the flow rate of 7 liters per hour, so The above-mentioned fuel oil enters the combustion chamber with a flow rate of 240kg/h. the

After the raw oil passes through the raw oil filter, it is injected through the throat at a flow rate of 26 kg per minute. the

The tail gas in the bag filter is used for power generation after being discharged by the tail gas blower. the

Claims (5)

1. A production process adopted by C385 series carbon black products, characterized in that: the raw materials of the C385 series carbon blacks include: stock oil and additives, and the consumption weight ratio of the amount of the stock oil to the additives is: 1500～1620 : 0.6～0.9; The C385 series carbon black products are produced by the furnace process pigment carbon black production process; the furnace process pigment carbon black production process is as follows: 1) The air is compressed by the Roots blower to a pressure of 0.036-0.040Mpa, then passes through the low-temperature air preheater, the medium-temperature air preheater and the high-temperature air preheater in turn, and is heated to 600°C before being sent into the combustion chamber; 2) Fuel oil and additives are sent into the combustion chamber and mixed with hot air for combustion. The temperature is controlled at 1500-1520°C. The hot smoke generated by combustion enters the reaction chamber through the throat, and the raw material oil is injected through the throat. Cracking reaction in the reaction chamber; the temperature is 1450°C and the pressure is 20Kpa; 3) After the reaction, the product flue gas of the reaction is quenched by quenching water and then enters the waste heat boiler, and then passes through the high-temperature air preheater, medium-temperature air preheater and low-temperature air preheater to reduce the temperature of the product flue gas to 340 ℃; 4) The product flue gas passes through the primary thermal compensator, the primary cyclone separator, the secondary thermal compensator and the secondary cyclone separator, the temperature drops to 200-250°C, and it enters the bag filter for collection. The collected carbon black Pass through the fine powder pulverizer and send to the collection cyclone separator through the air blower; 5) The carbon black collected in the cyclone separator is granulated by a granulator, processed by a special carbon black machine, and made into a C385 series carbon black product after passing through a 40-400 mesh screen; The solid carbon black remaining in the first-stage cyclone separator, secondary cyclone separator, bag filter and collection cyclone separator passes through the micropowder pulverizer, and is collected by the wind blower to the collection cyclone separator; the carbon black of the collection cyclone separator is processed After being granulated by a granulator, it is processed by a special carbon black machine and passed through a 40-400 mesh screen to make C385 series carbon black products; The fuel oil is coal tar, and the fuel oil enters the combustion chamber together with potassium carbonate solution with a weight concentration of 10% after passing through the fuel oil filter, and the potassium carbonate solution enters the combustion chamber with a flow rate of 6 to 8 liters per hour. Described fuel oil enters combustion chamber with the flow rate of 240kg/h; The raw oil is sprayed through the throat at a flow rate of 25-27 kg per minute after passing through the raw oil filter. 2. The production process adopted by the C385 series carbon black products according to claim 1, characterized in that: the feedstock oil is a mixture of coal tar and anthracene oil, and the consumption ratio of coal tar and anthracene oil in the feedstock oil The method is: according to the weight ratio of 6:4-7:3; the water content of the raw material oil is less than 4%, the density is 1.14-1.17g/ml, and the oil yield is greater than 40%. 3. The production process adopted by the C385 series carbon black products according to claim 1, characterized in that: the additive is potassium carbonate. 4. The production process adopted by the C385 series carbon black products according to claim 1, characterized in that: the C385 series carbon blacks are powder-type pigment carbon blacks used in the paint and ink industries. 5. The production process adopted by the C385 series carbon black products according to claim 1, characterized in that: the tail gas in the bag filter is used for power generation after being discharged by a tail gas fan.

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