Process for producing soft carbon black by oil furnace method hard reaction furnace

A technology of soft carbon black and reaction furnace, which is applied in the direction of fibrous fillers, etc., can solve the problems of increasing costs, achieve the effects of increasing air-oil ratio, obvious economic benefits, and increasing gas flow rate

Pending Publication Date: 2022-01-11
文杰方
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Since the usage of soft carbon black only accounts for about 25% of the usage of hard carbon black, for small and medium-sized enterprises to specialize in the construction of soft carbon black production lines, they will face the problem of balancing the market and benefits. In order not to lose the soft carbon black In the current market, many enterprises can only build

Method used

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  • Process for producing soft carbon black by oil furnace method hard reaction furnace
  • Process for producing soft carbon black by oil furnace method hard reaction furnace
  • Process for producing soft carbon black by oil furnace method hard reaction furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of technology that oil furnace method hard reaction furnace produces N660 soft carbon black, comprises the following steps:

[0026] 1. The reaction furnace is a 40,000-ton hard horizontal furnace, including a combustion section 5, a throat pipe 6, a reaction section 7, a quenching section 8 and a gasification section 9 connected in sequence.

[0027] 2. After being pressurized by the fuel pump 2, the fuel oil is sprayed radially into the inner cavity of the combustion section 5 of the hard reaction furnace, that is, the combustion chamber. After being pressurized by the main supply fan 3 and preheated by the air preheater 10, it enters The temperature of the combustion section 5 is 700°C for mixed combustion with high-temperature air, and the combustion temperature in the combustion chamber is controlled at 1600°C. The fuel is ethylene tar, wherein the dosage of ethylene tar is 600kg / h, and the intake rate of high-temperature air is 14700Nm 3 / h.

[0028] 3. Th...

Embodiment 2

[0036] A kind of technology that oil furnace method hard reaction furnace produces N660 soft carbon black, comprises the following steps:

[0037] 1. The reaction furnace is a 40,000-ton hard horizontal furnace, including a combustion section 5, a throat pipe 6, a reaction section 7, a quenching section 8 and a gasification section 9 connected in sequence.

[0038] 2. After the fuel oil is pressurized by the fuel pump 2, it is radially sprayed into the combustion chamber of the hard reaction furnace, pressurized by the main supply fan 3, and then preheated by the air preheater 10, and the temperature entering the combustion section 5 is 705 ℃ high-temperature air mixed combustion, control the combustion temperature in the combustion chamber at 1600 ℃, the fuel is anthracene oil, wherein the dosage of anthracene oil is 597kg / h, and the intake of high-temperature air is 14700Nm 3 / h.

[0039] 3. The steam is axially sprayed into the combustion chamber from the front of the reac...

Embodiment 3

[0047] A kind of technology that oil furnace method hard reaction furnace produces N550 soft carbon black, comprises the following steps:

[0048] 1. The reaction furnace is a 40,000-ton hard horizontal furnace, including combustion section 5, throat 6, reaction 7, quenching section 8 and gasification section 9 connected in sequence.

[0049] 2. After the fuel oil is pressurized by the fuel pump 2, it is sprayed radially into the combustion section 5 of the hard reaction furnace. After being pressurized by the main supply fan 3 and preheated by the air preheater 10, the temperature entering the combustion section 5 is Mixed combustion with high temperature air at 670°C, control the combustion temperature in the combustion chamber at 1680°C, the fuel is ethylene tar, the dosage of ethylene tar is 625kg / h, and the intake of high temperature air is 13800Nm 3 / h.

[0050] 3. The steam is axially sprayed into the combustion chamber from the front of the reaction furnace, and forms a...

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Abstract

The invention discloses a process for producing soft carbon black by using an oil furnace method hard reaction furnace, which comprises the following steps of: injecting fuel into a hard furnace combustion chamber to be mixed with high-temperature air for combustion, setting the fuel quantity according to a combustion model at 1550-1700 DEG C, and simultaneously injecting sufficient stable steam to form high-temperature high-speed airflow meeting the generation condition of the soft carbon black together with combusted gas; radially spraying the raw oil meeting the air-oil ratio condition into a throat pipe of a reaction furnace and is mixed with the high-temperature and high-speed air flow, then rapidly carrying out a series of chemical reactions such as incomplete combustion and cracking to generate the carbon black fume; after proper reaction time, spraying quenching water into a quenching section of the reaction furnace to stop the reaction to prepare the soft carbon black. According to the process, steam is introduced into the combustion chamber, so that the furnace temperature is adjusted to a proper temperature, the gas flow rate in the hearth is increased, the air-oil ratio is improved, coking is not easy to form in the furnace, and continuous production is ensured. The process can be applied to an oil furnace method hard carbon black production line with annual output of 20,000 tons or more.

Description

technical field [0001] The invention relates to the technical field of carbon black production, in particular to a process for producing soft carbon black in an oil furnace method hard reaction furnace. Background technique [0002] Carbon black is the product of hydrocarbon substances in oxygen-deficient combustion. If the air-oil ratio is high and the oxygen deficiency is less, the carbon black produced is hard carbon black. On the contrary, the air-oil ratio is low and the oxygen deficiency is more, and the carbon black produced is soft carbon black. . However, the low air-oil ratio is likely to cause coking in the furnace, which makes the production unsustainable. At the same time, the low air-oil ratio will also cause incomplete reaction of raw material oil, which will cause excessive oil film on the surface of carbon black and affect the quality of carbon black. Therefore, in order to produce soft carbon black normally, only a special soft reaction furnace can be used...

Claims

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Application Information

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IPC IPC(8): C09C1/50
CPCC09C1/50
Inventor 文杰方
Owner 文杰方
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