CN111154296A

CN111154296A - Throat pipe for producing carbon black and raw oil spray gun

Info

Publication number: CN111154296A
Application number: CN202010136064.XA
Authority: CN
Inventors: 曹迎峰; 胡琪; 梁智彪; 陈忠斌; 聂绪建
Original assignee: Jiangxi Blackcat Carbon Black Co ltd
Current assignee: Jiangxi Blackcat Carbon Black Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-05-15

Abstract

A throat and raw oil spray gun for producing carbon black, the said throat is connected to the middle part of the carbon black reaction furnace, characterized by that: 2 circles of raw oil spray guns which are uniformly distributed are arranged on different radial sections of the throat section, each section is provided with a plurality of raw oil spray guns which are radially opposite to the center of the throat section, 2 circles of raw oil spray guns which are uniformly distributed in the front and the back are respectively arranged in a staggered mode, and meanwhile, the distance between the 2 circles of raw oil spray guns is 10-20 cm; the invention has the technical effects that: the structure of the carbon black reaction throat pipe section and the raw oil spray gun is improved, more technical means can be provided for adjusting the process control parameters for producing carbon black under the condition of not replacing equipment, and the same reaction furnace can be used for producing various series of carbon black products, so that the construction of a carbon black production line can be reduced, the production efficiency of enterprises is greatly improved, and meanwhile, the atomization effect of raw oil can be greatly improved by adjusting the injection angle of the raw oil spray gun, the energy conservation and consumption reduction are achieved, and the quality of carbon black products is improved.

Description

Throat pipe for producing carbon black and raw oil spray gun

Technical Field

The invention relates to a throat and a spray gun, in particular to a throat and a raw oil spray gun for producing carbon black.

Background

The carbon black production is that fuel (raw oil) is incompletely combusted, namely part of raw oil is combusted to generate high temperature, and part of raw oil is pyrolyzed to generate carbon black. The carbon black is widely used and mainly used in the rubber industry (including automobile tires and various rubber products), daily necessities, insulating materials, paints, printing ink and the like), the prior art has relatively mature technology when producing conventional carbon black, but the carbon black products (brands) produced by each carbon black production line are single, the same carbon black production line is not easy to change process control parameters so as to produce other brands of carbon black, and the carbon black production line has huge investment, so that carbon black production enterprises are usually difficult to adopt a mode of constructing more production devices to meet the generation requirements of multiple varieties of carbon black, and a mode of producing a plurality of series of carbon black products on the same production device has to be adopted, thereby leading to low occupation ratio of producing high-quality carbon black in China, and particularly, the special carbon black production is difficult to meet the quality requirements; among the factors affecting the formation and quality of carbon black, the injection position of the feedstock, the atomization state, the flow rate and the flow state of the reaction material, and the like are the most direct and important factors, except for the reaction temperature (particularly, the temperature of the reaction center region), the pressure in the reaction furnace, and the reaction time. Therefore, the reactor throat section and the feedstock nozzle are critical to carbon black production. The throat section structure of the existing connecting carbon black reaction furnace is generally only provided with a circle of a plurality of raw oil nozzles uniformly in the radial direction, and the positions and the oil injection directions of the raw oil nozzles are also fixed and unchanged, thereby influencing the quality and the yield of the carbon black. The prior spray gun has the patent publication number of 2017101330291X and the invention name of the spray gun is a spray gun for controlling the structure of carbon black products, the spray gun adopts a structure without a nozzle to prevent the nozzle from being blocked, but the effect of atomizing raw oil is poor, and the invention name of the spray gun is also the patent publication number of 2014102219738: an improved spray gun can achieve a certain raw oil atomizing effect, but has a single adjusting technical means, and cannot achieve the purpose of adjusting the raw oil spraying angle, so that the raw oil atomizing effect is optimal, the adjustment and the improvement of the quality of carbon black products are influenced, and the problems provided by the invention cannot be solved.

Disclosure of Invention

The invention aims to provide a choke and a raw oil spray gun for producing carbon black, which solve the problems that in the prior art, the position of the raw oil spray gun is fixed, the parameter adjustable range in the whole production process of the carbon black is small, and the process parameter optimization cannot be obtained by replacing equipment for many times due to large investment of a carbon black production device and high equipment manufacturing cost; and, carbon black is a continuous process in production, can't shut down the change equipment at will in the production process, shut down and lead to producing unstably, product quality fluctuation and economic loss are all very big, simultaneously because throat section has set up a round of raw oil spray gun on a radial cross-section only, a plurality of nozzle sprays raw oil to the choke central axis simultaneously, the raw oil atomization cracking efficiency that easily leads to spraying is low, influence carbon black quality and yield, it is single to produce carbon black product technological means simultaneously, can't reach the purpose of producing a plurality of series of carbon black products on the same apparatus for producing.

The invention is characterized in that the device comprises a carbon black reaction furnace, a throat pipe, a bushing, a raw oil spray gun, a nozzle and an angle-adjustable device, wherein the throat pipe is connected with the middle part of the carbon black reaction furnace, and the device is characterized in that: the different radial sections of the throat pipe section are provided with 2 circles of raw oil spray guns which are uniformly distributed, each section is provided with a plurality of raw oil spray guns which are radially opposite to the center of the throat pipe section, the 2 circles of raw oil spray guns which are uniformly distributed in the front and the back are respectively arranged in a staggered mode, meanwhile, the distance between the 2 circles of raw oil spray guns is 10-20cm, the raw oil spray guns are movably connected to the side wall of the throat pipe section through bushings, the raw oil spray guns are connected with angle-adjustable devices, and the injection angle of spray.

The direction of the jet angle adjustment of the nozzle is opposite to the direction of the high-temperature air flow.

The number of the raw oil spray guns in the circle is 6-8.

The inner diameter of the spray hole of the nozzle does not exceed the inner diameter of the raw oil spray gun pipe and is 1/10-2.5/10 of the inner diameter of the raw oil spray gun pipe.

The bushing and the raw oil spray gun can be connected through threads.

The length of the tail end of the nozzle extending into the throat pipe is 2-5 cm.

The invention has the technical effects that: the structure of the carbon black reaction throat pipe section and the raw oil spray gun is improved, the technical control parameters for producing carbon black can be adjusted by more technical means under the condition of not replacing equipment, and multiple series of carbon black products can be produced by the same reaction furnace by changing the technical parameters, so that the construction of a carbon black production line can be reduced, the production efficiency of an enterprise is greatly improved, meanwhile, the atomization effect of the raw oil can be greatly improved by adjusting the injection angle of the raw oil gun, the effect of saving energy, reducing consumption and improving the quality of the carbon black products is achieved, more technical means are provided for producing and researching high-added-value carbon black products, and the market competitiveness of the carbon black products is improved.

Drawings

FIG. 1 is a schematic view of the throat section of the present invention;

FIG. 2 is a schematic cross-sectional view of a throat section of the present invention;

FIG. 3 is a schematic cross-sectional view of a second throat section of the present invention;

FIG. 4 is a schematic view showing the structure of a raw oil spray gun according to the present invention.

In the figure, 1, a carbon black reaction furnace 2, a throat section 3, a bushing 4, a raw oil spray gun 5, a nozzle 6 and an angle-adjustable device.

Detailed Description

According to the invention, as shown in the figures 1, 2, 3 and 4, the carbon black reaction furnace 1 is connected with the

throat section

2, 2 circles of raw oil spray guns 4 which are uniformly and longitudinally arranged are arranged on the throat section 2, a plurality of raw oil spray guns 4 are directly opposite to the center of the throat section 2 in the radial direction, the 2 circles of raw oil spray guns 4 which are uniformly arranged in the front and back are respectively arranged in a staggered manner, and the problem that a circle of raw oil spray guns are arranged on the same cross section is solved by adopting the front and back arranged raw oil spray guns, a plurality of spray nozzles simultaneously spray raw oil to the central axis of the throat, so that the atomized cracking efficiency of the sprayed raw oil is low, the quality and the yield of carbon black are influenced, and the technical means.

Meanwhile, 2 circles of raw oil spray guns 4 are aggregated by 10-20cm, the distance between every two adjacent 2 circles of raw oil spray guns 4 cannot be too close or too far, the effect of stabilizing the atomization and rapid diffusion of the raw oil at the throat section cannot be well achieved if the distance is too close, and the reaction temperature is obviously reduced due to the fact that the cracking endothermic process of the raw oil sprayed at the front end is prolonged, so that the cracking temperature of the raw oil at the front end and the cracking temperature of the raw oil at the rear end have obvious temperature difference, the quality of carbon black products is reduced, and the product yield is possibly influenced; the raw oil spray gun 4 is movably connected to the side wall of the throat pipe section through the bushing 3, the nozzle 5 of the raw oil spray gun 4 is connected with the angle-adjustable device 6, the injection angle of raw oil of the nozzle 5 can be adjusted to be 0-15 degrees, the atomization effect of the raw oil can be greatly improved by adjusting the injection angle of the nozzle through the angle-adjustable device 6, the effect of saving energy, reducing consumption and improving the quality of carbon black products is achieved, more technical means are provided for producing and researching high-added-value carbon black products, and the market competitiveness of the carbon black products is improved. The inner diameter of the spray hole of the nozzle does not exceed the inner diameter of the raw oil spray gun pipe and is 1/10-2.5/10 of the inner diameter of the raw oil spray gun pipe.

Claims

1. A throat and raw oil spray gun for producing carbon black, it includes carbon black reacting furnace, throat, bush, raw oil spray gun, spray nozzle, adjustable angle block, the said throat is connected to the middle part of the carbon black reacting furnace, characterized by that: the different radial sections of the throat pipe section are provided with 2 circles of raw oil spray guns which are uniformly distributed, each section is provided with a plurality of raw oil spray guns which are radially opposite to the center of the throat pipe section, the 2 circles of raw oil spray guns which are uniformly distributed in the front and the back are respectively arranged in a staggered mode, meanwhile, the distance between the 2 circles of raw oil spray guns is 10-20cm, the raw oil spray guns are movably connected to the side wall of the throat pipe section through bushings, the nozzles of the raw oil spray guns are connected with an angle-adjustable device, and the.

2. The choke and feedstock oil lance of claim 1 wherein: the direction of the jet angle adjustment of the nozzle is opposite to the direction of the high-temperature air flow.

3. The choke and feedstock oil lance of claim 1 wherein: the number of the raw oil spray guns in each circle is 6-8.

4. The choke and feedstock oil lance of claim 1 wherein: the inner diameter of the spray hole of the nozzle does not exceed the inner diameter of the raw oil spray gun pipe and is 1/10-2.5/10 of the inner diameter of the raw oil spray gun pipe.

5. The choke and feedstock oil lance of claim 1 wherein: the bushing and the raw oil spray gun can be connected through threads.

6. The choke and feedstock oil lance of claim 1 wherein: the length of the tail end of the nozzle extending into the throat pipe is 2-5 cm.