Feeding device for high-pigment special carbon black reaction furnace

Abstract

The utility model discloses a feeding device for a high-pigment special carbon black reaction furnace, relates to the technical field of carbon black reaction furnaces, and mainly aims to integrate and optimize the equipment structure of the carbon black reaction furnace. According to the main technical scheme, the feeding device for the high-pigment special carbon black reacting furnace comprises a rectifying part and a feeding part, the rectifying part comprises an outer sleeve and an inner sleeve which are coaxially arranged, the outlet end of the inner sleeve is fixedly connected to an inlet of a combustion chamber, the upper side wall of the outer sleeve is connected to an air pipe, the inlet end of the outer sleeve is fixedly connected to a sealing plate, and a gap exists between the sealing plate and the inlet end face of the inner sleeve; the feeding part comprises a natural gas pipe and an additive pipe, the natural gas pipe penetrates through the sealing plate, the additive pipe is coaxially arranged in the natural gas pipe, and the natural gas pipe and the additive pipe both extend into the inner sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon black reactors, in particular to a feeding device for a high-pigment special carbon black reactor. Background Art

[0002] The carbon black reactor is the main equipment of the carbon black production unit and the core of the production unit. The structure of the burner in the combustion section of the reactor plays a decisive role in the complete combustion of the fuel oil.

[0003] At present, the working process of the carbon black reactor burner is as follows: high-temperature air heated to 650-800℃ by the high-temperature preheater enters the mixing chamber through the high-temperature air pipe and is mixed with natural gas radially entering the mixing chamber from the inlet pipe, and then burns in the combustion chamber to provide energy for the carbon black reaction.

[0004] The additive (potassium carbonate) and raw oil (anthracene oil) are mixed in a static mixer and then enter the combustion chamber of the carbon black reactor.

[0005] The above reaction process requires the separate installation of equipment for mixing additives and crude oil, and equipment for mixing air and natural gas. The equipment investment cost is high, and the equipment structure needs to be optimized. Utility Model Content

[0006] In view of this, the utility model provides a feeding device for a high-pigment special carbon black reactor, the main purpose of which is to integrate and optimize the equipment structure of the carbon black reactor.

[0007] In order to achieve the above-mentioned purpose, the present invention mainly provides the following technical solutions:

[0008] The utility model provides a feeding device for a high-pigment special carbon black reaction furnace, which comprises: a rectifying part and a feeding part;

[0009] The rectifying portion includes an outer sleeve and an inner sleeve arranged coaxially, the outlet end of the inner sleeve is fixedly connected to the inlet of the combustion chamber, the upper side wall of the outer sleeve is connected to the air pipe, and the inlet end of the outer sleeve is fixedly connected to the sealing plate, and there is a gap between the sealing plate and the inlet end surface of the inner sleeve;

[0010] The feeding portion includes a natural gas pipe and an additive pipe. The natural gas pipe passes through the sealing plate. The additive pipe is coaxially arranged in the natural gas pipe. Both the natural gas pipe and the additive pipe extend into the inner sleeve.

[0011] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0012] Optionally, the outlet end surface of the natural gas pipe is flush with the outlet end surface of the additive pipe.

[0013] Optionally, the inlet end surface of the inner sleeve is inclined downward.

[0014] Optionally, an air cooling pipe is further included, and the air cooling pipe is sleeved on the natural gas pipe outside the sealing plate.

[0015] Optionally, a heat insulation layer is further included, and the heat insulation layer is attached to the inner side surface of the sealing plate.

[0016] Optionally, it further includes a plurality of swirl blades, the central axis of the natural gas pipe coincides with the central axis of the inner sleeve, and the plurality of swirl blades are evenly distributed around the annular space between the natural gas pipe and the inner sleeve.

[0017] Optionally, the rotation angle of each swirl blade is 45°.

[0018] Optionally, the inlet of the combustion chamber is provided with a reduced diameter section.

[0019] By means of the above technical solution, the present invention has at least the following advantages:

[0020] The preheated air enters the outer sleeve through the air pipe, reaches the interval position, and then enters the inner sleeve. The additive pipe sprays the additive into the inner sleeve, and the natural gas pipe sprays the natural gas into the inner sleeve. When the additive is sprayed, the natural gas flow drives the additive flow, thereby accelerating the diffusion of the additive.

[0021] In the above process, air, natural gas and additives are fully mixed before entering the combustion chamber, which helps the subsequent raw oil to be fully burned in the combustion chamber.

[0022] Moreover, when using this feeding device, there is no need to set up a static mixer separately. Natural gas and air cooperate to assist the flow and diffusion of additives, integrate the equipment structure of the carbon black reactor, and reduce equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a feeding device for a high-pigment special carbon black reactor provided by an embodiment of the present utility model;

[0024] Figure 2 This is the front view of the swirl blade.

[0025] The figure marks in the drawings of the specification include: outer sleeve 1, inner sleeve 2, combustion chamber 3, air pipe 4, sealing plate 5, natural gas pipe 6, additive pipe 7, chrome-zirconium corundum brick layer 8, chrome-corundum castable layer 9, alumina hollow ball castable layer 10, thermocouple temperature sensor 11, air cooling pipe 12, thermal insulation layer 13, swirl blade 14, and reduced diameter section 15. DETAILED DESCRIPTION

[0026] To further illustrate the technical means and effects employed by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed description of the specific implementation methods, structures, features, and effects of this utility model application. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, one embodiment of the present invention provides a feeding device for a high-pigment special carbon black reactor, which includes: a rectifying part and a feeding part;

[0029] The rectifying portion includes an outer sleeve 1 and an inner sleeve 2 arranged coaxially, the outlet end of the inner sleeve 2 is fixedly connected to the inlet of the combustion chamber 3, the upper side wall of the outer sleeve 1 is connected to the air pipe 4, and the inlet end of the outer sleeve 1 is fixedly connected to the sealing plate 5, and there is a gap between the sealing plate 5 and the inlet end surface of the inner sleeve 2;

[0030] The feeding portion includes a natural gas pipe 6 and an additive pipe 7 . The natural gas pipe 6 passes through the sealing plate 5 . The additive pipe 7 is coaxially arranged inside the natural gas pipe 6 . Both the natural gas pipe 6 and the additive pipe 7 extend into the inner sleeve 2 .

[0031] The working process of the feeding device for high pigment special carbon black reactor is as follows:

[0032] The preheated air enters the outer sleeve 1 through the air pipe 4, reaches the interval position, and then enters the inner sleeve 2. The additive pipe 7 sprays the additive into the inner sleeve 2, and the natural gas pipe 6 sprays the natural gas into the inner sleeve 2. When the additive is sprayed, the natural gas flow drives the additive flow, thereby accelerating the diffusion of the additive.

[0033] In the above process, before entering the combustion chamber 3 , the air, natural gas and additives are fully mixed, which helps the subsequent raw oil to be fully burned in the combustion chamber 3 .

[0034] In the technical solution of the present invention, the use of the feeding device does not require the installation of an additional static mixer. Natural gas and air synergistically assist the flow and diffusion of additives, integrating the carbon black reactor equipment structure and reducing equipment costs.

[0035] Specifically, the combustion chamber 3 includes a chromium-zirconium-corundum brick layer 8, a chromium-corundum castable layer 9, and an alumina hollow ball castable layer 10 which are sequentially arranged from the inside to the outside.

[0036] Specifically, a thermocouple temperature sensor 11 is installed on the side wall of the combustion chamber 3 .

[0037] In a specific embodiment, the outlet end surface of the natural gas pipe 6 is flush with the outlet end surface of the additive pipe 7 .

[0038] In this embodiment, specifically, the outlet end face of the natural gas pipe 6 is flush with the outlet end face of the additive, and the natural gas and the additive are ejected from the outlet end face simultaneously and mixed, diffused, and flowed in the inner sleeve 2 .

[0039] In a specific embodiment, the inlet end surface of the inner sleeve 2 is inclined downward.

[0040] In this embodiment, specifically, the inlet end face of the inner sleeve 2 is tilted downward. When the preheated air enters the outer sleeve 1 along the air pipe 4, the upper space of the interval position is smaller and the air pressure is greater, while the lower space of the interval position is larger and the air pressure is relatively smaller, thereby forming a pressure gradient, forcing the preheated air to first fill the lower space of the interval position and then enter the inner sleeve 2, thereby ensuring the air density entering the lower space of the inner sleeve 2.

[0041] In a specific embodiment, an air cooling pipe 12 is further included, and the air cooling pipe 12 is sleeved on the natural gas pipe 6 outside the sealing plate 5 .

[0042] In this embodiment, specifically, because the natural gas pipe 6 extends into the inner sleeve 2, the heat in the combustion chamber 3 is easily transferred to the natural gas pipe 6 and the additive pipe 7 outside the sealing plate 5. The outside air flows through the annular space between the air cooling pipe 12 and the natural gas pipe 6, which can transfer this part of the heat in time and avoid structural damage to the natural gas pipe 6 and the additive pipe 7.

[0043] In a specific embodiment, a heat insulating layer 13 is further included, and the heat insulating layer 13 is attached to the inner side surface of the sealing plate 5 .

[0044] In this embodiment, specifically, the heat insulation layer 13 is made of chrome corundum castable material to prevent the sealing plate 5 from being damaged due to continuous high temperature.

[0045] like Figure 1 and Figure 2 As shown, in a specific embodiment, it also includes a plurality of swirl blades 14, the central axis of the natural gas pipe 6 coincides with the central axis of the inner sleeve 2, and the plurality of swirl blades 14 are evenly distributed in the annular space between the natural gas pipe 6 and the inner sleeve 2.

[0046] In this embodiment, specifically, when the preheated air enters the inner sleeve 2 and flows toward the combustion chamber 3, the preheated air forms multiple swirl fluids when it flows through the multiple swirl blades 14. The swirl air drives the diffused natural gas and additives to swirl forward, so that the air, natural gas and additives are further fully mixed.

[0047] In a specific embodiment, the rotation angle of each of the swirl blades 14 is 45°.

[0048] In this embodiment, when the rotation angle of the swirl blade 14 is 45°, the swirl blade 14 guides the flow direction of the preheated air to be axially deflected by 45° relative to the inner sleeve 2. The deflected preheated air generates radial turbulence and axial drive on the subsequent mixture of natural gas and additives, thereby optimizing the material mixing effect.

[0049] In a specific embodiment, the inlet of the combustion chamber 3 is provided with a reduced diameter section 15 .

[0050] In this embodiment, specifically, the reduced diameter section 15 at the inlet of the combustion chamber 3 prevents the preheated air, natural gas and additive mixed flow from entering the combustion chamber 3 in a timely manner, so that a gas phase high pressure is generated at the inlet of the combustion chamber 3, thereby increasing the diffusion speed of the mixed flow after passing through the reduced diameter section 15.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A feeding device for a high-pigment special carbon black reactor, characterized in that: include: A rectifying portion, the rectifying portion comprising an outer sleeve and an inner sleeve arranged coaxially, the outlet end of the inner sleeve being fixedly connected to the inlet of the combustion chamber, the upper side wall of the outer sleeve being connected to the air pipe, the inlet end of the outer sleeve being fixedly connected to a sealing plate, and a gap being present between the sealing plate and the inlet end surface of the inner sleeve; The feeding part includes a natural gas pipe and an additive pipe. The natural gas pipe passes through the sealing plate. The additive pipe is coaxially arranged in the natural gas pipe. Both the natural gas pipe and the additive pipe extend into the inner sleeve.

2. The feeding device for a high-pigment special carbon black reactor according to claim 1, characterized in that: The outlet end surface of the natural gas pipe is flush with the outlet end surface of the additive pipe.

3. The feeding device for a high-pigment special carbon black reactor according to claim 1, characterized in that: The inlet end surface of the inner sleeve is inclined downward.

4. The feeding device for a high-pigment special carbon black reactor according to claim 1, characterized in that: It also includes an air cooling pipe, which is sleeved on the natural gas pipe outside the sealing plate.

5. The feeding device for a high-pigment special carbon black reactor according to any one of claims 1 to 4, characterized in that: It also includes a heat insulation layer, which is attached to the inner side of the sealing plate.

6. The feeding device for a high-pigment special carbon black reactor according to any one of claims 1 to 4, characterized in that: It also includes a plurality of swirl blades, the central axis of the natural gas pipe coincides with the central axis of the inner sleeve, and the plurality of swirl blades are evenly distributed in the annular space between the natural gas pipe and the inner sleeve.

7. The feeding device for a high-pigment special carbon black reactor according to claim 6, characterized in that: The rotation angle of each swirl blade is 45°.

8. The feeding device for a high-pigment special carbon black reactor according to any one of claims 1 to 4, characterized in that: The inlet of the combustion chamber is provided with a reduced diameter section.

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