CN201250105Y - Internal heating multi-chamber revolving type activating furnace - Google Patents

Abstract

The utility model provides a novel internal activating furnace, in particular to an internal heating multi-chamber revolving type activating furnace, which belongs to the manufacturing field of the activated carbon. An activating furnace body is a cylindrical furnace body composed of a carbon steel furnace casing, a thermal insulation layer and a stainless steel hearth inner layer, wherein three or six baffle plates with small holes or gaps are arranged inside the hearth inner layer, the hearth is equally divided into three or six working chambers, which are respectively connected with a breathing pipe, are connected with air pipes in the working chamber at the upper part of the hearth, and are connected with steam pipes in the working chamber at the lower part of the hearth. The utility model has the advantages that the weight is light, the strength is high, the activating furnace is provided with an unique hearth structure and a novel air and steam supplying form, because the combustion chamber and the activation chamber can be formed in the hearth simultaneously, the combustion loss of furnace material is avoided, and the yield and output rate of the activated carbon can be enhanced.

Description

Internal heating multi-chamber rotary activation furnace

Technical field

The utility model relates to equipment in the field of activated carbon production, in particular to a novel internal heat rotary activation furnace.

Background technique

At present, the internal heat rotary activation furnace used in the production of activated carbon has the advantages of high output and easy operation. However, this internal heat rotary activation furnace often has some problems during production and operation due to the use of refractory bricks and insulation materials. For example, refractory bricks and insulation bricks are used in the lining to make the furnace body too heavy, resulting in high power consumption. At the same time, due to the expansion caused by high temperature and the vibration during rotation, the refractory materials in the furnace often loosen. This loose phenomenon will become more and more serious because it cannot be repaired in time and effectively. Eventually, the refractory bricks will fall off from the furnace wall, and the furnace will be shut down for repair. When the traditional internal heat rotary activation furnace is baked, in order to make the lining refractory bricks and insulation bricks expand slowly during the furnace process, the furnace takes a long time, wastes fuel and consumes man-hours. Moreover, during the production of the traditional internal heat rotary activation furnace, carbonized material, steam, and air are sent into the same space in the same furnace, and while the air reacts with H ₂ and CO, it also reacts with carbonized material and activated carbon, resulting in Carbonized material or activated carbon burns out. This not only reduces the yield of activated carbon, but also affects the output and quality of activated carbon.

Contents of the invention

The purpose of this utility model is to provide a new type of activation furnace for the production of activated carbon—internal heat multi-chamber rotary activation furnace, which is light in weight and high in strength, has a unique furnace structure and novel air and steam supply forms, and simultaneously A combustion chamber and an activation chamber are formed, which avoids the burning loss of the charge, and can significantly increase the output and yield of activated carbon.

In order to achieve the above object, the technical solution of the utility model is: comprising a feed inlet, an activation furnace body, a driving device, a discharge port and a chimney, characterized in that: the activation furnace body is a carbon steel furnace shell, an insulating layer, A cylindrical furnace body composed of the inner layer of the stainless steel hearth; three to six partitions with small holes and gaps are arranged in the inner layer of the hearth, and the hearth is divided into three to six working chambers, which are respectively connected to the ventilation pipes; in the hearth The ventilation pipe in the working chamber of the upper part is an air pipe, and the ventilation pipe in the working chamber of the lower part of the furnace is a steam pipe.

There are three partitions with an included angle of 120°. There are three working chambers. Air pipes are connected to the working chamber at the upper part of the furnace, and steam pipes are connected to the working chamber at the lower part of the furnace.

It can be seen from the above that since the activation furnace body is designed as a three-layer structure, and there are three to six equal chambers in the furnace, and a set of steam and air input pipelines corresponding to these three to six chambers, Make the utility model technology have more superiority. 1. The furnace body structure with three layers of different materials does not use refractory bricks and insulation bricks, but uses insulation materials with excellent thermal insulation performance and light weight, which greatly reduces the self-weight of the activation furnace, improves thermal insulation performance, and reduces operating energy consumption . The furnace body is welded by two layers of steel plates of different materials inside and outside, and its strength is stronger, which avoids the phenomenon of frequent production shutdown and overhaul of the furnace lining. 2. Since the activation furnace hearth of the utility model is designed as three to six working chambers that are independent of each other and can communicate with each other, as well as the corresponding steam and air input pipelines, this makes the utility model in the activation process During the process, it has its unique excellent performance. The studios, which are independent of each other and can communicate with each other, alternately take on the role of the combustion chamber and the activation chamber during the continuous rotation of the furnace body. Generally speaking, when the furnace body rotates, there are always one to three chambers running to the top to become the combustion chamber, and at the same time, the one to three chambers running to the bottom become the activation chamber. It is worth mentioning that although multiple chambers are constantly operating synchronously with the furnace body, when each chamber operates at a specific spatial position, the working chamber at the top of the furnace is the combustion chamber; the working chamber at the bottom of the furnace is the combustion chamber. The chamber becomes the activation chamber, and the configuration to ensure this functional conversion is realized through the gas distribution device. The amount of air and steam leading to the working chamber and its location are always the same: the air line, its position is at the top of the furnace, when a certain chamber runs to this position, so this chamber becomes the combustion chamber; the steam line, always Being at the bottom of the hearth, it is obvious that the working chamber going into the bottom will of course be the activation chamber. This priority and position will never change. This ensures that the carbonized material or activated carbon is always at the bottom of the furnace, and is relatively isolated from the combustion chamber at the top, preventing the material from being burned.

Description of drawings

Fig. 1 is a structural schematic diagram of an internal heat multi-chamber rotary activation furnace of the present invention.

Fig. 2 is an A-A sectional view of the internal heating multi-chamber rotary activation furnace shown in Fig. 1 .

Fig. 3 is an A-A sectional view of the inner heat multi-chamber rotary activation furnace rotated through 120 degrees in Fig. 2 .

In the figure, 1. Feed inlet, 2. Activation furnace body, 3. Driving device, 4. Discharge port, 5. Gas distribution device, 6. Chimney, 7. Furnace shell, 8. Insulation layer, 9. Inside the furnace layer, 10, 11 steam pipes, 12. air pipes, 13, 14, 15. partitions.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in FIG. 1 , the utility model includes a feed inlet 1 , an activation furnace body 2 , a driving device 3 , a discharge outlet 4 , a gas distribution device 5 and a chimney 6 .

As shown in Figure 2, the activation furnace body 2 is a cylindrical furnace body structure composed of three different materials, which are respectively a furnace shell 7 welded by carbon steel, an insulation layer 8, and a hearth inner layer 9 welded by stainless steel. . The insulating material 8 sandwiched between the inner and outer layers is used to prevent heat loss and keep the furnace at a certain high temperature.

In the cylindrical hearth formed by the central portion of the hearth inner layer 9, three dividing plates 13, 14, 15 with small holes or slits having an angle of 120° are provided. They divide the hearth equally into three spaces, forming three studios I, II, III. Three ventilation pipes are respectively connected with the three working chambers I, II, and III, and they keep the air sent into the furnace by the air pipe 12 all the time, and the steam is sent into the furnace by the steam pipe 11 and the steam pipe 10 respectively. The relative positions of the three air pipes 12, 11, 10 and their corresponding three working chambers I, II, III are constantly changing along with the continuous rotation of the furnace body.

As shown in FIG. 3 , at this time, the upper position of the original studio I is replaced by the studio II. No matter how the three working chambers I, II, and III change their mutual positions, the positions and quantities of the air and steam injected into the three working chambers remain unchanged. All the time, the upper chamber can obtain air input; the lower two chambers can obtain steam input, and it is the gas distribution device 5 that realizes this function conversion. Due to the effect of gravity, the materials in the furnace will flow to two different positions: carbonized material or activated carbon will fall into two chambers at the bottom of the furnace through the small holes or gaps on the partition plate, as shown in Figure 2, II, In chamber III, an activation reaction occurs with the incoming steam to generate CO and H ₂ gas. These two gases will pass through the small holes or gaps on the partition, and flow to the chamber on the top of the furnace to react with the incoming air and release heat. This heat heats the charge through radiation and convection, and can also be transferred to the charge through the heat absorption of partitions and furnace materials, so as to supplement the heat consumed by the reaction of C and H ₂ O. This ensures that the two different chemical reaction processes of combustion and activation do not occur in the same space.

Claims (2)

1. A multi-chamber rotary activation furnace with internal heat, comprising a feed inlet, an activation furnace body, a driving device, a discharge port and a chimney, is characterized in that: the activation furnace body (2) is a carbon steel furnace shell (7 ), insulation layer (8), stainless steel hearth inner layer (9) constitute the cylindrical furnace body; three to six dividing plates with small holes and slits are arranged in the furnace inner layer (9), and the furnace is divided into three To the six working chambers, respectively connect the ventilation pipes; the ventilation pipes in the working chamber at the upper part of the furnace are air pipes, and the ventilation pipes in the working chamber at the lower part of the furnace are steam pipes. 2. The internal heating multi-chamber rotary activation furnace as claimed in claim 1, characterized in that: the partitions are three pieces (13), (14), (15), the included angle is 120°, and the There are three working chambers, and the air pipe (12) is connected in the working chamber at the upper part of the furnace, and the steam pipes (10), (11) are connected in the working chamber at the lower part of the furnace.

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