KR20110047408A - Rotary furnace - Google Patents

Abstract

PURPOSE: A high-capacity rotary furnace is provided to cost-efficiently produce a solidified absorbent by adjusting the inclination of a furnace body and rotating the furnace body. CONSTITUTION: A high-capacity rotary furnace comprises a support(102), a furnace body(110), a rotating device(120), a hydraulic elevation device(150), a dispersing pipe(130), a cover(114), and a thermocouple(140). An object material is injected into the inside the furnace body. The furnace body is installed in the support to be rotated around a rotary shaft(112). The rotating device rotates the furnace body by supplying rotating force to the rotary shaft. The hydraulic elevation device is installed in the bottom of the support and adjusts the inclination of the furnace body using hydraulic pressure. The dispersing pipe supplies gas, steam or air to the furnace body. The cover is installed in the furnace body and opens and closes the furnace body. The thermocouple is extended to the inside the furnace body through the cover and senses the temperature of the furnace body.

Description

Large capacity rotary kiln {ROTARY FURNACE}

The present invention relates to a kiln, and more particularly to a large-volume rotary fluidized bed kiln.

In order to curb the emission of carbon dioxide, the main culprit of global warming, various research and developments such as separation and recovery technology of carbon dioxide, technology of using or immobilizing carbon dioxide, and renewable energy technology that do not emit carbon dioxide are being conducted.

The recovery method by dry regenerable sorbents for regeneration of carbon dioxide separation recovery technology is emerging as an innovative treatment method compared to other recovery methods. The recovery treatment method using a dry absorbent for regeneration can economically recover carbon dioxide while continuously circulating the solid absorbent in a fluidized bed or a high-speed fluidized bed process. Since the solid absorbent expands and contracts in the absorption reactor and the regeneration reactor in the process, it is required to have a good resistance to wear (strength) and reactivity that can maintain the original shape of the absorbent.

The components of the solid absorbent include inorganic components such as active ingredients, enhancers, supports, and inorganic binders, and organic components such as dispersants, organic binders, and antifoaming agents. The method for preparing a solid absorbent is first formulated with active ingredients, supports and inorganic binders selected through thermodynamic analysis, and added with organic additives to control homogeneous dispersion, stability, fluidity and slurry concentration of the absorbent raw material. Slurry) is prepared. After the slurry is manufactured, the milling process for grinding and homogenizing the raw materials, sieve for removing impurities, spray spray for granulating the slurry into a sphere, and finally firing Is completed.

Calcination is used to heat the absorbent from room temperature to high temperature in an air atmosphere using a Muffle furnace or a small fluidized bed calcination furnace for the complete decomposition of the organic and inorganic additives used in the slurry manufacturing process and the strength of the particles. It is a process. Firing process is very important for densification through shrinkage control of absorbent and controlling grain growth through strength and structure and structure control.

Muffle furnaces and small fluidized bed kilns used in the conventional solid absorber firing are mainly used for the small amount of absorbent firing (less than 5 kg / batch), but the scale-up of the recent recovery process Mass production was required, and thus a large capacity kiln was needed. Small electric furnaces and small fluidized bed kilns have difficulty in stacking a large amount of solid absorbent, and also have a problem in that it is difficult to uniformly heat each part of the absorbent when a large amount of lamination is fixed.

The present invention has been made in accordance with the requirements as described above, the object is to provide a large-volume rotary kiln rotatable up and down and rotatable provided with a rotating device and a hydraulic device.

The large-volume rotary kiln of the present invention, the firing object is injected into the interior and has a rotary shaft at the outer end (一端), the firing furnace body is installed on the support to be rotatable about the rotary shaft; A rotating device for rotating the firing furnace body by providing a rotational force to the rotating shaft; A hydraulic lifting device installed below the support to adjust an inclination of the kiln body by hydraulic pressure; And at least one dispersion pipe for supplying at least one of gas, steam, and air from the outside to the inside of the kiln body in order to create a firing atmosphere.

Large-capacity rotary kiln of the present invention cover to be coupled to the other end of the kiln body to open and close; And a thermocouple penetrating through the cover and extending into the kiln body to sense a temperature inside the kiln body.

Large-volume rotary kiln of the present invention, the guide tube surrounding the thermocouple to prevent sagging of the thermocouple; A rotary joint to which the guide tube is screwed; And a flange having one end coupled to the rotary joint, the other end coupled to the cover, and a through hole through which the guide tube is inserted.

The flange is a support plate for supporting the guide tube is attached to the flange through-hole inlet, the support plate is a circular plate having a periphery and smaller than the inner periphery of the through hole, the guide tube is inserted into the hole to support The outer circumference of the circular plate is partially welded to the inlet of the through hole to form a gap.

The guide tube, the thermocouple may be formed with at least one temperature sensing hole to facilitate the temperature sensing of the interior of the kiln body.

The dispersion pipe may extend through the one end of the kiln body to the inside of the kiln body, and a plurality of outlets may be formed such that at least one of the gas, steam, and air is ejected to the kiln body.

The distribution pipe may be a plurality, and the plurality of distribution pipes may be disposed radially about the rotation axis. It is preferable that the plurality of dispersion pipes have different lengths from each other.

The kiln body may be made of a heat-resistant alloy material containing nickel, chromium, iron, titanium, aluminum, manganese and silicon.

A heater is installed on the outer circumferential surface of the kiln body and is controlled according to a temperature sensed by the thermocouple to heat the kiln body.

The high-volume rotary kiln of the present invention is equipped with a rotary device and a hydraulic device, so that the tilting of the kiln body and the kiln body can be rotated, thereby economically producing a large-capacity solid absorbent required according to the scale-up of the carbon dioxide recovery process. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In describing the present invention, the same reference numerals are used for the same means in order to facilitate understanding. Numerals used in the description of the present specification, for example, first and second, are merely identification symbols for distinguishing the same or similar entities.

1 is a view showing the configuration of a large-volume rotary kiln according to an embodiment of the present invention.

Referring to Figure 1, the large-capacity rotary kiln according to an embodiment of the present invention, the support 102, the kiln body 110, the rotary device 120, the hydraulic lifting device 150, the distribution pipe 130, thermocouple 140 and heater 152.

The support 102 is a firing furnace body 110 rotatably installed around the rotating shaft 112, a rotary device 120 for rotating the firing furnace body 110 and a heater 152 for heating the firing furnace body 110. I support it. The support plate 104 of the support 102 may change the inclination of the hydraulic lifting device 150 to change the inclination of the kiln body 110.

The kiln body 110 is a torso of a rotatable cylindrical shape, and a firing object is injected therein and has a rotating shaft 112 at an outer end thereof. The other end (他 端) of the kiln body 110 is coupled to the cover 114 to open and close so that the firing object is injected into the kiln body 110. Here, the sintered object is composed of components of the solid absorbent used in the process of separating and recovering carbon dioxide, for example, inorganic components (active ingredients, enhancers, supports, inorganic binders, etc.) and organic components (dispersants, organic binders, antifoaming agents, etc.). ). On the outer circumferential surface of the kiln body 110, a heater 152 capable of heating the kiln body 110 may be spaced apart from the outer circumferential surface of the kiln body 110 by a predetermined distance.

The kiln body 110 may be made of a heat resistant alloy material including nickel, chromium, iron, titanium, aluminum, manganese, and silicon. For example, the heat resistant alloy material may be Inconel.

The rotary device 120 provides a rotational force to the rotary shaft 112 of the kiln body 110 to rotate the kiln body 110 by 360 °. Since the kiln body 110 may be rotated by the rotating device 120, the firing object injected into the kiln body 110 and gas, steam, and air for composition of the firing atmosphere may be mixed well, and the kiln body ( 110 may be uniformly heated by heater 152. Rotating device 120 is composed of a motor 122 for providing a rotational force, a power transmission means 124 for transmitting the rotational force of the motor 122 to the rotary shaft 112 of the kiln body 110. Power transmission means 124 may be a chain (chain), gear (gear) or pulley (pulley).

The hydraulic lifting device 150 is installed below the support 102 to adjust the inclination of the kiln body 110 by hydraulic pressure. The slope may be between 0 ° and 90 °. The kiln body 110 is disposed horizontally with respect to the ground when the inclination is 0 °, and the kiln body 110 is disposed perpendicular to the ground when the inclination is 90 °. When the inclination of the kiln body 110 is adjusted within a predetermined angle range by the hydraulic lifting device 150, the firing object and the gas, vapor, and air for composition of the firing atmosphere may be well mixed in the direction in which the rotating shaft 112 extends. Can be.

The distribution pipe 130 is connected to the external steam supply device 200 and the gas supply device 210. The steam supply device 200 supplies water or steam to the kiln body 110, and the gas supply device 210 supplies gas or air to the kiln body 110. The distribution pipe 130 transfers at least one of gas, steam, and air from the external steam supply device 200 and the gas supply device 210 into the kiln body 110 to create a firing atmosphere in the kiln body 110. Squirt.

The thermocouple (140) is a device for measuring the temperature using the electromotive force generated by the temperature difference between the junction of the two kinds of metal bonded to each other, and extends into the kiln body 110 through the cover 114 Sensing the temperature inside the kiln body 110. The sensed temperature may be provided to the controller 142.

The heater 152 is installed to be spaced apart from the outer peripheral surface of the kiln body 110 to heat the kiln body 110. The heater 152 may be installed in a three zone type to facilitate temperature control of each part in the longitudinal direction of the kiln body 110.

The controller 142 may heat the kiln body 110 by controlling the heater 152 according to the temperature sensed by the thermocouple 140 for firing the firing object.

2A is a side view of the dispersion pipe of FIG. 1, and FIG. 2B is a front view of the dispersion pipe of FIG. 1.

Referring to FIG. 2A, the dispersion pipe 130 extends through one end of the kiln body 110 and extends into the kiln body 110 and has a shape in which an end thereof is blocked. It is preferable that a plurality of jet holes 132 are formed in the distribution pipe 130 such that at least one of gas, steam, and air is blown into the kiln body 110.

There may be a plurality of distribution pipes 130. When there are a plurality of distribution pipes 130, the plurality of distribution pipes 130 may be different in length from each other and disposed radially about a rotation axis. 2B illustrates a radial arrangement of the distribution tubing 130. Due to the plurality of dispersion pipes 130 having different lengths in the kiln body 110, gas, steam, and air may be evenly sprayed into the kiln body 110.

3A to 3C are views for explaining the thermocouple, the guide tube, and the guide plate of FIG. 1.

Referring to FIG. 3A, the thermocouple 140 is wrapped by the guide tube 160 to prevent sagging of the thermocouple 140. The guide tube 160 is screwed to the rotary joint 180. The thermocouple 140 extends outward so that the thermocouple 140 may be connected to an external controller (not shown) through the rotary joint 180. The rotary joint 180 has a discharge port 182 for discharging gas, steam, or air in the kiln body 110 (FIG. 1) to the outside.

The guide tube 160 is formed with at least one temperature sensor 162. The temperature sensor 162 exposes the thermocouple 140 wrapped in the guide tube 160, so that the thermocouple 140 facilitates temperature sensing inside the kiln body (110 in FIG. 1).

The flange 170 has one end coupled to the rotary joint 180 and the other end coupled to the cover 114. The flange 170 is larger than the outer diameter of the guide tube 160 and has a through hole 172 into which the guide tube 160 is inserted. 3B illustrates the shape of the flange 170 in which the through hole 172 is formed. The flange 170 is preferably coupled to the rotary joint 180 such that the through hole 172 of the flange 170 communicates with the outlet 182 of the rotary joint 180.

Referring to FIG. 3C, a support plate 190 for supporting the guide tube 160 is attached to the inlet of the through hole 172 of the flange 170. The support plate 190 may be a circular plate having an outer circumference smaller than an inner circumference of the through hole 172 and having a hole 194. The guide tube 160 is inserted and supported in the hole 194 of the support plate 190. The outer circumference of the support plate 190 is partially welded to the inlet of the through hole 172 by using the plate 192 to form a gap 174. 4 is a photograph showing an example of a flange implemented according to an embodiment of the present invention.

3A to 3C, the gas, vapor, or air inside the kiln body 110 (FIG. 1) may include a gap 174 formed by the support plate 190, a through hole 172 of the flange 170, and It may be discharged to the outside through the discharge hole 182 of the rotary joint 180.

Although the detailed description of the present invention described above has been described with reference to a preferred embodiment of the present invention, a person skilled in the art without departing from the spirit and scope of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

1 is a view showing the configuration of a large-volume rotary kiln according to an embodiment of the present invention.

2A and 2B are views illustrating the distribution pipe of FIG. 1.

3A to 3C are views for explaining the thermocouple, the guide tube, and the guide plate of FIG. 1.

4 is a photograph in which the flange of FIG. 3 is implemented.

Claims (10)

A firing furnace body having a firing object injected therein and having a rotating shaft at an outer end thereof, the firing body being installed on a support to be rotatable about the rotating shaft; A rotating device for rotating the firing furnace body by providing a rotational force to the rotating shaft; A hydraulic lifting device installed below the support to adjust an inclination of the kiln body by hydraulic pressure; And And at least one dispersion pipe for supplying at least one of gas, steam, and air from the outside into the firing furnace body to create a firing atmosphere. The method of claim 1, A cover coupled to the other end of the kiln body to be opened and closed; And And a thermocouple extending through the cover to the inside of the kiln body to sense a temperature inside the kiln body. The method of claim 2, A guide tube surrounding the thermocouple to prevent sagging of the thermocouple; A rotary joint to which the guide tube is screwed; And a flange having one end coupled to the rotary joint, the other end coupled to the cover, and a through hole in which the guide tube is inserted. The method of claim 3, The flange is a support plate for supporting the guide tube is attached to the flange through-hole inlet, The support plate is a circular plate having an outer circumference smaller than the inner circumference of the through hole and having a hole, and the guide tube is inserted and supported in the hole, and the outer circumference of the circular plate is partially welded to the through hole inlet to form a gap to form a gap. . The method of claim 3, wherein the guide tube, Large-capacity rotary kiln is formed with at least one temperature sensing opening for the thermocouple to facilitate the temperature sensing inside the kiln body. According to claim 1, The distribution pipe, Penetrates one end of the kiln body and extends into the kiln body; And a plurality of ejection openings are formed such that at least one of the gas, steam, and air is ejected into the kiln body. The method of claim 6, wherein the distribution pipe is a plurality, The plurality of distribution pipe is a large-volume rotary kiln is disposed radially about the rotation axis. The large-capacity rotary kiln according to claim 7, wherein the plurality of distribution pipes are different in length from each other. According to claim 1, The firing furnace body, Large-volume rotary kiln made of heat-resistant alloy material containing nickel, chromium, iron, titanium, aluminum, manganese and silicon. The method of claim 1, And a heater installed to be spaced apart from the outer circumferential surface of the kiln body and controlled according to a temperature sensed by the thermocouple to install a heater for heating the kiln body.

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