CN105865207B - A kind of top attemperator suitable for anode-baking furnace - Google Patents

Abstract

The invention discloses a top insulation device suitable for an anode roasting furnace. The semi-open cavity of the semi-enclosed radiation-proof shell is filled with an internal filling insulation material (2), and the open surface of the insulation material (2) is filled inside A semi-open insulation cavity (4) is constructed at the end, and a thermocouple is arranged on the semi-enclosed radiation-proof enclosure, and the measuring head of the thermocouple is in the insulation cavity (4). On the inner surface of the semi-enclosed radiation-proof enclosure Installed with feet. During normal operation, the present invention is fixed on the outer surface of the top of the high temperature zone of the anode roasting furnace, and the thermocouple will continuously collect the temperature data on the top of the roasting furnace, and the staff can detect the operation of the furnace body through the collected data and the top observation hole, and it can be simple, Quickly remove the insulation device from the top, which is convenient for maintenance personnel to overhaul and maintain. The invention also has the advantages of long service life, small operation and maintenance workload, and low operation cost, and is suitable for use as an external heat preservation device in the high temperature zone of the anode roasting furnace.

Description

A top insulation device suitable for anode roasting furnace

technical field

The invention relates to a heat preservation device, in particular to an external heat preservation device for the top (including a roasting area, a preheating area, and other areas) of a roasting furnace (including a ring type roasting furnace, a sintered box type roasting furnace, and a single chamber furnace).

Background technique

Metal aluminum has excellent physical and chemical properties and plays an increasingly important role in today's society. The use of aluminum and aluminum alloys has penetrated into various important fields of national economic construction. According to statistics, there are currently more than 100 electrolytic aluminum production enterprises in my country, and their production capacity ranks first in the world. It has made great contributions to the rapid development of my country's national economy. The quality of the anode (also known as carbon anode, anode carbon block, anode for short) directly affects the operation of the aluminum electrolytic cell and its technical and economic indicators, and plays an important role in the aluminum electrolysis process. The production of prebaked anodes is one of the important processes for obtaining anodes, the basis for the normal operation of aluminum electrolytic cells, and the core of stable aluminum electrolysis process conditions. The roasting furnace is a thermal equipment for roasting and heat-treating formed carbon products, and roasting is the most important process in the production of pre-baked anodes, accounting for about 60% of the total energy consumption of anode production; this process is isolated from the air in the roasting furnace Under certain conditions, it is carried out by indirect heating according to a certain heating rate; the charcoal products are roasted at 900-1100 °C in the roaster, and after a series of complex physical and chemical changes, the formed coke grid will integrate all different sizes of charcoal. The coke particles are firmly connected together, so that the baked product has certain mechanical strength, heat resistance, corrosion resistance and good thermal conductivity and electrical conductivity, so as to meet the needs of use and further thermal processing (graphitization). The temperature control of the roaster has a great influence on the quality of the anode product, the service life of the roaster, the energy consumption of the product and the environment. Therefore, it is very important to control the temperature of the anode roaster.

Because the physical and chemical processes of the roasting process in the anode roaster are very complex, there are not only gas flow, fuel combustion, but also heat transfer and material movement. Therefore, many problems are faced in the construction and actual production and operation of anode roaster equipment. At present, there are mainly the following problems: ①The anode roaster occupies a large area, and generally requires an independent factory building with a roof; ②After the roaster has been in operation for more than 4 years, the furnace chamber is not well sealed, and the air leakage coefficient is high, resulting in a 15% reduction in fuel utilization. % or more, and affect product quality; ③Part of the coal tar pitch smoke cannot be fully burned in the flue, and is discharged with the roasting flue gas, resulting in increased energy consumption and increased pollution; High energy consumption and large resource consumption; ⑤The temperature at the top of the anode roasting furnace is too high, the production and maintenance environment is difficult, the heat loss is large, and the energy consumption is high.

Among the above problems, the first one is a one-time investment in fixed assets, and the second to fourth can be solved by optimizing and improving the structure of the roasting furnace. The cross-section of flue gas flow, reducing the internal resistance of the fire channel and other methods can be realized. The fifth is a long-term problem in the operation process, which is the most potential and the most important problem to be solved.

For the large heat loss and high energy consumption on the top of the roaster. At present, there are five commonly used insulation methods: the first is the ring-type roaster furnace cover before 2005, which is basically made of refractory lightweight clay bricks. Most domestic carbon companies are still using it today. Its advantages It is low cost and easy to construct, but the disadvantage is that the thermal conductivity of refractory bricks is high, and it increases with the temperature of the furnace room. During long-term high-temperature use, the refractory bricks shrink and deform, and gaps appear between each other, resulting in The negative pressure loss is large, and the heat loss is large, resulting in excessive waste of energy. The second is that after 2005, with the development and application of new materials and technologies, the ring-type roasting furnace covers of newly-built carbon enterprises are mostly made of ceramic fiber modules anchored and installed, which have small thermal conductivity and low bulk density. It has the advantages of small heat loss, but the one-time cost is high. The third is to use diatomite bricks to cover the light bricks on the surface of the furnace cover. The advantage is that the weight is lighter and the density is only 0.5g/cm3, but the integrity is poor and the sealing is not good. It has long been eliminated. The fourth is to use lightweight castables to spread evenly on the surface of refractory bricks. The advantage is that the integrity is better, and the insulation and sealing performance of the furnace cover is also better in the initial stage of use. However, with repeated changes in production temperature, the castables are resistant to thermal shock. Poor performance, cracking, falling off, etc., can not achieve the effect of sealing and heat preservation. The fifth is the more common heat preservation method for the furnace cover of the ring type roaster, that is, the silicate composite heat preservation coating is used to smear and cover the surface of the refractory brick. It is composed of refractory fiber powder, additives, binders, etc., and the heat preservation effect It is better, but the disadvantage is that the strength is low, the dust in the carbon production industry is relatively large, and frequent cleaning is required. The silicate composite insulation material falls off layer by layer during cleaning and use, and requires frequent repairs, and the service life is short.

Based on the above reasons, these five methods of strengthening heat preservation have obvious deficiencies, and are difficult to be widely used in actual production.

Contents of the invention

The technical problem to be solved by the present invention is to provide a suitable structure with simple structure, convenient operation and use, real-time detection of temperature fluctuation of the heat preservation surface, good heat preservation effect, no influence on normal operation, long service life, small operation and maintenance workload, and low operation cost. The top heat preservation device of the anode roasting furnace.

In order to solve the above technical problems, the present invention provides a top insulation device suitable for anode roasting furnaces. The semi-open cavity of the semi-enclosed radiation-proof casing is evenly and tightly filled with internal filling insulation materials, and the interior is filled with The open surface end of the thermal insulation material constructs a semi-open thermal insulation cavity, and the semi-enclosed radiation-proof shell is provided with a thermocouple and the measuring head of the thermocouple is located in the thermal insulation cavity. The inner surface of the semi-enclosed anti-radiation shell is equipped with a plurality of fixed feet.

The semi-enclosed radiation-proof enclosure is a square semi-enclosed radiation-proof enclosure.

Described thermocouple is K-type thermocouple.

The cylindrical support foot is a cylindrical support foot.

The center of the semi-enclosed radiation-proof shell has a round hole slightly larger than the aperture of the observation hole, and the inspection port of the observation hole is constructed by filling the heat-insulating material inside.

Four of the legs are installed symmetrically on the inner surface of both sides of the semi-enclosed radiation-proof enclosure, and the mounting points of the legs are at the positions of 1/5L ₁ and 4/5L ₁ on the inner side of the side, L ₁ is the side length of the semi-enclosed radiation-proof enclosure.

The semi-enclosed anti-radiation shell is made of 2-5mm high temperature resistant steel plate.

The internal filling insulation material is made of 62% expanded vermiculite, 22% silicate insulation material, 7.2% high temperature resistant cement, 7.8% glass fiber felt and rock wool under pressure. The heat transfer coefficient of the above-mentioned internal filling insulation material is less than 0.012W/m·K at normal pressure and thermodynamic temperature of 473K, and the thickness is 15-50mm.

The length of the heat preservation cavity is 9/10L ₁ , the width is 9/10L ₂ , and the height h of the cavity is 10-20mm, which is suitable for the top heat preservation device of the anode baking furnace, and L ₁ is the semi-enclosed radiation protection The side length of the shell, L ₂ is the side width of the semi-enclosed radiation-proof shell.

The temperature measuring range of the thermocouple is between 0°C and 1200°C, and the thermal response time is 0.2S.

The top heat preservation device suitable for anode roasting furnace adopting the above technical scheme, the anode roasting furnace includes ring type roasting furnace, sintered box type roasting furnace, single chamber furnace, the top includes roasting area, preheating area, other areas, square semi-enclosed type The anti-radiation shell has a semi-open square container structure as a whole. There is a round hole in the center of the shell for the observation hole, which is slightly larger than the outer diameter of the observation hole. The surface is high temperature, because the specific emissivity of metal is much smaller than that of non-metal, and the temperature of the shell is much lower than that of the furnace roof, so that the shell can greatly reduce the energy radiated from the furnace roof to the surrounding environment. The inspection port of the observation hole is constructed at the opening of the observation hole by filling the insulation material inside. Its outer diameter is slightly larger than the aperture of the observation hole. internal situation. The internal filling insulation material is made of 62% expanded vermiculite, 22% silicate insulation material, 7.2% high temperature resistant cement, 7.8% glass fiber felt and rock wool, etc. Tightly fill the semi-open cavity of the square semi-enclosed radiation-proof shell, and construct a semi-open air cavity, that is, the thermal insulation cavity, at the open surface end. The internal filling insulation material has a heat transfer coefficient of less than 0.012W/m K at normal pressure and a thermodynamic temperature of 473K, and a thickness of about 15-50mm, which can isolate most of the heat conduction of energy, and its specific heat capacity is smaller than that of conventional insulation materials, so The heat absorbed by itself is very little, only 1/8 of that of ordinary materials, which effectively reduces the heat capacity of the heat preservation device itself. By filling the inner surface of the square semi-enclosed radiation-proof enclosure with internal filling insulation material, a thermal insulation cavity is constructed (the middle of the thermal insulation cavity of the thermal insulation device at the observation hole is the detection port of the observation hole), and its length is 9/10L ₁ and its width is 9/10L 1 . is 9/10L ₂ , and the cavity height h is 10-20mm; because the thermal conductivity of metal is generally between tens and hundreds of W/m·K, the present invention fills the metal interior of the radiation-proof shell with thermal insulation material The surface part (including the edge in contact with the furnace surface) is wrapped, thereby reducing the heat conduction from the radiation-proof shell to the outside; the thermal insulation cavity can not only prevent the thermal insulation material from directly contacting the high-temperature surface of the furnace roof, but also form the center of the cavity space. The location where the K-type thermocouple measuring head is installed (the thermocouple at the observation hole is installed at 7/10L ₁ and 1/2L ₂ ), so that a single thermocouple can detect a large furnace surface area, such as cracks on the roasting furnace surface When , hot flue gas will be filled into the chamber, and the temperature will fluctuate violently detected by the K-type thermocouple. The temperature measurement range of the K-type thermocouple is between 0°C and 1200°C, and the thermal response time is 0.2S. The measuring head of the thermocouple is installed in the center of the insulation cavity space (the thermocouple at the observation hole is installed on 10L ₁ , 1/2L ₂ places); K-type thermocouple continuously measures the temperature at the center of the cavity, and draws the measured data as a time t-temperature ℃ curve on the PC side, which is convenient for the staff to observe and judge the operation of the roasting furnace If the high-temperature flue gas directly contacts the furnace roof for a long time, it can cause deformation and cracking of the furnace roof, and the existence of internal filling insulation materials and insulation cavities can limit the hot flue gas inside the roaster caused by cracking in the insulation cavity. The heat loss is greatly reduced, and the temperature fluctuation monitored by the K-type thermocouple in real time will accurately and quickly reflect the abnormal conditions of the roaster to the staff, helping the staff to quickly troubleshoot the problem. The cylindrical feet are made of round steel columns with a diameter of 6-8mm, which can withstand the high temperature of the outer surface of the roasting furnace. The four round steel columns are respectively installed in the symmetrical 1/5L ₁ and 4/5L ₁ inside the square semi-enclosed radiation-proof enclosure. The location; when installed, it is inserted into the brick joint between the combustion chamber and the material box of the roasting furnace, so that the staff can open the heat preservation device for inspection and daily maintenance of the roasting furnace. Installing this heat preservation device at the high temperature area on the outer surface of the top of the roasting furnace (including the roasting area, preheating area, and other areas) and the observation hole can effectively increase the temperature in the roasting furnace, generally by 5 to 65 °C; and compared with When the top is open to the air, the heat lost to the external environment through the top of the roasting furnace can be reduced by more than 68%.

In the present invention, a layer of 3-8 mm thick internal filling insulation material is added to the side of the square semi-enclosed radiation-proof shell. This method can save the step of filling low-creep light clay in the process of installing the top insulation layer. Further increasing the portability can make maintenance more convenient, and the sealing performance fully meets the production requirements. This improvement mainly takes into account the sealing and heat preservation performance of the top insulation layer, which can further enhance the convenience of installation, maintenance and construction.

The working principle of the present invention is briefly described as follows:

Taking a carbon factory as an example, during normal production, the natural gas consumption of the anode roaster is about 78m ³ /t, and the fuel utilization rate is generally about 55%. Furnace heat dissipation and incomplete combustion in the furnace. Among them, heat dissipation on the furnace surface accounts for about 7% of the total thermal expenditure of the anode roaster. The roasting zone of the roasting furnace is the area where the flame burns. In this area, the charcoal products need to be roasted at 900-1100°C to form a coke grid that can firmly connect all coke particles of different sizes together. At this time, the temperature of the furnace surface often reaches about 150-220°C, especially when the high-temperature flue gas directly contacts for a long time to cause deformation and cracking of the furnace roof, resulting in a large loss of negative pressure in the furnace chamber and more heat loss. Therefore, strengthening the heat preservation of the furnace surface of the anode roasting furnace and reducing the heat dissipation of the furnace surface are important measures to save energy and reduce consumption during the roasting process.

During normal production, the device is installed on the outer surface of the top of the high temperature zone of the anode roasting furnace (mainly referring to the roasting zone and preheating zone). There is a circular hole in the center of the shell used for the observation hole, which is slightly larger than the outer diameter of the observation hole. The square semi-enclosed radiation-proof shell is made of 2-5mm high-temperature-resistant steel plate, which can withstand the high temperature of the outer surface of the roasting furnace. At the same time, due to the metal The specific radiation rate is much smaller than that of non-metal, and the temperature of the square semi-enclosed radiation-proof shell is much lower than that of the furnace roof, so that the square semi-enclosed radiation-proof shell can greatly reduce the energy radiated from the furnace top to the surrounding environment. The internal filling insulation material is made of 62% expanded vermiculite, 22% silicate insulation material, 7.2% high temperature resistant cement, 7.8% glass fiber felt and rock wool, etc. Tightly fill the inner surface of the square semi-enclosed radiation-proof enclosure, and construct a semi-open air cavity at the end of the open surface, that is, the thermal insulation cavity. The heat transfer coefficient of this thermal insulation material at normal pressure and thermodynamic temperature 473K is less than 0.012W/m·K, the thickness is about 15-50mm, it can isolate most of the heat conduction of energy, and its specific heat capacity is smaller than that of conventional insulation materials, so the heat absorbed by itself is very little, only 1/8 of ordinary materials, which effectively reduces The heat capacity of the insulation device itself. The insulation cavity is constructed at the open end when filling the semi-open cavity of the square semi-enclosed radiation-proof shell with the internal filling insulation material (the middle of the insulation cavity of the insulation device at the observation hole is the detection port of the observation hole), and the interior is filled with insulation The material wraps the metal part of the inner surface of the square semi-enclosed radiation-proof casing (including the edge in contact with the furnace surface), thereby reducing the heat conduction from the radiation-proof casing to the outside. The insulation cavity is 9/10L ₁ in length and 9 in width /10L ₂ , height 10-20mm; the insulation cavity can not only prevent the insulation material from directly contacting the high-temperature surface of the furnace roof, but also the center of the formed cavity space is also the location where the measuring head of the K-type thermocouple is installed, which enables a single K-type thermoelectric Even to detect a large area of the furnace surface, if there is a crack in the roasting furnace surface, the hot flue gas will be filled into the insulation cavity, and the temperature will be detected by the K-type thermocouple to fluctuate violently. The temperature measurement range of the K-type thermocouple is between 0°C and 1200°C, and the thermal response time is 0.2S. The measuring head of the K-type thermocouple is installed in the center of the space of the insulation cavity (the thermocouple at the observation hole is installed at /10L ₁ , 1/2L ₂ places); the K-type thermocouple will continuously measure the temperature at the center of the cavity, and draw the measured data as a time t-temperature ℃ curve on the PC side, which is convenient for the staff to observe and judge the roasting furnace If the high-temperature flue gas is in direct contact with the furnace roof for a long time, it can cause deformation and cracking of the furnace roof. The internal filling of thermal insulation materials and the existence of thermal insulation cavities can limit the hot flue gas inside the roaster caused by cracking to the thermal insulation cavity. In the process, the heat loss is greatly reduced, and the temperature fluctuation monitored by the K-type thermocouple in real time will accurately and quickly reflect the abnormal conditions of the roaster to the staff, helping the staff to quickly eliminate problems and dangers. The column feet are made of round steel columns with a diameter of 6-8mm, which can withstand the high temperature of the outer surface of the roasting furnace. The four round steel columns are respectively installed in the symmetrical positions of 1/5L ₁ and 4/5L ₁ inside the square semi-enclosed radiation protection enclosure. ;Insert in the brick gap between the combustion chamber and the material box of the roasting furnace during installation, so that the staff can open the heat preservation device for inspection and daily maintenance of the roasting furnace, and can ensure the normal and continuous operation of the device for more than 7 years.

The invention has a good heat preservation effect, can save nearly 6.52% of the total heat expenditure of the anode roasting furnace, has low cost, has a strong heat preservation ability, can monitor the temperature fluctuation of the furnace surface in real time and observe the conditions in the furnace at any time, and has a long service life. More than 7 years, small operation and maintenance workload, convenient and fast disassembly and assembly, low operating cost, suitable as the top of anode roasting furnace (including ring roasting furnace, sintering box roasting furnace, single chamber furnace) (including roasting area, pre- hot zone, other zones) external thermal insulation device.

Description of drawings

Fig. 1 is the main half sectional view of the thermal insulation device at the position of the fire removal channel of the present invention.

Fig. 2 is a main sectional view of the thermal insulation device at the fire path of the present invention.

Fig. 3 is a side sectional view of the thermal insulation device at the position of the fire removal channel of the present invention.

Fig. 4 is a side sectional view of the thermal insulation device at the fire path of the present invention.

detailed description

The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 3, the semi-open cavity of the square semi-enclosed radiation-proof enclosure 1 is evenly and tightly filled with the internal filling insulation material 2, and a semi-open cavity is formed at the open end of the internal filling insulation material 2. Open insulation cavity 4, square semi-enclosed radiation-proof shell 1 is provided with K-type thermocouple 5 and the measuring head of K-type thermocouple 5 is in the insulation cavity 4, and K-type thermocouple 5 is fixed in the insulation cavity 4 At the central point of the space, four fixed cylindrical feet 3 are installed on the inner surface of the square semi-enclosed radiation-proof enclosure 1 .

As shown in Figures 2 and 4, the semi-open cavity of the square semi-enclosed radiation-proof enclosure 1 is evenly and tightly filled with the internal filling insulation material 2, and a semi-open cavity is formed at the open end of the internal filling insulation material 2. Open insulation cavity 4, the center of the square semi-enclosed radiation-proof enclosure 1 has a circular hole slightly larger than the aperture of the observation hole and is filled with thermal insulation material 2 to construct the observation hole detection port 6, the square semi-enclosed radiation-proof enclosure 1 is provided with a K-type thermocouple 5 and the measuring head of the K-type thermocouple 5 is located in the insulation cavity 4, and the K-type thermocouple 5 is installed in the insulation cavity 4 at 7/10L ₁ and 1/2L ₂ , in a square The inner surface of the semi-enclosed radiation-proof enclosure 1 is provided with four fixed cylindrical feet 3 .

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the square semi-enclosed radiation-proof shell 1, the internal filling insulation material 2 and the insulation cavity 4 together constitute the insulation layer of the roaster; the K-type thermocouple 5 monitors the insulation in real time The temperature of the cavity; the observation hole detection port 6 is convenient for the staff to open the heat preservation cover of the fire path at any time, and detects and observes the inside of the roasting furnace; the cylindrical leg 3 plays a role in fixing the outer heat preservation layer.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in the present invention, the square semi-enclosed radiation-proof casing 1 is a semi-open square container structure as a whole, and there is a ratio observation hole in the center of the casing for the observation hole. A circular hole with a slightly larger outer diameter, a square semi-enclosed radiation-proof casing 1 is made of a high-temperature-resistant steel plate of 2-5 mm, which can withstand the high temperature of the outer surface of the roasting furnace.

In the present invention, the internal filling insulation material 2 is composed of 62% expanded vermiculite, 22% silicate insulation material, 7.2% high temperature resistant cement, 7.8% glass fiber felt and rock wool, etc. Made, evenly and tightly filled in the semi-open cavity of the square semi-enclosed radiation-proof shell 1, and a semi-open air cavity, that is, the thermal insulation cavity 4, is constructed at the open surface end. The internal filling insulation material 2 has a heat transfer coefficient of less than 0.012W/m·K at normal pressure and a thermodynamic temperature of 473K, and a thickness of about 15-50mm. Its specific heat capacity is smaller than that of conventional insulation materials, so it absorbs very little heat. 1/8 of the material, most of the heat is transmitted in isolation by it. The insulation device filled with this material is installed at the high temperature area on the outer surface of the top of the roasting furnace and the observation hole, which can effectively increase the temperature in the roasting furnace, generally by 5-65°C; and compared with when the top is open to the air, through The heat loss from the top of the roasting furnace to the external environment can be reduced by more than 6.52%, which significantly improves energy utilization.

In the present invention, the thermal insulation cavity 4 is constructed at the open surface end when the internal filling thermal insulation material 2 is filled in the semi-open cavity of the square semi-enclosed radiation-proof shell 1 (in the middle of the thermal insulation cavity 4 of the thermal insulation device at the observation hole is Observation hole detection port 6), the length is 9/10L ₁ , the width is 9/10L ₂ , the cavity height h is 10-20 mm, L ₁ is the side length of the square semi-enclosed radiation-proof enclosure 1, and L ₂ is a square The side width of the semi-enclosed radiation-proof enclosure 1 . The thermal conductivity of metal is generally between tens to hundreds of W/m·K, so the present invention fills the inner surface metal part of the square semi-enclosed radiation-proof shell 1 (including the edge contacting with the furnace surface) with the inner filling insulation material 2 ) are wrapped. The thermal insulation cavity 4 can not only prevent the internal filling thermal insulation material 2 from directly contacting the high-temperature surface of the furnace roof; the center of the formed cavity space is also the position where the K-type thermocouple 5 measuring head is installed, which enables a single K-type thermocouple 5 to detect a relatively large In a large furnace surface area, such as when cracks appear on the roasting furnace surface, hot flue gas will be filled into the heat preservation cavity 4 , so that the K-type thermocouple 5 detects severe temperature fluctuations. In addition, in the closed state, the heat transfer coefficient of the air itself is about 0.03W/m·K at normal pressure and thermodynamic temperature of 473K, so the heat preservation cavity 4 itself also has a certain heat preservation effect.

In the present invention, the temperature measurement range of the K-type thermocouple 5 is between 0 and 1200°C, and the thermal response time is 0.2S. K-type thermocouples 5 at 6 places are installed in 7/10L ₁ and 1/2L ₂ places in the insulation cavity 4). The K-type thermocouple 5 will measure the temperature at the center of the cavity in real time, and draw the measured data as a time t-temperature ℃ curve on the PC side, which is convenient for the staff to observe and judge the operation of the roasting furnace.

In the present invention, the cylindrical legs 3 are made of round steel columns with _a diameter of 6-8mm, which can withstand the high temperature of the outer surface of the roasting furnace. 4/5L ₁ position. When installed, it is inserted into the brick gap between the combustion chamber on the surface of the roasting furnace and the material box, so that it is convenient for the staff to open the heat preservation device for inspection and daily maintenance of the roasting furnace. L ₁ is the side length of the square semi-enclosed radiation-proof enclosure 1 .

In the present invention, the inspection port 6 of the observation hole is constructed at the opening of the observation hole by filling the insulation material 2 inside the square semi-enclosed radiation-proof casing 1, and its outer diameter is slightly larger than the aperture of the observation hole, so it can be well installed Fit viewing hole. The observation hole detection port 6 can facilitate staff to observe the situation in the furnace at any time while having high-efficiency heat preservation.

A specific application of the present invention is to use it in the energy-saving and consumption-reducing technology of anode roasting furnaces, which can achieve strong heat preservation and energy saving effects and good real-time detection effects without a large investment. This method starts from the three aspects of heat conduction, convective heat transfer, and radiation heat transfer from the roaster to the external environment, and achieves the purpose of saving energy and reducing consumption by reducing the heat loss in all aspects of the furnace top. The heat preservation cavity and the K-type thermocouple enable the present invention to monitor the temperature on the top surface of the roasting furnace in real time, help the staff to judge whether the roasting furnace is working normally, and help the staff to eliminate dangers and hidden dangers in time after abnormal temperature fluctuations are found. The invention at the observation hole can facilitate the staff to observe the situation in the furnace at any time while having high-efficiency heat preservation. Reasonable use of the present invention can generally save nearly 6.52% of the total thermal expenditure of the anode roasting furnace, and the device also has the advantages of convenient operation and use, good heat preservation effect, long service life (up to more than 7 years), and small operation and maintenance workload , low operating cost, and does not affect the normal operation of the roaster. In addition, the device is flexible and can quickly and quickly repair any part of the roaster roof. It can also decide whether to use the whole or part of it according to the site situation to achieve resource efficiency. of maximization.

Claims (9)

1. a kind of top attemperator suitable for anode-baking furnace, it is characterized in that：Semi surrounding type radiation protective casing (1) it is semi-open Formula cavity is uniformly and consolidation is filled with internal filling insulation material (2), and in the open surface of described inside filling insulation material End constructs a semi-open heat insulation cavity (4), and described Semi surrounding type radiation protective casing is provided with thermocouple (5) and described The measurement head of thermocouple be in described heat insulation cavity (4), be provided centrally with peep hole for the attemperator at quirk Detection mouth (6), the more legs (3) for playing fixation are installed in the inner surface of described Semi surrounding type radiation protective casing；

Described inside filling insulation material (2) is by expanded vermiculite of the degree for 62%, 22% silicate thermal insulating material Material, 7.2% high temperature resistant cement, 7.8% glass mat and rock wool pressurization are mixed, described inside filling thermal insulating material Expect that the heat transfer coefficient of (2) in normal pressure, thermodynamic temperature 473K is less than 0.012W/mK, thickness is 15~50mm.

2. the top attemperator according to claim 1 suitable for anode-baking furnace, it is characterized in that：Described Semi surrounding type Radiation protective casing is square Semi surrounding type radiation protective casing (1).

3. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Described thermoelectricity Even is K-type thermocouple (5).

4. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Described cylinder Leg is cylinder leg (3).

5. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Half described bag The center for enclosing formula radiation protective casing is provided with the circular hole more bigger than peep hole aperture and fills insulation material (2) structure by described inside Produce peep hole detection mouth (6).

6. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Wrapped described half The inner surface symmetric position for enclosing formula radiation protective casing both sides is provided with leg described in 4, and the mount point of described leg is in institute The 1/5L on the inside of side₁With 4/5L₁Position, L₁For the length of side of described Semi surrounding type radiation protective casing.

7. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Half described bag Formula radiation protective casing is enclosed to be made up of 2~5mm high temperature resistant steel plate.

8. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Described insulation A length of 9/10L of cavity (4)₁, a width of 9/10L₂, cavity height h is the top insulation dress that 10~20mm is suitable to anode-baking furnace Put, L₁For the length of side of described Semi surrounding type radiation protective casing, L₂For the hem width of described Semi surrounding type radiation protective casing.

9. the top attemperator according to claim 1 or 2 suitable for anode-baking furnace, it is characterized in that：Described thermoelectricity Even temperature-measuring range is between 0 DEG C~1200 DEG C, thermal response time 0.2S.