CN218380427U

CN218380427U - Electric heating melting homogenizing furnace

Info

Publication number: CN218380427U
Application number: CN202222560114.4U
Authority: CN
Inventors: 请求不公布姓名; 杨智锋; 齐庆
Original assignee: Shanxi Zhibo Environmental Engineering Co ltd
Current assignee: Shanxi Zhibo Environmental Engineering Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-24
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to an electric heating melting homogenization furnace suitable for melt solution homogenization clarification treatment that obtains after industry solid waste melts, including furnace body and feeding device, set up partition wall and multiunit/layer electric heating part in the furnace body, the electric heating part can make the melt solution produce or obtain the heat and maintain at the molten state behind the circular telegram. The utility model provides an electrical heating melting homogenization furnace can solve solid waste melting and be difficult to homogenization and clarify insufficient problem, provides the high-quality meltwater of composition and performance homogeneity.

Description

Electric heating melting homogenizing furnace

Technical Field

The utility model relates to a melting liquid handles professional equipment, especially relates to an electrical heating melting homogenizing furnace that is applicable to the melting liquid clarification homogenization that obtains behind the melting of industry solid waste.

Background

Chinese patent CN 114264150A discloses a wide-screening powder phase-change composite furnace applied to solid waste treatment, and through the treatment of the wide-screening powder phase-change composite furnace, solid waste can be melted to obtain a molten liquid which can be used for preparing high-value inorganic products such as high-performance fibers, microcrystalline glass, foam glass and the like. The invention provides a new idea for preparing inorganic products by taking industrial solid wastes as raw materials. However, the invention does not disclose how to further process the melt and the corresponding processing equipment to obtain a good quality melt for the preparation of high value inorganic products.

The melting tank furnace is an essential important device for realizing high-temperature melting of raw materials. The melting furnaces used in industry are mainly divided into three types, namely a flame tank furnace, an all-electric melting tank furnace and a flame and electric boosting tank furnace, and are mainly used for glass production. However, the main raw materials for glass production are pyrophyllite, quartz sand, limestone, dolomite, borocalcite, boromagnesite and other ores, and the physical and chemical properties such as composition, melting point and the like are significantly different from those of industrial solid wastes, so that the existing melting tank furnace has poor adaptability to industrial solid waste materials, and the defects that organic matters possibly contained in the solid waste materials cannot be completely removed and the solid waste materials cannot be fully melted, the molten liquid is poor in clarification and homogenization effects and the like when the industrial solid wastes are treated by adopting the melting tank furnace are overcome.

Disclosure of Invention

The melting tank furnace aims to solve the problems that a special melting homogenizing device suitable for treating industrial solid waste to prepare molten liquid is lacked in the prior art, the existing melting tank furnace has poor adaptability to industrial solid waste materials, organic matters possibly contained in the solid waste materials cannot be completely removed and the solid waste materials cannot be fully melted when the melting tank furnace is used for treating the industrial solid waste, the molten liquid is poor in clarifying and homogenizing effects, and the like. An object of the utility model is to provide an electric heating melting homogenization furnace who is applied to specially to handle industry solid waste melt.

The utility model adopts the technical proposal as follows.

An electric heating melting homogenizing furnace comprises a furnace body, a feeding device and an electric heating part; the inner wall of the furnace body is a refractory furnace lining, a chamber surrounded by the refractory furnace lining is divided into a heat-preservation sedimentation area and a homogenization clarification area by a partition wall, and a throat is arranged at the upper part of the lower part of the partition wall and is communicated with the homogenization clarification area through the heat-preservation sedimentation area of the throat; the bottom of the heat-preservation sedimentation area is sequentially provided with a sedimentation ridge and a sedimentation tank, wherein a slag discharge port is arranged on the furnace wall on one side of the lowest end of the sedimentation ridge; the homogenization clarification zone is composed of an ascending channel, a feeding channel and a passage which are connected in sequence, the bottom end of the passage is provided with a downstream processing device, and the vertical section of the homogenization clarification zone is integrally in a reverse L-shaped structure; the feeding device is arranged at the upper part of the left side of the heat-preservation sedimentation region, and the melting liquid is intermittently or continuously added into the furnace body through the feeding device; the electric heating part generates or obtains heat to the melt after being electrified so as to maintain the melt state.

Preferably, the electric heating melting homogenizing furnace further comprises an exhaust hole and a temperature measuring hole which are arranged at the upper part of the homogenizing clarification zone. Further preferably, the inner wall of the furnace body between the exhaust hole and the temperature measuring hole is provided with an air blocking brick.

In a more preferable technical scheme, the electric heating part is a plurality of groups/layers of heating bodies or electrodes, and at least one group/layer of heating bodies or electrodes are respectively arranged in the heat preservation sedimentation area and the homogenization clarification area. Preferably, the electric heating part is a rod-shaped or plate-shaped electrode. More preferably, the electric heating part disposed in the homogenizing and clarifying zone is located below and spaced apart from the exhaust hole.

Preferably, the sedimentation ridge is wedge-shaped, and the slag discharge port is arranged on the furnace wall at one side of the lowest end of the wedge-shaped slope surface.

Preferably, the volume ratio of the heat-preservation settling zone to the homogenization clarification zone is 8-15. More preferably, in any one of the above technical solutions, the refractory lining has a double-layer structure, in which the inner layer is a working layer made of a high-temperature-resistant and anti-erosion refractory material, and the outer layer is a permanent layer made of a heat-insulating refractory material.

Compared with the existing melting tank furnace for preparing glass, the electric heating melting homogenizing furnace provided by the utility model is more suitable for the process of further clarifying and homogenizing treatment of the melt liquid obtained after melting industrial solid waste, especially industrial solid waste containing a certain calorific value, such as coal-based solid waste. The utility model discloses an electric heating melting homogenization furnace separates for two relatively independent space regions in heat preservation subsidence area and homogenization clarification district through the partition wall in the stove, set up multiunit/layer electric heating part in the melting homogenization furnace, the bottom design that will keep warm the subsidence area is for subsiding ridge and precipitation tank, set up the homogenization district into the synergy of technical means such as the three-section links to each other and the structure is different "passageway" structure, can solve solid waste melting and be difficult to homogenization and the insufficient problem of solid waste melt clarification, ensure to obtain the temperature and constitute the stable high-quality melt raw materials that satisfies preparation high value inorganic product of homogeneity.

Drawings

Fig. 1 is a schematic view of the cross-sectional structure of the electric heating melting homogenizing furnace along the vertical direction.

Fig. 2 is a top view of the electric heating melting homogenizing furnace of the present invention, in which the structure of the feeding device is omitted to more clearly show the components inside.

Reference numerals: 1-a feeding device; 2-furnace body; 3-refractory lining; 4-air vent; 5-air blocking bricks; 6-temperature measuring holes; 7-a pathway; 8-downstream processing means; 9-a feed channel; 10-an electrical heating means; 11-a rising channel; 12-partition wall; 13-fluid holes; 14-a precipitation tank; 15-a sinker ridge; 16-slag discharge port.

Detailed Description

The structure and the operation principle of the electric heating melting homogenizing furnace of the present invention will be described in detail below by taking the example of four groups of electric heating parts provided in the electric heating melting homogenizing furnace of the present invention.

As shown in fig. 1 and 2, the electric heating melting homogenizing furnace of the present invention comprises a furnace body 2, a feeding device 1, an electric heating component 10, a downstream processing device 8 and a slag discharge port 16; the inner wall of the furnace body 2 is a refractory lining 3 built by refractory materials, a chamber enclosed by the refractory lining 3 is divided into a heat preservation sedimentation area and a homogenization clarification area by a partition wall 12, a throat 13 is arranged on the upper part of the lower part of the partition wall 12, and the heat preservation sedimentation area is communicated with the homogenization clarification area through the throat 13. The furnace is provided with the partition wall 12, so that the inner chamber of the furnace is divided into two relatively independent space areas, and a refractory slag layer on the uppermost layer of the molten liquid is conveniently blocked on one side of the heat preservation settlement area. The refractory lining is preferably a two-layer brick structure built by refractory bricks and insulating bricks, wherein the inner layer can be built by the refractory bricks, and the outer layer can be built by the insulating bricks.

As another preferred embodiment, the utility model discloses an in electric heating melting homogenization furnace, feeding device adopts automatic material conveying equipment, can realize continuous/intermittent type feeding.

In the figures 1 and 2, the bottom of the heat-preservation sedimentation area is provided with a sedimentation ridge 15 and a sedimentation tank 14 in sequence, wherein the sedimentation ridge 15 is wedge-shaped, and a slag discharge port 16 is arranged on the furnace wall at one side of the lowest end of the wedge-shaped slope surface of the sedimentation ridge. The special structural design of the bottom of the heat-preservation settling zone is beneficial to settling impurities or refractory substances contained in the molten liquid on the wedge-shaped surface of the settling ridge and the bottom of the settling tank due to the action of fluid resistance and gravity in the process that the molten liquid flows from the heat-preservation settling zone to the homogenization clarification zone through the throat 13, so that the molten liquid achieves the purpose of primary purification. The homogenizing and clarifying zone consists of a rising channel 11, a feeding channel 9 and a passage 7 which are connected in sequence, the bottom of the passage 7 is provided with a downstream processing device 8, and the vertical section of the homogenizing and clarifying zone is of a reverse L-shaped structure as a whole. The homogenization area is provided with three sections of connected channels with different structures, so that the aim of homogenizing components and performance of the melt in the upward and horizontal flowing process can be fulfilled, the melt is fully clarified and homogenized, and the requirements of subsequent process conditions are met.

As shown in FIGS. 1 and 2, the electric heating melting homogenizing furnace of the present invention is provided with four groups of electric heating elements 10 in the heat preservation settlement area and the homogenization clarification area, wherein the heat preservation settlement area is provided with three groups, the homogenization clarification area is provided with a group, the electric heating elements 10 are powered on to generate the melt or to obtain heat to maintain the melt in a melting state, and the viscosity of the melt is controlled to ensure the fluidity of the melt. Of course, the electric heating component can be provided with multiple groups/layers according to actual conditions, as long as the flow performance can be maintained by ensuring the generation or heat acquisition of the molten liquid.

In a more specific embodiment, the electric heating component 10 is four groups of plate-shaped molybdenum electrodes, the number of each group of electrodes is 2, three groups of electrodes are arranged on the side wall of the heat preservation settlement zone, the other group of electrodes are arranged on the side wall of the homogenization clarification zone, the plate-shaped molybdenum electrodes are arranged for heating the melt, the melt generates heat by self resistance after being electrified, the viscosity of the melt is controlled to ensure the fluidity of the melt, the uniformity of the components and the performance of the melt is further improved, and high-quality melt raw material liquid is obtained. Of course, in the electric heating melting homogenizing furnace of the present invention, the electric heating component 10 may be other electric heating elements or electrodes commonly used in the art, such as tin oxide electric heating plates/rods.

The utility model discloses an in the electrical heating melting homogenization furnace, the meltwater after being heated is at the in-process that flows, and a small amount of bubbles of can discharging in the interact between the material, in order to prevent that this part bubble is detained in the meltwater and flows along with the meltwater from low reaches processingequipment and influence its quality as the raw materials liquid of preparation high value inorganic product, the utility model discloses set up exhaust hole 4 and temperature measurement hole 6 on the upper portion of homogenization clarification area to and establish fender gas brick 5 at the furnace body inner wall between exhaust hole 4 and temperature measurement hole 6, thereby when being favorable to the further clarification of meltwater, these bubbles of discharging smoothly improve the quality of meltwater. It should be noted that the electric heating element 10 disposed in the homogenization and clarification zone should be located below the exhaust holes 4 and spaced apart from the exhaust holes 4.

As a specific example, in the electric heating melting homogenizing furnace, the solvent in the heat preservation settling zone should be large enough to ensure that the melt can be fully homogenized and clarified, and preferably, the volume ratio of the heat preservation settling zone to the homogenization and clarification zone is 8-15. In the working process, when the molten liquid is added into the furnace body 2 through the feeding device 1, the discharge spouts arranged on the downstream processing device 8 can flow out of the homogenized and clarified high-quality molten liquid according to a certain flow rate, so that the molten liquid in the furnace continuously and slowly flows from the heat-preservation settling zone to the homogenized and clarified zone through the throat. The melting of the refractory substances in the heat-preservation settling zone is realized by controlling the volume ratio of the heat-preservation settling zone to the homogenization settling zone, and the obtained basically clarified melt flows into the homogenization settling zone through the throat by combining the two-time settling action in the heat-preservation settling zone and can be used as a high-quality melt raw material for preparing high-value inorganic products after further homogenization.

The embodiments described above are only the most preferable embodiments of the present invention, and not all embodiments of the present invention. All other embodiments obtained by a person skilled in the art based on the above preferred embodiments and various simple modifications or equivalent changes of partial structures fall within the scope of protection of the present invention.

Claims

1. An electrically heated melt homogenizing furnace, comprising:

the furnace comprises a furnace body (2), wherein the inner wall of the furnace body (2) is a refractory furnace lining (3), a chamber surrounded by the refractory furnace lining (3) is divided into a heat-preservation settling zone and a homogenization clarification zone by a partition wall (12), a throat (13) is arranged at the upper part of the lower part of the partition wall (12), and the heat-preservation settling zone is communicated with the homogenization clarification zone through the throat (13); the bottom of the heat-preservation sedimentation region is sequentially provided with a sedimentation ridge (15) and a sedimentation tank (14), wherein a slag discharge port (16) is formed in the furnace wall on one side of the lowest end of the sedimentation ridge (15); the homogenization clarification zone is composed of a rising channel (11), a feeding channel (9) and a passage (7) which are connected in sequence, the bottom end part of the passage (7) is provided with a downstream processing device (8), and the vertical section of the homogenization clarification zone is integrally in a reverse L-shaped structure;

the feeding device (1) is arranged at the upper part of the left side of the heat-preservation settling zone, and the molten liquid is intermittently or continuously fed into the furnace body (2) through the feeding device (1);

and an electric heating means (10) for generating or receiving heat from the melt after the electric current is applied to the melt, and maintaining the melt in a molten state.

2. The electric heating melting homogenizing furnace of claim 1, further comprising a vent hole (4) and a temperature measuring hole (6) provided at an upper portion of the homogenizing clarification zone.

3. An electrically heated melting homogenizing furnace according to claim 2, characterized in that the inner wall of the furnace body (2) between the exhaust hole (4) and the temperature measuring hole (6) is provided with a gas blocking brick (5).

4. An electrically heated melting and homogenizing furnace as claimed in any of claims 1 to 3, characterized in that the electrical heating means (10) are groups/layers of heating elements or electrodes, and at least one group/layer of heating elements or electrodes is arranged in each of the heat-preserving sedimentation zone and the homogenizing clarification zone.

5. The electric heating melting homogenizing furnace of claim 4, characterized in that the electric heating part (10) is a plate-like or rod-like electrode.

6. An electrically heated melt homogenizing furnace according to claim 5, characterized in that the electric heating element (10) arranged in the homogenizing and refining zone is located below the gas outlet opening (4) and at a distance from the gas outlet opening (4).

7. An electrically heated melt homogenizing furnace according to claim 1, characterized in that the settling ridges (15) are wedge-shaped, and the slag discharge openings (16) are provided in the furnace wall at the lowest end side of the wedge-shaped slope.

8. An electrically heated melt homogenizing furnace as claimed in claim 1 wherein the volumetric ratio of the insulated settling zone to the homogenizing clarification zone is from 8 to 15.

9. An electrically heated melting homogenizing furnace as claimed in any one of claims 1 to 8 wherein the refractory lining is a double layer construction with an inner layer being a working layer of refractory material resistant to high temperature and erosion and an outer layer being a permanent layer of insulating refractory material.